diff --git a/app/static/style.css b/app/static/style.css
index 94d0ffe..c73eef7 100644
--- a/app/static/style.css
+++ b/app/static/style.css
@@ -22,6 +22,11 @@
   box-sizing: border-box;
 }
 
+html {
+  overflow-x: hidden;
+  width: 100%;
+}
+
 body {
   font-family: var(--font-family);
   background-color: var(--bg-primary);
@@ -30,6 +35,9 @@ body {
   min-height: 100vh;
   display: flex;
   flex-direction: column;
+  overflow-x: hidden;
+  width: 100%;
+  position: relative;
 }
 
 .container {
@@ -51,6 +59,7 @@ body {
   position: sticky;
   top: 0;
   z-index: 50;
+  width: 100%;
 }
 
 .nav-content {
@@ -60,6 +69,51 @@ body {
   height: 64px;
 }
 
+/* Mobile Toggle Hamburger */
+.mobile-toggle {
+  display: none;
+  background: transparent;
+  border: 1px solid var(--border-color);
+  border-radius: var(--radius-md);
+  cursor: pointer;
+  padding: 8px;
+  width: 42px;
+  height: 42px;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  gap: 5px;
+  z-index: 100;
+  transition: background 0.2s, border-color 0.2s;
+}
+
+.mobile-toggle:hover, .mobile-toggle:focus-visible {
+  background: rgba(255, 255, 255, 0.08);
+  border-color: var(--accent);
+  outline: none;
+}
+
+.mobile-toggle .bar {
+  width: 20px;
+  height: 2px;
+  background-color: var(--text-main);
+  border-radius: 2px;
+  transition: transform 0.25s ease, opacity 0.25s ease;
+}
+
+.mobile-toggle.open .bar:nth-child(1) {
+  transform: translateY(7px) rotate(45deg);
+}
+
+.mobile-toggle.open .bar:nth-child(2) {
+  opacity: 0;
+  transform: scaleX(0);
+}
+
+.mobile-toggle.open .bar:nth-child(3) {
+  transform: translateY(-7px) rotate(-45deg);
+}
+
 .brand {
   font-size: 1.25rem;
   font-weight: 700;
@@ -1177,6 +1231,317 @@ body {
 .empty-icon {
   font-size: 3rem;
   margin-bottom: 16px;
+/* Demo Toggle & Credentials Box */
+.demo-toggle-wrapper {
+  margin: 16px 0 12px;
+  text-align: center;
+}
+
+.btn-demo-toggle {
+  background: rgba(255, 255, 255, 0.05);
+  border: 1px dashed var(--border-color);
+  border-radius: 9999px;
+  color: var(--text-muted);
+  padding: 6px 14px;
+  font-size: 0.82rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.2s;
+}
+
+.btn-demo-toggle:hover {
+  background: rgba(56, 189, 248, 0.1);
+  color: var(--accent);
+  border-color: var(--accent);
+}
+
+.demo-credentials-card {
+  background: rgba(56, 189, 248, 0.06);
+  border: 1px solid rgba(56, 189, 248, 0.25);
+  border-radius: var(--radius-md);
+  padding: 14px 16px;
+  margin-bottom: 20px;
+  animation: fadeInNav 0.2s ease forwards;
+}
+
+.demo-card-header {
+  font-size: 0.85rem;
+  color: var(--accent);
+  margin-bottom: 10px;
+}
+
+.demo-creds-list {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+
+.demo-cred-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  background: rgba(11, 15, 25, 0.6);
+  border: 1px solid var(--border-color);
+  padding: 8px 12px;
+  border-radius: 6px;
+  font-size: 0.85rem;
+  gap: 10px;
+  flex-wrap: wrap;
+}
+
+.demo-cred-item code {
+  background: rgba(255, 255, 255, 0.08);
+  padding: 2px 6px;
+  border-radius: 4px;
+  color: var(--text-main);
+  font-size: 0.82rem;
+}
+
+.btn-fill-small {
+  padding: 4px 10px;
+  background: rgba(56, 189, 248, 0.15);
+  border: 1px solid rgba(56, 189, 248, 0.35);
+  color: var(--accent);
+  border-radius: 6px;
+  font-size: 0.78rem;
+  font-weight: 700;
+  cursor: pointer;
+  transition: all 0.15s;
+  white-space: nowrap;
+}
+
+.btn-fill-small:hover {
+  background: var(--accent);
+  color: #0b0f19;
+}
+
+/* ================= COMPREHENSIVE RESPONSIVE MOBILE STYLES ================= */
+@media (max-width: 768px) {
+  .mobile-toggle {
+    display: flex;
+  }
+
+  .nav-links {
+    display: none;
+    position: fixed;
+    top: 64px;
+    left: 0;
+    width: 100%;
+    height: calc(100vh - 64px);
+    background: rgba(11, 15, 25, 0.98);
+    backdrop-filter: blur(20px);
+    -webkit-backdrop-filter: blur(20px);
+    border-bottom: 1px solid var(--border-color);
+    flex-direction: column;
+    padding: 24px 20px 40px;
+    gap: 16px;
+    overflow-y: auto;
+    z-index: 90;
+    align-items: stretch;
+    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
+  }
+
+  .nav-links.open {
+    display: flex;
+    animation: fadeInNav 0.22s ease forwards;
+  }
+
+  .nav-links a {
+    font-size: 1.05rem;
+    padding: 12px 14px;
+    border-radius: var(--radius-md);
+    display: block;
+    text-align: left;
+    border: 1px solid transparent;
+  }
+
+  .nav-links a:hover {
+    background: rgba(56, 189, 248, 0.1);
+    border-color: rgba(56, 189, 248, 0.25);
+  }
+
+  .user-greeting {
+    padding: 12px 14px;
+    font-size: 0.95rem;
+    display: block;
+    text-align: left;
+    background: rgba(255, 255, 255, 0.05);
+    border-radius: var(--radius-md);
+  }
+
+  .container {
+    padding: 0 14px;
+  }
+
+  /* Header & Top Actions in Admin */
+  .admin-header {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 14px;
+  }
+
+  .admin-header h1 {
+    font-size: 1.35rem;
+  }
+
+  .admin-actions-top {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: 8px;
+    width: 100%;
+  }
+
+  .admin-actions-top button,
+  .admin-actions-top a {
+    width: 100%;
+    text-align: center;
+    justify-content: center;
+    font-size: 0.8rem;
+    padding: 9px 6px;
+    white-space: normal;
+  }
+
+  /* Tabs Navigation */
+  .admin-nav-tabs {
+    overflow-x: auto;
+    -webkit-overflow-scrolling: touch;
+    display: flex;
+    flex-wrap: nowrap;
+    gap: 4px;
+    padding-bottom: 2px;
+  }
+
+  .admin-tab-btn {
+    padding: 10px 14px;
+    font-size: 0.88rem;
+    flex-shrink: 0;
+  }
+
+  /* Events Ribbon */
+  .events-ribbon {
+    padding: 10px 14px;
+    gap: 10px;
+    flex-direction: column;
+    align-items: flex-start;
+  }
+
+  .events-ribbon-list {
+    overflow-x: auto;
+    -webkit-overflow-scrolling: touch;
+    width: 100%;
+  }
+
+  /* Event Action Bar */
+  .event-action-bar {
+    flex-direction: column;
+    align-items: stretch;
+    gap: 12px;
+    padding: 14px 16px;
+  }
+
+  .event-actions-right {
+    width: 100%;
+  }
+
+  .event-actions-right button {
+    width: 100%;
+    text-align: center;
+  }
+
+  /* Stats Cards */
+  .stats-grid {
+    grid-template-columns: 1fr 1fr;
+    gap: 10px;
+  }
+
+  .stat-card {
+    padding: 14px 12px;
+  }
+
+  .stat-value {
+    font-size: 1.25rem;
+  }
+
+  /* Admin Cards & Tables */
+  .admin-columns {
+    grid-template-columns: 1fr;
+    gap: 18px;
+  }
+
+  .admin-card {
+    padding: 18px 14px;
+  }
+
+  .shopping-table-wrapper,
+  .orders-table-wrapper {
+    overflow-x: auto;
+    -webkit-overflow-scrolling: touch;
+    width: 100%;
+    display: block;
+  }
+
+  .data-table th, .data-table td {
+    padding: 8px 6px;
+    font-size: 0.82rem;
+  }
+
+  /* Form rows on mobile */
+  .form-row-2, .form-row-3 {
+    grid-template-columns: 1fr;
+    gap: 12px;
+  }
+
+  /* Order Page Banner & Grid */
+  .banner {
+    padding: 18px 14px;
+  }
+
+  .banner h1 {
+    font-size: 1.4rem;
+  }
+
+  .banner-top-row {
+    flex-direction: column;
+    align-items: flex-start;
+    gap: 8px;
+  }
+
+  .form-grid {
+    grid-template-columns: 1fr;
+    gap: 20px;
+  }
+
+  .product-card {
+    padding: 14px 12px;
+  }
+
+  .product-info h3 {
+    font-size: 1rem;
+  }
+
+  .modal-card {
+    width: 95%;
+    padding: 20px 16px;
+    max-height: 90vh;
+    overflow-y: auto;
+  }
+
+  .footer-inner {
+    flex-direction: column;
+    text-align: center;
+    gap: 12px;
+  }
+}
+
+@keyframes fadeInNav {
+  from {
+    opacity: 0;
+    transform: translateY(-8px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
 }
 
 /* ================= PRINT MEDIA QUERY (1-PAGE A4) ================= */
diff --git a/app/templates/base.html b/app/templates/base.html
index 6baed85..a361182 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -14,9 +14,14 @@
       <a href="/" class="brand">
         🥨 <span>Schmankerl</span> <small class="tenant-badge">{{ tenant.name if tenant else 'Portal' }}</small>
       </a>
-      <nav class="nav-links">
+      <button class="mobile-toggle" aria-label="Menü öffnen" id="mobileNavToggle" aria-expanded="false">
+        <span class="bar"></span>
+        <span class="bar"></span>
+        <span class="bar"></span>
+      </button>
+      <nav class="nav-links" id="navLinks">
         {% if current_user %}
-        <a href="/">Brotzeit bestellen</a>
+        <a href="/">🥨 Brotzeit bestellen</a>
         {% if current_user.role == 'admin' %}
         <a href="/admin" class="nav-admin">👨‍🍳 Einkäufer-Cockpit</a>
         {% endif %}
@@ -43,5 +48,25 @@
     </div>
   </footer>
 
+  <script>
+    const navToggle = document.getElementById('mobileNavToggle');
+    const navLinks = document.getElementById('navLinks');
+    if (navToggle && navLinks) {
+      navToggle.addEventListener('click', () => {
+        const isOpen = navLinks.classList.toggle('open');
+        navToggle.classList.toggle('open', isOpen);
+        navToggle.setAttribute('aria-expanded', isOpen);
+        document.body.style.overflow = isOpen ? 'hidden' : '';
+      });
+      navLinks.querySelectorAll('a').forEach(link => {
+        link.addEventListener('click', () => {
+          navLinks.classList.remove('open');
+          navToggle.classList.remove('open');
+          navToggle.setAttribute('aria-expanded', 'false');
+          document.body.style.overflow = '';
+        });
+      });
+    }
+  </script>
 </body>
 </html>
diff --git a/app/templates/login.html b/app/templates/login.html
index 1a7446e..70ba5a3 100644
--- a/app/templates/login.html
+++ b/app/templates/login.html
@@ -27,37 +27,53 @@
     </div>
     {% endif %}
 
-    <!-- 1-Click Demo Login Box -->
-    <div class="demo-login-card">
-      <h3>🚀 1-Klick Demo-Zugang</h3>
-      <p class="card-hint">Wähle eine Rolle zum sofortigen Ausprobieren:</p>
-      <div class="demo-btn-grid">
-        <form action="/login/quick" method="POST">
-          <input type="hidden" name="role" value="user">
-          <button type="submit" class="btn-demo">
-            👤 <strong>Mitarbeiter</strong><br>
-            <small>Brotzeit bestellen & Übersicht</small>
-          </button>
-        </form>
-        <form action="/login/quick" method="POST">
-          <input type="hidden" name="role" value="admin">
-          <button type="submit" class="btn-demo admin">
-            👨‍🍳 <strong>Einkäufer / Admin</strong><br>
-            <small>Sammelliste & Kasse verwalten</small>
-          </button>
-        </form>
-      </div>
+    {% if tenant and tenant.slug == 'demo' %}
+    <!-- Demo Switch & Credentials Box -->
+    <div class="demo-toggle-wrapper">
+      <button type="button" class="btn-demo-toggle" id="btnToggleDemo" onclick="toggleDemoBox()">
+        <span id="demoToggleIcon">🧪</span> <span id="demoToggleText">Demo-Zugangsdaten einblenden</span>
+      </button>
     </div>
 
+    <div id="demoCredentialsBox" class="demo-credentials-card" style="display: none;">
+      <div class="demo-card-header">
+        <strong>🧪 Demo-Zugangsdaten (Klick auf „Ausfüllen“):</strong>
+      </div>
+      <div class="demo-creds-list">
+        <div class="demo-cred-item">
+          <div>
+            <span class="badge-role admin">👨‍🍳 Admin</span>
+            <code>admin@waiswuaschd.de</code>
+            <span class="text-muted" style="font-size: 0.8rem;">(PW: <code>admin123</code>)</span>
+          </div>
+          <button type="button" class="btn-fill-small" onclick="fillCredentials('admin@waiswuaschd.de', 'admin123')">
+            ✍️ Ausfüllen
+          </button>
+        </div>
+
+        <div class="demo-cred-item">
+          <div>
+            <span class="badge-role">👤 Mitarbeiter</span>
+            <code>maxi@waiswuaschd.de</code>
+            <span class="text-muted" style="font-size: 0.8rem;">(PW: <code>demo123</code>)</span>
+          </div>
+          <button type="button" class="btn-fill-small" onclick="fillCredentials('maxi@waiswuaschd.de', 'demo123')">
+            ✍️ Ausfüllen
+          </button>
+        </div>
+      </div>
+    </div>
+    {% endif %}
+
     <!-- Login Form -->
-    <form action="/login" method="POST" id="formLogin" class="auth-form" style="margin-top: 1.5rem;">
+    <form action="/login" method="POST" id="formLogin" class="auth-form">
       <div class="input-group">
         <label for="login_email">E-Mail-Adresse</label>
-        <input type="email" id="login_email" name="email" required placeholder="name@firma.de">
+        <input type="email" id="login_email" name="email" required placeholder="name@firma.de" autocomplete="username">
       </div>
       <div class="input-group">
         <label for="login_password">Passwort</label>
-        <input type="password" id="login_password" name="password" required placeholder="••••••••">
+        <input type="password" id="login_password" name="password" required placeholder="••••••••" autocomplete="current-password">
       </div>
       <button type="submit" class="btn-submit">Anmelden</button>
     </form>
@@ -84,4 +100,50 @@
   </div>
 
 </div>
+
+<script>
+  function fillCredentials(email, pw) {
+    const emailInput = document.getElementById('login_email');
+    const pwInput = document.getElementById('login_password');
+    emailInput.value = email;
+    pwInput.value = pw;
+    emailInput.focus();
+    emailInput.style.boxShadow = '0 0 0 2px var(--accent)';
+    pwInput.style.boxShadow = '0 0 0 2px var(--accent)';
+    setTimeout(() => {
+      emailInput.style.boxShadow = '';
+      pwInput.style.boxShadow = '';
+    }, 1000);
+  }
+
+  function toggleDemoBox() {
+    const box = document.getElementById('demoCredentialsBox');
+    const text = document.getElementById('demoToggleText');
+    const icon = document.getElementById('demoToggleIcon');
+    if (box.style.display === 'none' || !box.style.display) {
+      box.style.display = 'block';
+      text.innerText = 'Demo-Hilfe ausblenden (Reale Firmenansicht)';
+      icon.innerText = '🏢';
+      localStorage.setItem('schmankerl_show_demo', '1');
+    } else {
+      box.style.display = 'none';
+      text.innerText = 'Demo-Zugangsdaten einblenden';
+      icon.innerText = '🧪';
+      localStorage.setItem('schmankerl_show_demo', '0');
+    }
+  }
+
+  document.addEventListener('DOMContentLoaded', () => {
+    if (localStorage.getItem('schmankerl_show_demo') === '1') {
+      const box = document.getElementById('demoCredentialsBox');
+      const text = document.getElementById('demoToggleText');
+      const icon = document.getElementById('demoToggleIcon');
+      if (box && text && icon) {
+        box.style.display = 'block';
+        text.innerText = 'Demo-Hilfe ausblenden (Reale Firmenansicht)';
+        icon.innerText = '🏢';
+      }
+    }
+  });
+</script>
 {% endblock %}