/* Shared purchase and catalogue UI for the existing publisher site. */
[hidden] { display: none !important; }
html { scroll-padding-top: 9rem; }
.site-nav ul { gap: 7px 18px; }
.site-nav a.nav-purchase { color: var(--accent); font-weight: 700; }
.shop-button, .catalog-pagination button, .filter-reset {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 10px 18px; border: 1px solid var(--accent);
  border-radius: 4px; font: inherit; font-size: .86rem; line-height: 1.5;
  text-decoration: none; cursor: pointer; background: var(--accent); color: var(--bg);
}
.shop-button:hover { filter: brightness(.92); }
.shop-button.secondary, .filter-reset, .catalog-pagination button {
  color: var(--accent); background: var(--surface);
}
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--accent); outline-offset: 4px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.home-purchase { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.home-purchase .eyebrow { color: var(--accent); font: .65rem Arial,sans-serif; letter-spacing: .2em; }
.home-purchase .shop-button { flex-shrink: 0; }
.body-inner .home-purchase h2 { padding: 0; border: 0; margin-bottom: 10px; }
.shop-notice { margin-top: 28px; padding: 20px 24px; border: 1px solid var(--rule); border-radius: 4px; background: var(--surface); }
.shop-notice p { margin: 6px 0; color: var(--ink-soft); font-size: .9rem; }
.shop-notice a { font-size: .85rem; }
.catalog-filters { display: grid; grid-template-columns: 2fr 1.4fr 1fr; gap: 14px; align-items: end; padding: 20px; background: var(--accent-soft); border-radius: 5px; }
.catalog-filters label { display: grid; gap: 6px; font-size: .78rem; color: var(--ink-soft); }
.catalog-filters .search-field { grid-column: span 2; }
.catalog-filters input, .catalog-filters select { width: 100%; min-height: 44px; border: 1px solid var(--rule); border-radius: 4px; padding: 9px 10px; font: inherit; font-size: 16px; color: var(--ink); background: var(--surface); }
.filter-reset { justify-self: start; border-color: var(--rule); }
.result-count { margin: 20px 0 !important; font-size: .84rem; color: var(--ink-soft); }
.catalog-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.catalog-card { padding: 24px; border: 1px solid var(--rule); background: var(--surface); border-radius: 5px; min-width: 0; display: flex; flex-direction: column; }
.catalog-card-head { display: flex; align-items: flex-start; gap: 16px; }
.catalog-card-head > div { min-width: 0; }
.catalog-card .card-label { font-size: .65rem; margin-bottom: 12px; letter-spacing: .05em; }
.body-inner .catalog-card h3 { margin: 0 0 12px; font-size: 1.13rem; line-height: 1.7; overflow-wrap: anywhere; }
.catalog-card h3 a { color: var(--ink); text-decoration: none; }
.catalog-card h3 a:hover { text-decoration: underline; }
.catalog-cover { width: 75px; height: 107px; object-fit: contain; object-position: top; flex-shrink: 0; }
.catalog-state { font: .73rem/1.5 sans-serif; color: var(--ink-soft); display: inline-block; padding: 3px 8px; background: var(--bg); border-radius: 3px; }
.catalog-state.available { color: var(--accent); background: var(--accent-soft); }
.catalog-description { font-size: .88rem; color: var(--ink-soft); margin: 18px 0 !important; }
.catalog-actions { margin-top: auto; display: flex; flex-wrap: wrap; gap: 10px; }
.catalog-actions .offer-row { width: 100%; }
.offer-row { display: flex; flex-wrap: wrap; gap: 12px 18px; justify-content: space-between; align-items: center; padding: 17px 0; border-top: 1px solid var(--rule); }
.offer-row > div:first-child { flex: 1 1 15rem; min-width: 0; }
.format-label { display: block; font: .71rem/1.5 sans-serif; color: var(--accent); margin-bottom: 5px; }
.offer-row strong { display: block; font-size: .88rem; font-weight: 600; }
.offer-note { font-size: .73rem; line-height: 1.7; color: var(--ink-soft); margin: 5px 0 0 !important; }
.offer-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.catalog-card .offer-actions { width: 100%; }
.catalog-card .offer-actions .shop-button { width: 100%; }
.catalog-pagination { display: flex; align-items: center; justify-content: center; gap: 24px; margin-top: 30px; font-size: .86rem; }
.catalog-pagination button:disabled { opacity: .45; cursor: default; }
.section-link { margin-top: 24px !important; text-align: right; }
.series-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 16px; }
.series-grid a { display: block; padding: 25px 20px; border: 1px solid var(--rule); border-radius: 4px; background: var(--surface); text-decoration: none; }
.series-grid span { display: block; font: .6rem/1.5 Arial,sans-serif; letter-spacing: .12em; margin-bottom: 16px; color: var(--ink-faint); }
.series-grid strong { font-size: 1.05rem; color: var(--ink); }
.series-grid p { font-size: .78rem; color: var(--ink-soft); margin: 12px 0 0; }
.buy-steps { list-style: decimal-leading-zero; padding-left: 2em; display: grid; gap: 18px; }
.buy-steps li { padding-left: 8px; }
.buy-steps strong, .buy-steps span { display: block; }
.buy-steps span { color: var(--ink-soft); font-size: .86rem; }
.format-guide { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; margin: 30px 0; }
.format-guide article { padding: 20px; background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; }
.body-inner .format-guide h3 { margin: 0 0 10px; }
.format-guide p { font-size: .86rem; color: var(--ink-soft); }
.purchase-guide details { padding: 18px 0; border-bottom: 1px solid var(--rule); }
.purchase-guide summary { cursor: pointer; font-size: .93rem; }
.purchase-guide details p { margin: 14px 0 0; font-size: .88rem; color: var(--ink-soft); }
.book-introduction { display: flex; gap: 32px; align-items: flex-start; }
.detail-book-cover { width: 180px; height: auto; object-fit: contain; }
.purchase-section .meta { margin-top: 20px; }
@media(min-width:60rem) { .featured-grid { grid-template-columns: repeat(3,minmax(0,1fr)); } .featured-grid .catalog-card { padding: 20px; } .featured-grid .catalog-card-head { display: block; } .featured-grid .catalog-cover { float: right; margin: 0 0 10px 10px; } }
@media(max-width:42rem) {
  .site-head { position: static; } html { scroll-padding-top: 20px; }
  .site-nav ul { gap: 8px 18px; } .site-nav a { font-size: .8rem; }
  .catalog-grid, .series-grid, .format-guide { grid-template-columns: 1fr; }
  .catalog-filters { grid-template-columns: 1fr 1fr; padding: 16px; }
  .catalog-filters .search-field { grid-column: 1/-1; }
  .home-purchase { align-items: flex-start; flex-direction: column; }
  .catalog-card { padding: 20px; }
  .book-introduction { flex-direction: column; }
  .detail-book-cover { width: 140px; }
}
@media(prefers-reduced-motion:no-preference) { .shop-button { transition: filter .15s ease; } }

.commerce-panel { padding:clamp(1rem,4vw,2rem); border:1px solid #d9d0c2; background:#fff; }
.commerce-panel [role=status] { padding:1rem; background:#f2ebdf; }
.checkout-total { font-size:1.35rem; font-weight:700; }
.checkout-form { display:grid; gap:1.4rem; margin-top:1.5rem; }
.checkout-form label { display:flex; align-items:flex-start; gap:.7rem; }
.checkout-form input { width:1.2rem; height:1.2rem; flex-shrink:0; }
.checkout-form button { justify-self:start; }
.seller-details { display:grid; grid-template-columns:minmax(7rem,1fr) 3fr; gap:1rem; }
.seller-details dt { font-weight:700; }
.seller-details dd { margin:0; white-space:pre-line; overflow-wrap:anywhere; }
@media(max-width:600px){ .seller-details { grid-template-columns:1fr; gap:.5rem; } .seller-details dd { margin-bottom:1rem; } }