html,
body {
  overflow: hidden;
}

.karaoke-shell {
  display: grid;
  grid-template-rows: 54px auto minmax(0, 1fr) auto;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  overflow: hidden;
}

.karaoke-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  min-height: 0;
  overflow: hidden;
}

.karaoke-sidebar {
  display: grid;
  align-content: start;
  gap: 16px;
  min-height: 0;
  padding: 18px;
  overflow-x: hidden;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: var(--surface);
}

.track-panel,
.mix-panel,
.pipeline-panel {
  display: grid;
  gap: 14px;
}

.track-profile {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
}

.track-language,
.now-playing-mark {
  display: grid;
  place-items: center;
  border: 1px solid var(--lime);
  background: var(--lime);
  color: var(--lime-ink);
  font-weight: 800;
}

.track-language {
  width: 44px;
  height: 44px;
}

.track-profile > div:last-child {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.track-profile strong {
  overflow: hidden;
  color: var(--text-strong);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.track-profile span,
.mix-description {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.45;
}

.prepare-button {
  width: 100%;
}

.pipeline-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.pipeline-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-height: 45px;
  border-bottom: 1px solid var(--line);
  color: var(--faint);
}

.pipeline-list li:last-child {
  border-bottom: 0;
}

.pipeline-list li > span {
  font-size: 10px;
}

.pipeline-list li div {
  display: grid;
  gap: 3px;
}

.pipeline-list strong {
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}

.pipeline-list small {
  color: var(--faint);
  font-size: 9px;
}

.pipeline-list li.complete > span,
.pipeline-list li.complete strong,
.pipeline-list li.active > span,
.pipeline-list li.active strong {
  color: var(--lime);
}

.pipeline-list li.active small {
  color: var(--text);
}

.pipeline-status {
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-height: 24px;
  color: var(--muted);
  font-size: 10px;
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--warning);
}

.pipeline-status.loading .status-indicator {
  animation: karaoke-pulse 1s ease-in-out infinite;
}

.pipeline-status.ready {
  color: var(--lime);
}

.pipeline-status.ready .status-indicator {
  background-color: var(--lime);
}

.pipeline-status.ready #pipelineMessage {
  color: var(--lime);
  background: transparent;
}

.pipeline-status.error {
  color: var(--danger);
}

.pipeline-status.error .status-indicator {
  background-color: var(--danger);
}

.pipeline-status.error #pipelineMessage {
  color: var(--danger);
  background: transparent;
}

@keyframes karaoke-pulse {
  50% { opacity: 0.25; }
}

.credit-block {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 6px 10px;
  padding: 0 2px;
  color: var(--faint);
  font-size: 9px;
  line-height: 1.45;
}

.credit-block a {
  color: var(--muted);
}

.credit-block small {
  grid-column: 1 / -1;
}

.karaoke-stage {
  display: grid;
  grid-template-rows: 70px minmax(0, 1fr) 40px;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--canvas);
}

.stage-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-width: 0;
  padding: 12px 28px;
  border-bottom: 1px solid var(--line);
}

.stage-heading > div:first-child {
  min-width: 0;
}

.stage-heading h1 {
  margin: 5px 0 0;
  overflow: hidden;
  color: var(--text-strong);
  font-size: 16px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stage-state {
  flex: 0 0 auto;
  color: var(--warning);
  font-size: 11px;
  text-transform: uppercase;
}

.stage-state.ready {
  color: var(--lime);
}

.lyrics-viewport {
  min-height: 0;
  overflow: auto;
  scroll-behavior: smooth;
  scrollbar-color: var(--line-strong) transparent;
}

.lyrics {
  display: grid;
  align-content: center;
  gap: 0;
  width: min(940px, 100%);
  min-height: 100%;
  margin: 0 auto;
  padding: 80px 52px;
}

.lyric-line {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
  min-height: 82px;
  padding: 22px 16px;
  color: var(--muted);
  opacity: 0.62;
  transition: opacity 180ms ease, background 180ms ease;
}

.lyric-line.active {
  background: var(--surface-2);
  color: var(--text-strong);
  opacity: 1;
}

.lyric-line.adjacent {
  opacity: 0.72;
}

.lyric-word {
  position: relative;
  display: inline-block;
  min-width: 0;
  padding: 2px 0;
  overflow: hidden;
  background: transparent;
  color: inherit;
  font-size: 30px;
  line-height: 1.15;
  white-space: nowrap;
}

.lyric-word:focus-visible {
  outline: 1px solid var(--lime);
  outline-offset: 3px;
}

.lyric-word-fill {
  position: absolute;
  top: 2px;
  bottom: 2px;
  inset-inline-start: 0;
  width: 0;
  overflow: hidden;
  color: var(--lime-strong);
  pointer-events: none;
}

.lyric-word-fill > span {
  position: absolute;
  inset-inline-start: 0;
  display: block;
  width: max-content;
}

.lyric-word.active {
  color: var(--text-strong);
}

.lyric-word.inferred::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--warning);
  content: "";
  opacity: 0.65;
}

.stage-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 28px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 10px;
}

.karaoke-player {
  display: grid;
  grid-template-columns: minmax(140px, 0.7fr) auto minmax(180px, 1.5fr) minmax(90px, 0.4fr) minmax(240px, 0.8fr);
  align-items: center;
  gap: 16px;
  min-width: 0;
  padding: 12px 20px;
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.now-playing {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.now-playing-mark {
  width: 38px;
  height: 38px;
  font-size: 17px;
}

.now-playing div:last-child {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.now-playing strong,
.now-playing span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.now-playing strong {
  color: var(--text-strong);
  font-size: 11px;
}

.now-playing span {
  color: var(--muted);
  font-size: 9px;
}

.transport {
  display: flex;
  align-items: center;
  gap: 8px;
}

.transport-button,
.play-button {
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
}

.transport-button {
  width: 34px;
  height: 34px;
  font-size: 10px;
}

.play-button {
  width: 44px;
  height: 44px;
  border-color: var(--lime);
  background: var(--lime);
  color: var(--lime-ink);
  font-size: 15px;
}

.timeline,
.volume-control {
  display: grid;
  align-items: center;
  gap: 10px;
  min-width: 0;
  color: var(--muted);
  font-size: 9px;
}

.timeline {
  grid-template-columns: 38px minmax(0, 1fr) 38px;
}

.volume-control {
  grid-template-columns: auto minmax(70px, 1fr);
}

.timeline input,
.volume-control input {
  height: 22px;
  padding: 0;
  border: 0;
  accent-color: var(--lime);
}

@media (max-width: 900px) {
  .karaoke-shell {
    grid-template-rows: 50px auto minmax(0, 1fr) auto;
  }

  .karaoke-layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .karaoke-sidebar {
    padding: 12px;
  }

  .lyrics {
    padding: 48px 24px;
  }

  .lyric-line {
    min-height: 66px;
    gap: 8px 13px;
    padding: 18px 10px;
  }

  .lyric-word {
    font-size: 23px;
  }

  .karaoke-player {
    grid-template-columns: minmax(80px, 0.5fr) auto minmax(120px, 1fr) minmax(210px, 0.8fr);
    gap: 12px;
    padding: 12px;
  }

  .volume-control {
    display: none;
  }
}

@media (max-width: 680px) {
  .karaoke-shell {
    grid-template-rows: 48px auto minmax(0, 1fr) auto;
  }

  .karaoke-layout {
    display: block;
    overflow-y: auto;
  }

  .karaoke-sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    height: auto;
    overflow: visible;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .track-panel {
    grid-column: 1 / -1;
  }

  .mix-panel {
    grid-column: 1 / -1;
  }

  .pipeline-panel {
    grid-column: 1 / -1;
    gap: 0;
  }

  .pipeline-list {
    display: none;
  }

  .credit-block {
    display: none;
  }

  .karaoke-stage {
    height: 520px;
  }

  .stage-heading {
    padding: 10px 16px;
  }

  .stage-caption {
    padding: 0 16px;
  }

  .lyrics {
    padding: 38px 14px;
  }

  .lyric-word {
    font-size: 20px;
  }

  .karaoke-player {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-rows: auto 44px 30px;
  }

  .now-playing {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .transport {
    grid-column: 1;
    grid-row: 2;
  }

  .timeline {
    grid-column: 1 / -1;
    grid-row: 3;
  }
}

.singalong-control {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
}

.singalong-control[hidden] { display: none; }
.singalong-control input {
  flex: 1;
  min-width: 45px;
  width: 80px;
  height: 22px;
  padding: 0;
  accent-color: var(--lime);
}
.singalong-control output { min-width: 4ch; color: var(--lime); }
#singalongStatus:empty { display: none; }

.singalong-control label { white-space: nowrap; }
.karaoke-player:has(.singalong-control[hidden]) {
  grid-template-columns: minmax(140px, 0.7fr) auto minmax(180px, 1.5fr) minmax(90px, 0.4fr);
}
@media (min-width: 681px) and (max-width: 900px) {
  .singalong-control { font-size: 9px; }
  .karaoke-player:has(.singalong-control[hidden]) {
    grid-template-columns: minmax(80px, 0.5fr) auto minmax(120px, 1fr);
  }
}
@media (max-width: 680px) {
  .karaoke-player:has(.singalong-control[hidden]) {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .singalong-control {
    grid-column: 2;
    grid-row: 2;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0 8px;
    font-size: 10px;
  }
  .singalong-control label { grid-column: 1 / -1; }
  .singalong-control input { width: 100%; min-width: 0; }
}

/* Chinese lyric characters form phrases without Latin-style word gaps. */
[lang="zh"] .lyric-line {
  column-gap: 2px;
}

.karaoke-player { grid-template-columns: minmax(140px, .7fr) auto minmax(180px, 1.5fr); }
.mix-panel .volume-control { display: grid; grid-template-columns: 1fr; gap: 2px; margin-top: 12px; font-size: 12px; }
.mix-panel .singalong-control { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; margin-top: 12px; font-size: 12px; }
.mix-panel .singalong-control label, #singalongStatus { grid-column: 1 / -1; }
.mix-panel .singalong-control input { width: 100%; }
.upload-panel form { display: grid; gap: 12px; min-width: 0; }
.upload-panel form[hidden] { display: none; }
.upload-panel form + form { margin-top: 24px; }
.upload-panel input { max-width: 100%; }
#songFile {
  height: 40px;
  padding: 5px;
  overflow: hidden;
  color: var(--muted);
  font-size: 11px;
  line-height: 28px;
  text-overflow: ellipsis;
  cursor: pointer;
}
#songFile::file-selector-button {
  height: 28px;
  margin: 0 8px 0 0;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: var(--surface-2);
  color: var(--lime);
  font: inherit;
  font-weight: 600;
  line-height: 26px;
  vertical-align: top;
  cursor: pointer;
}
#songFile:not(:disabled):hover::file-selector-button {
  border-color: var(--lime);
  background: var(--surface-3);
}
#songFile:disabled,
#songFile:disabled::file-selector-button { cursor: not-allowed; }
.upload-panel small { color: var(--muted); line-height: 1.5; }
@media (max-width: 680px) {
  .upload-panel { grid-column: 1 / -1; }
  .karaoke-player { grid-template-columns: auto minmax(0, 1fr); }
}
.karaoke-sidebar { grid-auto-rows: max-content; }
#uploadStatus:empty, #youtubeSongStatus:empty { display: none; }