:root {
            --primary-color: #2563eb;
            --secondary-color: #64748b;
            --success-color: #10b981;
            --danger-color: #ef4444;
            --warning-color: #f59e0b;
            --light-bg: #f8fafc;
            --dark-text: #1e293b;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            color: var(--dark-text);
        }

        .main-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem 1rem;
        }

        .header-section {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 2.5rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-lg);
            text-align: center;
        }

        .header-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--dark-text);
            margin-bottom: 0.5rem;
        }

        .header-subtitle {
            font-size: 1.1rem;
            color: var(--secondary-color);
            margin-bottom: 2rem;
        }

        .stats-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 1.5rem;
            text-align: center;
            box-shadow: var(--shadow-md);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .stat-icon {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: var(--secondary-color);
            font-weight: 500;
        }

        .available { color: var(--success-color); }
        .rented { color: var(--danger-color); }
        .total { color: var(--primary-color); }

        .table-container {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 2rem;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .table-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .table-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--dark-text);
        }

        .filter-controls {
            display: flex;
            gap: 1rem;
            align-items: center;
            flex-wrap: wrap;
        }

        .filter-select, .search-input {
            border: 2px solid var(--border-color);
            border-radius: 10px;
            padding: 0.5rem 1rem;
            font-size: 0.9rem;
            transition: border-color 0.3s ease;
        }

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

        .custom-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .custom-table thead th {
            background: linear-gradient(135deg, var(--primary-color), #3b82f6);
            color: white;
            padding: 1.2rem 1rem;
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border: none;
        }

        .custom-table tbody tr {
            transition: all 0.3s ease;
            border-bottom: 1px solid var(--border-color);
        }

        .custom-table tbody tr:hover {
            background: var(--light-bg);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .custom-table tbody tr:last-child {
            border-bottom: none;
        }

        .custom-table td {
            padding: 1.2rem 1rem;
            font-size: 0.95rem;
            vertical-align: middle;
        }

        .car-make {
            font-weight: 600;
            color: var(--dark-text);
        }

        .car-model {
            color: var(--secondary-color);
            font-size: 0.9rem;
        }

        .year-badge {
            background: var(--light-bg);
            color: var(--secondary-color);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        .price-display {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--success-color);
        }

        .status-badge {
            padding: 0.5rem 1rem;
            border-radius: 25px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .status-available {
            background: rgba(16, 185, 129, 0.1);
            color: var(--success-color);
        }

        .status-rented {
            background: rgba(239, 68, 68, 0.1);
            color: var(--danger-color);
        }

        .action-btn {
            padding: 0.6rem 1.2rem;
            border-radius: 8px;
            font-size: 0.85rem;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: none;
        }

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

        .btn-view:hover {
            background: #1d4ed8;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: white;
        }

        .btn-unavailable {
            background: var(--border-color);
            color: var(--secondary-color);
            cursor: not-allowed;
        }

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

        .empty-state i {
            font-size: 3rem;
            margin-bottom: 1rem;
            opacity: 0.5;
        }

        @media (max-width: 768px) {
            .main-container {
                padding: 1rem;
            }

            .header-title {
                font-size: 2rem;
            }

            .table-container {
                padding: 1rem;
                border-radius: 15px;
            }

            .custom-table {
                font-size: 0.85rem;
            }

            .custom-table td, .custom-table th {
                padding: 0.8rem 0.5rem;
            }

            .filter-controls {
                flex-direction: column;
                width: 100%;
            }

            .filter-select, .search-input {
                width: 100%;
            }
        }

        /* Loading animation */
        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.9);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }

        .spinner {
            width: 50px;
            height: 50px;
            border: 5px solid var(--border-color);
            border-top: 5px solid var(--primary-color);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

            .scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: none; /* hidden by default */
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 50px;
    padding: 10px 16px;
    cursor: pointer;
    z-index: 9999;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.scroll-to-top:hover {
    background-color: #0056b3;
}