/* Catalogue search UI. No build step, no dependencies — everything is in these three files. */

:root {
  --bg:        #f7f8fa;
  --surface:   #ffffff;
  --raised:    #ffffff;
  --text:      #14161c;
  --muted:     #6b7280;
  --faint:     #9ca3af;
  --border:    #e5e7eb;
  --border-2:  #d5d8de;
  --accent:    #5b53d6;
  --accent-sk: rgba(91, 83, 214, 0.14);
  --ok:        #15803d;
  --warn:      #b45309;
  --shadow:    0 1px 2px rgba(16, 18, 27, .04), 0 8px 24px rgba(16, 18, 27, .06);
  --shadow-lg: 0 2px 4px rgba(16, 18, 27, .06), 0 16px 40px rgba(16, 18, 27, .10);
  --radius:    14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #0e1014;
    --surface:   #15181f;
    --raised:    #1b1f28;
    --text:      #e9ebf1;
    --muted:     #9aa2b1;
    --faint:     #6f7887;
    --border:    #252a34;
    --border-2:  #333a47;
    --accent:    #8b84f0;
    --accent-sk: rgba(139, 132, 240, 0.18);
    --ok:        #4ade80;
    --warn:      #fbbf24;
    --shadow:    0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px rgba(0, 0, 0, .3);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, .45), 0 16px 40px rgba(0, 0, 0, .45);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------------- top bar */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.topbar__inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: 14px 28px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  white-space: nowrap;
}
.brand__mark { font-size: 18px; }
.brand__name { font-weight: 650; letter-spacing: -0.01em; }
.brand__sub  { color: var(--faint); font-size: 13px; }

.searchbar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: 999px;
  padding: 4px 4px 4px 14px;
  transition: border-color .15s, box-shadow .15s;
}
.searchbar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-sk);
}
.searchbar__icon {
  width: 17px; height: 17px; flex: none;
  fill: none; stroke: var(--faint); stroke-width: 2; stroke-linecap: round;
}
.searchbar input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: none;
  color: inherit;
  font: inherit;
  padding: 8px 0;
}
.searchbar input::placeholder { color: var(--faint); }
.searchbar input::-webkit-search-cancel-button { filter: grayscale(1) opacity(.5); }
.searchbar button {
  flex: none;
  border: 0;
  border-radius: 999px;
  padding: 9px 18px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 560;
  cursor: pointer;
  transition: filter .15s;
}
.searchbar button:hover { filter: brightness(1.08); }
.searchbar button:active { filter: brightness(.94); }

/* Querqy rewriter chain — the whole point of this UI, so it sits in the chrome. */
.chain {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.chain__label { color: var(--faint); }
.chain__pill {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 11.5px;
  background: var(--accent-sk);
  color: var(--accent);
  border-radius: 6px;
  padding: 3px 7px;
}
.chain__none {
  font-style: italic;
  color: var(--faint);
}

/* ----------------------------------------------------------------- layout */

.layout {
  max-width: 1360px;
  margin: 0 auto;
  padding: 28px;
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

@media (max-width: 900px) {
  .topbar__inner { grid-template-columns: 1fr; gap: 12px; }
  .layout { grid-template-columns: 1fr; gap: 20px; padding: 20px; }
}

/* ------------------------------------------------------------------ facets */

.rail {
  position: sticky;
  top: 92px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}
@media (max-width: 900px) { .rail { position: static; } }

.facet__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}
.facet__title {
  font-size: 11px;
  font-weight: 650;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--faint);
}
.facet__clear {
  border: 0; background: none; padding: 0;
  font: inherit; font-size: 12px;
  color: var(--accent);
  cursor: pointer;
}
.facet__list { display: flex; flex-direction: column; gap: 1px; }

.facet__row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 8px;
  margin: 0 -8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background .12s;
}
.facet__row:hover { background: var(--surface); }
.facet__row input { accent-color: var(--accent); margin: 0; flex: none; }
.facet__name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13.5px;
}
.facet__row--on .facet__name { font-weight: 560; }
.facet__count {
  flex: none;
  font-size: 11.5px;
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

/* ----------------------------------------------------------------- results */

.statusline {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 22px;
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.statusline b { color: var(--text); font-weight: 600; }
.statusline .dot { color: var(--border-2); }

.banner {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 14px;
}
.banner--error {
  border-color: color-mix(in srgb, var(--warn) 40%, var(--border));
  color: var(--warn);
}
.banner code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 12.5px;
  white-space: pre-wrap;
  word-break: break-word;
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.chips:empty { display: none; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--border-2);
  background: var(--surface);
  border-radius: 999px;
  padding: 4px 6px 4px 12px;
  font: inherit;
  font-size: 12.5px;
  color: inherit;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip__x {
  display: inline-grid;
  place-items: center;
  width: 17px; height: 17px;
  border-radius: 50%;
  background: var(--bg);
  font-size: 12px;
  line-height: 1;
}

.grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(198px, 1fr));
  gap: 18px;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-2);
}

/* ESCI images are Amazon CDN cutouts on white, so the tile stays white in dark mode too. */
.card__tile {
  position: relative;
  aspect-ratio: 1;
  background: #fff;
  display: grid;
  place-items: center;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}
.card__tile img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.card__tile--empty {
  background: linear-gradient(140deg, var(--raised), var(--bg));
  color: var(--faint);
  font-size: 30px;
  font-weight: 600;
}
.card__rank {
  position: absolute;
  top: 8px; left: 8px;
  background: rgba(20, 22, 28, .72);
  color: #fff;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  border-radius: 6px;
  padding: 2px 6px;
}

.card__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 13px 13px;
  flex: 1;
}
.card__brand {
  font-size: 11px;
  font-weight: 620;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.card__title {
  font-size: 13.5px;
  line-height: 1.35;
  margin: 0;
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__meta {
  margin-top: auto;
  padding-top: 8px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}
.card__price { font-weight: 620; font-variant-numeric: tabular-nums; }
.card__price--none { color: var(--faint); font-weight: 400; }
.card__rating {
  font-size: 11.5px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.card__stars { color: var(--warn); letter-spacing: -1px; }
.card__asin {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 10.5px;
  color: var(--faint);
}

/* ------------------------------------------------------------------ pager */

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 28px 0 8px;
  font-size: 13px;
  color: var(--muted);
}
.pager:empty { display: none; }
.pager button {
  border: 1px solid var(--border-2);
  background: var(--surface);
  color: inherit;
  border-radius: 9px;
  padding: 7px 14px;
  font: inherit;
  cursor: pointer;
}
.pager button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.pager button:disabled { opacity: .4; cursor: default; }

body.is-busy .grid { opacity: .5; transition: opacity .15s; }

.banner summary { cursor: pointer; color: var(--text); font-weight: 550; }
.banner summary + code { display: block; margin-top: 10px; }