.filter-section {
            background: #f8f9fa;
            border-right: 1px solid #dee2e6;
            height: 100vh;
            overflow-y: auto;
        }
        
        .filter-item {
            border-bottom: 1px solid #dee2e6;
        }
        
        .filter-header {
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: #333;
            padding: 15px 20px;
            text-decoration: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        
        .filter-header:hover {
            color: #007bff;
            background-color: #e9ecef;
        }
        
        .filter-options {
            padding: 0 20px 15px 20px;
        }
        
        .filter-option {
            padding: 8px 0;
            cursor: pointer;
            color: #6c757d;
            transition: color 0.2s;
        }
        
        .filter-option:hover {
            color: #007bff;
        }
        
        .filter-option:focus,
        .filter-option:active {
            color: #007bff;
            font-weight: 600;
        }
        
        .product-card {
            border: 1px solid #dee2e6;
            border-radius: 8px;
            overflow: hidden;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            height: 100%;
        }
        
        .product-card:hover {
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            transform: translateY(-5px);
        }
        
        .product-image {
            position: relative;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .best-seller {
            position: absolute;
            top: 10px;
            left: 10px;
            background: #ff6b35;
            color: white;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }
        
        .wishlist-btn {
            position: absolute;
            top: 10px;
            right: 10px;
            background: white;
            border: none;
            border-radius: 50%;
            width: 35px;
            height: 35px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            cursor: pointer;
        }
        
        .watch-display {
            width: 120px;
            height: 120px;
            background: #000;
            border-radius: 20px;
            border: 8px solid #333;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 12px;
            text-align: center;
            position: relative;
        }
        
        .rating {
            display: flex;
            align-items: center;
            gap: 5px;
            margin: 10px 0;
        }
        
        .stars {
            color: #ffc107;
        }
        
        .price-section {
            margin: 10px 0;
        }
        
        .current-price {
            font-size: 18px;
            font-weight: 700;
            color: #333;
        }
        
        .original-price {
            color: #6c757d;
            text-decoration: line-through;
            margin-left: 8px;
        }
        
        .discount {
            color: #28a745;
            font-weight: 600;
            margin-left: 8px;
        }
        
        .color-options {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
        }
        
        .color-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }
        
        .products-section {
            padding: 20px;
        }
        
        .collapse-icon {
            transition: transform 0.3s ease;
        }
        
        .filter-header[aria-expanded="true"] .collapse-icon {
            transform: rotate(180deg);
        }
        
        .mobile-filter-icon {
            transition: transform 0.3s ease;
        }
        
        [aria-expanded="true"] .mobile-filter-icon {
            transform: rotate(180deg);
        }