:root {
  color-scheme: light;
  --paper: #f4f0e8;
  --paper-deep: #e8e1d4;
  --surface: #fffdf8;
  --surface-strong: #ffffff;
  --ink: #17243a;
  --ink-soft: #596477;
  --ink-faint: #858b94;
  --line: rgba(23, 36, 58, 0.14);
  --line-strong: rgba(23, 36, 58, 0.28);
  --navy: #17243a;
  --blue: #315cdd;
  --blue-bright: #426cf0;
  --blue-soft: #e4eaff;
  --orange: #ef6c42;
  --orange-soft: #fff0e9;
  --gold: #dfa83b;
  --green: #17806c;
  --red: #bc3d46;
  --shadow: 0 18px 45px rgba(42, 35, 24, 0.08), 0 2px 8px rgba(42, 35, 24, 0.05);
  --radius-lg: 22px;
  --radius-md: 14px;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  min-width: 320px;
  background: var(--paper);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 6% 4%, rgba(239, 108, 66, 0.075), transparent 27rem),
    radial-gradient(circle at 95% 80%, rgba(49, 92, 221, 0.06), transparent 32rem),
    var(--paper);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

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

button,
select,
input[type="range"],
summary {
  cursor: pointer;
}

button:focus-visible,
select:focus-visible,
textarea:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(66, 108, 240, 0.34);
  outline-offset: 2px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1.2;
  text-transform: uppercase;
}

.topbar {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(280px, 480px) minmax(240px, 1fr);
  align-items: center;
  min-height: 78px;
  padding: 13px clamp(18px, 3vw, 46px);
  border-bottom: 1px solid var(--line);
  background: rgba(244, 240, 232, 0.9);
  backdrop-filter: blur(15px);
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 16px;
  letter-spacing: -0.015em;
}

.brand small {
  margin-top: 1px;
  color: var(--ink-soft);
  font-size: 11px;
}

.brand-mark {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 9px);
  grid-template-rows: repeat(2, 9px);
  gap: 3px;
  width: 32px;
  height: 32px;
  padding: 4px;
  border-radius: 9px;
  background: var(--navy);
  box-shadow: 0 5px 12px rgba(23, 36, 58, 0.18);
  transform: rotate(4deg);
}

.brand-mark i {
  border-radius: 50%;
  background: #f7f3e9;
}

.brand-mark i:nth-child(2),
.brand-mark i:nth-child(3) {
  background: var(--orange);
}

.scenario-picker {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 5px 7px 5px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 253, 248, 0.86);
}

.scenario-picker label {
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.scenario-picker select {
  min-width: 0;
  height: 34px;
  padding: 0 32px 0 10px;
  border: 0;
  border-left: 1px solid var(--line);
  background: transparent;
  font-size: 13px;
  font-weight: 700;
}

.header-actions {
  display: flex;
  justify-self: end;
  gap: 8px;
}

.button,
.icon-button {
  min-height: 40px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-weight: 750;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

.button:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.button:active,
.icon-button:active {
  transform: translateY(0);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 15px;
}

.button-primary {
  color: white;
  background: var(--navy);
  box-shadow: 0 6px 14px rgba(23, 36, 58, 0.18);
}

.button-primary:hover {
  background: #243550;
}

.button-accent {
  color: white;
  background: var(--blue);
  box-shadow: 0 7px 16px rgba(49, 92, 221, 0.22);
}

.button-accent:hover {
  background: var(--blue-bright);
}

.button-quiet {
  border-color: var(--line);
  background: rgba(255, 253, 248, 0.68);
}

.button-quiet:hover {
  border-color: var(--line-strong);
  background: var(--surface-strong);
}

.mobile-tabs {
  display: none;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(360px, 0.88fr);
  gap: clamp(14px, 1.5vw, 24px);
  width: min(1760px, calc(100% - clamp(22px, 4vw, 64px)));
  margin: clamp(16px, 2vw, 28px) auto 38px;
  align-items: start;
}

.simulator-card,
.editor-card {
  min-width: 0;
  border: 1px solid rgba(23, 36, 58, 0.11);
  border-radius: var(--radius-lg);
  background: rgba(255, 253, 248, 0.93);
  box-shadow: var(--shadow);
}

.simulator-card {
  overflow: hidden;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 21px 24px 17px;
}

.section-heading h1 {
  margin: 0;
  font-size: clamp(18px, 1.45vw, 24px);
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.seed-control {
  display: grid;
  grid-template-columns: auto auto auto;
  align-items: center;
  gap: 8px;
  flex: none;
  min-height: 38px;
  padding: 4px 5px 4px 11px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
}

.seed-control span {
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.seed-control strong {
  min-width: 34px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.seed-control button {
  height: 28px;
  padding: 0 9px;
  border: 0;
  border-radius: 6px;
  color: var(--blue);
  background: var(--blue-soft);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.canvas-shell {
  position: relative;
  min-height: 390px;
  height: clamp(410px, 53vh, 680px);
  margin: 0 14px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 17px;
  background: #17243a;
  box-shadow: inset 0 0 0 1px rgba(10, 17, 29, 0.3), 0 10px 24px rgba(23, 36, 58, 0.18);
}

#world-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.canvas-topline {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.status-pill,
.tick-pill,
.delay-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.82);
  background: rgba(10, 18, 31, 0.54);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(8px);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.canvas-badges {
  display: flex;
  gap: 6px;
}

.delay-pill {
  color: #cbd7ff;
  border-color: rgba(145, 169, 255, 0.22);
  background: rgba(49, 92, 221, 0.2);
}

.status-pill i {
  width: 6px;
  height: 6px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(223, 168, 59, 0.12);
}

.status-pill.is-running i {
  background: #5ad3b2;
  box-shadow: 0 0 0 3px rgba(90, 211, 178, 0.14);
}

.tick-pill strong {
  margin-left: 4px;
  color: white;
  font-family: var(--font-mono);
}

.canvas-instruction {
  position: absolute;
  left: 16px;
  bottom: 12px;
  max-width: calc(100% - 220px);
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 10px;
  letter-spacing: 0.015em;
  pointer-events: none;
}

.canvas-legend {
  position: absolute;
  right: 14px;
  bottom: 11px;
  display: flex;
  gap: 11px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 9px;
  pointer-events: none;
}

.canvas-legend span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.canvas-legend i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.legend-self { background: var(--orange); }
.legend-a { background: #92a9ff; }
.legend-b { background: #f2c35d; }
.legend-c {
  border: 1px solid #ff8364;
  background: transparent;
}

body[data-scenario="desire-paths"] .legend-a { background: #70d6b5; }
body[data-scenario="desire-paths"] .legend-b { background: #f5b852; }

body[data-scenario="territory-growth"] .legend-self {
  border-radius: 1px;
  background: linear-gradient(90deg, rgba(112, 214, 181, 0.22) 0 45%, #31445a 45% 100%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
}
body[data-scenario="territory-growth"] .legend-a {
  border-radius: 1px;
  background: repeating-linear-gradient(135deg, #e6af47 0 2px, #544526 2px 4px);
}
body[data-scenario="territory-growth"] .legend-b {
  border-radius: 1px;
  background: linear-gradient(90deg, #70a4f4, #ef9661, #75cda5, #d38bdd);
}

.layout-editor {
  margin: 10px 14px 0;
  padding: 10px 11px;
  border: 1px solid rgba(49, 92, 221, 0.2);
  border-radius: 12px;
  background: linear-gradient(100deg, rgba(228, 234, 255, 0.5), rgba(255, 253, 248, 0.72));
}

.layout-editor-heading,
.layout-editor-controls,
.layout-tool-group,
.grid-options,
.layout-history-controls {
  display: flex;
  align-items: center;
}

.layout-editor-heading {
  justify-content: space-between;
  gap: 14px;
  margin: 0 2px 8px;
}

.layout-editor-heading .eyebrow {
  display: inline;
  margin-right: 7px;
  color: var(--blue);
}

.layout-note {
  color: var(--ink-soft);
  font-size: 9px;
}

.layout-status {
  flex: none;
  max-width: 42%;
  margin: 0;
  overflow: hidden;
  color: var(--green);
  font-size: 9px;
  font-weight: 750;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.layout-status.is-warning {
  color: #9a521a;
}

.layout-editor-controls {
  gap: 9px;
  min-width: 0;
}

.layout-tool-group,
.layout-history-controls {
  gap: 3px;
  flex: none;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
}

.layout-tool,
.layout-action {
  min-height: 30px;
  padding: 0 9px;
  border: 0;
  border-radius: 6px;
  color: var(--ink-soft);
  background: transparent;
  font-size: 9px;
  font-weight: 800;
  white-space: nowrap;
}

.layout-tool:hover,
.layout-action:hover {
  color: var(--ink);
  background: rgba(23, 36, 58, 0.06);
}

.layout-tool.is-active {
  color: white;
  background: var(--blue);
  box-shadow: 0 3px 8px rgba(49, 92, 221, 0.18);
}

.layout-action:disabled {
  background: transparent;
}

.grid-options {
  gap: 5px;
  min-width: 0;
  margin: 0;
  padding: 3px 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.48);
}

.grid-options:disabled {
  opacity: 0.45;
}

.grid-options label {
  color: var(--ink-faint);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.grid-options input {
  width: 43px;
  height: 28px;
  padding: 0 4px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 9px;
  text-align: center;
}

#layout-grid-gap {
  width: 48px;
}

.layout-history-controls {
  margin-left: auto;
}

.gate-editor {
  display: grid;
  grid-template-columns: minmax(145px, 0.52fr) minmax(0, 1.48fr);
  align-items: center;
  gap: 10px;
  margin-top: 9px;
  padding-top: 9px;
  border-top: 1px solid var(--line);
}

.gate-editor-intro strong,
.gate-editor-intro span {
  display: block;
}

.gate-editor-intro strong {
  color: var(--ink);
  font-size: 10px;
}

.gate-editor-intro span {
  margin-top: 2px;
  color: var(--ink-faint);
  font-size: 8px;
  line-height: 1.35;
}

.gate-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(190px, 1fr));
  gap: 5px;
  min-width: 0;
  max-height: 110px;
  overflow: auto;
}

.gate-row {
  display: grid;
  grid-template-columns: 10px minmax(76px, 1fr) 55px auto;
  align-items: end;
  gap: 6px;
  min-width: 0;
  padding: 5px 6px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.58);
}

.gate-marker {
  align-self: center;
  width: 8px;
  height: 8px;
  border: 2px solid #70d6b5;
  border-radius: 50%;
  background: rgba(20, 52, 57, 0.9);
}

.gate-field {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.gate-field > span {
  color: var(--ink-faint);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.gate-field input {
  min-width: 0;
  width: 100%;
  height: 25px;
  padding: 0 6px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--surface);
  font-size: 9px;
}

.gate-weight-field input {
  font-family: var(--font-mono);
  text-align: center;
}

.gate-coordinates {
  align-self: center;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 7px;
  white-space: nowrap;
}

.territory-inspector {
  margin: 10px 14px 0;
  padding: 11px 12px;
  border: 1px solid rgba(91, 77, 168, 0.22);
  border-radius: 12px;
  background: linear-gradient(105deg, rgba(237, 233, 255, 0.58), rgba(255, 253, 248, 0.78));
}

.territory-inspector-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 0.45fr);
  align-items: center;
  gap: 18px;
}

.territory-inspector-heading .eyebrow {
  color: #5b4da8;
}

.territory-inspector-heading > div > span {
  color: var(--ink-soft);
  font-size: 9px;
}

.territory-inspector-heading label {
  display: grid;
  gap: 3px;
  color: var(--ink-faint);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.territory-inspector-heading select {
  width: 100%;
  height: 30px;
  padding: 0 26px 0 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  font-size: 9px;
  text-transform: none;
}

.territory-facts {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 0;
  margin: 10px 0 0;
  padding-top: 9px;
  border-top: 1px solid var(--line);
}

.territory-facts > div {
  min-width: 0;
  padding: 0 9px;
}

.territory-facts > div:first-child {
  padding-left: 0;
}

.territory-facts > div + div {
  border-left: 1px solid var(--line);
}

.territory-facts dt {
  color: var(--ink-faint);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.065em;
  text-transform: uppercase;
}

.territory-facts dd {
  margin: 2px 0 0;
  overflow: hidden;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.territory-policy {
  margin: 8px 0 0;
  color: var(--ink-faint);
  font-size: 8px;
}

.metrics-strip {
  display: grid;
  grid-template-columns: 0.8fr 0.8fr 1.25fr;
  margin: 14px 14px 0;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(244, 240, 232, 0.42);
}

.metric {
  min-width: 0;
  padding: 13px 16px;
}

.metric + .metric {
  border-left: 1px solid var(--line);
}

.metric > span,
.metric > div > span,
.metric strong,
.metric small {
  display: block;
}

.metric > span,
.metric > div > span {
  color: var(--ink-faint);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.metric strong {
  margin: 2px 0 1px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.15;
}

.metric small {
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metric-with-chart {
  display: grid;
  grid-template-columns: minmax(88px, 0.8fr) minmax(90px, 1fr);
  align-items: center;
  gap: 10px;
}

#metric-chart {
  width: 100%;
  height: 42px;
  overflow: visible;
}

.metric .metric-chart-wrap > span {
  display: block;
  margin-bottom: -3px;
  color: var(--ink-faint);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chart-baseline {
  fill: none;
  stroke: rgba(23, 36, 58, 0.12);
  stroke-width: 1;
}

#metric-line {
  fill: none;
  stroke: var(--orange);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.2;
  vector-effect: non-scaling-stroke;
}

body[data-scenario="desire-paths"] #metric-line {
  stroke: #48b995;
}

body[data-scenario="desire-paths"] .metric-with-chart {
  background: linear-gradient(90deg, rgba(112, 214, 181, 0.045), rgba(112, 214, 181, 0.12));
}

body[data-scenario="territory-growth"] #metric-line {
  stroke: #7562d4;
}

body[data-scenario="territory-growth"] .metric-with-chart {
  background: linear-gradient(90deg, rgba(117, 98, 212, 0.045), rgba(117, 98, 212, 0.12));
}

.control-deck {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px 12px;
}

.transport-controls {
  display: flex;
  gap: 6px;
  padding-right: 12px;
  border-right: 1px solid var(--line);
}

#play-button {
  min-width: 86px;
}

.icon-button {
  width: 40px;
  padding: 0;
  border-color: var(--line);
  background: var(--surface);
  font-family: var(--font-mono);
  font-size: 16px;
}

.control-field {
  display: grid;
  gap: 3px;
}

.control-field label {
  color: var(--ink-faint);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.control-field select {
  height: 31px;
  padding: 0 24px 0 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
  font-size: 11px;
  font-weight: 750;
}

.population-field {
  flex: 1;
  min-width: 105px;
}

.population-field label {
  display: flex;
  justify-content: space-between;
}

.population-field output {
  color: var(--ink);
  font-family: var(--font-mono);
}

input[type="range"] {
  width: 100%;
  height: 18px;
  margin: 0;
  accent-color: var(--blue);
}

.toggle-control {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}

.toggle-control input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.toggle-control > span {
  position: relative;
  width: 29px;
  height: 17px;
  border-radius: 999px;
  background: #c7c6c2;
  transition: background 140ms ease;
}

.toggle-control > span::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.22);
  transition: transform 140ms ease;
}

.toggle-control input:checked + span {
  background: var(--blue);
}

.toggle-control input:checked + span::after {
  transform: translateX(12px);
}

.toggle-control input:focus-visible + span {
  outline: 3px solid rgba(66, 108, 240, 0.3);
  outline-offset: 2px;
}

.parameter-deck {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  padding: 0 16px 17px;
}

.parameter-control {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1px 8px;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.5);
}

.parameter-control label {
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 750;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.parameter-control output {
  font-family: var(--font-mono);
  font-size: 10px;
}

.parameter-control input {
  grid-column: 1 / -1;
}

.parameter-select {
  grid-column: 1 / -1;
  width: 100%;
  height: 28px;
  margin-top: 4px;
  padding: 0 25px 0 7px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  font-size: 10px;
  font-weight: 700;
}

.editor-card {
  position: sticky;
  top: 14px;
  overflow: hidden;
}

.lesson-card {
  display: grid;
  grid-template-columns: 43px 1fr;
  gap: 14px;
  padding: 22px 22px 18px;
  border-bottom: 1px solid var(--line);
}

.lesson-number {
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  border-radius: 50%;
  color: var(--orange);
  background: var(--orange-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.lesson-card h2 {
  margin: 0 0 7px;
  font-size: clamp(19px, 1.55vw, 24px);
  letter-spacing: -0.035em;
  line-height: 1.16;
}

.lesson-card p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.55;
}

.rule-explainer {
  padding: 16px 22px 17px;
  border-bottom: 1px solid var(--line);
  background: rgba(244, 240, 232, 0.35);
}

.rule-explainer ol {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 11px 0 13px;
  padding: 0;
  counter-reset: rule-step;
  list-style: none;
}

.rule-explainer li {
  position: relative;
  padding: 26px 9px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.72);
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.35;
  counter-increment: rule-step;
}

.rule-explainer li::before {
  content: "0" counter(rule-step);
  position: absolute;
  top: 7px;
  left: 9px;
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 800;
}

.question-prompt {
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid var(--orange);
  color: var(--ink);
  font-size: 10px;
  font-weight: 650;
  line-height: 1.45;
}

.editor-section {
  padding: 16px 16px 14px;
}

.editor-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 26px;
  padding: 0 5px 8px;
}

.editor-toolbar .eyebrow {
  display: inline-block;
  margin: 0;
}

.language-pill {
  margin-left: 6px;
  padding: 3px 6px;
  border-radius: 5px;
  color: var(--blue);
  background: var(--blue-soft);
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 800;
  text-transform: uppercase;
}

.code-state {
  color: var(--green);
  font-size: 9px;
  font-weight: 750;
}

.code-state.is-dirty {
  color: #a05b15;
}

.code-editor-wrap {
  position: relative;
  display: grid;
  grid-template-columns: 37px minmax(0, 1fr);
  min-height: 270px;
  max-height: 42vh;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 11px;
  background: #101b2d;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.line-numbers {
  padding: 14px 8px 18px 0;
  overflow: hidden;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.25);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.58;
  text-align: right;
  user-select: none;
}

.line-numbers span {
  display: block;
}

#code-editor {
  width: 100%;
  min-height: 270px;
  padding: 14px 14px 18px;
  resize: vertical;
  border: 0;
  outline: 0;
  color: #dce7ff;
  background: transparent;
  caret-color: #f5bd69;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.58;
  tab-size: 2;
  white-space: pre;
}

#code-editor::selection {
  background: rgba(66, 108, 240, 0.43);
}

.diagnostics {
  margin-top: 8px;
  padding: 9px 11px;
  border: 1px solid rgba(188, 61, 70, 0.3);
  border-radius: 8px;
  color: #873039;
  background: #fff0f1;
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.45;
}

.editor-actions {
  display: flex;
  gap: 8px;
  padding-top: 10px;
}

.editor-actions .button-accent {
  flex: 1;
}

kbd {
  padding: 1px 5px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.09);
  font-family: var(--font-mono);
  font-size: 8px;
}

.api-reference {
  border-top: 1px solid var(--line);
}

.api-reference summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 21px;
  font-size: 11px;
  font-weight: 750;
  list-style: none;
}

.api-reference summary::-webkit-details-marker {
  display: none;
}

.api-reference summary i {
  display: inline-grid;
  place-items: center;
  width: 25px;
  height: 25px;
  margin-right: 7px;
  border-radius: 6px;
  color: var(--blue);
  background: var(--blue-soft);
  font-family: var(--font-mono);
  font-size: 8px;
  font-style: normal;
}

.api-reference[open] summary > span:last-child {
  transform: rotate(45deg);
}

.api-content {
  padding: 0 21px 18px;
  color: var(--ink-soft);
  font-size: 10px;
  line-height: 1.5;
}

.api-content p {
  margin: 0 0 10px;
}

.api-content code,
.roadmap-dialog code {
  padding: 1px 4px;
  border-radius: 4px;
  color: var(--blue);
  background: var(--blue-soft);
  font-family: var(--font-mono);
}

.api-content dl {
  display: grid;
  gap: 5px;
  margin: 0 0 11px;
}

.api-content dl div {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) 0.9fr;
  gap: 8px;
}

.api-content dt,
.api-content dd {
  margin: 0;
}

.trust-note {
  padding: 8px;
  border-left: 2px solid var(--gold);
  background: rgba(223, 168, 59, 0.08);
}

.roadmap-dialog {
  width: min(760px, calc(100% - 28px));
  max-height: calc(100vh - 32px);
  padding: 0;
  overflow: auto;
  border: 0;
  border-radius: 22px;
  color: var(--ink);
  background: var(--surface);
  box-shadow: 0 30px 90px rgba(16, 23, 36, 0.35);
}

.roadmap-dialog::backdrop {
  background: rgba(12, 20, 34, 0.66);
  backdrop-filter: blur(5px);
}

.dialog-frame {
  margin: 0;
}

.dialog-frame > header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
  padding: 25px 28px 20px;
  border-bottom: 1px solid var(--line);
}

.dialog-frame h2 {
  margin: 0;
  font-size: 26px;
  letter-spacing: -0.04em;
}

.dialog-close {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  font-size: 23px;
}

.roadmap-intro {
  padding: 20px 28px 8px;
}

.roadmap-intro p {
  margin: 0 0 5px;
  color: var(--ink-soft);
}

.roadmap-intro strong {
  color: var(--blue);
  font-size: 12px;
}

.roadmap-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 15px 28px 22px;
  list-style: none;
}

.roadmap-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.roadmap-list li.is-current {
  border-color: rgba(49, 92, 221, 0.27);
  background: rgba(228, 234, 255, 0.46);
}

.roadmap-list li > span {
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.roadmap-list strong {
  font-size: 13px;
}

.roadmap-list p {
  margin: 2px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.roadmap-list em {
  padding: 4px 7px;
  border-radius: 999px;
  color: var(--ink-faint);
  background: var(--paper);
  font-size: 8px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.roadmap-list .is-current em {
  color: white;
  background: var(--blue);
}

.dialog-frame > footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 28px;
  border-top: 1px solid var(--line);
  background: rgba(244, 240, 232, 0.48);
}

.dialog-frame > footer p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 10px;
}

body.presentation-mode {
  overflow: hidden;
  background: #0f1a2c;
}

.presentation-mode .topbar {
  position: fixed;
  top: 14px;
  left: 18px;
  right: 18px;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  min-height: 58px;
  padding: 8px 10px 8px 15px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 13px;
  color: white;
  background: rgba(15, 26, 44, 0.72);
}

.presentation-mode .brand small,
.presentation-mode .scenario-picker label,
.presentation-mode #roadmap-button {
  display: none;
}

.presentation-mode .scenario-picker {
  width: min(420px, 42vw);
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.07);
}

.presentation-mode .scenario-picker select {
  color: white;
  border: 0;
}

.presentation-mode .scenario-picker option {
  color: var(--ink);
}

.presentation-mode #presentation-button {
  color: white;
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.07);
}

.presentation-mode .workspace {
  display: block;
  width: 100%;
  height: 100vh;
  margin: 0;
}

.presentation-mode .editor-card,
.presentation-mode .section-heading,
.presentation-mode .parameter-deck,
.presentation-mode .layout-editor {
  display: none;
}

.presentation-mode .simulator-card {
  position: relative;
  width: 100%;
  height: 100vh;
  border: 0;
  border-radius: 0;
  background: #0f1a2c;
  box-shadow: none;
}

.presentation-mode .canvas-shell {
  height: 100vh;
  min-height: 100vh;
  margin: 0;
  border: 0;
  border-radius: 0;
}

.presentation-mode .canvas-topline {
  top: 88px;
  left: 30px;
  right: 30px;
}

.presentation-mode .canvas-instruction {
  bottom: 100px;
  left: 30px;
  font-size: 12px;
}

.presentation-mode .canvas-legend {
  right: 30px;
  bottom: 100px;
  font-size: 11px;
}

.presentation-mode .metrics-strip {
  position: fixed;
  z-index: 25;
  right: 280px;
  bottom: 18px;
  left: 18px;
  margin: 0;
  color: white;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(15, 26, 44, 0.79);
  backdrop-filter: blur(12px);
}

.presentation-mode .metric + .metric {
  border-color: rgba(255, 255, 255, 0.12);
}

.presentation-mode .metric > span,
.presentation-mode .metric > div > span,
.presentation-mode .metric small {
  color: rgba(255, 255, 255, 0.62);
}

.presentation-mode .chart-baseline {
  stroke: rgba(255, 255, 255, 0.16);
}

.presentation-mode .control-deck {
  position: fixed;
  z-index: 26;
  right: 18px;
  bottom: 18px;
  width: 244px;
  min-height: 75px;
  padding: 13px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 13px;
  color: white;
  background: rgba(15, 26, 44, 0.79);
  backdrop-filter: blur(12px);
}

.presentation-mode .transport-controls {
  width: 100%;
  padding: 0;
  border: 0;
}

.presentation-mode .transport-controls #play-button {
  flex: 1;
  color: var(--navy);
  background: white;
}

.presentation-mode .icon-button {
  color: white;
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
}

.presentation-mode .control-field,
.presentation-mode .toggle-control {
  display: none;
}

.presentation-mode .territory-inspector {
  display: none;
}

@media (max-width: 1180px) {
  .topbar {
    grid-template-columns: 220px minmax(250px, 1fr) auto;
  }

  .workspace {
    grid-template-columns: minmax(0, 1.4fr) minmax(340px, 0.8fr);
    width: calc(100% - 28px);
  }

  .canvas-shell {
    height: clamp(390px, 48vh, 580px);
  }

  .control-deck {
    flex-wrap: wrap;
  }

  .territory-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    row-gap: 8px;
  }

  .territory-facts > div:nth-child(5) {
    padding-left: 0;
    border-left: 0;
  }

  .layout-editor-controls {
    flex-wrap: wrap;
  }

  .gate-editor {
    grid-template-columns: 1fr;
  }

  .layout-history-controls {
    margin-left: 0;
  }

  .population-field {
    min-width: 150px;
  }

  .parameter-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .topbar {
    grid-template-columns: 1fr minmax(280px, 1fr);
  }

  .header-actions {
    display: none;
  }

  .workspace {
    grid-template-columns: 1fr;
    max-width: 840px;
  }

  .canvas-shell {
    height: clamp(430px, 58vh, 620px);
  }

  .editor-card {
    position: static;
  }

  .code-editor-wrap,
  #code-editor {
    min-height: 310px;
  }
}

@media (max-width: 680px) {
  body {
    background: var(--paper);
  }

  .topbar {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 12px 14px;
  }

  .brand small {
    display: none;
  }

  .scenario-picker {
    width: 100%;
  }

  .mobile-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin: 10px 12px 0;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: rgba(255, 253, 248, 0.72);
  }

  .mobile-tab {
    min-height: 38px;
    border: 0;
    border-radius: 7px;
    color: var(--ink-soft);
    background: transparent;
    font-size: 11px;
    font-weight: 800;
  }

  .mobile-tab.is-active {
    color: white;
    background: var(--navy);
  }

  .workspace {
    display: block;
    width: calc(100% - 24px);
    margin: 10px auto 24px;
  }

  body[data-mobile-tab="playground"] .editor-card,
  body[data-mobile-tab="code"] .simulator-card {
    display: none;
  }

  .simulator-card,
  .editor-card {
    border-radius: 16px;
  }

  .section-heading {
    padding: 17px 15px 13px;
  }

  .section-heading h1 {
    font-size: 18px;
  }

  .seed-control span {
    display: none;
  }

  .seed-control {
    grid-template-columns: auto auto;
  }

  .canvas-shell {
    min-height: 330px;
    height: 54vh;
    margin: 0 8px;
    border-radius: 12px;
  }

  .layout-editor {
    margin: 8px 8px 0;
    padding: 9px;
  }

  .layout-editor-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 3px;
  }

  .layout-status {
    max-width: 100%;
    text-align: left;
  }

  .layout-editor-controls,
  .layout-tool-group,
  .grid-options,
  .layout-history-controls {
    width: 100%;
  }

  .layout-tool,
  .layout-action {
    flex: 1;
    padding: 0 5px;
  }

  .grid-options {
    justify-content: center;
  }

  .gate-list {
    grid-template-columns: 1fr;
    max-height: 145px;
  }

  .canvas-instruction {
    max-width: calc(100% - 30px);
  }

  .canvas-legend {
    display: none;
  }

  body[data-scenario="territory-growth"] .canvas-legend {
    right: 10px;
    bottom: 35px;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    max-width: calc(100% - 20px);
    padding: 4px 6px;
    border-radius: 7px;
    background: rgba(10, 20, 35, 0.62);
  }

  .territory-inspector {
    margin: 8px 8px 0;
    padding: 10px;
  }

  .territory-inspector-heading {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .territory-inspector-heading select {
    min-height: 44px;
  }

  .territory-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 8px;
  }

  .territory-facts > div,
  .territory-facts > div:first-child,
  .territory-facts > div:nth-child(5) {
    padding: 0 7px;
    border-left: 1px solid var(--line);
  }

  .territory-facts > div:nth-child(odd) {
    padding-left: 0;
    border-left: 0;
  }

  .metrics-strip {
    grid-template-columns: 1fr 1fr;
    margin: 8px 8px 0;
  }

  .metric {
    padding: 10px;
  }

  .metric-with-chart {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
    border-left: 0 !important;
  }

  .control-deck {
    gap: 9px;
    padding: 12px 10px 10px;
  }

  .transport-controls {
    flex: 1 0 100%;
    padding: 0 0 10px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .transport-controls #play-button {
    flex: 1;
  }

  .population-field {
    flex: 1;
    min-width: 130px;
  }

  .toggle-control {
    min-height: 30px;
  }

  .parameter-deck {
    grid-template-columns: 1fr;
    padding: 0 10px 12px;
  }

  .lesson-card {
    grid-template-columns: 36px 1fr;
    padding: 18px 15px 15px;
  }

  .lesson-number {
    width: 36px;
    height: 36px;
  }

  .rule-explainer {
    padding: 14px 15px;
  }

  .rule-explainer ol {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .rule-explainer li {
    padding: 8px 8px 8px 35px;
  }

  .rule-explainer li::before {
    top: 9px;
  }

  .editor-section {
    padding: 13px 9px;
  }

  .editor-actions {
    flex-wrap: wrap;
  }

  .editor-actions .button {
    flex: 1 0 150px;
  }

  .dialog-frame > header,
  .roadmap-intro,
  .roadmap-list,
  .dialog-frame > footer {
    padding-right: 18px;
    padding-left: 18px;
  }

  .roadmap-list li {
    grid-template-columns: 27px 1fr;
  }

  .roadmap-list em {
    display: none;
  }

  .dialog-frame > footer {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}