:root {
  color-scheme: dark;
  --line: rgba(255, 255, 255, 0.22);
  --dim: rgba(255, 255, 255, 0.55);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: #000;
  color: #fff;
  font-family: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
}

.page {
  min-height: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 36px 40px 28px;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto auto auto;
  gap: 14px;
}

.meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  font-weight: 400;
  color: #fff;
}

footer.meta { color: var(--dim); }

h1 {
  margin: 8px 0 0;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.caption {
  margin: 0;
  font-size: 11px;
  color: var(--dim);
}

.stage {
  position: relative;
  min-height: 320px;
  touch-action: none;
  cursor: grab;
}

.stage:active { cursor: grabbing; }

#canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.player {
  display: grid;
  grid-template-columns: auto 1fr 92px;
  align-items: center;
  gap: 16px;
}

.player output { color: var(--dim); font-variant-numeric: tabular-nums; text-align: right; font-size: 12px; }

.play {
  position: relative;
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: none;
  cursor: pointer;
}

.play:hover, .play:focus-visible { border-color: #fff; }

.play .icon {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  transform: translate(-30%, -50%);
  border-left: 8px solid #fff;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

.play.playing .icon {
  width: 8px;
  height: 10px;
  transform: translate(-50%, -50%);
  border: 0;
  border-left: 2px solid #fff;
  border-right: 2px solid #fff;
}

.tag {
  position: absolute;
  left: 0;
  display: none;
  font-size: 11px;
  color: var(--dim);
  pointer-events: none;
}

.stage.split .tag { display: block; }
.tag-top { top: 0; }
.tag-bottom { top: 50%; }

.control-wide { grid-column: 1 / -1; }

.controls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px 26px;
  padding: 16px 18px 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.control-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 12px;
}

.control-head output { color: var(--dim); font-variant-numeric: tabular-nums; }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 12px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 1px;
  background: linear-gradient(to right, #fff var(--fill, 0%), var(--line) var(--fill, 0%));
}

input[type="range"]::-moz-range-track {
  height: 1px;
  background: linear-gradient(to right, #fff var(--fill, 0%), var(--line) var(--fill, 0%));
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 7px;
  height: 7px;
  margin-top: -3px;
  border-radius: 50%;
  background: #fff;
}

input[type="range"]::-moz-range-thumb {
  width: 7px;
  height: 7px;
  border: 0;
  border-radius: 50%;
  background: #fff;
}

input[type="range"]:focus-visible { outline: 1px solid #fff; outline-offset: 6px; }

.actions { display: flex; gap: 18px; }

.link {
  position: relative;
  padding: 0;
  border: 0;
  background: none;
  color: var(--dim);
  font: inherit;
  cursor: pointer;
}

.link:hover, .link:focus-visible { color: #fff; }

.link input { position: absolute; inset: 0; opacity: 0; width: 0; height: 0; }

.link:disabled { opacity: 0.4; cursor: default; }

.segments { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; }

.segment { display: inline-flex; border: 1px solid var(--line); border-radius: 3px; }

.segment button {
  padding: 3px 9px;
  border: 0;
  background: none;
  color: var(--dim);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.segment button + button { border-left: 1px solid var(--line); }
.segment button:hover, .segment button:focus-visible { color: #fff; }
.segment button.on { background: #fff; color: #000; }

body.dragover .stage { outline: 1px solid var(--line); outline-offset: 12px; }

#video { position: fixed; width: 1px; height: 1px; opacity: 0; pointer-events: none; left: -10px; top: -10px; }

@media (max-width: 720px) {
  .page { padding: 24px 20px; gap: 12px; }
  .controls { grid-template-columns: 1fr; gap: 18px; }
  .actions { gap: 14px; }
}