/* Criterionyx - Dynamic Illustration
   "Turning epidemiological data into evidence" - self-playing explainer. */

:root {
  --font-display: "Poppins", "Hanken Grotesk", system-ui, sans-serif;
  --paper: #f5f7fa;
  --surface: #ffffff;
  --surface-2: #f2f5fb;
  --ink: #0a1d3d;
  --muted: #56607a;
  --faint: #8891a8;
  --line: #e3e8f1;
  --line-strong: #cbd4e3;
  --accent: #2d6fd2;
  --accent-soft: color-mix(in srgb, var(--accent) 12%, transparent);
  --signal: #e53935;
  --signal-soft: color-mix(in srgb, var(--signal) 14%, transparent);
  --gold: #d4a017;
  --shadow: 0 1px 2px rgba(20,24,34,.04), 0 10px 36px -14px rgba(20,24,34,.16);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Hanken Grotesk", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.mono { font-family: "IBM Plex Mono", ui-monospace, monospace; }

.frame { width: 100%; max-width: 1180px; margin: 0 auto; padding: clamp(28px, 4vw, 56px) clamp(20px, 4vw, 56px); }

/* header */
.illo-head { margin-bottom: 22px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 11.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.eyebrow::before { content: ""; width: 24px; height: 1.5px; background: var(--accent); }
.illo-head h1 {
  margin: 0; font-family: var(--font-display); font-size: clamp(28px, 4vw, 44px); line-height: 1.06;
  font-weight: 700; letter-spacing: -.02em; max-width: 780px;
}
.illo-head h1 .em { color: var(--accent); }

/* panel */
.panel {
  display: grid; grid-template-columns: 340px minmax(0, 1fr);
  background: var(--surface); border: 1px solid var(--line); border-radius: 18px;
  box-shadow: var(--shadow); overflow: hidden;
}

/* narrative column */
.narr { padding: 30px 30px 26px; border-right: 1px solid var(--line); display: flex; flex-direction: column; min-height: 460px; }
.narr-stage-no { font-family: "IBM Plex Mono", monospace; font-size: 13px; color: var(--faint); font-weight: 600; letter-spacing: .04em; }
.narr-stage-no b { color: var(--accent); }
.narr-title { margin: 12px 0 14px; font-family: var(--font-display); font-size: 25px; font-weight: 700; letter-spacing: -.02em; line-height: 1.12; min-height: 62px; }
.narr-desc { font-size: 15px; line-height: 1.6; color: var(--muted); flex: 0 0 auto; min-height: 120px; }
.narr-key { opacity: 1; }
@media (prefers-reduced-motion: no-preference) { .narr-key { animation: narrIn .55s ease; } }
@keyframes narrIn { from { opacity: .5; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* stage tracker */
.tracker { margin-top: auto; display: flex; flex-direction: column; gap: 2px; }
.track-item {
  display: flex; align-items: center; gap: 12px; padding: 9px 0; cursor: pointer;
  border: 0; background: transparent; font: inherit; text-align: left; color: var(--faint);
}
.track-item:hover { color: var(--ink); }
.track-item:hover .track-label { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
.track-item.on { color: var(--ink); }
.track-no { font-family: "IBM Plex Mono", monospace; font-size: 12px; font-weight: 600; width: 22px; flex: none; }
.track-label { font-size: 13.5px; font-weight: 600; flex: 1; }
.track-bar { height: 2px; background: var(--line); border-radius: 2px; overflow: hidden; flex: none; width: 40px; }
.track-bar .fill { height: 100%; width: 100%; background: var(--accent); transform-origin: left; transform: scaleX(0); }
.track-item.on .track-bar { width: 56px; }
.track-item.on .track-bar .fill.run { animation: trackfill var(--dur) linear forwards; }
.track-item.on .track-bar .fill.paused { transform: scaleX(.4); animation: none; }
.track-item.done .track-bar .fill { transform: scaleX(1); }
@keyframes trackfill { from { transform: scaleX(0); } to { transform: scaleX(1); } }

/* stage canvas */
.stage {
  position: relative; padding: 24px 28px;
  display: flex; flex-direction: column;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 38px,
    var(--surface-2);
  background-blend-mode: normal;
}
.stage-grid-fade { position: absolute; inset: 0; background: linear-gradient(var(--surface-2), transparent 40%); pointer-events: none; }
.stage-cap { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; z-index: 1; }
.stage-cap .lbl { font-family: "IBM Plex Mono", monospace; font-size: 11px; font-weight: 600; letter-spacing: .04em; color: var(--faint); text-transform: uppercase; }
.stage-cap .tag { display: inline-flex; align-items: center; gap: 7px; font-size: 11px; font-weight: 700; color: var(--accent); }
.stage-cap .tag .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.stage-svg-wrap { flex: 1; display: grid; place-items: center; z-index: 1; }
svg.viz { width: 100%; height: auto; display: block; overflow: visible; }
svg.viz text { font-family: "IBM Plex Mono", monospace; fill: var(--faint); }

/* controls bar */
.illo-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; }
.foot-note { font-size: 12px; color: var(--faint); }
.foot-note b { color: var(--muted); font-weight: 600; }
.illo-controls { display: flex; align-items: center; gap: 10px; }
.navbtn { width: 38px; height: 38px; border-radius: 9px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); font-size: 22px; line-height: 1; cursor: pointer; display: grid; place-items: center; padding: 0; transition: border-color .16s ease, background .16s ease; }
.navbtn:hover { border-color: var(--ink); background: var(--surface-2); }
.nav-count { font-family: "IBM Plex Mono", monospace; font-size: 13px; font-weight: 600; color: var(--muted); min-width: 56px; text-align: center; }
.playbtn {
  display: inline-flex; align-items: center; gap: 9px; font: inherit; font-size: 13px; font-weight: 600;
  color: var(--ink); background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: 999px; padding: 8px 16px; cursor: pointer; transition: border-color .16s ease;
}
.playbtn:hover { border-color: var(--ink); }
.playbtn .ic { width: 12px; height: 12px; display: grid; place-items: center; }

/* ---- animation primitives (base = visible end-state; .play replays entrance) ---- */
.draw { stroke-dasharray: 1; stroke-dashoffset: 0; }
.fade-up, .fade-in { opacity: 1; }
.grow-x { transform-box: fill-box; transform-origin: left center; }
.grow-up { transform-box: fill-box; transform-origin: bottom; }
.pop { transform-box: fill-box; transform-origin: center; }
@media (prefers-reduced-motion: no-preference) {
  .viz-host.play .draw { stroke-dashoffset: 1; animation: draw var(--d, 1.5s) var(--delay, 0s) cubic-bezier(.4,0,.2,1) forwards; }
  .viz-host.play .fade-up { opacity: 0; animation: fadeUp .7s var(--delay, .2s) ease forwards; }
  .viz-host.play .fade-in { opacity: 0; animation: fadeIn .8s var(--delay, .3s) ease forwards; }
  .viz-host.play .grow-x { transform: scaleX(0); animation: growX .9s var(--delay, 0s) cubic-bezier(.34,1.2,.64,1) forwards; }
  .viz-host.play .grow-up { transform: scaleY(0); animation: growUp .8s var(--delay, 0s) cubic-bezier(.34,1.2,.64,1) forwards; }
  .viz-host.play .pop { transform: scale(0); animation: pop .55s var(--delay, 1s) cubic-bezier(.34,1.56,.64,1) forwards; }
  .flow { animation: flow 2.2s linear infinite; }
}
@keyframes draw { from { stroke-dashoffset: 1; } to { stroke-dashoffset: 0; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes fadeIn { to { opacity: 1; } }
@keyframes growX { to { transform: scaleX(1); } }
@keyframes growUp { to { transform: scaleY(1); } }
@keyframes pop { to { transform: scale(1); } }
@keyframes flow { from { transform: translateX(0); } to { transform: translateX(46px); } }
@keyframes softpulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }

@media (max-width: 880px) {
  .panel { grid-template-columns: 1fr; }
  .narr { border-right: 0; border-bottom: 1px solid var(--line); min-height: 0; }
  .narr-title, .narr-desc { min-height: 0; }
  .tracker { margin-top: 20px; }
  .stage { min-height: 360px; }
}