:root {
  /* Tells Chrome this page already manages its own light/dark palettes (our
     own theme picker), so it should not run its "auto dark mode" color
     inversion heuristic on top of it — that heuristic inverts colors per
     DOM node inconsistently, which is what was producing the mismatched
     black/white rows reported on Android. */
  color-scheme: light dark;
  --bg: #1b1410;
  --bg-elevated: #261d17;
  --card: #2e2219;
  --text: #f3e9dc;
  --text-dim: #c7b6a3;
  --accent: #e0793c;
  --accent-dim: #8a4c25;
  --favorite: #f2c14e;
  --border: #44332688;
  --chord-color: #f2b94e;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* Theme: fundo preto, letra branca, acorde verde */
body.theme-dark-green {
  --bg: #121212;
  --bg-elevated: #1c1c1c;
  --card: #262626;
  --text: #f5f5f5;
  --text-dim: #a8a8a8;
  --border: #3a3a3a88;
  --chord-color: #4fd166;
}

/* Theme: fundo branco, letra preta, acorde vermelho */
body.theme-light-red {
  --bg: #ffffff;
  --bg-elevated: #f3f3f3;
  --card: #ececec;
  --text: #000000;
  --text-dim: #5c5c5c;
  --accent: #1565c0;
  --accent-dim: #90b8e0;
  --border: #d8d8d888;
  --chord-color: #c62828;
}

/* Theme: original (laranja/âmbar sobre marrom escuro) */
body.theme-warm {
  --chord-color: #f2b94e;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
  overflow-x: hidden;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 100dvh;
  background: var(--bg);
}

.header {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 2px;
  padding: calc(15px + var(--safe-top)) 10px 15px 18px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}

.header h1 {
  font-size: 2.095rem;
  margin: 0 4px 0 0;
  font-weight: 600;
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.header .icon-btn {
  flex: 0 0 auto;
  padding: 6px 5px;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.530rem;
  padding: 8px 8px;
  border-radius: 10px;
  cursor: pointer;
  line-height: 1;
}
.icon-btn:active { background: var(--card); }

.tabbar {
  display: flex;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.tabbar button {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.224rem;
  padding: 10px 4px 12px;
  border-bottom: 3px solid transparent;
  cursor: pointer;
}
.tabbar button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.seg-control {
  display: flex;
  gap: 6px;
  padding: 8px 16px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.seg-control button {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 1.02rem;
  padding: 8px 4px;
  cursor: pointer;
}
.seg-control button.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.banco-hint {
  padding: 8px 16px;
  font-size: 0.984rem;
  color: var(--text-dim);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.banco-hint button {
  margin-top: 4px;
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.984rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  padding: 2px;
}

.content {
  flex: 1 1 auto;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: calc(16px + var(--safe-bottom));
  /* Forces its own GPU compositing layer. Some Android WebViews reuse stale
     raster tiles from a previous paint when a long list (hundreds of rows)
     is inserted in one shot, leaving rows with no theme styling applied
     until something forces a repaint; promoting the scroller to its own
     layer avoids that tile reuse. */
  transform: translateZ(0);
}

.search-bar {
  padding: 10px 16px;
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 5;
}
.search-bar input {
  width: 100%;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 1rem;
}

.list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  /* Explicit background, not just inherited: on long lists (taller than one
     viewport), body's own painted box only covers one viewport's height, so
     content further down was showing the <html> element's background
     through these rows instead — and <html> never picks up the per-theme
     --bg override (that custom property is scoped to body.theme-*, which is
     a descendant of html, not an ancestor it can affect). This is the real
     cause of the black/white banding reported on Android. */
  background: var(--bg);
}
.list-item:active { background: var(--card); }
.list-item .main { flex: 1; min-width: 0; }
.list-item .title { font-size: 1.05rem; font-weight: 500; }
.songbook-tag { font-size: 0.8em; opacity: 0.85; }
.list-item .subtitle { font-size: 0.89rem; color: var(--text-dim); margin-top: 2px; }
.list-item .meta { font-size: 0.8rem; color: var(--text-dim); }
.list-item .chev { color: var(--text-dim); }

.load-more-btn {
  width: 100%;
  display: block;
  text-align: center;
  background: none;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
}
.load-more-btn:active { background: var(--card); }

.star-btn {
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
}
.star-btn.active { color: var(--favorite); }

.lib-checkbox {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  accent-color: var(--accent);
  cursor: pointer;
}

.icon-btn-sm {
  background: none;
  border: none;
  font-size: 1.05rem;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
}

.section-title {
  padding: 16px 16px 6px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.empty-state {
  padding: 40px 24px;
  text-align: center;
  color: var(--text-dim);
}

/* Viewer */
.viewer {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.viewer-handle {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  background: var(--bg-elevated);
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 1rem;
  padding: 12px 16px;
  padding-top: calc(12px + var(--safe-top));
  cursor: pointer;
  flex: 0 0 auto;
  text-align: left;
}
.handle-arrow { flex: 0 0 auto; font-size: 0.95rem; }
.handle-title {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.viewer-header {
  padding: calc(10px + var(--safe-top)) 14px 10px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.viewer-header.collapsed { display: none; }
.viewer-header .top-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.viewer-header .title-block { flex: 1; min-width: 0; }
.viewer-header .song-title {
  font-size: 1.47rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.viewer-header .song-artist {
  font-size: 1.02rem;
  color: var(--text-dim);
}
.viewer-controls {
  display: flex;
  gap: 6px;
  align-items: center;
  padding-top: 8px;
  flex-wrap: wrap;
}
.pill-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 20px;
  padding: 6px 12px;
  font-size: 0.82rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}
.pill-btn.on { background: var(--accent-dim); border-color: var(--accent); color: #fff; }

.cifra-area {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 18px 16px calc(80px + var(--safe-bottom));
  position: relative;
}
.cifra-text {
  white-space: pre;
  font-family: "SF Mono", "Menlo", "Courier New", monospace;
  line-height: 1.55;
  tab-size: 4;
}
.cifra-text.two-col {
  column-count: 2;
  column-gap: 28px;
}
.cifra-text .chord-line {
  display: block;
  color: var(--chord-color);
  font-weight: 800;
  break-after: avoid-column;
  break-inside: avoid;
}
.cifra-text .lyric-line {
  display: block;
  color: var(--text);
  font-weight: 700;
}
.chord-tok {
  cursor: pointer;
  border-radius: 4px;
  padding: 0 1px;
}
.chord-tok:active { background: var(--accent-dim); }
.chord-tok-invalid { text-decoration: underline dotted; text-decoration-color: var(--favorite); text-underline-offset: 3px; }
.chord-tok-nodiagram { color: #1565c0 !important; }
.chord-frac {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  vertical-align: middle;
  font-size: 0.62em;
  line-height: 0.95;
  margin: 0 1px;
}

.chord-modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 50;
}
.chord-modal-backdrop.show { display: block; }
.chord-modal {
  display: none;
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  z-index: 55;
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  color: var(--text);
  max-width: 90vw;
}
.chord-modal.show { display: block; }
.chord-modal-title {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.chord-modal-diagrams {
  display: flex;
  gap: 14px;
  justify-content: center;
}
.chord-diagram { color: var(--text); }
.chord-modal-empty { color: var(--text-dim); font-size: 0.85rem; padding: 10px; }

.app-dialog-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 90;
  align-items: center;
  justify-content: center;
}
.app-dialog-backdrop.show { display: flex; }
.app-dialog {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px 20px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  color: var(--text);
  width: 320px;
  max-width: 88vw;
}
.app-dialog-msg { font-size: 0.95rem; margin-bottom: 14px; white-space: pre-wrap; }
.app-dialog-input {
  width: 100%;
  padding: 9px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 14px;
}
.app-dialog-actions { display: flex; justify-content: flex-end; gap: 10px; }

.theme-picker {
  position: fixed;
  right: 14px;
  top: calc(84px + var(--safe-top));
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 6px;
  z-index: 20;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.theme-picker.show { display: flex; }
.theme-opt {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text);
  background: var(--bg);
}
.theme-opt.active { outline: 2px solid var(--accent); }
.theme-swatch {
  width: 16px; height: 16px; border-radius: 4px; flex: 0 0 auto;
}
.cifra-empty {
  color: var(--text-dim);
  padding: 40px 10px;
  text-align: center;
  line-height: 1.6;
}
.cifra-meta {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.repertorio-nav {
  position: sticky;
  bottom: 0;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding: 10px 14px calc(10px + var(--safe-bottom));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex: 0 0 auto;
}
.repertorio-nav .idx { font-size: 0.85rem; color: var(--text-dim); }
.repertorio-nav button {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 18px;
  font-size: 0.95rem;
}
.repertorio-nav button:disabled { opacity: 0.35; }

.player-bar {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  padding: 10px 14px calc(10px + var(--safe-bottom));
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: center;
}
.tom-group {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.tom-label { font-size: 0.715rem; color: var(--text-dim); }

.font-group {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.font-label { font-size: 0.715rem; color: var(--text-dim); }
.speed-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.speed-label { font-size: 0.715rem; color: var(--text-dim); }
.stepper {
  display: flex;
  align-items: center;
  gap: 10px;
}
.stepper button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}
.stepper button:active { background: var(--accent-dim); }
.stepper-val { min-width: 20px; text-align: center; font-weight: 600; }

.rolagem-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
}
.rolagem-btn.on { background: var(--accent); color: #fff; border-color: var(--accent); }


/* Display settings drawer */
.settings-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 35;
}
.settings-backdrop.show { display: block; }
.settings-drawer {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--card);
  border-top: 1px solid var(--border);
  border-radius: 18px 18px 0 0;
  padding: 16px 18px calc(18px + var(--safe-bottom));
  z-index: 40;
  transform: translateY(100%);
  transition: transform 0.25s ease;
  max-height: 70vh;
  overflow-y: auto;
}
.settings-drawer.show { transform: translateY(0); }
.settings-drawer h3 {
  margin: 0 0 14px;
  font-size: 1rem;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  gap: 10px;
}
.settings-row:last-of-type { border-bottom: none; }
.settings-row-label { font-size: 0.9rem; color: var(--text-dim); flex: 0 0 auto; }
.font-family-opts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 0;
}
.font-family-opt {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 0.85rem;
  cursor: pointer;
}
.font-family-opt.active { border-color: var(--accent); color: var(--accent); font-weight: 600; }

.settings-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 16px;
  position: relative;
}
.settings-card.accent { border: 2px solid var(--accent); }
.settings-card h3 { margin: 0 0 2px; font-size: 1rem; }
.settings-card .card-subtitle { font-size: 0.82rem; color: var(--text-dim); margin-bottom: 14px; }
.settings-card .card-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.font-preview-box {
  background: var(--bg-elevated);
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 16px;
}
.font-preview-label { font-size: 0.68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 8px; }
.font-preview-chord { color: var(--chord-color); font-weight: 800; white-space: pre; }
.font-preview-lyric { color: var(--text); font-weight: 700; }

.slider-row { margin-bottom: 18px; }
.slider-row:last-child { margin-bottom: 0; }
.slider-row-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin-bottom: 8px;
}
.slider-row-head .stepper-val { color: var(--text); font-weight: 700; }
.slider-row input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

/* Editor screen */
.editor-form { padding: 16px; }
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.field input[type="text"], .field input[type="number"], .field textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
}
.field textarea {
  font-family: "SF Mono", "Menlo", "Courier New", monospace;
  font-size: 0.9rem;
  min-height: 260px;
  white-space: pre;
  line-height: 1.5;
}
/* The cifra/letra box is the field people actually spend time working in —
   give it most of the editor's space instead of a small fixed box. */
#f-cifra {
  min-height: 55vh;
}
.field-row { display: flex; gap: 10px; }
.field-row .field { flex: 1; }
.editor-actions {
  display: flex;
  gap: 10px;
  margin-top: 4px;
  flex-wrap: wrap;
}
.editor-actions button {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.88rem;
  cursor: pointer;
}
.editor-actions .primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.editor-hint { font-size: 0.78rem; color: var(--text-dim); margin-top: 6px; }
.file-upload-btn {
  display: inline-block;
}

.builder-search-row {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}
.builder-search-row input {
  flex: 1;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}
.builder-search-row button {
  flex: 0 0 auto;
  white-space: nowrap;
}
.builder-capo-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0 16px;
}

.fretboard-wrap {
  position: relative;
  max-width: 230px;
  margin: 0 auto;
  padding-left: 22px;
}
.fretboard-positions {
  position: absolute;
  left: 0;
  top: 26px; /* below the mutes row, aligned to the grid itself */
  bottom: 0;
  width: 20px;
}
.fb-pos-label {
  position: absolute;
  left: 0;
  transform: translateY(-50%);
  font-size: 0.7rem;
  color: var(--text-dim);
  font-family: "SF Mono", "Menlo", "Courier New", monospace;
}
.fretboard-mutes {
  position: relative;
  height: 24px;
  margin-bottom: 2px;
}
.fb-mute {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  padding: 2px 8px;
}
.fb-mute.active { color: var(--accent); font-weight: 700; }
.fretboard-grid {
  position: relative;
  width: 100%;
  aspect-ratio: 0.58;
  background: var(--card);
}
.fb-string {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--text);
  opacity: 0.55;
  transform: translateX(-1px);
}
.fb-fret {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--text);
  opacity: 0.45;
  transform: translateY(-1px);
}
.fb-fret.nut { height: 4px; background: var(--text); }
.fb-fret.nut2 { height: 1.5px; background: var(--text); opacity: 0.7; }
.fb-cell {
  position: absolute;
  width: 15%;
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: none;
  background: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
}
.fb-dot {
  width: 78%;
  height: 78%;
  border-radius: 50%;
  background: var(--accent);
  display: block;
}
.builder-readout {
  position: relative;
  height: 40px;
  margin-top: 14px;
  font-family: "SF Mono", "Menlo", "Courier New", monospace;
}
.builder-readout-col {
  position: absolute;
  top: 0;
  text-align: center;
  transform: translateX(-50%);
}
.builder-readout-row { font-size: 1rem; }
.builder-readout-row.dim { color: var(--text-dim); font-size: 0.8rem; margin-top: 2px; }
.builder-result {
  margin-top: 18px;
  text-align: center;
}
.builder-result-title { font-size: 0.8rem; color: var(--text-dim); margin-bottom: 6px; }
.builder-result-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}
.builder-result-empty { color: var(--text-dim); font-size: 0.85rem; }

.fab {
  position: fixed;
  right: 18px;
  bottom: calc(24px + var(--safe-bottom));
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1.6rem;
  border: none;
  box-shadow: 0 8px 20px rgba(0,0,0,0.4);
  cursor: pointer;
  z-index: 15;
}

.tap-hint {
  position: fixed;
  bottom: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}
.tap-hint.show { opacity: 1; }