:root {
  --panel: #2a2c30;
  --panel-raised: #3a3d43;
  --panel-line: #4b4f56;
  --text: #f3f2ee;
  --text-muted: #b8bcc4;
  --stage: #dde1e4;
  --ivory: #fbf8f0;
  --ebony: #1b1b1d;
  --county-line: #7f858e;
  --accent: #ff6a1a;
  --accent-ink: #2a1200;
  --peek: #ffc49c;
  --cursor: #8ecbff;
  --route: #1864ab;
  --focus: #74c0fc;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--panel);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

#app {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  height: 100vh;
  height: 100dvh;
}

header {
  grid-column: 1 / -1;
  border-bottom: 1px solid var(--panel-line);
  padding: 8px 16px;
  text-align: center;
}

h1 {
  font-size: 26px;
  line-height: 1.2;
  margin: 0;
}

/* ------------------------------------------------------------ controls */

#ui {
  overflow-y: auto;
  padding: 4px 16px 16px;
  position: relative; /* keeps visually hidden inputs inside the scrolling panel */
}

#ui section {
  border-bottom: 1px solid var(--panel-line);
  padding: 12px 0 14px;
}

h2 {
  font-size: 14px;
  letter-spacing: 0.06em;
  margin: 0 0 8px;
  text-transform: uppercase;
}

p { margin: 0; }

.about {
  color: var(--text-muted);
  font-size: 13.5px;
}

.about em { color: var(--text); }

.lead { margin-bottom: 10px; }

.hint {
  color: var(--text-muted);
  font-size: 12.5px;
  margin-top: 6px;
}

.sr {
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

label, .label {
  display: block;
  font-weight: 600;
}

.group { margin-top: 14px; }

.group > label, .group > .label { margin-bottom: 6px; }

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

select, button, input[type="text"] {
  background: var(--panel-raised);
  border: 1px solid var(--panel-line);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  min-height: 36px;
  padding: 6px 10px;
}

select {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
}

.row select { width: auto; }

button {
  cursor: pointer;
  font-weight: 600;
  white-space: nowrap;
}

button:hover:not(:disabled) { border-color: var(--text-muted); }

button:disabled {
  color: #8b9099;
  cursor: default;
}

/* the second declaration hides the glyph from screen readers where supported */
button.play::before {
  content: "\25B6";
  content: "\25B6" / "";
  font-size: 0.8em;
  margin-right: 7px;
}

button.play.playing::before {
  content: "\25A0";
  content: "\25A0" / "";
}

button.play.playing, #record.recording {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

#record::before {
  background: #ff5d5d;
  border-radius: 50%;
  content: "";
  display: inline-block;
  height: 0.7em;
  margin-right: 7px;
  width: 0.7em;
}

#record.recording::before {
  background: var(--accent-ink);
  border-radius: 1px;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.year { margin-top: 12px; }

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

.year output { font-variant-numeric: tabular-nums; }

input[type="range"] {
  accent-color: var(--accent);
  display: block;
  margin: 6px 0 0;
  width: 100%;
}

.year.static label, .year.static input { opacity: 0.45; }

.route {
  align-items: center;
  display: grid;
  gap: 6px 10px;
  grid-template-columns: auto minmax(0, 1fr);
  margin-bottom: 8px;
}

.route label { font-weight: 400; }

.segmented {
  border: 1px solid var(--panel-line);
  border-radius: 6px;
  display: flex;
  overflow: hidden;
}

.segmented label {
  flex: 1;
  font-weight: 600;
  position: relative;
  text-align: center;
}

.segmented input {
  opacity: 0;
  position: absolute;
}

.segmented span {
  cursor: pointer;
  display: block;
  padding: 7px 6px;
}

.segmented input:checked + span {
  background: var(--text);
  color: var(--panel);
}

.segmented input:disabled + span {
  color: #8b9099;
  cursor: default;
}

.segmented input:focus-visible + span {
  outline: 3px solid var(--focus);
  outline-offset: -3px;
}

.volume { margin-top: 12px; }

#share-link {
  font-size: 12.5px;
  margin-top: 8px;
  width: 100%;
}

#ui footer {
  color: var(--text-muted);
  font-size: 12.5px;
  padding-top: 12px;
}

#ui footer p + p { margin-top: 6px; }

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

/* ----------------------------------------------------------------- map */

#stage {
  background: var(--stage);
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}

#map-wrap {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  position: relative;
}

#map {
  display: block;
  flex: 1 1 auto;
  min-height: 0;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  width: 100%;
}

.county {
  fill: var(--ivory);
  fill-rule: evenodd;
  stroke: var(--county-line);
  stroke-linejoin: round;
  stroke-width: 1;
  transition: fill 0.35s;
  vector-effect: non-scaling-stroke;
}

.county.black { fill: var(--ebony); }

.county.peek { fill: var(--peek); }

.county.cursor { fill: var(--cursor); }

.county.on {
  fill: var(--accent);
  transition: none;
}

#overlay { pointer-events: none; }

#route-halo, #route-line {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

#route-halo {
  stroke: #fff;
  stroke-width: 7;
}

#route-line {
  stroke: var(--route);
  stroke-width: 3.5;
}

#center circle {
  fill: var(--route);
  stroke: #fff;
  stroke-width: 2.5;
}

#center text {
  fill: #10233a;
  font-size: 14px;
  font-weight: 700;
  paint-order: stroke;
  stroke: #fff;
  stroke-linejoin: round;
  stroke-width: 4px;
}

#center { transition: transform 0.15s linear; }

#center[hidden] { display: none; }

#legend {
  color: #23262b;
  display: flex;
  flex: none;
  flex-wrap: wrap;
  font-size: 12.5px;
  gap: 2px 18px;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 8px 12px 0;
}

#legend li {
  align-items: center;
  display: flex;
  gap: 6px;
}

.swatch {
  border: 1px solid var(--county-line);
  border-radius: 2px;
  flex: none;
  height: 12px;
  width: 12px;
}

.swatch.white { background: var(--ivory); }
.swatch.black { background: var(--ebony); }
.swatch.on { background: var(--accent); }

#start {
  background: #ffe1e1;
  border: 1px solid #b98a8a;
  border-radius: 8px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
  color: #33211f;
  font-size: 17px;
  font-weight: 400;
  left: 50%;
  line-height: 1.4;
  max-width: calc(100% - 32px);
  padding: 18px 26px;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  white-space: normal;
  width: 380px;
}

#start strong {
  display: block;
  font-size: 22px;
}

#start[hidden] { display: none; }

#status {
  color: #23262b;
  flex: none;
  font-size: 13.5px;
  line-height: 1.35;
  min-height: 2.7em;
  padding: 0 14px 4px;
  text-align: center;
}

/* ------------------------------------------------------------ keyboard */

#keys-wrap {
  background: var(--panel);
  flex: none;
  padding: 6px 12px 12px;
}

#keys-caption {
  color: var(--text-muted);
  display: flex;
  font-size: 12.5px;
  gap: 12px;
  justify-content: space-between;
  padding-bottom: 5px;
}

#cap-low, #cap-high { white-space: nowrap; }

#cap-mid {
  color: var(--text);
  font-weight: 600;
  text-align: center;
}

#keys {
  border-radius: 0 0 4px 4px;
  display: block;
  height: 96px;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  width: 100%;
}

.key {
  cursor: pointer;
  stroke: #2a2c30;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.key.white { fill: var(--ivory); }
.key.black { fill: var(--ebony); }
.key.peek { fill: var(--peek); }
.key.cursor { fill: var(--cursor); }
.key.on { fill: var(--accent); }

/* -------------------------------------------------------- small screens */

@media (max-width: 820px) {
  #app {
    display: flex;
    flex-direction: column;
    height: auto;
  }

  /* Phone order: title, sort controls, map and keys, then everything else. */
  header { order: 0; }

  #ui { display: contents; }

  #ui > section, #ui > footer {
    order: 3;
    padding-left: 16px;
    padding-right: 16px;
  }

  #ui > #sort-section {
    border-bottom: 0;
    order: 1;
    padding-bottom: 10px;
    padding-top: 10px;
  }

  #sort-section h2, #sort-hint { display: none; }

  #stage {
    height: 62vh;
    height: 62dvh;
    min-height: 380px;
    order: 2;
  }

  #ui > footer { padding-bottom: 20px; }

  h1 { font-size: 21px; }

  #keys { height: 76px; }

  #cap-mid { font-size: 11.5px; }
}

@media (prefers-reduced-motion: reduce) {
  .county, #center { transition: none; }
}