/* COPD prevalence report — site styles
   Dark report layer. Chart marks use the validated --viz-* ramp, never --accent. */

:root {
  --bg: #07111f;
  --bg-soft: #0d1a2c;
  --panel: rgba(15, 31, 51, 0.88);
  --text: #f4f7fb;
  --muted: #a9b7c8;
  --faint: #718398;
  --line: rgba(255, 255, 255, 0.11);
  --accent: #69a7ff;   /* UI only — fails the dark viz band, never a chart mark */
  --accent-2: #8cf0d2; /* UI only */

  /* Chart marks — validated against --viz-surface (all six checks pass) */
  --viz-1: #4189e3;
  --viz-2: #20a487;
  --viz-3: #d4722c;
  --viz-surface: #0f1926;
  --viz-grid: rgba(255, 255, 255, 0.07);
  --viz-axis: rgba(255, 255, 255, 0.18);
  --viz-dim: #8296ad;
  --viz-faint: #718398;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --max: 940px;
  --radius: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

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

.masthead { border-bottom: 1px solid var(--line); padding: 48px 0 40px; }

.site-back { margin: 0 0 28px; }
.site-back a {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
}
.site-back a:hover { color: var(--accent); }

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 20px;
}

h1 {
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  font-weight: 650;
}

.byline { font-family: var(--mono); font-size: 13px; color: var(--muted); margin: 0 0 28px; }

.meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2px 28px;
  font-family: var(--mono);
  font-size: 12px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin: 0;
}
.meta div { padding: 6px 0; }
.meta dt { color: var(--faint); letter-spacing: 0.06em; text-transform: uppercase; font-size: 10.5px; }
.meta dd { margin: 3px 0 0; color: var(--text); }

/* ---------- abstract KPI row ---------- */

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
  margin: 40px 0 8px;
}

.tile {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 20px 18px;
}
.tile .n {
  font-family: var(--mono);
  font-size: 30px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  display: block;
  margin-bottom: 8px;
}
.tile .l { font-size: 13px; color: var(--muted); display: block; line-height: 1.45; }
.tile .s { font-family: var(--mono); font-size: 11px; color: var(--faint); display: block; margin-top: 7px; }

/* ---------- sections ---------- */

section { padding: 52px 0 0; }

h2 {
  font-size: 13px;
  font-family: var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 500;
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
h2 .num { color: var(--faint); margin-right: 12px; }

h3 { font-size: 17px; margin: 32px 0 10px; font-weight: 600; letter-spacing: -0.01em; }

p { margin: 0 0 16px; color: #dbe4ef; }
p.lede { font-size: 18px; color: var(--text); }

ul { margin: 0 0 16px; padding-left: 20px; color: #dbe4ef; }
li { margin-bottom: 8px; }

strong { color: var(--text); font-weight: 620; }
em.term { font-style: normal; font-family: var(--mono); font-size: 0.92em; color: var(--accent-2); }

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

/* ---------- callout ---------- */

.callout {
  border-left: 2px solid var(--viz-3);
  background: rgba(212, 114, 44, 0.07);
  border-radius: 0 12px 12px 0;
  padding: 16px 20px;
  margin: 24px 0;
}
.callout p:last-child { margin-bottom: 0; }
.callout .tag {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--viz-3);
  display: block;
  margin-bottom: 8px;
}

/* ---------- figures ---------- */

figure {
  margin: 32px 0;
  background: var(--viz-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 20px;
}

.fig-head { margin-bottom: 6px; }
.fig-id {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}
.fig-title { font-size: 16px; font-weight: 600; margin: 6px 0 2px; letter-spacing: -0.01em; }

.chart { width: 100%; overflow-x: auto; }
.chart svg { display: block; min-width: 640px; width: 100%; height: auto; }

figcaption { font-size: 14px; color: var(--muted); margin-top: 14px; line-height: 1.6; }
.src {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--viz-faint);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

/* legend */
.legend { display: flex; flex-wrap: wrap; gap: 18px; margin: 4px 0 14px; }
.legend span { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted); }
.legend i { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }

/* table twin */
details.twin { margin-top: 14px; }
details.twin summary {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--viz-dim);
  cursor: pointer;
  padding: 6px 0;
}
details.twin summary:hover { color: var(--accent); }
table { border-collapse: collapse; width: 100%; font-size: 13px; margin-top: 8px; }
th, td { text-align: left; padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); }
th { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--faint); font-weight: 500; }
td { color: #dbe4ef; }
td.num, th.num { font-family: var(--mono); text-align: right; padding-right: 0; }

/* svg text */
svg text { font-family: var(--mono); fill: var(--viz-dim); }
svg .lab { font-size: 12px; fill: #dbe4ef; font-family: var(--sans); }
svg .sub { font-size: 10.5px; fill: var(--viz-faint); }
svg .val { font-size: 11.5px; fill: #dbe4ef; }
svg .tick { font-size: 10.5px; fill: var(--viz-faint); }
svg .grp { font-size: 10.5px; fill: var(--viz-faint); letter-spacing: 0.1em; }
svg .axttl { font-size: 10.5px; fill: var(--viz-faint); letter-spacing: 0.08em; }

.row-hit .hit-bg { fill: transparent; transition: fill .12s ease; }
.row-hit:hover .hit-bg { fill: rgba(255, 255, 255, 0.04); }

/* ---------- full report CTA ---------- */

.cta {
  display: block;
  margin: 40px 0 8px;
  padding: 26px 28px;
  background: linear-gradient(135deg, rgba(65, 137, 227, 0.13), rgba(32, 164, 135, 0.09));
  border: 1px solid rgba(105, 167, 255, 0.28);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color .18s ease, transform .18s ease;
}
.cta:hover { border-color: var(--accent); transform: translateY(-2px); }
.cta .k {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-2);
  display: block;
  margin-bottom: 10px;
}
.cta .t { font-size: 21px; font-weight: 620; letter-spacing: -0.01em; display: block; margin-bottom: 8px; }
.cta .d { font-size: 14px; color: var(--muted); display: block; }
.cta .arrow { color: var(--accent); }

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

.refs { font-size: 13.5px; color: var(--muted); }
.refs li { margin-bottom: 14px; }

footer {
  margin-top: 64px;
  border-top: 1px solid var(--line);
  padding: 28px 0 56px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--faint);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}

/* ---------- report viewer page ---------- */

.viewer-bar {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.viewer-bar .back { font-family: var(--mono); font-size: 12px; text-decoration: none; }
.viewer-bar .back:hover { text-decoration: underline; }
.viewer-bar h1 { font-size: 17px; margin: 0; font-weight: 600; }
.viewer-actions { display: flex; gap: 10px; }
.btn {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 9px 15px;
  transition: border-color .18s ease, background .18s ease;
}
.btn:hover { border-color: var(--accent); background: rgba(105, 167, 255, 0.09); }
.btn.primary { border-color: rgba(105, 167, 255, 0.42); background: rgba(105, 167, 255, 0.12); }

.pdf-frame {
  width: 100%;
  height: calc(100vh - 160px);
  min-height: 520px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-soft);
  margin: 20px 0;
}
.pdf-fallback {
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 40px;
}
.pdf-fallback p:last-child { margin-bottom: 0; }

@media (max-width: 640px) {
  .masthead { padding: 44px 0 32px; }
  figure { padding: 20px 16px 16px; }
  .wrap { padding: 0 18px; }
  .pdf-frame { height: 70vh; }
}