:root {
  color-scheme: light;
  --ink: #241c16;
  --muted: #6f6458;
  --line: #e4d8c8;
  --paper: #f4efe6;
  --card: #fffaf3;
  --sidebar: #2a211b;
  --sidebar-ink: #f6efe4;
  --sidebar-muted: #cbbba8;
  --sidebar-line: rgba(255, 244, 230, 0.12);
  --accent: #c4522a;
  --accent-deep: #8d3418;
  --teal: #1f6a62;
  --shadow: 0 10px 30px rgba(48, 32, 18, 0.08);
  --sans: "Segoe UI", "Helvetica Neue", sans-serif;
  --serif: Palatino, "Palatino Linotype", "Iowan Old Style", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

#app,
.app {
  height: 100%;
}

.module-help {
  max-width: 40rem;
  margin: 48px auto;
  padding: 0 20px;
  line-height: 1.5;
}

.app {
  display: grid;
  grid-template-columns: 332px minmax(0, 1fr);
  min-height: 100%;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 28px 22px 20px;
  background:
    radial-gradient(1200px 400px at -10% -20%, rgba(196, 82, 42, 0.28), transparent 50%),
    var(--sidebar);
  color: var(--sidebar-ink);
  overflow: auto;
}

.brand {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.mark {
  flex: none;
  width: 42px;
  height: 42px;
}

.eyebrow {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
}

.sidebar h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 0.95;
}

.lede {
  margin: 8px 0 0;
  color: var(--sidebar-muted);
  font-size: 14px;
  line-height: 1.45;
}

.panel h2 {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sidebar-muted);
}

.choices,
.strategies {
  display: grid;
  gap: 6px;
}

.choices {
  grid-template-columns: 1fr 1fr;
}

.choice,
.strategy {
  border: 1px solid var(--sidebar-line);
  background: rgba(255, 250, 243, 0.04);
  border-radius: 10px;
  text-align: left;
}

.choice {
  padding: 8px 10px;
}

.choice strong,
.strategy strong {
  display: block;
  font-size: 13px;
  font-weight: 650;
}

.choice span,
.strategy span {
  display: block;
  margin-top: 2px;
  color: var(--sidebar-muted);
  font-size: 12px;
  line-height: 1.35;
}

.strategy {
  padding: 9px 12px 9px 14px;
}

.choice[aria-pressed="true"],
.strategy[aria-pressed="true"] {
  background: rgba(255, 250, 243, 0.1);
  border-color: rgba(196, 82, 42, 0.85);
  box-shadow: inset 3px 0 0 var(--accent);
}

.toggle {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.35;
}

.toggle input {
  margin-top: 2px;
  accent-color: var(--accent);
}

.slider {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  align-items: center;
  font-size: 13px;
}

.slider input {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--accent);
}

.choice:hover,
.strategy:hover {
  background: rgba(255, 250, 243, 0.1);
}

.footnote {
  margin-top: auto;
  color: var(--sidebar-muted);
  font-size: 12px;
  line-height: 1.45;
}

.stage-wrap {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.45), transparent 90px),
    var(--paper);
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.blurb {
  margin: 0;
  max-width: 640px;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.35;
}

.toolbar-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.stats {
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.chart-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chart-actions button {
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font-size: 13px;
}

.chart-actions button:hover {
  background: #f3e7d8;
}

.zoom {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  overflow: hidden;
}

.zoom button {
  width: 32px;
  height: 32px;
  border: 0;
  background: transparent;
}

.zoom button:hover {
  background: #f3e7d8;
}

.zoom span {
  min-width: 48px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}

.legend {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.swatch {
  width: 22px;
  height: 0;
  border-top: 2px solid #8d8174;
  display: inline-block;
  margin-right: 6px;
  vertical-align: middle;
}

.swatch.dashed {
  border-top-style: dashed;
  border-top-color: var(--accent);
}

.viewport {
  position: relative;
  min-height: 0;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.viewport.is-panning {
  cursor: grabbing;
}

.viewport.is-ready .stage {
  visibility: visible;
}

.stage {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: 0 0;
  visibility: hidden;
}

.wires {
  position: absolute;
  left: 0;
  top: 0;
  overflow: visible;
  pointer-events: none;
}

.wire {
  stroke: #8d8174;
  stroke-width: 1.5;
  stroke-linecap: square;
}

.wire-assistant {
  stroke: var(--accent);
  stroke-dasharray: 4 4;
}

.card {
  position: absolute;
  width: 196px;
  user-select: none;
  margin: 0;
  padding: 12px 14px 16px;
  border: 1px solid #e5d9c9;
  border-left: 4px solid var(--ink);
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow);
  text-align: left;
  color: var(--ink);
}

.card:hover {
  border-color: #d8c6b0;
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.card.depth-2 {
  border-left-color: var(--accent);
}

.card.depth-3 {
  border-left-color: var(--teal);
}

.card.depth-4 {
  border-left-color: #8a6a2f;
}

.card.is-assistant {
  background:
    linear-gradient(90deg, rgba(196, 82, 42, 0.08), transparent 42%),
    var(--card);
}

.card.is-hidden {
  display: none;
}

.kicker,
.badge,
.strategy-tag {
  display: block;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.badge[hidden],
.strategy-tag[hidden],
.fold[hidden] {
  display: none;
}

.name {
  display: block;
  margin-top: 3px;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.15;
}

.title {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.3;
  color: #4e453c;
}

.badge {
  margin-top: 8px;
  color: var(--accent-deep);
}

.card.show-strategy .strategy-tag {
  margin-top: 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fold {
  position: absolute;
  left: 50%;
  bottom: -11px;
  transform: translateX(-50%);
  display: inline-flex;
  gap: 4px;
  align-items: center;
  height: 22px;
  padding: 0 7px;
  border: 1px solid #ddcbb8;
  border-radius: 999px;
  background: #fff;
  color: var(--accent-deep);
  font-size: 11px;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(48, 32, 18, 0.08);
}

.fold i {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--accent);
}

.card.is-collapsed .fold i {
  border-top: 0;
  border-bottom: 5px solid var(--accent);
}

.error {
  margin: 12px 18px 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: #f8e4dc;
  color: var(--accent-deep);
  font-size: 13px;
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(180px, 46vh) minmax(0, 1fr);
  }

  .sidebar {
    gap: 14px;
    padding: 16px;
  }

  .sidebar h1 {
    font-size: 24px;
  }

  .lede,
  .footnote {
    display: none;
  }
}