:root {
  --bg: #0f1115;
  --card: #171a21;
  --accent: #5b8cff;
  --accent-dim: rgba(91, 140, 255, 0.25);
  --text: #f2f3f5;
  --text-dim: #9aa0ac;
  --track: #2a2e38;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.player-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border-radius: 20px;
  padding: 32px 28px 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

.eyebrow {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
}

.seek-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.waveform-track {
  position: relative;
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: var(--track);
  cursor: pointer;
}

.buffered-fill,
.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  border-radius: 4px;
  width: 0%;
}

.buffered-fill {
  background: rgba(154, 160, 172, 0.35);
}

.progress-fill {
  background: var(--accent);
}

.progress-handle {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 4px var(--accent-dim);
}

.time-row {
  display: flex;
  justify-content: space-between;
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-bottom: 24px;
}

.icon-btn {
  position: relative;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}

.icon-btn:hover {
  background: var(--track);
}

.icon-btn svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.icon-btn.small {
  flex-shrink: 0;
}

.icon-btn.small svg {
  width: 20px;
  height: 20px;
}

.icon-btn.skip-btn {
  padding-bottom: 20px;
}

.skip-label {
  position: absolute;
  left: 50%;
  bottom: 3px;
  transform: translateX(-50%);
  font-size: 9px;
  font-weight: 700;
}

.play-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px var(--accent-dim);
  transition: transform 0.1s ease;
}

.play-btn:hover {
  transform: scale(1.05);
}

.play-btn:active {
  transform: scale(0.97);
}

.play-btn svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.secondary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.volume-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
}

#volumeSlider {
  flex: 1;
  accent-color: var(--accent);
}

.speed-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-dim);
}

#speedSelect {
  background: var(--track);
  color: var(--text);
  border: none;
  border-radius: 8px;
  padding: 6px 8px;
  font-size: 13px;
  cursor: pointer;
}

.hint {
  text-align: center;
  margin: 24px 0 0;
  font-size: 11px;
  color: var(--text-dim);
}

@media (max-width: 420px) {
  .player-card {
    padding: 24px 20px 20px;
  }

  .hint {
    display: none;
  }
}