/* ─────────────────────────────────────────────────────────────────────────
   Chest X-ray Model Leaderboard — minimal scientific theme
   Okabe-Ito model colours come from the data; the UI itself is near-neutral so
   the figures carry the colour. One ink, one accent, lots of whitespace.
   ───────────────────────────────────────────────────────────────────────── */
:root {
  --ink:        #1a1d21;
  --ink-soft:   #545b64;
  --ink-faint:  #626a74;
  --line:       #e4e7eb;
  --line-soft:  #eef1f4;
  --bg:         #ffffff;
  --bg-soft:    #f7f8fa;
  --bg-sink:    #f0f2f5;
  --accent:     #0b6e99;       /* calm teal-blue, distinct from any model hue */
  --accent-bg:  #e6f1f6;
  --good:       #1b7837;
  --on-accent:  #ffffff;       /* text on an accent-filled surface */
  /* chart chrome; charts.js reads these at render time */
  --chart-grid:       #eef1f4;
  --chart-axis:       #c8cdd3;
  --chart-hover-line: #d4d8dd;
  --chart-whisker:    rgba(26,29,33,.45);
  /* status colours: public/private dataset tags, warning banner, load error */
  --pub-ink:  #1b7837; --pub-line:  #bfe3c8; --pub-bg:  #f0f8f2;
  --priv-ink: #9a6700; --priv-line: #f0dcab; --priv-bg: #fcf6e6;
  --warn-ink: #6b5a1e; --warn-line: #f0e0a8; --warn-bg: #fff8e1;
  --error:    #a3341f;
  --radius:     7px;
  --shadow:     0 1px 2px rgba(20,25,35,.05), 0 2px 8px rgba(20,25,35,.04);
  --font:       "Inter", "Helvetica Neue", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono:       "SFMono-Regular", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  --sidebar-w:  292px;
  color-scheme: light;
}

/* Dark mode. theme.js sets data-theme from the visitor's switch, or from the
   operating-system setting when the switch is on Auto. Only the tokens change;
   the model colours come from the data and read on both grounds. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --ink:        #e4e7eb;
  --ink-soft:   #aab1ba;
  --ink-faint:  #8f97a1;
  --line:       #2e333a;
  --line-soft:  #24282e;
  --bg:         #141619;
  --bg-soft:    #1a1d21;
  --bg-sink:    #22262b;
  --accent:     #4cb0db;       /* the teal, lifted to stay readable on dark */
  --accent-bg:  #10303e;
  --good:       #5cc27f;
  --on-accent:  #0b1a22;
  --shadow:     0 1px 2px rgba(0,0,0,.5), 0 2px 8px rgba(0,0,0,.35);
  --chart-grid:       #262a30;
  --chart-axis:       #474e57;
  --chart-hover-line: #3a4048;
  --chart-whisker:    rgba(228,231,235,.55);
  --pub-ink:  #6fcf8e; --pub-line:  #2c5a3b; --pub-bg:  #14261b;
  --priv-ink: #e3b35e; --priv-line: #5e4b22; --priv-bg: #2a2214;
  --warn-ink: #ead69c; --warn-line: #5e4f24; --warn-bg: #29230f;
  --error:    #f08a74;
}
/* the Stanford Medicine logo is Cardinal and grey artwork made for light grounds;
   it sits on a white plate instead of being recoloured */
[data-theme="dark"] .brand-logo { background: #fff; padding: 6px 9px; border-radius: 6px; margin-bottom: 10px; }
[data-theme="dark"] .brand-logo img { margin-bottom: 0; }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  font-size: 14px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

/* ── top bar ── */
.topbar { border-bottom: 1px solid var(--line); background: var(--bg); }
.topbar-inner {
  max-width: 1500px; margin: 0 auto; padding: 18px 26px;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 24px;
}
.brand-logo { display: inline-block; line-height: 0; }
.brand-logo img { height: 34px; width: auto; display: block; margin-bottom: 10px; }
.brand h1 { font-size: 20px; font-weight: 650; letter-spacing: -.01em; margin: 0; }
.h1-sub { font-weight: 400; color: var(--ink-soft); }
.h1-sub::before { content: "· "; }
.subtitle { margin: 5px 0 0; color: var(--ink-soft); font-size: 13px; max-width: 70ch; }
.brand-side { display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }
.topnav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; white-space: nowrap; }
.topnav a, .topnav button {
  font-size: 12px; color: var(--ink-soft); text-decoration: none;
  background: none; border: none; padding: 0; cursor: pointer; font-family: inherit;
}
.topnav a:hover, .topnav button:hover { color: var(--accent); text-decoration: underline; }
/* Auto / Light / Dark switch at the end of the nav */
.theme-seg { display: inline-flex; gap: 2px; padding: 2px; background: var(--bg-sink); border-radius: 6px; }
.topnav .theme-seg button { padding: 2px 8px; border-radius: 4px; font-size: 11px; }
.topnav .theme-seg button:hover { color: var(--ink); text-decoration: none; }
.topnav .theme-seg button[aria-pressed="true"] { background: var(--bg); color: var(--ink); font-weight: 600; box-shadow: var(--shadow); }
.brand-meta { display: flex; gap: 20px; white-space: nowrap; }
.brand-meta .stat { text-align: right; }
.brand-meta .stat b { display: block; font-size: 19px; font-weight: 650; line-height: 1; }
.brand-meta .stat span { font-size: 11px; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .04em; }

/* ── layout ──
   The page's one scrollbar moves both columns. Each column is sticky, and app.js
   sets its `top` to min(0, window height - column height): a column that fits the
   window stays pinned at the top, and a taller one scrolls until its end is in
   view, then holds. The longer column sets the page length; the shorter one stays
   in the window instead of leaving blank space under it. */
.layout { display: flex; max-width: 1500px; margin: 0 auto; align-items: flex-start; position: relative; }
/* the column divider spans the layout, whichever column is longer */
.layout::before {
  content: ""; position: absolute; top: 0; bottom: 0;
  left: calc(var(--sidebar-w) - 1px); border-left: 1px solid var(--line);
}
.sidebar { width: var(--sidebar-w); flex: 0 0 var(--sidebar-w); position: sticky; top: 0; }
.sidebar-inner { padding: 18px 18px 40px; }
.main { flex: 1 1 auto; min-width: 0; padding: 18px 26px 60px; position: sticky; top: 0; }

/* ── controls ── */
.ctl { margin-bottom: 20px; }
.ctl-h { font-size: 11px; font-weight: 650; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-soft); display: block; margin-bottom: 8px; }
.ctl-h-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.ctl-h-row .ctl-h { margin: 0; flex: 1; }
.info { display: inline-flex; width: 14px; height: 14px; border-radius: 50%; background: var(--bg-sink); color: var(--ink-faint); font-size: 9px; align-items: center; justify-content: center; cursor: help; font-weight: 700; vertical-align: middle; }
.mini { font-size: 10.5px; color: var(--accent); background: none; border: none; cursor: pointer; padding: 2px 3px; text-transform: lowercase; letter-spacing: .02em; }
.mini:hover { text-decoration: underline; }

/* segmented control */
.seg { display: flex; flex-wrap: wrap; gap: 4px; background: var(--bg-sink); padding: 3px; border-radius: var(--radius); }
.seg.seg-sm { font-size: 12px; }
.seg button {
  flex: 1 1 auto; border: none; background: transparent; cursor: pointer;
  padding: 6px 8px; border-radius: 5px; font-size: 12px; color: var(--ink-soft);
  font-family: inherit; white-space: nowrap; transition: background .12s, color .12s;
}
.seg button:hover { color: var(--ink); }
.seg button.on { background: var(--bg); color: var(--ink); font-weight: 600; box-shadow: var(--shadow); }
.metric-desc { font-size: 11.5px; color: var(--ink-faint); margin: 8px 2px 0; line-height: 1.4; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chips-scroll { max-height: 196px; overflow-y: auto; padding: 2px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); background: var(--bg); color: var(--ink-soft);
  border-radius: 20px; padding: 4px 10px 4px 9px; font-size: 12px; cursor: pointer;
  user-select: none; transition: background .12s, border-color .12s, color .12s;
  /* chips are buttons: reset the UA button look so they match the old spans */
  font-family: inherit; line-height: inherit; margin: 0;
}
.chip:focus-visible, .seg button:focus-visible, .tab:focus-visible, .th-sort:focus-visible,
.mini:focus-visible, .scope-btn:focus-visible, .reset:focus-visible, .tool:focus-visible,
.topnav button:focus-visible, .info:focus-visible, .about > summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
.chip:hover { border-color: var(--ink-faint); }
.chip .dot { width: 9px; height: 9px; border-radius: 50%; flex: 0 0 auto; }
.chip.on { background: var(--accent-bg); border-color: var(--accent); color: var(--ink); font-weight: 500; }
.chip.off { background: var(--bg-sink); border-style: dashed; color: var(--ink-soft); text-decoration: line-through; }
.chip.off .dot { background: var(--line) !important; }
.chip .tag { font-size: 9px; color: var(--ink-faint); border: 1px solid var(--line); border-radius: 3px; padding: 0 3px; text-transform: uppercase; }
.chip .tag.pub { color: var(--pub-ink); border-color: var(--pub-line); background: var(--pub-bg); }
.chip .tag.priv { color: var(--priv-ink); border-color: var(--priv-line); background: var(--priv-bg); }

/* scope quick-toggles (all public / all private) */
.scope-toggles { display: flex; gap: 6px; margin-bottom: 9px; }
.scope-btn {
  flex: 1; font-size: 11.5px; font-family: inherit; cursor: pointer;
  padding: 5px 8px; border: 1px solid var(--line); border-radius: 5px;
  background: var(--bg); color: var(--ink-soft); transition: background .12s, border-color .12s, color .12s;
}
.scope-btn:hover { border-color: var(--ink-faint); color: var(--ink); }
.scope-btn.on { background: var(--accent-bg); border-color: var(--accent); color: var(--ink); font-weight: 600; }

.search {
  width: 100%; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 6px 9px; font-size: 12px; font-family: inherit; margin-bottom: 8px; color: var(--ink); background: var(--bg);
}
.search:focus { border-color: var(--accent); }
.search:focus:not(:focus-visible) { outline: none; }
.search:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.reset {
  width: 100%; margin-top: 6px; padding: 9px; border: 1px solid var(--line);
  background: var(--bg); border-radius: var(--radius); cursor: pointer;
  font-size: 12px; color: var(--ink-soft); font-family: inherit;
}
.reset:hover { background: var(--bg-soft); color: var(--ink); }

/* ── tabs ── */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-bottom: 14px; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab {
  border: none; background: none; cursor: pointer; font-family: inherit;
  padding: 9px 15px; font-size: 13.5px; color: var(--ink-soft);
  border-bottom: 2px solid transparent; margin-bottom: -1px; transition: color .12s; flex: 0 0 auto; white-space: nowrap;
}
.tab:hover { color: var(--ink); }
.tab.active { color: var(--ink); font-weight: 600; border-bottom-color: var(--accent); }

.viewcap { font-size: 12px; color: var(--ink-faint); margin: 0 0 14px; }
.viewcap b { color: var(--ink-soft); font-weight: 600; }

.panel { animation: fade .2s ease; }
.panel.hidden { display: none; }
@keyframes fade { from { opacity: 0; transform: translateY(3px); } to { opacity: 1; transform: none; } }
.panel-tools { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; flex-wrap: wrap; }
.inline { font-size: 12px; color: var(--ink-soft); display: inline-flex; align-items: center; gap: 6px; }
.inline select { font-family: inherit; font-size: 12px; padding: 4px 6px; border: 1px solid var(--line); border-radius: 5px; background: var(--bg); color: var(--ink); }
.hint { font-size: 11.5px; color: var(--ink-faint); }
.tool { font-size: 12px; padding: 5px 11px; border: 1px solid var(--line); background: var(--bg); border-radius: 5px; cursor: pointer; color: var(--ink-soft); font-family: inherit; }
.tool:hover { background: var(--bg-soft); color: var(--ink); }

/* ── leaderboard table ── */
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
thead th {
  text-align: left; font-weight: 600; color: var(--ink-soft); font-size: 11px;
  text-transform: uppercase; letter-spacing: .03em; padding: 8px 12px;
  border-bottom: 2px solid var(--line); white-space: nowrap; cursor: pointer; user-select: none;
}
thead th.num { text-align: right; }
.th-sort { font: inherit; color: inherit; text-transform: inherit; letter-spacing: inherit; background: none; border: none; padding: 0; margin: 0; cursor: pointer; text-align: inherit; }
thead th .arr { color: var(--accent); font-size: 9px; margin-left: 3px; }
tbody td { padding: 9px 12px; border-bottom: 1px solid var(--line-soft); vertical-align: middle; }
tbody tr:hover { background: var(--bg-soft); }
td.num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--mono); font-size: 12px; }
td.rank { color: var(--ink-faint); font-variant-numeric: tabular-nums; width: 30px; }
.model-cell { display: flex; align-items: center; gap: 9px; }
.model-cell .dot { width: 11px; height: 11px; border-radius: 50%; flex: 0 0 auto; }
.model-cell .nm { font-weight: 600; }
.model-cell .ty { font-size: 9.5px; color: var(--ink-faint); border: 1px solid var(--line); border-radius: 3px; padding: 0 4px; text-transform: uppercase; letter-spacing: .03em; }
.ci { color: var(--ink-faint); font-size: 11px; }
.bar-cell { width: 150px; }
.bar-track { background: var(--bg-sink); border-radius: 3px; height: 7px; position: relative; overflow: hidden; }
.bar-fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 3px; }
.binary-note { color: var(--ink-faint); font-style: italic; font-size: 11px; }

.chart { width: 100%; min-height: 460px; }
.footnote { font-size: 11px; color: var(--ink-faint); margin-top: 20px; line-height: 1.5; border-top: 1px solid var(--line-soft); padding-top: 12px; }

.empty { padding: 60px 20px; text-align: center; color: var(--ink-faint); font-size: 14px; }

/* ── boot / failure states ── */
.hidden { display: none !important; }
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: var(--on-accent); padding: 9px 14px; border-radius: 0 0 var(--radius) 0; font-size: 13px;
}
.skip-link:focus { left: 0; }
.banner {
  max-width: 1500px; margin: 14px auto; padding: 12px 16px;
  background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: var(--radius);
  font-size: 13px; color: var(--warn-ink);
}
.banner code { font-family: var(--mono); font-size: 12px; }
.boot { padding: 90px 26px; text-align: center; color: var(--ink-faint); }
.boot-spin {
  width: 22px; height: 22px; margin: 0 auto 14px;
  border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.boot.failed .boot-spin { display: none; }
.boot-msg { font-size: 13px; margin: 0; }
.boot.failed .boot-msg { color: var(--error); max-width: 62ch; margin: 0 auto; line-height: 1.6; }
@media (prefers-reduced-motion: reduce) {
  .boot-spin, .panel { animation: none; }
  .seg button, .chip { transition: none; }
}

/* ── about & methods ── */
.about { margin-top: 34px; border-top: 1px solid var(--line); padding-top: 6px; }
.about > summary {
  cursor: pointer; padding: 12px 0; font-size: 13px; font-weight: 600; color: var(--accent);
  list-style: none;
}
.about > summary::-webkit-details-marker { display: none; }
.about > summary::before { content: "▸ "; display: inline-block; width: 1em; }
.about[open] > summary::before { content: "▾ "; }
.about-body { max-width: 82ch; padding-bottom: 18px; font-size: 13px; color: var(--ink-soft); }
.about-body h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--ink); margin: 24px 0 8px; }
.about-body h3:first-child { margin-top: 8px; }
.about-body p { margin: 0 0 10px; line-height: 1.6; }
.about-body ul { margin: 0 0 10px; padding-left: 18px; line-height: 1.6; }
.about-body li { margin-bottom: 6px; }
.about-body b { color: var(--ink); font-weight: 600; }
.tiny { font-size: 11px; color: var(--ink-faint); line-height: 1.55; }
.about-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(232px, 1fr)); gap: 6px 18px; margin-bottom: 10px; }
.about-item { display: flex; align-items: baseline; gap: 7px; font-size: 12px; padding: 3px 0; border-bottom: 1px solid var(--line-soft); }
.about-item .dot { width: 8px; height: 8px; border-radius: 50%; flex: 0 0 auto; align-self: center; }
.about-item .nm { font-weight: 600; color: var(--ink); }
.about-item .sub { color: var(--ink-faint); font-size: 11px; margin-left: auto; text-align: right; white-space: nowrap; }
/* models carry a long citation, so give it its own line rather than let the
   name break mid-word to make room */
.about-item.model { flex-wrap: wrap; align-items: center; }
.about-item.model .nm { white-space: nowrap; }
.about-item .ty { font-size: 9px; color: var(--ink-faint); border: 1px solid var(--line); border-radius: 3px; padding: 0 4px; text-transform: uppercase; letter-spacing: .03em; }
.about-item .cit { flex-basis: 100%; color: var(--ink-faint); font-size: 11px; padding-left: 15px; }
.about-dl { margin: 0 0 10px; display: grid; grid-template-columns: max-content 1fr; gap: 5px 14px; font-size: 12px; }
.about-dl dt { font-weight: 600; color: var(--ink); }
.about-dl dd { margin: 0; }
.prov { font-family: var(--mono); font-size: 11px; list-style: none; padding-left: 0 !important; }
.prov li { display: flex; gap: 10px; border-bottom: 1px solid var(--line-soft); padding: 3px 0; }
.prov span { color: var(--ink-faint); min-width: 110px; }
.prov code { word-break: break-all; }
.cite-box { position: relative; }
.cite-box pre {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 13px 15px; font-family: var(--mono); font-size: 11.5px; line-height: 1.55;
  overflow-x: auto; margin: 0 0 8px; color: var(--ink);
}

/* ── site footer ── */
.sitefoot { border-top: 1px solid var(--line); background: var(--bg-soft); margin-top: 10px; }
.sitefoot-inner {
  max-width: 1500px; margin: 0 auto; padding: 26px 26px 34px;
  display: grid; grid-template-columns: 2.2fr 1fr 1fr 1.6fr; gap: 28px;
}
.foot-col > b { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--ink); display: block; margin-bottom: 8px; }
.foot-col p { margin: 0; }
.foot-links { list-style: none; margin: 0; padding: 0; font-size: 12px; }
.foot-links li { margin-bottom: 5px; }
.sitefoot a { color: var(--accent); text-decoration: none; }
.sitefoot a:hover { text-decoration: underline; }
#foot-version { font-family: var(--mono); font-size: 10.5px; word-break: break-all; }

@media (max-width: 920px) {
  .layout { flex-direction: column; }
  .layout::before { display: none; }
  .sidebar { width: 100%; flex-basis: auto; position: static; border-bottom: 1px solid var(--line); }
  .main { position: static; }
  .topbar-inner { flex-direction: column; align-items: flex-start; }
  .brand-side { align-items: flex-start; width: 100%; }
  .brand-meta { gap: 24px; }
  .brand-meta .stat { text-align: left; }
  .sitefoot-inner { grid-template-columns: 1fr 1fr; gap: 22px; }
}
@media (max-width: 560px) {
  .topbar-inner, .main, .sitefoot-inner { padding-left: 16px; padding-right: 16px; }
  .sitefoot-inner { grid-template-columns: 1fr; }
  .brand h1 { font-size: 17px; }
  .h1-sub { display: block; font-size: 13px; margin-top: 2px; }
  .h1-sub::before { content: ""; }
  .chart { min-height: 380px; }
}

/* ── print: just the table and footnote ── */
@media print {
  .sidebar, .topnav, .tabs, .tool, .skip-link { display: none !important; }
  .layout { display: block; max-width: none; }
  .layout::before { display: none; }
  .main { padding: 0; position: static; }
  .panel { animation: none; }
}