* {
            font-family: 'Poppins', sans-serif;
        }
        
        :root {
            --primary-blue: #1e3a8a;
            --secondary-blue: #3b82f6;
            --accent-orange: #f59e0b;
            --warm-orange: #fb923c;
            --soft-white: #f8fafc;
        }

        .bg-primary { background-color: var(--primary-blue); }
        .bg-secondary { background-color: var(--secondary-blue); }
        .bg-accent { background-color: var(--accent-orange); }
        .text-primary { color: var(--primary-blue); }
        .text-accent { color: var(--accent-orange); }
        
        .gradient-bg {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
        }
        
        .book-cover {
            aspect-ratio: 2/3;
            background: linear-gradient(45deg, #667eea 0%, #764ba2 100%);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            text-align: center;
            padding: 1rem;
            font-size: 0.9rem;
        }
        
        .book-cover-1 { background: linear-gradient(45deg, #667eea 0%, #764ba2 100%); }
        .book-cover-2 { background: linear-gradient(45deg, #f093fb 0%, #f5576c 100%); }
        .book-cover-3 { background: linear-gradient(45deg, #4facfe 0%, #00f2fe 100%); }
        .book-cover-4 { background: linear-gradient(45deg, #43e97b 0%, #38f9d7 100%); }
        .book-cover-5 { background: linear-gradient(45deg, #fa709a 0%, #fee140 100%); }
        .book-cover-6 { background: linear-gradient(45deg, #a8edea 0%, #fed6e3 100%); }
        .book-cover-7 { background: linear-gradient(45deg, #ff9a9e 0%, #fecfef 100%); }
        .book-cover-8 { background: linear-gradient(45deg, #a18cd1 0%, #fbc2eb 100%); }
        
        .hover-transform {
            transition: transform 0.3s ease;
        }
        
        .hover-transform:hover {
            transform: translateY(-5px);
        }
        
        .stars {
            color: #fbbf24;
        }
        
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
        }
        
        .modal-content {
            background-color: white;
            margin: 5% auto;
            padding: 20px;
            border-radius: 10px;
            width: 90%;
            max-width: 500px;
        }
        
        .section-spacing {
            margin-bottom: 4rem;
        }
        
        .page-section {
            display: none;
        }
        
        .page-section.active {
            display: block;
        }
        
        #home.active {
            display: block;
        }
        
        .cart-count {
            background: var(--accent-orange);
            color: white;
            border-radius: 50%;
            padding: 0.2rem 0.5rem;
            font-size: 0.8rem;
            margin-left: 0.5rem;
        }

        .book-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 1.5rem;
        }

        .testimonial-card {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }

         {
            .no-print { display: none !important; }
            body { font-size: 12px; }
            .section-spacing { margin-bottom: 2rem; }
        }
        
        /* Responsive adjustments for PDF export */
        @media (max-width: 768px) {
            .book-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
                gap: 1rem;
            }
        }