:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;color-scheme:light;background-color:#f8fafc;color:#0f172a;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px;min-height:100vh}:root{--primary: #2563eb;--primary-hover: #1d4ed8;--secondary: #1e293b;--bg-main: #f8fafc;--bg-card: #ffffff;--text-main: #0f172a;--text-muted: #64748b;--border: #e2e8f0;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .1);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius: 8px;--content-width: 1400px}*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-main);color:var(--text-main);line-height:1.5}a{cursor:pointer;color:var(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-hover)}button{cursor:pointer;font-family:inherit;transition:all .2s}#root{display:flex;flex-direction:column;min-height:100vh;width:100%}.main-content{flex:1;max-width:var(--content-width);width:100%;margin:0 auto;padding:0 24px 60px}.site-header{background:var(--secondary);color:#fff;padding:0;height:64px;display:flex;justify-content:center;position:sticky;top:0;z-index:1000;box-shadow:var(--shadow-md);width:100%}.header-container{width:100%;max-width:var(--content-width);padding:0 24px;display:flex;justify-content:space-between;align-items:center}.site-header h1{font-size:1.25rem;margin:0;font-weight:700;letter-spacing:-.025em}.user-info{display:flex;gap:16px;align-items:center;font-size:.875rem}.user-info span{color:#cbd5e1}.user-info a{color:#60a5fa;font-weight:500}.user-info button{background:transparent;border:1px solid #475569;color:#fff;padding:6px 14px;border-radius:6px;font-size:.875rem}.user-info button:hover{background:#ffffff1a;border-color:#fff}.main-nav{background:#fff;border-bottom:1px solid var(--border);margin-bottom:24px;width:100%;display:flex;justify-content:center}.main-nav ul{width:100%;max-width:var(--content-width);margin:0;display:flex;list-style:none;gap:32px;padding:0 24px;height:48px;align-items:center}.main-nav li a{color:var(--text-muted);font-weight:500;font-size:.9375rem;position:relative;padding:12px 0}.main-nav li a:hover{color:var(--primary)}.cart-toggle{position:fixed;right:32px;bottom:32px;z-index:999}.cart-toggle button{background:var(--primary);color:#fff;border:none;width:64px;height:64px;border-radius:50%;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.8125rem;padding:8px}.cart-toggle button:hover{transform:scale(1.05);background:var(--primary-hover)}.shopping-cart{position:fixed;right:0;top:0;bottom:0;width:400px;background:#fff;box-shadow:-4px 0 30px #00000026;padding:32px;z-index:2000;display:flex;flex-direction:column}.shopping-cart h3{margin-top:0;font-size:1.5rem;border-bottom:1px solid var(--border);padding-bottom:20px}.shopping-cart ul{list-style:none;padding:0;margin:0;overflow-y:auto;flex:1}.cart-item{display:flex;flex-direction:column;padding:20px 0;border-bottom:1px solid var(--border)}.cart-item-info{display:flex;justify-content:space-between;margin-bottom:16px}.cart-item-info span:first-child{font-weight:600;color:var(--secondary);font-size:1.0625rem}.cart-item-info span:last-child{color:var(--primary);font-weight:700}.cart-item-controls{display:flex;align-items:center;gap:16px}.cart-item-controls input{width:70px;padding:8px;border:1px solid var(--border);border-radius:6px;text-align:center}.cart-item-controls button{background:#fee2e2;color:#dc2626;border:none;padding:8px 16px;border-radius:6px;font-size:.875rem;font-weight:600}.cart-item-controls button:hover{background:#fecaca}.cart-total{font-size:1.25rem;font-weight:700;margin-top:32px;display:flex;justify-content:space-between}.checkout-btn{width:100%;background:var(--secondary);color:#fff;border:none;padding:16px;border-radius:var(--radius);font-weight:700;margin-top:24px}.checkout-btn:hover{background:#0f172a}.breadcrumb{max-width:var(--content-width);margin:24px auto;padding:0 24px;width:100%;font-size:.875rem;color:var(--text-muted)}.breadcrumb a{color:var(--text-muted)}.breadcrumb a:hover{color:var(--primary)}.product-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:32px}.product-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:20px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column}.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--primary)}.product-card img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:8px;cursor:pointer;margin-bottom:16px}.product-card h3{margin:0 0 12px;font-size:1.125rem;cursor:pointer;color:var(--secondary);flex:1;line-height:1.4}.product-card p{font-size:1.25rem;font-weight:700;color:var(--primary);margin:0 0 20px}.product-card button{width:100%;background:#fff;border:1px solid var(--primary);color:var(--primary);padding:12px;border-radius:8px;font-weight:700}.product-card button:hover{background:var(--primary);color:#fff}.product-detail{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;background:#fff;padding:60px;border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow-sm)}.product-detail img{width:100%;border-radius:12px;box-shadow:var(--shadow-md)}.product-detail h2{margin:0 0 20px;font-size:2.5rem;color:var(--secondary);line-height:1.2}.product-detail p:not(.price){color:var(--text-muted);font-size:1.125rem;margin-bottom:32px;line-height:1.6}.product-detail .price{font-size:2rem;font-weight:800;color:var(--primary);margin-bottom:40px}.product-detail button{background:var(--primary);color:#fff;border:none;padding:18px 40px;border-radius:10px;font-weight:700;font-size:1.125rem}.product-detail button:hover{background:var(--primary-hover);transform:translateY(-2px)}.auth-form{max-width:440px;margin:80px auto;padding:48px;background:#fff;border-radius:16px;box-shadow:var(--shadow-lg);border:1px solid var(--border)}.auth-form h2{margin:0 0 32px;text-align:center;font-size:2rem;font-weight:800;color:var(--secondary)}.auth-form input{display:block;width:100%;padding:14px 18px;margin-bottom:24px;border:1px solid var(--border);border-radius:10px;font-size:1rem;transition:border-color .2s}.auth-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px #2563eb1a}.auth-form button{width:100%;padding:16px;background:var(--primary);color:#fff;border:none;border-radius:10px;font-weight:700;font-size:1.0625rem;margin-bottom:24px}.auth-form button:hover{background:var(--primary-hover)}.error-msg{background:#fef2f2;color:#dc2626;padding:14px 18px;border-radius:10px;font-size:.875rem;margin-bottom:28px;border-left:5px solid #dc2626}.site-footer{margin-top:auto;padding:40px;text-align:center;background:#fff;border-top:1px solid var(--border);color:var(--text-muted);font-size:.875rem}@media(max-width:1024px){.product-detail{gap:40px;padding:40px}}@media(max-width:768px){.product-detail{grid-template-columns:1fr;padding:24px}.shopping-cart{width:100%}.site-header h1{font-size:1.125rem}.user-info span{display:none}.header-container{padding:0 16px}.main-nav ul{padding:0 16px;gap:16px;overflow-x:auto}}