:root {
  color-scheme: dark;
  --ink: #e9ece6;
  --muted: #98a29c;
  --signal: #aefc6f;
  --signal-soft: #5b7d4b;
  --caption-dim: #7d8781;
  --accent: #e16651;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgb(174 252 111 / 0.025), transparent 35%),
    #090c0b;
  font-family: "Trebuchet MS", sans-serif;
}

.player-shell {
  width: min(940px, calc(100% - 48px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 48px 0;
}

header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.station {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font: 400 2.8rem/1 Georgia, serif;
  letter-spacing: 0;
}

.signal {
  padding-top: 5px;
  color: var(--signal);
  font-size: 0.78rem;
  white-space: nowrap;
}

.signal::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
}

.controls {
  display: grid;
  gap: 20px;
  margin-top: 40px;
}

select {
  width: 100%;
  min-height: 44px;
  padding: 8px 38px 8px 0;
  border: 0;
  border-bottom: 1px solid var(--signal-soft);
  border-radius: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font: 600 1.15rem/1.4 "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  appearance: none;
  cursor: pointer;
}

select:hover {
  border-bottom-color: var(--signal);
}

select option {
  color: var(--ink);
  background: #111614;
}

.track-picker {
  display: grid;
  gap: 2px;
}

.track-picker label {
  color: var(--signal-soft);
  font: 700 0.68rem/1 "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: "⌄";
  position: absolute;
  right: 4px;
  bottom: 12px;
  color: var(--signal);
  font-size: 1.3rem;
  line-height: 1;
  pointer-events: none;
}

audio {
  display: none;
}

#visualizer {
  display: block;
  width: 100%;
  height: 180px;
}

.transport {
  display: grid;
  grid-template-columns: 34px 42px minmax(100px, 1fr) 42px 28px 100px;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font: 0.75rem/1 ui-monospace, "Cascadia Mono", monospace;
}

button {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  color: var(--signal);
  background: transparent;
  font-size: 1.15rem;
  cursor: pointer;
}

button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 2px solid var(--signal-soft);
  outline-offset: 4px;
}

input[type="range"] {
  width: 100%;
  height: 16px;
  margin: 0;
  accent-color: var(--signal);
  cursor: pointer;
}

.volume-icon {
  color: var(--signal-soft);
  font-size: 0.65rem;
}

.caption-stage {
  min-height: 290px;
  padding: 64px 0 24px;
  display: grid;
  align-content: center;
  gap: 12px;
}

.caption,
.caption-context {
  margin: 0;
  text-align: center;
  font-family: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0;
}

.caption {
  font-size: 2.15rem;
  font-weight: 500;
  line-height: 1.35;
}

.caption-context {
  color: var(--muted);
  font-size: 1.2rem;
  font-weight: 400;
  line-height: 1.4;
}

.word {
  color: transparent;
  background: linear-gradient(
    90deg,
    var(--signal) 0 var(--progress, 0%),
    var(--caption-dim) var(--progress, 0%) 100%
  );
  background-clip: text;
  -webkit-background-clip: text;
  text-shadow: 0 0 14px rgb(174 252 111 / calc(var(--active, 0) * 0.24));
}

.empty {
  color: var(--muted);
}

@media (max-width: 560px) {
  .player-shell {
    width: min(100% - 32px, 940px);
    padding-top: 28px;
  }

  header {
    align-items: flex-end;
  }

  h1 {
    font-size: 2rem;
  }

  #visualizer {
    height: 130px;
  }

  .transport {
    grid-template-columns: 34px 38px minmax(80px, 1fr) 38px;
  }

  .volume-icon,
  #volume {
    display: none;
  }

  .caption-stage {
    min-height: 260px;
    padding-top: 44px;
    gap: 10px;
  }

  .caption {
    font-size: 1.55rem;
  }

  .caption-context {
    font-size: 1.05rem;
  }
}