@font-face {
  font-family: "Archivo";
  src: url("/fonts/archivo-var-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/plex-mono-400-latin.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/plex-mono-600-latin.woff2") format("woff2");
  font-weight: 500 600;
  font-display: swap;
}
[hidden] { display: none !important; }
body { margin: 0; }
/* Layout: full-bleed 3D model table, one floating legend sheet top-left, tooltip follows the pointer */
:root {
  --sky: #dfe6ec;
  --ground: #d9d6cf;
  --road: #a9adb1;
  --path: #c6c3bb;
  --park: #a9c48f;
  --water: #8fb3cc;
  --edge: #2a2f33;
  --lit: 1;
  --bld-lo: #f4f5f3;
  --bld-hi: #3f8f7f;
  --src-m: #3f8f7f;
  --src-f: #c9a24a;
  --src-e: #b9bfc4;
  --sheet: rgba(250, 251, 251, 0.92);
  --ink: #1d2428;
  --muted: #5d6870;
  --rule: #c7cfd4;
  --accent: #2f7b6c;
  --f-display: "Archivo", "Arial Narrow", sans-serif;
  --f-body: "Archivo", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) {
  --sky: #0f1417; --ground: #1d2226; --road: #2e353a; --path: #262c30; --park: #233325; --water: #132634; --edge: #05080a; --lit: 0.5;
  --bld-lo: #39434a; --bld-hi: #6fd1bb;
  --src-m: #6fd1bb; --src-f: #e0b85c; --src-e: #4d5860;
  --sheet: rgba(20, 26, 30, 0.9); --ink: #e6ecef; --muted: #98a6ae; --rule: #33404a; --accent: #6fd1bb; color-scheme: dark;
} }
:root[data-theme="dark"] {
  --sky: #0f1417; --ground: #1d2226; --road: #2e353a; --path: #262c30; --park: #233325; --water: #132634; --edge: #05080a; --lit: 0.5;
  --bld-lo: #39434a; --bld-hi: #6fd1bb;
  --src-m: #6fd1bb; --src-f: #e0b85c; --src-e: #4d5860;
  --sheet: rgba(20, 26, 30, 0.9); --ink: #e6ecef; --muted: #98a6ae; --rule: #33404a; --accent: #6fd1bb; color-scheme: dark;
}
html, body { height: 100%; }
body { background: var(--sky); color: var(--ink); font-family: var(--f-body); overflow: hidden; }
#stage { position: fixed; inset: 0; }
#stage canvas { display: block; touch-action: none; }
.sheet {
  position: fixed; z-index: 2;
  top: calc(env(safe-area-inset-top, 0px) + 16px);
  left: max(16px, env(safe-area-inset-left, 0px));
  width: min(320px, calc(100vw - 32px));
  max-height: calc(100% - 32px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
  overflow-y: auto;
  background: var(--sheet); backdrop-filter: blur(8px);
  border: 1px solid var(--rule); border-radius: 6px;
  padding: 16px 18px; display: flex; flex-direction: column; gap: 14px;
}
.eyebrow { font: 500 11px/1 var(--f-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
h1 { font: 700 30px/1 var(--f-display); letter-spacing: -.01em; margin: 6px 0 0; text-wrap: balance; }
.lede { margin: 0; font-size: 14px; line-height: 1.45; color: var(--muted); }
.group { display: flex; flex-direction: column; gap: 8px; border-top: 1px solid var(--rule); padding-top: 12px; }
.seg { display: flex; border: 1px solid var(--rule); border-radius: 4px; overflow: hidden; }
.seg button { flex: 1; font: 600 13px var(--f-body); padding: 7px 8px; background: transparent; color: var(--ink); border: 0; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--rule); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--sky); }
button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.ramp { height: 8px; border-radius: 2px; background: linear-gradient(90deg, var(--bld-lo), var(--bld-hi)); border: 1px solid var(--rule); }
.ramp-scale { display: flex; justify-content: space-between; font: 400 11px var(--f-mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.keys { display: grid; gap: 4px; font-size: 13px; }
.key { display: grid; grid-template-columns: 12px 1fr auto; gap: 8px; align-items: center; }
.key i { width: 12px; height: 12px; border-radius: 2px; border: 1px solid var(--rule); }
.key b { font: 400 12px var(--f-mono); color: var(--muted); font-variant-numeric: tabular-nums; }
label.row { display: flex; justify-content: space-between; font-size: 13px; }
label.row output { font-family: var(--f-mono); font-size: 12px; color: var(--muted); }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.tall { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.tall button { width: 100%; display: grid; grid-template-columns: 1fr auto; gap: 8px; text-align: left; background: none; border: 0; padding: 5px 6px; margin: 0 -6px; border-radius: 3px; color: var(--ink); font: 400 13px var(--f-body); cursor: pointer; }
.tall button:hover { background: color-mix(in srgb, var(--accent) 14%, transparent); }
.tall span:last-child { font: 400 12px var(--f-mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.foot { font-size: 11.5px; color: var(--muted); line-height: 1.4; margin: 0; }
.foot a { color: inherit; }
#tip { position: fixed; z-index: 3; pointer-events: none; background: var(--sheet); border: 1px solid var(--rule); border-radius: 4px; padding: 8px 10px; font-size: 13px; line-height: 1.35; max-width: 240px; transform: translate(14px, 14px); backdrop-filter: blur(6px); }
#tip strong { display: block; font: 700 15px var(--f-display); }
#tip .m { font: 400 12px var(--f-mono); color: var(--muted); }
#toggle { display: none; }
@media (max-width: 640px) {
  .sheet { top: auto; bottom: calc(env(safe-area-inset-bottom, 0px) + 12px); max-height: 46%; gap: 10px; padding: 12px 14px; }
  .sheet.collapsed > :not(header) { display: none; }
  #toggle { display: inline-block; font: 600 12px var(--f-body); background: none; border: 1px solid var(--rule); color: var(--ink); border-radius: 4px; padding: 4px 8px; }
  header { display: flex; justify-content: space-between; align-items: end; gap: 8px; }
  h1 { font-size: 24px; }
  .lede { display: none; }
}
.back { font: 500 12px/1 var(--f-mono); color: var(--muted); text-decoration: none; letter-spacing: .04em; }
.back:hover { color: var(--accent); }
.display-narrow { font-stretch: 78%; }