diff --git a/templates/mindmap.html b/templates/mindmap.html
index 99f2600..3bfc794 100644
--- a/templates/mindmap.html
+++ b/templates/mindmap.html
@@ -4,18 +4,34 @@
 
 {% block extra_css %}
 <style>
-  /* Spezifische Stile für die Mindmap-Seite */
-  #cy {
-    width: 100%;
-    height: 750px;
-    background-color: var(--bg-secondary);
-    transition: background-color 0.3s ease;
-    border-radius: 10px;
-    overflow: hidden;
-    position: relative;
+  /* Vollflächige Mindmap-Gestaltung */
+  html, body {
+    height: 100%;
+    overflow-x: hidden;
+    margin: 0;
+    padding: 0;
   }
   
-  /* Hintergrundraster für wissenschaftliches Aussehen */
+  /* Container für die vollflächige Mindmap */
+  .mindmap-fullscreen-container {
+    position: absolute;
+    top: 64px; /* Höhe der Navbar */
+    left: 0;
+    width: 100%;
+    height: calc(100vh - 64px);
+    z-index: 1;
+  }
+  
+  /* Cytoscape Container - vollflächig */
+  #cy {
+    width: 100%;
+    height: 100%;
+    background-color: #0a0e19; /* Dunkler Hintergrund für Universum */
+    position: relative;
+    overflow: hidden;
+  }
+  
+  /* Universum-Hintergrund */
   #cy::before {
     content: '';
     position: absolute;
@@ -24,149 +40,93 @@
     right: 0;
     bottom: 0;
     background-image: 
-      linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
-      linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
-    background-size: 20px 20px;
+      radial-gradient(1px, rgba(255, 255, 255, 0.3) 1px, transparent 1px),
+      radial-gradient(2px, rgba(255, 255, 255, 0.2) 1px, transparent 1px),
+      radial-gradient(3px, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
+    background-size: 60px 60px, 120px 120px, 180px 180px;
+    background-position: 0 0, 30px 30px, 60px 60px;
     pointer-events: none;
     z-index: 1;
+    animation: starsShimmer 60s linear infinite;
   }
   
-  .dark #cy::before {
-    background-image: 
-      linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
-      linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
+  @keyframes starsShimmer {
+    0% { opacity: 0.5; }
+    50% { opacity: 1; }
+    100% { opacity: 0.5; }
   }
   
-  /* Verbesserte Mindmap-Container-Stile */
-  .mindmap-container {
-    position: relative;
-    border-radius: 10px;
-    overflow: hidden;
-    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
-    transition: all 0.3s ease;
-    background-color: var(--bg-secondary);
+  /* Header-Overlay für Titel und Steuerung */
+  .mindmap-header-overlay {
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    padding: 1rem 2rem;
+    background: rgba(10, 14, 25, 0.7);
+    backdrop-filter: blur(5px);
+    z-index: 5;
+    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
   }
   
-  .dark .mindmap-container {
-    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
-    background-color: var(--bg-secondary);
-  }
-  
-  /* Flüssigere Übergänge für Mindmap-Elemente */
-  .mindmap-svg {
-    transition: background-color 0.5s ease;
-  }
-  
-  .node {
-    cursor: pointer;
-    transition: opacity 0.3s ease, transform 0.3s ease;
-  }
-  
-  .node:hover {
-    transform: scale(1.05);
-  }
-  
-  .node circle {
-    transition: r 0.3s ease, fill 0.3s ease, stroke 0.3s ease, stroke-width 0.3s ease, filter 0.3s ease;
-  }
-  
-  .node text {
-    transition: font-size 0.3s ease, fill 0.3s ease;
-    user-select: none;
-  }
-  
-  .link {
-    transition: stroke 0.3s ease, stroke-width 0.3s ease, opacity 0.3s ease;
-    pointer-events: none;
-  }
-  
-  /* Panel-Übergänge für Seitenleiste */
-  [data-sidebar] {
-    transition: opacity 0.3s ease, transform 0.3s ease, display 0s linear 0.3s;
-  }
-  
-  [data-sidebar].active {
-    transition: opacity 0.3s ease, transform 0.3s ease, display 0s linear;
-  }
-  
-  /* Mindmap-Toolbar mit verbessertem Erscheinungsbild */
+  /* Toolbar-Stil für das Universum-Design */
   .mindmap-toolbar {
     display: flex;
-    gap: 0.5rem;
+    gap: 1rem;
     flex-wrap: wrap;
     padding: 0.75rem;
-    background-color: var(--bg-secondary);
-    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
-    transition: background-color 0.3s ease;
-    position: relative;
+    background-color: rgba(15, 23, 42, 0.7);
+    backdrop-filter: blur(8px);
+    border-radius: 12px;
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    transition: all 0.3s ease;
+    position: absolute;
+    top: 20px;
+    left: 50%;
+    transform: translateX(-50%);
     z-index: 10;
+    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
   }
   
-  body:not(.dark) .mindmap-toolbar {
-    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
-  }
-  
-  /* Verbesserte Button-Stile für Mindmap-Toolbar */
+  /* Button-Stil */
   .mindmap-action-btn {
     display: flex;
     align-items: center;
     gap: 0.35rem;
     padding: 0.35rem 0.7rem;
     font-size: 0.8rem;
-    border-radius: 0.25rem;
-    background-color: rgba(79, 70, 229, 0.1);
-    color: #4f46e5;
-    border: 1px solid rgba(79, 70, 229, 0.2);
+    border-radius: 8px;
+    background-color: rgba(139, 92, 246, 0.2);
+    color: rgba(255, 255, 255, 0.9);
+    border: 1px solid rgba(139, 92, 246, 0.4);
     cursor: pointer;
     transition: all 0.2s ease;
   }
   
-  .dark .mindmap-action-btn {
-    background-color: rgba(79, 70, 229, 0.15);
-    border-color: rgba(79, 70, 229, 0.3);
-  }
-  
   .mindmap-action-btn:hover {
-    background-color: rgba(79, 70, 229, 0.2);
+    background-color: rgba(139, 92, 246, 0.35);
     transform: translateY(-1px);
+    box-shadow: 0 0 12px rgba(139, 92, 246, 0.5);
   }
   
-  .mindmap-action-btn:active {
-    transform: translateY(0);
-  }
-  
-  /* Verbesserte Seitenleisten-Panels mit Animation */
-  .sidebar-panel {
-    transition: all 0.3s ease-in-out;
-  }
-  
-  .sidebar-panel.hidden {
-    opacity: 0;
-    transform: translateY(10px);
-  }
-  
-  .sidebar-panel.visible {
-    opacity: 1;
-    transform: translateY(0);
-  }
-  
-  /* Info-Panel anpassungen */
+  /* Info-Panel im Universum-Stil */
   .mindmap-info-panel {
     position: absolute;
     right: 1rem;
     top: 5rem;
     width: 280px;
-    background-color: rgba(15, 23, 42, 0.85);
-    border-radius: 8px;
-    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
-    padding: 1rem;
+    background-color: rgba(10, 14, 25, 0.8);
+    border-radius: 12px;
+    box-shadow: 0 0 25px rgba(139, 92, 246, 0.3);
+    border: 1px solid rgba(139, 92, 246, 0.3);
+    padding: 1.25rem;
     color: #f1f5f9;
     opacity: 0;
     transform: translateX(20px);
     transition: all 0.3s ease;
     pointer-events: none;
     z-index: 10;
-    backdrop-filter: blur(4px);
+    backdrop-filter: blur(10px);
   }
   
   .mindmap-info-panel.visible {
@@ -180,214 +140,267 @@
     font-weight: 600;
     margin-bottom: 0.75rem;
     padding-bottom: 0.5rem;
-    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+    border-bottom: 1px solid rgba(139, 92, 246, 0.3);
+    color: rgba(255, 255, 255, 0.95);
   }
   
-  .info-panel-description {
-    font-size: 0.875rem;
+  /* Kosmische Knoten-Stile */
+  .node {
+    transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
+  }
+  
+  .node circle {
+    transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
+    filter: drop-shadow(0 0 8px rgba(var(--node-color, 139, 92, 246), 0.7));
+  }
+  
+  .node:hover circle {
+    filter: drop-shadow(0 0 15px rgba(var(--node-color, 139, 92, 246), 0.9));
+  }
+  
+  .node text {
+    transition: all 0.3s ease;
+    filter: drop-shadow(0 0 2px rgba(0, 0, 0, 0.9));
+  }
+  
+  /* Verbindungs-Stil */
+  .link {
+    stroke: rgba(255, 255, 255, 0.3);
+    stroke-dasharray: 5, 5;
+    stroke-width: 1;
+    transition: all 0.5s ease;
+  }
+  
+  .link:hover {
+    stroke: rgba(139, 92, 246, 0.7);
+    stroke-width: 2;
+    stroke-dasharray: none;
+    filter: drop-shadow(0 0 3px rgba(139, 92, 246, 0.7));
+  }
+  
+  /* Seitenleiste schwebend */ 
+  .sidebar-container {
+    position: absolute;
+    right: 1rem;
+    top: 120px;
+    width: 320px;
+    z-index: 10;
+    max-height: calc(100vh - 200px);
+    overflow-y: auto;
+    overflow-x: hidden;
+    scrollbar-width: thin;
+    scrollbar-color: rgba(139, 92, 246, 0.5) rgba(15, 23, 42, 0.2);
+    padding-right: 0.5rem;
+  }
+  
+  .sidebar-container::-webkit-scrollbar {
+    width: 6px;
+  }
+  
+  .sidebar-container::-webkit-scrollbar-track {
+    background: rgba(15, 23, 42, 0.2);
+    border-radius: 10px;
+  }
+  
+  .sidebar-container::-webkit-scrollbar-thumb {
+    background-color: rgba(139, 92, 246, 0.5);
+    border-radius: 10px;
+  }
+  
+  /* Sidebar-Panel im Universum-Stil */
+  .sidebar-panel {
+    background-color: rgba(15, 23, 42, 0.75);
+    border-radius: 12px;
+    backdrop-filter: blur(10px);
+    border: 1px solid rgba(139, 92, 246, 0.2);
+    padding: 1.25rem;
     margin-bottom: 1rem;
-    line-height: 1.5;
+    color: rgba(255, 255, 255, 0.9);
+    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
   }
   
-  .node-navigation-title {
-    font-size: 0.9rem;
-    font-weight: 500;
-    margin-bottom: 0.5rem;
-  }
-  
-  .node-links {
-    display: flex;
-    flex-wrap: wrap;
-    gap: 0.5rem;
-  }
-  
-  .node-link {
-    display: inline-block;
-    padding: 0.25rem 0.5rem;
-    font-size: 0.75rem;
-    border-radius: 4px;
-    cursor: pointer;
-    transition: transform 0.2s ease;
-    color: white;
-  }
-  
-  .node-link:hover {
+  .sidebar-panel:hover {
+    border-color: rgba(139, 92, 246, 0.4);
+    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(139, 92, 246, 0.3);
     transform: translateY(-2px);
   }
-  
-  /* Zusätzliches Layout */
-  .mindmap-section {
-    display: grid;
-    grid-template-columns: 1fr;
-    gap: 1.5rem;
-  }
-  
-  @media (min-width: 1024px) {
-    .mindmap-section {
-      grid-template-columns: 2fr 1fr;
-    }
+
+  /* Footer Positionierung ganz unten */
+  .page-footer {
+    position: relative;
+    width: 100%;
+    margin-top: calc(100vh - 64px); /* Sicherstellen, dass der Footer nach der vollen Höhe kommt */
+    z-index: 2;
+    background-color: rgba(10, 14, 25, 0.9);
+    backdrop-filter: blur(10px);
+    border-top: 1px solid rgba(139, 92, 246, 0.3);
   }
 </style>
 {% endblock %}
 
 {% block content %}
-<div class="container mx-auto px-4 py-8">
-  <div class="flex flex-col lg:flex-row gap-8">
-    <!-- Hauptinhalt -->
-    <div class="w-full lg:w-3/4">
-      <!-- Mindmap-Titelbereich -->
-      <div class="mb-6">
-        <h1 class="text-3xl font-bold mb-2 mystical-glow"
-            x-bind:class="darkMode ? 'text-white' : 'text-gray-800'">
-          Wissenslandkarte
-        </h1>
-        <p class="opacity-80 text-lg"
-           x-bind:class="darkMode ? 'text-gray-300' : 'text-gray-600'">
-          Visualisiere die Verbindungen zwischen Gedanken und Konzepten
-        </p>
-      </div>
+<!-- Vollflächige Mindmap -->
+<div class="mindmap-fullscreen-container">
+  <!-- Header-Overlay -->
+  <div class="mindmap-header-overlay">
+    <h1 class="text-3xl font-bold mb-2 mystical-glow text-white">
+      Wissenslandkarte
+    </h1>
+    <p class="opacity-80 text-lg text-gray-300">
+      Visualisiere die Verbindungen zwischen Gedanken und Konzepten
+    </p>
+  </div>
 
-      <!-- Mindmap-Container -->
-      <div class="mindmap-container">
-        <!-- Toolbar -->
-        <div class="mindmap-toolbar">
-          <button id="fit-btn" class="mindmap-action-btn" title="An Fenstergröße anpassen">
-            <i class="fa-solid fa-expand"></i>
-            <span>Anpassen</span>
-          </button>
-          <button id="reset-btn" class="mindmap-action-btn" title="Ansicht zurücksetzen">
-            <i class="fa-solid fa-undo"></i>
-            <span>Zurücksetzen</span>
-          </button>
-          <button id="zoom-in-btn" class="mindmap-action-btn" title="Einzoomen">
-            <i class="fa-solid fa-magnifying-glass-plus"></i>
-            <span>Zoom+</span>
-          </button>
-          <button id="zoom-out-btn" class="mindmap-action-btn" title="Auszoomen">
-            <i class="fa-solid fa-magnifying-glass-minus"></i>
-            <span>Zoom-</span>
-          </button>
-          <button id="toggle-labels-btn" class="mindmap-action-btn" title="Labels ein/ausblenden">
-            <i class="fa-solid fa-tags"></i>
-            <span>Labels</span>
-          </button>
-          <button id="fullscreen-btn" class="mindmap-action-btn" title="Vollbildmodus">
-            <i class="fa-solid fa-expand"></i>
-            <span>Vollbild</span>
-          </button>
-        </div>
-
-        <!-- Hauptvisualisierung -->
-        <div id="cy"></div>
-
-        <!-- Info-Panel -->
-        <div id="node-info-panel" class="mindmap-info-panel">
-          <h4 class="info-panel-title">Knoteninfo</h4>
-          <p id="node-description" class="info-panel-description">Wählen Sie einen Knoten aus...</p>
-          
-          <div class="node-navigation">
-            <h5 class="node-navigation-title">Verknüpfte Knoten</h5>
-            <div id="connected-nodes" class="node-links">
-              <!-- Wird dynamisch befüllt -->
-            </div>
-          </div>
-        </div>
-      </div>
+  <!-- Mindmap-Container -->
+  <div class="mindmap-container">
+    <!-- Toolbar -->
+    <div class="mindmap-toolbar">
+      <button id="fit-btn" class="mindmap-action-btn" title="An Fenstergröße anpassen">
+        <i class="fa-solid fa-expand"></i>
+        <span>Anpassen</span>
+      </button>
+      <button id="reset-btn" class="mindmap-action-btn" title="Ansicht zurücksetzen">
+        <i class="fa-solid fa-undo"></i>
+        <span>Zurücksetzen</span>
+      </button>
+      <button id="zoom-in-btn" class="mindmap-action-btn" title="Einzoomen">
+        <i class="fa-solid fa-magnifying-glass-plus"></i>
+        <span>Zoom+</span>
+      </button>
+      <button id="zoom-out-btn" class="mindmap-action-btn" title="Auszoomen">
+        <i class="fa-solid fa-magnifying-glass-minus"></i>
+        <span>Zoom-</span>
+      </button>
+      <button id="toggle-labels-btn" class="mindmap-action-btn" title="Labels ein/ausblenden">
+        <i class="fa-solid fa-tags"></i>
+        <span>Labels</span>
+      </button>
+      <button id="fullscreen-btn" class="mindmap-action-btn" title="Vollbildmodus">
+        <i class="fa-solid fa-expand"></i>
+        <span>Vollbild</span>
+      </button>
     </div>
 
-    <!-- Seitenleiste -->
-    <div class="w-full lg:w-1/4 space-y-6">
-      <!-- Nutzlänge -->
-      <div class="p-5 rounded-lg overflow-hidden border transition-colors duration-300"
-           x-bind:class="darkMode ? 'bg-slate-800/40 border-slate-700/50' : 'bg-white border-slate-200'"
-           data-sidebar="about-mindmap">
-        <h3 class="text-xl font-semibold mb-3"
-            x-bind:class="darkMode ? 'text-white' : 'text-gray-800'">
-          <i class="fa-solid fa-circle-info text-purple-400 mr-2"></i>Über die Mindmap
-        </h3>
-        <div x-bind:class="darkMode ? 'text-gray-300' : 'text-gray-600'">
-          <p class="mb-2">Die interaktive Wissenslandkarte zeigt Verbindungen zwischen verschiedenen Gedanken und Konzepten.</p>
-          <p class="mb-2">Sie können:</p>
-          <ul class="list-disc pl-5 space-y-1 text-sm">
-            <li>Knoten auswählen, um Details zu sehen</li>
-            <li>Zoomen (Mausrad oder Pinch-Geste)</li>
-            <li>Die Karte verschieben (Drag & Drop)</li>
-            <li>Die Toolbar nutzen für weitere Aktionen</li>
-          </ul>
-        </div>
-      </div>
+    <!-- Hauptvisualisierung -->
+    <div id="cy"></div>
 
-      <!-- Kategorienlegende -->
-      <div class="p-5 rounded-lg overflow-hidden border transition-colors duration-300"
-           x-bind:class="darkMode ? 'bg-slate-800/40 border-slate-700/50' : 'bg-white border-slate-200'"
-           data-sidebar="categories">
-        <h3 class="text-xl font-semibold mb-3"
-            x-bind:class="darkMode ? 'text-white' : 'text-gray-800'">
-          <i class="fa-solid fa-palette text-purple-400 mr-2"></i>Kategorien
-        </h3>
-        <div id="category-legend" class="space-y-2 text-sm"
-             x-bind:class="darkMode ? 'text-gray-300' : 'text-gray-600'">
-          <!-- Wird dynamisch befüllt -->
-          <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-indigo-600 mr-2"></span> Philosophie</div>
-          <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-emerald-600 mr-2"></span> Wissenschaft</div>
-          <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-indigo-500 mr-2"></span> Technologie</div>
-          <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-violet-500 mr-2"></span> Künste</div>
-          <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-cyan-700 mr-2"></span> Psychologie</div>
-        </div>
-      </div>
+    <!-- Info-Panel -->
+    <div id="node-info-panel" class="mindmap-info-panel">
+      <h4 class="info-panel-title">Knoteninfo</h4>
+      <p id="node-description" class="info-panel-description">Wählen Sie einen Knoten aus...</p>
       
-      <!-- Knotenbeschreibung (anfangs ausgeblendet) -->
-      <div class="p-5 rounded-lg overflow-hidden border transition-colors duration-300 hidden"
-           x-bind:class="darkMode ? 'bg-slate-800/40 border-slate-700/50' : 'bg-white border-slate-200'"
-           data-sidebar="node-description">
-        <h3 class="text-xl font-semibold mb-3"
-            x-bind:class="darkMode ? 'text-white' : 'text-gray-800'"
-            data-node-title>Knotenbeschreibung</h3>
-        <div class="space-y-3" x-bind:class="darkMode ? 'text-gray-300' : 'text-gray-600'">
-          <p class="text-sm leading-relaxed" data-node-description>
-            Wählen Sie einen Knoten in der Mindmap aus, um dessen Beschreibung hier anzuzeigen.
-          </p>
-          <div class="pt-2 mt-2 border-t" x-bind:class="darkMode ? 'border-slate-700/50' : 'border-slate-200'">
-            <button class="text-xs px-3 py-1.5 rounded bg-indigo-100 text-indigo-700 hover:bg-indigo-200 transition-colors dark:bg-indigo-900/30 dark:text-indigo-300 dark:hover:bg-indigo-800/40"
-                  onclick="window.mindmapInstance && window.mindmapInstance.selectedNode && window.mindmapInstance.centerNodeInView(window.mindmapInstance.selectedNode)">
-              <i class="fa-solid fa-crosshairs mr-1"></i> Knoten zentrieren
-            </button>
-          </div>
+      <div class="node-navigation">
+        <h5 class="node-navigation-title">Verknüpfte Knoten</h5>
+        <div id="connected-nodes" class="node-links">
+          <!-- Wird dynamisch befüllt -->
         </div>
       </div>
-
-      <!-- Meine Mindmaps -->
-      {% if current_user.is_authenticated %}
-      <div class="p-5 rounded-lg overflow-hidden border transition-colors duration-300"
-           x-bind:class="darkMode ? 'bg-slate-800/40 border-slate-700/50' : 'bg-white border-slate-200'">
-        <h3 class="text-xl font-semibold mb-3"
-            x-bind:class="darkMode ? 'text-white' : 'text-gray-800'">
-          <i class="fa-solid fa-map text-purple-400 mr-2"></i>Meine Mindmaps
-        </h3>
-        <div class="mb-3">
-          <a href="{{ url_for('create_mindmap') }}" class="w-full inline-block py-2 px-4 bg-purple-600 hover:bg-purple-700 text-white rounded-lg text-center text-sm font-medium transition-colors">
-            <i class="fa-solid fa-plus mr-1"></i> Neue Mindmap erstellen
-          </a>
-        </div>
-        
-        <div class="space-y-2 max-h-60 overflow-y-auto"
-             x-bind:class="darkMode ? 'text-gray-300' : 'text-gray-600'">
-          {% if user_mindmaps %}
-            {% for mindmap in user_mindmaps %}
-            <a href="{{ url_for('user_mindmap', mindmap_id=mindmap.id) }}" class="block p-2 hover:bg-purple-500/20 rounded-lg transition-colors">
-              <div class="text-sm font-medium">{{ mindmap.name }}</div>
-              <div class="text-xs opacity-70">{{ mindmap.nodes|length }} Knoten</div>
-            </a>
-            {% endfor %}
-          {% else %}
-            <p class="text-sm italic">Sie haben noch keine eigenen Mindmaps erstellt.</p>
-          {% endif %}
-        </div>
-      </div>
-      {% endif %}
     </div>
   </div>
+
+  <!-- Schwebende Seitenleiste -->
+  <div class="sidebar-container">
+    <!-- Nutzungsinfo -->
+    <div class="sidebar-panel" data-sidebar="about-mindmap">
+      <h3 class="text-xl font-semibold mb-3 text-white">
+        <i class="fa-solid fa-circle-info text-purple-400 mr-2"></i>Über die Mindmap
+      </h3>
+      <div class="text-gray-300">
+        <p class="mb-2">Die interaktive Wissenslandkarte zeigt Verbindungen zwischen verschiedenen Gedanken und Konzepten.</p>
+        <p class="mb-2">Sie können:</p>
+        <ul class="list-disc pl-5 space-y-1 text-sm">
+          <li>Knoten auswählen, um Details zu sehen</li>
+          <li>Zoomen (Mausrad oder Pinch-Geste)</li>
+          <li>Die Karte verschieben (Drag & Drop)</li>
+          <li>Die Toolbar nutzen für weitere Aktionen</li>
+        </ul>
+      </div>
+    </div>
+
+    <!-- Kategorienlegende -->
+    <div class="sidebar-panel" data-sidebar="categories">
+      <h3 class="text-xl font-semibold mb-3 text-white">
+        <i class="fa-solid fa-palette text-purple-400 mr-2"></i>Kategorien
+      </h3>
+      <div id="category-legend" class="space-y-2 text-sm text-gray-300">
+        <!-- Wird dynamisch befüllt -->
+        <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-indigo-600 mr-2 glow-effect"></span> Philosophie</div>
+        <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-emerald-600 mr-2 glow-effect"></span> Wissenschaft</div>
+        <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-indigo-500 mr-2 glow-effect"></span> Technologie</div>
+        <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-violet-500 mr-2 glow-effect"></span> Künste</div>
+        <div class="flex items-center"><span class="w-3 h-3 rounded-full bg-cyan-700 mr-2 glow-effect"></span> Psychologie</div>
+      </div>
+    </div>
+    
+    <!-- Knotenbeschreibung -->
+    <div class="sidebar-panel hidden" data-sidebar="node-description">
+      <h3 class="text-xl font-semibold mb-3 text-white" data-node-title>
+        Knotenbeschreibung
+      </h3>
+      <div class="space-y-3 text-gray-300">
+        <p class="text-sm leading-relaxed" data-node-description>
+          Wählen Sie einen Knoten in der Mindmap aus, um dessen Beschreibung hier anzuzeigen.
+        </p>
+        <div class="pt-2 mt-2 border-t border-slate-700/50">
+          <button class="text-xs px-3 py-1.5 rounded bg-indigo-900/30 text-indigo-300 hover:bg-indigo-800/40 transition-colors"
+                onclick="window.mindmapInstance && window.mindmapInstance.selectedNode && window.mindmapInstance.centerNodeInView(window.mindmapInstance.selectedNode)">
+            <i class="fa-solid fa-crosshairs mr-1"></i> Knoten zentrieren
+          </button>
+        </div>
+      </div>
+    </div>
+
+    <!-- Meine Mindmaps -->
+    {% if current_user.is_authenticated %}
+    <div class="sidebar-panel">
+      <h3 class="text-xl font-semibold mb-3 text-white">
+        <i class="fa-solid fa-map text-purple-400 mr-2"></i>Meine Mindmaps
+      </h3>
+      <div class="mb-3">
+        <a href="{{ url_for('create_mindmap') }}" class="w-full inline-block py-2 px-4 bg-purple-600 hover:bg-purple-700 text-white rounded-lg text-center text-sm font-medium transition-colors">
+          <i class="fa-solid fa-plus mr-1"></i> Neue Mindmap erstellen
+        </a>
+      </div>
+      
+      <div class="space-y-2 max-h-60 overflow-y-auto text-gray-300">
+        {% if user_mindmaps %}
+          {% for mindmap in user_mindmaps %}
+          <a href="{{ url_for('user_mindmap', mindmap_id=mindmap.id) }}" class="block p-2 hover:bg-purple-500/20 rounded-lg transition-colors">
+            <div class="text-sm font-medium">{{ mindmap.name }}</div>
+            <div class="text-xs opacity-70">{{ mindmap.nodes|length }} Knoten</div>
+          </a>
+          {% endfor %}
+        {% else %}
+          <p class="text-sm italic">Sie haben noch keine eigenen Mindmaps erstellt.</p>
+        {% endif %}
+      </div>
+    </div>
+    {% endif %}
+  </div>
 </div>
+
+<!-- Footer - Position ganz unten -->
+<footer class="page-footer py-6 px-4">
+  <div class="container mx-auto">
+    <div class="flex flex-col md:flex-row justify-between items-center">
+      <div class="mb-4 md:mb-0">
+        <p class="text-sm text-gray-400">&copy; 2023 Systades. Alle Rechte vorbehalten.</p>
+      </div>
+      <div class="flex space-x-4">
+        <a href="#" class="text-gray-400 hover:text-purple-400 transition-colors">
+          <i class="fab fa-github"></i>
+        </a>
+        <a href="#" class="text-gray-400 hover:text-purple-400 transition-colors">
+          <i class="fab fa-twitter"></i>
+        </a>
+        <a href="#" class="text-gray-400 hover:text-purple-400 transition-colors">
+          <i class="fab fa-linkedin"></i>
+        </a>
+      </div>
+    </div>
+  </div>
+</footer>
 {% endblock %}
 
 {% block extra_js %}
@@ -399,4 +412,75 @@
 <script src="{{ url_for('static', filename='js/update_mindmap.js') }}"></script>
 <!-- Verbesserte Interaktion -->
 <script src="{{ url_for('static', filename='js/mindmap-interaction.js') }}"></script>
+
+<!-- Universum-Stil für Mindmap -->
+<script>
+  document.addEventListener('DOMContentLoaded', function() {
+    // Spezielle Anpassungen für das Universum-Design
+    if (window.cy) {
+      // Planeteneffekt für Knoten hinzufügen
+      cy.style()
+        .selector('node')
+        .style({
+          'width': 'mapData(score, 0, 10, 30, 80)',
+          'height': 'mapData(score, 0, 10, 30, 80)',
+          'background-color': 'data(color)',
+          'border-width': 2,
+          'border-color': 'white',
+          'border-opacity': 0.3,
+          'box-shadow': '0 0 15px 2px #8b5cf6',
+          'text-outline-width': 2,
+          'text-outline-color': '#0a0e19',
+          'text-outline-opacity': 0.9,
+          'font-size': 12
+        })
+        .selector('edge')
+        .style({
+          'width': 1.5,
+          'line-color': 'rgba(255, 255, 255, 0.3)',
+          'line-style': 'dashed',
+          'curve-style': 'bezier',
+          'target-arrow-shape': 'triangle',
+          'target-arrow-color': 'rgba(255, 255, 255, 0.6)',
+          'arrow-scale': 0.7
+        })
+        .selector(':selected')
+        .style({
+          'border-width': 4,
+          'border-color': '#f8f32b',
+          'border-opacity': 0.8,
+          'box-shadow': '0 0 20px 5px #f8f32b'
+        })
+        .update();
+      
+      // Glow-Effekt und Bewegung für Universum-Look
+      cy.nodes().forEach(node => {
+        // Zufällige "Planeten"-Größe basierend auf Typ
+        const score = Math.floor(Math.random() * 10) + 1;
+        node.data('score', score);
+        
+        // Subtile Animation für Schwebeeffekt
+        const originalPos = node.position();
+        
+        setInterval(() => {
+          const offsetX = (Math.random() - 0.5) * 2;
+          const offsetY = (Math.random() - 0.5) * 2;
+          
+          node.animate({
+            position: { x: originalPos.x + offsetX, y: originalPos.y + offsetY },
+            duration: 3000,
+            easing: 'ease-in-out',
+            complete: function() {
+              node.animate({
+                position: { x: originalPos.x, y: originalPos.y },
+                duration: 3000,
+                easing: 'ease-in-out'
+              });
+            }
+          });
+        }, 8000);
+      });
+    }
+  });
+</script>
 {% endblock %}
\ No newline at end of file