.lab-content-page {
  padding-bottom: 24px;
}
.lab-content-page .breadcrumb {
  padding: 4px 0;
  margin: 10px 0 8px;
  font-size: 0.72rem;
}
.audio-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.audio-heading h1 {
  margin: 0;
  line-height: 1.3;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}
.audio-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
}
.audio-actions input {
  width: 80px;
}
.audio-lab {
  font-size: 0.75rem;
  line-height: 1.4;
  display: grid;
  grid-template-columns: 276px minmax(0, 1fr);
  gap: 12px 18px;
  align-items: start;
}
.audio-controls {
  display: grid;
  gap: 10px;
}
.audio-controls .audio-panel {
  padding: 10px;
}
.audio-panel,
.wave-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  padding: 12px;
}
.audio-lab button,
.audio-heading button {
  font: inherit;
  font-size: 0.75rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 7px;
  min-height: 32px;
  padding: 5px 10px;
  cursor: pointer;
}
.audio-lab button:hover,
.audio-heading button:hover {
  background: var(--blue-light, #eff6fb);
  border-color: var(--blue-strong);
}
.audio-lab button:disabled {
  opacity: 0.5;
  cursor: default;
}
.audio-lab button[data-playing="true"] {
  background: var(--blue-strong);
  border-color: var(--blue-strong);
  color: #fff;
}
.audio-lab input,
.audio-lab select {
  font: inherit;
  font-size: 0.8rem;
  color: var(--ink);
  min-width: 0;
}
.audio-lab select,
.rate-number input {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
  padding: 7px;
}
.audio-controls label {
  display: block;
  font-size: 0.76rem;
  font-weight: 700;
  margin-bottom: 7px;
}
.source-panel select {
  width: 100%;
}
.source-panel small {
  display: block;
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 0.7rem;
}
#tone-control {
  margin-top: 12px;
}
#tone-control output {
  float: right;
  font-weight: 400;
}
.audio-lab input[type="range"],
.audio-actions input {
  accent-color: var(--blue-strong);
  cursor: pointer;
}
.audio-controls input[type="range"] {
  width: 100%;
  margin: 5px 0;
}
.rate-number {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
}
.rate-number input {
  width: 100%;
  font-size: 1.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  padding: 5px 7px;
  appearance: textfield;
}
.rate-number input::-webkit-inner-spin-button,
.rate-number input::-webkit-outer-spin-button {
  appearance: none;
  margin: 0;
}
.rate-stepper {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.rate-stepper button {
  width: 32px;
  min-height: 27px;
  padding: 0;
  font-size: 1rem;
}
.sampling-warning {
  display: block;
  min-height: 1.5em;
  margin-top: 5px;
  font-size: 0.65rem;
  color: #8e450c;
  line-height: 1.5;
}
.range-extents {
  display: flex;
  justify-content: space-between;
  font-size: 0.6rem;
  color: var(--ink-soft);
}
.control-detail {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 0.7rem;
}
.bits-panel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}
.bits-panel label {
  margin: 0;
}
.audio-stepper {
  display: flex;
  align-items: center;
  gap: 7px;
}
.audio-stepper output {
  font-size: 1.5rem;
  font-weight: 700;
  min-width: 46px;
  text-align: center;
  white-space: nowrap;
}
.audio-stepper output small {
  font-size: 0.7rem;
  font-weight: 400;
}
.audio-stepper > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.audio-stepper button {
  min-height: 27px;
  width: 32px;
  padding: 0;
  font-size: 1rem;
}
.audio-visuals {
  min-width: 0;
}
.wave-navigation {
  padding: 8px 12px;
}
.wave-controls {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 9px;
  flex-shrink: 0;
  min-width: 0;
}
.wave-range {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  flex-shrink: 0;
}
.wave-range label {
  font-weight: 700;
}
.wave-range select {
  padding: 3px 6px;
  font-size: 0.72rem;
}
.wave-title output {
  font-size: 0.65rem;
  color: var(--ink-soft);
  white-space: nowrap;
}
#overview-wave {
  display: block;
  width: 100%;
  height: 32px;
  cursor: crosshair;
  touch-action: none;
}
.wave-card {
  margin: 10px 0 0;
  padding: 10px 10px 20px;
  overflow: hidden;
  font-size: 0.7rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-sizing: border-box;
  height: 327px;
  min-height: 260px;
  max-width: 100%;
  container-type: inline-size;
}
.wave-card figcaption {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  flex-shrink: 0;
}
.wave-title {
  display: flex;
  gap: 12px;
  align-items: center;
}
.wave-card h2 {
  font-size: 0.88rem;
  margin: 0;
  white-space: nowrap;
}
.wave-card figcaption button {
  font-size: 0.7rem;
  padding: 4px 7px;
}
.play-buttons {
  display: flex;
  align-items: center;
  gap: 7px;
}
.play-buttons button {
  white-space: nowrap;
}
.audio-lab .wave-card button {
  color: #fff;
  background: #18374f;
  border-color: #18374f;
}
.audio-lab .wave-card button:hover {
  background: #244b6e;
  border-color: #244b6e;
}
.audio-lab .wave-card button[data-playing="true"] {
  background: #244b6e;
  border-color: #244b6e;
}
.wave-card canvas {
  display: block;
  width: 100%;
  flex: 1 1 0;
  height: 0;
  min-height: 96px;
}
.wave-layers {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 16px;
  border: 0;
  padding: 0;
  margin: 0;
  font-size: 0.67rem;
  color: var(--ink-soft);
  min-width: 0;
}
.wave-layers legend {
  position: absolute;
  width: 1px;
  height: 1px;
  clip-path: inset(50%);
  overflow: hidden;
}
.wave-layers label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 30px;
  cursor: pointer;
}
.wave-layers input {
  width: 15px;
  height: 15px;
  margin: 0;
  accent-color: #18374f;
  flex-shrink: 0;
}
.wave-layers span::before {
  content: "";
  display: inline-block;
  width: 13px;
  height: 3px;
  margin: 0 4px 3px 0;
  background: #91a5ad;
}
.wave-layers .layer-samples span::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
  border: 1.2px solid #286788;
  margin-bottom: 1px;
}
.wave-layers .layer-quantized span::before {
  background: #a14908;
}
.wave-layers .layer-reconstructed span::before {
  background: transparent;
  border-top: 2px dashed #76559b;
  height: 0;
}
.wave-layers small {
  font-size: 0.56rem;
}
.audio-lab .wave-card .wave-resize {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  width: 32px;
  height: 24px;
  min-height: 0;
  padding: 0;
  border-width: 1px 0 0 1px;
  border-radius: 8px 0 0;
  color: var(--ink-soft);
  background: var(--white);
  cursor: nwse-resize;
  touch-action: none;
}
.audio-lab .wave-card .wave-resize:hover {
  background: var(--blue-light, #eff6fb);
  border-color: var(--blue-strong);
}
.wave-resize-edge {
  position: absolute;
  z-index: 1;
  touch-action: none;
}
.wave-resize-edge:hover {
  background: rgba(37, 94, 119, 0.12);
}
.wave-resize-right {
  top: 12px;
  right: 0;
  bottom: 24px;
  width: 10px;
  cursor: ew-resize;
}
.wave-resize-bottom {
  left: 12px;
  right: 32px;
  bottom: 0;
  height: 10px;
  cursor: ns-resize;
}
@media (pointer: coarse) {
  .wave-resize-right {
    width: 16px;
  }
  .wave-resize-bottom {
    height: 16px;
  }
}
@container (max-width: 600px) {
  .wave-controls {
    gap: 8px;
  }
  .wave-range {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    font-size: 0.67rem;
  }
  .wave-range select {
    font-size: 0.7rem;
  }
  .wave-layers {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    flex: 1;
    gap: 2px 6px;
    font-size: 0.64rem;
  }
  .wave-layers span::before {
    width: 10px;
    margin-right: 3px;
  }
  .wave-title {
    gap: 6px;
  }
  .wave-title output {
    font-size: 0.58rem;
  }
  .wave-card h2 {
    font-size: 0.78rem;
  }
  .wave-card figcaption {
    gap: 6px;
  }
  .wave-card figcaption button {
    font-size: 0.64rem;
    padding: 3px 6px;
    min-height: 30px;
  }
}
.audio-playback {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
  font-size: 0.7rem;
  justify-content: flex-end;
}
.audio-lab[aria-busy="true"] .wave-card {
  opacity: 0.6;
}
#audio-status {
  flex: 1;
  color: var(--ink-soft);
}
#audio-status:empty {
  display: none;
}
#playback-position {
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  font-size: 0.65rem;
}
.audio-playback button {
  min-height: 28px;
  font-size: 0.7rem;
  padding: 3px 8px;
}
.audio-metrics {
  padding: 14px 16px;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}
.pcm-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.pcm-summary h2 {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.3;
}
.pcm-summary p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.7rem;
}
#pcm-size {
  white-space: nowrap;
  color: #18374f;
}
#pcm-size strong {
  font-size: 2rem;
  line-height: 1.2;
}
#pcm-size span {
  font-size: 0.85rem;
  margin-left: 2px;
}
.pcm-calculation {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 0.76rem;
  color: var(--ink-soft);
}
#pcm-bytes {
  font-weight: 700;
}
.audio-model {
  margin-top: 16px;
  color: var(--ink-soft);
  font-size: 0.76rem;
  line-height: 1.7;
}
.audio-model summary {
  cursor: pointer;
}
.audio-explanations {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 28px;
  margin-top: 14px;
}
.audio-explanations h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 0.85rem;
}
.audio-explanations p {
  margin: 0 0 8px;
}
.audio-size-formula {
  font-weight: 700;
}
.audio-model-note {
  border-top: 1px solid var(--line);
  padding-top: 10px;
  margin-top: 12px;
}
#combined-wave {
  cursor: grab;
  touch-action: none;
}
#combined-wave.is-panning {
  cursor: grabbing;
}
@media (max-width: 600px) {
  .audio-explanations {
    grid-template-columns: 1fr;
  }
}
.audio-lab :focus-visible,
.audio-heading :focus-visible,
.audio-model :focus-visible {
  outline: 3px solid var(--blue-strong);
  outline-offset: 3px;
}
.audio-lab [hidden] {
  display: none;
}
@media (max-width: 800px) {
  .audio-lab {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .audio-controls {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  .audio-panel {
    padding: 9px;
  }
  .bits-panel {
    align-items: start;
    flex-direction: column;
    gap: 5px;
  }
  .bits-panel .control-detail {
    margin-top: 3px;
  }
  .audio-stepper {
    width: 100%;
    justify-content: space-between;
  }
  .audio-visuals {
    grid-row: 2;
  }
}
@media (max-width: 500px) {
  .lab-shell {
    width: calc(100% - 24px);
  }
  .audio-heading {
    margin-bottom: 10px;
    gap: 6px;
  }
  .audio-heading h1 {
    font-size: 1.16rem;
  }
  .audio-actions {
    gap: 5px;
    font-size: 0.65rem;
  }
  .audio-actions input {
    width: 45px;
  }
  .audio-actions button {
    padding: 4px 6px;
    font-size: 0.65rem;
  }
  .audio-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .source-panel {
    grid-column: 1/-1;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 7px;
  }
  .source-panel label,
  .source-panel small {
    margin: 0;
  }
  .source-panel select {
    font-size: 0.7rem;
    padding: 6px 4px;
  }
  #tone-control {
    grid-column: 1/-1;
    margin: 0;
  }
  .bits-panel {
    flex-direction: row;
    align-items: center;
  }
  .audio-stepper {
    width: auto;
    gap: 5px;
  }
  .audio-stepper output {
    font-size: 1.25rem;
    min-width: 38px;
  }
  .audio-controls label {
    font-size: 0.7rem;
  }
  .rate-number input {
    font-size: 1.07rem;
    padding: 4px 6px;
  }
  .audio-stepper button {
    width: 30px;
    min-height: 30px;
  }
  .wave-card {
    padding: 7px 7px 20px;
    margin-top: 8px;
    height: 320px;
  }
  .wave-card figcaption {
    flex-wrap: wrap;
    gap: 6px;
  }
  .wave-card h2 {
    font-size: 0.78rem;
  }
  .wave-card figcaption button {
    font-size: 0.64rem;
    min-height: 30px;
    padding: 3px 6px;
  }
  #overview-wave {
    height: 28px;
  }
  .audio-playback {
    gap: 6px;
    font-size: 0.65rem;
  }
  #playback-position {
    font-size: 0.58rem;
  }
  .audio-metrics {
    padding: 12px;
  }
  #pcm-size strong {
    font-size: 1.7rem;
  }
  .pcm-summary h2 {
    font-size: 0.82rem;
  }
  .pcm-summary p {
    font-size: 0.6rem;
  }
  .pcm-calculation {
    font-size: 0.69rem;
  }
  .rate-stepper button {
    min-height: 30px;
    width: 30px;
  }
}