/* Discovery: search, subjects, related research, autocomplete.
   Only feature-specific layout lives here; shared components (.btn, .card, .tag,
   .chip, .result-item, .pagination, .side-card…) come from style.css. Colours are
   the site's CSS variables, so dark mode follows the global theme. */

.disc-sr {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Search bar ---------- */
.disc-bar { position: relative; display: flex; gap: 8px; align-items: stretch; max-width: 760px; }
.disc-bar-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.disc-bar-input {
  flex: 1 1 auto; min-width: 0; height: 48px; padding: 0 14px 0 42px;
  font: inherit; font-size: 1.02rem; color: var(--ink); background: var(--card);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.disc-bar-input:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }
.disc-bar-input::-webkit-search-cancel-button { cursor: pointer; }
.disc-bar-btn { flex: 0 0 auto; min-width: 96px; }
.disc-bar-links { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 18px; margin: 10px 0 0; font-size: .88rem; }
.disc-adv > summary { display: inline-block; cursor: pointer; color: var(--primary); font-weight: 500; list-style: none; }
.disc-adv > summary::-webkit-details-marker { display: none; }
.disc-adv > summary::after { content: " ▾"; font-size: .8em; }
.disc-adv[open] > summary::after { content: " ▴"; }
.disc-adv > summary:focus-visible, .disc-tips > summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.disc-adv[open] { flex-basis: 100%; }
.disc-adv[open] .disc-adv-form {
  margin: 12px 0 4px; padding: 18px 20px; max-width: 760px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}

/* ---------- Advanced form ---------- */
.disc-adv-form { gap: 14px; }
.disc-adv-group { border: 0; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.disc-adv-group legend { font-weight: 700; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin-bottom: 4px; }
.disc-adv-row { display: grid; grid-template-columns: 230px minmax(0, 1fr); align-items: center; gap: 6px 14px; }
.disc-adv-row > label, .field.disc-adv-row > .disc-adv-label { font-weight: 400; font-size: .92rem; color: var(--ink-soft); }
.disc-adv-row input[type="text"], .disc-adv-row select {
  width: 100%; padding: .5em .75em; font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--border); border-radius: 8px;
}
.disc-adv-row input:focus, .disc-adv-row select:focus { outline: 2px solid var(--primary); outline-offset: 1px; }
.disc-adv-radios { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: .92rem; }
.disc-adv-radios label { display: inline-flex; gap: 6px; align-items: center; cursor: pointer; font-weight: 400; }
.field .disc-adv-radios input[type="radio"] { width: auto; padding: 0; margin: 0; accent-color: var(--primary); }
.disc-adv-years { display: flex; align-items: center; gap: 8px; font-weight: 400; }
.disc-adv-years input { max-width: 7.5em; }

/* ---------- Landing ---------- */
.disc-landing { max-width: 760px; }
.disc-landing h1 { margin-bottom: .3em; }
.disc-landing-section { margin-top: 2rem; }
.disc-landing-section h2 { font-size: 1.1rem; margin: 0 0 .7em; }

/* ---------- Results layout ---------- */
.disc-dym { margin: 1.2rem 0 0; font-size: 1.02rem; color: var(--danger); }
.disc-dym a { font-style: italic; }
.disc-note { margin-top: .5rem; }
.disc-layout {
  display: grid; grid-template-columns: 210px minmax(0, 1fr); grid-template-areas: "facets main";
  gap: 32px; align-items: start; margin-top: 1.4rem;
}
.disc-main { grid-area: main; min-width: 0; }
.disc-facets { grid-area: facets; position: sticky; top: 80px; max-height: calc(100vh - 96px); overflow: auto; padding-right: 4px; }
.disc-layout-subject { grid-template-columns: minmax(0, 1fr) 280px; grid-template-areas: "main side"; }
/* No facets to show (zero results, no filters): the message takes the full width. */
.disc-layout-solo { grid-template-columns: minmax(0, 1fr); grid-template-areas: "main"; max-width: 860px; }
.disc-side { grid-area: side; min-width: 0; }

.disc-head { margin-bottom: 14px; }
.disc-count-h { font-family: var(--font-body); font-size: 1rem; font-weight: 600; color: var(--ink-soft); margin: 0 0 .6em; }
.disc-related-for { margin: -.3em 0 .8em; }
.disc-active { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 12px; }
.disc-chip {
  display: inline-flex; align-items: center; gap: 6px; padding: .2em .75em; font-size: .84rem;
  border: 1px solid var(--border); border-radius: 999px; background: var(--card); color: var(--ink);
}
.disc-chip:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.disc-chip span[aria-hidden] { color: var(--muted); font-size: 1.05em; line-height: 1; }
.disc-clear { font-size: .84rem; }
.disc-toolbar { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; font-size: .88rem; color: var(--ink-soft); }
.disc-toolbar form { display: inline-flex; align-items: center; gap: 8px; }
.disc-toolbar select {
  padding: .35em .6em; font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--border); border-radius: 8px;
}
.disc-toolbar select:focus { outline: 2px solid var(--primary); outline-offset: 1px; }
.disc-refine-link { display: none; }

/* ---------- One result ---------- */
.disc-results { gap: 12px; }
.disc-result { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 18px; align-items: start; }
.disc-result-main { min-width: 0; }
.disc-result-kicker { margin: 0 0 .2em; line-height: 1; }
.disc-result-kicker .type-badge { font-size: .66rem; }
.disc-result-title { font-family: var(--font-body); font-size: 1.1rem; font-weight: 500; line-height: 1.35; margin: .35em 0 .2em; }
.disc-result-title a { color: var(--primary); overflow-wrap: anywhere; }
.disc-byline { margin: 0; font-size: .87rem; color: var(--accent); overflow-wrap: anywhere; }
.disc-byline a { color: inherit; }
.disc-source { font-style: italic; }
.disc-snippet { margin: .35em 0 0; font-size: .91rem; color: var(--ink-soft); line-height: 1.55; overflow-wrap: anywhere; }
.disc-result mark, .disc-related mark { background: transparent; color: inherit; font-weight: 700; }
.disc-snippet mark { background: rgba(232, 161, 60, .22); background: color-mix(in srgb, var(--gold) 26%, transparent); border-radius: 2px; padding: 0 .08em; }
.disc-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; margin-top: .55em; font-size: .83rem; }
.disc-act { color: var(--primary); font-weight: 500; }
.disc-stat { color: var(--muted); }
.disc-versions { color: var(--muted); }
.disc-pick { display: inline-flex; align-items: center; gap: 5px; color: var(--ink-soft); cursor: pointer; }
.disc-pick input { width: 15px; height: 15px; accent-color: var(--primary); }
.disc-pdf {
  display: flex; flex-direction: column; align-items: center; gap: 2px; min-width: 64px; padding: 8px 10px;
  border: 1px solid var(--border); border-radius: 8px; background: var(--card); color: var(--ink-soft); font-size: .74rem;
}
.disc-pdf:hover { border-color: var(--primary); text-decoration: none; }
.disc-pdf-tag { font-weight: 800; letter-spacing: .04em; color: var(--danger); font-size: .82rem; }
.disc-pdf-size { color: var(--muted); white-space: nowrap; }
.Z3988 { display: none; }

/* ---------- Facets ---------- */
.disc-facet { padding: 0 0 14px; margin: 0 0 14px; border-bottom: 1px solid var(--border); }
.disc-facet:last-child { border-bottom: 0; }
.disc-facet-title {
  font-family: var(--font-body); font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .07em; color: var(--muted); margin: 0 0 6px;
}
.disc-facet-list { list-style: none; margin: 0; padding: 0; }
.disc-facet-link {
  display: flex; align-items: baseline; gap: 8px; padding: 3px 8px; margin: 0 -8px;
  border-radius: 6px; font-size: .88rem; color: var(--ink-soft); border-left: 3px solid transparent;
}
.disc-facet-link:hover { background: var(--bg); color: var(--primary); text-decoration: none; }
.disc-facet-link[aria-current="true"] { color: var(--primary); font-weight: 700; border-left-color: var(--primary); }
.disc-facet-label { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }
.disc-count { font-size: .78rem; color: var(--muted); font-variant-numeric: tabular-nums; font-weight: 500; }
.disc-facet-link .disc-count { flex: 0 0 auto; }
.disc-facet-years { margin-top: 6px; }
.disc-range { display: flex; align-items: center; gap: 6px; margin: 8px 0 4px; flex-wrap: wrap; }
.disc-range label { display: contents; }
.disc-range input {
  width: 4.6em; padding: .3em .45em; font: inherit; font-size: .85rem; color: var(--ink);
  background: var(--card); border: 1px solid var(--border); border-radius: 6px;
}
.disc-range input:focus { outline: 2px solid var(--primary); outline-offset: 1px; }

/* ---------- Pagination ---------- */
.disc-pages { flex-wrap: wrap; gap: 6px; }
.disc-pages a, .disc-page-current {
  display: inline-flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; padding: 0 10px;
  border-radius: 8px; font-weight: 600;
}
.disc-pages a:hover { background: var(--card); text-decoration: none; box-shadow: inset 0 0 0 1px var(--border); }
.disc-page-current { background: var(--primary); color: var(--card); }
.disc-gap { color: var(--muted); padding: 0 4px; }

/* ---------- Zero results ---------- */
.disc-zero { text-align: left; padding: 1.6rem 1.8rem; }
.disc-zero .disc-zero-lead { color: var(--ink); font-weight: 600; margin: 0 0 .6em; max-width: none; }
.disc-zero-tips { margin: 0 0 1rem 1.2em; color: var(--ink-soft); }
.disc-zero-tips li { margin: .25em 0; }
.disc-zero-subjects { margin-top: .4rem; }

/* ---------- Tips ---------- */
.disc-tips { margin-top: 2.4rem; max-width: 820px; }
.disc-tips > summary { cursor: pointer; list-style: none; display: inline-flex; align-items: center; gap: 8px; }
.disc-tips > summary::-webkit-details-marker { display: none; }
.disc-tips > summary::before { content: "▸"; color: var(--muted); transition: transform .15s; }
.disc-tips[open] > summary::before { transform: rotate(90deg); }
.disc-tips-title { display: inline; font-size: 1.1rem; margin: 0; }
.disc-tips .table-wrap { margin-top: 12px; }
.disc-tips-table code { white-space: pre-wrap; overflow-wrap: anywhere; }
.disc-tips-foot { margin-top: 10px; }
kbd {
  display: inline-block; padding: 0 .4em; font: inherit; font-size: .85em; line-height: 1.5;
  border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 4px; background: var(--card);
}

/* ---------- Cite dialog ---------- */
.disc-cite { margin: auto; width: min(640px, calc(100vw - 32px)); max-height: calc(100vh - 48px); padding: 20px 22px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); color: var(--ink); box-shadow: var(--shadow); }
.disc-cite::backdrop { background: rgba(10, 18, 32, .5); }
.disc-cite-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.disc-cite-head h2 { margin: 0; font-size: 1.25rem; }
.disc-cite-close { font-size: 1.3rem; line-height: 1; padding: .15em .55em; }
.disc-cite-for { margin: .3em 0 .8em; }
.disc-cite-label { font-family: var(--font-body); font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 14px 0 6px; }
.disc-cite-bibtex {
  margin: 0 0 8px; padding: 12px 14px; max-height: 220px; overflow: auto; font-size: .8rem; line-height: 1.5;
  background: var(--bg); color: var(--ink); border: 1px solid var(--border); border-radius: 8px; white-space: pre-wrap; overflow-wrap: anywhere;
}
.disc-cite-dl { margin-top: 14px; font-size: .9rem; }

/* ---------- Autocomplete (ARIA combobox) ---------- */
.disc-ac {
  position: fixed; z-index: 1000; margin: 0; padding: 6px; list-style: none; overflow: auto; max-height: min(60vh, 420px);
  background: var(--card); color: var(--ink); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(10, 18, 32, .18), var(--shadow);
}
.disc-ac[hidden] { display: none; }
.disc-ac-opt { display: flex; align-items: baseline; gap: 10px; padding: 8px 10px; border-radius: 7px; cursor: pointer; font-size: .92rem; line-height: 1.35; }
.disc-ac-opt[aria-selected="true"], .disc-ac-opt:hover { background: var(--bg); box-shadow: inset 3px 0 0 var(--primary); }
.disc-ac-label { flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; color: var(--ink); }
.disc-ac-label b { font-weight: 700; }
.disc-ac-kind { flex: 0 0 auto; font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; white-space: nowrap; }
.disc-ac-opt[data-kind="query"] .disc-ac-label::before { content: "⌕ "; color: var(--muted); }

/* ---------- Subjects index ---------- */
.disc-subjects-bar { min-height: 44px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; margin: 0 0 1rem; }
.disc-subject-filter { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.disc-subject-filter label { font-weight: 600; font-size: .92rem; }
.disc-subject-filter input {
  width: min(280px, 60vw); padding: .5em .8em; font: inherit; color: var(--ink); background: var(--card);
  border: 1px solid var(--border); border-radius: 8px;
}
.disc-subject-filter input:focus { outline: 2px solid var(--primary); outline-offset: 1px; }
.disc-subjects-total { margin: 0; }
.disc-az { display: flex; flex-wrap: wrap; gap: 4px; margin: 0 0 1.4rem; }
.disc-az a, .disc-az span {
  display: inline-flex; align-items: center; justify-content: center; min-width: 32px; height: 32px; padding: 0 6px;
  border-radius: 6px; font-weight: 700; font-size: .88rem;
}
.disc-az a { background: var(--card); border: 1px solid var(--border); }
.disc-az a:hover { border-color: var(--primary); text-decoration: none; }
.disc-az span { color: var(--muted); opacity: .45; }
.disc-subject-group { margin-bottom: 1.6rem; scroll-margin-top: 120px; }
.disc-letter { font-size: 1.5rem; margin: 0 0 .5em; padding-bottom: .2em; border-bottom: 1px solid var(--border); scroll-margin-top: 120px; }
.disc-subject-list { list-style: none; margin: 0; padding: 0; columns: 3 220px; column-gap: 28px; }
.disc-subject-list li { break-inside: avoid; display: flex; align-items: baseline; gap: 8px; padding: 3px 0; }
.disc-subject-list a { min-width: 0; overflow-wrap: anywhere; }

/* ---------- Subject page ---------- */
.disc-subject-head { max-width: 820px; }
.disc-eyebrow { font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin: 0 0 .3em; }
.disc-subject-head h1 { margin-bottom: .35em; overflow-wrap: anywhere; }
.disc-within { margin-top: .6rem; }
.disc-side-title { font-family: var(--font-display); font-size: 1rem; margin: 0 0 .7em; }
.disc-side-list { list-style: none; margin: 0; padding: 0; }
.disc-side-list li { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding: 3px 0; font-size: .92rem; }
.disc-side-list a { min-width: 0; overflow-wrap: anywhere; }
.disc-side-links { margin: .8em 0 0; font-size: .88rem; }
.disc-type-line { display: inline-flex; gap: 6px; align-items: baseline; margin-right: 12px; }

/* ---------- Record page ---------- */
.disc-related-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.disc-related-list li { display: flex; flex-direction: column; gap: 2px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.disc-related-list li:last-child { border-bottom: 0; }
.disc-related-title { font-weight: 600; line-height: 1.35; overflow-wrap: anywhere; }
.disc-related-meta { font-size: .84rem; color: var(--muted); }
.disc-related-more { margin-top: .5em; font-size: .9rem; font-weight: 600; }

/* ---------- Home ---------- */
.disc-trending { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.disc-trending li {
  display: flex; gap: 16px; align-items: flex-start; padding: 14px 18px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
}
.disc-rank { flex: 0 0 auto; width: 1.6em; font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; line-height: 1.1; color: var(--primary); text-align: center; }
.disc-trending-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.disc-trending-title { font-weight: 600; line-height: 1.35; overflow-wrap: anywhere; }
.disc-trending-meta { font-size: .84rem; color: var(--muted); }
.tag .disc-count { margin-left: 2px; }

/* ---------- Admin ---------- */
.disc-admin { margin: 0 0 1.6rem; padding: 18px 20px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }
.disc-admin-head { display: flex; align-items: center; gap: 12px; }
.disc-admin-head h2 { margin: 0; font-size: 1.15rem; }
.disc-ok, .disc-warn { font-size: .74rem; font-weight: 700; padding: .2em .7em; border-radius: 999px; }
.disc-ok { color: var(--accent); background: rgba(14, 138, 109, .12); background: color-mix(in srgb, var(--accent) 14%, transparent); }
.disc-warn { color: var(--danger); background: rgba(179, 55, 47, .12); background: color-mix(in srgb, var(--danger) 14%, transparent); }
.disc-admin-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px 18px; margin: 14px 0; }
.disc-admin-stats dt { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.disc-admin-stats dd { font-size: .92rem; }
.disc-admin-form { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .disc-layout { grid-template-columns: minmax(0, 1fr); grid-template-areas: "main" "facets"; gap: 24px; }
  .disc-layout-subject { grid-template-areas: "main" "side"; }
  .disc-layout-solo { grid-template-areas: "main"; }
  .disc-facets { position: static; max-height: none; overflow: visible; padding: 18px 16px 4px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); scroll-margin-top: 80px; }
  .disc-refine-link { display: inline; }
  .disc-adv-row { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .disc-bar-input { height: 44px; font-size: 1rem; }
  .disc-bar-btn { min-width: 0; padding-left: .9em; padding-right: .9em; }
  .disc-result { grid-template-columns: minmax(0, 1fr); }
  .disc-pdf { flex-direction: row; justify-self: start; min-width: 0; padding: 4px 10px; gap: 8px; }
  .disc-toolbar { gap: 8px 14px; }
  .disc-trending li { padding: 12px 14px; gap: 10px; }
  .disc-subject-list { columns: 1; }
  .disc-cite { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .disc-tips > summary::before { transition: none; }
}