.player {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: 100%;
  background: #070908;
  color: #f2f4f1;
  outline: none;
}

.player:focus-visible {
  box-shadow: inset 0 0 0 3px rgba(242, 244, 241, 0.9);
}

.video {
  display: block;
  object-fit: contain;
  background: #070908;
  cursor: pointer;
}

.player[data-caption-size="small"] video::cue { font-size: 0.82rem; }
.player[data-caption-size="medium"] video::cue { font-size: 1rem; }
.player[data-caption-size="large"] video::cue { font-size: 1.22rem; }

.player video::cue {
  color: #fff;
  background: rgba(5, 7, 6, 0.88);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.9);
}

.loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 0.65rem;
  background: rgba(7, 9, 8, 0.3);
  color: rgba(242, 244, 241, 0.9);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.01em;
  pointer-events: none;
}

.error {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(88%, 28rem);
  transform: translate(-50%, -50%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0.75rem;
  background: rgba(11, 15, 14, 0.94);
  padding: 1rem;
  text-align: center;
  font-size: 0.75rem;
  line-height: 1.45;
}

.chrome {
  position: absolute;
  inset: auto 0 0;
  z-index: 3;
  padding: 3.5rem 0.75rem 0.7rem;
  background: linear-gradient(to bottom, transparent, rgba(4, 6, 5, 0.86) 45%, rgba(4, 6, 5, 0.98));
  opacity: 0;
  transform: translateY(5px);
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.chromeVisible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.timelineRow {
  display: grid;
  grid-template-columns: 2.8rem minmax(0, 1fr) 2.8rem;
  align-items: center;
  gap: 0.55rem;
}

.time {
  color: rgba(242, 244, 241, 0.78);
  font-variant-numeric: tabular-nums;
  font-size: 0.69rem;
  font-weight: 650;
}

.time:last-child { text-align: right; }

.timeline,
.volume {
  margin: 0;
  appearance: none;
  height: 1.35rem;
  background: transparent;
  cursor: pointer;
}

.timeline::-webkit-slider-runnable-track,
.volume::-webkit-slider-runnable-track {
  height: 0.22rem;
  border-radius: 999px;
  background: linear-gradient(to right, #f2f4f1 var(--player-progress, 0%), rgba(255, 255, 255, 0.3) var(--player-progress, 0%));
}

.volume::-webkit-slider-runnable-track { background: rgba(255, 255, 255, 0.35); }

.timeline::-moz-range-track,
.volume::-moz-range-track {
  height: 0.22rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
}

.timeline::-moz-range-progress {
  height: 0.22rem;
  border-radius: 999px;
  background: #f2f4f1;
}

.timeline::-webkit-slider-thumb,
.volume::-webkit-slider-thumb {
  width: 0.78rem;
  height: 0.78rem;
  margin-top: -0.28rem;
  appearance: none;
  border: 0;
  border-radius: 50%;
  background: #f2f4f1;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.45);
}

.timeline::-moz-range-thumb,
.volume::-moz-range-thumb {
  width: 0.78rem;
  height: 0.78rem;
  border: 0;
  border-radius: 50%;
  background: #f2f4f1;
}

.timeline:focus-visible,
.volume:focus-visible {
  outline: 2px solid #f2f4f1;
  outline-offset: 3px;
}

.controlsRow {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  min-height: 2.75rem;
}

.primaryControl,
.iconControl {
  position: relative;
  display: inline-grid;
  place-items: center;
  min-width: 2.75rem;
  min-height: 2.75rem;
  border: 0;
  border-radius: 0.55rem;
  color: rgba(242, 244, 241, 0.88);
  cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease, transform 150ms ease;
}

.primaryControl { background: #f2f4f1; color: #0b0f0e; }
.iconControl { background: transparent; }

.primaryControl:hover,
.iconControl:hover,
.activeControl { background: rgba(255, 255, 255, 0.14); color: #fff; }

.primaryControl:hover { background: #fff; color: #0b0f0e; }

.primaryControl:active,
.iconControl:active { transform: scale(0.96); }

.primaryControl:focus-visible,
.iconControl:focus-visible,
.option:focus-visible,
.textControl:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.skipLabel {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding-top: 0.05rem;
  font-size: 0.48rem;
  font-weight: 800;
}

.volumeGroup { display: flex; align-items: center; }
.volume { width: 4.5rem; }

.lessonLabel {
  margin-left: 0.35rem;
  color: rgba(242, 244, 241, 0.56);
  font-size: 0.65rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.utilityControls {
  position: relative;
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: 0.1rem;
}

.settingsPanel {
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.65rem);
  width: min(20rem, calc(100vw - 2rem));
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.75rem;
  background: rgba(14, 20, 19, 0.98);
  padding: 0.8rem;
  color: #f2f4f1;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.42);
}

.settingsSection {
  margin-top: 0.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 0.8rem;
}

.settingsHeading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.settingsLabel {
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.optionGrid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.55rem;
}

.option,
.textControl {
  min-height: 2.25rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.45rem;
  padding: 0 0.65rem;
  color: rgba(242, 244, 241, 0.76);
  font-size: 0.7rem;
  font-weight: 650;
  cursor: pointer;
}

.option:hover,
.textControl:hover,
.optionSelected {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.textControl { min-height: 1.9rem; }

.shortcutHint {
  margin-top: 0.8rem;
  color: rgba(242, 244, 241, 0.46);
  font-size: 0.62rem;
  line-height: 1.45;
}

@media (max-width: 640px) {
  .chrome { padding: 2.5rem 0.45rem 0.38rem; }
  .timelineRow { grid-template-columns: 2.5rem minmax(0, 1fr) 2.5rem; gap: 0.35rem; }
  .volumeGroup,
  .lessonLabel { display: none; }
  .primaryControl,
  .iconControl { min-width: 2.55rem; min-height: 2.55rem; }
  .settingsPanel {
    position: fixed;
    right: 0.75rem;
    bottom: max(0.75rem, env(safe-area-inset-bottom));
    left: 0.75rem;
    width: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .chrome,
  .primaryControl,
  .iconControl { transition-duration: 80ms; transform: none; }
}