:root{--color-primary: #1a1a1a;--color-accent: #4f46e5;--color-accent-hover: #4338ca;--color-success: #10b981;--color-danger: #ef4444;--color-warning: #f59e0b;--color-bg: #f9fafb;--color-surface: #ffffff;--color-border: #e5e7eb;--color-text: #111827;--color-muted: #6b7280;--color-line: #00C300;--radius: 8px;--radius-sm: 4px;--radius-full: 9999px;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 12px rgba(0, 0, 0, .1);--container: 1200px;--header-height: 60px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans TC,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh}#root{display:flex;flex-direction:column;min-height:100vh}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{cursor:pointer;font-family:inherit}input,select,textarea{font-family:inherit;font-size:1rem}.container{max-width:var(--container);margin:0 auto;padding:0 16px}@media(min-width:640px){.container{padding:0 24px}}@media(min-width:1024px){.container{padding:0 32px}}.page{padding:20px 16px;max-width:var(--container);margin:0 auto;width:100%}@media(min-width:640px){.page{padding:24px}}@media(min-width:1024px){.page{padding:32px}}.header{position:sticky;top:0;z-index:100;height:var(--header-height);background:var(--color-primary);color:#fff;display:flex;align-items:center;padding:0 16px;gap:16px;box-shadow:0 2px 8px #0003}.header-logo{font-size:1.125rem;font-weight:700;color:#fff;white-space:nowrap}.header-spacer{flex:1}.header-nav{display:flex;align-items:center;gap:20px}.header-nav a,.header-nav-link{color:#d1d5db;font-size:.9rem;transition:color .15s;white-space:nowrap}.header-nav a:hover,.header-nav-link:hover{color:#fff}.header-nav-admin{color:#fbbf24!important}.header-user{color:#9ca3af;font-size:.85rem;white-space:nowrap;max-width:120px;overflow:hidden;text-overflow:ellipsis}.btn-ghost{background:none;border:1px solid #4b5563;color:#9ca3af;padding:4px 12px;border-radius:var(--radius-sm);font-size:.85rem;transition:border-color .15s,color .15s}.btn-ghost:hover{border-color:#9ca3af;color:#fff}.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:6px;cursor:pointer}.hamburger span{display:block;width:24px;height:2px;background:#fff;border-radius:2px;transition:all .25s}.mobile-menu{display:none;position:absolute;top:var(--header-height);left:0;right:0;background:var(--color-primary);padding:16px;flex-direction:column;gap:12px;box-shadow:0 4px 12px #0000004d}.mobile-menu.open{display:flex}.mobile-menu a,.mobile-menu button{color:#d1d5db;font-size:1rem;padding:8px 0;border-bottom:1px solid #374151;text-align:left;background:none;border-top:none;border-left:none;border-right:none}.mobile-menu .header-nav-admin{color:#fbbf24}@media(max-width:767px){.hamburger{display:flex}.header-nav{display:none}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;border:none;transition:background .15s,opacity .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-accent-hover)}.btn-dark{background:var(--color-primary);color:#fff}.btn-dark:hover:not(:disabled){background:#333}.btn-danger{background:var(--color-danger);color:#fff}.btn-outline{background:none;border:1px solid var(--color-border);color:var(--color-text)}.btn-outline:hover{background:var(--color-bg)}.btn-sm{padding:4px 12px;font-size:.8rem}.btn-full{width:100%;padding:12px;font-size:1rem}.btn-line{background:var(--color-line);color:#fff;padding:14px 40px;font-size:1rem;border-radius:var(--radius-sm)}.btn-line:hover{background:#00a800}.badge{display:inline-block;padding:3px 10px;border-radius:var(--radius-full);font-size:.75rem;font-weight:500;color:#fff}.badge-pending{background:var(--color-warning)}.badge-confirmed{background:#3b82f6}.badge-shipped{background:#8b5cf6}.badge-delivered{background:var(--color-success)}.badge-cancelled{background:var(--color-danger)}.badge-merged{background:#6b7280}.badge-active{background:var(--color-success)}.badge-inactive{background:var(--color-danger)}.form-group{margin-bottom:16px}.form-label{display:block;font-size:.875rem;font-weight:500;margin-bottom:6px;color:var(--color-text)}.form-input,.form-select,.form-textarea{width:100%;padding:10px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:.9rem;background:var(--color-surface);color:var(--color-text);transition:border-color .15s}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--color-accent)}.card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}@media(min-width:640px){.product-grid{grid-template-columns:repeat(3,1fr);gap:16px}}@media(min-width:1024px){.product-grid{grid-template-columns:repeat(4,1fr);gap:20px}}.product-card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:box-shadow .2s,transform .2s}.product-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.product-card-img{width:100%;height:160px;object-fit:cover;background:#f3f4f6}@media(min-width:640px){.product-card-img{height:200px}}.product-card-img-placeholder{width:100%;height:160px;background:#f3f4f6;display:flex;align-items:center;justify-content:center;color:var(--color-muted);font-size:2rem}.product-card-body{padding:12px}@media(min-width:640px){.product-card-body{padding:16px}}.product-card-name{font-size:.9rem;font-weight:600;color:var(--color-text);margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.product-card-desc{font-size:.8rem;color:var(--color-muted);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.product-card-price{font-size:1.1rem;font-weight:700;color:var(--color-accent);margin-bottom:4px}.product-card-stock{font-size:.75rem;color:var(--color-muted);margin-bottom:12px}.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.filter-btn{padding:6px 14px;border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-surface);color:var(--color-muted);font-size:.85rem;transition:all .15s}.filter-btn:hover{border-color:var(--color-accent);color:var(--color-accent)}.filter-btn.active{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.pagination{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:24px;padding-bottom:24px}.pagination span{font-size:.875rem;color:var(--color-muted)}.tag-list{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.tag{background:#f3f4f6;color:var(--color-muted);padding:2px 10px;border-radius:var(--radius-full);font-size:.75rem}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:12px}.page-header h1{font-size:1.5rem;font-weight:700}@media(min-width:640px){.page-header h1{font-size:1.75rem}}.table-wrapper{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius);box-shadow:var(--shadow)}.table{width:100%;border-collapse:collapse;background:var(--color-surface);font-size:.875rem;white-space:nowrap}.table th{padding:10px 14px;text-align:left;background:#f9fafb;border-bottom:1px solid var(--color-border);font-weight:600;color:var(--color-muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.table td{padding:10px 14px;border-bottom:1px solid #f3f4f6;vertical-align:middle}.table tr:last-child td{border-bottom:none}.table tr:hover td{background:#fafafa}.cart-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--color-border)}.cart-item-img{width:72px;height:72px;object-fit:cover;border-radius:var(--radius-sm);flex-shrink:0;background:#f3f4f6}.cart-item-info{flex:1;min-width:0}.cart-item-name{font-weight:600;font-size:.9rem;margin-bottom:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cart-item-price{color:var(--color-muted);font-size:.85rem}.cart-item-qty{width:60px;padding:6px 8px;border:1px solid var(--color-border);border-radius:var(--radius-sm);text-align:center}.cart-item-subtotal{font-weight:600;min-width:80px;text-align:right;font-size:.9rem}.cart-item-remove{background:none;border:none;color:var(--color-danger);font-size:1.2rem;padding:4px;flex-shrink:0}.cart-total{text-align:right;padding:16px 0;border-top:2px solid var(--color-border);margin-top:8px}.cart-total-price{font-size:1.25rem;font-weight:700;margin-bottom:12px;color:var(--color-text)}.order-card{background:var(--color-surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.order-card-meta{font-size:.8rem;color:var(--color-muted);margin-bottom:4px}.order-card-price{font-size:1.1rem;font-weight:700;color:var(--color-text);margin-bottom:4px}.order-card-date{font-size:.8rem;color:var(--color-muted)}.order-card-right{text-align:right;flex-shrink:0}.order-card-detail-link{display:inline-block;margin-top:8px;font-size:.8rem;color:var(--color-accent)}.login-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:calc(100vh - var(--header-height));padding:24px;text-align:center}.login-page h1{font-size:2rem;margin-bottom:8px}.login-page p{color:var(--color-muted);margin-bottom:32px}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;padding:16px;z-index:200}.modal{background:var(--color-surface);border-radius:var(--radius);padding:24px;width:100%;max-width:480px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-md)}.modal h2{font-size:1.25rem;margin-bottom:20px}.modal-footer{display:flex;gap:8px;justify-content:flex-end;margin-top:20px}.empty-state{text-align:center;padding:48px 24px;color:var(--color-muted)}.empty-state p{margin-bottom:16px}.loading{text-align:center;padding:48px;color:var(--color-muted)}.detail-layout{display:grid;grid-template-columns:1fr;gap:24px}@media(min-width:768px){.detail-layout{grid-template-columns:1fr 1fr;align-items:start}}.detail-img{width:100%;border-radius:var(--radius);object-fit:cover;max-height:400px}.detail-info h1{font-size:1.5rem;font-weight:700;margin-bottom:8px}.detail-price{font-size:1.75rem;font-weight:700;color:var(--color-accent);margin-bottom:8px}.detail-meta{color:var(--color-muted);font-size:.875rem;margin-bottom:8px}.qty-row{display:flex;align-items:center;gap:12px;margin-top:20px;flex-wrap:wrap}.qty-input{width:72px;padding:10px;border:1px solid var(--color-border);border-radius:var(--radius-sm);text-align:center;font-size:1rem}.checkout-layout{max-width:600px;margin:0 auto}.checkout-item-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--color-border);font-size:.9rem}.checkout-total{text-align:right;font-size:1.125rem;font-weight:700;margin:12px 0 20px}.admin-filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.toast-container{position:fixed;top:calc(var(--header-height) + 12px);right:16px;z-index:400;display:flex;flex-direction:column;gap:8px;pointer-events:none}.toast{background:var(--color-primary);color:#fff;padding:12px 18px;border-radius:var(--radius);box-shadow:var(--shadow-md);display:flex;align-items:center;gap:10px;font-size:.9rem;font-weight:500;cursor:pointer;pointer-events:all;animation:toast-slide-in .25s cubic-bezier(.34,1.56,.64,1);min-width:200px}@keyframes toast-slide-in{0%{opacity:0;transform:translate(80px) scale(.9)}to{opacity:1;transform:translate(0) scale(1)}}.text-muted{color:var(--color-muted)}.text-sm{font-size:.875rem}.mt-4{margin-top:16px}.mb-4{margin-bottom:16px}.text-right{text-align:right}