:root {
  --bg: #f4f8fc;
  --text: #1d3448;
  --text-dim: #4e697d;
  --line: #b9ccdc;
  --line-soft: #d1deea;
  --mint: #0a8f72;
  --amber: #9d6100;
  --danger: #a1272b;
  --shell-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(242, 248, 252, 0.96));
  --panel-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(243, 248, 252, 0.98));
  --button-bg: rgba(255, 255, 255, 0.86);
  --chip-bg: rgba(245, 251, 255, 0.9);
  --card-bg: rgba(255, 255, 255, 0.9);
  --edge-bg: rgba(248, 252, 255, 0.95);
  --step-bg: rgba(255, 255, 255, 0.94);
  --panel-muted-bg: rgba(233, 243, 251, 0.62);
  --app-bg:
    radial-gradient(1300px 700px at -10% -20%, #b8d8f0 0%, transparent 58%),
    radial-gradient(1050px 650px at 115% -10%, #f1dfb6 0%, transparent 46%),
    linear-gradient(180deg, #f4f8fc, #e8f0f7);
  --code: #213647;
  --code-highlight: #fff4d8;
  --shadow: 0 18px 36px rgba(33, 57, 78, 0.18);
}

html[data-theme='dark'] {
  --bg: #08121a;
  --text: #ebf4fb;
  --text-dim: #a2b8ca;
  --line: #2b4b62;
  --line-soft: #20394d;
  --mint: #5ff2c2;
  --amber: #ffc775;
  --danger: #ff8c88;
  --shell-bg: linear-gradient(180deg, rgba(22, 47, 66, 0.75), rgba(11, 26, 37, 0.86));
  --panel-bg: linear-gradient(180deg, rgba(17, 35, 49, 0.9), rgba(10, 22, 33, 0.95));
  --button-bg: rgba(8, 18, 26, 0.78);
  --chip-bg: rgba(8, 18, 26, 0.7);
  --card-bg: rgba(14, 29, 41, 0.86);
  --edge-bg: rgba(9, 19, 28, 0.72);
  --step-bg: rgba(14, 29, 41, 0.88);
  --panel-muted-bg: rgba(6, 14, 20, 0.38);
  --app-bg:
    radial-gradient(1300px 700px at -10% -20%, #134769 0%, transparent 58%),
    radial-gradient(1050px 650px at 115% -10%, #5a4f1f 0%, transparent 46%),
    linear-gradient(180deg, #08121a, #050b11);
  --code: #d5e6f2;
  --code-highlight: #2f3f4f;
  --shadow: 0 22px 44px rgba(0, 0, 0, 0.34);
}

@media (prefers-color-scheme: dark) {
  html[data-theme-mode='auto'] {
    --bg: #08121a;
    --text: #ebf4fb;
    --text-dim: #a2b8ca;
    --line: #2b4b62;
    --line-soft: #20394d;
    --mint: #5ff2c2;
    --amber: #ffc775;
    --danger: #ff8c88;
    --shell-bg: linear-gradient(180deg, rgba(22, 47, 66, 0.75), rgba(11, 26, 37, 0.86));
    --panel-bg: linear-gradient(180deg, rgba(17, 35, 49, 0.9), rgba(10, 22, 33, 0.95));
    --button-bg: rgba(8, 18, 26, 0.78);
    --chip-bg: rgba(8, 18, 26, 0.7);
    --card-bg: rgba(14, 29, 41, 0.86);
    --edge-bg: rgba(9, 19, 28, 0.72);
    --step-bg: rgba(14, 29, 41, 0.88);
    --panel-muted-bg: rgba(6, 14, 20, 0.38);
    --app-bg:
      radial-gradient(1300px 700px at -10% -20%, #134769 0%, transparent 58%),
      radial-gradient(1050px 650px at 115% -10%, #5a4f1f 0%, transparent 46%),
      linear-gradient(180deg, #08121a, #050b11);
    --code: #d5e6f2;
    --code-highlight: #2f3f4f;
    --shadow: 0 22px 44px rgba(0, 0, 0, 0.34);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  color: var(--text);
  font-family: 'Aptos', 'Segoe UI', 'Trebuchet MS', sans-serif;
  background: var(--app-bg);
}

.map-app {
  max-width: 1320px;
  margin: 0 auto;
  padding: 18px 16px 28px;
}

.shell {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--shell-bg);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 16px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(95, 242, 194, 0.2), transparent 67%);
  pointer-events: none;
}

.kicker {
  margin: 0;
  color: var(--mint);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  font-weight: 700;
}

.hero h1 {
  margin: 5px 0 8px;
  font-size: clamp(1.3rem, 2.5vw, 2.08rem);
  line-height: 1.15;
}

.subtitle {
  margin: 0;
  max-width: 70ch;
  color: var(--text-dim);
}

.legend {
  margin: 0;
  display: grid;
  align-content: center;
  gap: 8px;
  min-width: 290px;
}

.legend div {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
}

.legend dt,
.legend dd {
  margin: 0;
}

.legend dd {
  color: var(--text-dim);
  font-size: 0.86rem;
}

.controls {
  margin-top: 12px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.controls-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.theme-toggle {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--button-bg);
  color: var(--text);
  padding: 8px 12px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: 140ms ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: rgba(95, 242, 194, 0.75);
  transform: translateY(-1px);
}

.tabs {
  display: flex;
  gap: 8px;
}

.tab {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--button-bg);
  color: var(--text);
  padding: 8px 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: 140ms ease;
}

.tab:hover {
  border-color: #4e7591;
  transform: translateY(-1px);
}

.tab--active {
  border-color: rgba(95, 242, 194, 0.8);
  background: linear-gradient(135deg, rgba(95, 242, 194, 0.22), rgba(255, 199, 117, 0.14));
}

.counts {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: 4px 10px;
  background: var(--chip-bg);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(0, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.canvas,
.inspector {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  min-height: 68vh;
}

.canvas {
  padding: 14px;
}

.inspector {
  padding: 14px;
  position: sticky;
  top: 8px;
  align-self: start;
  max-height: calc(100vh - 24px);
  overflow: auto;
}

.inspector h2 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.inspector h3 {
  margin: 13px 0 7px;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mint);
}

.meta-block {
  margin-bottom: 12px;
  padding: 10px;
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: var(--panel-muted-bg);
}

.meta-line {
  margin: 2px 0;
  color: var(--text-dim);
  font-size: 0.8rem;
}

.group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
}

.group {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: var(--panel-muted-bg);
  overflow: hidden;
}

.group header {
  padding: 10px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--mint);
  font-size: 0.87rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.group-body {
  padding: 9px;
  display: grid;
  gap: 8px;
}

.card,
.edge,
.step {
  width: 100%;
  text-align: left;
  cursor: pointer;
  color: var(--text);
}

.card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px;
  background: var(--card-bg);
  transition: 150ms ease;
}

.card:hover,
.card:focus-visible {
  border-color: rgba(95, 242, 194, 0.65);
  transform: translateY(-1px);
}

.card.is-active,
.edge.is-active,
.step.is-active {
  border-color: var(--amber);
  box-shadow: 0 0 0 1px rgba(255, 199, 117, 0.55);
}

.card h3,
.step h3 {
  margin: 0 0 5px;
  font-size: 0.93rem;
}

.card p,
.step p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.86rem;
}

.edges {
  margin-top: 12px;
  border-top: 1px solid var(--line-soft);
  padding-top: 10px;
}

.edges h3 {
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: var(--amber);
}

.edge {
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 8px;
  margin-bottom: 8px;
  background: var(--edge-bg);
  transition: 140ms ease;
}

.edge:hover,
.edge:focus-visible {
  border-color: rgba(255, 199, 117, 0.82);
}

.step {
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 10px;
  margin-bottom: 8px;
  background: var(--step-bg);
  transition: 140ms ease;
}

.step:hover,
.step:focus-visible {
  border-color: rgba(95, 242, 194, 0.74);
}

.step-stage {
  color: var(--amber);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.74rem;
  margin-bottom: 3px;
}

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid #4b6a80;
  border-radius: 999px;
  padding: 2px 8px;
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.badge--exact {
  border-color: rgba(95, 242, 194, 0.72);
  color: #9bffe0;
}

.badge--inferred {
  border-color: rgba(255, 199, 117, 0.72);
  color: #ffe1ae;
}

html[data-theme='light'] .badge--exact {
  color: #0a8f72;
}

html[data-theme='light'] .badge--inferred {
  color: #9d6100;
}

.list {
  margin: 8px 0;
  padding-left: 18px;
  color: var(--text-dim);
}

.list li {
  margin: 4px 0;
}

.ref {
  margin-top: 4px;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 0.79rem;
  color: var(--text);
}

.ref-link {
  margin-top: 4px;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: var(--button-bg);
  color: inherit;
  font: inherit;
  text-align: left;
  padding: 6px 8px;
  width: 100%;
  cursor: pointer;
}

.ref-link:hover,
.ref-link:focus-visible {
  border-color: rgba(95, 242, 194, 0.75);
}

.code-popup-backdrop {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(2, 7, 12, 0.55);
  padding: 18px;
  z-index: 100;
}

.code-popup {
  width: min(980px, 100%);
  max-height: calc(100vh - 36px);
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr;
}

.code-popup-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid var(--line-soft);
  padding: 10px 12px;
}

.code-popup-head h2 {
  margin: 0;
  font-size: 0.95rem;
}

.code-popup-close {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--button-bg);
  color: var(--text);
  padding: 6px 10px;
  cursor: pointer;
}

.code-popup-body {
  margin: 0;
  padding: 12px;
  overflow: auto;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 0.84rem;
  line-height: 1.52;
  color: var(--code);
}

.code-line {
  display: block;
  white-space: pre;
}

.code-line.is-highlight {
  background: var(--code-highlight);
}

.code-line-number {
  display: inline-block;
  width: 4ch;
  margin-right: 10px;
  color: var(--text-dim);
  text-align: right;
  user-select: none;
}

.muted {
  color: var(--text-dim);
}

.danger {
  color: var(--danger);
}

code {
  color: var(--text);
}

[hidden] {
  display: none !important;
}

@media (max-width: 1050px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .legend {
    min-width: 0;
  }

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

  .inspector {
    position: static;
    max-height: none;
    min-height: auto;
  }

  .canvas {
    min-height: auto;
  }
}