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<!DOCTYPE html>
<html lang="de">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Notizblock App</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        :root {
            --primary-color: #4f46e5;
            --primary-light: #818cf8;
            --primary-dark: #3730a3;
            --secondary-color: #f3f4f6;
            --text-color: #1f2937;
            --text-light: #6b7280;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --danger-color: #ef4444;
            --border-color: #e5e7eb;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --radius: 8px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            color: var(--text-color);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            margin-bottom: 30px;
            border-bottom: 2px solid var(--border-color);
        }

        .header h1 {
            font-size: 2.5rem;
            background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .header h1 i {
            font-size: 2.2rem;
        }

        .header .anycoder {
            color: var(--text-light);
            font-size: 0.9rem;
            text-decoration: none;
            transition: color 0.3s;
        }

        .header .anycoder:hover {
            color: var(--primary-color);
        }

        .app-container {
            display: grid;
            grid-template-columns: 300px 1fr;
            gap: 30px;
        }

        @media (max-width: 768px) {
            .app-container {
                grid-template-columns: 1fr;
            }
        }

        .sidebar {
            background: white;
            border-radius: var(--radius);
            padding: 25px;
            box-shadow: var(--shadow);
            height: fit-content;
        }

        .note-form {
            margin-bottom: 30px;
        }

        .note-form h2 {
            margin-bottom: 15px;
            font-size: 1.3rem;
            color: var(--primary-color);
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: border-color 0.3s;
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: var(--radius);
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-primary {
            background: var(--primary-color);
            color: white;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
        }

        .btn-danger {
            background: var(--danger-color);
            color: white;
        }

        .btn-danger:hover {
            background: #dc2626;
        }

        .btn-success {
            background: var(--success-color);
            color: white;
        }

        .btn-success:hover {
            background: #059669;
        }

        .btn-full {
            width: 100%;
        }

        .filter-section {
            margin-top: 25px;
        }

        .filter-section h3 {
            margin-bottom: 15px;
            font-size: 1.1rem;
            color: var(--primary-color);
        }

        .filter-options {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .filter-option {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 12px;
            border-radius: var(--radius);
            cursor: pointer;
            transition: background 0.3s;
        }

        .filter-option:hover {
            background: var(--secondary-color);
        }

        .filter-option.active {
            background: var(--primary-light);
            color: white;
        }

        .notes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }

        .note-card {
            background: white;
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
            position: relative;
            overflow: hidden;
        }

        .note-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
        }

        .note-card.pinned::before {
            content: '';
            position: absolute;
            top: 10px;
            right: 10px;
            width: 20px;
            height: 20px;
            background: var(--warning-color);
            border-radius: 50%;
        }

        .note-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 10px;
        }

        .note-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary-color);
            margin-right: 10px;
            word-break: break-word;
        }

        .note-category {
            display: inline-block;
            padding: 4px 8px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--secondary-color);
        }

        .note-content {
            margin-bottom: 15px;
            color: var(--text-color);
            line-height: 1.5;
            word-break: break-word;
        }

        .note-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid var(--border-color);
        }

        .note-date {
            font-size: 0.8rem;
            color: var(--text-light);
        }

        .note-actions {
            display: flex;
            gap: 8px;
        }

        .note-actions button {
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            color: var(--text-light);
            transition: color 0.3s;
            padding: 5px;
        }

        .note-actions button:hover {
            color: var(--primary-color);
        }

        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
        }

        .empty-state i {
            font-size: 4rem;
            margin-bottom: 20px;
            color: var(--border-color);
        }

        .empty-state h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }

        .search-bar {
            margin-bottom: 20px;
            position: relative;
        }

        .search-bar input {
            width: 100%;
            padding: 12px 15px 12px 45px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            font-size: 1rem;
            transition: border-color 0.3s;
        }

        .search-bar input:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        .search-bar i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
        }

        .category-work { background: #e0f2fe; color: #0369a1; }
        .category-personal { background: #f0fdf4; color: #15803d; }
        .category-ideas { background: #fef7cd; color: #a16207; }
        .category-todo { background: #fef2f2; color: #dc2626; }
        .category-other { background: #f3f4f6; color: #4b5563; }

        .stats {
            display: flex;
            justify-content: space-between;
            margin-bottom: 20px;
            padding: 15px;
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        @media (max-width: 480px) {
            .header {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .notes-grid {
                grid-template-columns: 1fr;
            }

            .stats {
                flex-direction: column;
                gap: 15px;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">
            <h1><i class="fas fa-sticky-note"></i> Notizblock App</h1>
            <a href="https://huggingface.co/spaces/akhaliq/anycoder" class="anycoder">Built with anycoder</a>
        </div>

        <div class="app-container">
            <div class="sidebar">
                <div class="note-form">
                    <h2>Neue Notiz</h2>
                    <div class="form-group">
                        <label for="note-title">Titel</label>
                        <input type="text" id="note-title" placeholder="Titel der Notiz">
                    </div>
                    <div class="form-group">
                        <label for="note-content">Inhalt</label>
                        <textarea id="note-content" placeholder="Notizinhalt..."></textarea>
                    </div>
                    <div class="form-group">
                        <label for="note-category">Kategorie</label>
                        <select id="note-category">
                            <option value="personal">Persönlich</option>
                            <option value="work">Arbeit</option>
                            <option value="ideas">Ideen</option>
                            <option value="todo">Aufgaben</option>
                            <option value="other">Sonstiges</option>
                        </select>
                    </div>
                    <div class="form-group">
                        <label>
                            <input type="checkbox" id="note-pinned">
                            Notiz anheften
                        </label>
                    </div>
                    <button class="btn btn-primary btn-full" id="save-note">
                        <i class="fas fa-save"></i> Notiz speichern
                    </button>
                </div>

                <div class="filter-section">
                    <h3>Filter</h3>
                    <div class="filter-options">
                        <div class="filter-option active" data-filter="all">
                            <i class="fas fa-list"></i> Alle Notizen
                        </div>
                        <div class="filter-option" data-filter="personal">
                            <i class="fas fa-user"></i> Persönlich
                        </div>
                        <div class="filter-option" data-filter="work">
                            <i class="fas fa-briefcase"></i> Arbeit
                        </div>
                        <div class="filter-option" data-filter="ideas">
                            <i class="fas fa-lightbulb"></i> Ideen
                        </div>
                        <div class="filter-option" data-filter="todo">
                            <i class="fas fa-tasks"></i> Aufgaben
                        </div>
                        <div class="filter-option" data-filter="pinned">
                            <i class="fas fa-thumbtack"></i> Angeheftet
                        </div>
                    </div>
                </div>
            </div>

            <div class="main-content">
                <div class="search-bar">
                    <i class="fas fa-search"></i>
                    <input type="text" id="search-input" placeholder="Notizen durchsuchen...">
                </div>

                <div class="stats">
                    <div class="stat-item">
                        <div class="stat-number" id="total-notes">0</div>
                        <div class="stat-label">Notizen</div>
                    </div>
                    <div class="stat-item">
                        <div class="stat-number" id="pinned-notes">0</div>
                        <div class="stat-label">Angeheftet</div>
                    </div>
                    <div class="stat-item">
                        <div class="stat-number" id="categories-count">0</div>
                        <div class="stat-label">Kategorien</div>
                    </div>
                </div>

                <div class="notes-grid" id="notes-container">
                    <!-- Notizen werden hier dynamisch eingefügt -->
                </div>
            </div>
        </div>
    </div>

    <script>
        document.addEventListener('DOMContentLoaded', function() {
            // Elemente referenzieren
            const noteTitleInput = document.getElementById('note-title');
            const noteContentInput = document.getElementById('note-content');
            const noteCategorySelect = document.getElementById('note-category');
            const notePinnedCheckbox = document.getElementById('note-pinned');
            const saveNoteButton = document.getElementById('save-note');
            const searchInput = document.getElementById('search-input');
            const notesContainer = document.getElementById('notes-container');
            const filterOptions = document.querySelectorAll('.filter-option');
            const totalNotesElement = document.getElementById('total-notes');
            const pinnedNotesElement = document.getElementById('pinned-notes');
            const categoriesCountElement = document.getElementById('categories-count');

            // Notizen aus dem localStorage laden oder leeres Array erstellen
            let notes = JSON.parse(localStorage.getItem('notes')) || [];
            let currentFilter = 'all';
            let searchQuery = '';

            // Funktion zum Speichern der Notizen im localStorage
            function saveNotesToStorage() {
                localStorage.setItem('notes', JSON.stringify(notes));
            }

            // Funktion zum Hinzufügen einer neuen Notiz
            function addNote() {
                const title = noteTitleInput.value.trim();
                const content = noteContentInput.value.trim();
                const category = noteCategorySelect.value;
                const pinned = notePinnedCheckbox.checked;
                const date = new Date().toLocaleDateString('de-DE');

                if (title === '' || content === '') {
                    alert('Bitte geben Sie einen Titel und Inhalt für die Notiz ein.');
                    return;
                }

                const newNote = {
                    id: Date.now(),
                    title,
                    content,
                    category,
                    pinned,
                    date
                };

                notes.unshift(newNote);
                saveNotesToStorage();
                renderNotes();

                // Formular zurücksetzen
                noteTitleInput.value = '';
                noteContentInput.value = '';
                notePinnedCheckbox.checked = false;
            }

            // Funktion zum Löschen einer Notiz
            function deleteNote(id) {
                if (confirm('Möchten Sie diese Notiz wirklich löschen?')) {
                    notes = notes.filter(note => note.id !== id);
                    saveNotesToStorage();
                    renderNotes();
                }
            }

            // Funktion zum Bearbeiten einer Notiz
            function editNote(id) {
                const note = notes.find(note => note.id === id);
                if (note) {
                    noteTitleInput.value = note.title;
                    noteContentInput.value = note.content;
                    noteCategorySelect.value = note.category;
                    notePinnedCheckbox.checked = note.pinned;

                // Nach dem Bearbeiten die Notiz löschen
                deleteNote(id);
            }

            // Funktion zum Anheften/Abheften einer Notiz
            function togglePin(id) {
                const note = notes.find(note => note.id === id);
                if (note) {
                    note.pinned = !note.pinned;
                    saveNotesToStorage();
                    renderNotes();
                }
            }

            // Funktion zum Rendern der Notizen
            function renderNotes() {
                let filteredNotes = notes;

                // Filter anwenden
                if (currentFilter !== 'all') {
                    if (currentFilter === 'pinned') {
                        filteredNotes = notes.filter(note => note.pinned);
                    } else {
                        filteredNotes = notes.filter(note => note.category === currentFilter);
                }

                // Suche anwenden
                if (searchQuery) {
                    const query = searchQuery.toLowerCase();
                    filteredNotes = filteredNotes.filter(note => 
                        note.title.toLowerCase().includes(query) || 
                        note.content.toLowerCase().includes(query)
                    );
                }

                // Statistik aktualisieren
                updateStats();

                // Notizen in den Container rendern
                if (filteredNotes.length === 0) {
                    notesContainer.innerHTML = `
                        <div class="empty-state">
                            <i class="fas fa-sticky-note"></i>
                            <h3>Keine Notizen gefunden</h3>
                            <p>Erstellen Sie Ihre erste Notiz oder ändern Sie Ihre Filtereinstellungen.</p>
                        </div>
                    `;
                    return;
                }

                // Sortieren: Angeheftete Notizen zuerst, dann nach Datum (neueste zuerst)
                filteredNotes.sort((a, b) => {
                    if (a.pinned && !b.pinned) return -1;
                    if (!a.pinned && b.pinned) return 1;
                    return b.id - a.id;
                });

                notesContainer.innerHTML = filteredNotes.map(note => `
                    <div class="note-card ${note.pinned ? 'pinned' : ''}">
                        <div class="note-header">
                            <div class="note-title">${note.title}</div>
                            <span class="note-category category-${note.category}">
                                ${getCategoryLabel(note.category)}
                            </span>
                        </div>
                        <div class="note-content">${note.content}</div>
                        <div class="note-footer">
                            <div class="note-date">${note.date}</div>
                            <div class="note-actions">
                                <button onclick="togglePin(${note.id})" title="${note.pinned ? 'Abheften' : 'Anheften'}">
                                    <i class="fas fa-thumbtack"></i>
                                </button>
                                <button onclick="editNote(${note.id})" title="Bearbeiten">
                                    <i class="fas fa-edit"></i>
                                </button>
                                <button onclick="deleteNote(${note.id})" title="Löschen">
                                    <i class="fas fa-trash"></i>
                                </button>
                            </div>
                        </div>
                    </div>
                `).join('');
            }

            // Funktion zum Aktualisieren der Statistik
            function updateStats() {
                totalNotesElement.textContent = notes.length;
                pinnedNotesElement.textContent = notes.filter(note => note.pinned).length;
                
                const uniqueCategories = new Set(notes.map(note => note.category));
                categoriesCountElement.textContent = uniqueCategories.size;
            }

            // Kategorielabel basierend auf Wert abrufen
            function getCategoryLabel(category) {
                const labels = {
                    'personal': 'Persönlich',
                    'work': 'Arbeit',
                    'ideas': 'Ideen',
                    'todo': 'Aufgaben',
                    'other': 'Sonstiges'
                };
                return labels[category] || 'Sonstiges';
            }

            // Event-Listener für das Speichern einer Notiz
            saveNoteButton.addEventListener('click', addNote);

            // Event-Listener für die Filteroptionen
            filterOptions.forEach(option => {
                option.addEventListener('click', function() {
                    // Aktive Klasse entfernen
                    filterOptions.forEach(opt => opt.classList.remove('active'));
                    // Aktive Klasse zur ausgewählten Option hinzufügen
                    this.classList.add('active');
                    // Filter aktualisieren
                    currentFilter = this.getAttribute('data-filter');
                    renderNotes();
                });
            });

            // Event-Listener für die Suche
            searchInput.addEventListener('input', function() {
                searchQuery = this.value;
                renderNotes();
            });

            // Funktionen global verfügbar machen
            window.deleteNote = deleteNote;
            window.editNote = editNote;
            window.togglePin = togglePin;

            // Beim Laden der Seite Notizen rendern
            renderNotes();
        });
    </script>
</body>
</html>