/* CSS Variables for easy theme switching */
        :root {
            --primary-color: #4a6fa5;
            --secondary-color: #6b8cbc;
            --background-color: #f8f9fa;
            --card-color: #ffffff;
            --text-color: #333333;
            --border-color: #e0e0e0;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --hover-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s ease;
        }

        /* Dark mode variables */
        .dark-mode {
            --primary-color: #6b8cbc;
            --secondary-color: #4a6fa5;
            --background-color: #1a1a2e;
            --card-color: #16213e;
            --text-color: #e6e6e6;
            --border-color: #2d3748;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
            --hover-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
        }

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

        body {
            background-color: var(--background-color);
            color: var(--text-color);
            transition: var(--transition);
            line-height: 1.6;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header styles */
        header {
            background-color: var(--primary-color);
            color: white;
            padding: 20px 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .header-info {
            flex: 1;
        }

        .header-controls {
            display: flex;
            gap: 15px;
            align-items: center;
        }

        select, button {
            padding: 8px 12px;
            border: none;
            border-radius: 4px;
            background-color: var(--card-color);
            color: var(--text-color);
            cursor: pointer;
            transition: var(--transition);
        }

        button:hover {
            background-color: var(--secondary-color);
            color: white;
        }

        /* Main content */
        main {
            padding: 30px 0;
        }

        h2 {
            margin-bottom: 20px;
            color: var(--primary-color);
        }

        /* Product section */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 40px;
        }

        .product-card {
            background-color: var(--card-color);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--hover-shadow);
        }

       .product-image {
       width: 100%;
       height: 200px;             
       display: flex;
       align-items: center;
       justify-content: center;
       overflow: hidden;           
       border-radius: 8px 8px 0 0; 
       background-color: #f0f0f0;  
}

    .product-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;        
}

        .product-info {
            padding: 15px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .product-name {
            font-weight: bold;
            margin-bottom: 8px;
        }

        .product-description {
            font-size: 14px;
            color: var(--text-color);
            opacity: 0.8;
            margin-bottom: 10px;
            flex-grow: 1;
        }

        .product-price {
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 15px;
            font-size: 18px;
        }

        .add-to-cart {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 10px;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: bold;
        }

        .add-to-cart:hover {
            background-color: var(--secondary-color);
        }

        /* Cart section */
        .cart-container {
            background-color: var(--card-color);
            border-radius: 8px;
            padding: 20px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }

        .cart-table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 20px;
        }

        .cart-table th, .cart-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        .cart-table th {
            background-color: var(--primary-color);
            color: white;
        }

        .quantity-input {
            width: 60px;
            padding: 5px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: var(--background-color);
            color: var(--text-color);
        }

        .remove-btn {
            background-color: #e74c3c;
            color: white;
            border: none;
            padding: 5px 10px;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
        }

        .remove-btn:hover {
            background-color: #c0392b;
        }

        .cart-summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 20px;
        }

        .grand-total {
            font-size: 20px;
            font-weight: bold;
            color: var(--primary-color);
        }

        .clear-cart {
            background-color: #e74c3c;
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 4px;
            cursor: pointer;
            transition: var(--transition);
        }

        .clear-cart:hover {
            background-color: #c0392b;
        }

        /* Footer */
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 20px 0;
            text-align: center;
            margin-top: 40px;
        }

        /* Responsive styles */
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 15px;
            }
            
            .header-controls {
                width: 100%;
                justify-content: space-between;
            }
            
            .products-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
            
            .cart-table {
                display: block;
                overflow-x: auto;
            }
            
            .cart-summary {
                flex-direction: column;
                gap: 15px;
                align-items: flex-start;
            }
        }

        @media (max-width: 480px) {
            .products-grid {
                grid-template-columns: 1fr;
            }
            
            .cart-table th, .cart-table td {
                padding: 8px 10px;
            }
        }

        /* Animation for cart updates */
        @keyframes cartUpdate {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        .cart-updated {
            animation: cartUpdate 0.5s ease;
        }