Diverse Fixes nach refactoring

public/css/dashboard.css

@@ -105,24 +105,97 @@ body {
     display: inline-block;
 }
 
+/* ============================================================================
+   NAVIGATION BUTTONS - COMPLETE REDESIGN
+   ============================================================================ */
+
+/* Base button styles */
+.btn {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+    padding: 0.75rem 1.5rem;
+    border: none;
+    border-radius: 0.5rem;
+    font-weight: 600;
+    font-size: 0.9rem;
+    text-decoration: none;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    white-space: nowrap;
+}
+
+/* Primary button (Dashboard) */
 .btn-primary {
-    background: linear-gradient(135deg, #00d4ff, #0891b2);
+    background: #2563eb;
     color: white;
 }
 
 .btn-primary:hover {
+    background: #1d4ed8;
     transform: translateY(-2px);
-    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
+    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
 }
 
+/* Logout button */
 .btn-logout {
-    background: linear-gradient(135deg, #dc3545, #c82333);
+    background: #dc2626;
     color: white;
 }
 
 .btn-logout:hover {
+    background: #b91c1c;
     transform: translateY(-2px);
-    box-shadow: 0 10px 25px rgba(220, 53, 69, 0.3);
+    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
+}
+
+/* Mobile navigation container */
+.mobile-nav-buttons {
+    display: flex;
+    gap: 1rem;
+    align-items: center;
+    justify-content: flex-end;
+    margin: 1rem 0;
+    flex-wrap: wrap;
+    position: absolute;
+    top: 1rem;
+    right: 1rem;
+}
+
+/* Login button */
+.admin-login-btn {
+    background: #f59e0b;
+    color: white;
+}
+
+.admin-login-btn:hover {
+    background: #d97706;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
+}
+
+/* Dashboard button */
+.dashboard-btn {
+    background: #2563eb;
+    color: white;
+}
+
+.dashboard-btn:hover {
+    background: #1d4ed8;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
+}
+
+/* Logout button */
+.logout-btn {
+    background: #dc2626;
+    color: white;
+}
+
+.logout-btn:hover {
+    background: #b91c1c;
+    transform: translateY(-2px);
+    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
 }
 
 .dashboard-grid {