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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, #490303 0%, #000000 50%, #031a3a 100%);
            color: #e0e0e0;
            min-height: 100vh;
            overflow-x: hidden;
        }

        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 20px;
        }

        /* Header */
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            padding: 20px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #0a1a5e 0%, #764ba2 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
        }

        .logo h1 {
            font-size: 28px;
            font-weight: 700;
            background: linear-gradient(135deg, #1111cd 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .welcome-text {
            font-size: 14px;
            color: #888;
            margin-top: 2px;
        }

        .header-actions {
            display: flex;
            gap: 12px;
            align-items: center;
            margin-top: 30px;
            
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #000000 0%, #764ba2 100%);
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .btn-success {
            background: linear-gradient(135deg, #2a5c14 0%, #040404 100%);
            color: white;
        }

        .btn-success:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(86, 171, 47, 0.3);
        }

        .icon-btn {
            background: rgba(255, 255, 255, 0.1);
            color: #e0e0e0;
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 10px;
            border-radius: 8px;
            backdrop-filter: blur(10px);
        }

        .icon-btn:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* Toggle Switch */
        .toggle-container {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 1000;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .toggle-label {
            color: #e0e0e0;
            font-size: 12px;
            font-weight: 500;
        }

        .toggle-switch {
            position: relative;
            display: inline-block;
            width: 60px;
            height: 34px;
        }

        .toggle-switch input {
            opacity: 0;
            width: 0;
            height: 0;
        }

        .slider {
            position: absolute;
            cursor: pointer;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(255, 255, 255, 0.2);
            transition: .4s;
            border-radius: 34px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 4px 8px;
        }

        .slider:before {
            position: absolute;
            content: "";
            height: 26px;
            width: 26px;
            left: 4px;
            bottom: 3px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            transition: .4s;
            border-radius: 50%;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .slider i {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            z-index: 1;
        }

        input:checked + .slider {
            background: rgba(102, 126, 234, 0.3);
        }

        input:checked + .slider:before {
            transform: translateX(26px);
        }

        /* Controls */
        .controls {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 30px;
            gap: 20px;
        }

        .search-box {
            flex: 1;
            max-width: 400px;
            position: relative;
        }

        .search-box input {
            width: 100%;
            padding: 12px 16px 12px 45px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            color: #e0e0e0;
            font-size: 14px;
            backdrop-filter: blur(10px);
        }

        .search-box input::placeholder {
            color: #888;
        }

        .search-box i {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: #888;
        }

        .filter-controls {
            display: flex;
            gap: 12px;
        }

        .dropdown {
            position: relative;
        }

        .dropdown-btn {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #e0e0e0;
            padding: 10px 16px;
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            backdrop-filter: blur(10px);
            transition: all 0.3s ease;
            min-width: 140px;
            justify-content: space-between;
        }

        .dropdown-btn:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .dropdown-content {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(30, 30, 50, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            backdrop-filter: blur(20px);
            z-index: 1000;
            margin-top: 4px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
        }

        .dropdown.active .dropdown-content {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-item {
            padding: 12px 16px;
            cursor: pointer;
            transition: background 0.2s ease;
            border-radius: 6px;
            margin: 4px;
        }

        .dropdown-item:hover {
            background: rgba(102, 126, 234, 0.2);
        }

        .dropdown-item.active {
            background: rgba(102, 126, 234, 0.3);
            color: #667eea;
        }

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 16px;
            padding: 24px;
            backdrop-filter: blur(20px);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .stat-number.total { color: #667eea; }
        .stat-number.pending { color: #f39c12; }
        .stat-number.completed { color: #27ae60; }

        .stat-label {
            font-size: 14px;
            color: #888;
            font-weight: 500;
        }

        /* Lists Container */
        .lists-container {
            display: grid;
            gap: 20px;
        }

        .list-item {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 16px;
            backdrop-filter: blur(20px);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .list-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .list-header {
            padding: 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .list-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .list-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 16px;
        }

        .list-details h3 {
            font-size: 18px;
            margin-bottom: 4px;
        }

        .list-stats {
            display: flex;
            gap: 16px;
            font-size: 12px;
            color: #888;
        }

        .list-actions {
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .expand-btn {
            background: none;
            border: none;
            color: #888;
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
            transition: all 0.3s ease;
            transform: rotate(0deg);
        }

        .expand-btn.expanded {
            transform: rotate(180deg);
        }

        .expand-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #e0e0e0;
        }

        .list-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .list-content.expanded {
            max-height: 1000px;
        }

        .add-task-btn {
            margin: 16px 20px;
            padding: 12px 16px;
            background: rgba(102, 126, 234, 0.2);
            border: 1px dashed rgba(102, 126, 234, 0.5);
            border-radius: 8px;
            color: #667eea;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.3s ease;
        }

        .add-task-btn:hover {
            background: rgba(102, 126, 234, 0.3);
            border-color: rgba(102, 126, 234, 0.7);
        }

        .tasks-list {
            padding: 0 20px 20px;
        }

        .task-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 16px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all 0.3s ease;
        }

        .task-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(5px);
        }

        .task-checkbox {
            width: 18px;
            height: 18px;
            border: 2px solid #667eea;
            border-radius: 4px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .task-checkbox.completed {
            background: #667eea;
            color: white;
        }

        .task-content {
            flex: 1;
        }

        .task-title {
            font-size: 14px;
            margin-bottom: 2px;
            transition: all 0.3s ease;
        }

        .task-item.completed .task-title {
            text-decoration: line-through;
            opacity: 0.6;
        }

        .task-meta {
            font-size: 11px;
            color: #888;
            display: flex;
            gap: 12px;
        }

        .task-actions {
            display: flex;
            gap: 4px;
        }

        .task-btn {
            background: none;
            border: none;
            color: #888;
            cursor: pointer;
            padding: 6px;
            border-radius: 4px;
            transition: all 0.3s ease;
            font-size: 12px;
        }

        .task-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #e0e0e0;
        }

        .task-btn.edit:hover { color: #f39c12; }
        .task-btn.delete:hover { color: #e74c3c; }

        /* Priority indicators */
        .priority-high { border-left: 3px solid #e74c3c; }
        .priority-medium { border-left: 3px solid #f39c12; }
        .priority-low { border-left: 3px solid #27ae60; }

        /* Empty State */
        .empty-state {
            text-align: center;
            padding: 80px 20px;
            color: #888;
        }

        .empty-icon {
            font-size: 64px;
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .empty-message {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .empty-submessage {
            font-size: 14px;
            opacity: 0.7;
        }

        /* Modal */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.8);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .modal.active {
            opacity: 1;
            visibility: visible;
        }

        .modal-content {
            background: rgba(30, 30, 50, 0.95);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 16px;
            padding: 30px;
            width: 90%;
            max-width: 500px;
            backdrop-filter: blur(20px);
            transform: scale(0.9);
            transition: all 0.3s ease;
        }

        .modal.active .modal-content {
            transform: scale(1);
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .modal-title {
            font-size: 20px;
            font-weight: 600;
        }

        .close-btn {
            background: none;
            border: none;
            color: #888;
            font-size: 24px;
            cursor: pointer;
            padding: 4px;
            border-radius: 4px;
            transition: all 0.3s ease;
        }

        .close-btn:hover {
            color: #e0e0e0;
            background: rgba(255, 255, 255, 0.1);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #e0e0e0;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            color: #e0e0e0;
            font-size: 14px;
            backdrop-filter: blur(10px);
        }

        .form-control:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 80px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .modal-actions {
            display: flex;
            gap: 12px;
            justify-content: flex-end;
            margin-top: 30px;
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            color: #e0e0e0;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        /* Light theme styles */
        body.light-theme {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 50%, #667eea 100%);
            color: #333;
        }

        body.light-theme .header h1 {
            color: #333;
            -webkit-text-fill-color: #333;
        }

        body.light-theme .welcome-text {
            color: #666;
        }

        body.light-theme .stat-card,
        body.light-theme .list-item,
        body.light-theme .search-box input,
        body.light-theme .dropdown-btn,
        body.light-theme .form-control {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(0, 0, 0, 0.1);
            color: #333;
        }

        body.light-theme .dropdown-content,
        body.light-theme .modal-content {
            background: rgba(255, 255, 255, 0.95);
            border: 1px solid rgba(0, 0, 0, 0.1);
            color: #333;
        }

        body.light-theme .task-item {
            background: rgba(255, 255, 255, 0.4);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        /* Animation classes */
        .fade-in {
            animation: fadeIn 0.5s ease-in;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .header {
                flex-direction: column;
                gap: 16px;
            }

            .controls {
                flex-direction: column;
                gap: 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            }

            .form-row {
                grid-template-columns: 1fr;
            }
        }