*{box-sizing:border-box;margin:0;padding:0}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;min-height:100vh}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.header{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-bottom:1px solid #0000000f;box-shadow:0 2px 8px #00000014;position:sticky;top:0;z-index:100}.header-container{align-items:center;display:flex;justify-content:space-between;margin:0 auto;max-width:1200px;padding:1rem 2rem}.logo{color:#2c3e50;text-decoration:none}.logo h1{font-size:1.5rem;font-weight:700;letter-spacing:-.5px}.nav{display:flex;gap:2rem}.nav-link{color:#34495e;font-weight:500;position:relative;text-decoration:none;transition:all .3s ease}.nav-link:after{background:linear-gradient(90deg,#3498db,#2ecc71);bottom:-4px;content:"";height:2px;left:0;position:absolute;transition:width .3s ease;width:0}.nav-link:hover{color:#3498db}.nav-link:hover:after{width:100%}@media (max-width:768px){.header-container{padding:1rem}.nav{gap:1rem}}.footer{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-top:1px solid #0000000f;margin-top:auto}.footer-container{margin:0 auto;max-width:1200px;padding:2rem;text-align:center}.footer p{color:#7f8c8d;font-size:.9rem}.home{width:100%}.hero{background:linear-gradient(135deg,#3498db1a,#2ecc711a);border-radius:16px;margin-bottom:3rem;padding:4rem 2rem;text-align:center}.hero-content{margin:0 auto;max-width:600px}.hero-title{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,#3498db,#2ecc71);-webkit-background-clip:text;background-clip:text;font-size:3rem;font-weight:800;margin-bottom:1rem}.hero-subtitle{color:#7f8c8d;font-size:1.25rem;margin-bottom:2rem}.cta-button{background:linear-gradient(135deg,#3498db,#2ecc71);border-radius:50px;box-shadow:0 4px 15px #3498db4d;color:#fff;display:inline-block;font-size:1.1rem;font-weight:600;padding:1rem 2.5rem;text-decoration:none;transition:all .3s cubic-bezier(.4,0,.2,1)}.cta-button:hover{box-shadow:0 8px 25px #3498db66;transform:translateY(-2px)}.features{grid-gap:2rem;display:grid;gap:2rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-top:3rem}.feature-card{background:#fff;border-radius:12px;box-shadow:0 4px 6px #0000001a;padding:2rem;text-align:center;transition:all .3s cubic-bezier(.4,0,.2,1)}.feature-card:hover{box-shadow:0 8px 16px #00000026;transform:translateY(-4px)}.feature-icon{font-size:3rem;margin-bottom:1rem}.feature-card h3{color:#2c3e50;font-size:1.25rem;font-weight:700;margin-bottom:.5rem}.feature-card p{color:#7f8c8d;line-height:1.6}@media (max-width:768px){.hero-title{font-size:2rem}.hero-subtitle{font-size:1rem}.features{grid-template-columns:1fr}}.item-card{background:#fff;border-radius:12px;box-shadow:0 4px 6px #0000001a;color:inherit;display:flex;flex-direction:column;height:100%;overflow:hidden;text-decoration:none;transition:all .3s cubic-bezier(.4,0,.2,1)}.item-card:hover{box-shadow:0 12px 24px #00000026;transform:translateY(-8px)}.item-image-wrapper{overflow:hidden;padding-top:66.67%;position:relative;width:100%}.item-image{height:100%;left:0;object-fit:cover;position:absolute;top:0;transition:transform .3s ease;width:100%}.item-card:hover .item-image{transform:scale(1.05)}.item-category{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-radius:20px;box-shadow:0 2px 8px #0000001a;color:#3498db;font-size:.75rem;font-weight:600;padding:6px 12px;position:absolute;right:12px;top:12px}.item-content{display:flex;flex:1 1;flex-direction:column;padding:1.5rem}.item-name{color:#2c3e50;font-size:1.25rem;font-weight:700;margin-bottom:.5rem}.item-description{-webkit-line-clamp:3;-webkit-box-orient:vertical;color:#7f8c8d;display:-webkit-box;flex:1 1;font-size:.9rem;line-height:1.6;margin-bottom:1rem;overflow:hidden}.item-footer{align-items:center;display:flex;justify-content:space-between;margin-top:auto}.item-price{color:#2ecc71;font-size:1.5rem;font-weight:700}.item-rating{align-items:center;color:#f39c12;display:flex;font-weight:600;gap:.25rem}.star{font-size:1.2rem}.items-page{width:100%}.items-header{margin-bottom:3rem;text-align:center}.items-header h1{color:#2c3e50;font-size:2.5rem;font-weight:800;margin-bottom:.5rem}.items-subtitle{color:#7f8c8d;font-size:1.1rem}.category-filter{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin-bottom:2rem}.category-btn{background:#fff;border:2px solid #e0e0e0;border-radius:50px;color:#7f8c8d;cursor:pointer;font-weight:600;padding:.75rem 1.5rem;transition:all .3s ease}.category-btn:hover{border-color:#3498db;box-shadow:0 4px 12px #3498db33;color:#3498db;transform:translateY(-2px)}.category-btn.active{background:linear-gradient(135deg,#3498db,#2ecc71);border-color:#0000;box-shadow:0 4px 15px #3498db4d;color:#fff}.items-grid{grid-gap:2rem;display:grid;gap:2rem;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.empty-state,.error,.loading{padding:4rem 2rem;text-align:center}.empty-state p,.error p,.loading p{color:#7f8c8d;font-size:1.1rem}.retry-button{background:linear-gradient(135deg,#3498db,#2ecc71);border:none;border-radius:50px;color:#fff;cursor:pointer;font-weight:600;margin-top:1rem;padding:.75rem 2rem;transition:all .3s ease}.retry-button:hover{box-shadow:0 4px 15px #3498db4d;transform:translateY(-2px)}@media (max-width:768px){.items-grid{grid-template-columns:1fr}.items-header h1{font-size:2rem}}.item-detail-page{width:100%}.back-button{background:#fff;border:2px solid #e0e0e0;border-radius:50px;color:#7f8c8d;cursor:pointer;font-weight:600;margin-bottom:2rem;padding:.75rem 1.5rem;transition:all .3s ease}.back-button:hover{border-color:#3498db;color:#3498db;transform:translateX(-4px)}.item-detail{grid-gap:3rem;background:#fff;border-radius:16px;box-shadow:0 4px 6px #0000001a;display:grid;gap:3rem;grid-template-columns:1fr 1fr;padding:2rem}.item-detail-image{border-radius:12px;overflow:hidden;position:relative}.item-detail-image img{border-radius:12px;height:500px;object-fit:cover;width:100%}.item-detail-category{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff2;border-radius:20px;box-shadow:0 2px 8px #0000001a;color:#3498db;font-weight:600;padding:8px 16px;position:absolute;right:20px;top:20px}.item-detail-content{display:flex;flex-direction:column;justify-content:center}.item-detail-name{color:#2c3e50;font-size:2.5rem;font-weight:800;margin-bottom:1rem}.item-detail-meta{align-items:center;display:flex;gap:1rem;margin-bottom:1.5rem}.item-detail-rating{align-items:center;color:#f39c12;display:flex;font-size:1.2rem;font-weight:600;gap:.5rem}.star{font-size:1.5rem}.in-stock-badge{background:#d4edda;border-radius:20px;color:#155724;font-size:.85rem;font-weight:600;padding:6px 12px}.item-detail-price{color:#2ecc71;font-size:2.5rem;font-weight:800;margin-bottom:1.5rem}.item-detail-description{color:#7f8c8d;font-size:1.1rem;line-height:1.8;margin-bottom:2rem}.add-to-cart-button{align-self:flex-start;background:linear-gradient(135deg,#3498db,#2ecc71);border:none;border-radius:50px;box-shadow:0 4px 15px #3498db4d;color:#fff;cursor:pointer;font-size:1.1rem;font-weight:700;padding:1.25rem 3rem;transition:all .3s cubic-bezier(.4,0,.2,1)}.add-to-cart-button:hover{box-shadow:0 8px 25px #3498db66;transform:translateY(-2px)}.error,.loading{padding:4rem 2rem;text-align:center}.spinner{animation:spin 1s linear infinite;border:4px solid #f3f3f3;border-radius:50%;border-top-color:#3498db;height:50px;margin:0 auto 1rem;width:50px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@media (max-width:968px){.item-detail{gap:2rem;grid-template-columns:1fr}.item-detail-image img{height:400px}.item-detail-name,.item-detail-price{font-size:2rem}}.app{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1 1;margin:0 auto;max-width:1200px;padding:2rem 1rem;width:100%}