/* ==========================================================================
   Estilos de Vista Letra con Acordes Multi-Instrumento y Modos Visuales Anti-Fatiga
   ========================================================================== */

.lyrics-chords-container {
  --lyrics-font-scale: 1;
  --lyrics-font-size: 1.12rem;
  --chord-font-size: 0.95rem;
  --lyrics-line-height: 1.85;
  width: 100%;
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 16px 140px 16px;
  border-radius: 14px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, monospace;
  transition: background-color 0.3s ease, color 0.3s ease;
  position: relative;
}

/* ==========================================================================
   HUD Flotante de Modo Atril de Escenario (Stage Mode)
   ========================================================================== */
.stage-floating-hud {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 3000;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(14, 14, 20, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-strong);
  border-radius: 30px;
  padding: 6px 12px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.85);
  animation: stageHudSlideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes stageHudSlideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.btn-stage-exit {
  display: flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 82, 82, 0.18);
  border: 1px solid rgba(255, 82, 82, 0.4);
  color: #ff5252;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-stage-exit:hover {
  background: #ff5252;
  color: var(--text-primary);
  transform: scale(1.03);
}

.btn-stage-record {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-stage-record:hover {
  background: var(--border-strong);
}

.btn-stage-record.recording-active {
  background: rgba(255, 23, 68, 0.25);
  border-color: #ff1744;
  color: #ff5252;
}

.btn-stage-autoscroll {
  background: var(--accent-primary);
  border: none;
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-stage-autoscroll.active {
  background: #00e676;
  color: var(--text-inverse);
}

.stage-zoom-stepper {
  display: flex;
  align-items: center;
  background: var(--border-subtle);
  border-radius: 20px;
  overflow: hidden;
}

.btn-stage-zoom-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 800;
  padding: 5px 10px;
  cursor: pointer;
}

.btn-stage-zoom-btn:hover {
  background: var(--border-strong);
}

.stage-hud-font-badge {
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--text-secondary);
  padding: 0 4px;
  min-width: 36px;
  text-align: center;
}

/* ==========================================================================
   GALERÍA VISUAL DE DIAGRAMAS DE ACORDES AL INICIO DE LA CANCIÓN
   ========================================================================== */
.song-chords-visual-gallery {
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

body.theme-ivory .song-chords-visual-gallery,
.lyrics-chords-container.theme-paper .song-chords-visual-gallery {
  background: #fbfbfa;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.gallery-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 8px;
  flex-wrap: wrap;
  gap: 6px;
}

.gallery-title-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.gallery-badge-studio {
  font-size: 0.65rem;
  font-weight: 900;
  color: var(--accent-primary);
  letter-spacing: 1px;
}

.gallery-heading {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.gallery-tip {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.chords-visual-cards-grid {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 2px 8px 2px;
  scrollbar-width: thin;
}

.song-chord-visual-card {
  flex: 0 0 auto;
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 135px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

body.theme-ivory .song-chord-visual-card,
.lyrics-chords-container.theme-paper .song-chord-visual-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.song-chord-visual-card:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
}

.chord-card-diagram-box {
  width: 100%;
  display: flex;
  justify-content: center;
  transform: scale(0.82);
  transform-origin: top center;
  height: 145px;
  margin-bottom: -15px;
}

.chord-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  border-top: 1px solid var(--border-subtle);
  padding-top: 6px;
}

.chord-card-name {
  font-size: 0.88rem;
  font-weight: 900;
  color: var(--accent-secondary);
  font-family: var(--font-mono);
}

body.theme-ivory .chord-card-name,
.lyrics-chords-container.theme-paper .chord-card-name {
  color: #0b69a3;
}

.chord-card-action-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
}

.song-chord-visual-card:hover .chord-card-action-label {
  color: var(--accent-primary);
}

/* ==========================================================================
   GRABADOR DE ENSAYOS (Banner & Tarjeta de Reproducción)
   ========================================================================== */
.btn-quick-record-action {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 11px;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-quick-record-action:hover {
  background: var(--border-strong);
  border-color: #ff1744;
}

.btn-quick-record-action.recording-active {
  background: rgba(255, 23, 68, 0.2);
  border-color: #ff1744;
  color: #ff5252;
}

.record-red-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff1744;
  display: inline-block;
}

.recording-active .record-red-dot {
  animation: pulseDot 1s infinite alternate;
}

@keyframes pulseDot {
  from { transform: scale(0.8); opacity: 0.6; }
  to { transform: scale(1.3); opacity: 1; box-shadow: 0 0 8px #ff1744; }
}

.active-recording-bar {
  background: linear-gradient(135deg, rgba(255, 23, 68, 0.25) 0%, rgba(20, 20, 28, 0.95) 100%);
  border: 1px solid #ff1744;
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  animation: popoverFadeIn 0.15s ease-out;
}

/* ==========================================================================
   INTERPRETATION MODE GUIDER (TOCAR vs CANTAR)
   ========================================================================== */
.song-interpretation-guider {
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.08) 0%, rgba(56, 189, 248, 0.08) 100%);
  border: 1px solid rgba(255, 87, 34, 0.2);
  border-radius: 16px;
  padding: 14px 18px;
  margin: 12px 0 16px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
}

body.theme-ivory .song-interpretation-guider {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-color: rgba(255, 87, 34, 0.25);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.guider-prompt {
  display: flex;
  align-items: center;
  gap: 10px;
}

.guider-badge {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-primary);
  background: rgba(255, 87, 34, 0.12);
  padding: 2px 8px;
  border-radius: 6px;
}

.guider-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-primary);
}

.guider-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 600px) {
  .guider-buttons {
    grid-template-columns: 1fr;
  }
}

.btn-guider-choice {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-solid);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: left;
}

body.theme-ivory .btn-guider-choice {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
}

.btn-guider-choice:hover {
  transform: translateY(-2px);
  border-color: var(--accent-primary);
  box-shadow: 0 6px 20px rgba(255, 87, 34, 0.14);
}

.btn-guider-choice.active {
  border-color: var(--accent-primary);
  background: rgba(255, 87, 34, 0.08);
  box-shadow: 0 0 16px rgba(255, 87, 34, 0.18);
}

body.theme-ivory .btn-guider-choice.active {
  background: rgba(255, 87, 34, 0.06);
  border-color: #ff5722;
}

.guider-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.guider-text strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-primary);
}

.guider-text span {
  display: block;
  font-size: 0.76rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

/* ==========================================================================
   SINGER VOCAL RIBBON OVERLAY & MIC PERMISSION BANNER
   ========================================================================== */
.singer-vocal-ribbon {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(56, 189, 248, 0.12) 100%);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 16px;
  padding: 14px 20px;
  margin: 12px 0 16px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.12);
  flex-wrap: nowrap;
  overflow: hidden;
}

body.theme-ivory .singer-vocal-ribbon {
  background: linear-gradient(135deg, #ecfdf5 0%, #f0f9ff 100%);
  border-color: rgba(16, 185, 129, 0.35);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}

.ribbon-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ribbon-live-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
  animation: pulseDot 1s infinite alternate;
}

.ribbon-status-label {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-primary);
}

.ribbon-center {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ribbon-note-big {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
  min-width: 2ch;
  text-align: center;
}

.ribbon-freq-badge {
  font-size: 0.9rem;
  font-weight: 800;
  color: #10b981;
  background: rgba(16, 185, 129, 0.15);
  padding: 4px 10px;
  border-radius: 8px;
}

.ribbon-meter-track {
  width: 120px;
  height: 8px;
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  position: relative;
  overflow: hidden;
}

.ribbon-meter-center {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #10b981;
  transform: translateX(-50%);
}

.ribbon-meter-needle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 6px;
  background: var(--accent-primary);
  border-radius: 3px;
  transform: translateX(-50%);
  transition: left 0.08s ease-out;
}

.btn-ribbon-vocal-coach {
  background: #10b981;
  color: white;
  border: none;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 9px 14px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
  transition: all 0.2s ease;
}

.btn-ribbon-vocal-coach:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(16, 185, 129, 0.45);
}

/* Botón rango vocal */
.btn-ribbon-range-finder {
  background: rgba(167, 139, 250, 0.18);
  border: 1px solid rgba(167, 139, 250, 0.4);
  color: #a78bfa;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 9px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-ribbon-range-finder:hover {
  background: rgba(167, 139, 250, 0.28);
  transform: translateY(-1px);
}

/* ribbon-right flexbox */
.ribbon-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: auto;
}

/* ==========================================================================
   Colores de afinación en la cinta cantante (in-tune / near-tune / out-tune)
   ========================================================================== */
.singer-vocal-ribbon {
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Verde: dentro de ±15 cents */
.singer-vocal-ribbon.in-tune {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.18) 0%, rgba(52, 211, 153, 0.12) 100%);
  border-color: rgba(16, 185, 129, 0.5);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.2);
}

/* Naranja: 16-35 cents de desviación */
.singer-vocal-ribbon.near-tune {
  background: linear-gradient(135deg, rgba(251, 146, 60, 0.18) 0%, rgba(245, 158, 11, 0.12) 100%);
  border-color: rgba(251, 146, 60, 0.5);
  box-shadow: 0 4px 20px rgba(251, 146, 60, 0.2);
}

/* Rojo: >35 cents */
.singer-vocal-ribbon.out-tune {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.18) 0%, rgba(248, 113, 113, 0.10) 100%);
  border-color: rgba(239, 68, 68, 0.5);
  box-shadow: 0 4px 20px rgba(239, 68, 68, 0.18);
}

/* Color de la nota grande según afinación */
.ribbon-note-big { transition: color 0.25s ease; }
.ribbon-note-big.in-tune { color: #10b981; text-shadow: 0 0 16px rgba(16, 185, 129, 0.5); }
.ribbon-note-big.near-tune { color: #f59e0b; text-shadow: 0 0 16px rgba(245, 158, 11, 0.45); }
.ribbon-note-big.out-tune { color: #ef4444; text-shadow: 0 0 16px rgba(239, 68, 68, 0.4); }

/* ==========================================================================
   Escala Vertical de Notas (Singer Pitch Scale)
   ========================================================================== */
.singer-pitch-scale {
  position: relative;
  width: 44px;
  height: 72px;
  flex-shrink: 0;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  overflow: visible;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 2px 0;
}

.scale-label {
  font-size: 0.52rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
  user-select: none;
  letter-spacing: 0;
  line-height: 1;
}

/* Cursor animado dentro de la escala */
.singer-scale-cursor {
  position: absolute;
  left: 2px;
  right: 2px;
  height: 5px;
  border-radius: 3px;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  transition: top 0.12s cubic-bezier(0.16, 1, 0.3, 1), background 0.25s ease, box-shadow 0.25s ease;
  transform: translateY(-50%);
  pointer-events: none;
}

.singer-scale-cursor.in-tune {
  background: #10b981;
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.7);
}
.singer-scale-cursor.near-tune {
  background: #f59e0b;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.65);
}
.singer-scale-cursor.out-tune {
  background: #ef4444;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.6);
}

.mic-permission-warning-banner {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 14px;
  padding: 14px 18px;
  margin: 12px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.mic-warning-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mic-warning-icon {
  font-size: 1.5rem;
}

.mic-warning-info strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 800;
  color: #ef4444;
}

.mic-warning-info span {
  display: block;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.btn-request-mic-permission {
  background: #ef4444;
  color: white;
  border: none;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 10px 18px;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.35);
}

.btn-request-mic-permission:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(239, 68, 68, 0.5);
}

.rec-live-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-size: 0.85rem;
}

.rec-dot-pulsing {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff1744;
  animation: pulseDot 0.8s infinite alternate;
}

.btn-rec-stop-bar {
  background: #ff1744;
  color: var(--text-primary);
  border: none;
  font-weight: 800;
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-rec-stop-bar:hover {
  transform: scale(1.04);
  box-shadow: 0 0 12px rgba(255, 23, 68, 0.6);
}

.recording-playback-card {
  background: #111118;
  border: 1px solid rgba(0, 230, 118, 0.3);
  border-radius: 10px;
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}

.rec-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.rec-card-meta strong {
  font-size: 0.85rem;
  color: #00e676;
}

.rec-audio-element {
  height: 32px;
  outline: none;
}

.rec-card-actions {
  display: flex;
  gap: 8px;
}

.btn-rec-download {
  background: #00e676;
  color: var(--text-inverse);
  border: none;
  font-weight: 800;
  font-size: 0.78rem;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-rec-download:hover {
  transform: scale(1.04);
}

.btn-rec-dismiss {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
}

.btn-rec-dismiss:hover {
  color: var(--text-primary);
  border-color: #ff5252;
}

/* ==========================================================================
   Top HUD Fijo y Cabecera Principal con Título Prominente
   ========================================================================== */
.lyrics-top-hud {
  position: sticky;
  top: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface-solid, #14141e);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 14px;
  margin: -16px -16px 16px -16px;
  border-top-left-radius: 14px;
  border-top-right-radius: 14px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

body.theme-ivory .lyrics-top-hud,
.lyrics-chords-container.theme-paper .lyrics-top-hud {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.lyrics-hud-actions-scrollable {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1;
  min-width: 0;
}

.lyrics-hud-actions-scrollable > * {
  flex-shrink: 0;
}

.lyrics-hud-actions-scrollable::-webkit-scrollbar {
  display: none;
}

.lyrics-header-main-title-block {
  padding: 8px 0 16px 0;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
}

/* ==========================================================================
   Cabecera Principal Reestructurada: Jerarquía Visual de 2 Filas Lógicas
   ========================================================================== */
.lyrics-header-main {
  padding: 16px 20px 18px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface-solid);
  border-radius: 0 0 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 18px;
}

/* Fila 1: Navigation & Tools */
.lyrics-nav-tools-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  flex-wrap: wrap;
}

.btn-back-to-explore {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.86rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-back-to-explore:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateX(-2px);
}

.lyrics-header-tools-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.quick-tool-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.quick-tool-pill:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.quick-tool-pill select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  outline: none;
}

.quick-tool-pill select option {
  background: var(--bg-surface-solid);
  color: var(--text-primary);
}

.quick-tool-pill button {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 0.8rem;
  padding: 2px 4px;
}

.quick-tool-pill button:hover {
  color: var(--accent-primary);
}

.tool-capo .tool-label {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-primary);
  text-transform: uppercase;
}

.font-scale-text {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
  min-width: 32px;
  text-align: center;
}

.btn-more-options-circle {
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-more-options-circle:hover {
  background: var(--bg-surface-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ==========================================================================
   Herramientas de Navegación Superior (Fila 1)
   ========================================================================== */
.quick-tool-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface-raised, #ffffff);
  border: 1px solid var(--border-subtle, rgba(0, 0, 0, 0.08));
  padding: 0 12px;
  height: 36px;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-primary, #0f172a);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  user-select: none;
  box-sizing: border-box;
}

body.theme-ivory .quick-tool-pill {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.1);
  color: #111827;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.quick-tool-pill:hover {
  border-color: rgba(255, 87, 34, 0.4);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
}

/* Toggle Directo de Partitura */
.quick-tool-pill.tool-score-toggle {
  outline: none;
  background: var(--bg-surface-raised, #ffffff);
  color: var(--text-secondary, #475569);
}

.quick-tool-pill.tool-score-toggle:hover {
  color: var(--text-primary, #0f172a);
}

.quick-tool-pill.tool-score-toggle.active {
  background: linear-gradient(135deg, #ff5722, #ff7043) !important;
  color: #ffffff !important;
  border-color: #ff5722 !important;
  box-shadow: 0 3px 12px rgba(255, 87, 34, 0.35) !important;
}

/* Botón Directo de PDF */
.quick-tool-pill.tool-pdf-pill {
  outline: none;
}

.quick-tool-pill.tool-pdf-pill:hover {
  color: var(--accent-primary, #ff5722);
  border-color: var(--accent-primary, #ff5722);
}

.quick-tool-pill .tool-btn-icon {
  font-size: 0.95rem;
  line-height: 1;
}

.quick-tool-pill .tool-btn-label {
  font-weight: 800;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Fila 2: Hero Title y Barra Unificada de Modo e Instrumento
   ========================================================================== */
.lyrics-hero-row {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 20px;
  padding: 10px 0 6px 0;
  width: 100%;
  box-sizing: border-box;
}

.lyrics-hero-title-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  flex: 1;
  text-align: left;
}

.lyrics-song-title {
  font-family: var(--font-display, var(--font-serif, inherit));
  font-size: clamp(1.85rem, 3.8vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--text-primary, #0f172a);
  margin: 0 0 4px 0;
  text-align: left;
  word-break: break-word;
}

.lyrics-song-meta-line {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.lyrics-song-artist {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-primary, #ff5722);
}

.meta-dot-sep {
  color: var(--text-muted, #94a3b8);
  font-size: 0.85rem;
}

.lyrics-song-tuning {
  font-size: 0.88rem;
  color: var(--text-secondary, #64748b);
  font-weight: 600;
}

/* ==========================================================================
   Cluster Derecho: Toggle Real Deslizante (Switch Físico) e Instrumentos
   ========================================================================== */
.hero-right-controls {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Toggle Switch Físico con Pastilla Deslizante Real */
.ui-toggle-switch {
  all: unset;
  appearance: none;
  -webkit-appearance: none;
  box-sizing: border-box;
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 38px;
  width: 190px;
  background: var(--bg-surface-sunken, #f1f5f9);
  border: 1px solid var(--border-subtle, rgba(0, 0, 0, 0.1));
  border-radius: 9999px;
  padding: 3px;
  cursor: pointer;
  user-select: none;
  overflow: hidden;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.06);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

body.theme-ivory .ui-toggle-switch {
  background: #f1f5f9;
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

body.theme-dark .ui-toggle-switch,
body.theme-charcoal .ui-toggle-switch {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.4);
}

.ui-toggle-switch:hover {
  border-color: rgba(255, 87, 34, 0.45);
}

/* Pastilla Deslizante Física (Sliding Thumb) */
.toggle-slider-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: calc(50% - 3px);
  height: calc(100% - 6px);
  background: linear-gradient(135deg, #ff5722, #ff7043);
  border-radius: 9999px;
  box-shadow: 0 3px 10px rgba(255, 87, 34, 0.45), 0 1px 2px rgba(0, 0, 0, 0.12);
  transition: transform 0.28s cubic-bezier(0.34, 1.45, 0.64, 1);
  z-index: 1;
  pointer-events: none;
}

.ui-toggle-switch.is-play .toggle-slider-thumb {
  transform: translateX(0);
}

.ui-toggle-switch.is-sing .toggle-slider-thumb {
  transform: translateX(100%);
}

/* Etiquetas de Texto Tocar / Cantar */
.ui-toggle-switch .toggle-label {
  all: unset;
  appearance: none;
  -webkit-appearance: none;
  box-sizing: border-box;
  position: relative;
  z-index: 2;
  width: 50%;
  height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  transition: color 0.2s ease;
  white-space: nowrap;
  user-select: none;
}

body.theme-ivory .ui-toggle-switch .toggle-label {
  color: #64748b;
}

.ui-toggle-switch.is-play .opt-play {
  color: #ffffff !important;
  font-weight: 900;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

.ui-toggle-switch.is-sing .opt-sing {
  color: #ffffff !important;
  font-weight: 900;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

/* Cluster Unificado de Modo & Sub-opción */
.hero-mode-cluster {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 9999px;
  padding: 4px 6px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

body.theme-ivory .hero-mode-cluster {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

/* Conector puente visual que une "Tocar" con sus instrumentos */
.hero-suboption-bridge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  user-select: none;
  padding-left: 2px;
}

.suboption-bridge-arrow {
  font-size: 1.1rem;
  color: var(--accent-primary, #ff5722);
  font-weight: 900;
  line-height: 1;
}

.suboption-bridge-text {
  font-size: 0.70rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-primary, #ff5722);
  opacity: 0.92;
}

/* Indicador sutil para Modo Cantar */
.hero-sing-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 9999px;
  background: rgba(142, 68, 173, 0.15);
  border: 1px solid rgba(142, 68, 173, 0.35);
  color: #c084fc;
  font-size: 0.76rem;
  font-weight: 800;
  animation: fadeIn 0.2s ease;
}

body.theme-ivory .hero-sing-indicator {
  background: rgba(142, 68, 173, 0.1);
  border-color: rgba(142, 68, 173, 0.25);
  color: #7c3aed;
}

.hero-sing-indicator.is-hidden {
  display: none !important;
}

.sing-mic-icon {
  font-size: 0.88rem;
}

/* Extensión de Instrumento Integrada en Modo Tocar */
.hero-instrument-extension {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.hero-instrument-extension.is-expanded {
  opacity: 1;
  max-width: 420px;
  pointer-events: auto;
}

.hero-instrument-extension.is-collapsed {
  opacity: 0;
  max-width: 0;
  pointer-events: none;
  margin: 0;
  padding: 0;
}

.hero-instrument-selector {
  display: inline-flex;
  align-items: center;
  background: var(--bg-surface-sunken, #f1f5f9);
  border: 1px solid var(--border-subtle, rgba(0, 0, 0, 0.1));
  border-radius: 9999px;
  padding: 3px;
  gap: 3px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
}

body.theme-ivory .hero-instrument-selector {
  background: #f1f5f9;
  border-color: rgba(0, 0, 0, 0.1);
}

body.theme-dark .hero-instrument-selector,
body.theme-charcoal .hero-instrument-selector {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.btn-hero-inst-pill {
  all: unset;
  appearance: none;
  -webkit-appearance: none;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  height: 32px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
  white-space: nowrap;
}

.btn-hero-inst-pill:hover {
  color: var(--text-primary, #0f172a);
  background: rgba(0, 0, 0, 0.04);
}

body.theme-dark .btn-hero-inst-pill:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.btn-hero-inst-pill.active {
  background: #ffffff;
  color: var(--accent-primary, #ff5722) !important;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
  font-weight: 900;
}

body.theme-dark .btn-hero-inst-pill.active {
  background: rgba(255, 255, 255, 0.16);
  color: #ff7043 !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  font-weight: 900;
}

/* Responsivo para Móviles Estrechos (< 640px): Cabecera Compacta y Limpia */
@media (max-width: 640px) {
  .lyrics-header-main {
    gap: 8px !important;
    margin-bottom: 12px !important;
    padding: 0 4px;
  }

  /* Fila 1: Una sola línea limpia y ultra compacta */
  .lyrics-nav-tools-row {
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 8px !important;
    width: 100% !important;
  }

  .btn-back-to-explore {
    padding: 6px 10px !important;
    font-size: 0.8rem !important;
    border-radius: 10px !important;
    flex-shrink: 0 !important;
  }

  /* Ocultar herramientas secundarias en la barra móvil para que nunca ocupe 2-4 líneas; se acceden desde '···' */
  .lyrics-header-tools-group {
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    gap: 6px !important;
  }

  .desktop-header-tool,
  .lyrics-header-tools-group .tool-score-toggle,
  .lyrics-header-tools-group .tool-pdf-pill,
  .lyrics-header-tools-group .tool-capo,
  .lyrics-header-tools-group .tool-font {
    display: none !important;
  }

  .autoscroll-toolbar-cluster {
    flex-shrink: 0 !important;
  }

  .autoscroll-toolbar-cluster .quick-tool-pill {
    padding: 5px 10px !important;
    font-size: 0.78rem !important;
  }

  .btn-more-options-circle {
    width: 34px !important;
    height: 34px !important;
    flex-shrink: 0 !important;
  }

  /* Fila 2: Título + Barra Unificada de Modo e Instrumento */
  .lyrics-hero-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
    width: 100% !important;
  }

  .lyrics-hero-title-group {
    width: 100% !important;
  }

  .lyrics-song-title {
    font-size: 1.35rem !important;
    line-height: 1.25 !important;
    margin-bottom: 2px !important;
    white-space: normal !important;
    word-break: break-word !important;
  }

  .lyrics-song-meta-line {
    font-size: 0.78rem !important;
    flex-wrap: wrap !important;
  }

  /* Controles de Modo e Instrumento: bloque vertical apilado sin cortes */
  .hero-right-controls {
    width: 100% !important;
    overflow: visible !important;
    padding-bottom: 2px !important;
  }

  .hero-mode-cluster {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
    width: 100% !important;
  }

  .performance-mode-segmented-control {
    width: 100% !important;
    display: flex !important;
    justify-content: center !important;
  }

  .performance-mode-segmented-control .ui-toggle-switch {
    width: 100% !important;
    max-width: 260px !important;
    height: 34px !important;
    padding: 2px !important;
  }

  .performance-mode-segmented-control .toggle-label {
    font-size: 0.76rem !important;
    padding: 5px 8px !important;
  }

  /* Ocultar la flecha y texto '↳ Instrumento:' en móvil para ahorrar espacio crítico */
  .hero-suboption-bridge {
    display: none !important;
  }

  /* Instrumento: fila que siempre ocupa el 100% del ancho disponible */
  .hero-instrument-extension {
    display: flex !important;
    align-items: stretch !important;
    width: 100% !important;
    border-left: none !important;
    padding-left: 0 !important;
  }

  /* Contenedor de píldoras: grid de 3 columnas iguales, sin overflow */
  .hero-instrument-selector {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 4px !important;
    width: 100% !important;
    background: rgba(255, 255, 255, 0.06) !important;
    padding: 3px !important;
    border-radius: 10px !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
  }

  /* Cada píldora ocupa toda su celda centrada */
  .btn-hero-inst-pill {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4px !important;
    width: 100% !important;
    padding: 6px 4px !important;
    font-size: 0.72rem !important;
    border-radius: 8px !important;
    height: 30px !important;
  }

  .inst-pill-icon {
    font-size: 0.9rem !important;
  }

  .inst-pill-label {
    font-size: 0.72rem !important;
    font-weight: 700 !important;
    white-space: nowrap !important;
  }
}

.lyrics-song-meta-pills {
  display: flex;
  align-items: center;
  gap: 6px;
}

.capo-active-pill {
  background: rgba(255, 179, 0, 0.15);
  color: #ffb300;
  border-color: rgba(255, 179, 0, 0.4);
}

.transpose-active-pill {
  background: rgba(0, 229, 255, 0.15);
  color: #00e5ff;
  border-color: rgba(0, 229, 255, 0.4);
}

/* ==========================================================================
   Patrón de Rasgueo & Barra de Acordes Utilizados
   ========================================================================== */
.song-meta-rhythm-strip {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.strumming-pattern-card {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex-wrap: wrap !important;
  gap: 12px !important;
  background: var(--bg-surface-raised, #181424);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.08));
  border-radius: 14px;
  padding: 10px 18px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

body.theme-ivory .strumming-pattern-card {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
}

.strum-left-group {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.strum-badge {
  font-size: 0.70rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.22) 0%, rgba(255, 112, 67, 0.12) 100%);
  color: var(--accent-primary, #ff5722);
  border: 1px solid rgba(255, 87, 34, 0.4);
  padding: 4px 10px;
  border-radius: 6px;
  text-transform: uppercase;
}

.strum-pattern-arrows {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 8px !important;
  font-family: var(--font-mono, monospace);
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1;
}

.strum-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  transition: all 0.15s ease;
  user-select: none;
}

.strum-arrow.down {
  color: var(--accent-primary, #ff5722);
  text-shadow: 0 0 8px rgba(255, 87, 34, 0.4);
  background: rgba(255, 87, 34, 0.08);
}

.strum-arrow.up {
  color: var(--accent-secondary, #00e5ff);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
  background: rgba(0, 229, 255, 0.08);
}

.strum-arrow.pulse-active {
  transform: scale(1.3) translateY(-2px);
  background: var(--accent-primary, #ff5722);
  color: #ffffff;
  box-shadow: 0 0 16px rgba(255, 87, 34, 0.7);
}

.strum-gap-spacer {
  display: inline-block;
  width: 14px;
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 1px;
}

body.theme-ivory .strum-gap-spacer {
  background: rgba(0, 0, 0, 0.2);
}

.strum-right-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.strum-tempo-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--text-secondary);
}

.strum-dot-sep {
  opacity: 0.4;
}

.btn-audition-strumming {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 87, 34, 0.12);
  border: 1px solid rgba(255, 87, 34, 0.4);
  color: var(--accent-primary, #ff5722);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.18s ease;
}

.btn-audition-strumming:hover {
  background: var(--accent-primary, #ff5722);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(255, 87, 34, 0.35);
}

.btn-audition-strumming.playing {
  background: #22c55e;
  border-color: #22c55e;
  color: #ffffff;
  box-shadow: 0 0 14px rgba(34, 197, 94, 0.5);
}

.song-used-chords-bar {
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 12px 16px;
}

body.theme-ivory .song-used-chords-bar {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
}

.used-chords-label-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.used-chords-title {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text-primary);
}

.used-chords-chips-row {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.used-chord-pill {
  padding: 4px 10px;
  border-radius: 8px;
  cursor: pointer;
}

.chords-diagrams-accordion {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border-subtle);
}

.btn-toggle-diagrams-summary {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  cursor: pointer;
  user-select: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-toggle-diagrams-summary:hover {
  text-decoration: underline;
}

.chords-diagrams-accordion[open] .summary-caret {
  transform: rotate(180deg);
}

/* 1. Tema OLED Dark (Predeterminado - Negro Profundo) */
.lyrics-chords-container.theme-oled {
  background: #0e0e14;
  color: #f0f0f5;
}

.lyrics-chords-container.theme-oled .lyrics-word {
  color: #f0f0f5;
}

/* 2. Tema Ámbar Anti-Fatiga (Cálido para largas horas de ensayo) */
.lyrics-chords-container.theme-amber {
  background: #1c160e;
  color: #ffe6b3;
}

.lyrics-chords-container.theme-amber .lyrics-header-main {
  border-bottom-color: rgba(255, 179, 0, 0.2);
}

.lyrics-chords-container.theme-amber .lyrics-word {
  color: #ffe6b3;
}

.lyrics-chords-container.theme-amber .chord-badge {
  background: rgba(255, 179, 0, 0.15);
  border-color: rgba(255, 179, 0, 0.5);
  color: #ffb300;
}

.lyrics-chords-container.theme-amber .lyrics-song-title {
  color: #ffcc66;
}

/* 3. Tema Atril Papel Clásico (Máximo contraste tipo cancionero) */
.lyrics-chords-container.theme-paper {
  background: #fdfbf7;
  color: #1a1a1a;
}

.lyrics-chords-container.theme-paper .lyrics-header-main {
  border-bottom-color: rgba(0, 0, 0, 0.12);
}

.lyrics-chords-container.theme-paper .lyrics-song-title {
  color: #111111;
}

.lyrics-chords-container.theme-paper .lyrics-song-artist {
  color: #555555;
}

.lyrics-chords-container.theme-paper .lyrics-word {
  color: #111111;
  font-weight: 500;
}

.lyrics-chords-container.theme-paper .chord-badge {
  background: #f0ebe4;
  color: #873c24;
  border-color: rgba(135, 60, 36, 0.38);
  font-weight: 700;
  box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.lyrics-chords-container.theme-paper .chord-badge:hover {
  background: #873c24;
  color: #ffffff;
  border-color: #873c24;
}

.lyrics-chords-container.theme-paper .btn-instrument-select,
.lyrics-chords-container.theme-paper .btn-more-options,
.lyrics-chords-container.theme-paper .btn-transpose-step,
.lyrics-chords-container.theme-paper .font-scaler-group,
.lyrics-chords-container.theme-paper .autoscroll-control {
  color: #222222;
  border-color: rgba(0, 0, 0, 0.2);
  background: rgba(0, 0, 0, 0.04);
}

/* Barra de Guía Rápida - Cero Curva de Aprendizaje */
.lyrics-quick-help-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 10px 14px;
  margin: 10px 0 16px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  animation: fadeInDown 0.2s ease-out;
}

.lyrics-quick-help-bar .help-sparkle {
  font-size: 1.1rem;
  flex-shrink: 0;
  color: var(--accent-amber);
}

.lyrics-quick-help-bar .help-text {
  flex: 1;
}

body.theme-ivory .lyrics-quick-help-bar {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.08);
  color: #5e5a55;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03), 0 4px 12px rgba(0,0,0,0.02);
}

/* Dropdowns */
.dropdown-container {
  position: relative;
  display: inline-block;
}

.btn-instrument-select,
.btn-more-options {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-instrument-select:hover,
.btn-more-options:hover {
  background: var(--border-strong);
  border-color: var(--accent-primary);
}

.dropdown-caret {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 2px;
}

.instrument-dropdown-popup {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 100;
  background: #141420;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.85);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 200px;
  animation: popoverFadeIn 0.12s ease-out;
}

.more-options-dropdown-popup {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 100;
  background: #141420;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.85);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 240px;
  animation: popoverFadeIn 0.12s ease-out;
}

.btn-menu-stage-highlight {
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.2) 0%, rgba(255, 112, 67, 0.3) 100%) !important;
  border-color: var(--accent-primary) !important;
  color: #ffffff !important;
}

.btn-menu-stage-highlight:hover {
  background: var(--accent-primary) !important;
}

.btn-menu-vocal-highlight {
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.15), rgba(0, 229, 255, 0.15)) !important;
  border-color: rgba(255, 87, 34, 0.4) !important;
  color: var(--text-primary) !important;
  font-weight: 700 !important;
}

.btn-menu-vocal-highlight:hover {
  background: var(--accent-primary) !important;
  color: white !important;
}

.options-menu-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.options-menu-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.sel-options-input {
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  outline: none;
}

.btn-menu-action {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 7px 10px;
  color: var(--text-primary);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}

.btn-menu-action:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.btn-menu-action.active {
  background: #00e676;
  color: var(--text-inverse);
}

.options-viewmode-row {
  display: flex;
  background: #09090e;
  border-radius: 6px;
  padding: 2px;
  gap: 4px;
}

.btn-viewmode-choice {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 5px;
  border-radius: 4px;
  cursor: pointer;
}

.btn-viewmode-choice.active {
  background: var(--accent-primary);
  color: var(--text-primary);
}

.inst-option-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 8px 10px;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
  width: 100%;
}

.inst-option-card:hover {
  background: var(--border-subtle);
}

.inst-option-card.active {
  background: rgba(255, 87, 34, 0.15);
  border-color: var(--accent-primary);
}

.inst-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.inst-meta strong {
  font-size: 0.82rem;
  font-weight: 700;
}

.inst-meta span {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

/* Transposición */
.transpose-box {
  display: flex;
  align-items: center;
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 1px 3px;
}

.btn-transpose-step {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 0.88rem;
  font-weight: 800;
  padding: 5px 8px;
  cursor: pointer;
  border-radius: 4px;
  transition: all var(--transition-fast);
  touch-action: manipulation;
}

.btn-transpose-step:hover {
  background: var(--accent-primary);
  color: var(--text-primary);
}

.btn-transpose-reset {
  background: rgba(0, 229, 255, 0.15);
  border: 1px solid var(--accent-secondary);
  color: var(--accent-secondary);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 6px;
  border-radius: 4px;
  margin-left: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-transpose-reset:hover {
  background: var(--accent-secondary);
  color: #000000;
}

.transpose-value-display {
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--accent-secondary);
  min-width: 28px;
  text-align: center;
}

/* Patrón de Rasgueo en Galería */
.gallery-strumming-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 12px;
  gap: 10px;
  flex-wrap: wrap;
}

.strum-badge-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.strum-badge {
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.25) 0%, rgba(255, 112, 67, 0.15) 100%);
  color: var(--accent-primary);
  border: 1px solid rgba(255, 87, 34, 0.4);
  padding: 2px 7px;
  border-radius: 4px;
}

.strum-pattern-arrows {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 900;
}

.strum-arrow.down {
  color: var(--accent-primary);
  text-shadow: 0 0 6px var(--accent-primary-glow);
}

.strum-arrow.up {
  color: var(--accent-secondary);
  text-shadow: 0 0 6px var(--accent-secondary-glow);
}

.strum-space {
  display: inline-block;
  width: 6px;
}

.strum-tempo-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
}

.strum-dot-sep {
  opacity: 0.5;
}

/* Escalador de Tamaño de Fuente ([A-] 100% [A+]) */
.font-scaler-group {
  display: flex;
  align-items: center;
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  overflow: hidden;
}

.btn-font-scale-step {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 6px 9px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-font-scale-step:hover {
  background: var(--accent-primary);
}

.font-scale-percent-badge {
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--text-secondary);
  padding: 0 4px;
  min-width: 38px;
  text-align: center;
  font-family: var(--font-mono);
  transition: transform 0.15s ease, color 0.15s ease;
}

.zoom-pulse-anim {
  animation: zoomNumberPulse 0.2s ease-out;
  color: #00e5ff !important;
}

@keyframes zoomNumberPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); }
}

/* Auto-Scroll */
.autoscroll-control {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 3px 6px;
}

.btn-autoscroll-toggle {
  background: var(--accent-primary);
  border: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.78rem;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  touch-action: manipulation;
}

.btn-autoscroll-toggle.active {
  background: #00e676;
  color: var(--text-inverse);
}

.btn-autoscroll-step-btn {
  background: var(--border-subtle);
  border: 1px solid var(--border-strong);
  color: inherit;
  font-weight: 800;
  font-size: 0.85rem;
  width: 24px;
  height: 24px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  touch-action: manipulation;
}

.btn-autoscroll-step-btn:hover {
  background: var(--accent-primary);
  color: var(--text-primary);
}

.autoscroll-speed-slider {
  width: 65px;
  accent-color: var(--accent-primary);
  cursor: pointer;
}

.autoscroll-percent-badge {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--accent-secondary);
  min-width: 36px;
  text-align: center;
  background: rgba(0, 229, 255, 0.1);
  padding: 2px 5px;
  border-radius: 4px;
}

.chord-detected-active {
  background: #00e676 !important;
  color: #000000 !important;
  border-color: #00e676 !important;
  transform: scale(1.25) translateY(-4px) !important;
  box-shadow: 0 0 20px rgba(0, 230, 118, 0.9) !important;
}

/* ==========================================================================
   Lienzo de Letra con Acordes
   ========================================================================== */
.lyrics-content-body {
  line-height: var(--lyrics-line-height, 1.85);
  font-size: var(--lyrics-font-size, 1.12rem);
  user-select: text;
  padding-top: 8px;
  transition: font-size 0.15s ease, line-height 0.15s ease;
}

.lyrics-section-header {
  font-size: calc(var(--lyrics-font-size, 1.12rem) * 0.82);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-secondary);
  margin-top: 20px;
  margin-bottom: 10px;
  padding-bottom: 4px;
  border-bottom: 1px dashed var(--border-strong);
}

.lyrics-line {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 14px;
  line-height: var(--lyrics-line-height, 1.85);
}

.lyrics-word {
  font-size: var(--lyrics-font-size, 1.12rem);
}

.lyrics-chord-word-pair {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  margin-right: 4px;
}

.chord-badge {
  font-size: var(--chord-font-size, 0.95rem);
  font-weight: 800;
  color: var(--accent-primary);
  background: rgba(255, 87, 34, 0.15);
  border: 1px solid rgba(255, 87, 34, 0.4);
  border-radius: 5px;
  padding: 2px 7px;
  margin-bottom: 3px;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  touch-action: manipulation;
}

.chord-badge:hover {
  background: var(--accent-primary);
  color: var(--text-primary);
  box-shadow: 0 0 10px var(--accent-primary-glow);
  transform: translateY(-2px);
}

/* ==========================================================================
   Popover / Modal de Acorde Multi-Instrumento & Diccionario de Voicings
   ========================================================================== */
.chord-popover-card {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2500;
  background: linear-gradient(180deg, var(--bg-surface-raised, #1b162c) 0%, var(--bg-surface-solid, #120e20) 100%);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  padding: 16px 20px 20px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 92vw;
  max-width: 360px;
  max-height: 90vh;
  box-sizing: border-box;
  overflow-y: auto;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.chord-popover-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  width: 100%;
  gap: 12px;
  padding-bottom: 2px;
}

.chord-popover-title-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.chord-popover-badge {
  font-size: 0.65rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: var(--accent-primary, #ff5722);
  text-transform: uppercase;
}

.chord-popover-name {
  font-size: 1.75rem;
  font-weight: 900;
  margin: 0;
  color: var(--text-primary);
  line-height: 1.15;
}

.btn-popover-x-close {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 800;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-popover-x-close:hover {
  background: #ff5252;
  border-color: #ff5252;
  color: #ffffff;
  transform: scale(1.08);
}

/* Tabs de Instrumentos en el Modal */
.popover-inst-tabs {
  display: flex;
  background: var(--bg-surface-sunken, rgba(0, 0, 0, 0.45));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 3px;
  gap: 3px;
  width: 100%;
}

.btn-popover-inst {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary, rgba(255, 255, 255, 0.6));
  font-size: 0.8rem;
  font-weight: 800;
  padding: 7px 8px;
  border-radius: 9px;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.btn-popover-inst:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.btn-popover-inst.active {
  background: linear-gradient(135deg, var(--accent-primary, #ff5722), var(--accent-primary-hover, #ff7043));
  color: #ffffff !important;
  box-shadow: 0 3px 10px var(--accent-primary-glow, rgba(255, 87, 34, 0.35));
}

.btn-popover-inst .inst-tab-icon {
  font-size: 0.95rem;
}

/* Diagrama SVG en el Modal */
.chord-popover-diagram {
  background: var(--chord-diagram-bg, rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 10px;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
  transition: opacity 0.15s ease;
}

/* Sección de Posiciones en el Mástil / Inversiones (Acordeón Plegable) */
.chord-popover-voicings-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.voicings-accordion-wrap {
  display: flex;
  flex-direction: column;
  width: 100%;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
  transition: all 0.2s ease;
}

body.theme-ivory .voicings-accordion-wrap {
  background: #f8fafc;
  border-color: rgba(0, 0, 0, 0.08);
}

.voicings-fold-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  user-select: none;
  transition: background 0.15s ease;
}

.voicings-fold-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}

body.theme-ivory .voicings-fold-toggle:hover {
  background: rgba(0, 0, 0, 0.04);
}

.voicings-fold-left {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.voicings-section-title {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

.voicings-title-icon {
  font-size: 0.85rem;
}

.voicings-current-pill {
  font-size: 0.70rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(255, 87, 34, 0.15);
  color: var(--accent-primary, #ff5722);
  border: 1px solid rgba(255, 87, 34, 0.3);
}

.voicings-fold-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.voicings-more-text {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-secondary, #a1a1aa);
}

.voicings-chevron {
  font-size: 0.85rem;
  color: var(--accent-primary, #ff5722);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-block;
}

.voicings-collapsible-drawer {
  max-height: 400px;
  opacity: 1;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease, padding 0.2s ease;
  padding: 0 10px 10px;
}

.voicings-collapsible-drawer.is-folded {
  max-height: 0;
  opacity: 0;
  padding: 0 10px;
  pointer-events: none;
}

.voicings-cards-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
}

.btn-voicing-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: left;
  user-select: none;
}

.btn-voicing-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.btn-voicing-card.active {
  background: rgba(255, 87, 34, 0.12);
  border-color: var(--accent-primary, #ff5722);
  box-shadow: 0 0 14px rgba(255, 87, 34, 0.22);
}

.voicing-card-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.voicing-number-badge {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.74rem;
  font-weight: 900;
  flex-shrink: 0;
  transition: all 0.2s;
}

.btn-voicing-card.active .voicing-number-badge {
  background: var(--accent-primary);
  color: #ffffff;
}

.voicing-text-group {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.voicing-name {
  font-size: 0.84rem;
  font-weight: 800;
  color: var(--text-primary);
}

.voicing-detail {
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.voicing-active-check {
  font-size: 0.85rem;
  font-weight: 900;
  color: transparent;
  transition: color 0.2s;
}

.btn-voicing-card.active .voicing-active-check {
  color: var(--accent-primary);
}

/* Botón de Audición del Modal */
.chord-popover-footer {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 4px;
}

.btn-popover-audio {
  width: 100%;
  font-weight: 800;
  border: none;
  font-size: 0.82rem;
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.btn-popover-strum {
  background: linear-gradient(135deg, var(--accent-primary, #ff5722), var(--accent-primary-hover, #ff7043));
  color: #ffffff;
  box-shadow: 0 4px 14px var(--accent-primary-glow, rgba(255, 87, 34, 0.35));
}

.btn-popover-strum:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
  box-shadow: 0 6px 18px var(--accent-primary-glow, rgba(255, 87, 34, 0.5));
}

.btn-popover-arpeggio {
  background: linear-gradient(135deg, #0284c7, #06b6d4);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
}

.btn-popover-arpeggio:hover {
  transform: translateY(-1px);
  filter: brightness(1.1);
  box-shadow: 0 6px 18px rgba(6, 182, 212, 0.5);
}

.btn-popover-arpeggio.is-arpeggiating {
  animation: pulseArpeggio 0.6s infinite alternate;
}

@keyframes pulseArpeggio {
  from { box-shadow: 0 0 8px rgba(6, 182, 212, 0.4); }
  to { box-shadow: 0 0 22px rgba(6, 182, 212, 0.85); transform: scale(1.02); }
}

/* Stepper rápido de voicings / posiciones */
.popover-voicing-stepper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface-sunken, rgba(0, 0, 0, 0.35));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 4px 8px;
  gap: 8px;
  width: 100%;
  box-sizing: border-box;
}

body.theme-ivory .popover-voicing-stepper,
.lyrics-chords-container.theme-paper .popover-voicing-stepper {
  background: #f1efe8;
  border-color: rgba(0, 0, 0, 0.08);
}

.btn-voicing-step {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  width: 28px;
  height: 28px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

body.theme-ivory .btn-voicing-step,
.lyrics-chords-container.theme-paper .btn-voicing-step {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.1);
  color: #222222;
}

.btn-voicing-step:hover {
  background: var(--accent-primary, #ff5722);
  color: #ffffff;
  border-color: var(--accent-primary, #ff5722);
  transform: scale(1.08);
}

.voicing-stepper-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  min-width: 0;
}

.voicing-stepper-title {
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.voicing-stepper-sub {
  font-size: 0.68rem;
  color: var(--text-secondary, rgba(255, 255, 255, 0.6));
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

body.theme-ivory .voicing-stepper-sub,
.lyrics-chords-container.theme-paper .voicing-stepper-sub {
  color: #666666;
}

.btn-popover-audition {
  /* Mantener compatibilidad */
  composes: btn-popover-audio;
}

/* Modo Ivory / Paper para el Modal */
body.theme-ivory .chord-popover-card,
.lyrics-chords-container.theme-paper .chord-popover-card {
  background: linear-gradient(180deg, #ffffff 0%, #f7f6f2 100%);
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

body.theme-ivory .btn-popover-x-close,
.lyrics-chords-container.theme-paper .btn-popover-x-close {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.1);
  color: #333333;
}

body.theme-ivory .popover-inst-tabs,
.lyrics-chords-container.theme-paper .popover-inst-tabs {
  background: #eae8e1;
  border-color: rgba(0, 0, 0, 0.08);
}

body.theme-ivory .btn-popover-inst,
.lyrics-chords-container.theme-paper .btn-popover-inst {
  color: #666666;
}

body.theme-ivory .btn-voicing-card,
.lyrics-chords-container.theme-paper .btn-voicing-card {
  background: #f4f2ea;
  border-color: rgba(0, 0, 0, 0.08);
}

body.theme-ivory .btn-voicing-card:hover,
.lyrics-chords-container.theme-paper .btn-voicing-card:hover {
  background: #ece8dc;
  border-color: rgba(0, 0, 0, 0.15);
}

body.theme-ivory .btn-voicing-card.active,
.lyrics-chords-container.theme-paper .btn-voicing-card.active {
  background: rgba(255, 87, 34, 0.08);
  border-color: var(--accent-primary);
}

body.theme-ivory .voicing-number-badge,
.lyrics-chords-container.theme-paper .voicing-number-badge {
  background: rgba(0, 0, 0, 0.08);
  color: #222222;
}

/* Indicador y Ayuda Interactiva del Modal */
.chord-popover-interactive-hint {
  text-align: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-primary, #ff5722);
  background: rgba(255, 87, 34, 0.08);
  border: 1px dashed rgba(255, 87, 34, 0.28);
  border-radius: 8px;
  padding: 6px 10px;
  letter-spacing: 0.01em;
}

body.theme-ivory .chord-popover-interactive-hint,
.lyrics-chords-container.theme-paper .chord-popover-interactive-hint {
  background: rgba(255, 87, 34, 0.06);
  border-color: rgba(255, 87, 34, 0.2);
  color: #d84315;
}

.chord-interactive-key {
  transition: transform 0.1s ease;
}

.chord-interactive-key:hover .piano-key-rect {
  filter: brightness(1.2) drop-shadow(0 0 5px var(--accent-primary, #ff5722));
}

/* Desktop: Posicionar el modal flotando en el lateral derecho para no tapar la letra */
@media (min-width: 860px) {
  .chord-popover-card {
    top: 86px;
    right: 28px;
    left: auto;
    bottom: auto;
    transform: none;
    width: 324px;
    max-width: 336px;
    max-height: calc(100vh - 108px);
    box-shadow: -8px 24px 56px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(255, 255, 255, 0.1) inset;
    animation: popoverSlideInRight 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  }
}

@keyframes popoverSlideInRight {
  from {
    opacity: 0;
    transform: translateX(32px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

.stage-mode-view {
  background: var(--bg-app) !important;
  color: var(--text-primary) !important;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 9999;
  overflow-y: auto;
  padding: 30px 20px 100px 20px;
}

body.theme-ivory .stage-mode-view {
  background: #ffffff !important;
  color: #1a1a1a !important;
}

.stage-mode-view .stage-floating-hud {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  gap: 10px;
  background: var(--bg-surface-raised);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-strong);
  padding: 8px 16px;
  border-radius: 30px;
  z-index: 10000;
  box-shadow: var(--shadow-lg);
  align-items: center;
}
:root:has(.stage-mode-view) .bottom-nav-bar,
:root:has(.stage-mode-view) .top-app-bar {
  display: none !important;
}
@media print {
  body * {
    visibility: hidden;
  }
  .lyrics-chords-container, .lyrics-chords-container * {
    visibility: visible;
  }
  .lyrics-chords-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    background: #fff !important;
    color: #000 !important;
  }
  .lyrics-word, .lyrics-song-title, .lyrics-song-artist {
    color: #000 !important;
  }
  .chord-badge {
    color: #000 !important;
    background: #eee !important;
    border: 1px solid #ccc !important;
  }
  .lyrics-essential-toolbar, .song-chords-visual-gallery, .active-recording-bar, .recording-playback-card {
    display: none !important;
  }
  .stage-floating-hud {
    display: none !important;
  }
}
.more-options-dropdown-popup {
  padding: 16px !important;
  gap: 12px !important;
  min-width: 280px !important;
  background: var(--bg-surface-solid) !important;
  border: 1px solid var(--border-strong) !important;
  border-radius: 16px !important;
  box-shadow: 0 20px 50px rgba(0,0,0,0.4) !important;
}

body.theme-ivory .more-options-dropdown-popup,
body.theme-ivory .instrument-dropdown-popup,
.lyrics-chords-container.theme-paper .more-options-dropdown-popup,
.lyrics-chords-container.theme-paper .instrument-dropdown-popup {
  background: #ffffff !important;
  border-color: rgba(0, 0, 0, 0.15) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12) !important;
  color: #1a1a1a !important;
}

body.theme-ivory .btn-menu-action,
.lyrics-chords-container.theme-paper .btn-menu-action {
  color: #222222 !important;
  background: #f5f4ef !important;
  border-color: rgba(0,0,0,0.1) !important;
}

body.theme-ivory .btn-menu-action:hover,
.lyrics-chords-container.theme-paper .btn-menu-action:hover {
  background: #eae8dd !important;
}

.btn-menu-action {
  padding: 10px 14px !important;
  border-radius: 10px !important;
  margin-bottom: 2px;
}
.options-menu-row {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}
@keyframes popoverFadeIn {
  from { opacity: 0; transform: translateY(-10px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes chordModalFadeIn {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.95); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

.more-options-dropdown-popup {
  animation: popoverFadeIn 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards !important;
}

@media (max-width: 859px) {
  .chord-popover-card {
    animation: chordModalFadeIn 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  }
}

/* ==========================================================================
   PILL FLOTANTE DE AUTO-SCROLL ULTRA-ESTÉTICO
   ========================================================================== */
.autoscroll-floating-hud {
  position: fixed;
  bottom: 82px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2600;
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 20, 28, 0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 40px;
  padding: 6px 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 229, 255, 0.2);
  animation: autoscrollHudPop 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

body.theme-ivory .autoscroll-floating-hud,
.lyrics-chords-container.theme-paper .autoscroll-floating-hud {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(0, 0, 0, 0.14);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.12), 0 0 20px rgba(201, 42, 42, 0.15);
  color: #121212;
}

body.stage-mode-active .autoscroll-floating-hud {
  bottom: 28px;
}

@keyframes autoscrollHudPop {
  from { opacity: 0; transform: translate(-50%, 25px) scale(0.92); }
  to { opacity: 1; transform: translate(-50%, 0) scale(1); }
}

.hud-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 6px 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all var(--transition-fast);
}

body.theme-ivory .hud-btn,
.lyrics-chords-container.theme-paper .hud-btn {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.12);
  color: #1a1a1a;
}

.hud-btn:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.hud-btn-primary {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-hover) 100%);
  color: #ffffff !important;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--accent-primary-glow);
}

.hud-btn-primary.paused {
  background: #374151;
  box-shadow: none;
}

.hud-stepper-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  font-size: 0.9rem;
  font-weight: 900;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-raised);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

body.theme-ivory .hud-stepper-btn,
.lyrics-chords-container.theme-paper .hud-stepper-btn {
  background: #f0eee9;
  border-color: rgba(0, 0, 0, 0.15);
  color: #1a1a1a;
}

.hud-speed-badge {
  font-size: 0.78rem;
  font-weight: 900;
  font-family: var(--font-mono);
  min-width: 44px;
  text-align: center;
  color: var(--accent-secondary);
}

body.theme-ivory .hud-speed-badge,
.lyrics-chords-container.theme-paper .hud-speed-badge {
  color: #0b69a3;
}

.hud-btn-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 4px 6px;
  cursor: pointer;
  border-radius: 50%;
}

.hud-btn-close:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   MINIATURA PICTURE-IN-PICTURE (PiP) DE CÁMARA PARA ENSAYOS
   ========================================================================== */
.camera-pip-container {
  position: fixed;
  top: 75px;
  right: 20px;
  z-index: 2800;
  width: 200px;
  background: #000000;
  border: 2px solid var(--accent-primary);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.85), 0 0 20px var(--accent-primary-glow);
  display: flex;
  flex-direction: column;
  animation: autoscrollHudPop 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  touch-action: none;
}

.camera-pip-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
  background: rgba(14, 14, 18, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.72rem;
  font-weight: 800;
  color: #ffffff;
}

.camera-pip-video {
  width: 100%;
  height: 140px;
  object-fit: cover;
  background: #111;
  transform: scaleX(-1);
}

.camera-pip-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px;
  background: rgba(14, 14, 18, 0.9);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.camera-rec-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  font-weight: 800;
  color: #ff5252;
}

.btn-pip-close {
  background: transparent;
  border: none;
  color: #a0a0a0;
  cursor: pointer;
  font-size: 0.75rem;
}

.btn-pip-close:hover {
  color: #ffffff;
}

/* Premium Top Navbar Buttons */
.btn-top-action-pill {
  padding: 8px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-raised);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-top-action-pill:hover {
  background: var(--bg-surface-hover);
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(0,0,0,0.08);
}

.btn-song-top-metro.is-active {
  background: rgba(255, 87, 34, 0.18);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.top-metro-bpm-badge {
  font-size: 0.72rem;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 10px;
}

body.theme-ivory .top-metro-bpm-badge {
  background: rgba(0, 0, 0, 0.08);
}

.view-mode-pill-group {
  display: flex;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  overflow: hidden;
  padding: 2px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}

.view-mode-pill-btn {
  padding: 6px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: 18px;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.view-mode-pill-btn:hover {
  color: var(--text-primary);
}

.view-mode-pill-btn.active {
  background: var(--text-primary);
  color: var(--bg-base);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.btn-back-to-explore {
  padding: 8px 16px !important;
  border-radius: 20px !important;
  border: 1px solid var(--border-subtle) !important;
  background: var(--bg-surface-raised) !important;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04) !important;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1) !important;
}
.btn-back-to-explore:hover {
  background: var(--bg-surface-hover) !important;
  border-color: var(--border-strong) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 14px rgba(0,0,0,0.08) !important;
}

.btn-instrument-select, .btn-font-scale-step, .btn-lyrics-options {
  border-radius: 20px !important;
  border: 1px solid var(--border-subtle) !important;
  background: var(--bg-surface-raised) !important;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04) !important;
  transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1) !important;
  font-weight: 700 !important;
}
.btn-instrument-select:hover, .btn-font-scale-step:hover, .btn-lyrics-options:hover {
  background: var(--bg-surface-hover) !important;
  border-color: var(--border-strong) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 14px rgba(0,0,0,0.08) !important;
}

/* El contenedor nunca desborda el viewport */
.lyrics-chords-container {
  box-sizing: border-box;
  max-width: 100%;
  overflow-x: hidden;
}

/* Dropdowns: nunca salir por la derecha del viewport */
.more-options-dropdown-popup,
.instrument-dropdown-popup {
  right: 0;
  left: auto;
  max-width: calc(100vw - 32px);
  box-sizing: border-box;
}

/* En móviles pequeños: el toolbar hace scroll interno */
@media (max-width: 480px) {
  .lyrics-essential-toolbar {
    overflow-x: auto;
    overflow-y: visible;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
    gap: 8px;
  }
  .lyrics-essential-toolbar > * {
    flex-shrink: 0;
  }
  .lyrics-essential-toolbar::-webkit-scrollbar {
    display: none;
  }

  .lyrics-chords-container {
    padding-left: 10px;
    padding-right: 10px;
  }

  .lyrics-song-title {
    font-size: 1.1rem !important;
    white-space: normal !important;
    overflow: visible !important;
    text-overflow: unset !important;
    word-break: break-word !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    max-width: 100%;
  }

  .lyrics-title-nav-row {
    max-width: 100%;
    overflow: hidden;
  }

  .chords-visual-cards-grid {
    max-width: 100%;
  }
}

/* Mobile HUD layout: keep controls grouped and fully discoverable. */
@media (max-width: 600px) {
  .lyrics-top-hud {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 8px 10px;
  }

  .lyrics-top-hud > .btn-back-to-explore {
    align-self: flex-start;
    flex: 0 0 auto;
  }

  .lyrics-hud-actions-scrollable {
    flex: 0 0 auto;
    width: 100%;
    max-width: 100%;
    padding: 2px 0 4px;
    scroll-padding-inline: 4px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }

  .lyrics-hud-actions-scrollable > * {
    scroll-snap-align: start;
    scroll-snap-stop: always;
  }
}

/* Voicings Dictionary Styles */
.chord-popover-voicings {
  padding: 8px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(0,0,0,0.2);
  border-top: 1px solid rgba(255,255,255,0.05);
}
.voicings-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  font-weight: 700;
}
.voicings-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.btn-voicing {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
  padding: 6px 12px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}
.btn-voicing:hover {
  background: rgba(255,255,255,0.1);
}
.btn-voicing.active {
  background: var(--accent-primary, #00e5ff);
  color: #000;
  border-color: var(--accent-primary, #00e5ff);
  font-weight: 800;
}
#popoverDiagramBox {
  transition: opacity 0.2s ease;
}




/* ==========================================================================
   Voicings Dictionary & Interactive String Plucking Styles
   ========================================================================== */
.chord-popover-voicings {
  padding: 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

body.theme-ivory .chord-popover-voicings {
  background: #f8fafc;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.voicings-label {
  font-size: 0.72rem;
  color: var(--text-secondary, rgba(255, 255, 255, 0.5));
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.voicings-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.btn-voicing {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.75);
  padding: 6px 12px;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

body.theme-ivory .btn-voicing {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.12);
  color: #334155;
}

.btn-voicing:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

body.theme-ivory .btn-voicing:hover {
  background: #f1f5f9;
  color: #0f172a;
}

.btn-voicing.active {
  background: linear-gradient(135deg, #ff5722, #ff7043);
  color: #ffffff !important;
  border-color: #ff5722;
  font-weight: 800;
  box-shadow: 0 2px 8px rgba(255, 87, 34, 0.35);
}

#popoverDiagramBox {
  transition: opacity 0.2s ease;
}

.chord-popover-interactive-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 12px;
  margin: 0 16px 8px 16px;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-primary, #ff5722);
  background: rgba(255, 87, 34, 0.08);
  border: 1px solid rgba(255, 87, 34, 0.2);
  border-radius: 8px;
  animation: pulseHint 2s infinite ease-in-out;
}

@keyframes pulseHint {
  0%, 100% { opacity: 0.85; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.01); }
}

/* Efecto de pulsacion tactil sobre las cuerdas SVG */
.chord-interactive-string {
  cursor: pointer;
}

.chord-interactive-string:hover line {
  stroke: #ff5722 !important;
  stroke-width: 3.5 !important;
  filter: drop-shadow(0 0 6px rgba(255, 87, 34, 0.8));
}