body{font-family:Inter,sans-serif;margin:0;padding:0;background-color:#f3f4f6;color:#1f2937}.container{max-width:1200px;margin:0 auto;padding:2rem}h1{font-size:2rem;font-weight:700;margin-bottom:2rem;text-align:center}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}.product-card{background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;overflow:hidden;transition:transform .2s,box-shadow .2s}.product-card:hover{transform:translateY(-4px);box-shadow:0 4px 12px #00000026}.product-card-link{text-decoration:none;color:inherit;display:block}.product-image{width:100%;height:200px;object-fit:cover;background-color:#f9fafb}.product-image-placeholder{width:100%;height:200px;background:linear-gradient(135deg,#e5e7eb,#d1d5db);display:flex;align-items:center;justify-content:center;color:#9ca3af;font-size:.9rem}.product-info{padding:1rem}.product-card h2{font-size:1.1rem;font-weight:600;margin:0 0 .5rem;color:#1f2937;line-height:1.3}.official-price{font-size:.85rem;color:#6b7280;margin:0 0 .75rem}.max-price{background:linear-gradient(135deg,#059669,#10b981);color:#fff;padding:.75rem;border-radius:6px;margin-bottom:.75rem;display:flex;justify-content:space-between;align-items:center}.max-price .label{font-size:.85rem;font-weight:500}.max-price .value{font-size:1.25rem;font-weight:700}.shop-prices{border-top:1px solid #e5e7eb;padding-top:.75rem}.price-item{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;font-size:.85rem}.shop-name{font-weight:500;color:#6b7280}.price-value{font-weight:600;color:#059669}.price-date{font-size:.75rem;color:#9ca3af}.no-price{font-size:.85rem;color:#9ca3af;text-align:center;margin:0}.back-link{display:inline-block;margin-bottom:1rem;color:#2563eb;text-decoration:none;font-size:.9rem}.back-link:hover{text-decoration:underline}.history-table{background:#fff;padding:1rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;margin-top:1rem}.history-table table{width:100%;border-collapse:collapse}.history-table th,.history-table td{padding:.75rem;text-align:left;border-bottom:1px solid #e5e7eb}.history-table th{font-weight:600;color:#4b5563;background-color:#f9fafb}.form{background:#fff;padding:2rem;border-radius:8px;box-shadow:0 2px 4px #0000001a;max-width:600px;margin:0 auto}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500;color:#374151}.form-group input,.form-group textarea{width:100%;padding:.75rem;border:1px solid #d1d5db;border-radius:4px;font-size:1rem;box-sizing:border-box}.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#2563eb;ring:2px;ring-color:rgba(37,99,235,.2)}.form button,button{background-color:#2563eb;color:#fff;padding:.75rem 1.5rem;border:none;border-radius:4px;font-size:1rem;cursor:pointer;font-weight:500}.form button:hover,button:hover:not(:disabled){background-color:#1d4ed8}.form button:disabled,button:disabled{background-color:#93c5fd;cursor:not-allowed}.button-primary{background-color:#2563eb}.error{color:#dc2626;background-color:#fee2e2;padding:.75rem;border-radius:4px;margin-bottom:1rem}.admin-menu{list-style:none;padding:0}.admin-menu li{margin-bottom:1rem}.admin-menu a{color:#2563eb;text-decoration:none;font-size:1.25rem;font-weight:500}.admin-menu a:hover{text-decoration:underline}.button-link{display:inline-block;background-color:#2563eb;color:#fff;padding:.5rem 1rem;border-radius:4px;text-decoration:none;font-size:.9rem;font-weight:500}.button-link:hover{background-color:#1d4ed8;text-decoration:none}.delete-button{background-color:#ef4444;color:#fff;padding:.4rem .75rem;border:none;border-radius:4px;font-size:.85rem;cursor:pointer;font-weight:500}.delete-button:hover{background-color:#dc2626}@media (max-width: 768px){.product-grid{grid-template-columns:1fr}.container{padding:1rem}}