/* ==========================================================================
   Estructura Global y Layout Mobile-First - Ultimate Guitar UX
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-main);
  background-color: var(--bg-app);
  color: var(--text-primary);
  user-select: none;
  -webkit-font-smoothing: antialiased;
  touch-action: manipulation;
}

button, a, input, select, textarea, .chord-badge, .btn-popover-inst, .lyrics-line, .lyrics-word, .tool-card-pro {
  touch-action: manipulation;
}

.app-root { display: flex; flex-direction: column; height: 100vh; width: 100vw; overflow: hidden; position: relative; }

/* ==========================================================================
   Barra Superior de Transporte
   ========================================================================== */
#transport-container {
  height: var(--topbar-height);
  background-color: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Barra de Metadatos de Canción
   ========================================================================== */
.song-info-strip {
  height: var(--songbar-height);
  background-color: rgba(12, 12, 16, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
  font-size: 0.84rem;
  z-index: 95;
}

.song-info-meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.song-info-title {
  font-weight: 800;
  font-size: 0.95rem;
  color: #ffffff;
}

.song-info-artist {
  color: var(--text-secondary);
  font-weight: 500;
}

.song-info-details {
  display: flex;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
}

/* ==========================================================================
   Cuerpo Central (Vistas Alternables & Viewport 90%)
   ========================================================================== */
.main-workspace {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
  background-color: var(--bg-viewport);
  width: 100%;
}

/* Contenedores de vista individuales */
.view-container {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--bg-viewport);
  -webkit-overflow-scrolling: touch;
}

/* Sidebar de Biblioteca en Móvil / Desktop */
#library-container {
  width: 100%;
  height: 100%;
  background-color: var(--bg-viewport);
  flex-shrink: 0;
}

/* Viewport con Scroll de la Partitura / Letra (90% del espacio) */
.score-viewport {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  background-color: var(--bg-viewport);
  padding: 12px 12px 180px 12px;
  display: block;
  position: relative;
}

#lyrics-chords-container {
  width: 100%;
  display: block;
}

/* Lienzo de AlphaTab */
#alphatab {
  width: 100%;
  max-width: 1150px;
  background-color: var(--bg-paper);
  box-shadow: var(--shadow-sheet);
  border-radius: 8px;
  padding: 16px;
  min-height: 500px;
}

/* Modo Zurdos para Mástil */
.fretboard-left-handed {
  transform: scaleX(-1);
}

.fretboard-left-handed .fret-marker-label {
  transform: scaleX(-1);
}

/* ==========================================================================
   Deck Inferior Oculto por Defecto (Mástil, Piano, Batería, Mezclador)
   ========================================================================== */
.bottom-dock {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  background-color: var(--bg-surface);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-top: 1px solid var(--glass-border);
  z-index: 180;
}

#fretboard-container {
  display: none;
  background-color: rgba(14, 14, 18, 0.95);
  border-top: 1px solid var(--border-subtle);
}

#mixer-container {
  display: none;
  background-color: var(--bg-surface-raised);
  border-top: 1px solid var(--glass-border);
}

#mixer-container.mixer-open {
  display: block;
}

#speedtrainer-container {
  position: absolute;
  top: 70px;
  right: 20px;
  z-index: 120;
  display: none;
}

#speedtrainer-container.open {
  display: block;
}

#tuner-container {
  position: absolute;
  top: 70px;
  left: 20px;
  z-index: 130;
  display: none;
}

#tuner-container.tuner-open {
  display: block;
}

#pro-toolbox-container {
  position: absolute;
  top: 70px;
  right: 20px;
  z-index: 135;
  display: none;
}

#pro-toolbox-container.toolbox-open {
  display: block;
}

/* Modales Flotantes */
#chord-modal-container,
#audio-sync-modal-container,
#export-modal-container {
  display: none;
}

#chord-modal-container.modal-open,
#audio-sync-modal-container.modal-open,
#export-modal-container.modal-open {
  display: block;
}

/* ==========================================================================
   Modo Atril / Stage Fullscreen Mode (Oculta absolutamente todo excepto la partitura)
   ========================================================================== */
body.stage-mode-active #bottom-nav-container,
body.stage-mode-active .bottom-nav-bar,
body.stage-mode-active .bottom-dock,
body.stage-mode-active #transport-container,
body.stage-mode-active .song-info-strip {
  display: none !important;
}

body.stage-mode-active .main-workspace {
  padding-bottom: 0 !important;
  margin-bottom: 0 !important;
}

body.stage-mode-active .score-viewport {
  padding: 16px 20px 80px 20px !important;
  background-color: var(--bg-app) !important;
}

body.stage-mode-active .lyrics-chords-container {
  max-width: 1000px !important;
  border-radius: 0 !important;
  padding: 16px 20px 120px 20px !important;
  box-shadow: none !important;
}

@media print {
  body, html {
    background: #ffffff !important;
    color: #000000 !important;
    overflow: visible !important;
    height: auto !important;
  }

  .app-root { display: flex; flex-direction: column; height: 100vh; width: 100vw; overflow: hidden; position: relative; }

  #transport-container,
  .song-info-strip,
  #library-container,
  #explore-view-container,
  #tools-view-container,
  .bottom-nav-bar,
  .bottom-dock,
  #speedtrainer-container,
  #tuner-container,
  #pro-toolbox-container,
  #toast-container,
  #chord-modal-container,
  #audio-sync-modal-container,
  #export-modal-container,
  #gig-mode-container {
    display: none !important;
  }

  .main-workspace {
    overflow: visible !important;
    height: auto !important;
  }

  .score-viewport {
    background: #ffffff !important;
    padding: 0 !important;
    overflow: visible !important;
    height: auto !important;
  }

  #alphatab {
    box-shadow: none !important;
    padding: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
    background: #ffffff !important;
    page-break-after: always;
  }
}
.top-app-bar {
  background: var(--bg-surface) !important;
  backdrop-filter: var(--glass-blur) !important;
  -webkit-backdrop-filter: var(--glass-blur) !important;
  border-bottom: 1px solid var(--border-subtle) !important;
  box-shadow: var(--shadow-sm) !important;
}
.explore-search-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-glow), 0 0 16px var(--accent-primary-glow);
  background: var(--bg-surface-solid);
}
.explore-search-input {
  transition: all 0.25s var(--ease-spring);
  border: 1px solid var(--border-strong);
  border-radius: 24px;
}
.tool-card {
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
  border: 1px solid rgba(255,255,255,0.05) !important;
}
.tool-card:hover {
  transform: translateY(-4px) scale(1.02) !important;
  box-shadow: 0 12px 30px rgba(0, 229, 255, 0.2) !important;
  border-color: rgba(0, 229, 255, 0.5) !important;
}
.tool-glass-card.collapsed > *:not(.tool-card-head) {
  display: none !important;
}
.tool-glass-card .collapse-icon {
  transition: transform 0.3s ease;
  font-size: 12px;
  opacity: 0.7;
}
.tool-glass-card.collapsed .collapse-icon {
  transform: rotate(-90deg);
}
.btn-card-fullscreen {
  background: rgba(255,255,255,0.1);
  border: none;
  color: white;
  border-radius: 4px;
  padding: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}
.btn-card-fullscreen:hover {
  background: rgba(255,255,255,0.25);
}
.tool-glass-card:fullscreen {
  background: #0d0d14 !important;
  padding: 40px !important;
  border-radius: 0 !important;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.tool-glass-card:fullscreen > *:not(.tool-card-head) {
  display: flex !important; /* Force expand in fullscreen */
}
.tool-glass-card:fullscreen .tool-card-head {
  margin-bottom: 40px;
}
.tool-glass-card:fullscreen .collapse-icon {
  display: none;
}
body { font-family: var(--font-sans); }
h1, h2, h3, .song-card-title, .lyrics-song-title { font-family: var(--font-sans); letter-spacing: 0; }
button, input, select, textarea { font: inherit; }
input, textarea, .lyrics-line { user-select: text; }
:focus-visible { outline: 2px solid var(--accent-primary); outline-offset: 3px; }
[hidden] { display: none !important; }
.app-root { height: 100dvh; width: 100%; }
.main-workspace { min-height: 0; }



.player-body { flex: 1; display: flex; flex-direction: column; overflow: hidden; width: 100%; }
#alphatab { flex: 1; width: 100%; max-width: 1200px; margin: 0 auto; overflow: auto; background: #fcfbf8; border-radius: 12px; box-shadow: 0 10px 40px rgba(0,0,0,0.15); border: 1px solid var(--border-subtle); padding: 20px; }

@media print {
  body * { visibility: hidden; }
  #alphatab,
  #alphatab *,
  #lyrics-chords-container,
  #lyrics-chords-container * { visibility: visible; }
  #alphatab {
    position: absolute;
    left: 0;
    top: 0;
    box-shadow: none;
    border: none;
  }
  #lyrics-chords-container {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
  }
  .lyrics-top-hud,
  .player-bottom-nav,
  .autoScrollOverlay,
  .sidebar { display: none !important; }
}