/* Dark Mode (Default) */
        :root {
            --bg-primary: #0f172a;
            --bg-secondary: #1e293b;
            --bg-card: #1e293b;
            --bg-hover: #334155;
            --text-primary: #f8fafc;
            --text-secondary: #cbd5e1;
            --text-muted: #94a3b8;
            --accent: #60a5fa;
            --accent-hover: #3b82f6;
            --success: #34d399;
            --warning: #fbbf24;
            --danger: #f87171;
            --border: #475569;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
            --link-color: #93c5fd;
            --link-hover: #bfdbfe;
        }

        /* Light Mode */
        [data-theme="light"] {
            --bg-primary: #f8fafc;
            --bg-secondary: #ffffff;
            --bg-card: #ffffff;
            --bg-hover: #f1f5f9;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #64748b;
            --accent: #3b82f6;
            --accent-hover: #2563eb;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --border: #e2e8f0;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --link-color: #2563eb;
            --link-hover: #1d4ed8;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            min-height: 100vh;
            line-height: 1.6;
        }

        .sidebar {
            position: fixed;
            left: 0;
            top: 0;
            width: 260px;
            height: 100vh;
            background: var(--bg-secondary);
            border-right: 1px solid var(--border);
            padding: 1.5rem 0;
            display: flex;
            flex-direction: column;
            z-index: 100;
            overflow: hidden;
        }

        .logo {
            padding: 0 1.5rem 1.5rem;
            border-bottom: 1px solid var(--border);
            margin-bottom: 1rem;
            flex-shrink: 0;
        }

        .logo h1 {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .logo span {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.1em;
        }

        .nav-section {
            padding: 0.5rem 1rem;
            flex: 1;
            overflow-y: auto;
            overflow-x: hidden;
        }

        .nav-section::-webkit-scrollbar {
            width: 6px;
        }

        .nav-section::-webkit-scrollbar-track {
            background: var(--bg-secondary);
        }

        .nav-section::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 3px;
        }

        .nav-section::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        .nav-section-title {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--text-muted);
            padding: 0.5rem;
            margin-top: 0.5rem;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.75rem 1rem;
            color: var(--text-secondary);
            text-decoration: none;
            border-radius: 0.5rem;
            transition: all 0.2s;
            font-weight: 500;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
            transform: translateX(2px);
        }

        .nav-link.active {
            background: var(--accent);
            color: white;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(96, 165, 250, 0.3);
        }

        .nav-link svg {
            width: 20px;
            height: 20px;
            opacity: 0.9;
            flex-shrink: 0;
        }

        /* Allgemeine Link-Styles für bessere Lesbarkeit */
        a {
            color: var(--link-color);
            text-decoration: none;
            transition: color 0.2s;
        }

        a:hover {
            color: var(--link-hover);
            text-decoration: underline;
        }

        .content a:not(.btn):not(.nav-link) {
            color: var(--link-color);
            font-weight: 500;
        }

        .content a:not(.btn):not(.nav-link):hover {
            color: var(--link-hover);
        }

        .sidebar-footer {
            margin-top: auto;
            padding: 1rem 1.5rem;
            border-top: 1px solid var(--border);
            flex-shrink: 0;
        }

        .main {
            margin-left: 260px;
            min-height: 100vh;
        }

        .header {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border);
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 50;
        }

        .header-title {
            font-size: 1.25rem;
            font-weight: 600;
        }

        .content {
            padding: 2rem;
            max-width: 1400px;
        }

        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 600;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-bottom: 1.5rem;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 0.75rem;
            padding: 1.25rem;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0.5rem;
            font-weight: 500;
        }

        .stat-value {
            font-size: 1.6rem;
            font-weight: 700;
            font-family: 'JetBrains Mono', monospace;
            letter-spacing: -0.02em;
        }

        .stat-value.positive { color: var(--success); }
        .stat-value.negative { color: var(--danger); }
        .stat-value.neutral { color: var(--text-primary); }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.625rem 1.25rem;
            border-radius: 0.5rem;
            font-weight: 500;
            text-decoration: none;
            cursor: pointer;
            border: none;
            font-size: 0.9rem;
            transition: all 0.2s;
            font-family: inherit;
        }

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

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

        .btn-secondary {
            background: var(--bg-hover);
            color: var(--text-primary);
        }

        .btn-secondary:hover {
            background: var(--border);
        }

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

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

        .btn-sm {
            padding: 0.375rem 0.75rem;
            font-size: 0.8rem;
        }

        .table-container {
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th, td {
            padding: 1rem 1.25rem;
            text-align: left;
            border-bottom: 1px solid var(--border);
        }

        th {
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            background: rgba(71, 85, 105, 0.3);
        }

        td {
            font-size: 0.95rem;
            line-height: 1.5;
        }

        tr:hover {
            background: var(--bg-hover);
        }

        tbody tr {
            transition: background-color 0.15s;
        }

        .mono {
            font-family: 'JetBrains Mono', monospace;
        }

        .form-group {
            margin-bottom: 1.25rem;
        }

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--text-secondary);
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 0.85rem 1rem;
            background: var(--bg-primary);
            border: 2px solid var(--border);
            border-radius: 0.5rem;
            color: var(--text-primary);
            font-size: 1rem;
            font-family: inherit;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
        }

        .form-input::placeholder {
            color: var(--text-muted);
        }

        .form-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
        }

        .badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .badge-success {
            background: rgba(16, 185, 129, 0.15);
            color: var(--success);
        }

        .badge-warning {
            background: rgba(245, 158, 11, 0.15);
            color: var(--warning);
        }

        .badge-danger {
            background: rgba(239, 68, 68, 0.15);
            color: var(--danger);
        }

        .alert {
            padding: 1rem 1.25rem;
            border-radius: 0.5rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .alert-success {
            background: rgba(16, 185, 129, 0.15);
            border: 1px solid var(--success);
            color: var(--success);
        }

        .alert-error {
            background: rgba(239, 68, 68, 0.15);
            border: 1px solid var(--danger);
            color: var(--danger);
        }

        .alert-info {
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid var(--accent);
            color: var(--accent);
        }

        .alert-warning {
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid var(--warning);
            color: var(--warning);
        }

        .empty-state {
            text-align: center;
            padding: 3rem;
            color: var(--text-muted);
        }

        .empty-state svg {
            width: 64px;
            height: 64px;
            margin-bottom: 1rem;
            opacity: 0.5;
        }

        .actions {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.3s;
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .main {
                margin-left: 0;
            }

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

            .form-row {
                grid-template-columns: 1fr;
            }
        }
        .settings-icon:hover { background: var(--bg-tertiary); color: var(--accent); }
    
        /* ==================== MOBILE RESPONSIVE ==================== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0; left: 0; right: 0;
            height: 60px;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border);
            padding: 0 1rem;
            align-items: center;
            justify-content: space-between;
            z-index: 90;
        }
        .hamburger {
            display: flex; flex-direction: column; gap: 5px;
            padding: 0.5rem; cursor: pointer; background: none; border: none;
        }
        .hamburger span {
            width: 24px; height: 2px; background: var(--text-primary);
            border-radius: 2px; transition: all 0.3s;
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
        .mobile-title {
            font-size: 1.1rem; font-weight: 600;
            background: linear-gradient(135deg, var(--accent), #8b5cf6);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .sidebar-overlay {
            display: none; position: fixed; inset: 0;
            background: rgba(0,0,0,0.5); z-index: 95;
            opacity: 0; transition: opacity 0.3s;
        }
        .sidebar-overlay.active { opacity: 1; display: block; }
        
        @media (max-width: 768px) {
            .mobile-header { display: flex; }
            .sidebar { transform: translateX(-100%); width: 280px; }
            .sidebar.open { transform: translateX(0); }
            .main { margin-left: 0; padding-top: 60px; }
            .header { padding: 1rem; flex-direction: column; align-items: flex-start; }
            .header-title { font-size: 1.1rem; }
            .header-actions { width: 100%; }
            .header-actions .btn { flex: 1; justify-content: center; }
            .content { padding: 1rem; }
            .card { padding: 1rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
            .stat-card { padding: 1rem; }
            .stat-value { font-size: 1.25rem; }
            .form-row { grid-template-columns: 1fr; }
            .table-container { overflow-x: auto; -webkit-overflow-scrolling: touch; }
        }
        @media (max-width: 480px) {
            .stats-grid { grid-template-columns: 1fr; }
            .header-actions { flex-direction: column; }
            .header-actions .btn { width: 100%; }
        }
    
        /* Header Right */
        .header-right {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        
        .header-bell {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            color: var(--text-secondary);
            transition: all 0.2s;
            text-decoration: none !important;
        }
        
        .header-bell:hover {
            background: var(--bg-hover);
            color: var(--accent);
        }
        
        .header-badge {
            position: absolute;
            top: 2px;
            right: 2px;
            min-width: 18px;
            height: 18px;
            padding: 0 5px;
            background: #ef4444;
            color: white;
            font-size: 11px;
            font-weight: 700;
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* Blur-Toggle: Zahlen für Screensharing ausblenden */
        .blur-toggle {
            background: none;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }
        .blur-toggle .icon-off { display: none; }
        body.nums-blurred .blur-toggle { background: var(--bg-hover); color: var(--accent); }
        body.nums-blurred .blur-toggle .icon-on { display: none; }
        body.nums-blurred .blur-toggle .icon-off { display: inline-flex; }

        .blurnum {
            filter: blur(0.4em);
            transition: filter 0.15s ease;
            user-select: none;
            border-radius: 3px;
        }
        body.nums-blurred .blurnum { background: var(--bg-hover); }
        /* Nur weichgezeichnet, wenn aktiv – sonst normaler Text */
        body:not(.nums-blurred) .blurnum { filter: none; user-select: auto; }