*{box-sizing:border-box;margin:0;padding:0}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:#333;background-color:#f5f5f5;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;line-height:1.6}.app{flex-direction:column;min-height:100vh;display:flex}.navbar{z-index:100;background-color:#fff;padding:1rem 0;position:sticky;top:0;box-shadow:0 2px 4px #0000001a}.navbar-container{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;max-width:1200px;margin:0 auto;padding:0 2rem;display:flex}.navbar-brand{color:#333;font-size:1.5rem;font-weight:700;text-decoration:none}.navbar-links{align-items:center;gap:1.5rem;display:flex}.navbar-link{color:#333;font-weight:500;text-decoration:none;transition:color .2s}.navbar-link:hover{color:#007bff}.navbar-auth,.navbar-user{align-items:center;gap:1rem;display:flex}.navbar-greeting{color:#666;font-size:.9rem}.navbar-auth-links{gap:.5rem;display:flex}.page{flex:1;padding:2rem 0}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.page-title{color:#333;margin-bottom:2rem;font-size:2rem}.home-hero{text-align:center;max-width:800px;margin:0 auto;padding:4rem 2rem}.home-title{color:#333;margin-bottom:1rem;font-size:3rem}.home-subtitle{color:#666;margin-bottom:2rem;font-size:1.25rem}.product-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:2rem;margin-top:2rem;display:grid}.product-card{background:#fff;border-radius:8px;transition:transform .2s,box-shadow .2s;overflow:hidden;box-shadow:0 2px 8px #0000001a}.product-card:hover{transform:translateY(-4px);box-shadow:0 4px 12px #00000026}.product-card-image{object-fit:cover;width:100%;height:250px}.product-card-content{padding:1.5rem}.product-card-name{color:#333;margin-bottom:.5rem;font-size:1.25rem}.product-card-price{color:#007bff;margin-bottom:1rem;font-size:1.5rem;font-weight:700}.product-card-actions{gap:.5rem;display:flex}.product-detail{background:#fff;border-radius:8px;grid-template-columns:1fr 1fr;gap:3rem;padding:2rem;display:grid;box-shadow:0 2px 8px #0000001a}.product-detail-image img{border-radius:8px;width:100%;height:auto}.product-detail-name{color:#333;margin-bottom:1rem;font-size:2rem}.product-detail-price{color:#007bff;margin-bottom:1.5rem;font-size:2rem;font-weight:700}.product-detail-description{color:#666;margin-bottom:2rem;font-size:1.1rem;line-height:1.8}.auth-container{background:#fff;border-radius:8px;max-width:400px;margin:0 auto;padding:2rem;box-shadow:0 2px 8px #0000001a}.auth-form{margin-top:2rem}.form-group{margin-bottom:1.5rem}.form-label{color:#333;margin-bottom:.5rem;font-weight:500;display:block}.form-input{border:1px solid #ddd;border-radius:4px;width:100%;padding:.75rem;font-size:1rem;transition:border-color .2s}.form-input:focus{border-color:#007bff;outline:none}.form-error{color:#dc3545;margin-top:.25rem;font-size:.875rem;display:block}.error-message{color:#721c24;background-color:#f8d7da;border:1px solid #f5c6cb;border-radius:4px;margin-bottom:1rem;padding:.75rem}.auth-switch{text-align:center;color:#666;margin-top:1.5rem}.auth-link{color:#007bff;cursor:pointer;font-weight:500;text-decoration:none}.auth-link:hover{text-decoration:underline}.checkout-container{grid-template-columns:2fr 1fr;gap:2rem;margin-top:2rem;display:grid}.checkout-items{background:#fff;border-radius:8px;padding:2rem;box-shadow:0 2px 8px #0000001a}.checkout-section-title{color:#333;margin-bottom:1.5rem;font-size:1.5rem}.checkout-item{border-bottom:1px solid #eee;gap:1rem;padding:1.5rem 0;display:flex}.checkout-item:last-child{border-bottom:none}.checkout-item-image{object-fit:cover;border-radius:4px;width:100px;height:100px}.checkout-item-details{flex:1}.checkout-item-name{color:#333;margin-bottom:.5rem;font-size:1.1rem}.checkout-item-price{color:#666;font-size:.9rem}.checkout-item-controls{flex-direction:column;align-items:flex-end;gap:.5rem;display:flex}.quantity-controls{align-items:center;gap:.5rem;display:flex}.quantity-btn{cursor:pointer;background:#fff;border:1px solid #ddd;border-radius:4px;justify-content:center;align-items:center;width:32px;height:32px;font-size:1.2rem;transition:background-color .2s;display:flex}.quantity-btn:hover{background-color:#f5f5f5}.quantity-value{text-align:center;min-width:40px;font-weight:500}.checkout-item-total{color:#333;font-size:1.1rem;font-weight:700}.checkout-summary{background:#fff;border-radius:8px;height:fit-content;padding:2rem;position:sticky;top:100px;box-shadow:0 2px 8px #0000001a}.checkout-total{border-bottom:1px solid #eee;justify-content:space-between;margin-bottom:1rem;padding-bottom:1rem;display:flex}.checkout-total:last-of-type{border-bottom:2px solid #333;margin-bottom:1.5rem;padding-bottom:1.5rem}.checkout-total-label{color:#666;font-size:1.1rem}.checkout-total-value{color:#333;font-size:1.1rem;font-weight:700}.checkout-total-final{color:#007bff;font-size:1.5rem}.order-success{text-align:center;background:#fff;border-radius:8px;max-width:600px;margin:0 auto;padding:4rem 2rem;box-shadow:0 2px 8px #0000001a}.order-success-title{color:#28a745;margin-bottom:1rem;font-size:2.5rem}.order-success-message{color:#666;font-size:1.2rem}.btn{cursor:pointer;text-align:center;border:none;border-radius:4px;padding:.75rem 1.5rem;font-size:1rem;font-weight:500;text-decoration:none;transition:background-color .2s,transform .1s;display:inline-block}.btn:hover{transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{color:#fff;background-color:#007bff}.btn-primary:hover{background-color:#0056b3}.btn-secondary{color:#fff;background-color:#6c757d}.btn-secondary:hover{background-color:#545b62}.btn-large{padding:1rem 2rem;font-size:1.1rem}.btn-small{padding:.5rem 1rem;font-size:.875rem}.btn-block{width:100%}@media (width<=768px){.navbar-container{flex-direction:column;align-items:flex-start}.navbar-links{flex-wrap:wrap;width:100%}.home-title{font-size:2rem}.product-grid,.product-detail,.checkout-container{grid-template-columns:1fr}.checkout-summary{position:static}.checkout-item{flex-direction:column}.checkout-item-controls{align-items:flex-start}}