:root{--primary: #4f46e5;--primary-dark: #4338ca;--bg: #f5f6fa;--card: #ffffff;--text: #1f2937;--muted: #6b7280;--border: #e5e7eb;--danger: #dc2626}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.container{max-width:1080px;margin:0 auto;padding:24px 16px}.page-title{font-size:1.6rem;margin-bottom:16px}.btn{border:none;border-radius:8px;padding:10px 16px;font-size:.95rem;cursor:pointer;transition:background .15s ease,opacity .15s ease}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover:not(:disabled){background:#f3f4f6}.btn-block{width:100%}.navbar{display:flex;align-items:center;justify-content:space-between;background:var(--card);padding:12px 24px;box-shadow:0 1px 3px #00000014}.navbar-brand{font-weight:700;font-size:1.2rem;color:var(--primary)}.navbar-actions{display:flex;align-items:center;gap:16px}.navbar-user{color:var(--muted);font-size:.9rem}.cart-link{position:relative;font-weight:600}.cart-badge{position:absolute;top:-10px;right:-16px;background:var(--danger);color:#fff;border-radius:999px;font-size:.7rem;padding:2px 6px;min-width:18px;text-align:center}.login-wrap{min-height:80vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--card);padding:32px;border-radius:12px;box-shadow:0 4px 20px #00000014;width:100%;max-width:360px}.login-title{margin:0 0 4px;text-align:center}.login-subtitle{text-align:center;color:var(--muted);margin:0 0 20px;font-size:.85rem}.field{display:block;margin-bottom:16px}.field span{display:block;margin-bottom:6px;font-size:.85rem;color:var(--muted)}.field input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:.95rem}.field input:focus{outline:none;border-color:var(--primary)}.alert{padding:10px 12px;border-radius:8px;margin-bottom:16px;font-size:.9rem}.alert-error{background:#fee2e2;color:var(--danger)}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}.product-card{background:var(--card);border-radius:12px;overflow:hidden;box-shadow:0 2px 8px #0000000f;display:flex;flex-direction:column}.product-image{width:100%;height:160px;object-fit:cover}.product-body{padding:14px;display:flex;flex-direction:column;flex:1}.product-name{margin:0 0 6px;font-size:1.05rem}.product-desc{color:var(--muted);font-size:.85rem;flex:1;margin:0 0 12px}.product-footer{display:flex;align-items:center;justify-content:space-between}.product-price{font-weight:700;color:var(--primary)}.spinner-wrap{text-align:center;padding:48px 0;color:var(--muted)}.spinner{width:40px;height:40px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;margin:0 auto 12px;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.empty-message{color:var(--muted);text-align:center;padding:24px 0}.empty-cart{text-align:center}.cart-list{display:flex;flex-direction:column;gap:12px}.cart-item{display:flex;align-items:center;gap:16px;background:var(--card);padding:12px;border-radius:12px;box-shadow:0 2px 8px #0000000d}.cart-thumb{width:64px;height:64px;object-fit:cover;border-radius:8px}.cart-info{flex:1}.cart-info h3{margin:0 0 4px;font-size:1rem}.qty-controls{display:flex;align-items:center;gap:10px}.qty{min-width:24px;text-align:center;font-weight:600}.line-total{min-width:80px;text-align:right;font-weight:700}.cart-summary{display:flex;align-items:center;justify-content:space-between;margin-top:20px;padding:16px;background:var(--card);border-radius:12px;font-size:1.1rem}@media (max-width: 600px){.cart-item{flex-wrap:wrap}.line-total{width:100%;text-align:left}}