*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f5f5}#root{min-height:100vh}a{text-decoration:none;color:inherit}button{font-family:inherit}img{display:block;max-width:100%}.header{background:#fff;box-shadow:0 2px 8px #0000001a;position:sticky;top:0;z-index:100}.header-content{max-width:1200px;margin:0 auto;padding:15px 20px;display:flex;align-items:center;justify-content:space-between;gap:20px}.logo{display:flex;align-items:center;gap:8px;font-size:24px;font-weight:700;color:#ff4757;white-space:nowrap}.logo-icon{font-size:28px}.search-bar{flex:1;max-width:500px;display:flex;border:2px solid #ff4757;border-radius:25px;overflow:hidden}.search-bar input{flex:1;padding:10px 20px;border:none;outline:none;font-size:14px}.search-bar button{padding:10px 25px;background:#ff4757;color:#fff;border:none;font-size:14px;cursor:pointer;transition:background .3s ease}.search-bar button:hover{background:#ff6b7a}.nav-links{display:flex;gap:20px}.nav-links a{text-decoration:none;color:#333;font-size:14px;transition:color .3s ease;white-space:nowrap}.nav-links a:hover{color:#ff4757}@media(max-width:768px){.header-content{flex-wrap:wrap}.search-bar{order:3;max-width:100%;width:100%}.nav-links{gap:15px}.logo-text{font-size:20px}}.product-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000001a;transition:transform .3s ease,box-shadow .3s ease;cursor:pointer}.product-card:hover{transform:translateY(-5px);box-shadow:0 4px 16px #00000026}.product-image{position:relative;width:100%;padding-top:100%;overflow:hidden}.product-image img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover}.discount-badge{position:absolute;top:10px;left:10px;background:#ff4757;color:#fff;padding:4px 8px;border-radius:4px;font-size:12px;font-weight:700}.product-info{padding:12px}.product-name{font-size:14px;font-weight:500;color:#333;margin:0 0 8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.product-category{font-size:12px;color:#999;margin:0 0 8px}.product-price{display:flex;align-items:baseline;gap:8px;margin-bottom:8px}.current-price{font-size:18px;font-weight:700;color:#ff4757}.original-price{font-size:12px;color:#999;text-decoration:line-through}.product-meta{display:flex;justify-content:space-between;font-size:12px;color:#666}.rating{color:#ffa502}.sales{color:#999}.buy-button{width:100%;margin-top:12px;padding:10px;background:linear-gradient(135deg,#ff4757,#ff6b7a);color:#fff;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.buy-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #ff475766}.buy-button:active{transform:translateY(0)}.product-list-container{max-width:1200px;margin:0 auto;padding:20px}.section-title{font-size:24px;font-weight:600;color:#333;margin-bottom:20px;padding-left:10px;border-left:4px solid #ff4757}.product-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}@media(max-width:768px){.product-list{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.section-title{font-size:20px}}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:#fff;border-radius:16px;padding:30px;max-width:450px;width:90%;max-height:90vh;overflow-y:auto;position:relative;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.close-button{position:absolute;top:15px;right:15px;background:none;border:none;font-size:28px;color:#999;cursor:pointer;width:30px;height:30px;display:flex;align-items:center;justify-content:center;transition:color .2s ease}.close-button:hover{color:#333}.modal-content h2{margin:0 0 20px;font-size:24px;color:#333;text-align:center}.product-summary{display:flex;gap:15px;padding:15px;background:#f8f9fa;border-radius:8px;margin-bottom:20px}.product-summary img{width:80px;height:80px;object-fit:cover;border-radius:8px}.product-details{flex:1}.product-details h3{margin:0 0 10px;font-size:16px;color:#333;line-height:1.4}.product-details .price{margin:0;font-size:20px;font-weight:700;color:#ff4757}.form-group{margin-bottom:20px}.form-group input{width:100%;padding:12px;border:1px solid #ddd;border-radius:8px;font-size:14px;transition:border-color .2s ease;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#ff4757}.submit-button{width:100%;padding:14px;background:linear-gradient(135deg,#ff4757,#ff6b7a);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.submit-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #ff475766}.qr-code-container{text-align:center}.qr-code-container h2{margin-bottom:15px}.qr-info{padding:15px;background:#f8f9fa;border-radius:8px;margin-bottom:20px}.qr-info .product-name{margin:0 0 10px;font-size:16px;color:#333}.qr-info .amount{margin:0;font-size:18px;color:#666}.qr-info .amount span{font-size:24px;font-weight:700;color:#ff4757}.qr-code{width:200px;height:200px;margin:20px auto;border-radius:8px;box-shadow:0 2px 8px #0000001a}.payment-hint{font-size:14px;color:#999;margin:15px 0}.close-payment-button{width:100%;padding:14px;background:#28a745;color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;transition:background .2s ease}.close-payment-button:hover{background:#218838}.admin-container{max-width:1400px;margin:0 auto;padding:30px 20px}.admin-container h1{font-size:32px;margin-bottom:30px;color:#333}.tabs{display:flex;gap:10px;margin-bottom:30px;border-bottom:2px solid #f0f0f0;padding-bottom:10px}.tab{padding:12px 24px;background:#fff;border:2px solid #e0e0e0;border-radius:8px 8px 0 0;font-size:16px;font-weight:500;cursor:pointer;transition:all .3s ease}.tab:hover{border-color:#ff4757;color:#ff4757}.tab.active{background:#ff4757;border-color:#ff4757;color:#fff}.products-management{display:grid;grid-template-columns:400px 1fr;gap:30px}@media(max-width:1024px){.products-management{grid-template-columns:1fr}}.product-form{background:#fff;padding:25px;border-radius:12px;box-shadow:0 2px 8px #0000001a;height:fit-content}.product-form h2{font-size:20px;margin-bottom:20px;color:#333}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.form-group{margin-bottom:15px}.form-group label{display:block;margin-bottom:8px;font-size:14px;font-weight:500;color:#333}.form-group input,.form-group textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:6px;font-size:14px;transition:border-color .2s ease;box-sizing:border-box}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#ff4757}.form-buttons{display:flex;gap:10px;margin-top:20px}.btn-primary{flex:1;padding:12px;background:#ff4757;color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:background .2s ease}.btn-primary:hover{background:#ff6b7a}.btn-secondary{flex:1;padding:12px;background:#6c757d;color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:background .2s ease}.btn-secondary:hover{background:#5a6268}.products-list{background:#fff;padding:25px;border-radius:12px;box-shadow:0 2px 8px #0000001a}.products-list h2{font-size:20px;margin-bottom:20px;color:#333}.orders-management{background:#fff;padding:25px;border-radius:12px;box-shadow:0 2px 8px #0000001a}.orders-management h2{font-size:20px;margin-bottom:20px;color:#333}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}thead{background:#f8f9fa}th{padding:12px;text-align:left;font-weight:600;color:#333;border-bottom:2px solid #e0e0e0;white-space:nowrap}td{padding:12px;border-bottom:1px solid #f0f0f0;color:#666}tbody tr:hover{background:#f8f9fa}.btn-small{padding:6px 12px;border:none;border-radius:4px;font-size:12px;cursor:pointer;margin-right:5px;transition:opacity .2s ease}.btn-small:hover{opacity:.8}.btn-edit{background:#28a745;color:#fff}.btn-delete{background:#dc3545;color:#fff}.status-badge{padding:4px 10px;border-radius:12px;font-size:12px;font-weight:500}.status-pending{background:#fff3cd;color:#856404}.status-paid{background:#d1ecf1;color:#0c5460}.status-completed{background:#d4edda;color:#155724}.status-cancelled{background:#f8d7da;color:#721c24}.status-select{padding:6px 10px;border:1px solid #ddd;border-radius:4px;font-size:12px;margin-right:5px;cursor:pointer}.status-select:focus{outline:none;border-color:#ff4757}.loading{text-align:center;padding:40px;font-size:16px;color:#999}.app{min-height:100vh;display:flex;flex-direction:column;background:#f5f5f5}.main-content{flex:1}.banner{background:linear-gradient(135deg,#ff4757,#ff6b7a);color:#fff;text-align:center;padding:60px 20px;margin-bottom:20px}.banner h1{font-size:36px;margin:0 0 10px}.banner p{font-size:18px;margin:0;opacity:.9}.footer{background:#333;color:#999;text-align:center;padding:20px;font-size:14px}@media(max-width:768px){.banner h1{font-size:28px}.banner p{font-size:16px}.banner{padding:40px 20px}}
