*{margin:0;padding:0;box-sizing:border-box}.app{padding:20px;background-color:#f5f6f8;min-height:100vh}.app-title{text-align:center;margin-bottom:20px;font-size:2rem;color:#333}.product-card{display:grid;grid-template-columns:1fr;max-width:100%;margin:0;border:none;border-radius:0;box-shadow:0 2px 6px #00000014;overflow:hidden;background-color:#fff}.product-info{padding:15px;display:grid;grid-template-rows:auto auto 1fr auto;gap:12px}.product-image img{width:100%;height:200px;object-fit:cover;display:block}.add-to-cart-btn{align-self:end;padding:12px;background-color:#007bff;color:#fff;border:none;border-radius:6px;cursor:pointer;font-weight:700}.product-price-section{display:flex;align-items:center;gap:10px}.current-price{font-size:1.6em;font-weight:700;color:#c00}.old-price{font-size:.95em;color:#666;text-decoration:line-through}.product-title{font-size:1.3em;margin:0}.product-description{color:#444;margin:0}.offer-badge{margin-left:auto;background-color:#ff9800;color:#fff;padding:4px 8px;border-radius:4px;font-size:.8em;font-weight:700;text-transform:uppercase}.product-card--sold-out{filter:grayscale(100%)}.product-card--sold-out .add-to-cart-btn,.add-to-cart-btn[disabled]{background-color:#bbb;color:#eee;cursor:not-allowed;box-shadow:none}@media(min-width:601px){.product-card{grid-template-columns:250px 1fr;max-width:750px;margin:40px auto;border:1px solid #ddd;border-radius:10px;box-shadow:0 4px 12px #0000001a}.product-info{padding:20px;gap:15px}.product-image img{height:100%}.product-title{font-size:1.5em}.current-price{font-size:1.8em}.old-price{font-size:1em}}