/* Trade Interdependence explorer — crimson theme mirroring replication-site/app.R */
:root {
  --crimson: #A51C30;
  --crimson-dark: #8C1826;
  --ink: #2b2b2b;
  --muted: #6c757d;
  --line: #dcdcdc;
}

* { box-sizing: border-box; }

/* ensure the [hidden] attribute always wins over author display rules (e.g. flex) */
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  line-height: 1.5;
  background: #fff;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 15px;
}

/* ---- Header ---- */
.header-section {
  text-align: center;
  padding: 55px 20px 40px 20px;
  background-color: var(--crimson);
  color: #fff;
}
.header-title {
  font-size: 2rem;
  font-weight: 700;
  max-width: 820px;
  margin: 0 auto 10px auto;
}
.header-authors {
  font-weight: 300;
  margin: 0 0 25px 0;
  color: rgba(255, 255, 255, 0.9);
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 10px 18px;
  font-size: 1rem;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn-paper {
  background-color: #fff;
  color: var(--crimson);
  border: 2px solid #fff;
  font-weight: 600;
  font-size: 1.05rem;
}
.btn-paper:hover, .btn-paper:focus {
  background-color: rgba(255, 255, 255, 0.85);
  color: var(--crimson-dark);
}
.btn-crimson {
  background-color: var(--crimson);
  border-color: var(--crimson);
  color: #fff;
  width: 100%;
}
.btn-crimson:hover, .btn-crimson:focus {
  background-color: var(--crimson-dark);
  border-color: var(--crimson-dark);
}
.btn-back {
  border: 1px solid var(--crimson);
  color: var(--crimson);
  background-color: transparent;
}
.btn-back:hover, .btn-back:focus {
  background-color: var(--crimson);
  color: #fff;
}
.btn-disabled {
  background-color: #e9ecef;
  color: #868e96;
  border: 1px dashed #adb5bd;
  cursor: not-allowed;
  font-weight: 600;
}

/* ---- Landing layout ---- */
.landing-section { padding: 30px 0 40px 0; }
.row { display: flex; flex-wrap: wrap; gap: 30px; }
.col-left { flex: 1 1 58%; min-width: 320px; }
.col-right { flex: 1 1 34%; min-width: 280px; }

.section-heading { color: var(--crimson); }

/* ---- Table ---- */
.table {
  border-collapse: collapse;
  width: 100%;
  max-width: 700px;
  font-size: 0.95rem;
}
.table th, .table td {
  border: 1px solid var(--line);
  padding: 7px 10px;
  text-align: left;
}
.table thead th {
  background-color: var(--crimson);
  color: #fff;
}
.table tbody tr:nth-child(odd) { background: #faf7f7; }
code {
  background: #f2eaea;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.9em;
}

/* ---- Explore CTA ---- */
.explore-cta {
  text-align: center;
  padding: 35px 28px;
  border: 2px solid var(--crimson);
  border-radius: 8px;
  margin-top: 20px;
}
.explore-cta h3 { color: var(--crimson); margin-top: 8px; }
.cta-icon { font-size: 2.6rem; }
.vintage-note {
  font-size: 0.85rem;
  color: var(--muted);
  background: #faf3f3;
  border-radius: 6px;
  padding: 8px 12px;
  margin: 14px 0 4px 0;
}
.vintage-inline { color: var(--muted); font-size: 0.85rem; margin-top: -6px; }
.beta-note {
  display: inline-block;
  background: var(--crimson);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 10px;
  border-radius: 999px;
  margin: 2px 0 8px 0;
}
.btn-stack { display: flex; flex-direction: column; gap: 12px; margin-top: 18px; }

/* ---- View pages ---- */
.page-content { padding: 20px 0 60px 0; }
.page-title { margin-top: 16px; }
.text-muted { color: var(--muted); max-width: 820px; }

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: flex-end;
  margin: 12px 0 18px 0;
}
.controls-row label { font-weight: 600; font-size: 0.95rem; }
select, input[type="range"] {
  font-size: 1rem;
  padding: 6px;
  min-width: 180px;
  font-family: inherit;
}
input[type="range"] { padding: 0; vertical-align: middle; }
.radio-group { display: inline-flex; gap: 14px; font-weight: 400; flex-wrap: wrap; }
.radio { font-weight: 400; }
.radio.disabled { color: #adb5bd; cursor: not-allowed; }
.radio .hint { color: var(--muted); font-size: 0.82rem; }
.agg-note { color: var(--muted); font-size: 0.85rem; margin: 2px 0 10px 0; min-height: 1em; }

/* measure definitions box */
.measures-box {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px 16px;
  background: #faf7f7;
  font-size: 0.92rem;
}
.measures-box summary {
  font-weight: 700;
  color: var(--crimson);
  cursor: pointer;
}
.measures-box ul { margin: 8px 0; padding-left: 22px; }
.measures-box li { margin: 6px 0; }
.formula-list li { line-height: 2; }
.note-inline { color: var(--muted); font-size: 0.85rem; }
.frac {
  display: inline-flex;
  flex-direction: column;
  text-align: center;
  vertical-align: middle;
  margin: 0 0.25em;
}
.frac .num { border-bottom: 1.5px solid currentColor; padding: 0 0.4em; }
.frac .den { padding: 0 0.4em; }

.dyad-targets { display: inline-flex; gap: 22px; align-items: flex-end; }
.measure-checks { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 6px; }
.measure-checks label { font-weight: 400; }
.warn { color: var(--crimson); min-height: 1.2em; font-size: 0.9rem; }

.two-plots { display: flex; flex-wrap: wrap; gap: 20px; }
.plot-box { flex: 1 1 380px; min-width: 320px; min-height: 420px; }

/* ---- Maps ---- */
.year-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 6px 0 14px 0;
}
.year-controls input[type="range"] { flex: 1 1 auto; min-width: 200px; }
.btn-play { width: auto; padding: 8px 16px; }
.year-label { font-weight: 700; color: var(--crimson); min-width: 3ch; }

.map-box {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: #fbfbfd;
}
.map-box svg { display: block; width: 100%; height: auto; }

.legend {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 12px;
  font-size: 0.9rem;
  flex-wrap: wrap;
}
.legend .swatch { display: inline-block; width: 22px; height: 12px; border-radius: 2px; margin-right: 6px; }
.legend-title { font-weight: 700; color: var(--crimson); }

/* ---- Tooltip (shared, for D3 maps) ---- */
.map-tip {
  position: fixed;
  pointer-events: none;
  background: rgba(33, 33, 33, 0.92);
  color: #fff;
  padding: 6px 9px;
  border-radius: 4px;
  font-size: 0.82rem;
  line-height: 1.3;
  z-index: 1000;
  opacity: 0;
  transition: opacity .1s;
  max-width: 240px;
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 20px 15px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer a { color: var(--crimson); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .header-title { font-size: 1.4rem; }
  .explore-cta { margin-top: 15px; padding: 25px 15px; }
  .row { flex-direction: column; }
}