/* Worldline — Tufte / AI-2027 Ivory Monograph + 3-Branch Scenario System */

:root,
[data-theme="light"] {
  --bg: #fffff8;
  --tint: #f4f1e6;
  --ink: #111111;
  --sub: #3b3933;
  --muted: #6e6a61;
  --line: #dfdcd2;
  --line-strong: #b9b4a6;
  --prussian: #1e3a8a;
  --oxblood: #991b1b;
  --forest: #166534;
}

[data-theme="dark"] {
  --bg: #0c0c0e;
  --tint: #151519;
  --ink: #f2efe6;
  --sub: #c8c4b8;
  --muted: #8b877c;
  --line: #26262b;
  --line-strong: #414149;
  --prussian: #60a5fa;
  --oxblood: #f87171;
  --forest: #4ade80;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.c-prussian { color: var(--prussian); }
.c-oxblood { color: var(--oxblood); }
.c-forest { color: var(--forest); }

/* --- Sticky Top Horizon Bar --- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: color-mix(in srgb, var(--bg) 93%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.progress-track { width: 100%; height: 2px; }
.progress-fill { height: 100%; width: 0%; background: var(--ink); transition: width 160ms ease; }

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 9px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.brand-sep { color: var(--line-strong); }

.date-rail {
  display: flex;
  align-items: center;
  gap: 3px;
  overflow-x: auto;
  scrollbar-width: none;
}
.date-rail::-webkit-scrollbar { display: none; }

.rail-tick {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
  padding: 4px 7px;
  border-radius: 3px;
  cursor: pointer;
  white-space: nowrap;
}
.rail-tick:hover { color: var(--ink); background: var(--tint); }
.rail-tick.active { color: var(--bg); background: var(--ink); font-weight: 700; }

.top-actions { display: flex; align-items: center; gap: 8px; white-space: nowrap; }

.btn, select, input[type="text"] {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  border-radius: 4px;
  padding: 5px 10px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink);
  cursor: pointer;
}
.btn-sm { padding: 3px 8px; }
.btn-ghost:hover { background: var(--tint); }
.btn-ink { background: var(--ink); color: var(--bg); border-color: var(--ink); font-weight: 600; }
.btn-ink:hover { opacity: 0.86; }

/* --- Page & Masthead --- */
.page { max-width: 1200px; margin: 0 auto; padding: 32px 24px 64px; }

.hero { padding-bottom: 22px; border-bottom: 1px solid var(--line); }

.eyebrow, .col-kicker {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted);
}

.hero h1 {
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin-top: 6px;
}

.deck {
  font-style: italic;
  font-size: clamp(16.5px, 1.9vw, 19.5px);
  color: var(--sub);
  margin-top: 8px;
  max-width: 780px;
}

/* --- 3-Branch Scenario Selector --- */
.branch-bar {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

@media (max-width: 720px) {
  .branch-bar { grid-template-columns: 1fr; }
}

.branch-pill {
  appearance: none;
  text-align: left;
  padding: 10px 13px;
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-left-width: 3px;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}

.branch-pill[data-branch="mainline"] { border-left-color: var(--ink); }
.branch-pill[data-branch="agent_breakthrough"] { border-left-color: var(--prussian); }
.branch-pill[data-branch="credit_crunch"] { border-left-color: var(--forest); }

.branch-pill:hover { background: var(--tint); }
.branch-pill.active {
  background: var(--tint);
  border-color: var(--ink);
}
.branch-pill[data-branch="agent_breakthrough"].active { border-color: var(--prussian); }
.branch-pill[data-branch="credit_crunch"].active { border-color: var(--forest); }

.bp-code {
  display: block;
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  font-weight: 700;
  color: var(--ink);
}
.branch-pill[data-branch="agent_breakthrough"] .bp-code { color: var(--prussian); }
.branch-pill[data-branch="credit_crunch"] .bp-code { color: var(--forest); }

.bp-sub {
  display: block;
  font-size: 13.5px;
  color: var(--sub);
  margin-top: 2px;
}

/* --- KPI Strip --- */
.kpi-strip {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 820px) {
  .kpi-strip { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .date-rail { display: none; }
}

.kpi-val {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: clamp(18px, 2.1vw, 23px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.kpi-lbl {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 2px;
}

.cast-drawer { margin-top: 14px; }
.cast-drawer summary {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  color: var(--muted);
  cursor: pointer;
}
.cast-grid {
  margin-top: 10px;
  padding: 14px;
  background: var(--tint);
  border: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px 18px;
}
.cast-item-title {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  font-weight: 700;
}
.cast-item-desc { font-size: 13.5px; color: var(--sub); margin-top: 2px; line-height: 1.35; }

/* --- 2. Split-Screen Scrollytelling + Sticky HUD --- */
.split-stage {
  margin-top: 26px;
  display: grid;
  grid-template-columns: minmax(300px, 375px) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

@media (max-width: 980px) {
  .split-stage { grid-template-columns: 1fr; gap: 24px; }
  .hud-col { order: -1; position: static !important; }
}

.col-kicker { margin-bottom: 10px; }

.dispatch-list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }

.fork-divider {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--tint);
  border-bottom: 1px solid var(--line-strong);
  padding: 6px 12px;
}

.dispatch-card {
  padding: 15px 0 15px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  cursor: pointer;
  transition: border-color 140ms ease, background 140ms ease;
}
.dispatch-card:hover { background: color-mix(in srgb, var(--tint) 55%, transparent); }
.dispatch-card.active {
  border-left-color: var(--ink);
  background: color-mix(in srgb, var(--tint) 75%, transparent);
  padding-right: 12px;
}
.dispatch-card.active.b-agents { border-left-color: var(--prussian); }
.dispatch-card.active.b-crunch { border-left-color: var(--forest); }

.dispatch-meta {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.dispatch-stamp { font-weight: 700; color: var(--ink); }
.dispatch-title { font-size: 17.5px; font-weight: 700; line-height: 1.22; margin-top: 4px; }
.dispatch-line { font-size: 14.5px; color: var(--sub); line-height: 1.42; margin-top: 4px; }

.receipts-drawer { margin-top: 8px; }
.receipts-drawer summary {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  color: var(--muted);
  cursor: pointer;
}
.receipts-body { margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--line); font-size: 13px; cursor: default; }
.clash-item { color: var(--sub); margin-bottom: 5px; line-height: 1.38; }
.mini-moves { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; }
.move-row { padding-top: 5px; border-top: 1px solid var(--line); line-height: 1.35; }
.move-actor {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
}
.move-pub { color: var(--muted); font-size: 12.5px; }
.move-priv { color: var(--sub); font-size: 12.5px; }

/* --- Sticky Right HUD --- */
.hud-col { position: sticky; top: 56px; }
.hud-panel { border-top: 1.5px solid var(--ink); padding-top: 12px; }
.hud-top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.hud-title-group { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; }
.hud-stamp {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 700;
}
.hud-title { font-size: 19.5px; font-weight: 700; letter-spacing: -0.01em; }
.hud-bottleneck {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}
.hud-arrows { display: flex; gap: 4px; }

.telemetry-grid {
  margin-top: 10px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
}
@media (max-width: 640px) { .telemetry-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.tel-cell {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}
.tel-k { font-size: 10.5px; color: var(--muted); letter-spacing: 0.04em; }
.tel-v { font-size: 13.5px; font-weight: 700; margin-top: 1px; }

.sync-scroll { margin-top: 10px; overflow-x: auto; }
.sync-stage svg { width: 100%; min-width: 620px; height: auto; display: block; user-select: none; }
.sync-hit { cursor: pointer; }
.sync-dot { transform-box: fill-box; transform-origin: center; transition: transform 120ms ease; }
.sync-hit:hover .sync-dot { transform: scale(1.25); }

/* --- 3. Closing Ledger --- */
.ledger-section { margin-top: 40px; padding-top: 24px; border-top: 1.5px solid var(--ink); }
.index-grid {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--sub);
}
.index-row { display: grid; grid-template-columns: 116px 1fr; gap: 12px; align-items: baseline; }
.index-tag {
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.table-scroll { margin-top: 16px; overflow-x: auto; }
.clean-table {
  width: 100%;
  border-collapse: collapse;
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 12.5px;
  font-variant-numeric: tabular-nums;
}
.clean-table th {
  text-align: left;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  padding: 8px 10px;
  border-bottom: 1px solid var(--line-strong);
}
.clean-table td { padding: 9px 10px; border-bottom: 1px solid var(--line); }
.clean-table td:first-child {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: 14.5px;
}
.clean-table em { color: var(--muted); font-style: normal; font-size: 11.5px; }

/* --- Local Frontier & Colophon --- */
.frontier-section { margin-top: 32px; padding: 18px; background: var(--tint); border: 1px solid var(--line-strong); }
.frontier-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; }
.section-title { font-size: 20px; margin-top: 2px; }
.frontier-buttons { display: flex; gap: 8px; }
.steer-details { margin-top: 12px; }
.steer-details summary { font-family: "SF Mono", monospace; font-size: 11.5px; cursor: pointer; color: var(--muted); }
.steer-body { margin-top: 10px; }
.shock-input { width: 100%; margin-bottom: 10px; }
.directives-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px; }
.dir-item label { display: block; font-family: "SF Mono", monospace; font-size: 11px; margin-bottom: 2px; }
.dir-item input { width: 100%; }
.live-box { margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--line); }
.live-pills { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.live-chip { font-family: "SF Mono", monospace; font-size: 11px; padding: 2px 7px; border: 1px solid var(--line-strong); }
.live-chip.done { background: var(--ink); color: var(--bg); }
.colophon {
  margin-top: 28px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  color: var(--muted);
}
.modal-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.5); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: var(--bg); border: 1px solid var(--ink); padding: 20px; width: min(400px, 92vw); }
.modal-actions { margin-top: 14px; display: flex; justify-content: flex-end; gap: 8px; }