/* Shared layout for the layered metro maps (Namma Metro, Delhi Metro).
   Colour tokens are set by metro-engine.js from the active scene theme. */
body { overflow: hidden; background: var(--bg); transition: background-color 0.3s ease; }
.app { position: relative; height: calc(100% - 34px); }
.stage { position: absolute; inset: 0; overflow: hidden; }
.stage canvas { display: block; width: 100%; height: 100%; touch-action: none; }
.intro { position: absolute; top: 18px; left: var(--gutter); max-width: 400px; z-index: 3; }
.intro .kn.dev { font-family: "Anek Devanagari", "Noto Sans Devanagari", var(--display); }

/* ledger */
.ledger {
  position: absolute; top: 18px; right: var(--gutter); z-index: 3; width: 286px; max-height: calc(100% - 200px);
  display: flex; flex-direction: column;
  background: color-mix(in srgb, var(--panel) 88%, transparent); backdrop-filter: blur(8px);
  border: 1px solid var(--rule); border-radius: 10px; padding: 14px 16px 8px;
}
.ledger > * { flex-shrink: 0; }
.ledger .lines { flex: 1 1 auto; flex-shrink: 1; }
.ledger .when { font-family: var(--display); font-weight: 800; font-stretch: 118%; font-size: 2.1rem; line-height: 1; font-variant-numeric: tabular-nums; }
.ledger .what { color: var(--muted); font-size: 0.8rem; margin: 6px 0 12px; min-height: 2.4em; text-wrap: pretty; }
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; padding-bottom: 10px; }
.kpi b { display: block; font-family: var(--mono); font-weight: 500; font-size: 1.15rem; font-variant-numeric: tabular-nums; }
.kpi span { font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.lines-head { display: flex; justify-content: space-between; align-items: baseline; font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); padding-block: 6px 4px; border-top: 1px solid var(--rule); }
.lines-head button { background: none; border: 0; padding: 0; color: var(--muted); font: inherit; letter-spacing: inherit; text-transform: inherit; cursor: pointer; text-decoration: underline; text-underline-offset: 2px; }
.lines-head button:hover { color: var(--ink); }
.lines { overflow-y: auto; min-height: 0; margin-inline: -6px; padding-inline: 6px; scrollbar-width: thin; }
.ln { width: 100%; display: grid; grid-template-columns: 24px 1fr auto; gap: 8px; align-items: center; padding: 6px 4px; margin-inline: -4px; border: 0; border-top: 1px solid var(--rule); background: none; color: var(--ink); font: inherit; font-size: 0.8rem; text-align: left; cursor: pointer; border-radius: 4px; }
.ln:first-child { border-top: 0; }
.ln:hover { background: color-mix(in srgb, var(--ink) 6%, transparent); }
.ln .bar { height: 4px; border-radius: 2px; }
.ln .bar.dash { background-image: repeating-linear-gradient(90deg, currentColor 0 5px, transparent 5px 9px) !important; background-color: transparent !important; }
.ln .st { font-family: var(--mono); font-size: 0.66rem; color: var(--muted); font-variant-numeric: tabular-nums; text-align: right; }
.ln .nm small { display: block; color: var(--muted); font-size: 0.68rem; }
.ln[aria-pressed="false"] { opacity: 0.38; }
.ln[aria-pressed="false"] .nm { text-decoration: line-through; }

/* bottom rail */
.rail {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 3;
  padding: 0 var(--gutter) calc(12px + env(safe-area-inset-bottom, 0px));
  display: grid; grid-template-columns: auto minmax(0, 1fr) 300px; gap: 20px; align-items: end;
}
.side { display: grid; grid-template-columns: auto auto; gap: 8px; align-items: start; padding-bottom: 4px; }
.side .btn { justify-content: center; }
.btn .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); display: inline-block; }
.btn[aria-pressed="true"] .dot { background: var(--accent); }
.tl { min-width: 0; overflow-x: auto; padding: 0 22px 2px; }
.tl-inner { position: relative; min-width: 600px; }
.marks { position: relative; height: 54px; }
.mark { --row: 0; position: absolute; bottom: 0; transform: translateX(-50%); background: none; border: 0; padding: 0 2px; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 2px; color: var(--muted); }
.mark i { width: 2px; height: calc(7px + var(--row) * 14px); background: var(--muted); display: block; }
.mark span { font-family: var(--mono); font-size: 0.56rem; white-space: nowrap; font-variant-numeric: tabular-nums; }
.mark.nolabel span { visibility: hidden; }
.mark.past { color: var(--ink); }
.mark.past i { background: var(--ink); }
.mark:hover span, .mark:focus-visible span { color: var(--accent); }
.range { width: 100%; margin: 2px 0 0; accent-color: var(--accent); height: 22px; cursor: pointer; }
.range-scale { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 0.56rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.inset { background: color-mix(in srgb, var(--panel) 88%, transparent); border: 1px solid var(--rule); border-radius: 10px; padding: 10px 12px 6px; }
.inset h2 { font-family: var(--mono); font-weight: 500; font-size: 0.58rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin: 0 0 4px; }
.inset svg { display: block; width: 100%; height: auto; overflow: visible; }
.inset svg text { font-family: var(--mono); font-size: 9px; fill: var(--muted); }
.inset svg .v { fill: var(--ink); }

/* in-scene labels */
.tag {
  position: absolute; left: 0; top: 0; z-index: 2; pointer-events: none;
  font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink);
  background: color-mix(in srgb, var(--bg) 72%, transparent); padding: 2px 6px 2px 5px; border-radius: 3px; white-space: nowrap;
  transform: translate(-9999px, 0); display: flex; align-items: center; gap: 5px;
}
.tag i { width: 7px; height: 7px; border-radius: 50%; display: block; }
.tag.big { font-size: 0.64rem; font-weight: 600; }
.tag[hidden] { display: none !important; }

.note { position: absolute; left: var(--gutter); top: 52%; z-index: 3; max-width: 190px; font-size: 0.72rem; color: var(--muted); display: grid; gap: 8px; }
.note .row { display: flex; gap: 8px; align-items: center; }
.note .row b { width: 22px; height: 0; border-top: 3px solid var(--muted); flex: none; }
.note .row b.u { opacity: 0.45; }
.note .row b.p { border-top-style: dashed; }

/* customise panel */
.panel {
  position: fixed; z-index: 45; top: 50px; right: var(--gutter); width: 318px; max-height: calc(100% - 70px); overflow-y: auto;
  background: var(--panel); color: var(--ink); border: 1px solid var(--rule); border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35); padding: 14px 16px 16px;
}
.panel header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.panel h2 { font-family: var(--display); font-stretch: 112%; font-size: 1.1rem; margin: 0; }
.panel .grp { border-top: 1px solid var(--rule); padding-block: 10px; display: grid; gap: 10px; }
.panel .grp h3 { font-family: var(--mono); font-weight: 500; font-size: 0.58rem; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); margin: 0; }
.ctl { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: center; font-size: 0.82rem; }
.ctl label { cursor: pointer; }
.ctl output { font-family: var(--mono); font-size: 0.68rem; color: var(--muted); font-variant-numeric: tabular-nums; min-width: 4ch; text-align: right; }
.ctl input[type="range"] { grid-column: 1 / -1; width: 100%; accent-color: var(--accent); margin: 0; }
.ctl .hint { grid-column: 1 / -1; font-size: 0.7rem; color: var(--muted); margin-top: -2px; }
.switch { width: 38px; height: 22px; border-radius: 999px; border: 1px solid var(--rule); background: color-mix(in srgb, var(--ink) 12%, transparent); position: relative; cursor: pointer; padding: 0; flex: none; }
.switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: var(--muted); transition: transform 0.18s ease, background 0.18s ease; }
.switch[aria-checked="true"] { background: color-mix(in srgb, var(--accent) 35%, transparent); border-color: var(--accent); }
.switch[aria-checked="true"]::after { transform: translateX(16px); background: var(--accent); }
.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: 999px; padding: 2px; gap: 2px; }
.seg button { border: 0; background: none; border-radius: 999px; padding: 4px 10px; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.ctl.wide { grid-template-columns: 1fr; }
.panel .foot { display: flex; justify-content: space-between; gap: 8px; padding-top: 10px; border-top: 1px solid var(--rule); }
.kbd { font-family: var(--mono); font-size: 0.62rem; border: 1px solid var(--rule); border-radius: 3px; padding: 0 4px; color: var(--muted); }

.touch-hint { display: none; }
.fallback { position: absolute; inset: 30% var(--gutter) auto; text-align: center; color: var(--muted); }
@media (max-width: 1100px) { .note { display: none; } }
@media (max-width: 760px) {
  body { overflow: auto; }
  .app { height: auto; display: flex; flex-direction: column; }
  .intro, .ledger, .rail { position: static; }
  .intro { order: -1; padding: 14px var(--gutter) 0; max-width: none; }
  .stage { position: relative; height: 60vh; min-height: 340px; }
  .touch-hint { display: block; margin: 6px var(--gutter) 10px; font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.04em; color: var(--muted); text-align: center; }
  .tag { font-size: 0.5rem; padding: 1px 4px; gap: 4px; }
  .tag.big { font-size: 0.56rem; }
  .ledger { width: auto; max-height: none; margin: 0 var(--gutter); }
  .lines { max-height: 260px; }
  .rail { grid-template-columns: 1fr; padding-top: 12px; }
  .side { grid-template-columns: repeat(2, auto); justify-content: start; }
  .panel { left: var(--gutter); right: var(--gutter); width: auto; top: auto; bottom: calc(12px + env(safe-area-inset-bottom, 0px)); max-height: 75%; }
}