:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}:root{--primary-color: #3085ee;--primary-dark: #1a5cb8;--text-color: #333;--text-light: #666;--bg-light: #f8f9fa;--border-color: #e0e0e0;--success-color: #28a745;--error-color: #dc3545}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;color:var(--text-color);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 20px}.app{min-height:100vh;display:flex;flex-direction:column}.header{background:#fff;box-shadow:0 2px 8px #0000001a;position:sticky;top:0;z-index:100}.header .container{display:flex;align-items:center;justify-content:space-between;padding:15px 20px}.header .logo h1{color:var(--primary-color);font-size:1.5rem;text-decoration:none}.header .logo{text-decoration:none}.nav{display:flex;gap:30px}.nav a{color:var(--text-color);text-decoration:none;font-weight:500;transition:color .2s}.nav a:hover{color:var(--primary-color)}.header-actions{display:flex;align-items:center;gap:20px}.language-switcher button{background:none;border:1px solid var(--border-color);padding:5px 10px;cursor:pointer;transition:all .2s}.language-switcher button.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.cart-link{color:var(--text-color);text-decoration:none;font-weight:500}.auth-links a,.user-menu button{color:var(--text-color);text-decoration:none;margin-left:15px}.user-menu button{background:none;border:none;cursor:pointer}.main{flex:1;padding:40px 0}.btn{display:inline-block;padding:12px 24px;border:none;border-radius:6px;cursor:pointer;font-size:1rem;font-weight:500;text-decoration:none;transition:all .2s}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-primary:disabled{background:#ccc;cursor:not-allowed}.btn-secondary{background:#fff;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover{background:var(--bg-light)}.hero{background:linear-gradient(135deg,var(--primary-color) 0%,var(--primary-dark) 100%);color:#fff;padding:80px 0;text-align:center}.hero h1{font-size:2.5rem;margin-bottom:15px}.hero p{font-size:1.2rem;opacity:.9;margin-bottom:30px}.hero-buttons{display:flex;gap:15px;justify-content:center}.hero .btn-secondary{background:transparent;color:#fff;border-color:#fff}.hero .btn-secondary:hover{background:#ffffff1a}.features{padding:60px 0;background:var(--bg-light)}.features .container{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.feature{text-align:center;padding:30px;background:#fff;border-radius:10px;box-shadow:0 2px 10px #0000000d}.feature h3{color:var(--primary-color);margin-bottom:10px}.products-page h1{margin-bottom:30px}.products-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:30px}.product-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 10px #00000014;transition:transform .2s,box-shadow .2s;text-decoration:none;color:var(--text-color)}.product-card:hover{transform:translateY(-5px);box-shadow:0 5px 20px #0000001f}.product-card img{width:100%;height:300px;object-fit:cover}.product-card h3{padding:15px;font-size:1.1rem}.product-card .price{padding:0 15px 15px;color:var(--primary-color);font-weight:600}.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:50px}.product-images .main-image{width:100%;border-radius:10px}.product-info h1{font-size:2rem;margin-bottom:15px}.product-info .description{color:var(--text-light);margin-bottom:20px}.product-info .price{font-size:1.5rem;color:var(--primary-color);font-weight:600;margin-bottom:25px}.option-group{margin-bottom:20px}.option-group label{display:block;font-weight:500;margin-bottom:10px}.color-options{display:flex;gap:10px}.color-btn{width:40px;height:40px;border-radius:50%;border:2px solid var(--border-color);cursor:pointer;transition:all .2s}.color-btn.active{border-color:var(--primary-color);transform:scale(1.1)}.size-options{display:flex;gap:10px}.size-btn{padding:10px 20px;border:2px solid var(--border-color);background:#fff;border-radius:6px;cursor:pointer;transition:all .2s}.size-btn.active{border-color:var(--primary-color);background:var(--primary-color);color:#fff}.option-group input[type=number]{width:80px;padding:10px;border:1px solid var(--border-color);border-radius:6px;font-size:1rem}.in-stock{color:var(--success-color);margin-bottom:20px}.out-of-stock{color:var(--error-color);margin-bottom:20px}.add-to-cart{width:100%;padding:15px;font-size:1.1rem}.cart-page h1,.cart-items{margin-bottom:30px}.cart-item{display:flex;align-items:center;padding:20px;background:#fff;border-radius:10px;margin-bottom:15px;box-shadow:0 2px 8px #0000000d}.cart-item .item-info{flex:1}.cart-item .item-info h3{margin-bottom:5px}.cart-item .item-info p{color:var(--text-light);font-size:.9rem}.cart-item .item-quantity input{width:60px;padding:8px;border:1px solid var(--border-color);border-radius:4px;text-align:center}.cart-item .item-total{width:120px;text-align:right;font-weight:600;margin-left:20px}.cart-item .btn-remove{background:none;border:none;font-size:1.5rem;color:var(--text-light);cursor:pointer;margin-left:20px}.cart-summary{background:#fff;padding:30px;border-radius:10px;box-shadow:0 2px 8px #0000000d;max-width:400px;margin-left:auto}.summary-row{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border-color)}.summary-row.total{font-size:1.2rem;font-weight:600;border-bottom:none;padding-top:15px}.btn-checkout{width:100%;margin-top:20px}.checkout-grid{display:grid;grid-template-columns:2fr 1fr;gap:40px}.checkout-form section{background:#fff;padding:25px;border-radius:10px;margin-bottom:20px;box-shadow:0 2px 8px #0000000d}.checkout-form h2{margin-bottom:20px;font-size:1.2rem}.form-row{margin-bottom:15px}.form-row.two-cols{display:grid;grid-template-columns:1fr 1fr;gap:15px}.checkout-form input,.checkout-form textarea{width:100%;padding:12px;border:1px solid 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#0000001a;width:100%;max-width:400px}.auth-card h1{text-align:center;margin-bottom:30px}.form-group{margin-bottom:15px}.auth-card input{width:100%;padding:12px;border:1px solid var(--border-color);border-radius:6px;font-size:1rem}.auth-card .btn{width:100%;margin-top:10px}.auth-link{text-align:center;margin-top:20px;color:var(--text-light)}.auth-link a{color:var(--primary-color)}.footer{background:#333;color:#fff;padding:40px 0;text-align:center}.footer-links{display:flex;justify-content:center;gap:30px;margin-bottom:20px}.footer-links a{color:#fff;text-decoration:none;opacity:.8}.footer-links a:hover{opacity:1}.footer p{opacity:.6;font-size:.9rem}.loading{text-align:center;padding:60px;color:var(--text-light)}.error{text-align:center;padding:60px;color:var(--error-color)}@media(max-width:768px){.header .container{flex-wrap:wrap}.nav{order:3;width:100%;justify-content:center;padding-top:15px}.hero h1{font-size:1.8rem}.features .container,.product-detail,.checkout-grid,.form-row.two-cols{grid-template-columns:1fr}}