.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.category-bar { display: grid; grid-template-columns: minmax(190px, 300px) 1fr; align-items: center; gap: 12px 24px; }
.category-bar .field { margin-bottom: 12px; }
.product-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 24px; }
.product-row { border: 1px solid var(--border); border-radius: 7px; padding: 18px; background: #f8fafc; }
.product-row legend { padding: 0 8px; font-size: 18px; }
.product-row .field { margin-bottom: 14px; }
.product-row input, .product-row select { width: 100%; min-width: 0; }
.product-row .remove-product { width: 100%; font-size: 14px; }
[aria-invalid="true"] { border: 2px solid #ae2439; }
.edit-actions { margin-bottom: 10px; }
.compare-actions { border-top: 1px solid var(--border); padding-top: 20px; }
.error ul { padding-left: 22px; }
.error a { color: inherit; }
.result { margin-top: 30px; border-top: 2px solid var(--border); padding-top: 26px; }
.result-list { padding: 0; margin: 20px 0; list-style: none; display: grid; gap: 14px; }
.result-item { padding: 20px; border: 1px solid var(--border); border-radius: 7px; min-width: 0; overflow-wrap: anywhere; }
.result-item.cheapest { border: 2px solid var(--accent); background: #f5f8fe; }
.result-top { display: flex; gap: 10px 20px; justify-content: space-between; align-items: baseline; flex-wrap: wrap; }
.result-top h3 { margin: 0; }
.rank { display: inline-block; font-size: 14px; background: #e8f0fd; color: #174f9f; padding: 2px 8px; border-radius: 4px; margin-bottom: 8px; }
.unit-price { font-size: clamp(23px, 3.5vw, 30px); font-weight: 750; margin-bottom: 6px; }
.unit-price span { font-size: 15px; font-weight: 500; }
.difference { margin: 6px 0 12px; }
.calculation { font-size: 14px; color: var(--muted); margin-bottom: 4px; }
.formula-guide { background: #e8f0fd; padding: 14px; overflow-wrap: anywhere; }
#status:not(:empty) { margin-top: 14px; }
@media (min-width: 1040px) {
  .product-grid:has(.product-row:nth-child(3)) { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .category-bar, .product-grid { grid-template-columns: minmax(0, 1fr); }
  .product-row { padding: 14px; }
  .result-item { padding: 14px; }
  .edit-actions #product-count { flex-basis: 100%; }
}