:root {--primary-color: #0d6efd;--secondary-color: #6c757d;--success-color: #198754;--danger-color: #dc3545;--warning-color: #ffc107;--info-color: #0dcaf0;}body {font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;background-color: #f8f9fa;}.product-card {transition: transform 0.2s ease, box-shadow 0.2s ease;border: none;border-radius: 12px;overflow: hidden;height: 100%;}.product-card:hover {transform: translateY(-4px);box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;}.product-card .card-img-top {height: 200px;object-fit: cover;background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);}.product-card[data-category="Electronics"] .card-img-top {background: linear-gradient(135deg, #0d6efd 0%, #0b5ed7 100%);}.product-card[data-category="Clothing"] .card-img-top {background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);}.product-card[data-category="Sports"] .card-img-top {background: linear-gradient(135deg, #10b981 0%, #059669 100%);}.product-card[data-category="Home & Garden"] .card-img-top {background: linear-gradient(135deg, #84cc16 0%, #65a30d 100%);}.product-card[data-category="Books"] .card-img-top {background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);}.product-card .card-body {padding: 1rem;}.product-card .card-title {font-size: 1rem;font-weight: 600;margin-bottom: 0.5rem;min-height: 2.5em;overflow: hidden;display: -webkit-box;-webkit-line-clamp: 2;-webkit-box-orient: vertical;}.product-card .price {font-size: 1.25rem;font-weight: 700;color: var(--primary-color);}.product-card .original-price {text-decoration: line-through;color: var(--secondary-color);font-size: 0.9rem;}.rating-stars {color: var(--warning-color);}.rating-stars .empty {color: #dee2e6;}.filter-sidebar {background: white;border-radius: 12px;padding: 1.5rem;position: sticky;top: 80px;}.filter-sidebar .filter-header {border-bottom: 2px solid var(--primary-color);padding-bottom: 0.75rem;margin-bottom: 1rem;}.category-badge {cursor: pointer;transition: all 0.2s ease;}.category-badge:hover, .category-badge.active {background-color: var(--primary-color) !important;color: white !important;}.cart-badge {position: absolute;top: -8px;right: -8px;font-size: 0.7rem;padding: 0.2rem 0.4rem;}.btn-add-cart {background: linear-gradient(135deg, var(--primary-color) 0%, #0b5ed7 100%);border: none;border-radius: 25px;padding: 0.5rem 1.5rem;font-weight: 600;transition: all 0.2s ease;}.btn-add-cart:hover {transform: scale(1.05);box-shadow: 0 4px 15px rgba(13, 110, 253, 0.4);}.btn-wishlist {background: none;border: 2px solid var(--danger-color);color: var(--danger-color);border-radius: 50%;width: 36px;height: 36px;display: flex;align-items: center;justify-content: center;transition: all 0.2s ease;}.btn-wishlist:hover, .btn-wishlist.active {background-color: var(--danger-color);color: white;}.product-detail .product-image {border-radius: 12px;overflow: hidden;box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);}.product-detail .product-image img {width: 100%;height: auto;max-height: 500px;object-fit: cover;}.review-star {cursor: pointer;font-size: 1.5rem;color: #dee2e6;transition: color 0.2s ease;}.review-star.active {color: var(--warning-color);}.checkout-section {background: white;border-radius: 12px;padding: 2rem;box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);}.order-summary {background: #f8f9fa;border-radius: 12px;padding: 1.5rem;}.stat-card {border-radius: 12px;padding: 1.5rem;color: white;}.stat-card.primary { background: linear-gradient(135deg, #0d6efd 0%, #0b5ed7 100%); }.stat-card.success { background: linear-gradient(135deg, #198754 0%, #157347 100%); }.stat-card.warning { background: linear-gradient(135deg, #ffc107 0%, #e0a800 100%); color: #212529; }.stat-card.danger { background: linear-gradient(135deg, #dc3545 0%, #bb5d8c 100%); }@keyframes fadeIn {from { opacity: 0; transform: translateY(10px); }to { opacity: 1; transform: translateY(0); }}.fade-in {animation: fadeIn 0.3s ease-out;}.toast-notification {position: fixed;bottom: 20px;right: 20px;z-index: 9999;animation: slideIn 0.3s ease-out;}@keyframes slideIn {from { transform: translateX(100%); opacity: 0; }to { transform: translateX(0); opacity: 1; }}@media (max-width: 768px) {.product-card .card-img-top {height: 150px;}.filter-sidebar {position: static;margin-bottom: 1rem;}.navbar-brand {font-size: 1.2rem;}}.spinner-overlay {position: fixed;top: 0;left: 0;right: 0;bottom: 0;background: rgba(255, 255, 255, 0.8);display: flex;align-items: center;justify-content: center;z-index: 9999;}.stock-indicator {font-size: 0.85rem;}.stock-indicator.in-stock {color: var(--success-color);}.stock-indicator.low-stock {color: var(--warning-color);}.stock-indicator.out-of-stock {color: var(--danger-color);}