Enhance footer layout and mindmap functionality: Revamp footer structure with improved grid layout, add social media icons, and implement a newsletter subscription form. Update mindmap template to use SVG background, streamline script loading, and enhance visualization initialization with new event handlers for user interactions.

website/models.py

@@ -0,0 +1,230 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from flask_sqlalchemy import SQLAlchemy
+from flask_login import UserMixin
+from datetime import datetime
+from werkzeug.security import generate_password_hash, check_password_hash
+from enum import Enum
+
+db = SQLAlchemy()
+
+# Beziehungstypen für Gedankenverknüpfungen
+class RelationType(Enum):
+    SUPPORTS = "stützt"
+    CONTRADICTS = "widerspricht"
+    BUILDS_UPON = "baut auf auf"
+    GENERALIZES = "verallgemeinert"
+    SPECIFIES = "spezifiziert"
+    INSPIRES = "inspiriert"
+
+# Beziehungstabelle für viele-zu-viele Beziehung zwischen MindMapNodes
+node_relationship = db.Table('node_relationship',
+    db.Column('parent_id', db.Integer, db.ForeignKey('mind_map_node.id'), primary_key=True),
+    db.Column('child_id', db.Integer, db.ForeignKey('mind_map_node.id'), primary_key=True)
+)
+
+# Beziehungstabelle für öffentliche Knoten und Gedanken
+node_thought_association = db.Table('node_thought_association',
+    db.Column('node_id', db.Integer, db.ForeignKey('mind_map_node.id'), primary_key=True),
+    db.Column('thought_id', db.Integer, db.ForeignKey('thought.id'), primary_key=True)
+)
+
+# Beziehungstabelle für Benutzer-spezifische Mindmap-Knoten und Gedanken
+user_mindmap_thought_association = db.Table('user_mindmap_thought_association',
+    db.Column('user_mindmap_id', db.Integer, db.ForeignKey('user_mindmap.id'), primary_key=True),
+    db.Column('thought_id', db.Integer, db.ForeignKey('thought.id'), primary_key=True)
+)
+
+# Beziehungstabelle für Benutzer-Bookmarks von Gedanken
+user_thought_bookmark = db.Table('user_thought_bookmark',
+    db.Column('user_id', db.Integer, db.ForeignKey('user.id'), primary_key=True),
+    db.Column('thought_id', db.Integer, db.ForeignKey('thought.id'), primary_key=True),
+    db.Column('created_at', db.DateTime, default=datetime.utcnow)
+)
+
+class User(UserMixin, db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    username = db.Column(db.String(80), unique=True, nullable=False)
+    email = db.Column(db.String(120), unique=True, nullable=False)
+    password_hash = db.Column(db.String(128))
+    is_admin = db.Column(db.Boolean, default=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    last_login = db.Column(db.DateTime)
+    avatar = db.Column(db.String(200))
+    bio = db.Column(db.Text)
+    
+    # Beziehungen
+    thoughts = db.relationship('Thought', backref='author', lazy=True)
+    comments = db.relationship('Comment', backref='author', lazy=True)
+    user_mindmaps = db.relationship('UserMindmap', backref='user', lazy=True)
+    mindmap_notes = db.relationship('MindmapNote', backref='user', lazy=True)
+    bookmarked_thoughts = db.relationship('Thought', secondary=user_thought_bookmark, 
+                                         backref=db.backref('bookmarked_by', lazy='dynamic'))
+    
+    def set_password(self, password):
+        self.password_hash = generate_password_hash(password)
+        
+    def check_password(self, password):
+        return check_password_hash(self.password_hash, password)
+
+class Category(db.Model):
+    """Wissenschaftliche Kategorien für die Gliederung der öffentlichen Mindmap"""
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(100), unique=True, nullable=False)
+    description = db.Column(db.Text)
+    color_code = db.Column(db.String(7))  # Hex color
+    icon = db.Column(db.String(50))
+    parent_id = db.Column(db.Integer, db.ForeignKey('category.id'), nullable=True)
+    
+    # Beziehungen
+    children = db.relationship('Category', backref=db.backref('parent', remote_side=[id]))
+    nodes = db.relationship('MindMapNode', backref='category', lazy=True)
+
+class MindMapNode(db.Model):
+    """Öffentliche Mindmap-Knoten, die für alle Benutzer sichtbar sind"""
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(100), nullable=False)
+    description = db.Column(db.Text)
+    color_code = db.Column(db.String(7))
+    icon = db.Column(db.String(50))
+    is_public = db.Column(db.Boolean, default=True)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    created_by_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=True)
+    category_id = db.Column(db.Integer, db.ForeignKey('category.id'), nullable=True)
+    
+    # Beziehungen für Baumstruktur (mehrere Eltern möglich)
+    parents = db.relationship(
+        'MindMapNode', 
+        secondary=node_relationship,
+        primaryjoin=(node_relationship.c.child_id == id),
+        secondaryjoin=(node_relationship.c.parent_id == id),
+        backref=db.backref('children', lazy='dynamic'),
+        lazy='dynamic'
+    )
+    
+    # Beziehungen zu Gedanken
+    thoughts = db.relationship('Thought', 
+                              secondary=node_thought_association,
+                              backref=db.backref('nodes', lazy='dynamic'))
+    
+    # Beziehung zum Ersteller
+    created_by = db.relationship('User', backref='created_nodes')
+
+class UserMindmap(db.Model):
+    """Benutzerspezifische Mindmap, die vom Benutzer personalisierbar ist"""
+    id = db.Column(db.Integer, primary_key=True)
+    name = db.Column(db.String(100), nullable=False)
+    description = db.Column(db.Text)
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    last_modified = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    is_private = db.Column(db.Boolean, default=True)
+    
+    # Beziehungen zu öffentlichen Knoten
+    public_nodes = db.relationship('MindMapNode', 
+                                  secondary='user_mindmap_node',
+                                  backref=db.backref('in_user_mindmaps', lazy='dynamic'))
+    
+    # Beziehungen zu Gedanken
+    thoughts = db.relationship('Thought', 
+                              secondary=user_mindmap_thought_association,
+                              backref=db.backref('in_user_mindmaps', lazy='dynamic'))
+    
+    # Notizen zu dieser Mindmap
+    notes = db.relationship('MindmapNote', backref='mindmap', lazy=True)
+
+# Beziehungstabelle für benutzerorientierte Mindmaps und öffentliche Knoten
+class UserMindmapNode(db.Model):
+    """Speichert die Beziehung zwischen Benutzer-Mindmaps und öffentlichen Knoten inkl. Position"""
+    user_mindmap_id = db.Column(db.Integer, db.ForeignKey('user_mindmap.id'), primary_key=True)
+    node_id = db.Column(db.Integer, db.ForeignKey('mind_map_node.id'), primary_key=True)
+    x_position = db.Column(db.Float, default=0)  # Position X auf der Mindmap
+    y_position = db.Column(db.Float, default=0)  # Position Y auf der Mindmap
+    scale = db.Column(db.Float, default=1.0)     # Größe des Knotens
+    added_at = db.Column(db.DateTime, default=datetime.utcnow)
+
+class MindmapNote(db.Model):
+    """Private Notizen der Benutzer zu ihrer Mindmap"""
+    id = db.Column(db.Integer, primary_key=True)
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    mindmap_id = db.Column(db.Integer, db.ForeignKey('user_mindmap.id'), nullable=False)
+    node_id = db.Column(db.Integer, db.ForeignKey('mind_map_node.id'), nullable=True)
+    thought_id = db.Column(db.Integer, db.ForeignKey('thought.id'), nullable=True)
+    content = db.Column(db.Text, nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    last_modified = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    color_code = db.Column(db.String(7), default="#FFF59D")  # Farbe der Notiz
+
+class Thought(db.Model):
+    """Gedanken und Inhalte, die in der Mindmap verknüpft werden können"""
+    id = db.Column(db.Integer, primary_key=True)
+    title = db.Column(db.String(200), nullable=False)
+    content = db.Column(db.Text, nullable=False)
+    abstract = db.Column(db.Text)
+    keywords = db.Column(db.String(500))
+    color_code = db.Column(db.String(7))  # Hex color code
+    source_type = db.Column(db.String(50))  # PDF, Markdown, Text etc.
+    branch = db.Column(db.String(100), nullable=False)
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    last_modified = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    # Beziehungen
+    comments = db.relationship('Comment', backref='thought', lazy=True, cascade="all, delete-orphan")
+    ratings = db.relationship('ThoughtRating', backref='thought', lazy=True)
+    
+    outgoing_relations = db.relationship(
+        'ThoughtRelation',
+        foreign_keys='ThoughtRelation.source_id',
+        backref='source_thought',
+        lazy=True
+    )
+    incoming_relations = db.relationship(
+        'ThoughtRelation',
+        foreign_keys='ThoughtRelation.target_id',
+        backref='target_thought',
+        lazy=True
+    )
+    
+    @property
+    def average_rating(self):
+        if not self.ratings:
+            return 0
+        return sum(r.relevance_score for r in self.ratings) / len(self.ratings)
+
+class ThoughtRelation(db.Model):
+    """Beziehungen zwischen Gedanken"""
+    id = db.Column(db.Integer, primary_key=True)
+    source_id = db.Column(db.Integer, db.ForeignKey('thought.id'), nullable=False)
+    target_id = db.Column(db.Integer, db.ForeignKey('thought.id'), nullable=False)
+    relation_type = db.Column(db.Enum(RelationType), nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    created_by_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    
+    # Beziehung zum Ersteller
+    created_by = db.relationship('User', backref='created_relations')
+
+class ThoughtRating(db.Model):
+    """Bewertungen von Gedanken durch Benutzer"""
+    id = db.Column(db.Integer, primary_key=True)
+    thought_id = db.Column(db.Integer, db.ForeignKey('thought.id'), nullable=False)
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    relevance_score = db.Column(db.Integer, nullable=False)  # 1-5
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    
+    __table_args__ = (
+        db.UniqueConstraint('thought_id', 'user_id', name='unique_thought_rating'),
+    )
+    
+    # Beziehung zum Benutzer
+    user = db.relationship('User', backref='ratings')
+
+class Comment(db.Model):
+    """Kommentare zu Gedanken"""
+    id = db.Column(db.Integer, primary_key=True)
+    content = db.Column(db.Text, nullable=False)
+    thought_id = db.Column(db.Integer, db.ForeignKey('thought.id'), nullable=False)
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), nullable=False)
+    created_at = db.Column(db.DateTime, default=datetime.utcnow)
+    last_modified = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow) 

website/templates/base.html

@@ -734,56 +734,119 @@
 
         <!-- Footer -->
         <footer class="mt-12 py-10 transition-colors duration-300 rounded-t-3xl mx-4 sm:mx-6 md:mx-8"
-                :class="darkMode ? 'bg-gray-900/40 backdrop-blur-md border border-white/10' : 'bg-white/40 backdrop-blur-md border border-gray-200/50'">
+                :class="darkMode ? 'bg-gray-900/60 backdrop-blur-xl border-t border-white/10' : 'bg-white/60 backdrop-blur-xl border-t border-gray-200/50'">
             <div class="container mx-auto px-4">
-                <div class="flex flex-col md:flex-row justify-between items-center md:items-start">
+                <div class="grid grid-cols-1 md:grid-cols-3 gap-10">
-                    <div class="mb-8 md:mb-0 text-center md:text-left">
+                    <!-- Logo und Beschreibung -->
-                        <a href="{{ url_for('index') }}" class="text-2xl font-bold gradient-text inline-block transform transition-transform hover:scale-105">Systades</a>
+                    <div class="text-center md:text-left flex flex-col">
-                        <p class="mt-3 text-sm max-w-sm"
+                        <a href="{{ url_for('index') }}" class="text-2xl font-bold mb-4 gradient-text inline-block transform transition-transform hover:scale-105">Systades</a>
-                           :class="darkMode ? 'text-gray-400' : 'text-gray-600'">Eine interaktive Plattform zum Visualisieren, Erforschen und Teilen von Wissen.</p>
+                        <p class="mt-2 text-sm max-w-md"
+                           :class="darkMode ? 'text-gray-300' : 'text-gray-600'">
+                           Eine interaktive Plattform zum Visualisieren, Erforschen und Teilen von Wissen und Gedanken in einem strukturierten Format.
+                        </p>
+                        <!-- Social Media Icons -->
+                        <div class="flex items-center space-x-4 mt-6 justify-center md:justify-start">
+                            <a href="#" class="transition-all duration-200 transform hover:scale-110 hover:-translate-y-1"
+                               :class="darkMode ? 'text-purple-400 hover:text-purple-300' : 'text-purple-600 hover:text-purple-500'">
+                                <i class="fab fa-twitter text-xl"></i>
+                            </a>
+                            <a href="#" class="transition-all duration-200 transform hover:scale-110 hover:-translate-y-1"
+                               :class="darkMode ? 'text-purple-400 hover:text-purple-300' : 'text-purple-600 hover:text-purple-500'">
+                                <i class="fab fa-linkedin text-xl"></i>
+                            </a>
+                            <a href="#" class="transition-all duration-200 transform hover:scale-110 hover:-translate-y-1"
+                               :class="darkMode ? 'text-purple-400 hover:text-purple-300' : 'text-purple-600 hover:text-purple-500'">
+                                <i class="fab fa-github text-xl"></i>
+                            </a>
+                            <a href="#" class="transition-all duration-200 transform hover:scale-110 hover:-translate-y-1"
+                               :class="darkMode ? 'text-purple-400 hover:text-purple-300' : 'text-purple-600 hover:text-purple-500'">
+                                <i class="fab fa-discord text-xl"></i>
+                            </a>
+                        </div>
                     </div>
                     
-                    <div class="flex flex-wrap justify-center md:justify-start space-x-4 sm:space-x-6 mb-8 md:mb-0">
+                    <!-- Links -->
-                        <a href="{{ url_for('impressum') }}"
+                    <div class="grid grid-cols-2 gap-8">
-                           class="transition-all duration-200 text-sm px-4 py-2.5 rounded-xl"
+                        <div class="flex flex-col space-y-3">
-                           :class="darkMode ? 'text-gray-400 hover:text-white hover:bg-purple-600/20 hover:shadow-md' : 'text-gray-700 hover:text-gray-900 hover:bg-purple-500/10 hover:shadow-sm'">
+                            <h3 class="font-semibold text-lg mb-2"
-                           <span class="flex items-center">
+                               :class="darkMode ? 'text-white' : 'text-gray-800'">Navigation</h3>
-                               <i class="fa-solid fa-info-circle mr-2 opacity-70"></i>
+                            <a href="{{ url_for('index') }}" class="text-sm transition-all duration-200"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
+                                Startseite
+                            </a>
+                            <a href="{{ url_for('mindmap') }}" class="text-sm transition-all duration-200"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
+                                Mindmap
+                            </a>
+                            {% if current_user.is_authenticated %}
+                            <a href="{{ url_for('profile') }}" class="text-sm transition-all duration-200"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
+                                Profil
+                            </a>
+                            <a href="{{ url_for('my_account') }}" class="text-sm transition-all duration-200"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
+                                Meine Merkliste
+                            </a>
+                            {% else %}
+                            <a href="{{ url_for('login') }}" class="text-sm transition-all duration-200"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
+                                Anmelden
+                            </a>
+                            <a href="{{ url_for('register') }}" class="text-sm transition-all duration-200"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
+                                Registrieren
+                            </a>
+                            {% endif %}
+                        </div>
+                        
+                        <div class="flex flex-col space-y-3">
+                            <h3 class="font-semibold text-lg mb-2"
+                               :class="darkMode ? 'text-white' : 'text-gray-800'">Rechtliches</h3>
+                            <a href="{{ url_for('impressum') }}" class="text-sm transition-all duration-200"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
                                 Impressum
-                           </span>
                             </a>
-                        <a href="{{ url_for('datenschutz') }}"
+                            <a href="{{ url_for('datenschutz') }}" class="text-sm transition-all duration-200"
-                           class="transition-all duration-200 text-sm px-4 py-2.5 rounded-xl"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
-                           :class="darkMode ? 'text-gray-400 hover:text-white hover:bg-purple-600/20 hover:shadow-md' : 'text-gray-700 hover:text-gray-900 hover:bg-purple-500/10 hover:shadow-sm'">
-                           <span class="flex items-center">
-                               <i class="fa-solid fa-shield-alt mr-2 opacity-70"></i>
                                 Datenschutz
-                           </span>
                             </a>
-                        <a href="{{ url_for('agb') }}"
+                            <a href="{{ url_for('agb') }}" class="text-sm transition-all duration-200"
-                           class="transition-all duration-200 text-sm px-4 py-2.5 rounded-xl"
+                               :class="darkMode ? 'text-gray-300 hover:text-white' : 'text-gray-600 hover:text-gray-900'">
-                           :class="darkMode ? 'text-gray-400 hover:text-white hover:bg-purple-600/20 hover:shadow-md' : 'text-gray-700 hover:text-gray-900 hover:bg-purple-500/10 hover:shadow-sm'">
-                           <span class="flex items-center">
-                               <i class="fa-solid fa-file-contract mr-2 opacity-70"></i>
                                 AGB
-                           </span>
                             </a>
                         </div>
-
-                    <!-- Optional: Social Media Links oder andere Elemente -->
-                    {#
-                    <div class="flex space-x-4">
-                        <a href="#" class="text-gray-400 hover:text-white transition-colors"><i class="fab fa-twitter"></i></a>
-                        <a href="#" class="text-gray-400 hover:text-white transition-colors"><i class="fab fa-linkedin"></i></a>
-                        <a href="#" class="text-gray-400 hover:text-white transition-colors"><i class="fab fa-github"></i></a>
-                    </div>
-                    #}
                     </div>
                     
-                <div class="mt-8 pt-6 text-center text-xs"
+                    <!-- Newsletter Anmeldung -->
-                     :class="darkMode ? 'border-t border-gray-800/50 text-gray-500' : 'border-t border-gray-300/50 text-gray-600'">
+                    <div class="flex flex-col">
+                        <h3 class="font-semibold text-lg mb-4"
+                           :class="darkMode ? 'text-white' : 'text-gray-800'">Newsletter</h3>
+                        <p class="text-sm mb-4"
+                           :class="darkMode ? 'text-gray-300' : 'text-gray-600'">
+                            Bleibe auf dem Laufenden mit unseren neuesten Funktionen und Updates.
+                        </p>
+                        <form class="flex flex-col space-y-3">
+                            <input type="email" placeholder="Deine E-Mail Adresse" 
+                                   class="px-4 py-2.5 rounded-xl transition-all duration-200 focus:outline-none focus:ring-2 focus:ring-purple-500" 
+                                   :class="darkMode ? 'bg-gray-800/80 text-white border border-gray-700 focus:bg-gray-800' : 'bg-white/80 text-gray-800 border border-gray-300 focus:bg-white'" />
+                            <button type="submit" 
+                                    class="px-4 py-2.5 rounded-xl font-medium transition-all duration-300 bg-gradient-to-r from-purple-600 to-indigo-600 text-white shadow-md hover:shadow-lg hover:-translate-y-0.5">
+                                Abonnieren
+                            </button>
+                        </form>
+                    </div>
+                </div>
+
+                <!-- Untere Linie -->
+                <div class="mt-10 pt-6 border-t flex flex-col md:flex-row justify-between items-center"
+                     :class="darkMode ? 'border-gray-800/50 text-gray-400' : 'border-gray-300/50 text-gray-600'">
+                    <div class="text-xs md:text-sm mb-3 md:mb-0">
                         &copy; {{ current_year }} Systades. Alle Rechte vorbehalten.
                     </div>
+                    <div class="text-xs md:text-sm">
+                        Designed with <i class="fas fa-heart text-pink-500"></i> in Deutschland
+                    </div>
+                </div>
             </div>
         </footer>
     </div>

website/templates/mindmap.html

@@ -516,7 +516,7 @@
     left: 0;
     width: 100%;
     height: 100%;
-    background-image: url('/static/network-bg.jpg');
+    background-image: url('/static/network-bg.svg');
     background-size: cover;
     background-position: center;
     opacity: 0.2;
@@ -651,237 +651,101 @@
 </div>
 {% endblock %}
 
-{% block extra_js %}
+{% block scripts %}
-<!-- D3.js für die Mindmap-Visualisierung -->
+<!-- D3.js Library -->
 <script src="https://d3js.org/d3.v7.min.js"></script>
-<!-- Tippy.js für verbesserte Tooltips -->
+
-<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.6/dist/umd/popper.min.js"></script>
+<!-- Mindmap scripts -->
-<script src="https://cdn.jsdelivr.net/npm/tippy.js@6.3.7/dist/tippy.umd.min.js"></script>
-<!-- D3-Erweiterungen für spezifische Effekte -->
 <script src="{{ url_for('static', filename='d3-extensions.js') }}"></script>
-<!-- Mindmap JS -->
 <script src="{{ url_for('static', filename='mindmap.js') }}"></script>
-<script src="{{ url_for('static', filename='network-animation.js') }}"></script>
 
+<!-- Initialization Script -->
 <script>
-  // Dynamische Neuronen-Netz-Animation im Hintergrund
+document.addEventListener('DOMContentLoaded', function() {
-  document.addEventListener('DOMContentLoaded', function() {
+  // Inizialize the mindmap visualization
-    // Animation des neuronalen Netzwerks hinzufügen
-    const neuralBg = document.querySelector('.neural-universe-bg');
-    
-    // Neuronenpunkte erstellen
-    const neuronCount = 100;
-    for (let i = 0; i < neuronCount; i++) {
-      const neuron = document.createElement('div');
-      neuron.className = 'neuron-point';
-      
-      // Zufällige Position
-      const posX = Math.random() * 100;
-      const posY = Math.random() * 100;
-      const size = Math.random() * 3 + 1;
-      const animDuration = Math.random() * 50 + 20;
-      
-      // Styling mit Glasmorphismus
-      neuron.style.cssText = `
-        position: absolute;
-        left: ${posX}%;
-        top: ${posY}%;
-        width: ${size}px;
-        height: ${size}px;
-        background: rgba(255, 255, 255, ${Math.random() * 0.3 + 0.1});
-        border-radius: 50%;
-        filter: blur(${Math.random() * 1}px);
-        box-shadow: 0 0 ${Math.random() * 10 + 5}px rgba(179, 143, 255, 0.5);
-        animation: pulse ${animDuration}s infinite alternate ease-in-out;
-      `;
-      
-      neuralBg.appendChild(neuron);
-    }
-    
-    // Verbindungen zwischen Neuronen erstellen
-    const connectionCount = 40;
-    for (let i = 0; i < connectionCount; i++) {
-      const connection = document.createElement('div');
-      connection.className = 'neuron-connection';
-      
-      // Zufällige Position und Rotation für Verbindungen
-      const posX = Math.random() * 100;
-      const posY = Math.random() * 100;
-      const width = Math.random() * 150 + 50;
-      const height = Math.random() * 1 + 0.5;
-      const rotation = Math.random() * 360;
-      const opacity = Math.random() * 0.2 + 0.05;
-      const animDuration = Math.random() * 20 + 10;
-      
-      connection.style.cssText = `
-        position: absolute;
-        left: ${posX}%;
-        top: ${posY}%;
-        width: ${width}px;
-        height: ${height}px;
-        background: linear-gradient(90deg, transparent, rgba(179, 143, 255, ${opacity}), transparent);
-        transform: rotate(${rotation}deg);
-        animation: flash ${animDuration}s infinite alternate ease-in-out;
-        opacity: ${opacity};
-      `;
-      
-      neuralBg.appendChild(connection);
-    }
-    
-    // Initialisiere die Mindmap-Visualisierung
   const mindmapContainer = document.getElementById('mindmap-container');
-    const containerWidth = mindmapContainer.clientWidth;
-    const containerHeight = mindmapContainer.clientHeight;
   
-    const mindmap = new MindMapVisualization('#mindmap-container', {
+  // Options for the visualization
-      width: containerWidth,
+  const options = {
-      height: containerHeight,
+    width: mindmapContainer.clientWidth,
+    height: mindmapContainer.clientHeight,
     nodeRadius: 22,
     selectedNodeRadius: 28,
-      linkDistance: 160,
+    linkDistance: 150,
-      chargeStrength: -1200,
+    chargeStrength: -1000,
-      centerForce: 0.1,
+    centerForce: 0.15,
     tooltipEnabled: true,
     onNodeClick: function(node) {
       console.log('Node clicked:', node);
-        // Hier können spezifische Aktionen für Knotenklicks definiert werden
+      // Handle node click - could be expanded to display node content
+      // or fetch more information from the server
     }
-    });
+  };
   
-    // Event-Listener für Steuerungsbuttons
+  // Create and initialize the visualization
+  window.mindmap = new MindMapVisualization('#mindmap-container', options);
+  
+  // Set up UI event handlers
   document.getElementById('zoom-in-btn').addEventListener('click', function() {
-      // Zoom-In-Funktionalität
+    if (window.mindmap) {
-      const svg = d3.select('#mindmap-container svg');
+      const transform = d3.zoomTransform(window.mindmap.svg.node());
-      const currentZoom = d3.zoomTransform(svg.node());
+      window.mindmap.svg.call(
-      const newScale = currentZoom.k * 1.3;
-      svg.transition().duration(300).call(
         d3.zoom().transform,
-        d3.zoomIdentity.translate(currentZoom.x, currentZoom.y).scale(newScale)
+        d3.zoomIdentity.scale(transform.k * 1.3)
       );
+    }
   });
   
   document.getElementById('zoom-out-btn').addEventListener('click', function() {
-      // Zoom-Out-Funktionalität
+    if (window.mindmap) {
-      const svg = d3.select('#mindmap-container svg');
+      const transform = d3.zoomTransform(window.mindmap.svg.node());
-      const currentZoom = d3.zoomTransform(svg.node());
+      window.mindmap.svg.call(
-      const newScale = currentZoom.k / 1.3;
-      svg.transition().duration(300).call(
         d3.zoom().transform,
-        d3.zoomIdentity.translate(currentZoom.x, currentZoom.y).scale(newScale)
+        d3.zoomIdentity.scale(transform.k / 1.3)
       );
+    }
   });
   
   document.getElementById('center-btn').addEventListener('click', function() {
-      // Zentrieren-Funktionalität
+    if (window.mindmap) {
-      const svg = d3.select('#mindmap-container svg');
+      window.mindmap.svg.call(
-      svg.transition().duration(500).call(
         d3.zoom().transform,
-        d3.zoomIdentity.scale(1)
+        d3.zoomIdentity
       );
+    }
   });
   
-    // Add Thought Button
   document.getElementById('add-thought-btn').addEventListener('click', function() {
-      // Implementierung für das Hinzufügen eines neuen Gedankens
+    alert('Diese Funktion steht demnächst zur Verfügung.');
-      if (mindmap.selectedNode) {
-        const newNodeName = prompt('Gedanke eingeben:');
-        if (newNodeName && newNodeName.trim() !== '') {
-          const newNodeId = 'node_' + Date.now();
-          const newNode = {
-            id: newNodeId,
-            name: newNodeName,
-            description: 'Neuer Gedanke',
-            thought_count: 0
-          };
-          
-          // Node zur Mindmap hinzufügen
-          mindmap.nodes.push(newNode);
-          
-          // Link zum ausgewählten Knoten erstellen
-          mindmap.links.push({
-            source: mindmap.selectedNode.id,
-            target: newNodeId
   });
   
-          // Mindmap aktualisieren
-          mindmap.updateVisualization();
-        }
-      } else {
-        alert('Bitte zuerst einen Knoten auswählen, um einen Gedanken hinzuzufügen.');
-      }
-    });
-    
-    // Connect Button
   document.getElementById('connect-btn').addEventListener('click', function() {
-      // Implementierung für das Verbinden von Knoten
+    alert('Diese Funktion steht demnächst zur Verfügung.');
-      if (mindmap.selectedNode && mindmap.mouseoverNode && mindmap.selectedNode !== mindmap.mouseoverNode) {
+  });
-        // Prüfen, ob Verbindung bereits existiert
+  
-        const existingLink = mindmap.links.find(link => 
+  // Handle window resize
-          (link.source.id === mindmap.selectedNode.id && link.target.id === mindmap.mouseoverNode.id) || 
+  let resizeTimeout;
-          (link.source.id === mindmap.mouseoverNode.id && link.target.id === mindmap.selectedNode.id)
+  window.addEventListener('resize', function() {
+    clearTimeout(resizeTimeout);
+    resizeTimeout = setTimeout(function() {
+      if (window.mindmap) {
+        window.mindmap.width = mindmapContainer.clientWidth;
+        window.mindmap.height = mindmapContainer.clientHeight;
+        window.mindmap.svg
+          .attr('width', window.mindmap.width)
+          .attr('height', window.mindmap.height)
+          .attr('viewBox', `0 0 ${window.mindmap.width} ${window.mindmap.height}`);
+          
+        // Update the center force
+        window.mindmap.simulation.force('center', 
+          d3.forceCenter(window.mindmap.width / 2, window.mindmap.height / 2)
         );
         
-        if (!existingLink) {
+        // Restart the simulation
-          // Link erstellen
+        window.mindmap.simulation.alpha(0.3).restart();
-          mindmap.links.push({
+      }
-            source: mindmap.selectedNode.id,
+    }, 250);
-            target: mindmap.mouseoverNode.id
   });
-          
+});
-          // Mindmap aktualisieren
-          mindmap.updateVisualization();
-        } else {
-          alert('Diese Verbindung existiert bereits.');
-        }
-      } else {
-        alert('Bitte wähle zwei verschiedene Knoten aus, um sie zu verbinden.');
-      }
-    });
-
-    // Responsive Anpassung bei Fenstergrößenänderung
-    window.addEventListener('resize', function() {
-      const newWidth = mindmapContainer.clientWidth;
-      const newHeight = mindmapContainer.clientHeight;
-      
-      if (mindmap.svg) {
-        mindmap.svg
-          .attr('width', newWidth)
-          .attr('height', newHeight);
-        
-        mindmap.width = newWidth;
-        mindmap.height = newHeight;
-        
-        // Force-Simulation aktualisieren
-        if (mindmap.simulation) {
-          mindmap.simulation
-            .force('center', d3.forceCenter(newWidth / 2, newHeight / 2))
-            .restart();
-        }
-      }
-    });
-
-    // Aktualisiere das Aussehen von Bookmarks, sobald die Mindmap vollständig geladen ist
-    setTimeout(() => {
-      if (mindmap && typeof mindmap.updateAllBookmarkedNodes === 'function') {
-        mindmap.updateAllBookmarkedNodes();
-      }
-    }, 1000);
-  });
-  
-  // Animationen für die Hintergrundeffekte
-  document.head.insertAdjacentHTML('beforeend', `
-    <style>
-      @keyframes pulse {
-        0% { transform: scale(1); opacity: 0.5; }
-        100% { transform: scale(1.5); opacity: 0.2; }
-      }
-      
-      @keyframes flash {
-        0% { opacity: 0.02; }
-        50% { opacity: 0.2; }
-        100% { opacity: 0.08; }
-      }
-    </style>
-  `);
 </script>
 {% endblock %}