:root {
            --primary-blue: #0056b3;
            --dark-grey: #333;
            --light-grey: #f4f4f4;
            --white: #ffffff;
            --transition: all 0.3s ease;
        }

       

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

        .header {
            text-align: center;
            margin-bottom: 50px;
        }

        .header h1 {
            color: var(--dark-grey);
            font-size: 2.5rem;
            margin-bottom: 10px;
        }

        /* Product Grid */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
            gap: 25px;
        }

        /* Product Card Design */
        .product-card {
            background: var(--white);
            border-radius: 20px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            padding: 40px;
            position: relative;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            transition: var(--transition);
        }

        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .card-content {
            z-index: 2;
        }

        .brand-logo {
            font-size: 1.5rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 5px;
            color: var(--dark-grey);
        }

        .product-title {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: var(--dark-grey);
            line-height: 1.2;
        }

        .price-tag {
            font-size: 1.2rem;
            color: #666;
            margin-bottom: 5px;
        }

        .price-value {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--dark-grey);
        }

        .exchange-offer {
            font-size: 0.9rem;
            color: #888;
            margin-top: 10px;
        }

        /* Product Image Placement */
        .product-img {
            width: 100%;
            max-width: 350px;
            margin-top: 20px;
            align-self: center;
            filter: drop-shadow(0 10px 10px rgba(0,0,0,0.1));
        }

        /* Themes (Matching your screenshot) */
        .theme-grey { background-color: #e2e2e2; }
        .theme-beige { background-color: #dfdbd4; }
        .theme-blue { background-color: #4b49ff; color: white; }
        .theme-purple { background-color: #6d4aff; color: white; }

        .theme-blue .brand-logo, .theme-blue .product-title, .theme-blue .price-value,
        .theme-purple .brand-logo, .theme-purple .product-title, .theme-purple .price-value {
            color: white;
        }

        @media (max-width: 600px) {
            .product-grid { grid-template-columns: 1fr; }
            .product-card { padding: 25px; }
        }