body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}*{box-sizing:border-box;margin:0;padding:0}:root{--primary:#2563eb;--primary-dark:#1d4ed8;--secondary:#64748b;--background:#f8fafc;--surface:#fff;--text:#1e293b;--text-light:#64748b;--border:#e2e8f0;--success:#10b981;--danger:#ef4444}body{background:var(--background);color:var(--text);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}.header{background:var(--surface);z-index:100;position:sticky;top:0;box-shadow:0 1px 3px #0000001a}.header-container{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:1rem 1.5rem;display:flex}.logo{color:var(--primary);font-size:1.5rem;font-weight:700}.nav{gap:2rem;display:flex}.nav a{color:var(--text);font-weight:500;transition:color .2s}.nav a:hover{color:var(--primary)}.cart-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;transition:background .2s;position:relative}.cart-btn:hover{background:var(--primary-dark)}.cart-badge{background:var(--danger);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:.75rem;display:flex;position:absolute;top:-8px;right:-8px}.hero{text-align:center;background:linear-gradient(135deg, var(--primary), var(--primary-dark));color:#fff;padding:4rem 1.5rem}.hero h1{margin-bottom:1rem;font-size:2.5rem}.hero p{opacity:.9;font-size:1.25rem}.products-section{max-width:1200px;margin:0 auto;padding:3rem 1.5rem}.products-section h2{text-align:center;margin-bottom:2rem;font-size:1.75rem}.products-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:2rem;display:grid}.product-card{background:var(--surface);border-radius:12px;transition:transform .2s,box-shadow .2s;display:block;overflow:hidden;box-shadow:0 1px 3px #0000001a}.product-card:hover{transform:translateY(-4px);box-shadow:0 8px 25px #00000026}.product-image{aspect-ratio:1;position:relative;overflow:hidden}.product-image img{object-fit:cover;width:100%;height:100%}.product-brand{color:#fff;background:#000000b3;border-radius:20px;padding:4px 12px;font-size:.75rem;font-weight:500;position:absolute;top:12px;left:12px}.product-info{padding:1.25rem}.product-name{margin-bottom:.5rem;font-size:1.1rem;line-height:1.3}.product-rating{color:#fbbf24;margin-bottom:.5rem;font-size:.9rem}.product-rating span{color:var(--text-light);margin-left:.5rem}.product-price{color:var(--primary);margin-bottom:1rem;font-size:1.25rem;font-weight:700}.add-to-cart-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:.75rem;font-size:1rem;transition:background .2s}.add-to-cart-btn:hover{background:var(--primary-dark)}.product-detail-page{max-width:1200px;margin:0 auto;padding:2rem 1.5rem}.back-btn{color:var(--primary);cursor:pointer;background:0 0;border:none;align-items:center;gap:.5rem;margin-bottom:2rem;font-size:1rem;display:flex}.back-btn:hover{text-decoration:underline}.product-detail{background:var(--surface);border-radius:16px;grid-template-columns:1fr 1fr;gap:3rem;padding:2rem;display:grid}.product-detail-image{aspect-ratio:1;border-radius:12px;overflow:hidden}.product-detail-image img{object-fit:cover;width:100%;height:100%}.product-detail-brand{color:var(--primary);text-transform:uppercase;letter-spacing:.05em;font-size:.9rem;font-weight:600}.product-detail-info h1{margin:.5rem 0 1rem;font-size:2rem}.product-detail-rating{color:#fbbf24;margin-bottom:1rem;font-size:1.1rem}.product-detail-rating span{color:var(--text-light);margin-left:.5rem}.product-detail-price{color:var(--primary);margin-bottom:1rem;font-size:2rem;font-weight:700}.product-detail-desc{color:var(--text-light);margin-bottom:2rem;line-height:1.8}.product-specs{background:var(--background);border-radius:12px;margin-bottom:2rem;padding:1.5rem}.product-specs h3{margin-bottom:1rem;font-size:1.1rem}.product-specs ul{list-style:none}.product-specs li{border-bottom:1px solid var(--border);padding:.5rem 0}.product-specs li:last-child{border-bottom:none}.product-specs strong{color:var(--text)}.buy-btn{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:12px;width:100%;padding:1rem 2rem;font-size:1.1rem;font-weight:600;transition:background .2s}.buy-btn:hover{background:var(--primary-dark)}.cart-overlay{z-index:200;background:#00000080;justify-content:flex-end;display:flex;position:fixed;inset:0}.cart-drawer{background:var(--surface);flex-direction:column;width:100%;max-width:420px;height:100%;animation:.3s slideIn;display:flex}@keyframes slideIn{0%{transform:translate(100%)}to{transform:translate(0)}}.cart-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:1.5rem;display:flex}.cart-header h2{font-size:1.25rem}.close-btn{cursor:pointer;color:var(--text-light);background:0 0;border:none;font-size:2rem}.cart-empty{color:var(--text-light);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:1rem;display:flex}.cart-empty a{color:var(--primary);font-weight:500}.cart-items{flex:1;padding:1rem;overflow-y:auto}.cart-item{background:var(--background);border-radius:12px;gap:1rem;margin-bottom:1rem;padding:1rem;display:flex;position:relative}.cart-item img{object-fit:cover;border-radius:8px;width:80px;height:80px}.cart-item-info{flex:1}.cart-item-info h4{margin-bottom:.25rem;font-size:.95rem}.cart-item-price{color:var(--primary);margin-bottom:.5rem;font-weight:600}.quantity-controls{align-items:center;gap:.75rem;display:flex}.quantity-controls button{border:1px solid var(--border);background:var(--surface);cursor:pointer;border-radius:6px;width:28px;height:28px;font-size:1rem}.quantity-controls button:hover{background:var(--background)}.quantity-controls span{text-align:center;min-width:20px;font-weight:600}.remove-btn{color:var(--danger);cursor:pointer;background:0 0;border:none;font-size:1.25rem;position:absolute;top:.75rem;right:.75rem}.cart-footer{border-top:1px solid var(--border);padding:1.5rem}.cart-total{justify-content:space-between;margin-bottom:1rem;font-size:1.25rem;font-weight:700;display:flex}.cart-total span:last-child{color:var(--primary)}.checkout-btn{background:var(--success);color:#fff;cursor:pointer;border:none;border-radius:10px;width:100%;margin-bottom:.75rem;padding:1rem;font-size:1rem;font-weight:600;transition:background .2s}.checkout-btn:hover{background:#059669}.continue-btn{border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:10px;width:100%;padding:.875rem;font-size:1rem;transition:background .2s}.continue-btn:hover{background:var(--background)}.not-found{text-align:center;padding:4rem}.not-found h2{margin-bottom:1rem}.not-found button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem}@media (width<=768px){.nav{display:none}.product-detail{grid-template-columns:1fr;gap:2rem}.hero h1{font-size:1.75rem}.cart-drawer{max-width:100%}}