:root {
  --bg: #ffffff;
  --panel: #ffffff;
  --panel-raised: #eef7ff;
  --line: #b9d7ec;
  --navy: #102a43;
  --blue: #168dd5;
  --blue-deep: #0c5f98;
  --blue-soft: #e3f4ff;
  --yellow: #e4bd35;
  --yellow-deep: #8a6500;
  --yellow-soft: #fff6c9;
  --neon-yellow: #dfff00;
  --neon-yellow-deep: #526000;
  --neon-yellow-soft: #fbffe1;
  --muted: #526f86;
  --danger: #c53e45;
  color-scheme: light;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--navy);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-width: 320px; background: var(--bg); }
button, input, select { font: inherit; }
button { cursor: pointer; }

.topbar {
  position: sticky; top: 0; z-index: 5; display: flex; justify-content: space-between; align-items: center; gap: 10px;
  min-height: 54px; padding: 0 12px; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, .94); backdrop-filter: blur(8px);
}
.brand { color: var(--navy); text-decoration: none; letter-spacing: .08em; font-size: .77rem; font-weight: 850; }
.brand span, .eyebrow { color: var(--blue-deep); }
.top-actions { display: flex; align-items: center; gap: 8px; }
.connection-status { margin: 0; color: var(--muted); font-size: .76rem; }

main { max-width: 860px; margin: auto; padding: 18px 12px 46px; }
.hero { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.eyebrow { margin: 0 0 3px; text-transform: uppercase; font-size: .68rem; font-weight: 850; letter-spacing: .12em; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 12px; font-size: 1.65rem; }
h2 { margin-bottom: 0; font-size: 1rem; }

.icon-button, .filter-row button, .primary, .secondary, .admin-button, .offline-download {
  border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--navy); padding: 8px 11px;
}
.icon-button, .filter-row button, .admin-button, .offline-download { min-height: 44px; }
.icon-button { color: var(--blue-deep); font-size: 1.25rem; }
.admin-button { border-color: var(--blue); color: var(--blue-deep); font-weight: 800; }
.admin-button[aria-expanded="true"] { border-color: var(--navy); color: #fff; background: var(--navy); }
.offline-download { border-color: var(--yellow); color: var(--yellow-deep); background: var(--yellow-soft); font-size: .76rem; font-weight: 850; }
.offline-download:disabled { cursor: wait; opacity: .72; }

.catalog-tabs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; margin: 7px 0 3px; }
.catalog-tile {
  --tile-accent: var(--blue); --tile-soft: var(--blue-soft); --tile-ink: var(--blue-deep);
  display: grid; align-content: center; min-height: 74px; padding: 7px 9px; border: 1px solid color-mix(in srgb, var(--tile-accent) 44%, white);
  border-radius: 12px; background: var(--tile-soft); color: var(--tile-ink); text-align: left; box-shadow: 0 2px 7px rgba(30, 87, 125, .08);
}
.catalog-tile--graded, .catalog-tile--singles, .catalog-tile--sealed-didier { --tile-accent: var(--neon-yellow); --tile-soft: var(--neon-yellow-soft); --tile-ink: var(--neon-yellow-deep); }
.catalog-tile strong { color: inherit; font-size: .88rem; }
.catalog-tile-kicker, .catalog-tile-count { font-size: .62rem; line-height: 1.2; }
.catalog-tile-kicker { color: color-mix(in srgb, var(--tile-ink) 74%, white); }
.catalog-tile-count { margin-top: 2px; color: var(--tile-ink); font-weight: 800; }
.catalog-tile.active { color: #fff; border-color: var(--tile-ink); background: var(--tile-ink); box-shadow: inset 0 -4px 0 var(--tile-accent); }
.catalog-tile.active .catalog-tile-kicker, .catalog-tile.active .catalog-tile-count { color: #fff; }
.catalog-tile--graded.active, .catalog-tile--singles.active, .catalog-tile--sealed-didier.active { color: #273000; border-color: #a9c400; background: var(--neon-yellow); box-shadow: inset 0 -4px 0 #90aa00; }
.catalog-tile--graded.active .catalog-tile-kicker, .catalog-tile--graded.active .catalog-tile-count,
.catalog-tile--singles.active .catalog-tile-kicker, .catalog-tile--singles.active .catalog-tile-count,
.catalog-tile--sealed-didier.active .catalog-tile-kicker, .catalog-tile--sealed-didier.active .catalog-tile-count { color: #273000; }
.series3-breadcrumb { display: flex; align-items: center; gap: 8px; min-height: 44px; margin-top: 4px; color: var(--muted); font-size: .84rem; }
.series3-breadcrumb button { padding: 5px 0; border: 0; color: var(--yellow-deep); background: transparent; font-weight: 800; }

.toolbar { position: sticky; top: 54px; z-index: 4; padding: 9px 0 11px; background: var(--bg); box-shadow: 0 8px 12px -12px #69839a; }
.search input, .admin-panel input, .admin-panel select { width: 100%; min-height: 44px; border: 1px solid var(--line); border-radius: 9px; padding: 10px; color: var(--navy); background: #fff; }
.search { position: relative; display: block; }
.search::before { content: '⌕'; position: absolute; top: 8px; left: 12px; color: var(--blue-deep); font-size: 1.35rem; line-height: 1; pointer-events: none; }
.search input { padding-left: 40px; border-color: #83bddd; font-size: 1rem; box-shadow: 0 1px 3px rgba(22, 141, 213, .07); }
.search input:focus-visible { outline: 3px solid rgba(22, 141, 213, .23); outline-offset: 1px; border-color: var(--blue); }
.quick-filters { margin: 5px 0 10px; padding: 5px 7px 7px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.filter-group { display: flex; align-items: center; gap: 6px; min-width: 0; margin-top: 3px; }
.filter-label { flex: 0 0 46px; margin: 0; color: var(--muted); font-size: .65rem; font-weight: 850; letter-spacing: .04em; text-transform: uppercase; }
.filter-row { display: flex; flex: 1; min-width: 0; gap: 5px; overflow-x: auto; padding: 2px; scrollbar-width: thin; }
.filter-row button { flex: 0 0 auto; min-height: 36px; white-space: nowrap; padding: 4px 8px; font-size: .76rem; }
.filter-row button.active { border-color: var(--blue); color: #fff; background: var(--blue-deep); }

.notice, .conflict-panel, .admin-panel { margin: 12px 0; border: 1px solid var(--line); border-radius: 12px; padding: 12px; background: var(--panel); }
.notice { border-color: var(--blue); color: var(--blue-deep); }
.notice.error, .conflict-panel { border-color: var(--danger); color: #872b30; }
.conflict-panel p:last-of-type { line-height: 1.45; }
.conflict-panel div { display: flex; gap: 8px; flex-wrap: wrap; }

.inventory-summary { display: flex; justify-content: space-between; gap: 12px; margin: 16px 2px 8px; color: var(--muted); font-size: .86rem; }
.inventory-summary strong { color: var(--navy); }
.inventory-list { display: grid; gap: 8px; }
.product-card {
  --card-accent: var(--blue); --card-price: var(--blue-deep); display: grid; grid-template-columns: 64px minmax(0, 1fr) auto; grid-template-areas: "image main side" "image detail side" "image terminated terminated";
  gap: 8px 12px; padding: 12px 12px 12px 9px; border: 1px solid var(--line); border-left: 5px solid var(--card-accent); border-radius: 12px; background: var(--panel); box-shadow: 0 2px 9px rgba(30, 87, 125, .09);
}
.product-card[data-price-tone="sealed"] { --card-accent: var(--blue); --card-price: var(--blue-deep); }
.product-card[data-price-tone="card"], .product-card[data-price-tone="sealed-didier"] { --card-accent: var(--neon-yellow); --card-price: var(--neon-yellow-deep); border-color: #c6da4b; }
.product-card[data-price-tone="card"] .card-price, .product-card[data-price-tone="sealed-didier"] .card-price { display: inline-block; padding: 4px 8px; border: 1px solid #b7cf00; border-radius: 999px; color: #273000; background: var(--neon-yellow); font-weight: 900; }
.product-image { grid-area: image; width: 64px; height: 82px; object-fit: contain; align-self: start; border: 1px solid var(--line); border-radius: 8px; background: #f1f8fd; }
.card-main { grid-area: main; min-width: 0; }
.card-meta, .price-label { margin: 0; color: var(--muted); font-size: .72rem; }
.card-title { margin: 0 0 5px; font-size: 1rem; line-height: 1.28; overflow-wrap: anywhere; }
.card-meta { line-height: 1.35; overflow-wrap: anywhere; }
.card-side { grid-area: side; display: grid; align-content: start; justify-items: end; gap: 7px; min-width: 124px; }
.card-price { color: var(--card-price); font-size: 1.1rem; line-height: 1.1; white-space: nowrap; }
.price-label { font-size: .66rem; font-weight: 850; letter-spacing: .04em; text-transform: uppercase; }
.price-estimate { padding: 2px 7px; border: 1px solid #d8bd51; border-radius: 999px; color: var(--yellow-deep); background: var(--yellow-soft); font-size: .68rem; font-weight: 850; text-transform: uppercase; letter-spacing: .04em; }
.qty-label, .price-editor { color: var(--muted); font-size: .73rem; font-weight: 700; }
.quantity-readout { margin: 0; color: var(--muted); font-size: .73rem; font-weight: 700; }
.quantity-value { display: block; margin-top: 2px; color: var(--navy); font-size: .9rem; }
.qty-label { display: none; }
.product-card.can-edit-quantity .quantity-readout { display: none; }
.product-card.can-edit-quantity .qty-label { display: block; }
.quantity-select, .price-input { min-height: 44px; max-width: 124px; margin-left: 3px; padding: 3px 6px; color: var(--navy); border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.price-input { width: 100px; }
.confirm-estimate { min-height: 44px; padding: 5px 8px; color: #594200; border: 1px solid #d8bd51; border-radius: 8px; background: var(--yellow-soft); font-size: .73rem; font-weight: 800; }
.terminated-label { grid-area: terminated; display: flex; align-items: center; min-height: 44px; padding: 8px 0 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; font-weight: 700; }
.product-open { grid-area: detail; justify-self: start; min-height: 40px; padding: 5px 0; border: 0; color: var(--blue-deep); background: transparent; font-size: .78rem; font-weight: 850; text-decoration: underline; text-underline-offset: 3px; }
.product-open:focus-visible, .series3-open:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid rgba(22, 141, 213, .38); outline-offset: 2px; }
.terminated-label input { width: 20px; height: 20px; margin-right: 8px; accent-color: var(--blue); }
.product-card.is-terminated { opacity: .58; }
.product-card.is-series3 { grid-template-areas: "image main side" "image detail side" "image open open" "terminated terminated terminated"; border-color: #dbc766; border-left-color: var(--card-accent); }
.series3-open { grid-area: open; justify-self: start; min-height: 44px; padding: 6px 9px; border: 1px solid #d8bd51; border-radius: 8px; color: #594200; background: var(--yellow-soft); font-size: .78rem; font-weight: 800; }
.series3-detail-heading { margin: 17px 2px 8px; }
.series3-detail-heading p { margin: 4px 0 0; color: var(--muted); font-size: .84rem; line-height: 1.4; }
.series3-gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(142px, 1fr)); gap: 8px; margin-top: 12px; }
.series3-card { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 10px; min-height: 112px; padding: 8px; border: 1px solid #dbc766; border-left: 5px solid var(--yellow); border-radius: 10px; background: var(--panel); }
.series3-card img { width: 72px; height: 96px; object-fit: contain; border: 1px solid var(--line); border-radius: 6px; background: #f1f8fd; }
.series3-card h3 { margin: 0; font-size: .78rem; line-height: 1.25; overflow-wrap: anywhere; }
.series3-grade { margin: 4px 0 0; color: var(--yellow-deep); font-size: .72rem; font-weight: 850; }
.series3-variant { margin: 4px 0; color: #725f20; font-size: .69rem; line-height: 1.25; }
.series3-card a { align-self: end; color: var(--blue-deep); font-size: .7rem; }
.show-more { display: block; width: 100%; min-height: 44px; margin: 12px 0; padding: 10px; color: #fff; border: 1px solid var(--blue-deep); border-radius: 10px; background: var(--blue-deep); font-weight: 800; }
.empty-state { padding: 28px 8px; color: var(--muted); text-align: center; }

.product-detail { width: min(560px, calc(100vw - 24px)); max-height: min(680px, calc(100dvh - 24px)); padding: 18px; border: 1px solid var(--blue); border-radius: 16px; color: var(--navy); background: var(--panel); box-shadow: 0 20px 60px rgba(16, 42, 67, .24); }
.product-detail::backdrop { background: rgba(16, 42, 67, .36); }
.product-detail[open] { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 16px; }
.detail-close { position: absolute; top: 7px; right: 9px; width: 40px; min-height: 40px; border: 0; color: var(--blue-deep); background: transparent; font-size: 1.65rem; }
.detail-image { width: 112px; height: 150px; object-fit: contain; border: 1px solid var(--line); border-radius: 10px; background: #f1f8fd; }
.product-detail h2 { margin: 5px 28px 12px 0; font-size: 1.15rem; overflow-wrap: anywhere; }
.detail-row { margin: 6px 0; color: var(--muted); font-size: .85rem; }
.detail-row strong { color: var(--navy); }
.detail-price-label { margin: 16px 0 2px; color: var(--muted); font-size: .69rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.detail-price { color: var(--blue-deep); font-size: 1.35rem; }

.admin-panel-heading { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin-bottom: 12px; }
.admin-login, .admin-add { display: grid; gap: 9px; }
.admin-login { max-width: 420px; }
.admin-help { margin-bottom: 0; color: var(--muted); font-size: .82rem; }
.admin-login label, .admin-add label { display: grid; gap: 4px; font-size: .8rem; color: var(--muted); }
.admin-add { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
.admin-add .check { display: flex; align-items: center; min-height: 44px; }
.admin-add .primary { align-self: end; min-height: 44px; }
.primary { background: var(--blue-deep); color: #fff; font-weight: 850; border-color: var(--blue-deep); }
.secondary { display: inline-block; text-decoration: none; color: var(--blue-deep); background: var(--blue-soft); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }

@media (max-width: 540px) {
  .topbar { gap: 6px; padding-left: 10px; padding-right: 10px; }
  .brand { font-size: .71rem; letter-spacing: .06em; }
  .connection-status { max-width: 92px; text-align: right; }
  .top-actions { gap: 5px; }
  .admin-button, .offline-download { padding-left: 8px; padding-right: 8px; }
  .toolbar { padding-bottom: 9px; }
  .filter-row { flex-wrap: wrap; overflow: visible; gap: 3px; }
  .filter-row button { min-height: 36px; padding: 3px 5px; font-size: .69rem; }
  .inventory-summary { align-items: flex-start; flex-direction: column; gap: 2px; }
  .catalog-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; margin-left: -2px; margin-right: -2px; }
  .catalog-tile--all { grid-column: 1 / -1; min-height: 55px; }
  .catalog-tile { min-width: 0; min-height: 66px; padding: 6px 9px; }
  .catalog-tile strong { font-size: .88rem; }
  .catalog-tile-kicker { display: none; }
  .product-card { grid-template-columns: 58px minmax(0, 1fr); grid-template-areas: "image main" "image side" "detail detail" "terminated terminated"; }
  .product-card.is-series3 { grid-template-areas: "image main" "image side" "detail detail" "open open" "terminated terminated"; }
  .series3-gallery { grid-template-columns: 1fr; }
  .product-image { width: 58px; height: 76px; }
  .card-side { justify-items: stretch; grid-template-columns: 1fr; min-width: 0; padding-top: 2px; }
  .card-price { white-space: normal; }
  .price-editor, .product-card.can-edit-quantity .qty-label { display: grid; grid-template-columns: minmax(0, 1fr) minmax(116px, 1fr); align-items: center; gap: 8px; }
  .quantity-select, .price-input { width: 100%; max-width: none; margin-left: 0; }
  .admin-panel-heading { align-items: flex-start; flex-direction: column; }
  .admin-panel-heading .secondary { width: 100%; text-align: center; }
  .product-detail[open] { grid-template-columns: 86px minmax(0, 1fr); gap: 12px; }
  .detail-image { width: 86px; height: 118px; }
}
@media (min-width: 620px) { main { padding-left: 24px; padding-right: 24px; } .product-card { padding: 14px; } }
/* Native disclosure keeps the initial mobile catalogue compact. */
.quick-filters { display: block; }
.quick-filters summary { display: flex; align-items: center; gap: 12px; min-height: 48px; cursor: pointer; list-style: none; }
.quick-filters summary::-webkit-details-marker { display: none; }
.quick-filters summary::after { content: '+'; margin-left: auto; font-size: 22px; color: #365c8b; }
.quick-filters[open] summary::after { content: '−'; }
.quick-filters summary span { font-size: 11px; color: #52657b; }
.quick-filters[open] summary { margin-bottom: 12px; border-bottom: 1px solid #d5dfe9; padding-bottom: 8px; }
.quick-filters .filter-group + .filter-group { margin-top: 8px; }