:root {
  color-scheme: dark;
  --ink: #f4f7fb;
  --muted: #aab4c0;
  --line: #34404e;
  --paper: #0e141b;
  --panel: #18212b;
  --panel-soft: #202b37;
  --blue: #8bc2ff;
  --blue-strong: #1678df;
  --amber: #ffd77a;
  --green: #78dba8;
  --red: #ff9a92;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% -12%, rgba(34, 109, 182, 0.22), transparent 35rem),
    var(--paper);
}

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

.wrap {
  width: min(940px, calc(100vw - 32px));
  margin: 0 auto;
}

.wrap.wide { width: min(1240px, calc(100vw - 32px)); }

header {
  border-bottom: 1px solid var(--line);
  background: rgba(14, 20, 27, 0.94);
}

header .wrap { padding: 56px 0 38px; }

.eyebrow {
  margin: 0 0 11px;
  color: var(--amber);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(34px, 7vw, 60px);
  line-height: 1;
  letter-spacing: -0.045em;
}

.lede {
  max-width: 720px;
  margin: 20px 0 0;
  color: #c7d0db;
  font-size: 18px;
  line-height: 1.6;
}

main { padding: 28px 0 58px; }

.warning, .card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(24, 33, 43, 0.95);
}

.warning {
  padding: 17px 19px;
  border-color: #765f2b;
  color: #ffe9b1;
  background: #332b18;
  line-height: 1.55;
}

.warning strong { color: #fff6dc; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 26px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 17px;
  border: 1px solid #4a596a;
  border-radius: 9px;
  color: var(--ink);
  background: var(--panel-soft);
  font-weight: 720;
  text-decoration: none;
}

.button.primary {
  border-color: var(--blue-strong);
  background: var(--blue-strong);
}

.button.compact {
  min-height: 34px;
  padding: 0 12px;
  font-size: 13px;
  cursor: pointer;
}

.button:disabled {
  opacity: 0.58;
  cursor: wait;
}

.version-tracker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: -10px 0 26px;
  color: var(--muted);
  font-size: 13px;
}

.version-label {
  color: var(--green);
  font-weight: 750;
}

.version-status {
  min-height: 1.3em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 0 0 26px;
}

.stat { padding: 17px; }

.stat strong {
  display: block;
  margin-bottom: 3px;
  font-size: 25px;
}

.stat span {
  color: var(--muted);
  font-size: 13px;
}

.card {
  margin-top: 14px;
  padding: 20px;
}

h2 {
  margin: 0 0 11px;
  font-size: 20px;
}

h3 {
  margin: 24px 0 9px;
  font-size: 16px;
}

p, li {
  color: #c4ced9;
  line-height: 1.62;
}

li + li { margin-top: 7px; }

.status {
  display: inline-flex;
  padding: 4px 9px;
  border: 1px solid #765f2b;
  border-radius: 999px;
  color: var(--amber);
  background: #332b18;
  font-size: 12px;
  font-weight: 750;
}

.good { color: var(--green); }
.stop { color: var(--red); }

footer {
  padding: 24px 0 38px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

code {
  padding: 2px 5px;
  border-radius: 5px;
  color: #dbe9f8;
  background: #111820;
}

.flow-shell, .recreation-shell {
  margin: 26px 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(28, 39, 52, .98), rgba(9, 14, 20, .98));
  box-shadow: 0 28px 70px rgba(0, 0, 0, .34);
}

.flow-heading, .section-heading, .flow-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.flow-heading { padding: 22px 24px 0; }
.flow-heading h2, .section-heading h2 { margin-bottom: 0; }
.flow-position { color: var(--muted); font-variant-numeric: tabular-nums; }

.cover-flow {
  position: relative;
  height: clamp(310px, 44vw, 520px);
  margin: 4px 0 0;
  overflow: hidden;
  perspective: 1100px;
  outline: none;
}

.cover-flow::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 32%;
  background: linear-gradient(transparent, rgba(8, 13, 19, .72));
  content: "";
  pointer-events: none;
}

.flow-card {
  --offset: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  width: clamp(250px, 46vw, 620px);
  aspect-ratio: 16 / 10;
  padding: 0;
  overflow: hidden;
  border: 1px solid #586778;
  border-radius: 13px;
  background: #090d12;
  box-shadow: 0 22px 60px rgba(0, 0, 0, .54);
  opacity: max(.15, calc(1 - var(--distance) * .28));
  transform: translate(calc(-50% + var(--offset) * 46%), -50%) rotateY(calc(var(--offset) * -43deg)) scale(calc(1 - var(--distance) * .13));
  transform-origin: center;
  transition: transform .46s cubic-bezier(.2,.75,.2,1), opacity .35s, filter .35s;
  filter: brightness(calc(1 - var(--distance) * .18));
  cursor: pointer;
}

.flow-card[aria-hidden="true"] { visibility: hidden; }
.flow-card.active { z-index: 5; border-color: #91c8ff; }
.flow-card img { width: 100%; height: 100%; object-fit: cover; display: block; }
.flow-card span { position: absolute; top: 12px; left: 12px; padding: 5px 10px; border-radius: 99px; color: #fff; background: rgba(6, 10, 14, .8); font-size: 12px; font-weight: 800; text-transform: uppercase; }
.flow-card:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }

.flow-controls { display: grid; grid-template-columns: 46px 1fr 46px; align-items: center; gap: 14px; padding: 0 24px; }
.flow-button { width: 44px; height: 44px; border: 1px solid #4a596a; border-radius: 50%; color: var(--ink); background: var(--panel-soft); font-size: 21px; cursor: pointer; }
.flow-scrubber, #sceneScrubber { width: 100%; accent-color: var(--blue-strong); }
.flow-meta { padding: 22px 24px 28px; }
.flow-meta h3 { margin: 6px 0; font-size: clamp(22px, 4vw, 34px); }
.flow-meta p { max-width: 760px; margin: 4px 0; }
.flow-date { color: var(--amber) !important; font-size: 13px; font-weight: 750; }
.media-badge { display: inline-flex; padding: 4px 9px; border: 1px solid #386d9b; border-radius: 999px; color: var(--blue); background: #14283a; font-size: 11px; font-weight: 800; text-transform: uppercase; }

.chip-row, .scene-toolbar { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { min-height: 36px; padding: 0 13px; border: 1px solid #4a596a; border-radius: 999px; color: var(--ink); background: #202b37; font: inherit; font-size: 13px; font-weight: 700; cursor: pointer; }
.chip.active, .chip[aria-pressed="true"] { border-color: var(--blue-strong); background: #154d83; }
.timeline-list { position: relative; margin-top: 22px; }
.timeline-list::before { position: absolute; top: 10px; bottom: 10px; left: 174px; width: 1px; background: var(--line); content: ""; }
.timeline-entry { display: grid; grid-template-columns: 150px 20px 1fr; gap: 14px; width: 100%; padding: 13px 6px; border: 0; color: inherit; background: transparent; text-align: left; cursor: pointer; }
.timeline-entry time { color: var(--muted); font-size: 13px; text-align: right; }
.timeline-dot { z-index: 1; width: 11px; height: 11px; margin: 4px auto 0; border: 2px solid var(--panel); border-radius: 50%; background: #647487; box-shadow: 0 0 0 1px var(--line); }
.timeline-entry strong, .timeline-entry small { display: block; }
.timeline-entry small { margin-top: 4px; color: var(--muted); }
.timeline-entry.active { border-radius: 9px; background: rgba(48, 111, 171, .16); }
.timeline-entry.active .timeline-dot { background: var(--blue); box-shadow: 0 0 0 3px rgba(139,194,255,.25); }

.scene-toolbar { padding: 14px; border-bottom: 1px solid var(--line); }
.scene-viewport { position: relative; height: min(72vh, 760px); min-height: 470px; overflow: hidden; background: #070b10; touch-action: none; }
.scene-viewport canvas { display: block; width: 100%; height: 100%; }
.scene-loading { position: absolute; inset: 0; z-index: 5; display: grid; place-items: center; color: var(--muted); background: #070b10; }
.scene-label { position: absolute; top: 0; left: 0; z-index: 3; padding: 5px 8px; border: 1px solid var(--blue); border-radius: 6px; color: #eef7ff; background: rgba(7, 11, 16, .82); font-size: 11px; font-weight: 750; white-space: nowrap; pointer-events: none; transition: opacity .15s; }
.playback-panel { display: grid; grid-template-columns: auto 1fr minmax(170px, auto); align-items: center; gap: 16px; padding: 15px; border-top: 1px solid var(--line); }
.playback-panel output { color: var(--amber); font-size: 13px; font-weight: 700; text-align: right; }
.scene-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 14px; }
.scene-grid .card { margin-top: 0; }
.fact-list { display: grid; gap: 10px; margin: 20px 0 0; }
.fact-list div { display: grid; grid-template-columns: 150px 1fr; gap: 12px; padding-top: 10px; border-top: 1px solid var(--line); }
.fact-list dt { color: var(--muted); }
.fact-list dd { margin: 0; color: var(--ink); font-weight: 700; }
.evidence-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.evidence-grid div { padding: 16px; border: 1px solid var(--line); border-radius: 10px; background: #121a23; }
.evidence-grid p { margin-bottom: 0; }
.source-note { color: var(--muted); font-size: 13px; }
.source-panel { border-color: #3f6381; background: linear-gradient(145deg, rgba(24,42,58,.96), rgba(18,27,37,.96)); }
.source-columns { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.source-columns > div { padding: 16px; border: 1px solid var(--line); border-radius: 10px; background: rgba(9,15,22,.36); }
.source-columns ul { margin-bottom: 0; padding-left: 20px; }

@media (max-width: 720px) {
  header .wrap { padding: 38px 0 28px; }
  .grid { grid-template-columns: 1fr; }
  .actions { display: grid; }
  .flow-heading, .section-heading, .flow-meta { align-items: flex-start; flex-direction: column; gap: 10px; }
  .flow-meta .button { width: 100%; }
  .timeline-list::before { left: 12px; }
  .timeline-entry { grid-template-columns: 20px 1fr; }
  .timeline-entry time { grid-column: 2; grid-row: 1; text-align: left; }
  .timeline-dot { grid-column: 1; grid-row: 1 / 3; }
  .timeline-entry > span:last-child { grid-column: 2; }
  .playback-panel { grid-template-columns: 1fr; }
  .playback-panel output { text-align: left; }
  .scene-grid, .evidence-grid { grid-template-columns: 1fr; }
  .source-columns { grid-template-columns: 1fr; }
  .scene-viewport { min-height: 430px; }
  .fact-list div { grid-template-columns: 1fr; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  .flow-card { transition: none; }
}