:root{--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #60a5fa;--bg: #f8fafc;--bg-card: #ffffff;--text: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--border: #e2e8f0;--danger: #ef4444;--success: #10b981;--warning: #f59e0b;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--max-width: 1200px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.header{background:var(--header-bg, #fff);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.header-inner{max-width:var(--max-width);margin:0 auto;padding:10px 20px;display:flex;align-items:center;gap:12px}.logo{font-size:1.4rem;font-weight:700;color:var(--header-text, var(--text));text-decoration:none!important}.hamburger{display:flex;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;padding:6px;background:transparent;border:none;cursor:pointer}.hamburger span{display:block;width:22px;height:2.5px;background:var(--header-text, var(--text));border-radius:2px;transition:all .2s}.hamburger span.open:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger span.open:nth-child(2){opacity:0}.hamburger span.open:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.header-icons{display:flex;align-items:center;gap:4px;margin-left:auto}.icon-link{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;text-decoration:none!important;font-size:18px;transition:all .15s;position:relative}.icon-link:hover{background:var(--border)}.cart-icon{position:relative}.badge{background:var(--danger);color:#fff;font-size:10px;padding:1px 5px;border-radius:10px;position:absolute;top:-2px;right:-4px;line-height:1.3}@media(max-width:768px){.header-icons{display:none}}.menu-overlay{position:fixed;inset:0;background:#0006;z-index:200}.slide-menu{position:fixed;top:0;left:-300px;bottom:0;width:280px;background:var(--bg-card);z-index:300;padding:60px 16px 20px;overflow-y:auto;transition:left .25s ease;box-shadow:2px 0 12px #00000026}.slide-menu.open{left:0}.menu-close{position:absolute;top:16px;right:16px;background:none;border:none;font-size:1.2rem;cursor:pointer;color:var(--text-muted)}.menu-link{display:block;padding:10px 12px;color:var(--text);text-decoration:none!important;border-radius:var(--radius);font-size:.95rem;transition:background .15s}.menu-link:hover{background:var(--border)}.logout-link{background:none;border:none;cursor:pointer;width:100%;text-align:left;font-size:.95rem}.menu-user{display:block;padding:10px 12px;color:var(--text-muted);font-size:.85rem}.menu-divider{height:1px;background:var(--border);margin:8px 0}.menu-theme{padding:4px 0}.menu-theme-label{font-size:.85rem;font-weight:600;color:var(--text-secondary);padding:4px 12px 8px}.theme-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px;padding:0 8px}.theme-btn{display:flex;align-items:center;gap:8px;padding:8px 10px;background:transparent;border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all .15s}.theme-btn:hover{background:var(--border)}.theme-btn.active{border-color:var(--primary)}.theme-dot{width:16px;height:16px;border-radius:50%;flex-shrink:0;box-shadow:0 1px 3px #0003}.theme-name{font-size:12px;color:var(--text-secondary)}.theme-btn.active .theme-name{color:var(--primary);font-weight:600}.main{max-width:var(--max-width);margin:0 auto;padding:24px 20px;min-height:60vh}.footer{text-align:center;padding:32px 20px;color:var(--text-muted);font-size:.85rem;border-top:1px solid var(--border);margin-top:40px;background:var(--bg-card)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 16px;border:none;border-radius:var(--radius);cursor:pointer;font-size:.9rem;font-weight:500;transition:all .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-sm{padding:4px 12px;font-size:.85rem}.btn-lg{padding:12px 24px;font-size:1rem}.btn-block{width:100%}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.85rem;font-weight:500;margin-bottom:4px;color:var(--text-secondary)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;background:var(--bg-card);color:var(--text)}.form-group textarea{resize:vertical;min-height:60px}.error{color:var(--danger);font-size:.85rem;margin:8px 0}.msg{color:var(--success);font-size:.85rem;margin:8px 0}.empty,.loading{text-align:center;padding:40px;color:var(--text-muted)}.hero{background:linear-gradient(135deg,var(--hero-from, var(--primary)) 0%,var(--hero-to, #7c3aed) 100%);color:#fff;padding:60px 40px;border-radius:16px;text-align:center;margin-bottom:40px}.hero h1{font-size:2.2rem;margin-bottom:12px}.hero p{font-size:1.1rem;opacity:.9;margin-bottom:24px}.hero .btn{background:#fff;color:var(--primary);font-weight:600}.hero .btn:hover{background:#f0f0ff}.section{margin-bottom:40px}.section h2{font-size:1.3rem;margin-bottom:16px}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}.category-card{display:flex;align-items:center;justify-content:center;padding:20px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);font-weight:500;text-decoration:none!important;color:var(--text);transition:all .15s}.category-card:hover{border-color:var(--primary);color:var(--primary);box-shadow:var(--shadow-md)}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;text-decoration:none!important;color:var(--text);transition:all .2s}.product-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.product-image{aspect-ratio:1;overflow:hidden;background:#f1f5f9;display:flex;align-items:center;justify-content:center;position:relative}.product-image img{width:100%;height:100%;object-fit:cover}.product-image-placeholder{font-size:3rem}.sale-badge{position:absolute;top:8px;left:8px;background:var(--danger);color:#fff;font-size:.75rem;font-weight:600;padding:2px 8px;border-radius:4px}.product-info{padding:12px}.product-category{font-size:.75rem;color:var(--text-muted)}.product-name{font-size:.9rem;font-weight:500;margin:4px 0 8px;line-height:1.3}.current-price{font-weight:700;font-size:1.1rem;color:var(--text)}.original-price{font-size:.85rem;color:var(--text-muted);text-decoration:line-through;margin-left:8px}.out-of-stock{font-size:.8rem;color:var(--danger)}.filters{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap;align-items:center}.filter-group{display:flex;gap:8px;align-items:center}.search-input{padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;min-width:200px}.filters select{padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius);font-size:.85rem;background:var(--bg-card);color:var(--text)}.pagination{display:flex;gap:8px;justify-content:center;margin-top:32px}.page-btn{width:36px;height:36px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-card);color:var(--text);cursor:pointer;font-size:.9rem}.page-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.product-detail{max-width:900px;margin:0 auto}.back-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;margin-bottom:16px;font-size:.9rem}.detail-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:40px}.detail-image{background:#f1f5f9;border-radius:var(--radius);overflow:hidden;aspect-ratio:1;display:flex;align-items:center;justify-content:center}.detail-image img{width:100%;height:100%;object-fit:cover}.image-placeholder{font-size:6rem}.detail-info h1{font-size:1.5rem;margin:8px 0 16px}.category-tag{font-size:.8rem;color:var(--primary);background:#eff6ff;padding:2px 10px;border-radius:12px}.price-section{margin:16px 0}.price{font-size:1.8rem;font-weight:700}.compare-price{font-size:1rem;color:var(--text-muted);text-decoration:line-through;margin-left:12px}.rating{color:#f59e0b;margin:8px 0}.description{color:var(--text-secondary);margin:16px 0;line-height:1.8}.stock-info{margin:12px 0}.in-stock{color:var(--success);font-weight:500}.no-stock{color:var(--danger);font-weight:500}.add-to-cart{display:flex;gap:12px;align-items:center;margin-top:20px}.add-to-cart select{padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius)}.reviews-section{border-top:1px solid var(--border);padding-top:32px}.reviews-section h2{margin-bottom:16px}.review-form{display:flex;gap:12px;margin-bottom:24px;align-items:flex-start;flex-wrap:wrap}.review-form select{padding:6px 10px;border:1px solid var(--border);border-radius:var(--radius)}.review-form textarea{flex:1;min-width:200px;padding:6px 10px;border:1px solid var(--border);border-radius:var(--radius);resize:vertical;min-height:40px}.review-item{padding:12px 0;border-bottom:1px solid var(--border)}.review-header{display:flex;gap:12px;align-items:center;margin-bottom:4px}.review-stars{color:#f59e0b}.review-user{font-size:.85rem;color:var(--text-muted)}.cart-items{display:flex;flex-direction:column;gap:12px}.cart-item{display:flex;gap:16px;align-items:center;padding:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}.cart-item-image{width:64px;height:64px;background:#f1f5f9;border-radius:6px;display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}.cart-item-image img{width:100%;height:100%;object-fit:cover}.cart-item-info{flex:1}.cart-item-info h3{font-size:.95rem}.item-price{color:var(--text-secondary);font-size:.85rem}.cart-item-controls{display:flex;gap:12px;align-items:center}.cart-item-controls select{padding:4px 8px;border:1px solid var(--border);border-radius:4px}.subtotal{font-weight:600;min-width:80px;text-align:right}.btn-remove{background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:1.1rem}.btn-remove:hover{color:var(--danger)}.cart-summary{margin-top:24px;padding:24px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius)}.total-row{display:flex;justify-content:space-between;margin-bottom:16px;font-size:1.1rem}.total-price{font-weight:700;font-size:1.3rem}.empty-cart{text-align:center;padding:60px 20px}.checkout-layout{display:grid;grid-template-columns:1fr 360px;gap:32px}.shipping-form,.order-summary{background:var(--bg-card);padding:24px;border:1px solid var(--border);border-radius:var(--radius)}.shipping-form h2,.order-summary h2{font-size:1.1rem;margin-bottom:16px}.summary-item{display:flex;justify-content:space-between;padding:8px 0;font-size:.9rem;color:var(--text-secondary);border-bottom:1px solid var(--border)}.summary-total{display:flex;justify-content:space-between;padding:12px 0 0;font-weight:700;font-size:1.1rem}.order-list{display:flex;flex-direction:column;gap:12px}.order-card{display:block;padding:16px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);text-decoration:none!important;color:var(--text);transition:box-shadow .15s}.order-card:hover{box-shadow:var(--shadow-md)}.order-header{display:flex;justify-content:space-between;margin-bottom:8px}.status{font-size:.8rem;padding:2px 10px;border-radius:12px;font-weight:500}.status-pending{background:#fef3c7;color:#92400e}.status-processing{background:#dbeafe;color:#1e40af}.status-shipped{background:#d1fae5;color:#065f46}.status-completed{background:#e0e7ff;color:#3730a3}.status-cancelled{background:#fee2e2;color:#991b1b}.order-items-preview{font-size:.85rem;color:var(--text-secondary);display:flex;flex-wrap:wrap;gap:8px}.order-footer{display:flex;justify-content:space-between;margin-top:8px;font-size:.85rem;color:var(--text-muted)}.order-total{font-weight:600;color:var(--text)}.auth-page{display:flex;justify-content:center;padding:40px 20px}.auth-form{width:100%;max-width:400px;background:var(--bg-card);padding:32px;border:1px solid var(--border);border-radius:var(--radius)}.auth-form h1{text-align:center;margin-bottom:24px}.auth-link{text-align:center;margin-top:16px;font-size:.85rem;color:var(--text-muted)}@media(max-width:768px){.detail-layout,.checkout-layout{grid-template-columns:1fr}.hero{padding:40px 20px}.hero h1{font-size:1.6rem}}.toast-container{position:fixed;top:70px;right:20px;z-index:500;display:flex;flex-direction:column;gap:8px}.toast{padding:10px 20px;border-radius:var(--radius);color:#fff;font-size:.9rem;animation:toast-in .25s ease-out;box-shadow:var(--shadow-md);min-width:200px}.toast-success{background:var(--success)}.toast-error{background:var(--danger)}.toast-info{background:var(--primary)}@keyframes toast-in{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.admin-page h1{margin-bottom:16px}.admin-tabs{display:flex;gap:4px;margin-bottom:24px;border-bottom:2px solid var(--border)}.admin-tab{padding:10px 20px;background:none;border:none;cursor:pointer;font-size:.9rem;color:var(--text-secondary);border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .15s}.admin-tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.admin-tab:hover{color:var(--primary)}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center}.stat-card.highlight{border-color:var(--primary)}.stat-value{font-size:1.8rem;font-weight:700;color:var(--text)}.stat-label{font-size:.85rem;color:var(--text-muted);margin-top:4px}.admin-toolbar{display:flex;gap:12px;margin-bottom:16px}.admin-table{width:100%;border-collapse:collapse;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;font-size:.9rem}.admin-table th{background:var(--border);padding:10px 12px;text-align:left;font-weight:600;font-size:.85rem;color:var(--text-secondary)}.admin-table td{padding:10px 12px;border-top:1px solid var(--border)}.admin-table tr:hover td{background:#00000005}.action-cell{display:flex;gap:6px}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{opacity:.9}.active-badge{color:var(--success);font-weight:500;font-size:.8rem}.inactive-badge{color:var(--text-muted);font-size:.8rem}.status-select{padding:4px 8px;border:1px solid var(--border);border-radius:4px;font-size:.85rem;background:var(--bg-card);color:var(--text)}.admin-form-overlay{position:fixed;inset:0;background:#0006;z-index:400;display:flex;align-items:center;justify-content:center}.admin-form{background:var(--bg-card);border-radius:var(--radius);padding:24px;width:90%;max-width:500px;max-height:85vh;overflow-y:auto;box-shadow:var(--shadow-md)}.admin-form h3{margin-bottom:16px}.form-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.form-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:16px}.checkbox-label{display:flex;align-items:center;gap:8px;font-size:.9rem;margin:8px 0;cursor:pointer}.image-preview{width:120px;height:120px;object-fit:cover;border-radius:var(--radius);border:1px solid var(--border);margin-bottom:8px;display:block}.upload-status{font-size:.8rem;color:var(--text-muted);margin-left:8px}