/* ============================================================
   charts.css — live-SVG appendix figures (charts.js) + figdeck +
   leaderboard-preview support. Loaded by index.html / leaderboard.html.
   ============================================================ */

.ig-chart { position: relative; margin-top: .6rem; }
.ig-svg { display: block; width: 100%; height: auto; overflow: visible; }

/* ── SVG text ─────────────────────────────────────────────── */
.ig-t {
  font-family: 'Noto Sans', system-ui, sans-serif;
  fill: var(--text);
}
.ig-t-tick   { font-size: 11px; fill: var(--text-muted); }
.ig-t-axis   { font-size: 12.5px; font-weight: 600; fill: var(--text-muted); font-family: 'Google Sans', sans-serif; }
.ig-t-panel  { font-size: 12.5px; font-weight: 700; fill: var(--text); font-family: 'Google Sans', sans-serif; }
.ig-t-note   { font-size: 11px; font-style: italic; fill: var(--text-muted); }
.ig-t-strong { font-size: 13px; font-weight: 700; fill: var(--text); }
.ig-t-val    { font-size: 10.5px; font-weight: 600; fill: var(--text); }
.ig-t-right  { text-anchor: start; }

/* ── Entrance animation ──────────────────────────────────────
   Base: fade + tiny rise. Bars grow from baseline. Lines draw in
   via stroke-dashoffset (set inline by JS; overridden to 0 here).
   ============================================================ */
.ig-anim {
  opacity: 0;
  transform: translate3d(0, 6px, 0);
  transition: opacity 520ms var(--ease-out), transform 520ms var(--ease-out);
}
.ig-anim.is-drawn { opacity: 1; transform: none; }

.ig-dot {
  transform-box: fill-box; transform-origin: center;
  transform: scale(.35);
  transition: opacity 420ms var(--ease-out), transform 420ms var(--ease-spring);
}
.ig-dot.is-drawn { opacity: 1; transform: scale(1); }

.ig-bar {
  transform-box: fill-box;
  transform: scaleY(0);
  transition: transform 680ms var(--ease-out);
}
.ig-bar.is-drawn { transform: scaleY(1); }

.ig-bar-x {
  transform-box: fill-box;
  transform: scaleX(0);
  transition: transform 680ms var(--ease-out);
}
.ig-bar-x.is-drawn { transform: scaleX(1); }

.ig-line {
  transition: stroke-dashoffset 950ms var(--ease-out);
}
.ig-line.is-drawn { stroke-dashoffset: 0 !important; }

@media (prefers-reduced-motion: reduce) {
  .ig-anim, .ig-dot, .ig-bar, .ig-bar-x, .ig-line { transition: none !important; }
}

/* ── Hover tooltip ────────────────────────────────────────── */
.ig-tip {
  position: fixed; top: 0; left: 0; z-index: 300;
  max-width: 240px; padding: .55rem .7rem;
  background: var(--on-bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow-lg);
  font: 500 .78rem/1.4 'Noto Sans', sans-serif; color: var(--text);
  opacity: 0; pointer-events: none;
  transition: opacity 120ms ease;
}
.ig-tip b { display: block; font: 700 .82rem/1.3 'Google Sans', sans-serif; margin-bottom: .1rem; }
.ig-tip i { font-style: normal; color: var(--text-muted); }
.ig-tip-fam {
  display: inline-block; margin-left: .4rem; padding: 0 .4rem;
  border: 1px solid currentColor; border-radius: var(--radius-pill);
  font-size: .68rem; font-weight: 700;
}

/* ── Legend ───────────────────────────────────────────────── */
.ig-legend { display: flex; flex-wrap: wrap; gap: .5rem 1.1rem; margin-top: .9rem; justify-content: center; }
.ig-legend-item {
  display: inline-flex; align-items: center; gap: .4rem;
  font: 600 .78rem/1 'Google Sans', sans-serif; color: var(--text-muted);
}
.ig-legend-swatch { width: 11px; height: 11px; flex-shrink: 0; display: inline-block; }
.ig-legend-dot    { border-radius: 50%; }
.ig-legend-square { border-radius: 2px; }
.ig-legend-tri     { width: 0; height: 0; background: transparent !important;
  border-left: 6px solid transparent; border-right: 6px solid transparent; border-bottom: 10px solid currentColor; }
.ig-legend-dash   { height: 3px; width: 16px; border-radius: 2px; }

/* ── Chart note ───────────────────────────────────────────── */
.ig-chart-note {
  margin-top: 1rem; padding-top: .8rem; border-top: 1px solid var(--border);
  font-size: .84rem; line-height: 1.6; color: var(--text-muted);
}
.ig-chart-note b { color: var(--text); }

/* ── In-chart tab switcher (encoder chart) ───────────────── */
.ig-chart-tabs { display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: .8rem; }
.ig-chart-tab {
  padding: .38rem .85rem; border-radius: var(--radius-pill);
  border: 1px solid var(--border); background: var(--on-bg); color: var(--text-muted);
  font: 600 .8rem/1 'Google Sans', sans-serif; cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out);
}
.ig-chart-tab:hover { border-color: var(--primary); color: var(--text); }
.ig-chart-tab.is-active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ── Figure deck (results section segmented showcase + panels) ─
   An editorial index rather than a flat tab bar: figures cluster under
   the same Q1/Q2/Q3 groups the key-finding cards above use, each pill
   carries a top accent rail in that figure's own chart colour (a visual
   preview of what you're about to see), a dot-rail below tracks position
   across the whole deck, and prev/next arrows + a "n / N" counter give a
   second, linear way to move through it. Same panels, same data — only
   how you travel between them changed. */
.ig-figdeck-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem;
  flex-wrap: wrap; margin-bottom: .7rem;
}
.ig-figdeck-nav { display: flex; gap: 1.4rem; flex-wrap: wrap; flex: 1; min-width: 0; }
.ig-figdeck-group { display: flex; flex-direction: column; gap: .4rem; }
.ig-figdeck-group-label {
  font: 700 .66rem/1 'Google Sans', sans-serif; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-muted); padding-left: .2rem;
}
.ig-figdeck-group-tabs { display: inline-flex; gap: .2rem; padding: .3rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-pill); }

.ig-figdeck-tab {
  position: relative;
  display: inline-flex; flex-direction: column; align-items: flex-start; gap: .1rem;
  padding: .5rem 1rem .45rem; border-radius: var(--radius-pill);
  border: none; background: transparent; color: var(--text-muted);
  font: 600 .82rem/1.3 'Google Sans', sans-serif; text-align: left; cursor: pointer;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.ig-figdeck-tab::before {
  content: ""; position: absolute; left: .9rem; right: .9rem; top: .3rem; height: 2.5px; border-radius: 2px;
  background: var(--accent, var(--primary)); opacity: 0; transition: opacity var(--dur-fast) var(--ease-out);
}
.ig-figdeck-tab:hover { color: var(--text); transform: translateY(-1px); }
.ig-figdeck-tab:hover::before { opacity: .5; }
.ig-figdeck-tab.is-active { background: var(--accent, var(--primary)); color: #fff; }
.ig-figdeck-tab.is-active::before { opacity: 0; }
.ig-figdeck-tab.is-active small { color: rgba(255,255,255,.82); }
.ig-figdeck-tab small { display: block; font-weight: 400; opacity: .8; font-size: .7rem; line-height: 1.1; }
.ig-figdeck-tab:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* Prev / next + counter, aligned to the right of the nav on wide screens */
.ig-figdeck-controls {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .3rem; height: fit-content;
}
.ig-figdeck-arrow {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--on-bg); color: var(--text-muted);
  cursor: pointer; font-size: .75rem;
  transition: all var(--dur-fast) var(--ease-out);
}
.ig-figdeck-arrow:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.ig-figdeck-arrow:disabled { opacity: .3; cursor: default; }
.ig-figdeck-counter {
  font: 700 .78rem/1 'Google Sans', sans-serif; color: var(--text-muted);
  font-variant-numeric: tabular-nums; min-width: 3.4em; text-align: center;
}

/* Dot rail: a quiet, always-visible map of the whole deck */
.ig-figdeck-rail { display: flex; gap: .35rem; margin: .2rem 0 1.3rem; }
.ig-figdeck-dot {
  flex: 1; max-width: 46px; height: 4px; border-radius: 2px;
  background: var(--border); cursor: pointer; border: none; padding: 0;
  transition: background var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.ig-figdeck-dot:hover { transform: scaleY(1.4); }
.ig-figdeck-dot.is-active { background: var(--accent, var(--primary)); }

@media (max-width: 640px) {
  .ig-figdeck-head { flex-direction: column; }
  .ig-figdeck-controls { align-self: flex-end; }
}

.ig-figdeck-panel { display: none; }
.ig-figdeck-panel.is-active { display: block; animation: ig-fig-in 420ms var(--ease-out); }
.ig-figdeck-panel[hidden] { display: none !important; }
@keyframes ig-fig-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .ig-figdeck-panel.is-active { animation: none; }
}

.ig-figure { background: var(--on-bg); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.6rem 1.8rem; }
.ig-figure-head { display: flex; align-items: baseline; gap: .7rem; margin-bottom: .3rem; flex-wrap: wrap; }
.ig-figure-tag {
  font: 700 .68rem/1 'Google Sans', sans-serif; letter-spacing: .06em; text-transform: uppercase;
  color: var(--primary); background: var(--primary-bg); padding: .2rem .55rem; border-radius: var(--radius-pill);
}
.ig-figure-title { font: 700 1.15rem/1.3 'Google Sans', sans-serif; margin: 0; }
/* Authored paper figures: intrinsic ratio, never cropped or overlaid. */
.ig-figure > img {
  width: 100%; height: auto; display: block;
  border-radius: var(--radius-sm);
  background: var(--surface);
  margin-top: .5rem;
}
.ig-figure-caption { margin-top: 1.1rem; font-size: .88rem; line-height: 1.65; color: var(--text-muted); }
.ig-figure-caption b { color: var(--text); }

@media (max-width: 760px) {
  .ig-figure { padding: 1.2rem 1.1rem; }
  .ig-figdeck-nav {
    display: flex; flex: none; width: 100%; max-width: 100%; box-sizing: border-box;
    overflow-x: auto; flex-wrap: nowrap; padding: .3rem;
  }
  .ig-figdeck-tab { flex-shrink: 0; }
}