:root {
  --bg: #f4f2ee; --panel: #ffffff; --fg: #1d1d1f; --muted: #6b6b70; --line: #d9d6cf;
  --accent: #e8590c; --accent2: #1c7ed6; --chip: #ece9e2;
  color-scheme: light;
}
:root.dark {
  --bg: #121214; --panel: #1b1b1f; --fg: #e6e4df; --muted: #9a9890; --line: #2e2e34;
  --accent: #ff7a2f; --accent2: #4dabf7; --chip: #26262b;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--fg); }
body { font: 14px/1.5 system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif; }

header {
  display: flex; align-items: center; gap: 12px; padding: 10px 16px;
  border-bottom: 1px solid var(--line); position: relative;
}
.brand { flex: 1; display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
h1 { margin: 0; font-size: 20px; letter-spacing: 0.02em; }
h1::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); margin-right: 8px; box-shadow: 0 0 12px var(--accent); }
.sub { color: var(--muted); font-size: 13px; }
button, select, input[type=file] { font: inherit; color: inherit; }
button {
  background: var(--chip); border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.icon { font-size: 20px; padding: 2px 10px; }
select {
  background: var(--chip); border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; width: 100%;
}
input[type=range] { accent-color: var(--accent); }

.menu {
  position: absolute; right: 12px; top: 52px; z-index: 20; background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; min-width: 260px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.35);
}
.menu[hidden] { display: none; }
.menu label { display: flex; gap: 8px; align-items: center; }
.menu label.col { flex-direction: column; align-items: stretch; gap: 4px; }
.menu small { color: var(--muted); }
.menu a { color: var(--accent2); }

#transport {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; padding: 8px 16px;
  border-bottom: 1px solid var(--line); background: var(--panel);
}
#transport label { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
#transport label.grow { flex: 1; min-width: 200px; }
#transport label.grow input { flex: 1; }
#transport select { width: auto; }

main {
  display: grid; grid-template-columns: 270px minmax(0, 1fr) 330px; gap: 12px; padding: 12px 16px;
  height: calc(100vh - 110px); min-height: 560px;
}
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; overflow: auto; }
.panel h2 { font-size: 13px; text-transform: none; color: var(--muted); margin: 14px 0 6px; font-weight: 600; letter-spacing: 0.04em; }
.panel h2:first-child { margin-top: 0; }
.panel h2 small { font-weight: 400; }
#controls label { display: block; margin-bottom: 8px; font-size: 13px; }
#controls label select { margin-top: 2px; }
.hint { color: var(--muted); font-size: 12px; }

#viewWrap { position: relative; padding: 0; overflow: hidden; }
#view3d { width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
#hud {
  position: absolute; left: 10px; top: 10px; background: rgba(0,0,0,0.5); color: #fff; font-size: 12px;
  padding: 3px 8px; border-radius: 6px; pointer-events: none;
}
#mini {
  position: absolute; right: 10px; top: 10px; width: 260px; height: 260px; border-radius: 10px; overflow: hidden;
  border: 1px solid rgba(255,255,255,0.3); box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
#mini[hidden] { display: none; }
#map { width: 100%; height: 100%; display: block; touch-action: none; cursor: crosshair; }
#legend {
  pointer-events: none; /* never block dragging S / 席 underneath */
  position: absolute; left: 6px; bottom: 6px; background: rgba(20,20,24,0.8); color: #ddd;
  border-radius: 6px; padding: 3px 6px; font-size: 10px;
}
#legend canvas { display: block; width: 140px; height: 8px; margin: 2px 0; }
#legend .row { display: flex; justify-content: space-between; }
#joy { position: absolute; left: 24px; bottom: 24px; width: 110px; height: 110px; border-radius: 50%; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.35); pointer-events: none; }
#joy div { position: absolute; left: 35px; top: 35px; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.5); }
.srcRow { display: flex; gap: 6px; margin-bottom: 6px; }
.srcRow[hidden] { display: none; }
.srcRow input { flex: 1; min-width: 0; background: var(--chip); color: inherit; border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; }
.meter { height: 6px; background: var(--chip); border-radius: 3px; overflow: hidden; margin-bottom: 6px; }
.meter div { height: 100%; width: 0; background: linear-gradient(90deg, #2f9e44, #fab005 70%, #e03131); }
.busy { pointer-events: none; position: absolute; right: 10px; top: 10px; background: var(--chip); padding: 2px 8px; border-radius: 6px; font-size: 12px; }

.kv { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; margin: 0; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-variant-numeric: tabular-nums; text-align: right; }
.kv dd.big { font-size: 22px; font-weight: 700; color: var(--accent); }
#fr { width: 100%; height: 170px; display: block; border-radius: 8px; background: var(--chip); }
details { margin-top: 12px; font-size: 12px; }
summary { cursor: pointer; color: var(--accent2); }
.models { padding-left: 18px; }
.models li { margin-bottom: 4px; }

@media (max-width: 1100px) {
  main { grid-template-columns: 250px minmax(0, 1fr); height: auto; }
  #viewWrap { height: 70vh; }
  #info { grid-column: 1 / -1; }
}
@media (max-width: 700px) {
  main { grid-template-columns: 1fr; padding: 10px; }
  #viewWrap { height: 75vh; order: -1; }
  #mini { width: 150px; height: 150px; }
  #legend { display: none; }
  #controls { display: grid; grid-template-columns: 1fr 1fr; gap: 0 10px; }
  #controls h2, #controls .hint, #controls input[type=file], #controls #fileName { grid-column: 1 / -1; }
  .sub { display: none; }
}