diff --git a/app/Providers/GlobalDataProvider.php b/app/Providers/GlobalDataProvider.php
index bfb3bfa..5383949 100644
--- a/app/Providers/GlobalDataProvider.php
+++ b/app/Providers/GlobalDataProvider.php
@@ -20,6 +20,13 @@ class GlobalDataProvider {
     public function __invoke() {
         $this->user = auth()->user();
 
+        $canAccessAdmin = false;
+        if (null !== $this->user) {
+            $authCheck = new AuthCheckProvider();
+            $effectiveRole = $authCheck->getUserRole();
+            $canAccessAdmin = in_array($effectiveRole, [UserRole::USER_ROLE_ADMIN, UserRole::USER_ROLE_GROUP_LEADER], true);
+        }
+
         return response()->json([
             'user' => null !== $this->user ? new UserResource($this->user)->toArray(request()) : null,
             'navbar' => $this->generateNavbar(),
@@ -27,6 +34,7 @@ class GlobalDataProvider {
             'activeUsers' => $this->getActiveUsers(),
             'version' => config('app.version'),
             'currentEvent' => $this->getCurrentEventData(),
+            'canAccessAdmin' => $canAccessAdmin,
         ]);
     }
 
diff --git a/public/css/app.css b/public/css/app.css
index 5194325..acc89c6 100644
--- a/public/css/app.css
+++ b/public/css/app.css
@@ -57,8 +57,8 @@ h1, h2, h3, h4, h5, h6 {
 
 .header .user-info {
     position: relative;
-    right: calc(-100% + 190px);
-    width: 195px;
+    right: calc(-100% + 250px);
+    width: 240px;
     overflow: hidden;
     border-radius: 50px 0 0 50px;
     text-align: right;
@@ -108,11 +108,11 @@ h1, h2, h3, h4, h5, h6 {
     display: flex;
     align-items: center;
     justify-content: center;
+    height: 180px;
 }
 
 .logo img {
-    width: 135px !important;
-    height: 70px !important;
+    width: 100% !important;
 }
 
 .footer {
diff --git a/public/favicon.png b/public/favicon.png
new file mode 100644
index 0000000..149bbee
Binary files /dev/null and b/public/favicon.png differ
diff --git a/public/images/mareike.png b/public/images/mareike.png
new file mode 100644
index 0000000..149bbee
Binary files /dev/null and b/public/images/mareike.png differ
diff --git a/resources/js/layouts/AdminAppLayout.vue b/resources/js/layouts/AdminAppLayout.vue
new file mode 100644
index 0000000..3f3a8f5
--- /dev/null
+++ b/resources/js/layouts/AdminAppLayout.vue
@@ -0,0 +1,444 @@
+<script setup>
+import {reactive, onMounted, ref, computed} from 'vue';
+import Icon from "../../../app/Views/Components/Icon.vue";
+import {toast} from "vue3-toastify";
+import {useAjax} from "../components/ajaxHandler.js";
+
+const { request } = useAjax()
+
+const globalProps = reactive({
+    tenant: '',
+    user: null,
+    currentPath: '/',
+    errors: {},
+    availableLocalGroups: [],
+    message: '',
+    currentEvent: null,
+    version: '',
+});
+
+const sidebarOpen = ref(false);
+
+function toggleSidebar() {
+    sidebarOpen.value = !sidebarOpen.value;
+}
+
+function closeSidebar() {
+    sidebarOpen.value = false;
+}
+
+onMounted(async () => {
+    const response = await fetch('/api/v1/core/retrieve-global-data');
+    const data = await response.json();
+    Object.assign(globalProps, data);
+
+    const messageResponse = await request('/api/v1/core/retrieve-messages', {
+        method: 'GET',
+    })
+
+    if (messageResponse.message !== '') {
+        if (messageResponse.messageType === 'success') {
+            toast.success(messageResponse.message)
+        } else {
+            toast.error(messageResponse.message)
+        }
+    }
+});
+
+const currentPath = window.location.pathname;
+
+const props = defineProps({
+    title: { type: String, default: 'Administration' },
+    flash: { type: Object, default: () => ({}) }
+});
+
+</script>
+
+<template>
+    <div class="app-layout">
+        <!-- Mobile Overlay -->
+        <div class="sidebar-overlay" :class="{ active: sidebarOpen }" @click="closeSidebar"></div>
+
+        <div class="main">
+            <!-- Header -->
+            <div class="header">
+                <button class="hamburger-btn" @click="toggleSidebar" aria-label="Menü öffnen">
+                    <span></span>
+                    <span></span>
+                    <span></span>
+                </button>
+
+                <div class="left-side">
+                    <h1>{{ props.title }}</h1>
+                    <label id="show_username" v-if="globalProps.user !== null">Willkommen, {{ globalProps.user.nicename }}</label>
+                </div>
+
+                <div class="header-actions" v-if="globalProps.user !== null">
+                    <div class="user-info">
+                        <a href="/" class="header-link-anonymous" title="Zurück zur Anwendung">
+                            <Icon name="desktop" />
+                        </a>
+                        <a href="/messages" class="header-link-anonymous" title="Meine Nachrichten">
+                            <Icon name="envelope" />
+                        </a>
+                        <a href="/profile" class="header-link-anonymous" title="Mein Profil">
+                            <Icon name="user" />
+                        </a>
+                        <a href="/logout" class="header-link-anonymous-logout" title="Abmelden">
+                            <Icon name="lock" />
+                        </a>
+                    </div>
+                </div>
+            </div>
+
+            <!-- Flexbox: Sidebar + Content -->
+            <div class="flexbox">
+                <div class="sidebar" :class="{ 'sidebar-open': sidebarOpen }">
+                    <div class="logo">
+                        <img src="../../../public/images/mareike.png" alt="Logo" />
+                    </div>
+                    <nav class="nav">
+                    </nav>
+                </div>
+
+                <div class="content-area">
+                    <div class="content">
+                        <slot />
+                    </div>
+                </div>
+            </div>
+
+            <!-- Footer -->
+            <footer class="footer">
+                <div class="footer-inner">
+                    <span>Version {{ globalProps.version }}</span>
+                    <span class="footer-hide-mobile">mareike – Modernes Anmeldesystem und richtig einfache Kostenerfassung</span>
+                    <a href="/impress" class="footer-link">Impressum</a>
+                    <a href="/gdpr" class="footer-link">Datenschutzerklärung</a>
+                    <span>&copy; 2022 – 2026</span>
+                </div>
+            </footer>
+        </div>
+
+        <transition name="fade">
+            <div v-if="flash.message" class="toaster">
+                {{ flash.message }}
+            </div>
+        </transition>
+    </div>
+</template>
+
+<style scoped>
+/* ─── Header ─── */
+.header {
+    display: flex;
+    align-items: center;
+    height: 80px;
+    background: #ffffff;
+    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
+    padding: 0;
+    position: relative;
+    z-index: 50;
+    flex-shrink: 0;
+}
+
+.left-side {
+    flex: 1;
+    padding: 0 20px;
+    overflow: hidden;
+}
+
+.left-side h1 {
+    margin: 0;
+    font-size: 1.4rem;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+#show_username {
+    display: block;
+    font-weight: bold;
+    font-size: 0.85rem;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.header-actions {
+    display: flex;
+    align-items: center;
+    flex-shrink: 0;
+    width: 260px;
+}
+
+.header-link-anonymous,
+.header-link-anonymous-logout {
+    color: #000000;
+    font-weight: bold;
+    text-decoration: none;
+    background-color: #ffffff;
+    padding: 10px 20px;
+    display: inline-block;
+}
+
+.header-link-anonymous:hover {
+    background-color: #1d4899;
+    color: #ffffff;
+}
+
+.header-link-anonymous-logout:hover {
+    background-color: #ff0000;
+    color: #ffffff;
+}
+
+/* ─── Hamburger ─── */
+.hamburger-btn {
+    display: none;
+    flex-direction: column;
+    justify-content: center;
+    align-items: center;
+    gap: 5px;
+    width: 50px;
+    height: 80px;
+    border: none;
+    background: transparent;
+    cursor: pointer;
+    flex-shrink: 0;
+    padding: 0 12px;
+}
+
+.hamburger-btn span {
+    display: block;
+    width: 24px;
+    height: 3px;
+    background-color: #333;
+    border-radius: 2px;
+    transition: all 0.2s;
+}
+
+/* ─── Layout ─── */
+.app-layout {
+    display: flex;
+    height: 100vh;
+    background: #f0f2f5;
+    font-family: sans-serif;
+    overflow: hidden;
+}
+
+.main {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+    margin: 20px;
+    box-shadow: 20px 20px 15px rgba(0, 0, 0, 0.1);
+    border-radius: 0 10px 0 0;
+}
+
+.flexbox {
+    display: flex;
+    flex: 1;
+    background-color: #FAFAFB;
+    overflow: hidden;
+    gap: 1px;
+}
+
+/* ─── Sidebar ─── */
+.sidebar {
+    flex-basis: 275px;
+    flex-shrink: 0;
+    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
+    display: flex;
+    flex-direction: column;
+    background-color: #ffffff;
+    overflow-y: auto;
+    transition: transform 0.3s ease;
+}
+
+.sidebar-overlay {
+    display: none;
+    position: fixed;
+    inset: 0;
+    background: rgba(0,0,0,0.4);
+    z-index: 99;
+}
+
+.logo {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 10px 0;
+    height: 180px;
+    width: 100%;
+    margin-bottom: 30px;
+}
+
+.logo img {
+    object-fit: contain;
+}
+
+/* ─── Nav ─── */
+.nav {
+    flex: 1;
+}
+
+.nav ul {
+    list-style: none;
+    padding: 0;
+    margin: 0;
+    border-bottom: 1px solid #ddd;
+}
+
+.nav-links li a {
+    color: #b6b6b6;
+    background-color: #fff;
+    padding: 16px 25px;
+    display: block;
+    text-decoration: none;
+    font-weight: bold;
+}
+
+.nav a:hover {
+    background-color: #1d4899;
+    color: #ffffff;
+}
+
+/* ─── Content ─── */
+.content-area {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    overflow-y: auto;
+    overflow-x: hidden;
+}
+
+.content {
+    padding: 30px 20px;
+    flex: 1;
+}
+
+/* ─── Footer ─── */
+.footer {
+    background: #666666;
+    border-top: 1px solid #ddd;
+    color: #ffffff;
+    padding: 10px 15px;
+    font-size: 11pt;
+    font-weight: bold;
+    flex-shrink: 0;
+}
+
+.footer-inner {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 10px 20px;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.footer-link {
+    color: #ffffff;
+    text-decoration: none;
+}
+
+.footer-link:hover {
+    text-decoration: underline;
+}
+
+/* ═══════════════════════════════════════════
+   TABLET (640px – 1023px)
+═══════════════════════════════════════════ */
+@media (max-width: 1023px) {
+    .app-layout {
+        margin: 0;
+        height: 100vh;
+    }
+
+    .main {
+        margin: 0;
+        border-radius: 0;
+        box-shadow: none;
+    }
+
+    .hamburger-btn {
+        display: flex;
+    }
+
+    .sidebar {
+        position: fixed;
+        left: 0;
+        top: 0;
+        bottom: 0;
+        z-index: 100;
+        transform: translateX(-100%);
+        width: 260px;
+        flex-basis: 260px;
+    }
+
+    .sidebar.sidebar-open {
+        transform: translateX(0);
+    }
+
+    .sidebar-overlay.active {
+        display: block;
+    }
+
+    .header-link-anonymous,
+    .header-link-anonymous-logout {
+        padding: 10px 12px;
+        font-size: 0.9rem;
+    }
+
+    .left-side h1 {
+        font-size: 1.1rem;
+    }
+}
+
+/* ═══════════════════════════════════════════
+   SMARTPHONE (< 640px)
+═══════════════════════════════════════════ */
+@media (max-width: 639px) {
+    .header {
+        height: 60px;
+    }
+
+    .hamburger-btn {
+        height: 60px;
+    }
+
+    .left-side h1 {
+        font-size: 1rem;
+    }
+
+    #show_username {
+        display: none;
+    }
+
+    .header-link-anonymous,
+    .header-link-anonymous-logout {
+        padding: 6px 8px;
+        font-size: 0.75rem;
+        display: inline;
+    }
+
+    .footer-hide-mobile {
+        display: none;
+    }
+
+    .footer-inner {
+        justify-content: center;
+        font-size: 9pt;
+        gap: 6px 12px;
+    }
+
+    .content {
+        padding: 15px 10px;
+    }
+
+    .sidebar {
+        width: 240px;
+        flex-basis: 240px;
+    }
+}
+</style>
diff --git a/resources/js/layouts/AppLayout.vue b/resources/js/layouts/AppLayout.vue
index 8106e78..4fffb30 100644
--- a/resources/js/layouts/AppLayout.vue
+++ b/resources/js/layouts/AppLayout.vue
@@ -61,6 +61,8 @@ const showCurrentEventLink = computed(() => {
     return currentPath !== '/event/details/' + globalProps.currentEvent.identifier;
 });
 
+const canAccessAdmin = computed(() => globalProps.canAccessAdmin ?? false);
+
 const props = defineProps({
     title: { type: String, default: 'App' },
     flash: { type: Object, default: () => ({}) }
@@ -99,6 +101,9 @@ const props = defineProps({
 
                 <div class="header-actions" v-if="globalProps.user !== null">
                     <div class="user-info">
+                        <a v-if="canAccessAdmin" href="/admin" class="header-link-anonymous" title="Administration">
+                            <Icon name="gear" />
+                        </a>
                         <a href="/messages" class="header-link-anonymous" title="Meine Nachrichten">
                             <Icon name="envelope" />
                         </a>
@@ -123,7 +128,7 @@ const props = defineProps({
             <div class="flexbox">
                 <div class="sidebar" :class="{ 'sidebar-open': sidebarOpen }">
                     <div class="logo">
-                        <img src="../../../public/images/logo.png" alt="Logo" />
+                        <img src="../../../public/images/mareike.png" alt="Logo" />
                     </div>
                     <nav class="nav">
                         <ul class="nav-links" v-if="globalProps.navbar.personal.length > 0">
@@ -235,7 +240,7 @@ const props = defineProps({
     display: flex;
     align-items: center;
     flex-shrink: 0;
-    width: 200px;
+    width: 260px;
 }
 
 .header-link-anonymous,
@@ -335,11 +340,13 @@ const props = defineProps({
     align-items: center;
     justify-content: center;
     padding: 10px 0;
+    height: 180px;
+    width: 100%;
+    margin-bottom: 30px;
 }
 
 .logo img {
-    width: 135px;
-    height: 70px;
+    width: 100%;
     object-fit: contain;
 }
 
diff --git a/resources/views/app.blade.php b/resources/views/app.blade.php
index 7058306..9f40596 100644
--- a/resources/views/app.blade.php
+++ b/resources/views/app.blade.php
@@ -7,6 +7,7 @@
     <link rel="stylesheet" href="/css/modalBox.css" />
     <link rel="stylesheet" href="/css/costunits.css" />
     <link rel="stylesheet" href="/css/invoices.css" />
+    <link rel="icon" type="image/png" href="/favicon.png" />
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <meta name="csrf-token" content="{{ csrf_token() }}">
diff --git a/routes/web.php b/routes/web.php
index fb6ba0e..ce29e79 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -24,6 +24,7 @@ require_once __DIR__ . '/../app/Domains/Event/Routes/api.php';
 require_once __DIR__ . '/../app/Domains/Budget/Routes/web.php';
 require_once __DIR__ . '/../app/Domains/Budget/Routes/api.php';
 require_once __DIR__ . '/../app/Domains/Legal/Routes/web.php';
+require_once __DIR__ . '/../app/Domains/Admin/Routes/web.php';
 
 
 Route::get('/LKvDUqWl', function () {