Merge branch 'main' into dev-4.7.0

Konflikte in den Steuer-Dateien zugunsten der weiterentwickelten lokalen Version
aufgelöst: vat_pricing_mode (Preismodus), DB-gestützte tax_exemption_reasons mit FK,
typisierte Request-DTOs, Event-Steuer-Snapshot. origin/dev-4.7.0 enthielt eine
frühere Teilmenge desselben Features.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.env.example

@@ -56,6 +56,8 @@ MAIL_PASSWORD=null
 MAIL_FROM_ADDRESS="hello@example.com"
 MAIL_FROM_NAME="${APP_NAME}"
 
+APP_ADMIN_MAIL=
+
 AWS_ACCESS_KEY_ID=
 AWS_SECRET_ACCESS_KEY=
 AWS_DEFAULT_REGION=us-east-1

CLAUDE.md

@@ -0,0 +1,74 @@
+# CLAUDE.md
+
+Laravel 12 + Inertia/Vue, mandantenfähig (custom `tenant`-Scoping über `app('tenant')`, gesetzt in
+`app/Middleware/IdentifyTenant.php`). PHP 8.5 — Tests/Artisan laufen im Container:
+`docker exec mareike-mareike-app-1 php artisan test`.
+
+## Projektkonventionen (verbindlich)
+
+Die verbindlichen Konventionen (Actions/Request-Command-Response, Controller, Repositories, Models/Resources, Tenant,
+Routing, Mails) stehen in `.ai/conventions.md` und werden hier eingebunden — **immer beachten**:
+
+@.ai/conventions.md
+
+## Bereichs-Dokumentation
+
+- [Zahlungsmodule](app/EventPaymentModules/CLAUDE.md) — interface-gesteuerte Zahlungsarten (Optionen, Config,
+  Anmelde-Zusammenfassung, GiroCode/Fähigkeits-Interfaces, neues Modul hinzufügen).
+
+## Umsatzsteuer / Steuerinformationen
+
+Rechtlich korrekter Begriff ist **Umsatzsteuer (USt)**, nicht MwSt. Ziel: tagesbasierte Anmelde-Rechnungen („Teilnahme
+Veranstaltung X in Gruppe Y" × Anwesenheitstage × Beitrag/Tag). Grundlage ist gebaut, die Rechnungs-PDF/-berechnung
+folgt noch.
+
+### Tenant-Einstellungen (Tab „Steuerinformationen")
+
+Felder auf `tenants` (Self-Service `TenantData.vue` + verwaltet `TenantEdit.vue`, Partial `TenantTaxInfo.vue`,
+Controller `TenantTax*` / `ManagedTenantTax*`, Action `UpdateTenantTax`):
+
+- `tax_liable` (bool) — ob USt-Pflicht besteht.
+- `vat_rate` (int, %) — USt-Satz, nur relevant wenn `tax_liable` (0–100, geclamped).
+- `vat_pricing_mode` (Enum `App\Enumerations\VatPricingMode`, natives PHP-Enum: `inclusive` | `add_on`).
+- `tax_exemption_reason` (FK → `tax_exemption_reasons.slug`, nullable) — Grund wenn **nicht** steuerpflichtig.
+  DB-Default neuer Tenants: `ustg_4_25a` (Jugendhilfe).
+- `tax_exemption_note` (text, nullable) — Freitext, nur bei Grund `custom` (`requires_note`).
+
+### Preismodus — **das Kernverhalten**
+
+Es wird **immer der finale Brutto-Beitrag** pro Anmeldung gespeichert (`EventParticipant.amount`, keine USt-Spalten am
+Teilnehmer). Der Modus wirkt **nur bei der Preisermittlung im Anmeldeprozess**:
+
+- **`inclusive`** (Brutto / „zusammenfassen", Supermarkt-Prinzip, Default): der konfigurierte Beitrag **ist** der
+  Endpreis, USt ist bereits enthalten → Preis bleibt gleich; die USt wird erst **auf der Rechnung herausgerechnet**:
+  `USt = brutto × Satz / (100 + Satz)`, `netto = brutto − USt`.
+- **`add_on`** (Netto / „aufaddieren"): der konfigurierte Beitrag ist netto → Endpreis = `Beitrag × (1 + Satz/100)`. Die
+  USt wird bei der Anmeldung **aufgeschlagen** → Teilnehmer zahlt mehr.
+
+Umsetzung in `App\Resources\EventResource::calculateAmount()`: nach allen Multiplikatoren (Early-Bird, `pay_per_day`,
+Geschwister) gilt
+`if ($event->tax_liable && $event->vat_pricing_mode === VatPricingMode::AddOn->value) $fee->multiply(1 + $event->vat_rate/100);`
+danach `round(…, 2)`. Bei `inclusive`/nicht steuerpflichtig bleibt der Beitrag unverändert.
+
+### Event-Snapshot (unveränderlich)
+
+Bei Event-Anlage (`CreateEventCommand::execute()`) werden `tax_liable`, `vat_rate`, `vat_pricing_mode`,
+`tax_exemption_reason`, `tax_exemption_note` aus dem Tenant **auf das Event kopiert und dort eingefroren** (Spalten auf
+`events`). Preisermittlung und spätere Rechnungen lesen vom Event, nicht vom Tenant → spätere Tenant-Änderungen berühren
+bestehende Events/Rechnungen nicht.
+
+### Befreiungsgründe (DB-gestützt)
+
+Tabelle `tax_exemption_reasons`, Model `App\Enumerations\TaxExemptionReason` (Eloquent, `slug` PK; `name`,
+`invoice_text`, `requires_note`, `sort_order`). `options()` liefert `{value,label,text}` sortiert nach `sort_order`. FK
+von `tenants` **und** `events`. Seed in Migration `170010`, verfeinert in `170020`. Gründe (in Reihenfolge):
+`ustg_19` (§ 19 Kleinunternehmer), `ustg_4_24` (§ 4 Nr. 24 Jugendherbergen),
+`ustg_4_25a` (§ 4 Nr. 25 Buchst. a — Jugendhilfe-Veranstaltungen, Default), `ustg_4_22a` (§ 4 Nr. 22 Buchst. a —
+Vorträge/Kurse), `custom` (Freitext). Jeder Grund kapselt den Rechnungs-Pflichthinweis nach **§ 14 Abs. 4 Nr. 8 UStG**
+(`invoice_text`; bei `custom` der Tenant-Freitext via `invoiceText(?note)`). Gemeinnützigkeit allein befreit **nicht** —
+es braucht immer einen konkreten Rechtsgrund.
+
+### Noch offen (nächster Schritt)
+
+Die eigentliche **Rechnung**: tagesbasierte Positionen, USt aus dem gespeicherten Brutto herausrechnen (Satz vom
+Event-Snapshot); bei Befreiung kein USt-Ausweis, stattdessen der Pflichthinweis des Grundes.

app/Domains/Admin/Actions/CreateTenant/CreateTenantAction.php

@@ -2,6 +2,8 @@
 
 namespace App\Domains\Admin\Actions\CreateTenant;
 
+use App\Models\AvailablePaymentMethod;
+use App\Models\PaymentMethod;
 use App\Models\Tenant;
 
 class CreateTenantAction
@@ -29,6 +31,20 @@ class CreateTenantAction
             'has_active_instance' => true,
         ]);
 
+        $paymentMethodDefaults = PaymentMethod::defaults();
+        foreach (PaymentMethod::all() as $paymentMethod) {
+            $defaults = $paymentMethodDefaults[$paymentMethod->slug] ?? ['name' => $paymentMethod->slug, 'description' => null, 'configuration' => []];
+
+            AvailablePaymentMethod::create([
+                'tenant' => $tenant->slug,
+                'slug' => $paymentMethod->slug,
+                'name' => $defaults['name'],
+                'description' => $defaults['description'],
+                'active' => true,
+                'configuration' => PaymentMethod::sanitizeConfiguration($paymentMethod->slug, $defaults['configuration'] ?? []),
+            ]);
+        }
+
         $response->success = true;
         $response->message = 'Stamm wurde angelegt.';
         $response->slug = $tenant->slug;

app/Domains/Admin/Actions/RemovePaymentMethodUsage/RemovePaymentMethodUsageAction.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Domains\Admin\Actions\RemovePaymentMethodUsage;
+
+use App\Mail\EventReportMails\PaymentMethodsExhaustedMail;
+use App\Models\AvailablePaymentMethod;
+use Illuminate\Support\Facades\Mail;
+
+class RemovePaymentMethodUsageAction
+{
+    public function execute(AvailablePaymentMethod $availablePaymentMethod): void
+    {
+        foreach ($availablePaymentMethod->events()->get() as $event) {
+            $event->paymentMethods()->detach($availablePaymentMethod->slug);
+
+            $remainingActive = $event->paymentMethods()->where('active', true)->count();
+            if ($remainingActive === 0 && $event->registration_allowed) {
+                $event->registration_allowed = false;
+                $event->save();
+
+                $recipients = $event->eventManagers;
+                if ($event->costUnit !== null) {
+                    $recipients = $recipients->merge($event->costUnit->treasurers);
+                }
+
+                foreach ($recipients->unique('id') as $recipient) {
+                    Mail::to($recipient->email)->send(new PaymentMethodsExhaustedMail($event));
+                }
+            }
+        }
+    }
+}

app/Domains/Admin/Actions/UpdateAvailablePaymentMethod/UpdateAvailablePaymentMethodAction.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Domains\Admin\Actions\UpdateAvailablePaymentMethod;
+
+use App\Domains\Admin\Actions\RemovePaymentMethodUsage\RemovePaymentMethodUsageAction;
+use App\Models\PaymentMethod;
+
+class UpdateAvailablePaymentMethodAction
+{
+    public function __construct(private UpdateAvailablePaymentMethodRequest $request)
+    {
+    }
+
+    public function execute(): UpdateAvailablePaymentMethodResponse
+    {
+        $response = new UpdateAvailablePaymentMethodResponse();
+        $paymentMethod = $this->request->availablePaymentMethod;
+        $wasActive = $paymentMethod->active;
+
+        // Nur bekannte Options-Keys übernehmen -- das Options-Schema des Zahlungsmoduls ist die Autorität.
+        $configuration = PaymentMethod::sanitizeConfiguration($paymentMethod->slug, $this->request->configuration);
+
+        // Guard: Aktivierung nur erlaubt, wenn alle Pflicht-Optionen befüllt sind.
+        if ($this->request->active && !PaymentMethod::isConfigurationComplete($paymentMethod->slug, $configuration)) {
+            $response->success = false;
+            $response->message = 'Bitte zuerst alle Pflichtfelder ausfüllen, bevor die Zahlungsmethode aktiviert wird.';
+
+            return $response;
+        }
+
+        $paymentMethod->update([
+            'name' => $this->request->name,
+            'description' => $this->request->description,
+            'active' => $this->request->active,
+            'configuration' => $configuration,
+        ]);
+
+        if ($wasActive && !$this->request->active) {
+            (new RemovePaymentMethodUsageAction())->execute($paymentMethod);
+        }
+
+        $response->success = true;
+        $response->message = 'Zahlungsmethode wurde gespeichert.';
+
+        return $response;
+    }
+}

app/Domains/Admin/Actions/UpdateAvailablePaymentMethod/UpdateAvailablePaymentMethodRequest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Domains\Admin\Actions\UpdateAvailablePaymentMethod;
+
+use App\Models\AvailablePaymentMethod;
+
+class UpdateAvailablePaymentMethodRequest
+{
+    /**
+     * @param array<string, mixed> $configuration
+     */
+    public function __construct(
+        public AvailablePaymentMethod $availablePaymentMethod,
+        public string $name,
+        public ?string $description,
+        public bool $active,
+        public array $configuration = [],
+    ) {
+    }
+}

app/Domains/Admin/Actions/UpdateAvailablePaymentMethod/UpdateAvailablePaymentMethodResponse.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Domains\Admin\Actions\UpdateAvailablePaymentMethod;
+
+class UpdateAvailablePaymentMethodResponse
+{
+    public bool $success = false;
+    public string $message = '';
+}

app/Domains/Admin/Actions/UpdateTenantPayment/UpdateTenantPaymentAction.php

@@ -2,6 +2,10 @@
 
 namespace App\Domains\Admin\Actions\UpdateTenantPayment;
 
+use App\Models\AvailablePaymentMethod;
+use App\Models\PaymentMethod;
+use App\Scopes\SiteScope;
+
 class UpdateTenantPaymentAction
 {
     public function __construct(private UpdateTenantPaymentRequest $request)
@@ -18,9 +22,41 @@ class UpdateTenantPaymentAction
             'account_name' => $this->request->accountName,
         ]);
 
+        $this->syncTransferPaymentConfiguration();
+
         $response->success = true;
-        $response->message = 'Bezahldaten wurden gespeichert.';
+        $response->message = 'IBAN-Informationen wurden gespeichert.';
 
         return $response;
     }
+
+    /**
+     * Übernimmt die eingegebenen IBAN-Daten direkt in die Tenant-Config der Überweisungs-Zahlungsart
+     * (Kontoinhaber/IBAN/BIC), damit sie nicht doppelt gepflegt werden müssen. Bestehende weitere
+     * Config-Werte (z.B. Symbol) bleiben erhalten. Der Ziel-Tenant kann ein verwalteter sein, daher
+     * ohne SiteScope explizit auf den Tenant-Slug gefiltert.
+     */
+    private function syncTransferPaymentConfiguration(): void
+    {
+        $slug = PaymentMethod::PAYMENT_ACCOUNT_TRANSACTION;
+
+        $method = AvailablePaymentMethod::withoutGlobalScope(SiteScope::class)
+            ->where('tenant', $this->request->tenant->slug)
+            ->where('slug', $slug)
+            ->first();
+
+        if ($method === null) {
+            return;
+        }
+
+        $method->configuration = PaymentMethod::sanitizeConfiguration($slug, array_merge(
+            $method->configuration ?? [],
+            [
+                'account_owner' => $this->request->accountName,
+                'iban' => $this->request->accountIban,
+                'bic' => $this->request->accountBic,
+            ],
+        ));
+        $method->save();
+    }
 }

app/Domains/Admin/Actions/UpdateTenantTax/UpdateTenantTaxAction.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace App\Domains\Admin\Actions\UpdateTenantTax;
+
+use App\Enumerations\VatPricingMode;
+
+class UpdateTenantTaxAction
+{
+    public function __construct(private UpdateTenantTaxRequest $request)
+    {
+    }
+
+    public function execute(): UpdateTenantTaxResponse
+    {
+        $response = new UpdateTenantTaxResponse();
+
+        if ($this->request->taxLiable) {
+            $this->request->tenant->update([
+                'tax_liable' => true,
+                'vat_rate' => $this->clampVatRate($this->request->vatRate),
+                'vat_pricing_mode' => $this->request->vatPricingMode->value,
+                'tax_exemption_reason' => null,
+                'tax_exemption_note' => null,
+            ]);
+
+            $response->success = true;
+            $response->message = 'Steuerinformationen wurden gespeichert.';
+
+            return $response;
+        }
+
+        $reason = $this->request->exemptionReason;
+
+        if ($reason === null) {
+            $response->message = 'Bitte einen gültigen Befreiungsgrund auswählen.';
+
+            return $response;
+        }
+
+        $note = trim((string)$this->request->exemptionNote);
+
+        if ($reason->requires_note && $note === '') {
+            $response->message = 'Bitte einen Text für den Befreiungsgrund angeben.';
+
+            return $response;
+        }
+
+        $this->request->tenant->update([
+            'tax_liable' => false,
+            'vat_rate' => 0,
+            'vat_pricing_mode' => VatPricingMode::Inclusive->value,
+            'tax_exemption_reason' => $reason->slug,
+            'tax_exemption_note' => $reason->requires_note ? $note : null,
+        ]);
+
+        $response->success = true;
+        $response->message = 'Steuerinformationen wurden gespeichert.';
+
+        return $response;
+    }
+
+    private function clampVatRate(int $vatRate): int
+    {
+        return max(0, min(100, $vatRate));
+    }
+}

app/Domains/Admin/Actions/UpdateTenantTax/UpdateTenantTaxRequest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Domains\Admin\Actions\UpdateTenantTax;
+
+use App\Enumerations\TaxExemptionReason;
+use App\Enumerations\VatPricingMode;
+use App\Models\Tenant;
+
+class UpdateTenantTaxRequest
+{
+    public function __construct(
+        public Tenant $tenant,
+        public bool $taxLiable,
+        public int $vatRate,
+        public ?TaxExemptionReason $exemptionReason,
+        public ?string $exemptionNote,
+        public VatPricingMode $vatPricingMode,
+    )
+    {
+    }
+}

app/Domains/Admin/Actions/UpdateTenantTax/UpdateTenantTaxResponse.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Domains\Admin\Actions\UpdateTenantTax;
+
+class UpdateTenantTaxResponse
+{
+    public bool $success = false;
+    public string $message = '';
+}

app/Domains/Admin/Controllers/ManagedTenantTaxGetController.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace App\Domains\Admin\Controllers;
+
+use App\Enumerations\TaxExemptionReason;
+use App\Enumerations\VatPricingMode;
+use App\Scopes\CommonController;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class ManagedTenantTaxGetController extends CommonController
+{
+    public function __invoke(string $slug, Request $request): JsonResponse
+    {
+        $tenant = $this->adminTenants->findBySlug($slug);
+
+        return response()->json([
+            'tax_liable' => $tenant->tax_liable,
+            'vat_rate' => $tenant->vat_rate,
+            'tax_exemption_reason' => $tenant->tax_exemption_reason,
+            'tax_exemption_note' => $tenant->tax_exemption_note,
+            'vat_pricing_mode' => $tenant->vat_pricing_mode,
+            'exemption_reasons' => TaxExemptionReason::options(),
+            'pricing_modes' => VatPricingMode::options(),
+            'saveEndpoint' => '/api/v1/admin/tenants/' . $slug . '/tax',
+        ]);
+    }
+}

app/Domains/Admin/Controllers/ManagedTenantTaxUpdateController.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace App\Domains\Admin\Controllers;
+
+use App\Domains\Admin\Actions\UpdateTenantTax\UpdateTenantTaxAction;
+use App\Domains\Admin\Actions\UpdateTenantTax\UpdateTenantTaxRequest;
+use App\Enumerations\TaxExemptionReason;
+use App\Enumerations\VatPricingMode;
+use App\Scopes\CommonController;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class ManagedTenantTaxUpdateController extends CommonController
+{
+    public function __invoke(string $slug, Request $request): JsonResponse
+    {
+        $tenant = $this->adminTenants->findBySlug($slug);
+
+        $action = new UpdateTenantTaxAction(new UpdateTenantTaxRequest(
+            tenant: $tenant,
+            taxLiable: $request->boolean('tax_liable'),
+            vatRate: (int)$request->input('vat_rate', 0),
+            exemptionReason: TaxExemptionReason::where('slug', $request->input('tax_exemption_reason'))->first(),
+            exemptionNote: $request->input('tax_exemption_note'),
+            vatPricingMode: VatPricingMode::tryFrom((string) $request->input('vat_pricing_mode', 'inclusive')) ?? VatPricingMode::Inclusive,
+        ));
+
+        $response = $action->execute();
+
+        return response()->json([
+            'status' => $response->success ? 'success' : 'error',
+            'message' => $response->message,
+        ]);
+    }
+}

app/Domains/Admin/Controllers/TenantPaymentMethodsGetController.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Domains\Admin\Controllers;
+
+use App\Models\AvailablePaymentMethod;
+use App\Resources\AvailablePaymentMethodResource;
+use App\Scopes\CommonController;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class TenantPaymentMethodsGetController extends CommonController
+{
+    public function __invoke(Request $request): JsonResponse
+    {
+        return response()->json([
+            'paymentMethods' => AvailablePaymentMethod::all()
+                ->map(fn (AvailablePaymentMethod $method) => new AvailablePaymentMethodResource($method)->toArray($request)),
+            'saveEndpoint' => '/api/v1/admin/tenant/payment-methods',
+        ]);
+    }
+}

app/Domains/Admin/Controllers/TenantPaymentMethodsUpdateController.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Domains\Admin\Controllers;
+
+use App\Domains\Admin\Actions\UpdateAvailablePaymentMethod\UpdateAvailablePaymentMethodAction;
+use App\Domains\Admin\Actions\UpdateAvailablePaymentMethod\UpdateAvailablePaymentMethodRequest;
+use App\Models\AvailablePaymentMethod;
+use App\Scopes\CommonController;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class TenantPaymentMethodsUpdateController extends CommonController
+{
+    public function __invoke(int $id, Request $request): JsonResponse
+    {
+        $availablePaymentMethod = AvailablePaymentMethod::findOrFail($id);
+
+        $action = new UpdateAvailablePaymentMethodAction(new UpdateAvailablePaymentMethodRequest(
+            availablePaymentMethod: $availablePaymentMethod,
+            name: $request->input('name'),
+            description: $request->input('description'),
+            active: (bool) $request->input('active'),
+            configuration: (array) $request->input('configuration', []),
+        ));
+
+        $response = $action->execute();
+
+        return response()->json([
+            'status' => $response->success ? 'success' : 'error',
+            'message' => $response->message,
+        ]);
+    }
+}

app/Domains/Admin/Controllers/TenantTaxGetController.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Domains\Admin\Controllers;
+
+use App\Enumerations\TaxExemptionReason;
+use App\Enumerations\VatPricingMode;
+use App\Scopes\CommonController;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class TenantTaxGetController extends CommonController
+{
+    public function __invoke(Request $request): JsonResponse
+    {
+        return response()->json([
+            'tax_liable' => $this->tenant->tax_liable,
+            'vat_rate' => $this->tenant->vat_rate,
+            'tax_exemption_reason' => $this->tenant->tax_exemption_reason,
+            'tax_exemption_note' => $this->tenant->tax_exemption_note,
+            'vat_pricing_mode' => $this->tenant->vat_pricing_mode,
+            'exemption_reasons' => TaxExemptionReason::options(),
+            'pricing_modes' => VatPricingMode::options(),
+            'saveEndpoint' => '/api/v1/admin/tenant/tax',
+        ]);
+    }
+}

app/Domains/Admin/Controllers/TenantTaxUpdateController.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Domains\Admin\Controllers;
+
+use App\Domains\Admin\Actions\UpdateTenantTax\UpdateTenantTaxAction;
+use App\Domains\Admin\Actions\UpdateTenantTax\UpdateTenantTaxRequest;
+use App\Enumerations\TaxExemptionReason;
+use App\Enumerations\VatPricingMode;
+use App\Scopes\CommonController;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Http\Request;
+
+class TenantTaxUpdateController extends CommonController
+{
+    public function __invoke(Request $request): JsonResponse
+    {
+        $action = new UpdateTenantTaxAction(new UpdateTenantTaxRequest(
+            tenant: $this->tenant,
+            taxLiable: $request->boolean('tax_liable'),
+            vatRate: (int)$request->input('vat_rate', 0),
+            exemptionReason: TaxExemptionReason::where('slug', $request->input('tax_exemption_reason'))->first(),
+            exemptionNote: $request->input('tax_exemption_note'),
+            vatPricingMode: VatPricingMode::tryFrom((string) $request->input('vat_pricing_mode', 'inclusive')) ?? VatPricingMode::Inclusive,
+        ));
+
+        $response = $action->execute();
+
+        return response()->json([
+            'status' => $response->success ? 'success' : 'error',
+            'message' => $response->message,
+        ]);
+    }
+}

app/Domains/Admin/Routes/api.php

@@ -1,10 +1,5 @@
 <?php
 
-use App\Domains\Admin\Controllers\UserDetailGetController;
-use App\Domains\Admin\Controllers\UserListApiController;
-use App\Domains\Admin\Controllers\UserResetPasswordController;
-use App\Domains\Admin\Controllers\UserToggleActiveController;
-use App\Domains\Admin\Controllers\UserUpdateController;
 use App\Domains\Admin\Controllers\ManagedTenantContactGetController;
 use App\Domains\Admin\Controllers\ManagedTenantContactUpdateController;
 use App\Domains\Admin\Controllers\ManagedTenantGdprGetController;
@@ -13,6 +8,8 @@ use App\Domains\Admin\Controllers\ManagedTenantImpressGetController;
 use App\Domains\Admin\Controllers\ManagedTenantImpressUpdateController;
 use App\Domains\Admin\Controllers\ManagedTenantPaymentGetController;
 use App\Domains\Admin\Controllers\ManagedTenantPaymentUpdateController;
+use App\Domains\Admin\Controllers\ManagedTenantTaxGetController;
+use App\Domains\Admin\Controllers\ManagedTenantTaxUpdateController;
 use App\Domains\Admin\Controllers\TenantContactGetController;
 use App\Domains\Admin\Controllers\TenantContactUpdateController;
 use App\Domains\Admin\Controllers\TenantCreateController;
@@ -24,7 +21,16 @@ use App\Domains\Admin\Controllers\TenantImpressGetController;
 use App\Domains\Admin\Controllers\TenantImpressUpdateController;
 use App\Domains\Admin\Controllers\TenantListApiController;
 use App\Domains\Admin\Controllers\TenantPaymentGetController;
+use App\Domains\Admin\Controllers\TenantPaymentMethodsGetController;
+use App\Domains\Admin\Controllers\TenantPaymentMethodsUpdateController;
 use App\Domains\Admin\Controllers\TenantPaymentUpdateController;
+use App\Domains\Admin\Controllers\TenantTaxGetController;
+use App\Domains\Admin\Controllers\TenantTaxUpdateController;
+use App\Domains\Admin\Controllers\UserDetailGetController;
+use App\Domains\Admin\Controllers\UserListApiController;
+use App\Domains\Admin\Controllers\UserResetPasswordController;
+use App\Domains\Admin\Controllers\UserToggleActiveController;
+use App\Domains\Admin\Controllers\UserUpdateController;
 use App\Middleware\AdminRoleMiddleware;
 use App\Middleware\IdentifyTenant;
 use App\Middleware\LvOnlyMiddleware;
@@ -36,10 +42,14 @@ Route::middleware([IdentifyTenant::class, 'auth', AdminRoleMiddleware::class])->
         Route::post('/contact', TenantContactUpdateController::class);
         Route::get('/payment', TenantPaymentGetController::class);
         Route::post('/payment', TenantPaymentUpdateController::class);
+        Route::get('/payment-methods', TenantPaymentMethodsGetController::class);
+        Route::post('/payment-methods/{id}', TenantPaymentMethodsUpdateController::class);
         Route::get('/impress', TenantImpressGetController::class);
         Route::post('/impress', TenantImpressUpdateController::class);
         Route::get('/gdpr', TenantGdprGetController::class);
         Route::post('/gdpr', TenantGdprUpdateController::class);
+        Route::get('/tax', TenantTaxGetController::class);
+        Route::post('/tax', TenantTaxUpdateController::class);
     });
 
     Route::prefix('api/v1/admin/users')->group(function () {
@@ -65,6 +75,8 @@ Route::middleware([IdentifyTenant::class, 'auth', AdminRoleMiddleware::class])->
                 Route::post('/impress', ManagedTenantImpressUpdateController::class);
                 Route::get('/gdpr', ManagedTenantGdprGetController::class);
                 Route::post('/gdpr', ManagedTenantGdprUpdateController::class);
+                Route::get('/tax', ManagedTenantTaxGetController::class);
+                Route::post('/tax', ManagedTenantTaxUpdateController::class);
             });
         });
     });

app/Domains/Admin/Views/Partials/TenantPaymentMethods.vue

@@ -0,0 +1,264 @@
+<script setup>
+import {computed, ref} from 'vue';
+import FullScreenModal from "../../../../Views/Components/FullScreenModal.vue";
+import TextEditor from "../../../../Views/Components/TextEditor.vue";
+import RichSelectBox from "../../../../Views/Components/RichSelectBox.vue";
+import {PAYMENT_METHOD_ICONS} from "../../../../../resources/js/constants/paymentMethodIcons.js";
+import {useAjax} from "../../../../../resources/js/components/ajaxHandler.js";
+import {toast} from "vue3-toastify";
+
+const props = defineProps({
+    data: {
+        type: Object,
+        default: () => ({})
+    },
+})
+
+const { request } = useAjax()
+
+const paymentMethods = ref(props.data.paymentMethods ?? [])
+const editing = ref(null)
+const form = ref({ name: '', description: '', active: true, configuration: {} })
+
+// Sind alle Pflichtfelder des aktuell bearbeiteten Moduls befüllt? Der Server ist die
+// eigentliche Autorität (Guard), das hier dient nur der Bedienführung.
+const requiredComplete = computed(() => {
+    if (!editing.value) return true
+    return (editing.value.optionsSchema ?? [])
+        .filter(option => option.required)
+        .every(option => {
+            const value = form.value.configuration[option.name]
+            return value !== undefined && value !== null && value !== ''
+        })
+})
+
+function edit(paymentMethod) {
+    editing.value = paymentMethod
+    const configuration = {}
+    for (const option of paymentMethod.optionsSchema ?? []) {
+        configuration[option.name] = paymentMethod.configuration?.[option.name] ?? ''
+    }
+    form.value = {
+        name: paymentMethod.name,
+        description: paymentMethod.description ?? '',
+        active: paymentMethod.active,
+        configuration,
+    }
+}
+
+function close() {
+    editing.value = null
+}
+
+async function save() {
+    const response = await request('/api/v1/admin/tenant/payment-methods/' + editing.value.id, {
+        method: 'POST',
+        body: form.value,
+    })
+
+    if (response && response.status === 'success') {
+        toast.success(response.message)
+        Object.assign(editing.value, form.value)
+        close()
+    } else {
+        toast.error(response?.message ?? 'Fehler beim Speichern')
+    }
+}
+</script>
+
+<template>
+    <table class="payment-method-table">
+        <thead>
+            <tr>
+                <th>Name</th>
+                <th>Status</th>
+                <th class="empty"></th>
+            </tr>
+        </thead>
+        <tbody>
+            <tr v-for="paymentMethod in paymentMethods" :key="paymentMethod.id">
+                <td>{{ paymentMethod.name }}</td>
+                <td>
+                    <span :class="paymentMethod.active ? 'badge-active' : 'badge-inactive'">
+                        {{ paymentMethod.active ? 'Aktiv' : 'Inaktiv' }}
+                    </span>
+                </td>
+                <td>
+                    <button class="btn-edit" @click="edit(paymentMethod)">Bearbeiten</button>
+                </td>
+            </tr>
+        </tbody>
+    </table>
+
+    <FullScreenModal :show="editing !== null" @close="close">
+        <template v-if="editing">
+            <h2>Zahlungsmodul bearbeiten</h2>
+            <table class="data-table">
+                <tr><th>Name</th><td><input type="text" v-model="form.name" class="form-input" /></td></tr>
+                <tr><th>Beschreibung</th><td><textarea v-model="form.description" class="form-input"></textarea></td></tr>
+                <tr v-for="option in editing.optionsSchema ?? []" :key="option.name">
+                    <th>{{ option.label }}<span v-if="option.required" class="required-marker">*</span></th>
+                    <td>
+                        <RichSelectBox v-if="option.type === 'icon'" v-model="form.configuration[option.name]"
+                                       :options="PAYMENT_METHOD_ICONS" placeholder="Symbol wählen…"/>
+                        <TextEditor v-else-if="option.type === 'richtext'" v-model="form.configuration[option.name]"/>
+                        <input v-else type="text" v-model="form.configuration[option.name]" class="form-input"/>
+                        <span v-if="option.hint" class="option-hint">{{ option.hint }}</span>
+                    </td>
+                </tr>
+                <tr>
+                    <th>Aktiv</th>
+                    <td>
+                        <input type="checkbox" v-model="form.active" :disabled="!requiredComplete && !form.active" />
+                        <span v-if="!requiredComplete" class="hint">Bitte zuerst alle Pflichtfelder (*) ausfüllen, um zu aktivieren.</span>
+                    </td>
+                </tr>
+            </table>
+            <div class="btn-group">
+                <button class="btn-save" @click="save">Speichern</button>
+                <button class="btn-cancel" @click="close">Abbrechen</button>
+            </div>
+        </template>
+    </FullScreenModal>
+</template>
+
+<style scoped>
+.payment-method-table {
+    width: 100%;
+    border-collapse: collapse;
+    border: 1px solid #d1d5db;
+    border-radius: 8px;
+    overflow: hidden;
+}
+
+.payment-method-table thead th {
+    text-align: left;
+    padding: 10px 16px;
+    background-color: #f9fafb;
+    color: #374151;
+    font-weight: bold;
+    border-bottom: 2px solid #d1d5db;
+}
+
+.payment-method-table tbody td {
+    padding: 10px 16px;
+    border-bottom: 1px solid #e5e7eb;
+}
+
+.badge-active {
+    display: inline-block;
+    padding: 3px 12px;
+    border-radius: 12px;
+    font-size: 0.85rem;
+    font-weight: bold;
+    color: #166534;
+    background-color: #dcfce7;
+    border: 1px solid #22c55e;
+}
+
+.badge-inactive {
+    display: inline-block;
+    padding: 3px 12px;
+    border-radius: 12px;
+    font-size: 0.85rem;
+    font-weight: bold;
+    color: #991b1b;
+    background-color: #fee2e2;
+    border: 1px solid #ef4444;
+}
+
+.btn-edit {
+    padding: 6px 16px;
+    border: none;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: bold;
+    font-size: 0.9rem;
+    background-color: #1d4899;
+    color: #ffffff;
+}
+
+.btn-edit:hover {
+    background-color: #163a7a;
+}
+
+.data-table {
+    width: 100%;
+    border-collapse: collapse;
+    margin-top: 15px;
+}
+
+.data-table th {
+    text-align: left;
+    padding: 8px 12px;
+    width: 200px;
+    color: #374151;
+    border-bottom: 1px solid #e5e7eb;
+}
+
+.data-table td {
+    padding: 8px 12px;
+    border-bottom: 1px solid #e5e7eb;
+}
+
+.form-input {
+    width: 100%;
+    padding: 6px 10px;
+    border: 1px solid #d1d5db;
+    border-radius: 6px;
+    font-size: 0.95rem;
+    box-sizing: border-box;
+}
+
+.required-marker {
+    color: #ef4444;
+    margin-left: 2px;
+}
+
+.hint {
+    display: block;
+    margin-top: 4px;
+    font-size: 0.8rem;
+    color: #b45309;
+}
+
+.option-hint {
+    display: block;
+    margin-top: 4px;
+    font-size: 0.8rem;
+    color: #6b7280;
+}
+
+.btn-group {
+    display: flex;
+    gap: 10px;
+    margin-top: 15px;
+}
+
+.btn-save, .btn-cancel {
+    padding: 8px 20px;
+    border: none;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: bold;
+    font-size: 0.9rem;
+}
+
+.btn-save {
+    background-color: #16a34a;
+    color: #ffffff;
+}
+
+.btn-save:hover {
+    background-color: #15803d;
+}
+
+.btn-cancel {
+    background-color: #e5e7eb;
+    color: #374151;
+}
+
+.btn-cancel:hover {
+    background-color: #d1d5db;
+}
+</style>

app/Domains/Admin/Views/Partials/TenantTaxInfo.vue

@@ -0,0 +1,240 @@
+<script setup>
+import {computed, ref} from 'vue';
+import {useAjax} from "../../../../../resources/js/components/ajaxHandler.js";
+import RichSelectBox from "../../../../Views/Components/RichSelectBox.vue";
+import {toast} from "vue3-toastify";
+
+const props = defineProps({
+    data: {
+        type: Object,
+        default: () => ({})
+    },
+})
+
+const {request} = useAjax()
+
+const editing = ref(false)
+
+const reasons = computed(() => props.data.exemption_reasons ?? [])
+const pricingModes = computed(() => props.data.pricing_modes ?? [])
+
+const liableOptions = [
+    {value: '1', label: 'Ja – Umsatzsteuer wird erhoben'},
+    {value: '0', label: 'Nein – umsatzsteuerbefreit'},
+]
+
+const form = ref({
+    tax_liable: props.data.tax_liable ? '1' : '0',
+    vat_rate: props.data.vat_rate ?? 0,
+    tax_exemption_reason: props.data.tax_exemption_reason ?? '',
+    tax_exemption_note: props.data.tax_exemption_note ?? '',
+    vat_pricing_mode: props.data.vat_pricing_mode ?? 'inclusive',
+})
+
+const isLiable = computed(() => form.value.tax_liable === '1')
+const isCustomReason = computed(() => form.value.tax_exemption_reason === 'custom')
+
+const selectedReason = computed(
+    () => reasons.value.find(r => r.value === form.value.tax_exemption_reason) ?? null
+)
+
+const pricingModeLabel = computed(
+    () => pricingModes.value.find(m => m.value === form.value.vat_pricing_mode)?.label ?? '—'
+)
+
+// Vorschau des Pflichthinweises nach § 14 Abs. 4 Nr. 8 UStG, der später auf der Rechnung erscheint.
+const invoiceHint = computed(() => {
+    if (isLiable.value) {
+        return `Umsatzsteuerpflichtig – USt-Satz: ${form.value.vat_rate || 0} %`
+    }
+    if (isCustomReason.value) {
+        return form.value.tax_exemption_note?.trim() || '—'
+    }
+    return selectedReason.value?.text || '—'
+})
+
+const reasonLabel = computed(() => selectedReason.value?.label ?? '—')
+
+async function save() {
+    const saveUrl = props.data.saveEndpoint ?? '/api/v1/admin/tenant/tax'
+    const response = await request(saveUrl, {
+        method: 'POST',
+        body: {
+            tax_liable: isLiable.value,
+            vat_rate: Number(form.value.vat_rate) || 0,
+            tax_exemption_reason: isLiable.value ? null : form.value.tax_exemption_reason,
+            tax_exemption_note: form.value.tax_exemption_note,
+            vat_pricing_mode: form.value.vat_pricing_mode,
+        },
+    })
+
+    if (response && response.status === 'success') {
+        toast.success(response.message)
+        editing.value = false
+    } else {
+        toast.error(response?.message ?? 'Fehler beim Speichern')
+    }
+}
+</script>
+
+<template>
+    <div v-if="!editing">
+        <table class="data-table">
+            <tr>
+                <th>Steuerpflicht</th>
+                <td>{{ isLiable ? 'Ja – Umsatzsteuer wird erhoben' : 'Nein – umsatzsteuerbefreit' }}</td>
+            </tr>
+            <tr v-if="isLiable">
+                <th>USt-Satz</th>
+                <td>{{ form.vat_rate || 0 }} %</td>
+            </tr>
+            <tr v-if="isLiable">
+                <th>Preismodus</th>
+                <td>{{ pricingModeLabel }}</td>
+            </tr>
+            <tr v-else>
+                <th>Befreiungsgrund</th>
+                <td>{{ reasonLabel }}</td>
+            </tr>
+            <tr>
+                <th>Rechnungshinweis</th>
+                <td>{{ invoiceHint }}</td>
+            </tr>
+        </table>
+        <button class="btn-edit" @click="editing = true">Bearbeiten</button>
+    </div>
+
+    <div v-else>
+        <table class="data-table">
+            <tr>
+                <th>Steuerpflicht</th>
+                <td>
+                    <RichSelectBox v-model="form.tax_liable" :options="liableOptions"/>
+                </td>
+            </tr>
+
+            <tr v-if="isLiable">
+                <th>USt-Satz (%)</th>
+                <td><input type="number" min="0" max="100" v-model.number="form.vat_rate" class="form-input"/></td>
+            </tr>
+            <tr v-if="isLiable">
+                <th>Preismodus</th>
+                <td>
+                    <RichSelectBox v-model="form.vat_pricing_mode" :options="pricingModes"/>
+                </td>
+            </tr>
+
+            <template v-else>
+                <tr>
+                    <th>Befreiungsgrund</th>
+                    <td>
+                        <RichSelectBox
+                            v-model="form.tax_exemption_reason"
+                            :options="reasons"
+                            placeholder="Grund auswählen…"
+                        />
+                    </td>
+                </tr>
+                <tr v-if="isCustomReason">
+                    <th>Freitext</th>
+                    <td>
+                        <textarea
+                            v-model="form.tax_exemption_note"
+                            class="form-input"
+                            rows="3"
+                            placeholder="Hinweistext für die Rechnung…"
+                        ></textarea>
+                    </td>
+                </tr>
+            </template>
+
+            <tr>
+                <th>Rechnungshinweis</th>
+                <td class="hint-preview">{{ invoiceHint }}</td>
+            </tr>
+        </table>
+        <div class="btn-group">
+            <button class="btn-save" @click="save">Speichern</button>
+            <button class="btn-cancel" @click="editing = false">Abbrechen</button>
+        </div>
+    </div>
+</template>
+
+<style scoped>
+.data-table {
+    width: 100%;
+    border-collapse: collapse;
+}
+
+.data-table th {
+    text-align: left;
+    padding: 8px 12px;
+    width: 200px;
+    color: #374151;
+    border-bottom: 1px solid #e5e7eb;
+    vertical-align: top;
+}
+
+.data-table td {
+    padding: 8px 12px;
+    border-bottom: 1px solid #e5e7eb;
+}
+
+.form-input {
+    width: 100%;
+    padding: 6px 10px;
+    border: 1px solid #d1d5db;
+    border-radius: 6px;
+    font-size: 0.95rem;
+    box-sizing: border-box;
+    font-family: inherit;
+}
+
+.hint-preview {
+    color: #6b7280;
+    font-style: italic;
+}
+
+.btn-edit, .btn-save, .btn-cancel {
+    margin-top: 15px;
+    padding: 8px 20px;
+    border: none;
+    border-radius: 6px;
+    cursor: pointer;
+    font-weight: bold;
+    font-size: 0.9rem;
+}
+
+.btn-edit {
+    background-color: #1d4899;
+    color: #ffffff;
+}
+
+.btn-edit:hover {
+    background-color: #163a7a;
+}
+
+.btn-save {
+    background-color: #16a34a;
+    color: #ffffff;
+}
+
+.btn-save:hover {
+    background-color: #15803d;
+}
+
+.btn-cancel {
+    background-color: #e5e7eb;
+    color: #374151;
+    margin-left: 10px;
+}
+
+.btn-cancel:hover {
+    background-color: #d1d5db;
+}
+
+.btn-group {
+    display: flex;
+    gap: 10px;
+}
+</style>

app/Domains/Admin/Views/TenantData.vue

@@ -6,6 +6,8 @@ import TenantContact from "./Partials/TenantContact.vue";
 import TenantPayment from "./Partials/TenantPayment.vue";
 import TenantImpress from "./Partials/TenantImpress.vue";
 import TenantGdpr from "./Partials/TenantGdpr.vue";
+import TenantPaymentMethods from "./Partials/TenantPaymentMethods.vue";
+import TenantTaxInfo from "./Partials/TenantTaxInfo.vue";
 
 const props = defineProps({
     tenant: Object,
@@ -18,10 +20,20 @@ const tabs = [
         endpoint: '/api/v1/admin/tenant/contact',
     },
     {
-        title: 'Bezahldaten',
+        title: 'IBAN-Informationen',
         component: TenantPayment,
         endpoint: '/api/v1/admin/tenant/payment',
     },
+    {
+        title: 'Zahlungsmodule',
+        component: TenantPaymentMethods,
+        endpoint: '/api/v1/admin/tenant/payment-methods',
+    },
+    {
+        title: 'Steuerinformationen',
+        component: TenantTaxInfo,
+        endpoint: '/api/v1/admin/tenant/tax',
+    },
     {
         title: 'Impressum',
         component: TenantImpress,

app/Domains/Admin/Views/TenantEdit.vue

@@ -7,6 +7,7 @@ import TenantContact from "./Partials/TenantContact.vue";
 import TenantPayment from "./Partials/TenantPayment.vue";
 import TenantImpress from "./Partials/TenantImpress.vue";
 import TenantGdpr from "./Partials/TenantGdpr.vue";
+import TenantTaxInfo from "./Partials/TenantTaxInfo.vue";
 
 const props = defineProps({
     tenant: Object,
@@ -26,10 +27,15 @@ const tabs = [
         endpoint: '/api/v1/admin/tenants/' + slug + '/contact',
     },
     {
-        title: 'Bezahldaten',
+        title: 'IBAN-Informationen',
         component: TenantPayment,
         endpoint: '/api/v1/admin/tenants/' + slug + '/payment',
     },
+    {
+        title: 'Steuerinformationen',
+        component: TenantTaxInfo,
+        endpoint: '/api/v1/admin/tenants/' + slug + '/tax',
+    },
     {
         title: 'Impressum',
         component: TenantImpress,

app/Domains/Event/Actions/CreateEvent/CreateEventCommand.php

@@ -3,10 +3,12 @@
 namespace App\Domains\Event\Actions\CreateEvent;
 
 use App\Enumerations\EatingHabit;
+use App\Models\AvailablePaymentMethod;
 use App\Models\Event;
 use App\Models\Tenant;
 use App\RelationModels\EventEatingHabits;
 use App\RelationModels\EventLocalGroups;
+use App\RelationModels\EventPaymentMethods;
 use Illuminate\Support\Str;
 
 class CreateEventCommand {
@@ -41,10 +43,17 @@ class CreateEventCommand {
             'account_iban' => $this->request->accountIban,
             'participation_fee_type' => $this->request->participationFeeType->slug,
             'pay_per_day' => $this->request->payPerDay,
-            'pay_direct' => $this->request->payDirect,
+            'pay_direct' => false,
             'total_max_amount' => 0,
             'support_per_person' => 0,
             'support_flat' => 0,
+            // Umsatzsteuerliche Grundlage bei Anlage einfrieren (unveränderlich), damit Preisermittlung und
+            // spätere Rechnungen von späteren Tenant-Änderungen unberührt bleiben.
+            'tax_liable' => app('tenant')->tax_liable,
+            'vat_rate' => app('tenant')->vat_rate,
+            'vat_pricing_mode' => app('tenant')->vat_pricing_mode,
+            'tax_exemption_reason' => app('tenant')->tax_exemption_reason,
+            'tax_exemption_note' => app('tenant')->tax_exemption_note,
         ]);
 
         if ($event !== null) {
@@ -58,6 +67,14 @@ class CreateEventCommand {
                 'eating_habit_id' => EatingHabit::where('slug', EatingHabit::EATING_HABIT_VEGETARIAN)->first()->id,
             ]);
 
+            foreach (AvailablePaymentMethod::where('active', true)->get() as $availablePaymentMethod) {
+                EventPaymentMethods::create([
+                    'event_id' => $event->id,
+                    'slug' => $availablePaymentMethod->slug,
+                    'configuration' => $availablePaymentMethod->configuration ?? [],
+                ]);
+            }
+
             if (app('tenant')->slug === 'lv') {
                 foreach(Tenant::where(['is_active_local_group' => true])->get() as $tenant) {
                     EventLocalGroups::create(['event_id' => $event->id, 'local_group_id' => $tenant->id]);

app/Domains/Event/Actions/CreateEvent/CreateEventRequest.php

@@ -19,9 +19,8 @@ class CreateEventRequest {
     public string $accountOwner;
     public string $accountIban;
     public bool $payPerDay;
-    public bool $payDirect;
 
-    public function __construct(string $name, string $location, string $postalCode, string $email, DateTime $begin, DateTime $end, DateTime $earlyBirdEnd, DateTime $registrationFinalEnd, int $earlyBirdEndAmountIncrease, ParticipationFeeType $participationFeeType, string $accountOwner, string $accountIban, bool $payPerDay, bool $payDirect) {
+    public function __construct(string $name, string $location, string $postalCode, string $email, DateTime $begin, DateTime $end, DateTime $earlyBirdEnd, DateTime $registrationFinalEnd, int $earlyBirdEndAmountIncrease, ParticipationFeeType $participationFeeType, string $accountOwner, string $accountIban, bool $payPerDay) {
         $this->name = $name;
         $this->location = $location;
         $this->postalCode = $postalCode;
@@ -35,6 +34,5 @@ class CreateEventRequest {
         $this->accountOwner = $accountOwner;
         $this->accountIban = $accountIban;
         $this->payPerDay = $payPerDay;
-        $this->payDirect = $payDirect;
     }
 }

app/Domains/Event/Actions/SetEventAddons/SetEventAddonsCommand.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetEventAddons;
+
+use App\ValueObjects\Amount;
+use Illuminate\Support\Str;
+
+class SetEventAddonsCommand
+{
+    public function __construct(private SetEventAddonsRequest $request)
+    {
+    }
+
+    public function execute(): SetEventAddonsResponse
+    {
+        $response = new SetEventAddonsResponse();
+
+        $this->request->event->addons = $this->normalize($this->request->addons);
+        $this->request->event->save();
+
+        $response->success = true;
+        return $response;
+    }
+
+    /**
+     * Normalisiert die rohe Addon-Definition: trimmt Titel/Beschreibung, parst den Preis (≥ 0), erzwingt den
+     * Titel als Pflichtfeld und generiert stabile Keys (Bestandsschutz für bereits gespeicherte Buchungen).
+     *
+     * @param array<int, array<string, mixed>> $addons
+     * @return array<int, array{key: string, title: string, description: string, price: float, flat: bool}>
+     */
+    private function normalize(array $addons): array
+    {
+        $normalized = [];
+        $usedKeys = [];
+
+        foreach ($addons as $addon) {
+            $title = trim((string)($addon['title'] ?? ''));
+            if ($title === '') {
+                continue;
+            }
+
+            $price = Amount::fromString((string)($addon['price'] ?? '0'))->getAmount();
+            if ($price < 0) {
+                $price = 0.0;
+            }
+
+            $key = $this->uniqueSlug((string)($addon['key'] ?? ''), $title, $usedKeys);
+            $usedKeys[] = $key;
+
+            $normalized[] = [
+                'key' => $key,
+                'title' => $title,
+                'description' => trim((string)($addon['description'] ?? '')),
+                'price' => round($price, 2),
+                'flat' => (bool)($addon['flat'] ?? false),
+            ];
+        }
+
+        return $normalized;
+    }
+
+    /**
+     * Liefert einen eindeutigen Slug: bevorzugt den bestehenden Wert, sonst aus dem Titel abgeleitet;
+     * Kollisionen werden durchnummeriert.
+     *
+     * @param array<int, string> $used
+     */
+    private function uniqueSlug(string $existing, string $title, array $used): string
+    {
+        $base = $existing !== '' ? $existing : Str::slug($title);
+        if ($base === '') {
+            $base = 'addon';
+        }
+
+        $candidate = $base;
+        $suffix = 2;
+        while (in_array($candidate, $used, true)) {
+            $candidate = $base . '-' . $suffix;
+            $suffix++;
+        }
+
+        return $candidate;
+    }
+}

app/Domains/Event/Actions/SetEventAddons/SetEventAddonsRequest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetEventAddons;
+
+use App\Models\Event;
+
+class SetEventAddonsRequest
+{
+    public Event $event;
+
+    /** @var array<int, array<string, mixed>> Rohe Addon-Definition aus dem Admin-Panel. */
+    public array $addons;
+
+    public function __construct(Event $event, array $addons)
+    {
+        $this->event = $event;
+        $this->addons = $addons;
+    }
+}

app/Domains/Event/Actions/SetEventAddons/SetEventAddonsResponse.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetEventAddons;
+
+class SetEventAddonsResponse
+{
+    public bool $success;
+    public ?string $message;
+
+    public function __construct()
+    {
+        $this->success = false;
+        $this->message = null;
+    }
+}

app/Domains/Event/Actions/SetParticipationOptions/SetParticipationOptionsCommand.php

@@ -0,0 +1,115 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetParticipationOptions;
+
+use Illuminate\Support\Str;
+
+class SetParticipationOptionsCommand
+{
+    public function __construct(private SetParticipationOptionsRequest $request)
+    {
+    }
+
+    public function execute(): SetParticipationOptionsResponse
+    {
+        $response = new SetParticipationOptionsResponse();
+
+        $this->request->event->participation_options = $this->normalize($this->request->questions);
+        $this->request->event->save();
+
+        $response->success = true;
+        return $response;
+    }
+
+    /**
+     * Normalisiert die rohe Fragen-Definition: trimmt Labels, generiert stabile Keys/Values und verwirft
+     * unvollständige Fragen (kein Label oder keine gültige Option). Keys/Values sind innerhalb ihres
+     * Geltungsbereichs eindeutig, damit Antworten robust referenzieren können.
+     *
+     * @param array<int, array<string, mixed>> $questions
+     * @return array<int, array{key: string, title: string, label: string, options: array<int, array{value: string, label: string}>}>
+     */
+    private function normalize(array $questions): array
+    {
+        $normalized = [];
+        $usedKeys = [];
+
+        foreach ($questions as $question) {
+            // Titel ist Pflicht (Überschrift/Feldbeschriftung); die Frage ist optionaler Erklärtext.
+            $title = trim((string)($question['title'] ?? ''));
+            if ($title === '') {
+                continue;
+            }
+
+            $label = trim((string)($question['label'] ?? ''));
+
+            $options = $this->normalizeOptions($question['options'] ?? []);
+            if ($options === []) {
+                continue;
+            }
+
+            $key = $this->uniqueSlug((string)($question['key'] ?? ''), $title, $usedKeys);
+            $usedKeys[] = $key;
+
+            $normalized[] = [
+                'key' => $key,
+                'title' => $title,
+                'label' => $label,
+                'options' => $options,
+            ];
+        }
+
+        return $normalized;
+    }
+
+    /**
+     * @param array<int, array<string, mixed>> $options
+     * @return array<int, array{value: string, label: string}>
+     */
+    private function normalizeOptions(mixed $options): array
+    {
+        if (!is_array($options)) {
+            return [];
+        }
+
+        $normalized = [];
+        $usedValues = [];
+
+        foreach ($options as $option) {
+            $label = trim((string)($option['label'] ?? ''));
+            if ($label === '') {
+                continue;
+            }
+
+            $value = $this->uniqueSlug((string)($option['value'] ?? ''), $label, $usedValues);
+            $usedValues[] = $value;
+
+            $normalized[] = ['value' => $value, 'label' => $label];
+        }
+
+        return $normalized;
+    }
+
+    /**
+     * Liefert einen eindeutigen Slug: bevorzugt den bestehenden Wert (Bestandsschutz für schon gespeicherte
+     * Fragen/Antworten), sonst aus dem Label abgeleitet; Kollisionen werden durchnummeriert.
+     *
+     * @param array<int, string> $used
+     */
+    private function uniqueSlug(string $existing, string $label, array $used): string
+    {
+        $base = $existing !== '' ? $existing : Str::slug($label);
+        if ($base === '') {
+            $base = 'option';
+        }
+
+        $candidate = $base;
+        $suffix = 2;
+        while (in_array($candidate, $used, true)) {
+            $candidate = $base . '-' . $suffix;
+            $suffix++;
+        }
+
+        return $candidate;
+    }
+}

app/Domains/Event/Actions/SetParticipationOptions/SetParticipationOptionsRequest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetParticipationOptions;
+
+use App\Models\Event;
+
+class SetParticipationOptionsRequest
+{
+    public Event $event;
+
+    /** @var array<int, array<string, mixed>> Rohe Fragen-Definition aus dem Admin-Panel. */
+    public array $questions;
+
+    public function __construct(Event $event, array $questions)
+    {
+        $this->event = $event;
+        $this->questions = $questions;
+    }
+}

app/Domains/Event/Actions/SetParticipationOptions/SetParticipationOptionsResponse.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetParticipationOptions;
+
+class SetParticipationOptionsResponse
+{
+    public bool $success;
+    public ?string $message;
+
+    public function __construct()
+    {
+        $this->success = false;
+        $this->message = null;
+    }
+}

app/Domains/Event/Actions/SetPaymentMethods/SetPaymentMethodsCommand.php

@@ -0,0 +1,82 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetPaymentMethods;
+
+use App\Models\AvailablePaymentMethod;
+use App\Models\PaymentMethod;
+use App\RelationModels\EventPaymentMethods;
+
+class SetPaymentMethodsCommand
+{
+    public SetPaymentMethodsRequest $request;
+
+    public function __construct(SetPaymentMethodsRequest $request)
+    {
+        $this->request = $request;
+    }
+
+    public function execute(): SetPaymentMethodsResponse
+    {
+        $response = new SetPaymentMethodsResponse();
+
+        if (count($this->request->paymentMethods) === 0) {
+            $response->success = false;
+            $response->message = 'Mindestens eine Zahlungsmöglichkeit muss ausgewählt sein.';
+            return $response;
+        }
+
+        $this->syncPaymentMethods();
+
+        $this->request->event->save();
+        $response->success = true;
+
+        return $response;
+    }
+
+    /**
+     * Differenzieller Sync der Zahlungsmethoden mit Snapshot-Copy-Semantik:
+     * - entfernte Methoden werden gelöscht,
+     * - neue Methoden erhalten einen Snapshot der Tenant-Config (oder eines expliziten Overrides),
+     * - bestehende Methoden behalten ihre pro-Event-Config, sofern kein Override übergeben wird.
+     */
+    private function syncPaymentMethods(): void
+    {
+        $event = $this->request->event;
+        $desiredSlugs = $this->request->paymentMethods;
+        $overrides = $this->request->paymentMethodConfigurations;
+
+        $existing = EventPaymentMethods::where('event_id', $event->id)->get()->keyBy('slug');
+
+        // Nicht mehr gewünschte Methoden entfernen.
+        foreach ($existing as $slug => $row) {
+            if (!in_array($slug, $desiredSlugs, true)) {
+                $row->delete();
+            }
+        }
+
+        // Tenant-Instanzen (für Snapshot-Kopie neuer Methoden) laden.
+        $tenantMethods = AvailablePaymentMethod::whereIn('slug', $desiredSlugs)->get()->keyBy('slug');
+
+        foreach ($desiredSlugs as $slug) {
+            $override = $overrides[$slug] ?? null;
+
+            if (isset($existing[$slug])) {
+                // Bestehende Zuweisung: Config nur bei explizitem Override anpassen, sonst unverändert lassen.
+                if ($override !== null) {
+                    $row = $existing[$slug];
+                    $row->configuration = PaymentMethod::sanitizeConfiguration($slug, $override);
+                    $row->save();
+                }
+                continue;
+            }
+
+            // Neue Zuweisung: expliziter Override oder Snapshot der Tenant-Config.
+            $snapshot = $override ?? ($tenantMethods[$slug]->configuration ?? []);
+            EventPaymentMethods::create([
+                'event_id' => $event->id,
+                'slug' => $slug,
+                'configuration' => PaymentMethod::sanitizeConfiguration($slug, $snapshot ?? []),
+            ]);
+        }
+    }
+}

app/Domains/Event/Actions/SetPaymentMethods/SetPaymentMethodsRequest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetPaymentMethods;
+
+use App\Models\Event;
+
+class SetPaymentMethodsRequest
+{
+    public Event $event;
+
+    /**
+     * Gewünschte Zahlungsmethoden-Slugs für das Event.
+     *
+     * @var array<int, string>
+     */
+    public array $paymentMethods;
+
+    /**
+     * Optionale pro-Event-Config-Overrides je Zahlungsmethode: [slug => [option => value]].
+     * Fehlt ein Slug, bleibt die bestehende Config erhalten bzw. wird beim ersten Zuweisen
+     * aus der Tenant-Config als Snapshot kopiert.
+     *
+     * @var array<string, array<string, mixed>>
+     */
+    public array $paymentMethodConfigurations;
+
+    public function __construct(Event $event, array $paymentMethods, array $paymentMethodConfigurations = [])
+    {
+        $this->event = $event;
+        $this->paymentMethods = $paymentMethods;
+        $this->paymentMethodConfigurations = $paymentMethodConfigurations;
+    }
+}

app/Domains/Event/Actions/SetPaymentMethods/SetPaymentMethodsResponse.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace App\Domains\Event\Actions\SetPaymentMethods;
+
+class SetPaymentMethodsResponse
+{
+    public bool $success = false;
+    public string $message = '';
+}

app/Domains/Event/Actions/SignUp/SignUpCommand.php

@@ -4,6 +4,7 @@ namespace App\Domains\Event\Actions\SignUp;
 
 use App\Enumerations\EatingHabit;
 use App\Enumerations\EfzStatus;
+use App\EventPaymentModules\EventPaymentModuleRegistry;
 use App\ValueObjects\Age;
 use Illuminate\Support\Str;
 
@@ -14,6 +15,26 @@ class SignUpCommand {
     public function execute() : SignUpResponse {
         $response = new SignUpResponse();
 
+        // Teilnehmer-Eingaben der gewählten Zahlungsart gegen das Modul-Schema absichern.
+        $module = $this->request->paymentMethod !== null
+            ? EventPaymentModuleRegistry::forSlug($this->request->paymentMethod)
+            : null;
+        $paymentOptions = $module?->sanitizeParticipantOptions($this->request->paymentOptions) ?? [];
+
+        if ($module !== null && !$module->participantOptionsComplete($paymentOptions)) {
+            $response->success = false;
+            $response->message = 'Bitte alle erforderlichen Zahlungsangaben ausfüllen.';
+            return $response;
+        }
+
+        // Teilnahmeoptionen (event-spezifische Pflicht-Auswahl) gegen die Event-Definition absichern.
+        $participationOptionRows = $this->buildParticipationOptionRows();
+        if ($participationOptionRows === null) {
+            $response->success = false;
+            $response->message = 'Bitte alle Auswahlfelder ausfüllen.';
+            return $response;
+        }
+
         $eatingHabit = match ($this->request->eating_habit) {
             'vegan' => EatingHabit::EATING_HABIT_VEGAN,
             'vegetarian' => EatingHabit::EATING_HABIT_VEGETARIAN,
@@ -21,6 +42,7 @@ class SignUpCommand {
         };
 
         $participantAge = new Age($this->request->birthday);
+
         $response->participant = $this->request->event->participants()->create(
             [
                 'tenant' => $this->request->event->tenant,
@@ -60,12 +82,95 @@ class SignUpCommand {
                 'notes' => $this->request->notes,
                 'amount' => $this->request->amount,
                 'payment_purpose' => $this->request->event->name . ' - Beitrag ' . $this->request->firstname . ' ' . $this->request->lastname,
+                'payment_method' => $this->request->paymentMethod,
+                'payment_options' => $paymentOptions,
                 'efz_status' => $participantAge->isfullAged() ? EfzStatus::EFZ_STATUS_NOT_CHECKED : EfzStatus::EFZ_STATUS_NOT_REQUIRED,
             ]
         );
 
+        $this->persistParticipationOptions($response->participant, $participationOptionRows);
+        $this->persistAddons($response->participant);
+
         $response->success = true;
         return $response;
     }
 
+    /**
+     * Speichert die gewählten Zusätze (Event-Addons) als Snapshot-Zeilen (Titel/Preis/Betrag) für die spätere
+     * Rechnung. Die Beträge sind bereits in der Controller-Auflösung (`resolveAddons`) berechnet, inkl. USt.
+     */
+    private function persistAddons(\App\Models\EventParticipant $participant): void
+    {
+        foreach ($this->request->addonItems as $item) {
+            $participant->selectedAddons()->create([
+                'tenant' => $this->request->event->tenant,
+                'event_id' => $this->request->event->id,
+                'addon_key' => $item['key'],
+                'title' => $item['title'],
+                'price' => $item['price'] ?? 0,
+                'flat' => (bool)($item['flat'] ?? false),
+                'days' => $item['days'] ?? 0,
+                'amount' => $item['amount'] ?? 0,
+            ]);
+        }
+    }
+
+    /**
+     * Validiert die Antworten gegen die am Event definierten Teilnahmeoptionen und erzeugt die zu speichernden
+     * Zeilen mit Label-Snapshots. Gibt null zurück, wenn eine Pflicht-Frage unbeantwortet oder eine Antwort
+     * ungültig ist (Absicherung gegen manipulierte Payloads).
+     *
+     * @return array<int, array{question_key: string, question_label: string, value: string, value_label: string}>|null
+     */
+    private function buildParticipationOptionRows(): ?array
+    {
+        $rows = [];
+
+        foreach ($this->request->event->participation_options ?? [] as $question) {
+            $key = $question['key'] ?? null;
+            if ($key === null) {
+                continue;
+            }
+
+            $value = $this->request->participationOptions[$key] ?? null;
+            if ($value === null || $value === '') {
+                return null;
+            }
+
+            $option = null;
+            foreach ($question['options'] ?? [] as $candidate) {
+                if (($candidate['value'] ?? null) === $value) {
+                    $option = $candidate;
+                    break;
+                }
+            }
+
+            if ($option === null) {
+                return null;
+            }
+
+            $rows[] = [
+                'question_key' => $key,
+                'question_label' => $question['label'] ?? $key,
+                'value' => $value,
+                'value_label' => $option['label'] ?? $value,
+            ];
+        }
+
+        return $rows;
+    }
+
+    /**
+     * @param array<int, array{question_key: string, question_label: string, value: string, value_label: string}> $rows
+     */
+    private function persistParticipationOptions(\App\Models\EventParticipant $participant, array $rows): void
+    {
+        foreach ($rows as $row) {
+            $participant->selectedOptions()->create(array_merge($row, [
+                'tenant' => $this->request->event->tenant,
+                'event_id' => $this->request->event->id,
+            ]));
+        }
+    }
+
 }

app/Domains/Event/Actions/SignUp/SignUpRequest.php

@@ -2,7 +2,6 @@
 
 namespace App\Domains\Event\Actions\SignUp;
 
-use App\Enumerations\ParticipationType;
 use App\Models\Event;
 use App\Models\Tenant;
 use App\ValueObjects\Amount;
@@ -44,7 +43,13 @@ class SignUpRequest {
         public int $arrival_eating,
         public int $departure_eating,
         public ?string $notes,
-        public Amount $amount
+        public Amount $amount,
+        public ?string $paymentMethod,
+        public array $paymentOptions = [],
+        /** Antworten auf die Teilnahmeoptionen: [ question_key => value ]. */
+        public array $participationOptions = [],
+        /** Aufgelöste Zusätze (Event-Addons): je Eintrag [ key, title, price, flat, days, amount ]. */
+        public array $addonItems = [],
     ) {
     }
 }

app/Domains/Event/Actions/SignUp/SignUpResponse.php

@@ -7,6 +7,7 @@ use App\Models\EventParticipant;
 class SignUpResponse {
     public bool $success;
     public ?EventParticipant $participant;
+    public ?string $message = null;
 
     public function __construct() {
         $this->success = false;

app/Domains/Event/Actions/UpdateEvent/UpdateEventRequest.php

@@ -22,7 +22,8 @@ class UpdateEventRequest {
     public array $contributingLocalGroups;
     public array $eatingHabits;
 
-    public function __construct(Event $event, string $eventName, string $eventLocation, string $postalCode, string $email, DateTime $earlyBirdEnd, DateTime $registrationFinalEnd, int $alcoholicsAge, bool $sendWeeklyReports, bool $registrationAllowed, Amount $flatSupport, Amount $supportPerPerson, array $contributingLocalGroups, array $eatingHabits) {
+    public function __construct(Event $event, string $eventName, string $eventLocation, string $postalCode, string $email, DateTime $earlyBirdEnd, DateTime $registrationFinalEnd, int $alcoholicsAge, bool $sendWeeklyReports, bool $registrationAllowed, Amount $flatSupport, Amount $supportPerPerson, array $contributingLocalGroups, array $eatingHabits)
+    {
         $this->event = $event;
         $this->eventName = $eventName;
         $this->eventLocation = $eventLocation;

app/Domains/Event/Actions/UpdateEvent/UpdateEventResponse.php

@@ -4,9 +4,11 @@ namespace App\Domains\Event\Actions\UpdateEvent;
 
 class UpdateEventResponse {
     public bool $success;
+    public string $message;
 
     public function __construct() {
         $this->success = false;
+        $this->message = '';
     }
 
 }

app/Domains/Event/Actions/UpdateParticipant/UpdateParticipantCommand.php

@@ -42,6 +42,7 @@ class UpdateParticipantCommand {
         $p->departure_date    = DateTime::createFromFormat('Y-m-d', $this->request->departure);
         $p->participation_type = $this->request->participationType;
         $p->eating_habit      = $this->request->eatingHabit;
+        $p->payment_method    = $this->request->paymentMethod;
         $p->allergies         = $this->request->allergies;
         $p->intolerances      = $this->request->intolerances;
         $p->medications       = $this->request->medications;
@@ -71,11 +72,97 @@ class UpdateParticipantCommand {
 
 
         $p->save();
+
+        if ($this->request->participationOptions !== null) {
+            $this->syncParticipationOptions($p);
+        }
+
+        if ($this->request->selectedAddons !== null) {
+            $this->syncAddons($p);
+        }
+
         $this->response->success = true;
         $this->response->participant = $p;
         return $this->response;
     }
 
+    /**
+     * Ersetzt die zugeordneten Zusätze (Event-Addons) anhand der Auswahl. Bewusst **ohne Preis/Betrag**
+     * (amount 0): der Teilnahmebeitrag wird in den Details ohnehin manuell gesetzt. Es wird nur der Titel als
+     * Snapshot gespeichert, damit die Zuordnung sichtbar bleibt.
+     */
+    private function syncAddons(EventParticipant $participant): void
+    {
+        $participant->selectedAddons()->delete();
+
+        $selection = $this->request->selectedAddons ?? [];
+
+        foreach ($participant->event?->addons ?? [] as $addon) {
+            $key = $addon['key'] ?? null;
+            if ($key === null || empty($selection[$key])) {
+                continue;
+            }
+
+            $participant->selectedAddons()->create([
+                'tenant' => $participant->tenant,
+                'event_id' => $participant->event_id,
+                'addon_key' => $key,
+                'title' => $addon['title'] ?? $key,
+                'price' => 0,
+                'flat' => (bool)($addon['flat'] ?? false),
+                'days' => 0,
+                'amount' => 0,
+            ]);
+        }
+    }
+
+    /**
+     * Ersetzt die zugeordneten Teilnahmeoptionen anhand der übergebenen Antworten. Nachträgliche Zuordnung im
+     * Back-Office ist lückenlos möglich: nur gegen die Event-Definition gültige Antworten werden gespeichert,
+     * leere/entfallene Antworten werden abgeräumt. Frage-/Options-Label werden als Snapshot mitgeschrieben.
+     */
+    private function syncParticipationOptions(EventParticipant $participant): void
+    {
+        $participant->selectedOptions()->delete();
+
+        $answers = $this->request->participationOptions ?? [];
+
+        foreach ($participant->event?->participation_options ?? [] as $question) {
+            $key = $question['key'] ?? null;
+            if ($key === null) {
+                continue;
+            }
+
+            $value = $answers[$key] ?? null;
+            if ($value === null || $value === '') {
+                continue;
+            }
+
+            $option = null;
+            foreach ($question['options'] ?? [] as $candidate) {
+                if (($candidate['value'] ?? null) === $value) {
+                    $option = $candidate;
+                    break;
+                }
+            }
+
+            if ($option === null) {
+                continue;
+            }
+
+            $label = trim((string)($question['label'] ?? ''));
+
+            $participant->selectedOptions()->create([
+                'tenant' => $participant->tenant,
+                'event_id' => $participant->event_id,
+                'question_key' => $key,
+                'question_label' => $label !== '' ? $label : ($question['title'] ?? $key),
+                'value' => $value,
+                'value_label' => $option['label'] ?? $value,
+            ]);
+        }
+    }
+
     private function handleAmountChanges(EventParticipant $participant) {
         $this->response->amountPaid = $participant->amount_paid;
         $this->response->amountExpected = $participant->amount;

app/Domains/Event/Actions/UpdateParticipant/UpdateParticipantRequest.php

@@ -25,6 +25,7 @@ class UpdateParticipantRequest {
         public string $departure,
         public string $participationType,
         public string $eatingHabit,
+        public ?string $paymentMethod,
         public ?string $allergies,
         public ?string $intolerances,
         public ?string $medications,
@@ -35,5 +36,9 @@ class UpdateParticipantRequest {
         public string $amountPaid,
         public string $amountExpected,
         public string $cocStatus,
+        /** Antworten auf die Teilnahmeoptionen: [ question_key => value ]. null = unverändert lassen. */
+        public ?array $participationOptions = null,
+        /** Gewählte Zusätze: [ addon_key => bool ]. null = unverändert lassen. */
+        public ?array $selectedAddons = null,
     ) {}
 }

app/Domains/Event/Controllers/CreateController.php

@@ -39,7 +39,6 @@ class CreateController extends CommonController {
         $registrationFinalEnd = DateTime::createFromFormat('Y-m-d', $request->input('eventRegistrationFinalEnd'));
         $participationFeeType = ParticipationFeeType::where('slug', $request->input('eventParticipationFeeType'))->first();
         $payPerDay = $request->input('eventPayPerDay');
-        $payDirect = $request->input('eventPayDirectly');
 
         $billingDeadline = clone $eventEnd;
         $billingDeadline->modify('+6 weeks');
@@ -57,8 +56,7 @@ class CreateController extends CommonController {
             $participationFeeType,
             $request->input('eventAccount'),
             $request->input('eventIban'),
-            $payPerDay,
-            $payDirect
+            $payPerDay
         );
 
         $wasSuccessful = false;

app/Domains/Event/Controllers/DetailsController.php

@@ -2,24 +2,27 @@
 
 namespace App\Domains\Event\Controllers;
 
+use App\Domains\Event\Actions\SetEventAddons\SetEventAddonsCommand;
+use App\Domains\Event\Actions\SetEventAddons\SetEventAddonsRequest;
 use App\Domains\Event\Actions\SetParticipationFees\SetParticipationFeesCommand;
 use App\Domains\Event\Actions\SetParticipationFees\SetParticipationFeesRequest;
+use App\Domains\Event\Actions\SetParticipationOptions\SetParticipationOptionsCommand;
+use App\Domains\Event\Actions\SetParticipationOptions\SetParticipationOptionsRequest;
+use App\Domains\Event\Actions\SetPaymentMethods\SetPaymentMethodsCommand;
+use App\Domains\Event\Actions\SetPaymentMethods\SetPaymentMethodsRequest;
 use App\Domains\Event\Actions\UpdateEvent\UpdateEventCommand;
 use App\Domains\Event\Actions\UpdateEvent\UpdateEventRequest;
 use App\Domains\Event\Actions\UpdateManagers\UpdateManagersCommand;
 use App\Domains\Event\Actions\UpdateManagers\UpdateManagersRequest;
 use App\Enumerations\ParticipationFeeType;
 use App\Enumerations\ParticipationType;
-use App\Models\EventParticipant;
 use App\Providers\InertiaProvider;
 use App\Providers\PdfGenerateAndDownloadProvider;
-use App\Resources\EventResource;
 use App\Scopes\CommonController;
 use App\ValueObjects\Amount;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
-use function Symfony\Component\String\b;
 
 class DetailsController extends CommonController {
     public function __invoke(string $eventId) {
@@ -63,7 +66,21 @@ class DetailsController extends CommonController {
         $eventUpdateCommand = new UpdateEventCommand($eventUpdateRequest);
         $response = $eventUpdateCommand->execute();
 
-        return response()->json(['status' => $response->success ? 'success' : 'error']);
+        return response()->json(['status' => $response->success ? 'success' : 'error', 'message' => $response->message]);
+    }
+
+    public function updatePaymentMethods(int $eventId, Request $request): JsonResponse
+    {
+        $event = $this->events->getById($eventId);
+
+        $paymentMethods = $request->input('paymentMethods', []);
+        $paymentMethodConfigurations = (array)$request->input('paymentMethodConfigurations', []);
+
+        $setPaymentMethodsRequest = new SetPaymentMethodsRequest($event, $paymentMethods, $paymentMethodConfigurations);
+        $setPaymentMethodsCommand = new SetPaymentMethodsCommand($setPaymentMethodsRequest);
+        $response = $setPaymentMethodsCommand->execute();
+
+        return response()->json(['status' => $response->success ? 'success' : 'error', 'message' => $response->message]);
     }
 
     public function updateEventManagers(int $eventId, Request $request) : JsonResponse {
@@ -129,6 +146,28 @@ class DetailsController extends CommonController {
         return response()->json(['status' => $response->success ? 'success' : 'error']);
     }
 
+    public function updateParticipationOptions(int $eventId, Request $request): JsonResponse
+    {
+        $event = $this->events->getById($eventId);
+
+        $setRequest = new SetParticipationOptionsRequest($event, (array)$request->input('questions', []));
+        $setCommand = new SetParticipationOptionsCommand($setRequest);
+        $response = $setCommand->execute();
+
+        return response()->json(['status' => $response->success ? 'success' : 'error', 'message' => $response->message]);
+    }
+
+    public function updateEventAddons(int $eventId, Request $request): JsonResponse
+    {
+        $event = $this->events->getById($eventId);
+
+        $setRequest = new SetEventAddonsRequest($event, (array)$request->input('addons', []));
+        $setCommand = new SetEventAddonsCommand($setRequest);
+        $response = $setCommand->execute();
+
+        return response()->json(['status' => $response->success ? 'success' : 'error', 'message' => $response->message]);
+    }
+
     public function downloadPdfList(string $eventId, string $listType, Request $request): Response
     {
         $event = $this->events->getByIdentifier($eventId);
@@ -182,6 +221,12 @@ class DetailsController extends CommonController {
             case 'by-participation-group':
                 $participants = $this->eventParticipants->groupByParticipationType($event, $request);
                 break;
+            case 'by-participation-option':
+                $participants = $this->eventParticipants->groupByParticipationOption($event, $request);
+                break;
+            case 'by-addon':
+                $participants = $this->eventParticipants->groupByAddon($event, $request);
+                break;
             case 'signed-off':
                 $participants = $this->eventParticipants->getSignedOffParticipants($event, $request);
                 break;

app/Domains/Event/Controllers/MailCompose/ByGroupController.php

@@ -19,6 +19,10 @@ class ByGroupController extends CommonController
                 $participants = $this->eventParticipants->groupByParticipationType($event, $request, $request->input('groupName'));
                 $recipients = $this->eventParticipants->getMailAddresses($participants[$request->input('groupName')]);
                 break;
+            case 'by-participation-option':
+                $participants = $this->eventParticipants->groupByParticipationOption($event, $request, $request->input('groupName'));
+                $recipients = $this->eventParticipants->getMailAddresses($participants[$request->input('groupName')] ?? []);
+                break;
             case 'signed-off':
                 $participants = $this->eventParticipants->getSignedOffParticipants($event, $request, $request->input('groupName'));
                 $recipients = $this->eventParticipants->getMailAddresses($participants[$request->input('groupName')]);

app/Domains/Event/Controllers/ParticipantUpdateController.php

@@ -33,6 +33,7 @@ class ParticipantUpdateController extends CommonController {
             departure: $request->input('departure'),
             participationType: $request->input('participationType'),
             eatingHabit: $request->input('eatingHabit'),
+            paymentMethod: $request->input('paymentMethod'),
             allergies: $request->input('allergies'),
             intolerances: $request->input('intolerances'),
             medications: $request->input('medications'),
@@ -43,6 +44,8 @@ class ParticipantUpdateController extends CommonController {
             amountPaid: $request->input('amountPaid'),
             amountExpected: $request->input('amountExpected'),
             cocStatus: $request->input('cocStatus'),
+            participationOptions: $request->has('participationOptions') ? (array)$request->input('participationOptions') : null,
+            selectedAddons: $request->has('selectedAddons') ? (array)$request->input('selectedAddons') : null,
         );
 
         $command = new UpdateParticipantCommand($updateRequest);

app/Domains/Event/Controllers/SignupController.php

@@ -12,6 +12,7 @@ use App\Providers\DoubleCheckEventRegistrationProvider;
 use App\Providers\InertiaProvider;
 use App\Resources\UserResource;
 use App\Scopes\CommonController;
+use App\ValueObjects\Amount;
 use DateTime;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
@@ -24,7 +25,10 @@ class SignupController extends CommonController {
             $availableEvents[] = $event->toResource()->toArray($request);
         };
 
-        $event = $this->events->getByIdentifier($eventId, false)?->toResource()->toArray($request);
+        $eventModel = $this->events->getByIdentifier($eventId, false);
+        $event = $eventModel?->toResource()->toArray($request);
+        // Die (aktiven) Zahlungsmethoden stehen dem Frontend über $event['paymentMethods'] zur Verfügung;
+        // die Auswahl trifft der/die Teilnehmer\*in im Anmeldeschritt "Zahlungsart".
 
         $participantData = [
             'firstname' => '',
@@ -68,6 +72,11 @@ class SignupController extends CommonController {
 
     public function signUp(int $eventId, Request $request) {
         $event = $this->events->getById($eventId, false);
+
+        if (!$event->registration_allowed || new \DateTime() > $event->start_date) {
+            return response()->json(['status' => 'closed'], 403);
+        }
+
         $eventResource = $event->toResource();
         $registrationData = $request->input('registration_data');
         $siblingReduction = $registrationData['sibling'] === 'true';
@@ -96,6 +105,11 @@ class SignupController extends CommonController {
             $siblingReduction
         );
 
+        // Gewählte Zusätze (Event-Addons) auflösen und auf den Gesamtbetrag aufaddieren.
+        $selectedAddonKeys = array_keys(array_filter((array)$request->input('addons', []), fn($v) => (bool)$v));
+        $addonResolution = $eventResource->resolveAddons($selectedAddonKeys, $arrival, $departure);
+        $amount->addAmount($addonResolution['total']);
+
         $signupRequest = new SignUpRequest(
             $event,
             $registrationData['userId'] ?? null,
@@ -131,12 +145,20 @@ class SignupController extends CommonController {
             $registrationData['anreise_essen'],
             $registrationData['abreise_essen'],
             $registrationData['anmerkungen'],
-            $amount
+            $amount,
+            $registrationData['paymentMethod'] ?? null,
+            (array)($registrationData['paymentOptions'] ?? []),
+            (array)($registrationData['participationOptions'] ?? []),
+            $addonResolution['items'],
         );
 
         $signupCommand = new SignUpCommand($signupRequest);
         $signupResponse = $signupCommand->execute();
 
+        if (!$signupResponse->success) {
+            return response()->json(['status' => 'error', 'message' => $signupResponse->message], 422);
+        }
+
         // 4. Addons registrieren
 
 
@@ -170,14 +192,41 @@ class SignupController extends CommonController {
 
         $siblingReduction = $request->input('sibling') === 'true';
 
-        return response()->json(['amount' =>
-            $event->calculateAmount(
-                $request->input('participationType'),
-                $request->input('beitrag'),
-                \DateTime::createFromFormat('Y-m-d', $request->input('arrival')),
-                \DateTime::createFromFormat('Y-m-d', $request->input('departure')),
-                $siblingReduction
-            )->toString()
+        $arrival = \DateTime::createFromFormat('Y-m-d', $request->input('arrival'));
+        $departure = \DateTime::createFromFormat('Y-m-d', $request->input('departure'));
+
+        $baseFee = $event->calculateAmount(
+            $request->input('participationType'),
+            $request->input('beitrag'),
+            $arrival,
+            $departure,
+            $siblingReduction
+        );
+
+        // Gewählte Zusätze immer einrechnen -- so enthält der finale Anzeigebetrag (und der Bestätigungstext)
+        // stets die Addons und der Zahlungsschritt wird nur bei Gesamt 0 € übersprungen.
+        $selectedAddonKeys = array_keys(array_filter((array)$request->input('addons', []), fn($v) => (bool)$v));
+        $resolution = $event->resolveAddons($selectedAddonKeys, $arrival, $departure);
+
+        // Gesamt = Teilnahmebeitrag + Zusätze; Basisbetrag separat für die Kostenübersicht in der Zusammenfassung.
+        $total = new Amount($baseFee->getAmount(), 'Euro');
+        $total->addAmount($resolution['total']);
+
+        $addonLines = array_map(fn($item) => [
+            'key' => $item['key'],
+            'title' => $item['title'],
+            'amountValue' => $item['amount'],
+            'amount' => new Amount($item['amount'], 'Euro')->toString(),
+            'free' => $item['amount'] <= 0,
+        ], $resolution['items']);
+
+        // amountValue (numerisch) steuert im Frontend das Überspringen des Zahlungsart-Schritts bei 0 €.
+        return response()->json([
+            'amount' => $total->toString(),
+            'amountValue' => $total->getAmount(),
+            'baseAmount' => $baseFee->toString(),
+            'baseAmountValue' => $baseFee->getAmount(),
+            'addons' => $addonLines,
         ]);
     }
 }

app/Domains/Event/Routes/api.php

@@ -45,6 +45,9 @@ Route::prefix('api/v1')
                         Route::post('/event-managers', [DetailsController::class, 'updateEventManagers']);
                         Route::post('/participation-fees', [DetailsController::class, 'updateParticipationFees']);
                         Route::post('/common-settings', [DetailsController::class, 'updateCommonSettings']);
+                        Route::post('/payment-methods', [DetailsController::class, 'updatePaymentMethods']);
+                        Route::post('/participation-options', [DetailsController::class, 'updateParticipationOptions']);
+                        Route::post('/event-addons', [DetailsController::class, 'updateEventAddons']);
                     });
 
 

app/Domains/Event/Views/Create.vue

@@ -31,7 +31,6 @@
         eventRegistrationFinalEnd: '',
         eventAccount: props.eventAccount ? props.eventAccount : '',
         eventIban: props.eventIban ? props.eventIban : '',
-        eventPayDirectly: true,
         eventPayPerDay: props.eventPayPerDay ? props.eventPayPerDay : false,
         eventParticipationFeeType: props.participationFeeType ? props.participationFeeType : 'fixed',
     });
@@ -154,7 +153,6 @@
                 eventRegistrationFinalEnd: formData.eventRegistrationFinalEnd,
                 eventAccount: formData.eventAccount,
                 eventIban: formData.eventIban,
-                eventPayDirectly: formData.eventPayDirectly,
                 eventPayPerDay: formData.eventPayPerDay,
                 eventParticipationFeeType: formData.eventParticipationFeeType,
             }
@@ -262,13 +260,6 @@
                         <ErrorText :message="errors.eventIban" /></td>
                 </tr>
 
-                <tr style="vertical-align: top;">
-                    <td colspan="2" style="font-weight: bold;">
-                        <input type="checkbox" v-model="formData.eventPayDirectly">
-                        Teilnehmende zahlen direkt aufs Veranstaltungskonto
-                    </td>
-                </tr>
-
                 <tr style="vertical-align: top;">
                     <td colspan="2" style="font-weight: bold;">
                         <input type="checkbox" v-model="formData.eventPayPerDay">

app/Domains/Event/Views/Details.vue

@@ -1,9 +1,11 @@
 <script setup>
-import {reactive, inject, onMounted} from 'vue';
+import {onMounted} from 'vue';
 import AppLayout from "../../../../resources/js/layouts/AppLayout.vue";
 import ShadowedBox from "../../../Views/Components/ShadowedBox.vue";
 import TabbedPage from "../../../Views/Components/TabbedPage.vue";
 import ParticipantsList from "./Partials/ParticipantsList.vue";
+import ParticipantsByOption from "./Partials/ParticipantsByOption.vue";
+import ParticipantsByAddon from "./Partials/ParticipantsByAddon.vue";
 import Overview from "./Partials/Overview.vue";
 
 const props = defineProps({
@@ -31,16 +33,21 @@ const tabs = [
         component: ParticipantsList,
         endpoint: "/api/v1/event/details/" + props.event.identifier + '/participants/by-participation-group',
     },
+    {
+        title: 'Teilis nach Teilnahmeoption',
+        component: ParticipantsByOption,
+        endpoint: "/api/v1/event/details/" + props.event.identifier + '/participants/by-participation-option',
+    },
+    {
+        title: 'Teilis mit Zusatzoptionen',
+        component: ParticipantsByAddon,
+        endpoint: "/api/v1/event/details/" + props.event.identifier + '/participants/by-addon',
+    },
     {
         title: 'Abgemeldete Teilis',
         component: ParticipantsList,
         endpoint: "/api/v1/event/details/" + props.event.identifier + '/participants/signed-off',
     },
-    {
-        title: 'Zusätze',
-        component: ParticipantsList,
-        endpoint: "/api/v1/cost-unit/open/archived-cost-units",
-    },
 ]
 
 onMounted(() => {

app/Domains/Event/Views/Partials/CommonSettings.vue

@@ -1,11 +1,11 @@
 <script setup>
-    import {onMounted, reactive, ref} from "vue";
-    import ErrorText from "../../../../Views/Components/ErrorText.vue";
-    import AmountInput from "../../../../Views/Components/AmountInput.vue";
-    import {request} from "../../../../../resources/js/components/HttpClient.js";
-    import {toast} from "vue3-toastify";
+import {onMounted, reactive, ref} from "vue";
+import ErrorText from "../../../../Views/Components/ErrorText.vue";
+import AmountInput from "../../../../Views/Components/AmountInput.vue";
+import {request} from "../../../../../resources/js/components/HttpClient.js";
+import {toast} from "vue3-toastify";
 
-    const emit = defineEmits(['close'])
+const emit = defineEmits(['close'])
 
 
     const props = defineProps({
@@ -15,7 +15,7 @@
 
     const dynmicProps = reactive({
         localGroups: [],
-        eatingHabits:[]
+        eatingHabits:[],
     });
 
     const contributingLocalGroups = ref([])
@@ -75,7 +75,7 @@
             toast.success('Einstellungen wurden erfolgreich gespeichert.')
             emit('close')
         } else {
-            toast.error('Beim Speichern ist ein Fehler aufgetreten.')
+            toast.error(response.message ?? 'Beim Speichern ist ein Fehler aufgetreten.')
         }
     }
 

app/Domains/Event/Views/Partials/EventAddons.vue

@@ -0,0 +1,166 @@
+<script setup>
+import {ref} from "vue";
+import {toast} from "vue3-toastify";
+import {request} from "../../../../../resources/js/components/HttpClient.js";
+import AmountInput from "../../../../Views/Components/AmountInput.vue";
+
+const emit = defineEmits(['close'])
+
+const props = defineProps({
+    event: Object,
+})
+
+// Addon-Definition dieses Events: [ { key, title, description, price, flat } ].
+// key bleibt für bestehende Einträge erhalten (Bestandsschutz für bereits gebuchte Zusätze).
+const addons = ref((props.event.addons ?? []).map(a => ({
+    key: a.key ?? '',
+    title: a.title ?? '',
+    description: a.description ?? '',
+    price: a.price != null ? String(a.price).replace('.', ',') : '0',
+    flat: a.flat ?? false,
+})))
+
+function addAddon() {
+    addons.value.push({key: '', title: '', description: '', price: '0', flat: true})
+}
+
+function removeAddon(index) {
+    addons.value.splice(index, 1)
+}
+
+function validate() {
+    for (const addon of addons.value) {
+        if (addon.title.trim() === '') {
+            toast.error('Bitte für jeden Zusatz einen Titel angeben.')
+            return false
+        }
+    }
+
+    return true
+}
+
+async function save() {
+    if (!validate()) {
+        return
+    }
+
+    const response = await request('/api/v1/event/details/' + props.event.id + '/event-addons', {
+        method: 'POST',
+        body: {
+            addons: addons.value,
+        }
+    })
+
+    if (response.status !== 'success') {
+        toast.error(response.message ?? 'Die Zusatzoptionen konnten nicht gespeichert werden.')
+        return
+    }
+
+    toast.success('Die Zusatzoptionen wurden gespeichert')
+    emit('close')
+}
+</script>
+
+<template>
+    <div class="event-addons">
+        <h3>Zusatzoptionen</h3>
+        <p style="color: #6b7280; font-size: 0.9rem;">
+            Buchbare Zusätze zur Veranstaltung (z. B. Parkticket, Aufnäher). Jede Position ist eine Ja/Nein-Auswahl.
+            Preis 0 wird dem Teilnehmenden als „Kostenfrei" angezeigt. Ist „Pauschale" nicht gesetzt, wird der Preis
+            mit der Anzahl der Teilnahmetage multipliziert. Ohne Zusätze wird dieser Schritt in der Anmeldung
+            übersprungen.
+        </p>
+
+        <div v-for="(addon, index) in addons" :key="index" class="addon-card">
+            <div class="addon-head">
+                <div class="addon-fields">
+                    <label class="field-label">Titel</label>
+                    <input type="text" v-model="addon.title" class="width-full" placeholder="z. B. „Parkticket“"/>
+
+                    <label class="field-label">Beschreibung (optional)</label>
+                    <input type="text" v-model="addon.description" class="width-full" placeholder="Kurze Erläuterung"/>
+
+                    <div class="addon-price-row">
+                        <span>
+                            <label class="field-label">Preis</label>
+                            <AmountInput v-model="addon.price" class="width-small"/> Euro
+                        </span>
+                        <label class="flat-label">
+                            <input type="checkbox" v-model="addon.flat"/>
+                            Pauschale (nicht pro Tag)
+                        </label>
+                    </div>
+                </div>
+                <label class="link remove-link" @click="removeAddon(index)">Entfernen</label>
+            </div>
+        </div>
+
+        <div style="margin-top: 16px;">
+            <label class="link" @click="addAddon">+ Zusatz hinzufügen</label>
+        </div>
+
+        <div style="margin-top: 24px;">
+            <input type="button" value="Speichern" @click="save"/>
+        </div>
+    </div>
+</template>
+
+<style scoped>
+.addon-card {
+    margin-top: 16px;
+    padding: 14px;
+    background: #f8fafc;
+    border: 1px solid #e5e7eb;
+    border-radius: 10px;
+}
+
+.addon-head {
+    display: flex;
+    align-items: flex-start;
+    gap: 12px;
+}
+
+.addon-fields {
+    flex: 1;
+}
+
+.field-label {
+    display: block;
+    font-size: 0.78rem;
+    color: #6b7280;
+    margin: 6px 0 2px;
+}
+
+.addon-fields .field-label:first-child {
+    margin-top: 0;
+}
+
+.addon-price-row {
+    display: flex;
+    align-items: flex-end;
+    gap: 24px;
+    margin-top: 6px;
+}
+
+.flat-label {
+    display: flex;
+    align-items: center;
+    gap: 6px;
+    font-size: 0.9rem;
+    color: #374151;
+}
+
+.width-full {
+    width: 100%;
+}
+
+.width-small {
+    width: 90px;
+}
+
+.remove-link {
+    white-space: nowrap;
+    color: #ef4444;
+    font-size: 0.85rem;
+}
+</style>

app/Domains/Event/Views/Partials/Overview.vue

@@ -1,15 +1,17 @@
 <script setup>
-    import {onMounted, reactive, ref} from "vue";
-    import ParticipationFees from "./ParticipationFees.vue";
-    import ParticipationSummary from "./ParticipationSummary.vue";
-    import CommonSettings from "./CommonSettings.vue";
-    import EventManagement from "./EventManagement.vue";
-    import Modal from "../../../../Views/Components/Modal.vue";
-    import MailCompose from "./MailCompose.vue";
-    import FullScreenModal from "../../../../Views/Components/FullScreenModal.vue";
-    import {toast} from "vue3-toastify";
+import {onMounted, reactive, ref} from "vue";
+import ParticipationFees from "./ParticipationFees.vue";
+import ParticipationOptions from "./ParticipationOptions.vue";
+import EventAddons from "./EventAddons.vue";
+import ParticipationSummary from "./ParticipationSummary.vue";
+import CommonSettings from "./CommonSettings.vue";
+import EventManagement from "./EventManagement.vue";
+import Modal from "../../../../Views/Components/Modal.vue";
+import MailCompose from "./MailCompose.vue";
+import FullScreenModal from "../../../../Views/Components/FullScreenModal.vue";
+import {toast} from "vue3-toastify";
 
-    const props = defineProps({
+const props = defineProps({
         data: Object,
     })
 
@@ -36,6 +38,14 @@
         displayData.value = 'participationFees';
     }
 
+    async function showParticipationOptions() {
+        displayData.value = 'participationOptions';
+    }
+
+async function showEventAddons() {
+    displayData.value = 'eventAddons';
+}
+
     async function showEventManagement() {
         displayData.value = 'eventManagement';
     }
@@ -107,6 +117,9 @@
 
 
     <ParticipationFees v-if="displayData === 'participationFees'" :event="dynamicProps.event"  @close="showMain" />
+    <ParticipationOptions v-else-if="displayData === 'participationOptions'" :event="dynamicProps.event"
+                          @close="showMain"/>
+    <EventAddons v-else-if="displayData === 'eventAddons'" :event="dynamicProps.event" @close="showMain"/>
     <CommonSettings v-else-if="displayData === 'commonSettings'" :event="dynamicProps.event"  @close="showMain" />
     <EventManagement v-else-if="displayData === 'eventManagement'" :event="dynamicProps.event"  @close="showMain" />
 
@@ -185,7 +198,10 @@
         <div class="event-flexbox-row bottom">
             <label style="font-size: 9pt;" class="link" @click="showCommonSettings">Allgemeine Einstellungen</label> &nbsp;
             <label style="font-size: 9pt;" class="link" @click="showEventManagement">Veranstaltungsleitung</label> &nbsp;
-            <label style="font-size: 9pt;" class="link" @click="showParticipationFees">Teilnahmegebühren</label>
+            <label style="font-size: 9pt;" class="link" @click="showParticipationFees">Teilnahmegebühren</label> &nbsp;
+            <label style="font-size: 9pt;" class="link" @click="showParticipationOptions">Teilnahmeoptionen</label>
+            &nbsp;
+            <label style="font-size: 9pt;" class="link" @click="showEventAddons">Zusatzoptionen</label>
             <a style="font-size: 9pt;" class="link" :href="'/budget/' + props.data.event.costUnit.id">Budget bearbeiten</a>
             <a style="font-size: 9pt;" class="link" :href="'/cost-unit/' + props.data.event.costUnit.id">Ausgabenübersicht</a>
             <a v-if="!dynamicProps.event.registrationAllowed && !dynamicProps.event.archived" style="color: #ff0000; font-size: 9pt;" class="link" @click="archiveEvent">Archivieren</a>

app/Domains/Event/Views/Partials/ParticipantData.vue

@@ -1,5 +1,5 @@
 <script setup>
-import {onMounted, reactive, watch} from "vue";
+import {computed, onMounted, reactive, watch} from "vue";
 import AmountInput from "../../../../Views/Components/AmountInput.vue";
 import DialableTelephoneNumber from "../../../../Views/Components/DialableTelephoneNumber.vue";
 
@@ -49,6 +49,7 @@ const form = reactive({
     departure: '',
     participationType: '',
     eatingHabit: '',
+    paymentMethod: '',
     allergies: '',
     intolerances: '',
     medications: '',
@@ -59,8 +60,27 @@ const form = reactive({
     amountPaid: '',
     amountExpected: '',
     cocStatus: '',
+    participationOptions: {},
+    selectedAddons: {},
 });
 
+// Teilnahmeoptionen des Events (Definition mit Titel/Frage/Optionen).
+const participationQuestions = computed(() => staticProps.event?.participationOptions ?? []);
+
+// Zusatzoptionen (Event-Addons) des Events.
+const eventAddons = computed(() => staticProps.event?.addons ?? []);
+
+// Gewählte Antwort (Options-Label) eines Teilnehmers zu einer Frage – für die Ansicht „Titel: Antwort".
+function answerLabelFor(questionKey) {
+    const answer = (props.participant?.participationOptions ?? []).find(o => o.questionKey === questionKey);
+    return answer?.valueLabel ?? '—';
+}
+
+// Hat der Teilnehmer diesen Zusatz gebucht? – für die Ansicht.
+function isAddonSelected(addonKey) {
+    return (props.participant?.selectedAddons ?? []).some(a => a.addonKey === addonKey);
+}
+
 watch(
     () => props.participant,
     (participant) => {
@@ -82,6 +102,7 @@ watch(
         form.departure = participant?.departureDate ?? '';
         form.participationType = participant?.participation_type ?? '';
         form.eatingHabit = participant?.eating_habit ?? '';
+        form.paymentMethod = participant?.payment_method ?? '';
         form.allergies = participant?.allergies ?? '';
         form.intolerances = participant?.intolerances ?? '';
         form.medications = participant?.medications ?? '';
@@ -92,6 +113,12 @@ watch(
         form.amountPaid = participant?.amountPaid.short ?? '';
         form.amountExpected = participant?.amountExpected.short ?? '';
         form.cocStatus = participant?.efz_status ?? '';
+        form.participationOptions = Object.fromEntries(
+            (participant?.participationOptions ?? []).map(o => [o.questionKey, o.value])
+        );
+        form.selectedAddons = Object.fromEntries(
+            (participant?.selectedAddons ?? []).map(a => [a.addonKey, true])
+        );
     },
     { immediate: true }
 );
@@ -206,7 +233,7 @@ function saveParticipant() {
                     <tr>
                         <th>Telefon</th>
                         <td>
-                            <DialableTelephoneNumber v-if="!staticProps.editMode" :number="props.participant.phone_1"</DialableTelephoneNumber>
+                            <DialableTelephoneNumber v-if="!staticProps.editMode" :number="props.participant.phone_1" />
                             <input v-else v-model="form.phone_1" type="text" />
                         </td>
                     </tr>
@@ -230,7 +257,7 @@ function saveParticipant() {
                     <tr>
                         <th>Ansprechperson Telefon</th>
                         <td>
-                            <DialableTelephoneNumber v-if="!staticProps.editMode" :number="props.participant.phone_2"</DialableTelephoneNumber>
+                            <DialableTelephoneNumber v-if="!staticProps.editMode" :number="props.participant.phone_2" />
                             <input v-else v-model="form.phone_2" type="text" />
                         </td>
                     </tr>
@@ -284,6 +311,20 @@ function saveParticipant() {
                             </select>
                         </td>
                     </tr>
+                    <tr>
+                        <th>Zahlungsmethode</th>
+                        <td>
+                            <span v-if="!staticProps.editMode">{{ props.participant.paymentMethod }}</span>
+                            <select v-else v-model="form.paymentMethod">
+                                <option
+                                    v-for="paymentMethod in staticProps.event.paymentMethods"
+                                    :value="paymentMethod.slug"
+                                >
+                                    {{ paymentMethod.name }}
+                                </option>
+                            </select>
+                        </td>
+                    </tr>
                     <tr>
                         <th>eFZ-Status</th>
                         <td>
@@ -372,6 +413,43 @@ function saveParticipant() {
                 </table>
             </div>
         </div>
+
+        <div class="participationData" v-if="participationQuestions.length > 0 || eventAddons.length > 0">
+            <div>
+                <template v-if="participationQuestions.length > 0">
+                    <h3>Teilnahmeoptionen</h3>
+                    <table>
+                        <tr v-for="question in participationQuestions" :key="question.key">
+                            <th>{{ question.title || question.label }}</th>
+                            <td>
+                                <span v-if="!staticProps.editMode">{{ answerLabelFor(question.key) }}</span>
+                                <select v-else v-model="form.participationOptions[question.key]">
+                                    <option value="">— keine —</option>
+                                    <option v-for="option in question.options" :key="option.value"
+                                            :value="option.value">
+                                        {{ option.label }}
+                                    </option>
+                                </select>
+                            </td>
+                        </tr>
+                    </table>
+                </template>
+            </div>
+            <div>
+                <template v-if="eventAddons.length > 0">
+                    <h3>Zusatzoptionen</h3>
+                    <table>
+                        <tr v-for="addon in eventAddons" :key="addon.key">
+                            <th>{{ addon.title }}</th>
+                            <td>
+                                <span v-if="!staticProps.editMode">{{ isAddonSelected(addon.key) ? 'Ja' : '—' }}</span>
+                                <input v-else type="checkbox" v-model="form.selectedAddons[addon.key]"/>
+                            </td>
+                        </tr>
+                    </table>
+                </template>
+            </div>
+        </div>
     </div>
 
     <button v-if="!staticProps.editMode" class="button" @click="enableEditMode">Bearbeiten</button>
@@ -391,6 +469,10 @@ function saveParticipant() {
     gap: 20px;
 }
 
+.participationData table tr th {
+    width: 200px;
+}
+
 .participationData div {
     flex: 1;
     vertical-align: top;

app/Domains/Event/Views/Partials/ParticipantsByAddon.vue

@@ -0,0 +1,67 @@
+<script setup>
+import {computed, inject} from "vue";
+import ParticipantsList from "./ParticipantsList.vue";
+
+const props = defineProps({
+    data: {
+        type: Object,
+        default: () => ({participants: {}, event: {}, listType: ''}),
+    },
+});
+
+// Von TabbedPage bereitgestellt: erlaubt den Sprung zum Übersicht-Tab (Index 0), wo die
+// Zusatzoptionen konfiguriert werden.
+const selectTab = inject('selectTab', null);
+
+const hasAddons = computed(() => (props.data?.event?.addons?.length ?? 0) > 0);
+
+function goToOverview() {
+    if (selectTab) {
+        selectTab(0);
+    }
+}
+</script>
+
+<template>
+    <ParticipantsList v-if="hasAddons" :data="data" :show-group-mail="false"/>
+
+    <div v-else class="no-addons">
+        <h3>Keine Zusatzoptionen angelegt</h3>
+        <p>
+            Für diese Veranstaltung sind noch keine Zusatzoptionen angelegt. Sobald du unter
+            <strong>Übersicht → Zusatzoptionen</strong> Zusätze definierst, werden die Teilnehmenden hier nach
+            ihren gebuchten Zusätzen gruppiert.
+        </p>
+        <button v-if="selectTab" type="button" class="button" @click="goToOverview">
+            Zu den Zusatzoptionen
+        </button>
+    </div>
+</template>
+
+<style scoped>
+.no-addons {
+    max-width: 640px;
+    margin: 20px auto;
+    padding: 24px;
+    background: #f8fafc;
+    border: 1px solid #e5e7eb;
+    border-radius: 10px;
+    text-align: center;
+}
+
+.no-addons p {
+    color: #4b5563;
+    line-height: 1.6;
+}
+
+.button {
+    margin-top: 12px;
+    padding: 8px 18px;
+    background: #2563eb;
+    color: #fff;
+    border: none;
+    border-radius: 8px;
+    font-weight: 600;
+    cursor: pointer;
+}
+</style>

app/Domains/Event/Views/Partials/ParticipantsByOption.vue

@@ -0,0 +1,67 @@
+<script setup>
+import {computed, inject} from "vue";
+import ParticipantsList from "./ParticipantsList.vue";
+
+const props = defineProps({
+    data: {
+        type: Object,
+        default: () => ({participants: {}, event: {}, listType: ''}),
+    },
+});
+
+// Von TabbedPage bereitgestellt: erlaubt den Sprung zum Übersicht-Tab (Index 0), wo die
+// Teilnahmeoptionen konfiguriert werden.
+const selectTab = inject('selectTab', null);
+
+const hasOptions = computed(() => (props.data?.event?.participationOptions?.length ?? 0) > 0);
+
+function goToOverview() {
+    if (selectTab) {
+        selectTab(0);
+    }
+}
+</script>
+
+<template>
+    <ParticipantsList v-if="hasOptions" :data="data" :show-group-mail="false"/>
+
+    <div v-else class="no-options">
+        <h3>Keine Teilnahmeoptionen angelegt</h3>
+        <p>
+            Für diese Veranstaltung sind noch keine Teilnahmeoptionen angelegt. Sobald du unter
+            <strong>Übersicht → Teilnahmeoptionen</strong> Fragen definierst, werden die Teilnehmenden hier nach
+            ihrer Auswahl gruppiert.
+        </p>
+        <button v-if="selectTab" type="button" class="button" @click="goToOverview">
+            Zu den Teilnahmeoptionen
+        </button>
+    </div>
+</template>
+
+<style scoped>
+.no-options {
+    max-width: 640px;
+    margin: 20px auto;
+    padding: 24px;
+    background: #f8fafc;
+    border: 1px solid #e5e7eb;
+    border-radius: 10px;
+    text-align: center;
+}
+
+.no-options p {
+    color: #4b5563;
+    line-height: 1.6;
+}
+
+.button {
+    margin-top: 12px;
+    padding: 8px 18px;
+    background: #2563eb;
+    color: #fff;
+    border: none;
+    border-radius: 8px;
+    font-weight: 600;
+    cursor: pointer;
+}
+</style>

app/Domains/Event/Views/Partials/ParticipantsList.vue

@@ -1,11 +1,11 @@
 <script setup>
-import { computed, reactive, ref } from "vue";
+import {computed, reactive, ref} from "vue";
 import Modal from "../../../../Views/Components/Modal.vue";
 import ParticipantData from "./ParticipantData.vue";
-import MailCompose   from "./MailCompose.vue";
+import MailCompose from "./MailCompose.vue";
 import {toast} from "vue3-toastify";
 import {useAjax} from "../../../../../resources/js/components/ajaxHandler.js";
-import {format, getDay, getMonth, getYear} from "date-fns";
+import {format} from "date-fns";
 import AmountInput from "../../../../Views/Components/AmountInput.vue";
 import FullScreenModal from "../../../../Views/Components/FullScreenModal.vue";
 import DialableTelephoneNumber from "../../../../Views/Components/DialableTelephoneNumber.vue";
@@ -20,6 +20,11 @@ const props = defineProps({
             listType: '',
         }),
     },
+    // Steuert, ob je Gruppe der „E-Mail an Gruppe senden"-Button angezeigt wird.
+    showGroupMail: {
+        type: Boolean,
+        default: true,
+    },
 });
 
 const today = format(new Date(), "yyyy-MM-dd");
@@ -344,6 +349,14 @@ function mailToGroup(groupKey) {
                                 <span class="link" style="font-size:10pt;" @click="paymentComplete(participant)">Zahlung buchen</span> &nbsp;
                                 <span class="link" style="font-size:10pt;" @click="openPartialPaymentDialog(participant)">Teilzahlung buchen</span>
                             </span>
+                            <br/><br/>
+                            <span :id="'participant-' + participant.identifier + '-paymentmethod'"
+                                  style="font-size:10pt;">
+                                Zahlungsweise: <label
+                                :id="'participant-' + participant.identifier + '-paymentmethod-name'">{{
+                                    participant.paymentMethod ?? '—'
+                                }}</label>
+                            </span>
                         </td>
 
                         <td class="pl-email">
@@ -396,7 +409,8 @@ function mailToGroup(groupKey) {
                         27 Jahre und älter: <strong>{{ getAgeCounts(participants)['27+'] ?? 0 }}</strong>
                     </td>
                     <td class="pl-summary-action">
-                        <input type="button" class="button" @click="mailToGroup(groupKey)" value="E-Mail an Gruppe senden" />
+                        <input v-if="showGroupMail" type="button" class="button" @click="mailToGroup(groupKey)"
+                               value="E-Mail an Gruppe senden"/>
                     </td>
                 </tr>
                 </tbody>

app/Domains/Event/Views/Partials/ParticipationFees.vue

@@ -1,16 +1,59 @@
 <script setup>
-    import {reactive, watch} from "vue";
-    import AmountInput from "../../../../Views/Components/AmountInput.vue";
-    import ErrorText from "../../../../Views/Components/ErrorText.vue";
-    import {toast} from "vue3-toastify";
-    import {request} from "../../../../../resources/js/components/HttpClient.js";
+import {onMounted, reactive, ref} from "vue";
+import AmountInput from "../../../../Views/Components/AmountInput.vue";
+import ErrorText from "../../../../Views/Components/ErrorText.vue";
+import TextEditor from "../../../../Views/Components/TextEditor.vue";
+import Modal from "../../../../Views/Components/Modal.vue";
+import RichSelectBox from "../../../../Views/Components/RichSelectBox.vue";
+import {PAYMENT_METHOD_ICONS} from "../../../../../resources/js/constants/paymentMethodIcons.js";
+import {toast} from "vue3-toastify";
+import {request} from "../../../../../resources/js/components/HttpClient.js";
 
-    const emit = defineEmits(['close'])
+const emit = defineEmits(['close'])
 
     const props = defineProps({
         event: Object,
     })
 
+// Verfügbare (aktive) Zahlungsarten des Tenants inkl. optionsSchema + Default-Config.
+const availablePaymentMethods = ref([])
+// Auswahl der Zahlungsart-Slugs für dieses Event (Default: leer bei neuen Events).
+const paymentMethods = ref([])
+// pro-Event-Config je Zahlungsmethode: { slug: { option: value } }
+const paymentMethodConfigurations = reactive({})
+
+// Optionen-Modal
+const showOptionsModal = ref(false)
+const optionsMethod = ref(null)
+
+function openOptions(method) {
+    optionsMethod.value = method
+    showOptionsModal.value = true
+}
+
+onMounted(async () => {
+    const response = await fetch('/api/v1/core/retrieve-event-setting-data');
+    const data = await response.json();
+    availablePaymentMethods.value = data.paymentMethods ?? []
+
+    paymentMethods.value = props.event.paymentMethods?.map(t => t.slug) ?? []
+
+    // Pro-Event-Config vorbelegen: bereits gespeicherte Pivot-Config des Events hat Vorrang,
+    // sonst der Tenant-Standard (Snapshot-Quelle für neu zugewiesene Methoden).
+    const eventConfigBySlug = {}
+    for (const pm of props.event.paymentMethods ?? []) {
+        eventConfigBySlug[pm.slug] = pm.configuration ?? {}
+    }
+    for (const method of availablePaymentMethods.value) {
+        const source = eventConfigBySlug[method.slug] ?? method.configuration ?? {}
+        const config = {}
+        for (const option of method.optionsSchema ?? []) {
+            config[option.name] = source[option.name] ?? ''
+        }
+        paymentMethodConfigurations[method.slug] = config
+    }
+})
+
     const errors = reactive({})
     const formData = reactive({
         "pft_1_active": true,
@@ -75,6 +118,24 @@
             return;
         }
 
+        if (paymentMethods.value.length === 0) {
+            toast.error('Mindestens eine Zahlungsmöglichkeit muss ausgewählt sein.')
+            return;
+        }
+
+        const paymentResponse = await request('/api/v1/event/details/' + props.event.id + '/payment-methods', {
+            method: "POST",
+            body: {
+                paymentMethods: paymentMethods.value,
+                paymentMethodConfigurations: paymentMethodConfigurations,
+            }
+        })
+
+        if (paymentResponse.status !== 'success') {
+            toast.error(paymentResponse.message ?? 'Die Zahlungsmöglichkeiten konnten nicht gespeichert werden.')
+            return;
+        }
+
         const data = await request('/api/v1/event/details/' + props.event.id + '/participation-fees', {
             method: "POST",
             body: {
@@ -286,10 +347,81 @@
             </td>
         </tr>
 
+        <tr>
+            <td colspan="4" style="padding-top: 30px;">
+                <h4>Zahlungsmöglichkeiten</h4>
+                <div v-for="paymentMethod in availablePaymentMethods" :key="paymentMethod.slug"
+                     class="payment-method-row">
+                    <input type="checkbox" :id="'paymentmethod' + paymentMethod.id" :value="paymentMethod.slug"
+                           v-model="paymentMethods"/>
+                    <label style="padding-left: 5px;" :for="'paymentmethod' + paymentMethod.id">{{
+                            paymentMethod.name
+                        }}</label>
+                    <label
+                        v-if="paymentMethods.includes(paymentMethod.slug) && (paymentMethod.optionsSchema?.length ?? 0) > 0"
+                        class="link"
+                        style="padding-left: 15px; font-size: 10pt;"
+                        @click="openOptions(paymentMethod)"
+                    >Optionen</label>
+                </div>
+            </td>
+        </tr>
+
         <tr>
             <td colspan="4" style="padding-top: 20px;">
                 <input type="button" value="Speichern" @click="saveParticipationFees" />
             </td>
         </tr>
     </table>
+
+    <Modal
+        v-if="showOptionsModal"
+        :show="showOptionsModal"
+        :title="'Optionen: ' + (optionsMethod?.name ?? '')"
+        width="700px"
+        @close="showOptionsModal = false"
+    >
+        <div v-for="option in optionsMethod?.optionsSchema ?? []" :key="option.name" class="payment-method-config-row">
+            <label>{{ option.label }}<span v-if="option.required" class="required-marker">*</span></label>
+            <RichSelectBox v-if="option.type === 'icon'"
+                           v-model="paymentMethodConfigurations[optionsMethod.slug][option.name]"
+                           :options="PAYMENT_METHOD_ICONS"
+                           placeholder="Symbol wählen…"/>
+            <TextEditor v-else-if="option.type === 'richtext'"
+                        v-model="paymentMethodConfigurations[optionsMethod.slug][option.name]"/>
+            <input v-else type="text"
+                   v-model="paymentMethodConfigurations[optionsMethod.slug][option.name]"
+                   class="width-full"/>
+            <span v-if="option.hint" class="option-hint">{{ option.hint }}</span>
+        </div>
+    </Modal>
 </template>
+
+<style scoped>
+.payment-method-row {
+    margin-bottom: 6px;
+}
+
+.payment-method-config-row {
+    margin-bottom: 12px;
+}
+
+.payment-method-config-row label {
+    display: block;
+    font-size: 0.85rem;
+    color: #374151;
+    margin-bottom: 2px;
+}
+
+.required-marker {
+    color: #ef4444;
+    margin-left: 2px;
+}
+
+.option-hint {
+    display: block;
+    margin-top: 4px;
+    font-size: 0.8rem;
+    color: #6b7280;
+}
+</style>

app/Domains/Event/Views/Partials/ParticipationOptions.vue

@@ -0,0 +1,182 @@
+<script setup>
+import {ref} from "vue";
+import {toast} from "vue3-toastify";
+import {request} from "../../../../../resources/js/components/HttpClient.js";
+
+const emit = defineEmits(['close'])
+
+const props = defineProps({
+    event: Object,
+})
+
+// Fragen-Definition dieses Events: [ { key, label, options: [ { value, label } ] } ].
+// key/value bleiben für bestehende Einträge erhalten (Bestandsschutz für bereits gespeicherte Antworten);
+// neue Einträge bekommen serverseitig beim Speichern einen stabilen Slug.
+const questions = ref((props.event.participationOptions ?? []).map(q => ({
+    key: q.key ?? '',
+    title: q.title ?? '',
+    label: q.label ?? '',
+    options: (q.options ?? []).map(o => ({value: o.value ?? '', label: o.label ?? ''})),
+})))
+
+function addQuestion() {
+    questions.value.push({key: '', title: '', label: '', options: [{value: '', label: ''}, {value: '', label: ''}]})
+}
+
+function removeQuestion(index) {
+    questions.value.splice(index, 1)
+}
+
+function addOption(question) {
+    question.options.push({value: '', label: ''})
+}
+
+function removeOption(question, index) {
+    question.options.splice(index, 1)
+}
+
+function validate() {
+    for (const question of questions.value) {
+        if (question.title.trim() === '') {
+            toast.error('Bitte für jede Frage einen Titel angeben.')
+            return false
+        }
+
+        const validOptions = question.options.filter(o => o.label.trim() !== '')
+        if (validOptions.length < 1) {
+            toast.error('Jede Frage braucht mindestens eine Auswahlmöglichkeit.')
+            return false
+        }
+    }
+
+    return true
+}
+
+async function save() {
+    if (!validate()) {
+        return
+    }
+
+    const response = await request('/api/v1/event/details/' + props.event.id + '/participation-options', {
+        method: 'POST',
+        body: {
+            questions: questions.value,
+        }
+    })
+
+    if (response.status !== 'success') {
+        toast.error(response.message ?? 'Die Teilnahmeoptionen konnten nicht gespeichert werden.')
+        return
+    }
+
+    toast.success('Die Teilnahmeoptionen wurden gespeichert')
+    emit('close')
+}
+</script>
+
+<template>
+    <div class="participation-options">
+        <h3>Teilnahmeoptionen</h3>
+        <p style="color: #6b7280; font-size: 0.9rem;">
+            Pflicht-Auswahlfragen für die Anmeldung (z. B. Kurs oder Stufe). Je Frage ist genau eine Option wählbar.
+            Ohne Fragen wird dieser Schritt in der Anmeldung übersprungen.
+        </p>
+
+        <div v-for="(question, qIndex) in questions" :key="qIndex" class="question-card">
+            <div class="question-head">
+                <div class="question-fields">
+                    <label class="field-label">Titel (Überschrift / Feldbeschriftung)</label>
+                    <input
+                        type="text"
+                        v-model="question.title"
+                        class="width-full"
+                        placeholder="Titel, z. B. „Kurs“"
+                    />
+
+                    <label class="field-label">Frage / Erklärtext (optional)</label>
+                    <input
+                        type="text"
+                        v-model="question.label"
+                        class="width-full"
+                        placeholder="z. B. „Welchen Kurs möchtest du belegen?“"
+                    />
+                </div>
+                <label class="link remove-link" @click="removeQuestion(qIndex)">Frage entfernen</label>
+            </div>
+
+            <div class="options">
+                <div v-for="(option, oIndex) in question.options" :key="oIndex" class="option-row">
+                    <input
+                        type="text"
+                        v-model="option.label"
+                        class="width-full"
+                        placeholder="Auswahlmöglichkeit"
+                    />
+                    <label class="link remove-link" @click="removeOption(question, oIndex)">✕</label>
+                </div>
+                <label class="link" @click="addOption(question)">+ Option hinzufügen</label>
+            </div>
+        </div>
+
+        <div style="margin-top: 16px;">
+            <label class="link" @click="addQuestion">+ Frage hinzufügen</label>
+        </div>
+
+        <div style="margin-top: 24px;">
+            <input type="button" value="Speichern" @click="save"/>
+        </div>
+    </div>
+</template>
+
+<style scoped>
+.question-card {
+    margin-top: 16px;
+    padding: 14px;
+    background: #f8fafc;
+    border: 1px solid #e5e7eb;
+    border-radius: 10px;
+}
+
+.question-head {
+    display: flex;
+    align-items: flex-start;
+    gap: 12px;
+}
+
+.question-fields {
+    flex: 1;
+}
+
+.field-label {
+    display: block;
+    font-size: 0.78rem;
+    color: #6b7280;
+    margin: 6px 0 2px;
+}
+
+.question-fields .field-label:first-child {
+    margin-top: 0;
+}
+
+.options {
+    margin-top: 12px;
+    padding-left: 12px;
+}
+
+.option-row {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    margin-bottom: 8px;
+}
+
+.width-full {
+    width: 100%;
+}
+
+.remove-link {
+    white-space: nowrap;
+    color: #ef4444;
+    font-size: 0.85rem;
+}
+</style>

app/Domains/Event/Views/Partials/SignUpForm/SignupForm.vue

@@ -1,13 +1,15 @@
 <script setup>
-import { useSignupForm } from './composables/useSignupForm.js'
+import {useSignupForm} from './composables/useSignupForm.js'
 import StepAge from './steps/StepAge.vue'
 import StepContactPerson from './steps/StepContactPerson.vue'
 import StepPersonalData from './steps/StepPersonalData.vue'
 import StepRegistrationMode from './steps/StepRegistrationMode.vue'
 import StepArrival from './steps/StepArrival.vue'
 import StepAddons from './steps/StepAddons.vue'
+import StepParticipationOptions from './steps/StepParticipationOptions.vue'
 import StepPhotoPermissions from './steps/StepPhotoPermissions.vue'
 import StepAllergies from './steps/StepAllergies.vue'
+import StepPaymentMethod from './steps/StepPaymentMethod.vue'
 import StepSummary from './steps/StepSummary.vue'
 import SubmitSuccess from './after-submit/SubmitSuccess.vue'
 import SubmitAlreadyExists from './after-submit/SubmitAlreadyExists.vue'
@@ -22,7 +24,8 @@ const emit = defineEmits(['registrationDone'])
 
 const {
     currentStep, goToStep, formData, selectedAddons,
-    submit, submitting, submitResult, summaryLoading, summaryAmount
+    submit, submitting, submitResult, summaryLoading, summaryAmount, summaryAmountValue,
+    summaryBaseAmount, summaryAddonLines
 } = useSignupForm(props.event, props.participantData)
 
 const steps = [
@@ -32,9 +35,11 @@ const steps = [
     { step: 4, label: 'An-/Abreise' },
     { step: 5, label: 'Teilnahmegruppe' },
     { step: 6, label: 'Zusatzoptionen' },
-    { step: 7, label: 'Fotoerlaubnis' },
-    { step: 8, label: 'Allergien' },
-    { step: 9, label: 'Zusammenfassung' },
+    {step: 7, label: 'Teilnahmeoptionen'},
+    {step: 8, label: 'Fotoerlaubnis'},
+    {step: 9, label: 'Allergien'},
+    {step: 10, label: 'Zahlungsart'},
+    {step: 11, label: 'Zusammenfassung'},
 ]
 </script>
 
@@ -91,13 +96,22 @@ const steps = [
                 <StepArrival        v-if="currentStep === 4" :formData="formData" :event="event" @next="goToStep" @back="goToStep" />
                 <StepRegistrationMode v-if="currentStep === 5" :formData="formData" :event="event" @next="goToStep" @back="goToStep" />
                 <StepAddons         v-if="currentStep === 6" :formData="formData" :event="event" :selectedAddons="selectedAddons" @next="goToStep" @back="goToStep" />
-                <StepPhotoPermissions v-if="currentStep === 7" :formData="formData" :event="event" @next="goToStep" @back="goToStep" />
-                <StepAllergies      v-if="currentStep === 8" :formData="formData" :event="event" @next="goToStep" @back="goToStep" />
+                <StepParticipationOptions v-if="currentStep === 7" :formData="formData" :event="event" @next="goToStep"
+                                          @back="goToStep"/>
+                <StepPhotoPermissions v-if="currentStep === 8" :formData="formData" :event="event" @next="goToStep"
+                                      @back="goToStep"/>
+                <StepAllergies v-if="currentStep === 9" :formData="formData" :event="event" @next="goToStep"
+                               @back="goToStep"/>
+                <StepPaymentMethod v-if="currentStep === 10" :formData="formData" :event="event" @next="goToStep"
+                                   @back="goToStep"/>
                 <StepSummary
-                    v-if="currentStep === 9"
+                    v-if="currentStep === 11"
                     :formData="formData"
                     :event="event"
+                    :summaryBaseAmount="summaryBaseAmount"
+                    :summaryAddonLines="summaryAddonLines"
                     :summaryAmount="summaryAmount"
+                    :summaryAmountValue="summaryAmountValue"
                     :summaryLoading="summaryLoading"
                     :submitting="submitting"
                     @back="goToStep"

app/Domains/Event/Views/Partials/SignUpForm/after-submit/SubmitSuccess.vue

@@ -26,31 +26,10 @@ const props = defineProps({
             Du hast noch kein erweitertes Führungszeugnis hinterlegt. Bitte reiche es umgehend ein.
         </div>
 
-        <template v-if="props.participant.needs_payment">
-            <table class="form-table" style="margin-bottom: 16px;">
-                <tr>
-                    <td>Kontoinhaber:</td><td>{{ props.event.accountOwner }}</td>
-                    <td rowspan="4" style="vertical-align: top; padding-left: 20px;" v-if="props.participant.identifier !== ''">
-                        <img :src="'/print-girocode/' + props.participant.identifier" alt="GiroCode" style="max-width: 180px;" />
-                        <span style="width: 180px; text-align: center; display: block; font-size: 0.8rem; color: #6b7280; margin-top: 4px;">Giro-Code</span>
-                    </td>
-                </tr>
-                <tr><td>IBAN:</td><td>{{ props.event.accountIban }}</td></tr>
-                <tr><td>Verwendungszweck:</td><td>{{ props.participant.payment_purpose }}</td></tr>
-                <tr><td>Betrag:</td><td><strong>{{ props.participant.amount_left_string }}</strong></td></tr>
-                <tr><td>&nbsp;</td><td>
-                    <a class="link" :href="`/api/v1/event/participant/${props.participant.identifier}/ical-payment`">Erinnerung in Kalender setzen</a>
-                </td></tr>
-            </table>
-
-            <p>
-                Bitte beachte, dass deine Anmeldung erst nach Zahlungseiongang vollständig ist.<br />
-                Wenn dieser nicht bis zum {{ props.event.registrationFinalEnd.formatted }} erfolgt, kann deine Anmeldung storniert werden.<br /><br />
-                Solltest du den Beitrag bis zu diesem Datum nicht oder nur teilweise überweisen können, kontaktiere bitte die Aktionsleitung, damit wir eine gemeinsame Lösiung finden können.
-            </p>
-
-
-        </template>
+        <!-- Zahlungs-Block kommt vollständig aus dem Zahlungsmodul (registrationSummary -> html). -->
+        <div v-if="props.participant.paymentSummary?.hasPaymentInformation"
+             v-html="props.participant.paymentSummary.html"
+             style="margin-bottom: 16px;"></div>
         <p v-else>
             Du musst keinen Beitrag überweisen. Deine Anmeldung ist bestätigt.
         </p>

app/Domains/Event/Views/Partials/SignUpForm/components/PaymentMethodInputs.vue

@@ -0,0 +1,53 @@
+<script setup>
+import TextEditor from "../../../../../../Views/Components/TextEditor.vue";
+
+// Generische, schema-getriebene Eingabefelder eines Zahlungsmoduls. Wiederverwendbar für künftige
+// Verfahren (SEPA, PayPal): das jeweilige Modul liefert das Schema, hier wird nur gerendert.
+const props = defineProps({
+    // [{ name, label, type, required }] -- z.B. aus participantOptionsSchema einer Zahlungsmethode.
+    schema: {type: Array, default: () => []},
+    // v-model: Objekt { optionName: value }
+    modelValue: {type: Object, default: () => ({})},
+})
+const emit = defineEmits(['update:modelValue'])
+
+function setValue(name, value) {
+    emit('update:modelValue', {...props.modelValue, [name]: value})
+}
+</script>
+
+<template>
+    <table class="form-table">
+        <tr v-for="option in schema" :key="option.name">
+            <td>
+                {{ option.label }}<span v-if="option.required" class="required-marker">*</span>:
+            </td>
+            <td>
+                <TextEditor
+                    v-if="option.type === 'richtext'"
+                    :modelValue="modelValue[option.name] ?? ''"
+                    @update:modelValue="value => setValue(option.name, value)"
+                />
+                <input
+                    v-else-if="option.type === 'checkbox'"
+                    type="checkbox"
+                    :checked="modelValue[option.name] ?? false"
+                    @change="event => setValue(option.name, event.target.checked)"
+                />
+                <input
+                    v-else
+                    type="text"
+                    :value="modelValue[option.name] ?? ''"
+                    @input="event => setValue(option.name, event.target.value)"
+                />
+            </td>
+        </tr>
+    </table>
+</template>
+
+<style scoped>
+.required-marker {
+    color: #ef4444;
+    margin-left: 2px;
+}
+</style>

app/Domains/Event/Views/Partials/SignUpForm/composables/stepFlow.js

@@ -0,0 +1,45 @@
+// Zentrale Schrittreihenfolge des Anmelde-Wizards. Einige Schritte sind optional und werden
+// übersprungen, wenn sie für das Event nicht zutreffen (Zusatzoptionen, Teilnahmeoptionen).
+// Der Zahlungsschritt wird separat in useSignupForm anhand des berechneten Betrags übersprungen.
+export const STEP_AGE = 1
+export const STEP_CONTACT = 2
+export const STEP_PERSONAL = 3
+export const STEP_ARRIVAL = 4
+export const STEP_REGISTRATION = 5
+export const STEP_ADDONS = 6
+export const STEP_PARTICIPATION_OPTIONS = 7
+export const STEP_PHOTO = 8
+export const STEP_ALLERGIES = 9
+export const STEP_PAYMENT = 10
+export const STEP_SUMMARY = 11
+
+// Ob ein (optionaler) Schritt für dieses Event angezeigt wird.
+export function stepVisible(event, step) {
+    if (step === STEP_ADDONS) {
+        return (event.addons?.length ?? 0) > 0
+    }
+
+    if (step === STEP_PARTICIPATION_OPTIONS) {
+        return (event.participationOptions?.length ?? 0) > 0
+    }
+
+    return true
+}
+
+// Nächster sichtbarer Schritt nach `step` (überspringt ausgeblendete optionale Schritte).
+export function nextVisibleFrom(event, step) {
+    let candidate = step + 1
+    while (candidate < STEP_SUMMARY && !stepVisible(event, candidate)) {
+        candidate++
+    }
+    return candidate
+}
+
+// Vorheriger sichtbarer Schritt vor `step`.
+export function prevVisibleFrom(event, step) {
+    let candidate = step - 1
+    while (candidate > STEP_AGE && !stepVisible(event, candidate)) {
+        candidate--
+    }
+    return candidate
+}

app/Domains/Event/Views/Partials/SignUpForm/composables/useSignupForm.js

@@ -1,5 +1,6 @@
-import { ref, reactive, computed } from 'vue'
+import {reactive, ref} from 'vue'
 import axios from 'axios'
+import {STEP_PAYMENT, STEP_SUMMARY} from './stepFlow.js'
 
 export function useSignupForm(event, participantData) {
     const currentStep = ref(1)
@@ -9,8 +10,15 @@ export function useSignupForm(event, participantData) {
 
     const selectedAddons = reactive({})
 
+    // Für die Aktion freigeschaltete Zahlungsmethoden; ist genau eine aktiv, wird sie vorausgewählt.
+    const activeMethods = (event.paymentMethods ?? []).filter(m => m.active)
+
     const formData = reactive({
         eatingHabit: 'EATING_HABIT_VEGAN',
+        paymentMethod: activeMethods.length === 1 ? activeMethods[0].slug : null,
+        paymentOptions: {},
+        // Antworten auf die event-spezifischen Teilnahmeoptionen: { [question.key]: option.value }
+        participationOptions: {},
         userId: participantData.id,
         eventId: event.id,
         vorname: participantData.firstname ?? '',
@@ -51,33 +59,52 @@ export function useSignupForm(event, participantData) {
     })
 
     const summaryAmount = ref('')
+    const summaryAmountValue = ref(0)
+    const summaryBaseAmount = ref('')
+    const summaryAddonLines = ref([])
+
+    const fetchAmount = async () => {
+        summaryLoading.value = true
+        try {
+            const res = await axios.post('/api/v1/event/' + event.id + '/calculate-amount', {
+                arrival: formData.arrival,
+                departure: formData.departure,
+                event_id: event.id,
+                participation_group: formData.participant_group,
+                selected_amount: formData.beitrag,
+                addons: selectedAddons,
+                participationType: formData.participationType,
+                beitrag: formData.beitrag,
+                sibling: formData.sibling,
+            })
+            summaryAmount.value = res.data.amount
+            summaryAmountValue.value = Number(res.data.amountValue ?? 0)
+            summaryBaseAmount.value = res.data.baseAmount ?? ''
+            summaryAddonLines.value = res.data.addons ?? []
+        } finally {
+            summaryLoading.value = false
+        }
+    }
 
     const goToStep = async (step) => {
-        if (step === 9) {
-            summaryLoading.value = true
-            summaryAmount.value = ''
-            try {
-                const res = await axios.post('/api/v1/event/' + event.id + '/calculate-amount', {
-                    arrival: formData.arrival,
-                    departure: formData.departure,
-                    event_id: event.id,
-                    participation_group: formData.participant_group,
-                    selected_amount: formData.beitrag,
-                    addons: selectedAddons,
-                    participationType: formData.participationType,
-                    beitrag: formData.beitrag,
-                    sibling: formData.sibling,
-                })
-               summaryAmount.value = res.data.amount
-            } finally {
-                summaryLoading.value = false
+        if (step === STEP_PAYMENT) {
+            // Betrag ermitteln: Bei 0 € wird die Zahlungsart-Auswahl übersprungen.
+            await fetchAmount()
+            if (summaryAmountValue.value <= 0) {
+                formData.paymentMethod = null
+                formData.paymentOptions = {}
+                currentStep.value = STEP_SUMMARY
+                return
             }
+        } else if (step === STEP_SUMMARY) {
+            await fetchAmount()
         }
         currentStep.value = step
     }
 
     const submit = async () => {
-        if (!formData.summary_information_correct || !formData.summary_accept_terms || !formData.legal_accepted || !formData.payment) {
+        // Zahlungs-Bestätigung wird im Summary-Schritt kontextabhängig erzwungen (nur bei Überweisung).
+        if (!formData.summary_information_correct || !formData.summary_accept_terms || !formData.legal_accepted) {
             return
         }
         submitting.value = true
@@ -95,5 +122,18 @@ export function useSignupForm(event, participantData) {
         }
     }
 
-    return { currentStep, goToStep, formData, selectedAddons, submit, submitting, submitResult, summaryLoading, summaryAmount }
+    return {
+        currentStep,
+        goToStep,
+        formData,
+        selectedAddons,
+        submit,
+        submitting,
+        submitResult,
+        summaryLoading,
+        summaryAmount,
+        summaryAmountValue,
+        summaryBaseAmount,
+        summaryAddonLines
+    }
 }

app/Domains/Event/Views/Partials/SignUpForm/steps/StepAddons.vue

@@ -1,6 +1,10 @@
 <script setup>
+import {nextVisibleFrom, STEP_ADDONS} from "../composables/stepFlow.js";
+
 const props = defineProps({ formData: Object, event: Object, selectedAddons: Object })
 const emit = defineEmits(['next', 'back'])
+
+const next = () => emit('next', nextVisibleFrom(props.event, STEP_ADDONS))
 </script>
 
 <template>
@@ -25,13 +29,21 @@ const emit = defineEmits(['next', 'back'])
         <!-- Addons -->
         <div v-if="event.addons?.length > 0">
             <h3>Zusatzoptionen</h3>
-            <div v-for="addon in event.addons" :key="addon.id" style="margin-bottom: 16px; padding: 12px; background: #f8fafc; border-radius: 8px;">
+            <div v-for="addon in event.addons" :key="addon.key"
+                 style="margin-bottom: 16px; padding: 12px; background: #f8fafc; border-radius: 8px;">
                 <label style="display: flex; gap: 12px; cursor: pointer;">
-                    <input type="checkbox" v-model="selectedAddons[addon.id]" style="margin-top: 4px;" />
+                    <input type="checkbox" v-model="selectedAddons[addon.key]" style="margin-top: 4px;"/>
                     <span>
-                        <strong>{{ addon.name }}</strong>
-                        <span style="display: block; color: #6b7280; font-size: 0.875rem;">Betrag: {{ addon.amount }}</span>
-                        <span style="display: block; color: #374151; font-size: 0.875rem; margin-top: 4px;">{{ addon.description }}</span>
+                        <strong>{{ addon.title }}</strong>
+                        <span style="display: block; color: #6b7280; font-size: 0.875rem;">
+                            <template v-if="addon.free">Kostenfrei</template>
+                            <template v-else>{{ addon.priceReadable }}<template
+                                v-if="!addon.flat"> / Tag</template></template>
+                        </span>
+                        <span v-if="addon.description"
+                              style="display: block; color: #374151; font-size: 0.875rem; margin-top: 4px;">{{
+                                addon.description
+                            }}</span>
                     </span>
                 </label>
             </div>
@@ -39,7 +51,7 @@ const emit = defineEmits(['next', 'back'])
 
         <div class="btn-row">
             <button type="button" class="btn-secondary" @click="emit('back', 5)">← Zurück</button>
-            <button type="button" class="btn-primary" @click="emit('next', 7)">Weiter →</button>
+            <button type="button" class="btn-primary" @click="next">Weiter →</button>
         </div>
     </div>
 </template>

app/Domains/Event/Views/Partials/SignUpForm/steps/StepAllergies.vue

@@ -43,8 +43,8 @@ const emit = defineEmits(['next', 'back'])
             </tr>
             <tr>
                 <td colspan="2" class="btn-row">
-                    <button type="button" class="btn-secondary" @click="emit('back', 7)">← Zurück</button>
-                    <button type="button" class="btn-primary" @click="emit('next', 9)">Weiter →</button>
+                    <button type="button" class="btn-secondary" @click="emit('back', 8)">← Zurück</button>
+                    <button type="button" class="btn-primary" @click="emit('next', 10)">Weiter →</button>
                 </td>
             </tr>
         </table>

app/Domains/Event/Views/Partials/SignUpForm/steps/StepParticipationOptions.vue

@@ -0,0 +1,62 @@
+<script setup>
+import {computed} from "vue";
+import {nextVisibleFrom, prevVisibleFrom, STEP_PARTICIPATION_OPTIONS} from "../composables/stepFlow.js";
+
+const props = defineProps({formData: Object, event: Object})
+const emit = defineEmits(['next', 'back'])
+
+const questions = computed(() => props.event.participationOptions ?? [])
+
+// Pflichtfeld: "Weiter" erst möglich, wenn jede Frage beantwortet ist.
+const canProceed = computed(() =>
+    questions.value.every(q => {
+        const value = props.formData.participationOptions[q.key]
+        return value !== undefined && value !== null && String(value).trim() !== ''
+    })
+)
+
+const back = () => emit('back', prevVisibleFrom(props.event, STEP_PARTICIPATION_OPTIONS))
+const next = () => emit('next', nextVisibleFrom(props.event, STEP_PARTICIPATION_OPTIONS))
+</script>
+
+<template>
+    <div>
+        <h3>Teilnahmeoptionen</h3>
+        <p style="color: #6b7280; font-size: 0.95rem; margin-bottom: 20px;">
+            Bitte triff für jede Auswahl eine Entscheidung.
+        </p>
+
+        <table class="form-table">
+            <tr v-for="question in questions" :key="question.key">
+                <td>
+                    {{ question.title || question.label }}:
+                    <span v-if="question.title && question.label" class="option-hint">{{ question.label }}</span>
+                </td>
+                <td>
+                    <select v-model="formData.participationOptions[question.key]">
+                        <option value="">Bitte wählen</option>
+                        <option v-for="option in question.options" :key="option.value" :value="option.value">
+                            {{ option.label }}
+                        </option>
+                    </select>
+                </td>
+            </tr>
+        </table>
+
+        <div class="btn-row">
+            <button type="button" class="btn-secondary" @click="back">← Zurück</button>
+            <button type="button" class="btn-primary" :disabled="!canProceed" @click="next">Weiter →</button>
+        </div>
+    </div>
+</template>
+
+<style scoped>
+.option-hint {
+    display: block;
+    margin-top: 2px;
+    font-size: 0.8rem;
+    font-style: italic;
+    font-weight: 400;
+    color: #6b7280;
+}
+</style>

app/Domains/Event/Views/Partials/SignUpForm/steps/StepPaymentMethod.vue

@@ -0,0 +1,226 @@
+<script setup>
+import {computed} from "vue";
+import PaymentMethodInputs from "../components/PaymentMethodInputs.vue";
+import Icon from "../../../../../../Views/Components/Icon.vue";
+
+const props = defineProps({formData: Object, event: Object})
+const emit = defineEmits(['next', 'back'])
+
+// Für die Aktion freigeschaltete Zahlungsmethoden.
+const methods = computed(() => (props.event.paymentMethods ?? []).filter(m => m.active))
+
+const selectedMethod = computed(() =>
+    methods.value.find(m => m.slug === props.formData.paymentMethod) ?? null
+)
+
+const participantSchema = computed(() => selectedMethod.value?.participantOptionsSchema ?? [])
+
+// Font-Awesome-Icon je Zahlungsart: konfiguriertes Symbol hat Vorrang, sonst Slug-Default
+// (Fallback: generische Karte).
+function iconFor(method) {
+    const configured = method.configuration?.icon
+    if (configured) return configured
+    if (method.slug === 'PAYMENT_ACCOUNT_TRANSACTION') return 'building-columns'
+    if (method.slug === 'PAYMENT_NOT_DEFINED') return 'money-bill-wave'
+    return 'credit-card'
+}
+
+function selectMethod(slug) {
+    props.formData.paymentMethod = slug
+    // Eingaben zurücksetzen -- pro Methode eigene Felder.
+    props.formData.paymentOptions = {}
+}
+
+// "Weiter" ist erst möglich, wenn eine Methode gewählt und alle Pflicht-Eingaben befüllt sind.
+const canProceed = computed(() => {
+    if (!props.formData.paymentMethod) return false
+    return participantSchema.value
+        .filter(o => o.required)
+        .every(o => {
+            const value = props.formData.paymentOptions[o.name]
+            return value !== undefined && value !== null && String(value).trim() !== ''
+        })
+})
+</script>
+
+<template>
+    <div>
+        <h3 style="margin: 0 0 6px 0; color: #111827;">Zahlungsweise</h3>
+        <p style="margin: 0 0 24px 0; color: #6b7280; font-size: 0.95rem;">Bitte wähle, wie du deinen Teilnahmebeitrag
+            begleichen möchtest.</p>
+
+        <div class="pay-card-row">
+            <div
+                v-for="method in methods"
+                :key="method.slug"
+                class="pay-card"
+                :class="{ 'pay-card--active': formData.paymentMethod === method.slug }"
+                role="radio"
+                :aria-checked="formData.paymentMethod === method.slug"
+                tabindex="0"
+                @click="selectMethod(method.slug)"
+                @keydown.enter.prevent="selectMethod(method.slug)"
+                @keydown.space.prevent="selectMethod(method.slug)"
+            >
+                <div class="pay-card__badge">
+                    <Icon :name="iconFor(method)"/>
+                </div>
+                <div class="pay-card__body">
+                    <h4 class="pay-card__title">{{ method.name }}</h4>
+                    <p v-if="method.description" class="pay-card__desc">{{ method.description }}</p>
+                </div>
+                <div class="pay-card__check" aria-hidden="true">✓</div>
+            </div>
+        </div>
+
+        <div v-if="participantSchema.length > 0" class="pay-inputs">
+            <PaymentMethodInputs :schema="participantSchema" v-model="formData.paymentOptions"/>
+        </div>
+
+        <div class="btn-row">
+            <button type="button" class="btn-secondary" @click="emit('back', 9)">← Zurück</button>
+            <button type="button" class="btn-primary" :disabled="!canProceed" @click="emit('next', 11)">Weiter →
+            </button>
+        </div>
+    </div>
+</template>
+
+<style scoped>
+.pay-card-row {
+    display: flex;
+    gap: 20px;
+    flex-wrap: wrap;
+}
+
+.pay-card {
+    position: relative;
+    flex: 1 1 280px;
+    min-width: 0;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    background: #f8fafc;
+    border: 2px solid #e5e7eb;
+    border-radius: 12px;
+    padding: 28px 20px;
+    cursor: pointer;
+    transition: border-color 0.15s, box-shadow 0.15s, transform 0.1s;
+    text-align: center;
+}
+
+.pay-card:hover {
+    border-color: #2563eb;
+    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.12);
+    transform: translateY(-2px);
+}
+
+.pay-card--active {
+    border-color: #2563eb;
+    background: #eff6ff;
+    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.12);
+}
+
+.pay-card__badge {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    width: 64px;
+    height: 64px;
+    margin-bottom: 14px;
+    font-size: 1.6rem;
+    color: #2563eb;
+    background: #e0f2fe;
+    border-radius: 50%;
+}
+
+.pay-card--active .pay-card__badge {
+    background: #dbeafe;
+}
+
+.pay-card__body {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 6px;
+}
+
+.pay-card__title {
+    margin: 0;
+    font-size: 1.1rem;
+    font-weight: 700;
+    color: #111827;
+}
+
+.pay-card__desc {
+    margin: 0;
+    font-size: 0.9rem;
+    color: #374151;
+}
+
+.pay-card__check {
+    position: absolute;
+    top: 12px;
+    right: 12px;
+    width: 24px;
+    height: 24px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 50%;
+    background: #2563eb;
+    color: #fff;
+    font-size: 0.8rem;
+    font-weight: 700;
+    opacity: 0;
+    transform: scale(0.6);
+    transition: opacity 0.12s, transform 0.12s;
+}
+
+.pay-card--active .pay-card__check {
+    opacity: 1;
+    transform: scale(1);
+}
+
+.pay-inputs {
+    margin-top: 20px;
+    padding: 16px;
+    background: #f8fafc;
+    border: 1px solid #e5e7eb;
+    border-radius: 10px;
+}
+
+/* ─── Smartphone ─── */
+@media (max-width: 639px) {
+    .pay-card-row {
+        flex-direction: column;
+        gap: 12px;
+    }
+
+    .pay-card {
+        flex: 1 1 100%;
+        flex-direction: row;
+        text-align: left;
+        align-items: center;
+        gap: 14px;
+        padding: 16px 14px;
+    }
+
+    .pay-card__badge {
+        flex: 0 0 52px;
+        width: 52px;
+        height: 52px;
+        margin-bottom: 0;
+        font-size: 1.6rem;
+    }
+
+    .pay-card__body {
+        flex: 1;
+        align-items: flex-start;
+        text-align: left;
+    }
+
+    .pay-card__title {
+        font-size: 1rem;
+    }
+}
+</style>

app/Domains/Event/Views/Partials/SignUpForm/steps/StepPhotoPermissions.vue

@@ -1,16 +1,15 @@
 <script setup>
+import {prevVisibleFrom, STEP_ALLERGIES, STEP_PHOTO} from "../composables/stepFlow.js";
+
 const props = defineProps({ formData: Object, event: Object })
 const emit = defineEmits(['next', 'back'])
 
 const acceptAll = () => {
     Object.keys(props.formData.foto).forEach(k => props.formData.foto[k] = true)
-    emit('next', 8)
+    emit('next', STEP_ALLERGIES)
 }
 
-const back = () => {
-    const hasAddons = (props.event.addons?.length > 0) || props.event.solidarityPayment
-    emit('back', hasAddons ? 6 : 5)
-}
+const back = () => emit('back', prevVisibleFrom(props.event, STEP_PHOTO))
 </script>
 
 <template>
@@ -27,7 +26,7 @@ const back = () => {
         <div class="btn-row">
             <button type="button" class="btn-secondary" @click="back">← Zurück</button>
             <button type="button" class="btn-primary" style="background: #059669;" @click="acceptAll">Alle akzeptieren & weiter</button>
-            <button type="button" class="btn-primary" @click="emit('next', 8)">Weiter →</button>
+            <button type="button" class="btn-primary" @click="emit('next', 9)">Weiter →</button>
         </div>
     </div>
 </template>

app/Domains/Event/Views/Partials/SignUpForm/steps/StepRegistrationMode.vue

@@ -1,5 +1,6 @@
 <script setup>
-import { watch } from "vue";
+import {watch} from "vue";
+import {nextVisibleFrom, STEP_REGISTRATION} from "../composables/stepFlow.js";
 
 const props = defineProps({ formData: Object, event: Object })
 const emit = defineEmits(['next', 'back'])
@@ -17,8 +18,7 @@ watch(
 )
 
 const nextStep = () => {
-    const hasAddons = (props.event.addons?.length ?? 0) > 0
-    emit('next', hasAddons ? 6 : 7)
+    emit('next', nextVisibleFrom(props.event, STEP_REGISTRATION))
 }
 </script>
 

app/Domains/Event/Views/Partials/SignUpForm/steps/StepSummary.vue

@@ -1,15 +1,59 @@
 <script setup>
+import {computed} from "vue";
 import {format, parseISO} from "date-fns";
 
+const PAYMENT_ACCOUNT_TRANSACTION = 'PAYMENT_ACCOUNT_TRANSACTION'
+
 const props = defineProps({
     formData: Object,
     event: Object,
+    summaryBaseAmount: {type: String, default: ''},
+    summaryAddonLines: {type: Array, default: () => []},
     summaryAmount: String,
+    summaryAmountValue: {type: Number, default: 0},
     summaryLoading: Boolean,
     submitting: Boolean,
 })
 const emit = defineEmits(['back', 'submit'])
 
+const selectedMethod = computed(() =>
+    (props.event.paymentMethods ?? []).find(m => m.slug === props.formData.paymentMethod) ?? null
+)
+
+// Die Überweisungs-Bestätigung wird nur bei Banküberweisung verlangt (AC #6).
+const requiresPaymentConfirmation = computed(() =>
+    props.formData.paymentMethod === PAYMENT_ACCOUNT_TRANSACTION
+)
+
+// Bestätigungstext ist ein admin-konfigurierbarer Freitext ({amount}-Platzhalter), sonst Default.
+const paymentConfirmationText = computed(() => {
+    const configured = selectedMethod.value?.configuration?.summary_confirmation_text
+    const template = (configured && String(configured).trim() !== '')
+        ? configured
+        : 'Ich bestätige, den Betrag von {amount} zu überweisen.'
+    return template.replaceAll('{amount}', props.summaryAmount ?? '')
+})
+
+// Zurück führt zur Zahlungsart (10), sofern dieser Schritt gezeigt wurde; bei 0 € direkt zu Allergien (9).
+const backTarget = computed(() => props.summaryAmountValue > 0 ? 10 : 9)
+
+// Gewählte Teilnahmeoptionen für die Zusammenfassung (label statt value anzeigen).
+const selectedParticipationOptions = computed(() =>
+    (props.event.participationOptions ?? []).map(question => {
+        const value = props.formData.participationOptions[question.key]
+        const option = (question.options ?? []).find(o => o.value === value)
+        return {label: question.title || question.label, value: option?.label ?? ''}
+    }).filter(entry => entry.value !== '')
+)
+
+const canSubmit = computed(() =>
+    props.formData.summary_information_correct
+    && props.formData.summary_accept_terms
+    && props.formData.legal_accepted
+    && (!requiresPaymentConfirmation.value || props.formData.payment)
+    && !props.submitting
+)
+
 function formatDate(dateString) {
     if (!dateString) return ''
     return format(parseISO(dateString), 'dd.MM.yyyy')
@@ -82,6 +126,11 @@ function eatingHabit() {
                     <td>{{ participationGroup() }}</td>
                 </tr>
 
+                <tr v-for="option in selectedParticipationOptions" :key="option.label">
+                    <td>{{ option.label }}:</td>
+                    <td>{{ option.value }}</td>
+                </tr>
+
                 <tr>
                     <td>Foto-Erlaubnis:</td>
                     <td>
@@ -116,6 +165,22 @@ function eatingHabit() {
                 <tr><td>Abreise:</td><td>{{ formatDate(formData.departure) }}</td></tr>
             </table>
 
+            <h4 style="margin: 0 0 8px 0;">Kostenübersicht</h4>
+            <table class="form-table cost-table" style="margin-bottom: 20px;">
+                <tr>
+                    <td>Teilnahmebeitrag:</td>
+                    <td>{{ summaryBaseAmount }}</td>
+                </tr>
+                <tr v-for="addon in summaryAddonLines" :key="addon.key">
+                    <td>{{ addon.title }}:</td>
+                    <td>{{ addon.free ? 'Kostenfrei' : addon.amount }}</td>
+                </tr>
+                <tr class="cost-total">
+                    <td><strong>Gesamtbetrag:</strong></td>
+                    <td><strong>{{ summaryAmount }}</strong></td>
+                </tr>
+            </table>
+
             <div style="display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px;">
                 <label style="display: flex; gap: 10px; cursor: pointer;">
                     <input type="checkbox" v-model="formData.summary_information_correct" />
@@ -129,18 +194,18 @@ function eatingHabit() {
                     <input type="checkbox" v-model="formData.legal_accepted" />
                     Ich stimme der Datenschutzerklärung zu.
                 </label>
-                <label style="display: flex; gap: 10px; cursor: pointer;">
+                <label v-if="requiresPaymentConfirmation" style="display: flex; gap: 10px; cursor: pointer;">
                     <input type="checkbox" v-model="formData.payment" />
-                    Ich bestätige, den Betrag von <strong>{{ summaryAmount }}</strong> zu überweisen.
+                    {{ paymentConfirmationText }}
                 </label>
             </div>
 
             <div class="btn-row">
-                <button type="button" class="btn-secondary" @click="emit('back', 8)">← Zurück</button>
+                <button type="button" class="btn-secondary" @click="emit('back', backTarget)">← Zurück</button>
                 <button
                     type="submit"
                     class="btn-primary"
-                    :disabled="!formData.summary_information_correct || !formData.summary_accept_terms || !formData.legal_accepted || !formData.payment || submitting"
+                    :disabled="!canSubmit"
                     style="background: #059669;"
                 >
                     {{ submitting ? 'Wird gesendet…' : 'Jetzt anmelden ✓' }}
@@ -149,3 +214,10 @@ function eatingHabit() {
         </div>
     </div>
 </template>
+
+<style scoped>
+.cost-table .cost-total td {
+    border-top: 1px solid #d1d5db;
+    padding-top: 8px;
+}
+</style>

app/Domains/Event/Views/Signup.vue

@@ -99,10 +99,14 @@ function close() {
 
             <div class="signup-body">
                 <SignupForm
+                    v-if="props.event.registrationAllowed"
                     :event="props.event"
                     :participantData="props.participantData ?? {}"
                     :localGroups="props.localGroups ?? []"
                 />
+                <p v-else class="signup-closed-notice">
+                    Die Anmeldung für diese Veranstaltung ist geschlossen.
+                </p>
             </div>
 
         </shadowed-box>
@@ -220,6 +224,14 @@ function close() {
     word-break: break-all;
 }
 
+.signup-closed-notice {
+    text-align: center;
+    padding: 24px;
+    color: #991b1b;
+    font-weight: 600;
+    font-size: 1rem;
+}
+
 /* ─── Tablet (640–1023px) ─── */
 @media (max-width: 1023px) {
     .signup-box {

app/Domains/Invoice/Controllers/EditController.php

@@ -65,7 +65,7 @@ class EditController extends CommonController{
         $currentEvents = $this->costUnits->getCostUnitsForNewInvoice(CostUnitType::COST_UNIT_TYPE_EVENT);
 
         return response()->json([
-            'invoice' => new InvoiceResource($invoice)->toArray(),
+            'invoice' => new InvoiceResource($newInvoice)->toArray(),
             'status' => 'success',
             'costUnits' => array_merge($runningJobs, $currentEvents),
         ]);

app/Enumerations/PaymentStatus.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Enumerations;
+
+use App\Scopes\CommonModel;
+
+/**
+ * Lebenszyklus-Status einer Zahlung -- DB-gestützt, analog zu {@see InvoiceStatus}.
+ * Reine Steuersignale (z.B. Redirect) gehören NICHT hierher, sondern bleiben transiente
+ * Felder auf {@see \App\EventPaymentModules\DTO\DoPaymentResponse}.
+ */
+class PaymentStatus extends CommonModel
+{
+    public const PAYMENT_STATUS_PENDING = 'pending';
+    public const PAYMENT_STATUS_SCHEDULED = 'scheduled';
+    public const PAYMENT_STATUS_PAID = 'paid';
+    public const PAYMENT_STATUS_FAILED = 'failed';
+
+    protected $table = 'payment_status';
+
+    protected $fillable = [
+        'slug',
+    ];
+}

app/Enumerations/TaxExemptionReason.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Enumerations;
+
+use App\Scopes\CommonModel;
+
+/**
+ * Gründe für eine Umsatzsteuerbefreiung -- DB-gestützt (analog {@see PaymentStatus}), damit Label und
+ * der auf der Rechnung verpflichtende Hinweis nach § 14 Abs. 4 Nr. 8 UStG zentral pflegbar sind.
+ * Gemeinnützigkeit allein befreit nicht; die Befreiung braucht immer einen konkreten Rechtsgrund
+ * (Vereins-Fälle über § 4 Nr. 22a / Nr. 25).
+ *
+ * @property string $slug
+ * @property string $name
+ * @property string $invoice_text
+ * @property bool $requires_note
+ * @property int $sort_order
+ */
+class TaxExemptionReason extends CommonModel
+{
+    public const string USTG_19 = 'ustg_19';
+    public const string USTG_4_24 = 'ustg_4_24';
+    public const string USTG_4_25A = 'ustg_4_25a';
+    public const string USTG_4_22A = 'ustg_4_22a';
+    public const string CUSTOM = 'custom';
+
+    protected $table = 'tax_exemption_reasons';
+    protected $primaryKey = 'slug';
+    public $incrementing = false;
+    protected $keyType = 'string';
+
+    protected $fillable = [
+        'slug',
+        'name',
+        'invoice_text',
+        'requires_note',
+        'sort_order',
+    ];
+
+    protected $casts = [
+        'requires_note' => 'boolean',
+        'sort_order' => 'integer',
+    ];
+
+    /**
+     * Pflichthinweis für die Rechnung. Bei einem individuellen Grund (requires_note) wird der hinterlegte
+     * Freitext des Tenants verwendet.
+     */
+    public function invoiceText(?string $customNote = null): string
+    {
+        return $this->requires_note ? trim((string) $customNote) : $this->invoice_text;
+    }
+
+    /**
+     * Optionen für das Frontend inkl. Vorschau-Text. Bei einem Freitext-Grund ist `text` leer, da der Text
+     * erst aus dem Freitext des Tenants entsteht.
+     *
+     * @return array<int, array{value: string, label: string, text: string}>
+     */
+    public static function options(): array
+    {
+        return self::orderBy('sort_order')->get()
+            ->map(static fn (self $reason): array => [
+                'value' => $reason->slug,
+                'label' => $reason->name,
+                'text' => $reason->requires_note ? '' : $reason->invoice_text,
+            ])
+            ->all();
+    }
+}

app/Enumerations/VatPricingMode.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Enumerations;
+
+/**
+ * Preismodus bei bestehender Umsatzsteuerpflicht: entweder ist die USt bereits im konfigurierten Beitrag
+ * enthalten (Brutto/„Supermarkt") oder sie wird bei der Preisermittlung aufgeschlagen (Netto). Gespeichert
+ * wird immer der finale Brutto-Beitrag; der Modus beeinflusst nur die Preisermittlung im Anmeldeprozess.
+ */
+enum VatPricingMode: string
+{
+    case Inclusive = 'inclusive';
+    case AddOn = 'add_on';
+
+    public function label(): string
+    {
+        return match ($this) {
+            self::Inclusive => 'Inklusive – Beiträge sind Endpreise (USt enthalten)',
+            self::AddOn => 'Aufschlagen – USt wird auf die Beiträge aufgeschlagen',
+        };
+    }
+
+    /**
+     * Optionen für das Frontend: [['value' => ..., 'label' => ...], ...].
+     *
+     * @return array<int, array{value: string, label: string}>
+     */
+    public static function options(): array
+    {
+        return array_map(
+            static fn (self $mode): array => [
+                'value' => $mode->value,
+                'label' => $mode->label(),
+            ],
+            self::cases(),
+        );
+    }
+}

app/EventPaymentModules/AbstractEventPaymentModule.php

@@ -0,0 +1,176 @@
+<?php
+
+namespace App\EventPaymentModules;
+
+use App\Enumerations\PaymentStatus;
+use App\EventPaymentModules\DTO\CreateInvoiceRequest;
+use App\EventPaymentModules\DTO\CreateInvoiceResponse;
+use App\EventPaymentModules\DTO\DoPaymentRequest;
+use App\EventPaymentModules\DTO\DoPaymentResponse;
+use App\EventPaymentModules\DTO\RegistrationSummaryRequest;
+use App\EventPaymentModules\DTO\RegistrationSummaryResponse;
+
+/**
+ * Gemeinsame Basis aller Zahlungsmodule. Hält den geteilten Code und die aus {@see getOptions()}
+ * abgeleiteten Options-Helfer; konkrete Module definieren nur ihre Identität, ihr Options-Schema
+ * und -- später -- die je Zahlungsart variierenden Teile (z.B. den Rechnungs-Schlusssatz).
+ */
+abstract class AbstractEventPaymentModule implements EventPaymentModule
+{
+    public function defaultDescription(): ?string
+    {
+        return null;
+    }
+
+    /**
+     * Standard-Konfiguration beim Anlegen der Tenant-Instanz. Standard: leer.
+     *
+     * @return array<string, mixed>
+     */
+    public function defaultConfiguration(): array
+    {
+        return [];
+    }
+
+    /**
+     * Payer-seitige Eingaben, die eine Zahlungsart vom Teilnehmer benötigt (z.B. später SEPA-IBAN,
+     * PayPal-Mail). Standard: keine. Gleiche Form wie getOptions(): [{name,label,type,required}].
+     *
+     * @return array<int, array{name: string, label: string, type: string, required: bool}>
+     */
+    public function getParticipantOptions(): array
+    {
+        return [];
+    }
+
+    // -----------------------------------------------------------------------------------------
+    // Aus dem jeweiligen Schema abgeleitete Helfer (Admin-Config = getOptions(),
+    // Teilnehmer-Eingaben = getParticipantOptions()).
+    // -----------------------------------------------------------------------------------------
+
+    /** @return array<int, string> */
+    public function requiredOptionKeys(): array
+    {
+        return $this->requiredKeys($this->getOptions());
+    }
+
+    /**
+     * @param array<string, mixed> $config
+     * @return array<string, mixed>
+     */
+    public function sanitizeConfiguration(array $config): array
+    {
+        return $this->sanitizeAgainst($this->getOptions(), $config);
+    }
+
+    /** @param array<string, mixed> $config */
+    public function isConfigurationComplete(array $config): bool
+    {
+        return $this->allRequiredFilled($this->getOptions(), $config);
+    }
+
+    /**
+     * @param array<string, mixed> $input
+     * @return array<string, mixed>
+     */
+    public function sanitizeParticipantOptions(array $input): array
+    {
+        return $this->sanitizeAgainst($this->getParticipantOptions(), $input);
+    }
+
+    /** @param array<string, mixed> $input */
+    public function participantOptionsComplete(array $input): bool
+    {
+        return $this->allRequiredFilled($this->getParticipantOptions(), $input);
+    }
+
+    /**
+     * @param array<int, array{name: string, required?: bool}> $schema
+     * @return array<int, string>
+     */
+    private function requiredKeys(array $schema): array
+    {
+        return array_values(array_map(
+            static fn (array $option) => $option['name'],
+            array_filter($schema, static fn(array $option) => $option['required'] ?? false)
+        ));
+    }
+
+    /**
+     * Reduziert Eingaben auf die im Schema definierten Keys (unbekannte werden verworfen).
+     *
+     * @param array<int, array{name: string}> $schema
+     * @param array<string, mixed> $input
+     * @return array<string, mixed>
+     */
+    private function sanitizeAgainst(array $schema, array $input): array
+    {
+        $result = [];
+        foreach ($schema as $option) {
+            if (array_key_exists($option['name'], $input)) {
+                $result[$option['name']] = $input[$option['name']];
+            }
+        }
+
+        return $result;
+    }
+
+    /**
+     * Sind alle Pflichtfelder des Schemas befüllt (non-empty)?
+     *
+     * @param array<int, array{name: string, required?: bool}> $schema
+     * @param array<string, mixed> $input
+     */
+    private function allRequiredFilled(array $schema, array $input): bool
+    {
+        foreach ($this->requiredKeys($schema) as $key) {
+            $value = $input[$key] ?? null;
+            if ($value === null || $value === '' || $value === []) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    // -----------------------------------------------------------------------------------------
+    // Operative Methoden -- in dieser Iteration bewusst als Stubs.
+    // -----------------------------------------------------------------------------------------
+
+    public function registrationSummary(RegistrationSummaryRequest $request): RegistrationSummaryResponse
+    {
+        // TODO: In einer Folge-Iteration ausformulieren (zahlungsspezifischer Teil der Zusammenfassung).
+        return new RegistrationSummaryResponse();
+    }
+
+    public function doPayment(DoPaymentRequest $request): DoPaymentResponse
+    {
+        // TODO: In einer Folge-Iteration ausformulieren. Default: nichts aktiv anzustoßen (Status offen).
+        $response = new DoPaymentResponse();
+        $response->success = true;
+        $response->status = PaymentStatus::PAYMENT_STATUS_PENDING;
+
+        return $response;
+    }
+
+    /**
+     * Template-Method: Der gemeinsame Rechnungs-Rumpf wird hier gebaut, der variierende Schlusssatz
+     * kommt aus {@see invoiceClosingStatement()} des jeweiligen Moduls.
+     */
+    public function createInvoice(CreateInvoiceRequest $request): CreateInvoiceResponse
+    {
+        $response = new CreateInvoiceResponse();
+        // TODO: In einer Folge-Iteration den gemeinsamen Rumpf (Betrag, Leistung, Teilnehmerdaten) befüllen
+        //       und an die Invoice-Domain anbinden.
+        $response->success = true;
+        $response->closingStatement = $this->invoiceClosingStatement($request);
+
+        return $response;
+    }
+
+    /**
+     * Der je Zahlungsart variierende Schlusssatz der Rechnung
+     * ("Bitte überweise bis ..." / "wird abgebucht ..." / "wurde per PayPal beglichen").
+     */
+    abstract protected function invoiceClosingStatement(CreateInvoiceRequest $request): string;
+}

app/EventPaymentModules/CLAUDE.md

@@ -0,0 +1,123 @@
+# Zahlungsmodule (`app/EventPaymentModules`)
+
+Interface-gesteuerte Strategie-Schicht: Das Verhalten je Zahlungsart (Optionen, Anmelde-Zusammenfassung, Zahlung,
+Rechnung) liegt gekapselt in einem Modul pro Zahlungsart. Aufgelöst wird über den Slug.
+
+## Aufbau
+
+- `EventPaymentModule` — **Core-Interface**. Hält nur das, was **jede** Zahlungsart hat:
+  `slug()`, `defaultName()/defaultDescription()`, `getOptions()`, `registrationSummary()`, `doPayment()`,
+  `createInvoice()`.
+- `AbstractEventPaymentModule` — Basisklasse (Template-Method). Liefert die aus `getOptions()` abgeleiteten Helfer
+  (`requiredOptionKeys()`, `sanitizeConfiguration()`, `isConfigurationComplete()`) und sinnvolle Default-/Stub-Bodies.
+- `Modules/` — konkrete Module (flach, eine Klasse je Zahlungsart):
+  `AccountTransferPaymentModule` (Überweisung), `UndefinedPaymentModule` (Barzahlung/Sonstiges).
+- `DTO/` — geteilte Request/Response-DTOs je Operation (`DoPayment*`, `CreateInvoice*`, `RegistrationSummary*`).
+- `EventPaymentModuleRegistry` — statische Map `slug → Modul-Instanz` (`forSlug()`, `all()`, `slugs()`). **Neue Module
+  hier eintragen.** Kein Container-Binding.
+- `ProvidesGiroCode` — **Fähigkeits-Interface** (siehe unten).
+
+## Kernregeln
+
+- **Zwei getrennte Options-Schemata (beide im Code, gleiche Form `['name','label','type','required']`):**
+    - `getOptions()` = **Admin-Config** (was der/die Veranstalter\*in pflegt, z.B. Empfänger-Konto). Werte in der DB
+      (`configuration`, s.u.).
+    - `getParticipantOptions()` = **Teilnehmer-Eingaben** beim Anmelden (payer-seitig, z.B. künftig
+      SEPA-IBAN/PayPal-Mail; beide Bestandsmodule: `[]`). Werte in `event_participants.payment_options` (JSON).
+      Abgesichert über
+      `sanitizeParticipantOptions()` / `participantOptionsComplete()` (Guard im `SignUpCommand`).
+    - `type` ist i.d.R. `'string'`; `'richtext'` wird über `Views/Components/TextEditor.vue` (TinyMCE, HTML) gerendert
+      und via `v-html`/`{!! !!}` ausgegeben; `'icon'` rendert die `Views/Components/RichSelectBox.vue` (kuratierte
+      FA-Symbol-Auswahl, Liste in `resources/js/constants/paymentMethodIcons.js`). Teilnehmer-Eingaben rendert die
+      generische `SignUpForm/components/PaymentMethodInputs.vue` schema-getrieben.
+  - Optionaler Schlüssel `'hint'` je Option: erklärender Hilfetext, den die Admin-Render-Stellen unter dem Feld anzeigen
+    (z.B. bei `payment_information`, dass der Text am Anmeldeende + in der Mail erscheint).
+  - `defaultConfiguration()` je Modul liefert die Start-Config beim Anlegen der Tenant-Instanz (`CreateTenantAction`),
+    aktuell das Default-Symbol (`icon`): Überweisung `building-columns`, Sonstiges `coins`.
+- **Aktivierungs-Guard:** Eine Tenant-Zahlungsmethode darf nur `active` werden, wenn alle `required`-Optionen befüllt
+  sind (`isConfigurationComplete()`), erzwungen in `UpdateAvailablePaymentMethodAction`.
+- **Config-Speicherung (JSON):** pro Tenant auf `available_payment_methods.configuration`, pro Event auf dem Pivot
+  `event_payment_methods.configuration`. Beim Zuweisen an ein Event wird die Tenant-Config als **Snapshot kopiert**
+  (Copy-on-Assign, spätere Tenant-Änderungen wirken NICHT nach). Sync erfolgt differenziell in
+  `SetPaymentMethodsCommand` (Endpoint `/api/v1/event/details/{event}/payment-methods`, ausgelöst aus dem
+  „Teilnahmegebühren"-Bereich).
+- **`PaymentMethod` ist nur eine Fassade:** `PaymentMethod::optionsFor/participantOptionsFor/requiredOptionKeys/`
+  `sanitizeConfiguration/isConfigurationComplete/defaults()` delegieren an die Registry. Bestehende Aufrufstellen
+  bleiben stabil.
+- **Zahlungsauswahl im Anmeldeprozess:** Nach „Allergien" wählt der/die Teilnehmer\*in aus den **aktiven**
+  Event-Methoden (`StepPaymentMethod.vue`); bei Beitrag 0 € wird der Schritt übersprungen. Die Wahl landet in
+  `event_participants.payment_method`, die Eingaben in `payment_options`. Der Überweisungs-Bestätigungstext in der
+  Zusammenfassung ist eine Admin-Config-Option `summary_confirmation_text` (`{amount}`-Platzhalter) und erscheint nur
+  bei
+  `PAYMENT_ACCOUNT_TRANSACTION`.
+- **`PaymentStatus`** ist ein DB-gestütztes Enumerations-Model (`app/Enumerations/PaymentStatus.php`, Tabelle
+  `payment_status`, geseedet in `ProductionDataSeeder`), analog zu `InvoiceStatus`. Reine Steuersignale (z.B. Redirect)
+  gehören NICHT ins Status-Vokabular, sondern als transiente Felder aufs Response-DTO.
+- `doPayment()` und `createInvoice()` sind aktuell **Stubs** (nur Struktur/DTOs vorhanden). `createInvoice()` ist als
+  Template-Method angelegt: gemeinsamer Rumpf in der Basis, `invoiceClosingStatement()` je Modul.
+
+## Zahlart-spezifisches Verhalten → Fähigkeits-Interfaces (Interface Segregation)
+
+Verhalten, das **nur eine** Zahlungsart hat, gehört **nicht** auf `EventPaymentModule` und **nicht** auf das generische
+`EventParticipant`-Model, sondern in ein schmales Fähigkeits-Interface, das nur das betreffende Modul implementiert.
+Aufrufer prüfen per `instanceof`.
+
+Beispiel GiroCode (nur Überweisung):
+
+- `ProvidesGiroCode::giroCode(EventParticipant, array $configuration): ?string` — implementiert **nur** von
+  `AccountTransferPaymentModule`.
+- Aufrufer (`GiroCodeGetController`, `EventSignUpSuccessfullMail`, `ParticipantPaymentMissingPaymentMail`) lösen inline
+  auf:
+  ```php
+  $module = $participant->paymentModule();
+  $binary = $module instanceof ProvidesGiroCode
+      ? $module->giroCode($participant, $participant->paymentConfiguration())
+      : null;
+  ```
+- Künftige Verfahren würden analog eigene Fähigkeiten mitbringen (z.B. `ProvidesRedirect` für PayPal,
+  `ProvidesMandate` für SEPA-Lastschrift) — **erst modellieren, wenn tatsächlich gebraucht.**
+
+## Anmelde-Zusammenfassung / Mail-Anzeige
+
+- `registrationSummary(RegistrationSummaryRequest): RegistrationSummaryResponse` liefert den zahlungsspezifischen
+  Anzeige-Block **fertig als HTML** (`hasPaymentInformation` + `html`). Jedes Modul rendert seinen Block über
+  eigene Blade-Templates unter `resources/views/payment-modules/{modul}/{web,mail}.blade.php` (Überweisung:
+  `account-transfer/`, Barzahlung: `undefined/` — Rahmen um den konfigurierten richtext). Die Render-Stellen geben
+  nur noch `v-html` / `{!! !!}` aus — **keine** zahlart-spezifische Logik im Frontend/Blade.
+- **Render-Kontext:** `RegistrationSummaryRequest` trägt einen `RegistrationRenderContext` (`Web`/`Mail`). Das Modul
+  wählt darüber (a) ein **medien-gerechtes Template** — `resources/views/payment-modules/{modul}/{web,mail}.blade.php`
+  (Web: SPA-Klassen `form-table`/`link`; Mail: E-Mail-taugliche Inline-Styles) und (b) die GiroCode-Bildquelle —
+  Web: `/print-girocode/{token}` (sessionlos, lazy), Mail: `cid:girocode.png` (inline via `$message->embedData(...)`,
+  bereitgestellt im dünnen Wrapper `emails/subparts/payment.blade.php`).
+  Hinweis: Das Web-Template darf globale (un-scoped) SPA-Klassen nutzen, da Vue-`scoped`-Styles nicht auf `v-html`
+  greifen.
+- Zugang über das Teilnehmer-Model: `EventParticipant::paymentModule()`, `paymentConfiguration()` (eager-load-fähig über
+  `->with('event.paymentMethods')`, kein statischer Cache), `paymentSummary(RegistrationRenderContext)`.
+- Konsumiert von `EventParticipantResource` (`paymentSummary` = `{hasPaymentInformation, html}`, Web-Kontext),
+  `SubmitSuccess.vue`, den Mails (`EventSignUpSuccessfullMail`/`ParticipantPaymentMissingPaymentMail` rufen
+  `paymentSummary(Mail)`), sowie `signup_complete`/`missing_amount` (nur umrahmende Prosa, gegated auf
+  `hasPaymentInformation`).
+
+## Neues Zahlungsmodul hinzufügen
+
+1. Klasse unter `Modules/` anlegen, `extends AbstractEventPaymentModule`; `slug()`, `defaultName()`, `getOptions()`
+   implementieren; `defaultConfiguration()` (z.B. Default-`icon`) sowie
+   `registrationSummary()`/`doPayment()`/`createInvoice()` überschreiben, wo nötig.
+2. Zahlart-spezifische Extras als **eigenes Fähigkeits-Interface** (nicht ins Core-Interface).
+3. In `EventPaymentModuleRegistry::MODULES` eintragen. `PaymentMethod::create(['slug' => …])` wird dann automatisch über
+   `ProductionDataSeeder` (iteriert `EventPaymentModuleRegistry::slugs()`) geseedet.
+4. Slug-Konstante bei Bedarf auf `PaymentMethod` ergänzen.
+
+## Datenübernahme
+
+`storage/app/2026_08_05_backfill_payment_method_configuration.sql` überführt einmalig Bestands-IBAN-Daten (Tenant/Event)
+**und** die Default-Symbole in die Modul-Config (idempotenter JSON-Merge, nichts wird überschrieben). Bei
+Live-Inbetriebnahme einmal gegen die Produktionsdatenbank ausführen — ersetzt das ältere PHP-Skript
+`sync_payment_bank_data.php`.
+
+## Tests
+
+`tests/Unit/PaymentMethodOptionsTest`, `tests/Unit/EventPaymentModuleRegistryTest`,
+`tests/Unit/RegistrationSummaryTest`, `tests/Feature/PaymentMethodConfigurationTest`,
+`tests/Feature/EventParticipantPaymentSummaryTest`. Ausführung im Container (PHP 8.5):
+`docker exec mareike-mareike-app-1 php artisan test`.

app/EventPaymentModules/DTO/CreateInvoiceRequest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\EventPaymentModules\DTO;
+
+use App\Models\Event;
+use App\Models\EventParticipant;
+use App\ValueObjects\Amount;
+
+/**
+ * Eingabe für {@see \App\EventPaymentModules\EventPaymentModule::createInvoice()}.
+ * Von allen Modulen geteilt.
+ */
+final class CreateInvoiceRequest
+{
+    /**
+     * @param array<string, mixed> $configuration Aufgelöste (pro-Event-)Konfiguration des Moduls.
+     */
+    public function __construct(
+        public readonly Event $event,
+        public readonly EventParticipant $participant,
+        public readonly Amount $amount,
+        public readonly array $configuration = [],
+    ) {
+    }
+}

app/EventPaymentModules/DTO/CreateInvoiceResponse.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\EventPaymentModules\DTO;
+
+/**
+ * Ausgabe von {@see \App\EventPaymentModules\EventPaymentModule::createInvoice()}.
+ *
+ * Der gemeinsame Rechnungs-Rumpf (Betrag, Leistung, ...) wird von der Basisklasse befüllt,
+ * $closingStatement ist der je Modul variierende Schlusssatz
+ * ("Bitte überweise bis ..." / "wird abgebucht ..." / "wurde per PayPal beglichen").
+ */
+final class CreateInvoiceResponse
+{
+    public bool $success = false;
+
+    /** @var array<int, array<string, mixed>> Gemeinsame Rechnungspositionen (Rumpf). */
+    public array $lines = [];
+
+    public ?string $closingStatement = null;
+    public ?string $message = null;
+}

app/EventPaymentModules/DTO/DoPaymentRequest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\EventPaymentModules\DTO;
+
+use App\Models\Event;
+use App\Models\EventParticipant;
+use App\ValueObjects\Amount;
+
+/**
+ * Eingabe für {@see \App\EventPaymentModules\EventPaymentModule::doPayment()}.
+ * Von allen Modulen geteilt.
+ */
+final class DoPaymentRequest
+{
+    /**
+     * @param array<string, mixed> $configuration Aufgelöste (pro-Event-)Konfiguration des Moduls.
+     */
+    public function __construct(
+        public readonly Event $event,
+        public readonly EventParticipant $participant,
+        public readonly Amount $amount,
+        public readonly array $configuration = [],
+    ) {
+    }
+}

app/EventPaymentModules/DTO/DoPaymentResponse.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\EventPaymentModules\DTO;
+
+use App\Enumerations\PaymentStatus;
+
+/**
+ * Ausgabe von {@see \App\EventPaymentModules\EventPaymentModule::doPayment()}.
+ * Von allen Modulen geteilt -- jedes Modul befüllt nur die für es relevanten Felder.
+ *
+ * $status ist ein Lebenszyklus-Status (PaymentStatus-Slug, DB-gestützt). Reine Steuersignale
+ * wie ein Redirect bleiben transiente Felder (redirectUrl), nicht Teil des Status-Vokabulars.
+ */
+final class DoPaymentResponse
+{
+    public bool $success = false;
+    public string $status = PaymentStatus::PAYMENT_STATUS_PENDING;
+    public ?string $redirectUrl = null;
+    public ?\DateTimeImmutable $scheduledFor = null;
+    public ?string $reference = null;
+    public ?string $message = null;
+}

app/EventPaymentModules/DTO/RegistrationRenderContext.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace App\EventPaymentModules\DTO;
+
+/**
+ * Render-Kontext der Anmelde-Zusammenfassung. Steuert die kontextabhängige Einbettung des GiroCodes:
+ * im Web über den Endpoint, in der Mail über eine inline-CID.
+ */
+enum RegistrationRenderContext
+{
+    case Web;
+    case Mail;
+}

app/EventPaymentModules/DTO/RegistrationSummaryRequest.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\EventPaymentModules\DTO;
+
+use App\Models\EventParticipant;
+
+/**
+ * Eingabe für {@see \App\EventPaymentModules\EventPaymentModule::registrationSummary()}.
+ *
+ * Anker ist der (bereits erstellte) Teilnehmer -- daraus leiten die Module Event, Betrag/Restbetrag
+ * und Verwendungszweck ab. $configuration ist die aufgelöste pro-Event-Config des Zahlungsmoduls,
+ * $context steuert die kontextabhängige Ausgabe (z.B. GiroCode-Einbettung Web vs. Mail).
+ */
+final class RegistrationSummaryRequest
+{
+    /**
+     * @param array<string, mixed> $configuration
+     */
+    public function __construct(
+        public readonly EventParticipant $participant,
+        public readonly array $configuration = [],
+        public readonly RegistrationRenderContext $context = RegistrationRenderContext::Web,
+    ) {
+    }
+}

app/EventPaymentModules/DTO/RegistrationSummaryResponse.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\EventPaymentModules\DTO;
+
+/**
+ * Ausgabe von {@see \App\EventPaymentModules\EventPaymentModule::registrationSummary()}.
+ *
+ * Das Modul erzeugt seinen Zahlungs-Block vollständig als HTML; die Render-Stellen (Anmeldeabschluss,
+ * Mails) geben ihn nur noch per `v-html` / `{!! !!}` aus.
+ */
+final class RegistrationSummaryResponse
+{
+    /** Gibt es überhaupt einen Zahlungs-Block darzustellen? */
+    public bool $hasPaymentInformation = false;
+
+    /** Fertig gerenderter HTML-Block der Zahlungsinformationen. */
+    public string $html = '';
+}

app/EventPaymentModules/EventPaymentModule.php

@@ -0,0 +1,71 @@
+<?php
+
+namespace App\EventPaymentModules;
+
+use App\EventPaymentModules\DTO\CreateInvoiceRequest;
+use App\EventPaymentModules\DTO\CreateInvoiceResponse;
+use App\EventPaymentModules\DTO\DoPaymentRequest;
+use App\EventPaymentModules\DTO\DoPaymentResponse;
+use App\EventPaymentModules\DTO\RegistrationSummaryRequest;
+use App\EventPaymentModules\DTO\RegistrationSummaryResponse;
+
+/**
+ * Vertrag eines Zahlungsmoduls. Jede Zahlungsart (Überweisung, künftig SEPA-Lastschrift, PayPal, ...)
+ * kapselt ihr Verhalten in einer eigenen Implementierung. Aufgelöst wird ein Modul über seinen Slug
+ * via {@see EventPaymentModuleRegistry}.
+ *
+ * Die operativen Methoden (doPayment/createInvoice/registrationSummary) arbeiten mit geteilten
+ * Request/Response-DTOs -- das Modul stellt die polymorphe "Command"-Logik; schwere Arbeit
+ * (PayPal-API, SEPA-XML) wird später an reguläre Domain-Actions delegiert.
+ */
+interface EventPaymentModule
+{
+    /** Eindeutiger Slug der Zahlungsart (entspricht payment_methods.slug). */
+    public static function slug(): string;
+
+    /** Standard-Anzeigename beim Anlegen der Tenant-Instanz. */
+    public function defaultName(): string;
+
+    /** Standard-Beschreibung beim Anlegen der Tenant-Instanz. */
+    public function defaultDescription(): ?string;
+
+    /**
+     * Standard-Konfiguration beim Anlegen der Tenant-Instanz (z.B. Default-Symbol). Standard: leer.
+     *
+     * @return array<string, mixed>
+     */
+    public function defaultConfiguration(): array;
+
+    /**
+     * Admin-Options-Schema dieses Moduls (welche Konfigurationsfelder der/die Veranstalter\*in pflegt).
+     *
+     * @return array<int, array{name: string, label: string, type: string, required: bool}>
+     */
+    public function getOptions(): array;
+
+    /**
+     * Teilnehmer-Eingaben, die diese Zahlungsart beim Anmelden abfragt (payer-seitig; Standard: keine).
+     *
+     * @return array<int, array{name: string, label: string, type: string, required: bool}>
+     */
+    public function getParticipantOptions(): array;
+
+    /**
+     * Liefert den zahlungsspezifischen Teil der Anmelde-Zusammenfassung.
+     * (In dieser Iteration nur als Stub vorhanden.)
+     */
+    public function registrationSummary(RegistrationSummaryRequest $request): RegistrationSummaryResponse;
+
+    /**
+     * Stößt die Zahlung an (bzw. beschreibt, was zu tun ist -- z.B. Redirect, Lastschrift, manuelle Überweisung).
+     * (In dieser Iteration nur als Stub vorhanden.)
+     */
+    public function doPayment(DoPaymentRequest $request): DoPaymentResponse;
+
+    /**
+     * Erzeugt die Rechnung/Zahlungsaufforderung. Der gemeinsame Rumpf kommt aus der Basisklasse,
+     * nur der Schlusssatz variiert je Modul.
+     * (In dieser Iteration nur als Stub vorhanden.)
+     */
+    public function createInvoice(CreateInvoiceRequest $request): CreateInvoiceResponse;
+}

app/EventPaymentModules/EventPaymentModuleRegistry.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\EventPaymentModules;
+
+use App\EventPaymentModules\Modules\AccountTransferPaymentModule;
+use App\EventPaymentModules\Modules\UndefinedPaymentModule;
+
+/**
+ * Zentrale Auflösung Slug -> Zahlungsmodul. Neue Zahlungsarten werden hier eingetragen.
+ * Bewusst statisch + manuelle Instanziierung (kein Container-Binding), passend zum Projektstil.
+ */
+class EventPaymentModuleRegistry
+{
+    /**
+     * Alle registrierten Modul-Klassen. Reihenfolge bestimmt u.a. die Seed-Reihenfolge.
+     *
+     * @var array<int, class-string<EventPaymentModule>>
+     */
+    private const MODULES = [
+        AccountTransferPaymentModule::class,
+        UndefinedPaymentModule::class,
+    ];
+
+    /** @var array<string, EventPaymentModule>|null Lazy gecachte Instanzen (slug => Modul). */
+    private static ?array $instances = null;
+
+    /**
+     * @return array<string, EventPaymentModule>
+     */
+    public static function all(): array
+    {
+        if (self::$instances === null) {
+            self::$instances = [];
+            foreach (self::MODULES as $moduleClass) {
+                self::$instances[$moduleClass::slug()] = new $moduleClass();
+            }
+        }
+
+        return self::$instances;
+    }
+
+    public static function forSlug(string $slug): ?EventPaymentModule
+    {
+        return self::all()[$slug] ?? null;
+    }
+
+    /**
+     * @return array<int, string>
+     */
+    public static function slugs(): array
+    {
+        return array_keys(self::all());
+    }
+}

app/EventPaymentModules/Modules/AccountTransferPaymentModule.php

@@ -0,0 +1,112 @@
+<?php
+
+namespace App\EventPaymentModules\Modules;
+
+use App\EventPaymentModules\AbstractEventPaymentModule;
+use App\EventPaymentModules\DTO\CreateInvoiceRequest;
+use App\EventPaymentModules\DTO\RegistrationRenderContext;
+use App\EventPaymentModules\DTO\RegistrationSummaryRequest;
+use App\EventPaymentModules\DTO\RegistrationSummaryResponse;
+use App\EventPaymentModules\ProvidesGiroCode;
+use App\Models\EventParticipant;
+use App\Models\PaymentMethod;
+use App\Providers\GiroCodeProvider;
+
+/**
+ * Überweisung auf das Veranstaltungskonto -- die Zahlung erfolgt manuell durch die teilnehmende Person.
+ */
+class AccountTransferPaymentModule extends AbstractEventPaymentModule implements ProvidesGiroCode
+{
+    public static function slug(): string
+    {
+        return PaymentMethod::PAYMENT_ACCOUNT_TRANSACTION;
+    }
+
+    public function defaultName(): string
+    {
+        return 'Überweisung auf Veranstaltungskonto';
+    }
+
+    public function defaultConfiguration(): array
+    {
+        return ['icon' => 'building-columns'];
+    }
+
+    public function getOptions(): array
+    {
+        return [
+            ['name' => 'account_owner', 'label' => 'Kontoinhaber', 'type' => 'string', 'required' => true],
+            ['name' => 'iban', 'label' => 'IBAN', 'type' => 'string', 'required' => true],
+            ['name' => 'bic', 'label' => 'BIC', 'type' => 'string', 'required' => false],
+            ['name' => 'summary_confirmation_text', 'label' => 'Bestätigung durch Teilnehmende (Zusammenfassung, {amount} als Platzhalter)', 'type' => 'string', 'required' => false],
+            ['name' => 'icon', 'label' => 'Symbol', 'type' => 'icon', 'required' => false],
+        ];
+    }
+
+    public function registrationSummary(RegistrationSummaryRequest $request): RegistrationSummaryResponse
+    {
+        $participant = $request->participant;
+        $config = $request->configuration;
+
+        $amountLeft = clone $participant->amount;
+        if ($participant->amount_paid !== null) {
+            $amountLeft->subtractAmount($participant->amount_paid);
+        }
+
+        $hasPaymentInformation = $amountLeft->getAmount() > 0;
+
+        // GiroCode nur bei offenem Betrag; Bildquelle je Render-Kontext (Web-Endpoint vs. Mail-CID).
+        $giroCodeSrc = null;
+        if ($hasPaymentInformation) {
+            $giroCodeSrc = $request->context === RegistrationRenderContext::Mail
+                ? 'cid:girocode.png'
+                : '/print-girocode/' . $participant->identifier;
+        }
+
+        // Medien-gerechtes Template je Render-Kontext (Web: SPA-Klassen, Mail: E-Mail-tauglich).
+        $view = $request->context === RegistrationRenderContext::Mail
+            ? 'payment-modules.account-transfer.mail'
+            : 'payment-modules.account-transfer.web';
+
+        $response = new RegistrationSummaryResponse();
+        $response->hasPaymentInformation = $hasPaymentInformation;
+        $response->html = view($view, [
+            'accountOwner' => (string)($config['account_owner'] ?? ''),
+            'iban' => (string)($config['iban'] ?? ''),
+            'paymentPurpose' => (string)$participant->payment_purpose,
+            'amount' => $amountLeft->toString(),
+            'giroCodeSrc' => $giroCodeSrc,
+            'reminderUrl' => url('/api/v1/event/participant/' . $participant->identifier . '/ical-payment'),
+            'paymentDeadline' => $participant->event?->registration_final_end?->format('d.m.Y'),
+        ])->render();
+
+        return $response;
+    }
+
+    public function giroCode(EventParticipant $participant, array $configuration): ?string
+    {
+        $amountLeft = clone $participant->amount;
+        if ($participant->amount_paid !== null) {
+            $amountLeft->subtractAmount($participant->amount_paid);
+        }
+
+        if ($amountLeft->getAmount() <= 0) {
+            return null;
+        }
+
+        $provider = new GiroCodeProvider(
+            (string)($configuration['account_owner'] ?? ''),
+            (string)($configuration['iban'] ?? ''),
+            $amountLeft->getAmount(),
+            (string)$participant->payment_purpose,
+        );
+
+        return (string)$provider->create();
+    }
+
+    protected function invoiceClosingStatement(CreateInvoiceRequest $request): string
+    {
+        // TODO: In einer Folge-Iteration ausformulieren (z.B. "Bitte überweise bis zum ... auf IBAN ...").
+        return '';
+    }
+}

app/EventPaymentModules/Modules/UndefinedPaymentModule.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace App\EventPaymentModules\Modules;
+
+use App\EventPaymentModules\AbstractEventPaymentModule;
+use App\EventPaymentModules\DTO\CreateInvoiceRequest;
+use App\EventPaymentModules\DTO\RegistrationRenderContext;
+use App\EventPaymentModules\DTO\RegistrationSummaryRequest;
+use App\EventPaymentModules\DTO\RegistrationSummaryResponse;
+use App\Models\PaymentMethod;
+
+/**
+ * Sonstiges (Barzahlung, Zahlung vor Ort) -- die anzuzeigende Zahlungsinformation ist nutzerdefiniert
+ * (mehrzeiliger Freitext) und wird als Option gepflegt.
+ */
+class UndefinedPaymentModule extends AbstractEventPaymentModule
+{
+    public static function slug(): string
+    {
+        return PaymentMethod::PAYMENT_NOT_DEFINED;
+    }
+
+    public function defaultName(): string
+    {
+        return 'Sonstiges (Barzahlung, Zahlung vor Ort)';
+    }
+
+    public function defaultConfiguration(): array
+    {
+        return ['icon' => 'coins'];
+    }
+
+    public function getOptions(): array
+    {
+        return [
+            ['name' => 'payment_information', 'label' => 'Zahlungsinformationen', 'type' => 'richtext', 'required' => true, 'hint' => 'Dieser Text wird der teilnehmenden Person am Ende der Anmeldung und in der Bestätigungs-E-Mail angezeigt.'],
+            ['name' => 'icon', 'label' => 'Symbol', 'type' => 'icon', 'required' => false],
+        ];
+    }
+
+    public function registrationSummary(RegistrationSummaryRequest $request): RegistrationSummaryResponse
+    {
+        $paymentInformation = (string)($request->configuration['payment_information'] ?? '');
+
+        $response = new RegistrationSummaryResponse();
+        $response->hasPaymentInformation = trim($paymentInformation) !== '';
+
+        if ($response->hasPaymentInformation) {
+            // Medien-gerechtes Template je Render-Kontext (Web: SPA, Mail: E-Mail-tauglich).
+            $view = $request->context === RegistrationRenderContext::Mail
+                ? 'payment-modules.undefined.mail'
+                : 'payment-modules.undefined.web';
+
+            $response->html = view($view, ['paymentInformation' => $paymentInformation])->render();
+        }
+
+        return $response;
+    }
+
+    protected function invoiceClosingStatement(CreateInvoiceRequest $request): string
+    {
+        return '';
+    }
+}

app/EventPaymentModules/ProvidesGiroCode.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\EventPaymentModules;
+
+use App\Models\EventParticipant;
+
+/**
+ * Fähigkeits-Interface (Interface Segregation): Nur Zahlungsarten mit einem GiroCode (SEPA-QR)
+ * implementieren dies -- aktuell ausschließlich die Überweisung. Das Core-Interface
+ * {@see EventPaymentModule} bleibt davon unberührt.
+ */
+interface ProvidesGiroCode
+{
+    /**
+     * Erzeugt den GiroCode (SEPA-QR) als PNG-Binary -- oder null, wenn (z.B. mangels offenem Betrag)
+     * kein GiroCode angeboten wird.
+     *
+     * @param array<string, mixed> $configuration
+     */
+    public function giroCode(EventParticipant $participant, array $configuration): ?string;
+}

app/Http/Controllers/GiroCodeGetController.php

@@ -2,8 +2,8 @@
 
 namespace App\Http\Controllers;
 
+use App\EventPaymentModules\ProvidesGiroCode;
 use App\Models\EventParticipant;
-use App\Providers\GiroCodeProvider;
 use Illuminate\Http\Request;
 
 class GiroCodeGetController {
@@ -14,18 +14,16 @@ class GiroCodeGetController {
             return response()->json(['message' => 'Participant not found'], 404);
         }
 
-        $amount = $participant->amount;
-        $amount->subtractAmount($participant->amount_paid);
+        // Die GiroCode-Erzeugung gehört zum Zahlungsmodul; ohne diese Fähigkeit (z.B. Barzahlung) -> 404.
+        $module = $participant->paymentModule();
+        $girocode = $module instanceof ProvidesGiroCode
+            ? $module->giroCode($participant, $participant->paymentConfiguration())
+            : null;
 
-        $girocodeProvider = new GiroCodeProvider(
-            $participant->event()->first()->account_owner,
-            $participant->event()->first()->account_iban,
-            $participant->amount->getAmount(),
-            $participant->payment_purpose
-        );
+        if ($girocode === null) {
+            return response()->json(['message' => 'No giro code for this payment method'], 404);
+        }
 
-        return response($girocodeProvider->create(),    200,
-            ['Content-Type' => 'image/png']
-        );
+        return response($girocode, 200, ['Content-Type' => 'image/png']);
     }
 }

app/Installer/ProductionDataSeeder.php

@@ -11,9 +11,12 @@ use App\Enumerations\InvoiceStatus;
 use App\Enumerations\InvoiceType;
 use App\Enumerations\ParticipationFeeType;
 use App\Enumerations\ParticipationType;
+use App\Enumerations\PaymentStatus;
 use App\Enumerations\SwimmingPermission;
 use App\Enumerations\UserRole;
+use App\EventPaymentModules\EventPaymentModuleRegistry;
 use App\Models\CronTask;
+use App\Models\PaymentMethod;
 use App\Models\Tenant;
 
 class ProductionDataSeeder {
@@ -28,6 +31,21 @@ class ProductionDataSeeder {
         $this->installParticipationFeeTypes();
         $this->installParticipationTypes();
         $this->installEfzStatus();
+        $this->installPaymentMethods();
+        $this->installPaymentStatus();
+    }
+
+    private function installPaymentStatus() {
+        PaymentStatus::create(['slug' => PaymentStatus::PAYMENT_STATUS_PENDING]);
+        PaymentStatus::create(['slug' => PaymentStatus::PAYMENT_STATUS_SCHEDULED]);
+        PaymentStatus::create(['slug' => PaymentStatus::PAYMENT_STATUS_PAID]);
+        PaymentStatus::create(['slug' => PaymentStatus::PAYMENT_STATUS_FAILED]);
+    }
+
+    private function installPaymentMethods() {
+        foreach (EventPaymentModuleRegistry::slugs() as $slug) {
+            PaymentMethod::create(['slug' => $slug]);
+        }
     }
 
     private function installEfzStatus() {

app/Mail/AdminMails/CostUnitInvalidBillingDeadlineMail.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Mail\AdminMails;
+
+use Illuminate\Mail\Mailable;
+use Illuminate\Mail\Mailables\Attachment;
+use Illuminate\Mail\Mailables\Content;
+use Illuminate\Mail\Mailables\Envelope;
+
+class CostUnitInvalidBillingDeadlineMail extends Mailable
+{
+    public function __construct(
+        private int|string $costUnitId,
+        private ?string    $costUnitName,
+        private ?string    $invalidBillingDeadline,
+    )
+    {
+        //
+    }
+
+    /**
+     * Get the message envelope.
+     */
+    public function envelope(): Envelope
+    {
+        return new Envelope(
+            subject: sprintf('Ungültiges Abrechnungsende für Kostenstelle #%s', $this->costUnitId),
+        );
+    }
+
+    /**
+     * Get the message content definition.
+     */
+    public function content(): Content
+    {
+        return new Content(
+            view: 'emails.admin.cost_unit_invalid_billing_deadline',
+            with: [
+                'costUnitId' => $this->costUnitId,
+                'costUnitName' => $this->costUnitName,
+                'invalidBillingDeadline' => $this->invalidBillingDeadline,
+            ],
+        );
+    }
+
+    /**
+     * Get the attachments for the message.
+     *
+     * @return array<int, Attachment>
+     */
+    public function attachments(): array
+    {
+        return [];
+    }
+}

app/Mail/EventReportMails/PaymentMethodsExhaustedMail.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Mail\EventReportMails;
+
+use App\Models\Event;
+use Illuminate\Mail\Mailable;
+use Illuminate\Mail\Mailables\Content;
+use Illuminate\Mail\Mailables\Envelope;
+
+class PaymentMethodsExhaustedMail extends Mailable
+{
+    public function __construct(
+        private Event $event,
+    )
+    {
+        //
+    }
+
+    /**
+     * Get the message envelope.
+     */
+    public function envelope(): Envelope
+    {
+        $subject = sprintf(
+            'Anmeldung deaktiviert – keine Zahlungsmethode verfügbar für %1$s',
+            $this->event->name
+        );
+
+        return new Envelope(
+            subject: $subject,
+        );
+    }
+
+    /**
+     * Get the message content definition.
+     */
+    public function content(): Content
+    {
+        return new Content(
+            view: 'emails.events.payment_methods_exhausted',
+            with: [
+                'eventTitle' => $this->event->name,
+            ],
+        );
+    }
+}

app/Mail/ParticipantParticipationMails/EventSignUpSuccessfullMail.php

@@ -8,6 +8,8 @@ use App\Domains\Event\Actions\GenerateIcal\GenerateIcalResponse;
 use App\Domains\Event\Actions\GenerateIcalForDeadline\GenerateIcalForDeadlineCommand;
 use App\Domains\Event\Actions\GenerateIcalForDeadline\GenerateIcalForDeadlineRequest;
 use App\Domains\Event\Actions\GenerateIcalForDeadline\GenerateIcalForDeadlineResponse;
+use App\EventPaymentModules\DTO\RegistrationRenderContext;
+use App\EventPaymentModules\ProvidesGiroCode;
 use App\Models\EventParticipant;
 use Illuminate\Bus\Queueable;
 use Illuminate\Http\Request;
@@ -62,13 +64,13 @@ class EventSignUpSuccessfullMail extends Mailable
         $event = $this->participant->event()->first()->toResource()->toArray(new Request());
         $participant = $this->participant->toResource()->toArray(new Request());
 
-        $girocodeProvider = new \App\Providers\GiroCodeProvider(
-            $event['accountOwner'],
-            $event['accountIban'],
-            (float) $participant['amount_left_value'],
-            $participant['payment_purpose']
-        );
-        $girocodeBinary = (string)$girocodeProvider->create();
+        $module = $this->participant->paymentModule();
+        $girocodeBinary = $module instanceof ProvidesGiroCode
+            ? $module->giroCode($this->participant, $this->participant->paymentConfiguration())
+            : null;
+
+        // Zahlungs-Block im Mail-Kontext erzeugen (GiroCode als cid: statt Web-Endpoint).
+        $paymentSummary = $this->participant->paymentSummary(RegistrationRenderContext::Mail);
 
         $participationIcal = $this->getParticipationIcal();
         $deadlineIcal = $this->getDeadlineIcal();
@@ -85,10 +87,7 @@ class EventSignUpSuccessfullMail extends Mailable
                 'departure' => $participant['departure'],
                 'amount' => $participant['amount_left_string'],
                 'paymentFinalDate' => $event['registrationFinalEnd']['formatted'],
-                'paymentRequired' => $participant['needs_payment'],
-                'accountOwner' => $event['accountOwner'],
-                'accountIban' => $event['accountIban'],
-                'paymentPurpose' => $participant['payment_purpose'],
+                'paymentSummary' => ['hasPaymentInformation' => $paymentSummary->hasPaymentInformation, 'html' => $paymentSummary->html],
                 'girocodeBinary' => $girocodeBinary,
                 'efzStatus' => $participant['efz_status'],
                 'participationIcalFilename' => $participationIcal->filename,

app/Mail/ParticipantPaymentMails/ParticipantPaymentMissingPaymentMail.php

@@ -2,6 +2,8 @@
 
 namespace App\Mail\ParticipantPaymentMails;
 
+use App\EventPaymentModules\DTO\RegistrationRenderContext;
+use App\EventPaymentModules\ProvidesGiroCode;
 use App\Models\EventParticipant;
 use Illuminate\Http\Request;
 use Illuminate\Mail\Mailable;
@@ -45,13 +47,13 @@ class ParticipantPaymentMissingPaymentMail extends Mailable
         $event = $this->participant->event()->first()->toResource()->toArray(new Request());
         $participant = $this->participant->toResource()->toArray(new Request());
 
-        $girocodeProvider = new \App\Providers\GiroCodeProvider(
-            $event['accountOwner'],
-            $event['accountIban'],
-            (float) $participant['amount_left_value'],
-            $participant['payment_purpose']
-        );
-        $girocodeBinary = (string)$girocodeProvider->create();
+        $module = $this->participant->paymentModule();
+        $girocodeBinary = $module instanceof ProvidesGiroCode
+            ? $module->giroCode($this->participant, $this->participant->paymentConfiguration())
+            : null;
+
+        // Zahlungs-Block im Mail-Kontext erzeugen (GiroCode als cid: statt Web-Endpoint).
+        $paymentSummary = $this->participant->paymentSummary(RegistrationRenderContext::Mail);
 
         return new Content(
             view: 'emails.participantPayments.missing_amount',
@@ -64,10 +66,7 @@ class ParticipantPaymentMissingPaymentMail extends Mailable
                 'departure' => $participant['departure'],
                 'amount' => $participant['amount_left_string'],
                 'paymentFinalDate' => $event['registrationFinalEnd']['formatted'],
-                'paymentRequired' => $participant['needs_payment'],
-                'accountOwner' => $event['accountOwner'],
-                'accountIban' => $event['accountIban'],
-                'paymentPurpose' => $participant['payment_purpose'],
+                'paymentSummary' => ['hasPaymentInformation' => $paymentSummary->hasPaymentInformation, 'html' => $paymentSummary->html],
                 'girocodeBinary' => $girocodeBinary,
             ],
         );

app/Models/AvailablePaymentMethod.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace App\Models;
+
+use App\Scopes\InstancedModel;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+
+/**
+ * @property int $id
+ * @property string $tenant
+ * @property string $slug
+ * @property string $name
+ * @property ?string $description
+ * @property bool $active
+ * @property ?array $configuration
+ */
+class AvailablePaymentMethod extends InstancedModel
+{
+    protected $table = 'available_payment_methods';
+
+    protected $fillable = [
+        'tenant',
+        'slug',
+        'name',
+        'description',
+        'active',
+        'configuration',
+    ];
+
+    protected $casts = [
+        'active' => 'boolean',
+        'configuration' => 'array',
+    ];
+
+    public function paymentMethod(): BelongsTo
+    {
+        return $this->belongsTo(PaymentMethod::class, 'slug', 'slug');
+    }
+
+    /**
+     * Sind alle Pflicht-Optionen dieses Moduls (siehe Options-Schema des Zahlungsmoduls) befüllt?
+     */
+    public function isComplete(): bool
+    {
+        return PaymentMethod::isConfigurationComplete($this->slug, $this->configuration ?? []);
+    }
+
+    public function events(): BelongsToMany
+    {
+        // Pivot verknüpft über den Slug -- Event::paymentMethods() greift daher automatisch nur
+        // auf Events des aktuell gebundenen Tenants zu (SiteScope auf Event + AvailablePaymentMethod).
+        return $this->belongsToMany(Event::class, 'event_payment_methods', 'slug', 'event_id', 'slug', 'id')->withTimestamps();
+    }
+}

app/Models/Event.php

@@ -7,14 +7,12 @@ use App\Casts\AmountCast;
 use App\Enumerations\EatingHabit;
 use App\Enumerations\ParticipationFeeType;
 use App\RelationModels\EventParticipationFee;
-use App\Resources\EventResource;
-use App\Scopes\CommonModel;
+use App\RelationModels\EventPaymentMethods;
 use App\Scopes\InstancedModel;
 use DateTime;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\BelongsToMany;
 use Illuminate\Database\Eloquent\Relations\HasMany;
-use Illuminate\Http\Resources\Json\JsonResource;
 
 /**
  * @property string $tenant
@@ -84,6 +82,13 @@ class Event extends InstancedModel
         'support_flat',
         'alcoholics_age',
         'archived',
+        'tax_liable',
+        'vat_rate',
+        'vat_pricing_mode',
+        'tax_exemption_reason',
+        'tax_exemption_note',
+        'participation_options',
+        'addons',
 
     ];
 
@@ -108,6 +113,12 @@ class Event extends InstancedModel
         'total_max_amount' => AmountCast::class,
 
         'sibling_reduction' => 'boolean',
+
+        'tax_liable' => 'boolean',
+        'vat_rate' => 'integer',
+
+        'participation_options' => 'array',
+        'addons' => 'array',
     ];
 
     public function tenant(): BelongsTo
@@ -153,6 +164,16 @@ class Event extends InstancedModel
         return $this->belongsToMany(EatingHabit::class, 'event_allowed_eating_habits', 'event_id', 'eating_habit_id');
     }
 
+    public function paymentMethods() : BelongsToMany {
+        // Pivot verknüpft über den Slug (payment_methods.slug), nicht über die numerische id
+        // von available_payment_methods -- die tenant-spezifische Instanz wird dadurch implizit
+        // über den globalen SiteScope von AvailablePaymentMethod (gefiltert auf app('tenant')) aufgelöst.
+        return $this->belongsToMany(AvailablePaymentMethod::class, 'event_payment_methods', 'event_id', 'slug', 'id', 'slug')
+            ->using(EventPaymentMethods::class)
+            ->withPivot('configuration')
+            ->withTimestamps();
+    }
+
     public function resetContributingLocalGroups() {
         $this->localGroups()->detach();
         $this->save();
@@ -163,6 +184,11 @@ class Event extends InstancedModel
         $this->save();
     }
 
+    public function resetPaymentMethods() {
+        $this->paymentMethods()->detach();
+        $this->save();
+    }
+
     public function resetMangers() {
         $this->eventManagers()->detach();
         $this->save();

app/Models/EventParticipant.php

@@ -8,8 +8,13 @@ use App\Enumerations\EfzStatus;
 use App\Enumerations\FirstAidPermission;
 use App\Enumerations\ParticipationType;
 use App\Enumerations\SwimmingPermission;
+use App\EventPaymentModules\DTO\RegistrationRenderContext;
+use App\EventPaymentModules\DTO\RegistrationSummaryRequest;
+use App\EventPaymentModules\DTO\RegistrationSummaryResponse;
+use App\EventPaymentModules\EventPaymentModule;
+use App\EventPaymentModules\EventPaymentModuleRegistry;
 use App\Scopes\InstancedModel;
-use Illuminate\Database\Eloquent\Builder;
+use Illuminate\Database\Eloquent\Relations\HasMany;
 
 
 class EventParticipant extends InstancedModel
@@ -64,6 +69,8 @@ class EventParticipant extends InstancedModel
         'amount',
         'amount_paid',
         'payment_purpose',
+        'payment_method',
+        'payment_options',
         'efz_status',
         'unregistered_at',
     ];
@@ -83,6 +90,7 @@ class EventParticipant extends InstancedModel
 
         'amount' => AmountCast::class,
         'amount_paid' => AmountCast::class,
+        'payment_options' => 'array',
     ];
 
     /*
@@ -96,6 +104,18 @@ class EventParticipant extends InstancedModel
         return $this->belongsTo(Event::class);
     }
 
+    /** Gewählte Teilnahmeoptionen (event-spezifische Pflicht-Auswahl) dieser Anmeldung. */
+    public function selectedOptions(): HasMany
+    {
+        return $this->hasMany(EventParticipantOption::class, 'event_participant_id');
+    }
+
+    /** Gebuchte Zusätze (Event-Addons) dieser Anmeldung. */
+    public function selectedAddons(): HasMany
+    {
+        return $this->hasMany(EventParticipantAddon::class, 'event_participant_id');
+    }
+
     public function user()
     {
         return $this->belongsTo(User::class);
@@ -126,6 +146,11 @@ class EventParticipant extends InstancedModel
         return $this->belongsTo(EatingHabit::class, 'eating_habits', 'slug');
     }
 
+    public function paymentMethod()
+    {
+        return $this->belongsTo(\App\Models\PaymentMethod::class, 'payment_method', 'slug');
+    }
+
     public function firstAidPermission()
     {
         return $this->belongsTo(FirstAidPermission::class, 'first_aid_permission', 'slug');
@@ -160,4 +185,47 @@ class EventParticipant extends InstancedModel
         return $this->nickname ?? $this->firstname;
     }
 
+    /*
+    |--------------------------------------------------------------------------
+    | Zahlungsmodul
+    |--------------------------------------------------------------------------
+    */
+
+    /** Das Zahlungsmodul der gewählten Zahlungsart des Teilnehmers. */
+    public function paymentModule(): ?EventPaymentModule
+    {
+        return $this->payment_method !== null
+            ? EventPaymentModuleRegistry::forSlug($this->payment_method)
+            : null;
+    }
+
+    /**
+     * Aufgelöste pro-Event-Konfiguration der gewählten Zahlungsart (event_payment_methods.configuration).
+     *
+     * Nutzt die Relation-Property, damit sie via `->with('event.paymentMethods')` eager geladen und in
+     * Teilnehmerlisten (gleiches Event teilt dieselbe Event-Instanz) ohne N+1 aufgelöst werden kann.
+     *
+     * @return array<string, mixed>
+     */
+    public function paymentConfiguration(): array
+    {
+        if ($this->payment_method === null) {
+            return [];
+        }
+
+        $method = $this->event?->paymentMethods->firstWhere('slug', $this->payment_method);
+
+        return $method?->pivot->configuration ?? [];
+    }
+
+    /** Zahlungs-Zusammenfassung (Anmeldeabschluss/Mail), vom Zahlungsmodul als fertiges HTML erzeugt. */
+    public function paymentSummary(RegistrationRenderContext $context = RegistrationRenderContext::Web): RegistrationSummaryResponse
+    {
+        $module = $this->paymentModule();
+        if ($module === null) {
+            return new RegistrationSummaryResponse();
+        }
+
+        return $module->registrationSummary(new RegistrationSummaryRequest($this, $this->paymentConfiguration(), $context));
+    }
 }

app/Models/EventParticipantAddon.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace App\Models;
+
+use App\Casts\AmountCast;
+use App\Scopes\InstancedModel;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class EventParticipantAddon extends InstancedModel
+{
+    protected $table = 'event_participant_addons';
+
+    protected $fillable = [
+        'tenant',
+        'event_id',
+        'event_participant_id',
+        'addon_key',
+        'title',
+        'price',
+        'flat',
+        'days',
+        'amount',
+    ];
+
+    protected $casts = [
+        'flat' => 'boolean',
+        'days' => 'integer',
+        'price' => AmountCast::class,
+        'amount' => AmountCast::class,
+    ];
+
+    public function event(): BelongsTo
+    {
+        return $this->belongsTo(Event::class);
+    }
+
+    public function participant(): BelongsTo
+    {
+        return $this->belongsTo(EventParticipant::class, 'event_participant_id');
+    }
+}

app/Models/EventParticipantOption.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Models;
+
+use App\Scopes\InstancedModel;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class EventParticipantOption extends InstancedModel
+{
+    protected $table = 'event_participant_options';
+
+    protected $fillable = [
+        'tenant',
+        'event_id',
+        'event_participant_id',
+        'question_key',
+        'question_label',
+        'value',
+        'value_label',
+    ];
+
+    public function event(): BelongsTo
+    {
+        return $this->belongsTo(Event::class);
+    }
+
+    public function participant(): BelongsTo
+    {
+        return $this->belongsTo(EventParticipant::class, 'event_participant_id');
+    }
+}

app/Models/PaymentMethod.php

@@ -0,0 +1,101 @@
+<?php
+
+namespace App\Models;
+
+use App\EventPaymentModules\EventPaymentModuleRegistry;
+use App\Scopes\CommonModel;
+use Illuminate\Database\Eloquent\Concerns\HasUuids;
+
+/**
+ * @property string $id
+ * @property string $slug
+ *
+ * Hinweis: Das Verhalten je Zahlungsart (Options-Schema, Defaults, Zahlung, Rechnung) liegt in den
+ * Zahlungsmodulen unter {@see \App\EventPaymentModules}. Dieses Model bleibt eine dünne Fassade, damit
+ * bestehende Aufrufstellen (PaymentMethod::optionsFor/... ) unverändert weiterlaufen.
+ */
+class PaymentMethod extends CommonModel
+{
+    use HasUuids;
+
+    public $incrementing = false;
+    protected $keyType = 'string';
+
+    public const string PAYMENT_ACCOUNT_TRANSACTION = 'PAYMENT_ACCOUNT_TRANSACTION';
+    public const string PAYMENT_NOT_DEFINED = 'PAYMENT_NOT_DEFINED';
+
+    protected $fillable = [
+        'slug',
+    ];
+
+    /**
+     * Standard-Werte (name/description/configuration) je Slug -- aus den Zahlungsmodulen aufgebaut.
+     *
+     * @return array<string, array{name: string, description: ?string, configuration: array<string, mixed>}>
+     */
+    public static function defaults(): array
+    {
+        $defaults = [];
+        foreach (EventPaymentModuleRegistry::all() as $slug => $module) {
+            $defaults[$slug] = [
+                'name' => $module->defaultName(),
+                'description' => $module->defaultDescription(),
+                'configuration' => $module->defaultConfiguration(),
+            ];
+        }
+
+        return $defaults;
+    }
+
+    /**
+     * Admin-Options-Schema für einen Slug.
+     *
+     * @return array<int, array{name: string, label: string, type: string, required: bool}>
+     */
+    public static function optionsFor(string $slug): array
+    {
+        return EventPaymentModuleRegistry::forSlug($slug)?->getOptions() ?? [];
+    }
+
+    /**
+     * Teilnehmer-Eingabe-Schema für einen Slug (payer-seitig).
+     *
+     * @return array<int, array{name: string, label: string, type: string, required: bool}>
+     */
+    public static function participantOptionsFor(string $slug): array
+    {
+        return EventPaymentModuleRegistry::forSlug($slug)?->getParticipantOptions() ?? [];
+    }
+
+    /**
+     * Namen aller Pflicht-Optionen eines Slugs.
+     *
+     * @return array<int, string>
+     */
+    public static function requiredOptionKeys(string $slug): array
+    {
+        return EventPaymentModuleRegistry::forSlug($slug)?->requiredOptionKeys() ?? [];
+    }
+
+    /**
+     * Reduziert eine Konfiguration auf die im Schema definierten Options-Keys des Slugs.
+     *
+     * @param array<string, mixed> $config
+     * @return array<string, mixed>
+     */
+    public static function sanitizeConfiguration(string $slug, array $config): array
+    {
+        return EventPaymentModuleRegistry::forSlug($slug)?->sanitizeConfiguration($config) ?? [];
+    }
+
+    /**
+     * Prüft, ob alle Pflicht-Optionen eines Slugs in der Konfiguration befüllt (non-empty) sind.
+     * Unbekannte Slugs (kein Modul) gelten als vollständig -- kein Modul, keine Pflichtfelder.
+     *
+     * @param array<string, mixed> $config
+     */
+    public static function isConfigurationComplete(string $slug, array $config): bool
+    {
+        return EventPaymentModuleRegistry::forSlug($slug)?->isConfigurationComplete($config) ?? true;
+    }
+}