:root {
  --font-family: 'Segoe UI Variable Text', 'Segoe UI', -apple-system, sans-serif;
  --bg-app: #202020;
  --bg-sidebar: #181818;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-input: rgba(255, 255, 255, 0.06);
  --bg-input-hover: rgba(255, 255, 255, 0.09);
  --bg-card-border: rgba(255, 255, 255, 0.08);
  --accent-color: #60CDFF;
  --accent-button-bg: #0078D4;
  --accent-button-hover: #1886D7;
  --text-main: #FFFFFF;
  --text-secondary: #A0A0A0;
  --radius-corner: 12px;
  --radius-control: 6px;
  --radius-compact: 8px;
  --transition-speed: 0.25s cubic-bezier(0.1, 0.9, 0.2, 1);
  --duration-fast: 0.15s;
  --easing: cubic-bezier(0.1, 0.9, 0.2, 1);

  --lyric-active: #FFFFFF;
  --lyric-played: #FFFFFF;
  --lyric-unplayed: rgba(255, 255, 255, 0.45);
  --lyric-glow: rgba(255, 255, 255, 0.85);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
}

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
}

.page-view.hidden, .hidden {
  display: none !important;
}

.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
}

.win-navigation-pane {
  width: 240px;
  background-color: var(--bg-sidebar);
  padding: 12px 6px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--bg-card-border);
  flex-shrink: 0;
  transition: width var(--transition-speed);
  overflow: hidden;
  user-select: none;
}

.win-navigation-pane.collapsed {
  width: 54px;
}

.nav-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 2px 16px 2px;
}

.nav-toggle-btn {
  background: transparent;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-compact);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--transition-speed), transform 0.15s ease;
}

.nav-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle-btn:active {
  transform: scale(0.94);
}

.app-logo {
  width: 22px;
  height: 22px;
}

.app-title {
  font-weight: 600;
  font-size: 1rem;
  white-space: nowrap;
  opacity: 1;
  transition: opacity var(--transition-speed);
}

.win-navigation-pane.collapsed .app-title {
  opacity: 0;
  pointer-events: none;
}

.nav-links-wrapper {
  position: relative;
  flex: 1;
}

.nav-active-indicator {
  position: absolute;
  left: 2px;
  top: 0;
  width: 3px;
  height: 18px;
  background-color: var(--accent-color);
  border-radius: 3px;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.25s cubic-bezier(0.1, 0.9, 0.2, 1), opacity 0.2s ease;
  z-index: 10;
}

.win-navigation-pane.collapsed .nav-active-indicator {
  left: 1px;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 38px;
  padding: 0 10px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-compact);
  transition: background var(--transition-speed), color var(--transition-speed);
  font-size: 0.9rem;
  white-space: nowrap;
  position: relative;
}

.win-navigation-pane.collapsed .nav-link {
  justify-content: center;
  padding: 0;
  width: 40px;
  margin: 0 auto;
}

.nav-link .win-icon {
  flex-shrink: 0;
}

.nav-link .label {
  opacity: 1;
  transition: opacity var(--transition-speed);
}

.win-navigation-pane.collapsed .nav-link .label {
  opacity: 0;
  pointer-events: none;
  display: none;
}

.nav-link:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
}

.nav-link.active {
  background-color: rgba(255, 255, 255, 0.09);
  color: var(--accent-color);
  font-weight: 600;
}

.win-icon {
  width: 18px;
  height: 18px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

.win-icon-sm {
  width: 14px;
  height: 14px;
  filter: brightness(0) invert(1);
}

.nav-link.active .win-icon {
  filter: invert(40%) sepia(48%) saturate(1200%) hue-rotate(170deg) brightness(105%);
  opacity: 1;
}

.content-area {
  flex: 1;
  padding: 32px 40px;
  overflow-y: auto;
}

.page-view {
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.page-view.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 1.8rem;
  font-weight: 600;
}

.subtitle {
  color: var(--text-secondary);
  margin-top: 4px;
  font-size: 0.9rem;
}

.two-column-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.win-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-corner);
  padding: 20px;
  backdrop-filter: blur(20px);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
}

.card-header-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.hero-card {
  background: linear-gradient(135deg, rgba(0, 120, 212, 0.25) 0%, rgba(255, 255, 255, 0.03) 100%);
  border: 1px solid rgba(96, 205, 255, 0.3);
  padding: 28px 32px;
  margin-bottom: 32px;
}

.hero-content h2 {
  font-size: 1.45rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-main);
}

.hero-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 800px;
}

.section-container {
  margin-top: 28px;
}

.section-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-main);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.workflow-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 24px 20px;
  transition: transform var(--transition-speed), background var(--transition-speed);
}

.workflow-card:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-2px);
}

.step-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 26px;
  height: 26px;
  background: rgba(96, 205, 255, 0.15);
  border: 1px solid rgba(96, 205, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-color);
}

.win-icon-lg {
  width: 32px;
  height: 32px;
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
  opacity: 0.9;
}

.win-icon-md {
  width: 22px;
  height: 22px;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.workflow-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.workflow-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.action-card {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 24px;
  transition: transform var(--transition-speed), background var(--transition-speed), border-color var(--transition-speed);
}

.action-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(96, 205, 255, 0.4);
  transform: translateY(-2px);
}

.action-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.action-card-header h3 {
  font-size: 1rem;
  font-weight: 600;
}

.action-card-header p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 3px;
}

.workspace-top-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.dialog-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--bg-card-border);
  gap: 12px;
  flex-wrap: nowrap;
}

.dialog-actions .win-btn {
  white-space: nowrap;
  padding: 8px 14px;
  font-size: 0.85rem;
  line-height: 1.2;
}

.dialog-actions-left, .right-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.form-group.inline {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  margin-bottom: 0;
}

.form-row {
  display: flex;
  gap: 12px;
}

.flex-1 {
  flex: 1;
}

label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.win-input, .win-textarea, .win-select {
  background: var(--bg-input);
  border: 1px solid var(--bg-card-border);
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-control);
  color: var(--text-main);
  padding: 8px 12px;
  font-size: 0.9rem;
  outline: none;
  transition: all var(--transition-speed);
}

.win-input:hover, .win-textarea:hover, .win-select:hover {
  background: var(--bg-input-hover);
}

.win-input:focus, .win-textarea:focus, .win-select:focus {
  border-bottom-color: var(--accent-color);
  background: rgba(0, 0, 0, 0.3);
}

.win-textarea {
  resize: vertical;
  min-height: 120px;
}

.win-select option {
  background: #2B2B2B;
  color: var(--text-main);
}

.sm-input {
  width: 90px;
}

.win-toggle-switch-sm {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 18px;
}

.win-toggle-switch-sm input {
  opacity: 0;
  width: 0;
  height: 0;
}

.win-toggle-switch-sm .slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 18px;
  transition: .2s;
}

.win-toggle-switch-sm .slider:before {
  position: absolute;
  content: "";
  height: 12px;
  width: 12px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: .2s;
}

.win-toggle-switch-sm input:checked + .slider {
  background-color: var(--accent-button-bg);
}

.win-toggle-switch-sm input:checked + .slider:before {
  transform: translateX(18px);
}

.toggle-inline-label {
  font-size: 0.85rem;
  color: var(--text-main);
}

.slider-container {
  margin-bottom: 24px;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.fluent-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 24px;
  background: transparent;
  outline: none;
  cursor: pointer;
  --slider-fill: 0%;
  --accent-default: var(--accent-color);
  --track-fill: rgba(255, 255, 255, 0.2);
}

.fluent-slider::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, var(--accent-default) var(--slider-fill), var(--track-fill) var(--slider-fill));
  border-radius: 2px;
}

.fluent-slider::-moz-range-track {
  width: 100%;
  height: 4px;
  background: var(--track-fill);
  border-radius: 2px;
}

.fluent-slider::-moz-range-progress {
  background: var(--accent-default);
  height: 4px;
  border-radius: 2px;
}

.fluent-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 20px;
  width: 20px;
  border-radius: 50%;
  background: var(--accent-default);
  border: 4px solid rgb(55, 55, 55);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  margin-top: -8px;
  transition: transform var(--duration-fast) var(--easing), border-width 0.1s;
}

.fluent-slider:hover::-webkit-slider-thumb {
  transform: scale(1.1);
}

.fluent-slider:active::-webkit-slider-thumb {
  transform: scale(0.9);
  border-width: 6px;
}

.win-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--bg-card-border);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: var(--radius-control);
  font-size: 0.88rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.win-btn:hover {
  background: rgba(255, 255, 255, 0.14);
}

.win-btn.sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.win-btn.primary {
  background: var(--accent-button-bg);
  border-color: transparent;
}

.win-btn.primary:hover {
  background: var(--accent-button-hover);
}

.win-btn.lg {
  flex: 1;
  justify-content: center;
  padding: 10px 20px;
  font-weight: 600;
}

.win-btn.icon-only {
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.win-btn.icon-only.sm {
  width: 28px;
  height: 28px;
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

#btn-play-pause, #btn-rewind {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.btn-capture-word {
  width: 28px;
  height: 28px;
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.win-btn.danger {
  background: rgba(255, 67, 67, 0.15);
  border-color: rgba(255, 67, 67, 0.3);
  color: #FF4343;
}

.win-btn.danger:hover {
  background: rgba(255, 67, 67, 0.3);
}

.win-btn.accent-action:hover {
  border-color: var(--accent-color);
  background: rgba(96, 205, 255, 0.15);
}

.button-group-sm {
  display: flex;
  gap: 8px;
}

.code-block-wrapper {
  position: relative;
  width: 100%;
  margin-top: 8px;
}

.copy-code-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  z-index: 5;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-control);
  padding: 6px 10px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  transition: all 0.2s ease;
  backdrop-filter: blur(8px);
}

.copy-code-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  color: var(--text-main);
  border-color: var(--accent-color);
}

.copy-code-btn.copied {
  background: rgba(96, 205, 255, 0.2);
  color: var(--accent-color);
  border-color: var(--accent-color);
}

.code-preview, textarea.code-preview {
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-control);
  padding: 16px;
  font-family: 'Consolas', 'Cascadia Code', 'Courier New', monospace;
  font-size: 0.88rem;
  line-height: 1.5;
  color: #cec1ff;
  max-height: 280px;
  overflow: auto;
  white-space: pre;
  width: 100%;
  box-sizing: border-box;
  outline: none;
}

.code-preview code {
  font-family: inherit !important;
  font-size: inherit !important;
  color: inherit !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
}

.file-drop-zone {
  background: var(--bg-input);
  border: 2px dashed var(--bg-card-border);
  border-radius: var(--radius-corner);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-speed);
}

.file-drop-zone:hover {
  background: var(--bg-input-hover);
  border-color: var(--accent-color);
}

.hidden-input {
  display: none;
}

.audio-track-card {
  margin-bottom: 16px;
  padding: 16px 20px;
}

.audio-card-body {
  display: flex;
  align-items: center;
  gap: 20px;
}

.cover-art-dropzone {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-corner);
  background: rgba(0, 0, 0, 0.35);
  border: 2px dashed var(--bg-card-border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-speed);
}

.cover-art-dropzone:hover, .cover-art-dropzone.drag-active {
  border-color: var(--accent-color);
  background: rgba(0, 120, 212, 0.15);
}

.cover-art-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-art-img.placeholder {
  width: 28px;
  height: 28px;
  filter: brightness(0) invert(1);
  opacity: 0.5;
  object-fit: contain;
}

.dropzone-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s ease;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--accent-color);
  text-transform: uppercase;
}

.cover-art-dropzone:hover .dropzone-overlay,
.cover-art-dropzone.drag-active .dropzone-overlay {
  opacity: 1;
}

.audio-info-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.audio-file-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.file-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  background: rgba(96, 205, 255, 0.15);
  color: var(--accent-color);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(96, 205, 255, 0.3);
}

.audio-filename-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 400px;
}

.audio-meta-row {
  display: flex;
  gap: 12px;
}

.audio-meta-row .win-input.sm {
  flex: 1;
  font-size: 0.85rem;
  padding: 6px 10px;
}

.lyrics-setup-card {
  margin-bottom: 20px;
}

.sync-options-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--bg-card-border);
  gap: 12px;
  flex-wrap: wrap;
}

.options-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  flex: 1;
}

.options-left .form-group.inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.options-left .win-select,
.options-left .win-btn,
.options-left .win-input {
  height: 32px;
  padding: 4px 10px;
  font-size: 0.82rem;
}

.player-card {
  margin-bottom: 20px;
}

.player-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.time-display {
  font-family: 'Consolas', 'Courier New', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  width: 130px;
  flex-shrink: 0;
  text-align: center;
}

.waveform-container {
  flex: 1;
  min-width: 0;
}

.speed-selector-container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.lyrics-canvas-card {
  display: flex;
  flex-direction: column;
  height: 580px;
}

.canvas-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.hint-text {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

kbd {
  background: var(--bg-input);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--bg-card-border);
  font-family: monospace;
}

.sync-lyric-list {
  list-style: none;
  flex: 1;
  overflow-y: auto;
  padding-right: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sync-lyric-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-radius: var(--radius-control);
  background: var(--bg-input);
  border: 1px solid transparent;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

.sync-lyric-item.passed {
  opacity: 0.7;
}

.sync-lyric-item.active {
  background: rgba(0, 120, 212, 0.25);
  border-color: var(--accent-color);
  color: var(--text-main);
  font-weight: 600;
}

.sync-lyric-item.playing {
  color: var(--accent-color);
  border-color: rgba(96, 205, 255, 0.3);
  text-shadow: 0 0 10px rgba(96, 205, 255, 0.5);
}

.sync-lyric-item.vocalist-2 {
  justify-content: flex-end;
  text-align: right;
  border-right: 3px solid var(--accent-color);
}

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

.badge-bg, .badge-v2, .badge-inst {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge-inst {
  background: rgba(96, 205, 255, 0.15);
  color: var(--accent-color);
  border: 1px solid rgba(96, 205, 255, 0.3);
}

.sync-word.bg-word {
  font-style: italic;
  opacity: 0.85;
}

.preview-line.preview-instrumental {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 16px 0;
  min-height: 52px;
}

.inst-icon-wrapper {
  position: relative;
  width: 36px;
  height: 36px;
  display: inline-block;
  flex-shrink: 0;
  transform-origin: center center;
  transition: transform 0.3s ease;
}

.preview-line.preview-instrumental.line-active .inst-icon-wrapper {
  animation: instPulse 2.2s ease-in-out infinite;
}

@keyframes instPulse {
  0% {
    transform: scale(0.7);
  }
  50% {
    transform: scale(0.8);
  }
  100% {
    transform: scale(0.7);
  }
}

.inst-note-icon {
  width: 36px;
  height: 36px;
  display: block;
  filter: brightness(0) invert(1);
}

.inst-note-bg {
  opacity: 0.2;
}

.inst-note-fill-clip {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: var(--inst-progress, 0%);
  overflow: hidden;
  transition: height 0.08s linear;
}

.inst-note-fill-clip .inst-note-fg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 36px;
  filter: brightness(0) invert(1);
}

.preview-line.preview-instrumental.line-active .inst-icon-wrapper {
  filter: drop-shadow(0 0 10px #ffffff) drop-shadow(0 0 4px #ffffff);
}

.badge-bg {
  background: rgba(255, 185, 0, 0.2);
  color: #FFB900;
  border: 1px solid rgba(255, 185, 0, 0.4);
}

.badge-v2 {
  background: rgba(96, 205, 255, 0.2);
  color: var(--accent-color);
  border: 1px solid rgba(96, 205, 255, 0.4);
}

.line-inline-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.inline-action-btn {
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-control);
  opacity: 0.6;
  transition: opacity 0.15s ease, background-color 0.15s ease;
}

.sync-lyric-item:hover .inline-action-btn,
.sync-lyric-item:hover .edit-line-btn,
.sync-lyric-item:hover .delete-line-btn {
  opacity: 1;
}

.delete-line-btn, .edit-line-btn {
  width: 28px;
  height: 28px;
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.delete-line-btn.danger-inline:hover {
  background: rgba(255, 67, 67, 0.25);
  border-color: rgba(255, 67, 67, 0.5);
}

.inline-action-btn.active-bg {
  opacity: 1;
  background: rgba(255, 185, 0, 0.25);
  color: #FFB900;
  border-color: rgba(255, 185, 0, 0.5);
}

.word-container {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sync-word {
  padding: 2px 4px;
  border-radius: 4px;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  color: var(--text-secondary);
  transition: color 0.15s ease;
  cursor: pointer;
  background: transparent;
}

.sync-word:hover {
  color: var(--text-main);
}

.sync-word.active {
  background: transparent;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  color: var(--text-main);
  font-weight: 600;
}

.sync-word.passed,
.sync-word.word-ended {
  background: transparent;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  color: #60CDFF;
  font-weight: 600;
}

.sync-word.playing-word {
  background: #60CDFF !important;
  color: #000000 !important;
  font-weight: 700 !important;
  border-radius: 3px;
  box-shadow: 0 0 10px rgba(96, 205, 255, 0.8) !important;
}

.sync-word.flash-pulse {
  animation: wordEndPulse 0.5s ease;
}

@keyframes wordEndPulse {
  0% { background-color: #60CDFF; color: #000; transform: scale(1.15); }
  100% { transform: scale(1); }
}

.sync-control-bar {
  position: relative;
  display: flex;
  gap: 12px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--bg-card-border);
}

.sync-toast {
  position: absolute;
  top: -36px;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--accent-button-bg);
  color: #FFFFFF;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.1, 0.9, 0.2, 1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.sync-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.yaml-output-card {
  height: 580px;
  display: flex;
  flex-direction: column;
}

.yaml-output-card .code-preview {
  flex: 1;
  margin-bottom: 0;
}

.win-dialog {
  margin: auto;
  padding: 24px;
  background: #252528;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-corner);
  color: var(--text-main);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  min-width: 440px;
  max-width: 520px;
}

.win-dialog::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
}

.dialog-title {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.toggle-group-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}


.compact-drop-card {
  padding: 12px 16px;
  margin-bottom: 16px;
}

.compact-drop-container {
  display: flex;
  gap: 12px;
}

.compact-drop-zone {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--bg-input);
  border: 1px dashed var(--bg-card-border);
  border-radius: var(--radius-corner);
  padding: 12px 16px;
  cursor: pointer;
  transition: all var(--transition-speed);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.compact-drop-zone:hover, .compact-drop-zone.drag-active {
  background: var(--bg-input-hover);
  border-color: var(--accent-color);
  color: var(--text-main);
}

.apple-player-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: #111113;
  border: 1px solid var(--bg-card-border);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  min-height: 580px;
}

.ambient-glow-layer {
  position: absolute;
  inset: -100px;
  background: radial-gradient(circle at 20% 30%, var(--glow-c1, #421018) 0%, transparent 60%),
              radial-gradient(circle at 80% 70%, var(--glow-c2, #0d2847) 0%, transparent 60%),
              #08080a;
  filter: blur(80px);
  opacity: 0.85;
  transition: background 1.2s ease-in-out;
  pointer-events: none;
}

.apple-player-main {
  position: relative;
  z-index: 2;
  display: flex;
  flex: 1;
  padding: 32px 32px 12px 32px;
  gap: 40px;
  min-height: 0;
}

.apple-left-panel {
  width: 300px;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.apple-cover-wrapper {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 12px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  cursor: default;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.apple-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
}

.apple-cover-img.placeholder {
  object-fit: contain;
  padding: 60px;
  opacity: 0.3;
  filter: brightness(0) invert(1);
}

.apple-track-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.apple-title-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.3;
}

.apple-artist-text {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
}

.apple-right-panel {
  flex: 1;
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.apple-lyric-stream {
  height: 380px;
  overflow-y: auto;
  padding: 100px 32px 100px 16px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
  user-select: none;
}

.apple-lyric-stream::-webkit-scrollbar {
  display: none;
}

.preview-line {
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.3px;
  cursor: pointer;
  transform-origin: left center;
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.25),
              opacity 0.4s ease,
              filter 0.4s ease;
  word-break: break-word;
  overflow-wrap: break-word;
  max-width: 100%;
  padding-right: 16px;
}

.preview-line.line-inactive {
  opacity: 0.28;
  filter: blur(1px);
  transform: scale(0.96);
}

.preview-line.line-active {
  opacity: 1;
  filter: blur(0);
  transform: scale(1.03);
}

.lyric-word {
  display: inline;
  white-space: pre-wrap;
  color: var(--lyric-unplayed);
  transition: color 0.3s ease, filter 0.35s ease, opacity 0.3s ease, transform 0.2s ease;
  will-change: filter, transform;
}

.lyric-word:hover {
  color: var(--lyric-active) !important;
  text-shadow: 0 0 10px var(--lyric-glow);
}

.fill-effect-active .lyric-word {
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent !important;
  text-shadow: none !important;
  background-image: linear-gradient(90deg, var(--lyric-unplayed) 100%, var(--lyric-unplayed) 100%);
}

.fill-effect-active .line-active .word-unplayed {
  background-image: linear-gradient(90deg, var(--lyric-unplayed) 100%, var(--lyric-unplayed) 100%);
  filter: drop-shadow(0 0 0px transparent);
}

.fill-effect-active .line-active .word-active-sweep {
  background-image: linear-gradient(
    90deg,
    var(--lyric-active) 0%,
    var(--lyric-active) var(--word-progress, 0%),
    var(--lyric-unplayed) calc(var(--word-progress, 0%) + 8%),
    var(--lyric-unplayed) 100%
  );
  filter: drop-shadow(0 0 12px var(--lyric-glow));
}

.fill-effect-active .word-played {
  background-image: linear-gradient(90deg, var(--lyric-played) 100%, var(--lyric-played) 100%);
  filter: drop-shadow(0 0 6px var(--lyric-glow));
}

.bg-vocals {
  font-style: italic;
  opacity: 0.85;
}

.apple-controls-bar {
  position: relative;
  z-index: 10;
  background: rgba(18, 18, 20, 0.7);
  backdrop-filter: blur(24px);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 16px 32px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.apple-scrubber-container {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
}

.apple-slider {
  flex: 1;
}

.time-label {
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.6);
  font-family: 'Consolas', monospace;
  width: 42px;
  text-align: center;
}

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

.apple-volume-container {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 200px;
}

.volume-slider {
  width: 110px;
}

.apple-play-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.apple-play-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  transition: all 0.2s ease;
}

.apple-play-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.05);
}

.play-svg {
  width: 18px;
  height: 18px;
  filter: brightness(0) invert(1);
}

.apple-actions-container {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-end;
  width: auto;
  flex-shrink: 0;
}

.apple-actions-container .win-btn,
.apple-actions-container select {
  white-space: nowrap;
  flex-shrink: 0;
  height: 34px;
  padding: 0 12px;
  font-size: 0.82rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.apple-ctrl-btn {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.15s ease, transform 0.15s ease;
}

.apple-ctrl-btn:hover {
  color: #FFFFFF;
  transform: scale(1.08);
}

.preview-summary {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.15s ease;
}

.preview-summary:hover {
  color: var(--text-main);
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

.lrclib-search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.lrclib-search-bar input {
  flex: 1;
}

.lrclib-results-container {
  background: var(--bg-sidebar);
  border: 1px solid var(--bg-card-border);
  border-radius: var(--radius-control);
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: 16px;
}

.lrclib-result-item {
  padding: 8px 12px;
  cursor: pointer;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background var(--transition-speed);
}

.lrclib-result-item:last-child {
  border-bottom: none;
}

.lrclib-result-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

.lrclib-result-item .result-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
}

.lrclib-result-item .result-artist {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.lrclib-no-results {
  padding: 12px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
}

.words-editor-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 140px;
  overflow-y: auto;
  padding: 8px;
  background: var(--bg-input);
  border-radius: var(--radius-control);
  border: 1px solid var(--bg-card-border);
}

.word-edit-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.word-label {
  flex: 1;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--accent-color);
}

.timeline-marquee-box {
  position: absolute;
  border: 1px solid #60CDFF;
  background: rgba(96, 205, 255, 0.15);
  pointer-events: none;
  z-index: 100;
}

#timeline-ruler, #waveform-ruler-wrapper {
  cursor: ew-resize !important;
}

.inst-line-content {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}

.inst-label-text {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: rgba(255, 255, 255, 0.45);
  transition: color 0.3s ease, opacity 0.3s ease;
}

.preview-line.preview-instrumental.line-active .inst-label-text {
  color: #FFFFFF;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.6);
}

.preview-line.preview-instrumental.line-inactive .inst-label-text {
  opacity: 0.4;
}

.docs-nav-bar {
  position: sticky;
  top: -32px;
  z-index: 20;
  background: rgba(32, 32, 32, 0.85);
  backdrop-filter: blur(16px);
  padding: 10px 0;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--bg-card-border);
}

.docs-nav-pills {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.docs-nav-pills::-webkit-scrollbar {
  display: none;
}

.docs-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.84rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.docs-pill:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.2);
}

.docs-pill.active {
  background: rgba(96, 205, 255, 0.15);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.docs-content-wrapper {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.docs-card {
  padding: 24px;
  scroll-margin-top: 100px;
}

.docs-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--bg-card-border);
  padding-bottom: 10px;
}

.docs-card-header h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
}

.docs-card p {
  font-size: 0.92rem;
  line-height: 1.6;
  color: #DDD;
}

.docs-callout {
  padding: 16px 20px;
  border-radius: var(--radius-control);
  margin-top: 16px;
  font-size: 0.88rem;
  line-height: 1.5;
}

.docs-callout.note {
  background: rgba(0, 120, 212, 0.12);
  border-left: 4px solid var(--accent-button-bg);
  border-top: 1px solid var(--bg-card-border);
  border-right: 1px solid var(--bg-card-border);
  border-bottom: 1px solid var(--bg-card-border);
  color: #FFF;
}

.callout-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.workflow-steps {
  margin-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.docs-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 16px;
}

.docs-feature-item {
  background: var(--bg-input);
  padding: 16px;
  border-radius: var(--radius-control);
  border: 1px solid var(--bg-card-border);
}

.docs-feature-item h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--accent-color);
  margin-bottom: 8px;
}

.docs-feature-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.docs-list {
  margin-top: 12px;
  margin-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: #DDD;
}

.version-spec-card h3 {
  font-size: 1.05rem;
  color: var(--accent-color);
  margin-bottom: 4px;
}

.version-spec-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
  font-size: 0.88rem;
}

.docs-table th, .docs-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--bg-card-border);
}

.docs-table th {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  font-weight: 600;
}

.docs-table td {
  color: #CCC;
}