:root {
            --primary-color: #186a8b;
            --primary-light: #4a8ca9;
            --primary-dark: #0d4c66;
            --secondary-color: #3a506b;
            --accent-color: #e67e22;
            --light-color: #f8f9fa;
            --dark-color: #2c3e50;
            --success-color: #27ae60;
            --text-color: #333;
            --light-text: #777;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        .product-container {
            width: 100%;
            max-width: 1200px;
            margin: 40px auto;
            padding: 0 15px;
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }

        .product-images {
            flex: 1;
            min-width: 300px;
        }

        .product-details {
            flex: 1;
            min-width: 300px;
        }

        .main-image {
            margin-bottom: 20px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .main-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        .gallery {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .gallery img {
            width: 80px;
            height: 80px;
            object-fit: cover;
            border-radius: 5px;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
        }

        .gallery img:hover {
            transform: scale(1.05);
            border-color: var(--primary-color);
        }

        .product-title {
            color: var(--primary-color);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 15px;
        }

        .product-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 3px;
            background: var(--primary-color);
        }

        .product-description {
            margin-bottom: 30px;
            line-height: 1.6;
            color: var(--text-color);
        }

        .product-price {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 30px;
        }

        .add-to-cart-form {
            display: flex;
            gap: 15px;
            align-items: center;
            flex-wrap: wrap;
        }

        .quantity-input {
            padding: 12px;
            width: 100px;
            border: 1px solid #ddd;
            border-radius: 4px;
            text-align: center;
            font-size: 1rem;
        }

        .btn {
            display: inline-block;
            padding: 12px 25px;
            background: var(--primary-color);
            color: white;
            text-decoration: none;
            border-radius: 4px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
        }

        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

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

        .btn-success:hover {
            background: #219653;
        }

        .back-link {
            display: inline-block;
            margin-top: 30px;
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
        }

        .back-link:hover {
            text-decoration: underline;
        }

        @media (max-width: 768px) {
            .product-container {
                gap: 30px;
            }
            
            .add-to-cart-form {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .quantity-input {
                width: 100%;
                max-width: 100px;
            }
            
            .btn {
                width: 100%;
            }
        }