:root {
  color-scheme: dark;
  font-family: system-ui, -apple-system, sans-serif;
}

html,
body {
  margin: 0;
  height: 100%;
  background: #05060a;
  color: #f5f5f7;
}

body {
  display: flex;
  justify-content: center;
}

#player {
  width: 100%;
  max-width: 480px;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#artwork {
  flex: 1;
  position: relative;
  min-height: 0;
  background: radial-gradient(circle at 30% 20%, #1c2a5e, #05060a 70%);
  overflow: hidden;
}

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

#variant-badge {
  position: absolute;
  top: 20px;
  left: 20px;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.12);
  padding: 5px 14px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}

#status {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  margin: 0;
  font-size: 0.85rem;
  color: #cbd5e1;
  text-align: center;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

#status:empty {
  display: none;
}

#sheet {
  background: #0b0d12;
  padding: 18px 22px calc(20px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.track-row {
  margin-bottom: 16px;
}

.track-title {
  font-size: 1.6rem;
  font-weight: 700;
}

.track-sub {
  margin-top: 4px;
  font-size: 0.95rem;
  color: #9ba3b4;
  letter-spacing: 0.03em;
}

.scrub {
  margin-bottom: 20px;
}

.scrub-bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  overflow: hidden;
}

.scrub-fill {
  height: 100%;
  width: 0%;
  background: #7dd3fc;
  border-radius: 999px;
  transition: width 0.2s linear;
}

.scrub-fill.is-live {
  width: 100%;
  animation: live-pulse 1.6s ease-in-out infinite;
}

@keyframes live-pulse {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 0.9;
  }
}

.scrub-labels {
  display: flex;
  justify-content: space-between;
  min-height: 1em;
  font-size: 0.75rem;
  color: #9ba3b4;
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
}

.controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.side-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.06);
  color: #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  box-sizing: border-box;
  padding: 0;
}

.icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.icon.is-hidden {
  display: none;
}

.center-btn .icon {
  width: 26px;
  height: 26px;
}

.icon-play {
  margin-left: 2px;
}

.icon-record {
  width: 14px;
  height: 14px;
}

.side-btn.record {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.3);
}

.side-btn.record.is-recording {
  background: #ef4444;
  color: white;
  border-color: #ef4444;
  animation: record-pulse 1.2s ease-in-out infinite;
}

@keyframes record-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(239, 68, 68, 0);
  }
}

.side-btn:disabled,
.side-btn.is-disabled {
  background: rgba(255, 255, 255, 0.04);
  color: #4b4f5a;
  border-color: transparent;
  cursor: not-allowed;
  animation: none;
}

.side-btn.is-disabled {
  pointer-events: none;
}

.center-btn {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  border: none;
  background: #fff;
  color: #05060a;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}

.center-btn:disabled {
  background: #3a3d47;
  color: #8a8d99;
  cursor: not-allowed;
}