/* Cultural-NLP Dataset Hub — specimen-catalog aesthetic.
   Palette: chart paper / slate ink / index blue, with the paper's own
   C / CL / L mode colors as the identity system. */

:root {
  --paper: #f4f6f3;
  --card: #ffffff;
  --ink: #1c2b33;
  --muted: #5b6b72;
  --rule: #d9e0db;
  --accent: #20558a;
  --accent-soft: #e3ecf5;
  --mode-c: #0e7c5b;
  --mode-cl: #b26a00;
  --mode-l: #b3383e;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Fraunces", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--accent); }

/* ---------------------------------------------------------------- masthead */

.masthead {
  border-bottom: 2px solid var(--ink);
  background: var(--card);
  padding: 2rem 1.5rem 0;
}
.masthead-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.masthead h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
}
.masthead-sub {
  margin: 0 0 1rem;
  max-width: 46rem;
  color: var(--muted);
}
.masthead-actions { display: flex; gap: 0.6rem; padding-top: 0.4rem; }

.btn {
  display: inline-block;
  font: 500 0.88rem/1 var(--sans);
  padding: 0.6rem 0.95rem;
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  background: var(--card);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: var(--accent-soft); }
.btn-primary { background: var(--ink); color: var(--card); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn:focus-visible, .link-btn:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* The signature: live query sentence rendered as a catalog call-line. */
.query-line {
  max-width: 1200px;
  margin: 0 auto;
  font-family: var(--mono);
  font-size: 0.84rem;
  padding: 0.7rem 0 0.8rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  min-height: 2.4rem;
}
.query-count { color: var(--ink); font-weight: 500; }
.query-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper);
  padding: 0.12rem 0.45rem;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
}
.query-chip:hover { border-color: var(--mode-l); color: var(--mode-l); }
.query-chip .x { color: var(--muted); }
.query-chip:hover .x { color: var(--mode-l); }

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

.layout {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 1.75rem;
  padding: 1.5rem;
}

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

.facets {
  position: sticky;
  top: 1rem;
  align-self: start;
  max-height: calc(100vh - 2rem);
  overflow-y: auto;
  padding-right: 0.25rem;
}
.facets-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font: 600 0.78rem/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
}
.link-btn {
  background: none; border: none; padding: 0;
  font: inherit; color: var(--accent);
  cursor: pointer; text-decoration: underline;
  text-transform: none; letter-spacing: 0;
}
.facet { border-bottom: 1px solid var(--rule); }
.facet summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0;
  font-weight: 600;
  font-size: 0.85rem;
}
.facet summary::-webkit-details-marker { display: none; }
.facet summary::after { content: "+"; color: var(--muted); font-family: var(--mono); }
.facet[open] summary::after { content: "–"; }
.facet-active-count {
  font: 500 0.7rem/1.5 var(--mono);
  background: var(--ink); color: var(--card);
  border-radius: 8px; padding: 0 0.45rem;
  margin-left: auto; margin-right: 0.5rem;
}
.facet-body { padding: 0 0 0.7rem; }
.facet-search {
  width: 100%;
  font: 400 0.8rem/1.3 var(--sans);
  padding: 0.3rem 0.4rem;
  border: 1px solid var(--rule);
  border-radius: 2px;
  margin-bottom: 0.4rem;
  background: var(--card);
  color: var(--ink);
}
.facet-option {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.13rem 0;
  font-size: 0.83rem;
  cursor: pointer;
}
.facet-option input { accent-color: var(--accent); }
.facet-option .n {
  margin-left: auto;
  font: 400 0.72rem/1.6 var(--mono);
  color: var(--muted);
}
.facet-option.zero { color: var(--muted); opacity: 0.55; }
.facet-more {
  font: 400 0.78rem/1.6 var(--sans);
  color: var(--accent);
  background: none; border: none; padding: 0.15rem 0;
  cursor: pointer; text-decoration: underline;
}

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

.toolbar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
#search {
  flex: 1 1 220px;
  font: 400 0.9rem/1.4 var(--sans);
  padding: 0.55rem 0.7rem;
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  background: var(--card);
  color: var(--ink);
}
.sort-label { font-size: 0.83rem; color: var(--muted); display: flex; gap: 0.4rem; align-items: center; }
#sort {
  font: 400 0.85rem/1.3 var(--sans);
  padding: 0.45rem 0.4rem;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: var(--card);
  color: var(--ink);
}

.rows { list-style: none; margin: 0; padding: 0; }

.row {
  background: var(--card);
  border: 1px solid var(--rule);
  border-left: 4px solid var(--rule);
  border-radius: 3px;
  margin-bottom: 0.6rem;
}
.row.mode-C { border-left-color: var(--mode-c); }
.row.mode-CL { border-left-color: var(--mode-cl); }
.row.mode-L { border-left-color: var(--mode-l); }

.row summary {
  list-style: none;
  cursor: pointer;
  padding: 0.65rem 0.9rem;
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) auto;
  gap: 0.35rem 0.8rem;
  align-items: baseline;
}
.row summary::-webkit-details-marker { display: none; }

.mode {
  font: 500 0.72rem/1.7 var(--mono);
  border-radius: 2px;
  padding: 0 0.3rem;
  color: #fff;
  display: inline-block;
  min-width: 1.6rem;
  text-align: center;
}
.mode-C.mode { background: var(--mode-c); }
.mode-CL.mode { background: var(--mode-cl); }
.mode-L.mode { background: var(--mode-l); }
.mode-none.mode { background: var(--muted); }

.row-name { font-weight: 600; font-size: 0.95rem; }
.row-name .row-year { font: 400 0.78rem/1 var(--mono); color: var(--muted); margin-left: 0.5rem; }
.row-title {
  grid-column: 2 / 4;
  color: var(--muted);
  font-size: 0.83rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.row-tags {
  grid-column: 2 / 4;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  font: 400 0.72rem/1.5 var(--mono);
  color: var(--muted);
}
.tag {
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 0 0.35rem;
  background: var(--paper);
}
.tag.flag-yes { border-color: var(--accent); color: var(--accent); }

.row-open-hint { font: 400 0.75rem/1.6 var(--mono); color: var(--muted); justify-self: end; white-space: nowrap; }
.row-annotate { color: var(--accent); text-decoration: none; }
.row-annotate:hover { text-decoration: underline; }

.row-detail {
  border-top: 1px dashed var(--rule);
  padding: 0.75rem 0.9rem 0.9rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.7rem 1.4rem;
  font-size: 0.85rem;
}
.row-detail dt {
  font: 600 0.68rem/1.6 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  margin-bottom: 0.1rem;
}
.row-detail dd { margin: 0; overflow-wrap: anywhere; }
.row-detail .links a { margin-right: 0.9rem; }
.row-detail .example { font-style: italic; color: var(--muted); }

.ann-scroll { overflow-x: auto; }
.ann-table {
  border-collapse: collapse;
  width: 100%;
  min-width: 640px;
  font-size: 0.82rem;
}
.ann-table td { max-width: 16rem; }
.ann-table th {
  text-align: left;
  font: 600 0.68rem/1.6 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  border-bottom: 1px solid var(--rule);
  padding: 0.15rem 0.9rem 0.15rem 0;
}
.ann-table td {
  border-bottom: 1px solid var(--rule);
  padding: 0.3rem 0.9rem 0.3rem 0;
  vertical-align: top;
}
.ann-table tr:last-child td { border-bottom: none; }

.empty {
  background: var(--card);
  border: 1px dashed var(--rule);
  border-radius: 3px;
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
}

/* ---------------------------------------------------------------- protocol */

.protocol {
  border-top: 2px solid var(--ink);
  background: var(--card);
  margin-top: 2rem;
  padding: 0 1.5rem;
}
.protocol details { max-width: 1200px; margin: 0 auto; }
.protocol summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding: 1.1rem 0;
}
.protocol summary::-webkit-details-marker { display: none; }
.protocol summary::after { content: "+"; color: var(--muted); font-family: var(--mono); margin-left: auto; }
.protocol details[open] summary::after { content: "–"; }
.protocol h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.25rem;
  margin: 0;
}
.protocol-hint { font: 400 0.8rem/1.4 var(--mono); color: var(--muted); }
.protocol-body { padding-bottom: 1.3rem; max-width: 56rem; }
.protocol-body p { margin: 0 0 0.85rem; }
.protocol-body code { font: 400 0.82em var(--mono); background: var(--paper); border: 1px solid var(--rule); border-radius: 2px; padding: 0 0.25rem; }
.info-inline {
  display: inline-flex; align-items: center; justify-content: center;
  width: 0.95rem; height: 0.95rem;
  border: 1px solid var(--muted); border-radius: 50%;
  font: italic 600 0.62rem/1 Georgia, serif; color: var(--muted);
  vertical-align: 0.1rem;
}

/* --------------------------------------------------------- acknowledgments */

.ack-dialog {
  border: 2px solid var(--ink);
  border-radius: 4px;
  background: var(--card);
  color: var(--ink);
  padding: 1.4rem 1.6rem;
  width: min(600px, 92vw);
  max-height: 85vh;
}
.ack-dialog::backdrop { background: rgba(20, 35, 45, 0.45); }
.ack-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.6rem;
}
.ack-head h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0;
}
.ack-intro, .ack-join { color: var(--muted); font-size: 0.9rem; }
.ack-join { margin-bottom: 0; }
.ack-table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.8rem 0;
  font-size: 0.88rem;
}
.ack-table th {
  text-align: left;
  font: 600 0.7rem/1.6 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
  border-bottom: 2px solid var(--ink);
  padding: 0.25rem 0.8rem 0.25rem 0;
}
.ack-table td {
  border-bottom: 1px solid var(--rule);
  padding: 0.4rem 0.8rem 0.4rem 0;
  vertical-align: top;
}
.ack-table .num { text-align: right; font-family: var(--mono); padding-right: 0; }
.ack-who { font-weight: 600; }
.ack-total td { border-bottom: none; border-top: 2px solid var(--ink); font-weight: 600; }

/* ------------------------------------------------------------------ footer */

.footer {
  border-top: 2px solid var(--ink);
  background: var(--card);
  margin-top: 2rem;
  padding: 1.5rem;
}
.footer p { max-width: 1200px; margin: 0 auto 0.6rem; }
.footer-fine { font-size: 0.8rem; color: var(--muted); }
.footer-fine .mode { transform: translateY(-1px); }

/* ---------------------------------------------------------------- tooltips
   Annotation guidance from the coding manual, shown on hover or keyboard
   focus. The ⓘ icon carries facet-level help; facet options carry their own
   definition on the whole label row. */

.info {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 0.95rem;
  height: 0.95rem;
  border: 1px solid var(--muted);
  border-radius: 50%;
  font: italic 600 0.62rem/1 Georgia, serif;
  color: var(--muted);
  cursor: help;
  vertical-align: 0.1rem;
  flex: none;
}
.info:hover, .info:focus-visible { border-color: var(--accent); color: var(--accent); }

/* The tooltip itself is a single JS-positioned floating element (see
   app.js) — CSS ::after tooltips would be clipped by the facet rail's
   scroll container. */
.tooltip {
  position: fixed;
  z-index: 100;
  max-width: min(340px, 80vw);
  background: var(--ink);
  color: #f2f4f1;
  padding: 0.55rem 0.7rem;
  border-radius: 3px;
  font: 400 0.76rem/1.5 var(--sans);
  box-shadow: 0 3px 14px rgba(20, 35, 45, 0.28);
  pointer-events: none;
}
.ann-table th .info { margin-left: 0.15rem; }

/* ------------------------------------------------------------------ mobile */

@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; padding: 1rem; }
  .facets { position: static; max-height: none; }
  .masthead { padding: 1.25rem 1rem 0; }
  .row summary { grid-template-columns: 2.2rem minmax(0, 1fr); }
  .row-open-hint { display: none; }
  .row-title, .row-tags { grid-column: 2 / 3; }
}