/* =============================================================================
   guitar — standalone app shell
   -----------------------------------------------------------------------------
   Full-viewport, no site chrome. Sidebar (tabs + song list). Main canvas:
     - Song view: top bar (title · progression · tools) + dynamic-column lyrics
     - Chord library: alphabetical grid of every shape
   Lyrics use CSS multi-column flow with sections marked break-inside:avoid;
   JS measures and bumps column-count until everything fits without scrolling.
============================================================================= */

html, body { height: 100%; }
body.app {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  overflow: hidden;
}

/* =========================================================================
   Section / progression / chord-type color coding
   -----------------------------------------------------------------------------
   The accent color of an element comes from a [data-kind] attribute on an
   ancestor. We do this rather than swap the global --accent so multiple
   colors coexist on one screen (verse blocks blue, choruses mint, etc.).
   "Kinds" cover BOTH song-section types (verse/chorus/bridge/...) and
   chord-type families (major/minor/7th/...). Same token names for both.
========================================================================== */
[data-kind="verse"]        { --kind: var(--c-cyan-1);   --kind-2: var(--c-cyan-2);   --kind-fg: var(--accent-fg); }
[data-kind="chorus"]       { --kind: var(--c-mint-1);   --kind-2: var(--c-mint-2);   --kind-fg: var(--accent-fg); }
[data-kind="pre-chorus"]   { --kind: var(--c-violet-1); --kind-2: var(--c-violet-2); --kind-fg: var(--accent-fg); }
[data-kind="bridge"]       { --kind: var(--c-coral-1);  --kind-2: var(--c-coral-2);  --kind-fg: var(--accent-fg); }
[data-kind="intro"]        { --kind: var(--c-amber-1);  --kind-2: var(--c-amber-2);  --kind-fg: var(--accent-fg); }
[data-kind="outro"]        { --kind: var(--c-amber-2);  --kind-2: var(--c-amber-1);  --kind-fg: var(--accent-fg); }
[data-kind="interlude"]    { --kind: var(--c-violet-2); --kind-2: var(--c-violet-1); --kind-fg: var(--accent-fg); }
[data-kind="instrumental"] { --kind: var(--fg-dim);     --kind-2: var(--fg-mute);    --kind-fg: var(--bg); }

/* Chord-type families — four canonical groups + one neutral fallback.
     major     : plain triads             (C, G, D, A, E, F, B)
     major-alt : major-rooted variants    (Csus2, Cadd9, Cmaj7, C/E, C6...)
     minor     : plain minor triads       (Am, Em, Dm, F#m...)
     minor-alt : minor-rooted variants    (Am7, Em7, Amadd9, Dm/F...)
     other     : everything else          (power chords, dim, weird inversions) */
[data-family="major"]     { --kind: var(--c-cyan-1);   --kind-2: var(--c-cyan-2); }
[data-family="major-alt"] { --kind: var(--c-mint-1);   --kind-2: var(--c-mint-2); }
[data-family="minor"]     { --kind: var(--c-violet-1); --kind-2: var(--c-violet-2); }
[data-family="minor-alt"] { --kind: var(--c-coral-1);  --kind-2: var(--c-coral-2); }
[data-family="other"]     { --kind: var(--c-amber-1);  --kind-2: var(--c-amber-2); }

[data-kind], [data-family] {
  --kind-soft: color-mix(in srgb, var(--kind) 18%, transparent);
  --kind-glow: color-mix(in srgb, var(--kind) 36%, transparent);
}
/* Default fallbacks when no data-kind/data-family is set */
:root { --kind: var(--accent); --kind-2: var(--accent-2); --kind-soft: var(--accent-soft); --kind-fg: var(--accent-fg); }

/* =========================================================================
   Shell
   ========================================================================= */
.app-shell {
  display: flex;
  height: 100vh;
  height: 100dvh;
  width: 100%;
}

/* ---- Sidebar ---------------------------------------------------------- */
.app-sidebar {
  width: 248px;
  flex-shrink: 0;
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.app-sidebar-head {
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.app-sidebar-head .app-title {
  font: 800 16px var(--sans);
  letter-spacing: -.015em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  text-decoration: none;
}
.app-sidebar-head .app-title .glyph {
  width: 28px; height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.app-sidebar-head .app-title .glyph img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
/* Dark theme: invert the black guitar icon so it reads against dark bg.
   Light theme: leave as-is (icon stays black). */
:root[data-theme="dark"] .app-sidebar-head .app-title .glyph img { filter: invert(1); }
.app-sidebar-head .home-link {
  font: 600 11px var(--mono);
  color: var(--fg-mute);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: .12em;
}
.app-sidebar-head .home-link:hover { color: var(--accent); }

.app-sidebar-tabs {
  display: flex;
  padding: 8px;
  gap: 4px;
  border-bottom: 1px solid var(--border);
}
.app-sidebar-tabs button {
  flex: 1;
  font: 700 12px var(--sans);
  letter-spacing: .04em;
  padding: 7px 0;
  background: transparent;
  border: 0;
  border-radius: 8px;
  color: var(--fg-dim);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.app-sidebar-tabs button:hover { color: var(--fg); background: var(--bg-elev); }
.app-sidebar-tabs button.active {
  background: var(--bg-elev);
  color: var(--fg);
  box-shadow: var(--shadow-xs);
}
.app-sidebar-tabs button.tab-icon {
  flex: 0 0 32px;
  padding: 6px 0;
}
.app-sidebar-tabs button.tab-icon img {
  width: 16px;
  height: 16px;
  object-fit: contain;
  opacity: .7;
  transition: opacity var(--t-fast) var(--ease);
}
.app-sidebar-tabs button.tab-icon:hover img { opacity: 1; }
.app-sidebar-tabs button.tab-icon.active img { opacity: 1; }
:root[data-theme="dark"] .app-sidebar-tabs button.tab-icon img { filter: invert(1); }

.sidebar-search {
  padding: 8px;
  border-bottom: 1px solid var(--border);
}
.sidebar-search input {
  width: 100%;
  font: 500 13px var(--sans);
  padding: 7px 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 7px;
  color: var(--fg);
  outline: none;
  transition: border-color var(--t-fast) var(--ease);
}
.sidebar-search input:focus { border-color: var(--accent); }

.app-sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px 6px 12px;
}
.sidebar-item {
  display: block;
  padding: 7px 10px;
  border-radius: 7px;
  text-decoration: none;
  color: var(--fg);
  cursor: pointer;
  transition: background var(--t-fast) var(--ease);
}
.sidebar-item:hover { background: var(--bg-elev); }
.sidebar-item.active {
  background: var(--kind-soft, var(--accent-soft));
  color: var(--kind, var(--accent));
}
.sidebar-item .item-title { font: 600 13px var(--sans); letter-spacing: -.005em; }
.sidebar-item .item-sub {
  font: 500 11px var(--mono);
  color: var(--fg-mute);
  margin-top: 1px;
}
.sidebar-item.active .item-sub { color: var(--kind, var(--accent)); opacity: .8; }

.sidebar-hint {
  padding: 14px 12px;
  color: var(--fg-mute);
  font: 500 12px/1.5 var(--sans);
}

.app-sidebar-foot {
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  font: 500 11px var(--mono);
  color: var(--fg-mute);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.app-sidebar-foot button.theme {
  background: transparent;
  border: 0;
  color: var(--fg-mute);
  cursor: pointer;
  font: 500 11px var(--mono);
}
.app-sidebar-foot button.theme:hover { color: var(--accent); }

/* ---- Main canvas ------------------------------------------------------ */
.app-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
/* Song view uses a non-scrolling canvas (columns fit everything). */
.app-main-scroll {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 14px 22px 14px;
  display: flex;
  flex-direction: column;
}
/* Chord library + welcome use natural scroll. */
.app-main-scroll.scrollable { overflow-y: auto; }

/* =========================================================================
   Dashboard (welcome / Songs-tab home)
   -----------------------------------------------------------------------------
   Three vertical bands:
     1. Generative ribbon canvas — stochastic flowing curves in family colors
     2. Stats tile grid — at-a-glance numerics about the songbook
     3. Song picker — premium-styled grid of all songs
========================================================================= */
.dashboard {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 4px 4px 24px;
}

/* --- Generative canvas band -------------------------------------------- */
.gen-band {
  position: relative;
  height: 220px;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--c-cyan-1) 8%, var(--bg-elev)) 0%,
    color-mix(in srgb, var(--c-violet-1) 6%, var(--bg-elev)) 100%);
  border: 1px solid var(--border);
}
.gen-band canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.gen-band .gen-overlay {
  position: absolute;
  inset: 0;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  pointer-events: none;
  background: linear-gradient(180deg, transparent 35%, color-mix(in srgb, var(--bg-elev) 70%, transparent) 100%);
}
.gen-band .gen-overlay h1 {
  font: 900 28px var(--sans);
  letter-spacing: -.03em;
  margin: 0 0 4px;
  color: var(--fg);
}
.gen-band .gen-overlay .sub {
  font: 500 13px var(--sans);
  color: var(--fg-dim);
  max-width: 60ch;
}
.gen-band .gen-overlay .corner-stat {
  position: absolute;
  top: 16px; right: 20px;
  display: flex;
  gap: 14px;
  font: 700 10px var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--fg-mute);
}
.gen-band .gen-overlay .corner-stat b {
  display: block;
  font: 800 18px var(--sans);
  letter-spacing: -.02em;
  color: var(--fg);
  margin-top: 2px;
}

/* --- Stats tile grid --------------------------------------------------- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}
.stat-tile {
  position: relative;
  padding: 12px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.stat-tile::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--kind, var(--accent));
  opacity: .7;
}
.stat-tile .k {
  font: 700 10px var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--fg-mute);
}
.stat-tile .v {
  font: 900 26px var(--sans);
  letter-spacing: -.025em;
  color: var(--fg);
  margin-top: 4px;
  line-height: 1;
}
.stat-tile .vsub {
  font: 500 11px var(--mono);
  color: var(--kind, var(--fg-dim));
  margin-top: 4px;
}

/* --- Picker section ---------------------------------------------------- */
.picker {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.picker .head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.picker .head h2 {
  font: 800 16px var(--sans);
  letter-spacing: -.015em;
  margin: 0;
}
.picker .head .sub {
  font: 600 11px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .14em;
}
.picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
}
.picker-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: var(--fg);
  transition: transform var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease);
}
.picker-card:hover {
  transform: translateY(-1px);
  border-color: var(--c-cyan-1);
  background: color-mix(in srgb, var(--c-cyan-1) 4%, var(--bg-elev));
}
.picker-card .swatch {
  width: 4px;
  align-self: stretch;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--c-cyan-1), var(--c-mint-1));
  flex-shrink: 0;
}
.picker-card .info { min-width: 0; flex: 1; }
.picker-card .info .t {
  font: 700 13.5px var(--sans);
  letter-spacing: -.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.picker-card .info .a {
  font: 500 11px var(--mono);
  color: var(--fg-mute);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.picker-card .meta {
  font: 700 10px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .1em;
  flex-shrink: 0;
}

/* =========================================================================
   Settings page
   ========================================================================= */
.settings {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 4px 4px 24px;
  max-width: 920px;
}
.settings .head {
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 4px;
}
.settings .head h1 {
  font: 900 24px var(--sans);
  letter-spacing: -.025em;
  margin: 0 0 4px;
}
.settings .head .sub {
  font: 500 13px var(--sans);
  color: var(--fg-dim);
}
.settings-section {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
}
.settings-section h3 {
  font: 700 11px var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--fg-mute);
  margin: 0 0 10px;
}
.legend-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.legend-item .swatch {
  width: 14px; height: 14px;
  border-radius: 4px;
  background: var(--kind);
  flex-shrink: 0;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--kind) 40%, transparent);
}
.legend-item .label {
  font: 700 12px var(--sans);
  color: var(--fg);
  letter-spacing: -.01em;
}
.legend-item .desc {
  font: 500 11px var(--mono);
  color: var(--fg-mute);
}
.legend-item .text { display: flex; flex-direction: column; min-width: 0; }

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
}
.summary-cell {
  padding: 10px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.summary-cell .v {
  font: 900 22px var(--sans);
  letter-spacing: -.02em;
  color: var(--kind, var(--fg));
}
.summary-cell .k {
  font: 600 10px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-top: 2px;
}

.theme-switch {
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.theme-switch button {
  font: 600 12px var(--sans);
  padding: 6px 14px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--fg-dim);
  cursor: pointer;
}
.theme-switch button.active {
  background: var(--accent);
  color: var(--accent-fg);
}

/* =========================================================================
   Song view — top bar
   ========================================================================= */
.song-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  flex-shrink: 0;
}
.song-bar .title-block { display: flex; align-items: baseline; gap: 10px; min-width: 0; }
.song-bar .title {
  font: 800 20px var(--sans);
  letter-spacing: -.02em;
  white-space: nowrap;
}
.song-bar .artist {
  font: 500 13px var(--sans);
  color: var(--fg-dim);
  white-space: nowrap;
}

.progression-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  justify-content: center;
  min-width: 0;
  flex-wrap: wrap;
  row-gap: 4px;
}
.progression-inline .prog-group {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.progression-inline .prog-label {
  font: 700 9.5px var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--kind, var(--fg-mute));
  padding-right: 4px;
  border-right: 1px solid var(--border);
  margin-right: 2px;
}
.progression-inline .prog-divider {
  color: var(--fg-mute);
  font-size: 14px;
  user-select: none;
}
.progression-inline .arrow {
  font: 500 11px var(--mono);
  color: var(--fg-mute);
}
.progression-inline .chord {
  padding: 3px 9px;
  background: var(--kind-soft, var(--accent-soft));
  color: var(--kind, var(--accent));
  border-radius: 6px;
  font: 700 12px var(--mono);
  letter-spacing: -.01em;
  white-space: nowrap;
  cursor: pointer;
}

.tool-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.tool-group {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 5px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.tool-group .label {
  font: 700 9.5px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .12em;
  padding: 0 4px;
}
.tool-group .icon-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  padding: 0;
}
.tool-group .icon-label img {
  width: 16px;
  height: 16px;
  object-fit: contain;
}
:root[data-theme="dark"] .tool-group .icon-label img { filter: invert(1); }
.tool-group .value {
  font: 700 12px var(--mono);
  color: var(--fg);
  min-width: 2.4ch;
  text-align: center;
}
.tool-btn {
  width: 22px; height: 22px;
  border-radius: 6px;
  border: 0;
  background: var(--bg-elev);
  color: var(--fg);
  font: 700 13px var(--mono);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.tool-btn:hover { background: var(--accent); color: var(--accent-fg); }
.tool-btn.active { background: var(--accent); color: var(--accent-fg); }

/* =========================================================================
   Song view — chord-shapes strip (above lyrics)
   ========================================================================= */
/* Two-pane strip: chords (flexible, h-scroll on overflow) + notes (fixed
   width on the right). Prevents many-chord songs from squashing the notes. */
.song-strip {
  display: flex;
  align-items: stretch;
  gap: 16px;
  padding: 8px 0 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
  flex-shrink: 0;
  min-height: 0;
}
.chord-strip-wrap {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  display: flex;
  align-items: flex-end;
  scrollbar-width: thin;
  scrollbar-color: var(--border-hi) transparent;
}
.chord-strip-wrap::-webkit-scrollbar { height: 6px; }
.chord-strip-wrap::-webkit-scrollbar-thumb {
  background: var(--border-hi);
  border-radius: 3px;
}
.chord-strip {
  display: inline-flex;
  gap: 12px;
  align-items: flex-end;
  flex-shrink: 0;       /* don't compress the row */
  padding: 2px 4px 4px 0;
}
.chord-strip .mini {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  cursor: pointer;
  flex-shrink: 0;
}
.chord-strip .mini .name { font: 700 11px var(--sans); white-space: nowrap; }
.strip-notes {
  width: 280px;
  flex-shrink: 0;
  border-left: 1px solid var(--border);
  padding-left: 14px;
  font: 500 11.5px/1.5 var(--mono);
  color: var(--fg-dim);
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
}
.strip-notes b { color: var(--fg); font-weight: 700; }
.strip-notes .strum {
  font: 700 11px var(--mono);
  color: var(--fg);
  letter-spacing: .04em;
}
.strip-notes .body {
  font: 500 11.5px/1.45 var(--sans);
  color: var(--fg-dim);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

/* =========================================================================
   Song view — dynamic-column lyrics
   ========================================================================= */
.lyrics-wrap {
  flex: 1;
  min-height: 0;
  overflow: hidden;       /* never scroll — fitColumns() makes it fit */
  position: relative;
}
.lyrics {
  height: 100%;
  column-fill: auto;
  column-gap: 28px;
  column-rule: 1px solid var(--border);
  column-count: 1;        /* overridden by JS */
}
.lyrics .section {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  page-break-inside: avoid;
  margin-bottom: 12px;
}
.section-label {
  font: 700 10px var(--mono);
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--kind, var(--accent));
  background: var(--kind-soft, transparent);
  padding: 2px 8px;
  border-radius: 99px;
  margin-bottom: 5px;
  display: inline-block;
}
.lyrics .section { position: relative; }
.lyrics .section::before {
  content: "";
  position: absolute;
  left: -8px; top: 4px; bottom: 4px;
  width: 2px;
  background: var(--kind, transparent);
  border-radius: 2px;
  opacity: .35;
}
.lyric-line {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 3px;
  min-height: 2em;
}
.seg { display: inline-flex; flex-direction: column; align-items: flex-start; }
.seg .chord {
  font: 800 12px var(--mono);
  color: var(--kind, var(--accent));
  line-height: 1.3;
  letter-spacing: -.01em;
  cursor: pointer;
  padding: 0 4px;
  border-radius: 5px;
  margin-left: -4px;
  transition: background var(--t-fast) var(--ease);
}
.seg .chord:hover { background: var(--kind-soft, var(--accent-soft)); }
.seg .chord.empty { color: transparent; user-select: none; pointer-events: none; height: 1.3em; }
.seg .text {
  font: 500 14px/1.4 var(--sans);
  color: var(--fg);
  white-space: pre-wrap;
}
.seg.kind-instrumental .text { font-style: italic; color: var(--fg-dim); }

/* Density variants picked by fitColumns() if columns alone aren't enough */
.lyrics.density-tight .seg .text     { font-size: 13px; line-height: 1.35; }
.lyrics.density-tight .seg .chord    { font-size: 11px; }
.lyrics.density-tight .section       { margin-bottom: 8px; }
.lyrics.density-tighter .seg .text   { font-size: 12px; line-height: 1.3; }
.lyrics.density-tighter .seg .chord  { font-size: 10.5px; }
.lyrics.density-tighter .section     { margin-bottom: 6px; }

/* Tab block (fingerpicking) */
.tab-block {
  font: 500 11px/1.35 var(--mono);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  margin-bottom: 10px;
  overflow-x: auto;
  white-space: pre;
  color: var(--fg);
  break-inside: avoid;
}

/* =========================================================================
   Chord library (full grid)
   ========================================================================= */
/* === Chord library — premium edition ====================================
   Sticky letter-banded grid with a top header that includes a color legend.
   Tiles use a recessed elevated look: gradient top bar, soft shadow, name
   in the family color, neutral diagram color (so all diagrams read equally).
========================================================================== */
.chord-library-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin: 4px 6px 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.chord-library-head .head-left h1 {
  font: 900 26px var(--sans);
  letter-spacing: -.03em;
  margin: 0 0 4px;
}
.chord-library-head .head-left .meta {
  font: 600 11px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .14em;
}
.chord-legend {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.chord-legend .swatch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font: 600 11px var(--sans);
  color: var(--fg-dim);
}
.chord-legend .swatch::before {
  content: "";
  width: 10px; height: 10px;
  border-radius: 3px;
  background: var(--kind);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--kind) 50%, transparent);
}

.letter-section { margin-bottom: 26px; }
.letter-section .letter {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 900 18px var(--sans);
  color: var(--fg);
  letter-spacing: -.02em;
  margin: 0 4px 10px;
}
.letter-section .letter::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--border) 0%, transparent 100%);
}
.chord-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}
.chord-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 10px 10px;
  background: linear-gradient(180deg, var(--bg-elev) 0%, var(--bg-soft) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--fg);
  cursor: pointer;
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: transform var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}
.chord-tile::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--kind, var(--accent)) 0%, var(--kind-2, var(--accent-2)) 100%);
}
.chord-tile:hover {
  transform: translateY(-2px);
  border-color: var(--kind, var(--accent));
  box-shadow: var(--shadow-md);
}
.chord-tile .name {
  font: 800 17px var(--sans);
  letter-spacing: -.02em;
  color: var(--kind, var(--fg));
}
.chord-tile .sub {
  font: 600 10px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-top: 2px;
}
/* In the library grid, render chord diagrams in a neutral color so the
   tile's family-coded top bar + name stay the dominant signal. */
.chord-tile .chord-diagram .dot      { fill: var(--fg-dim); }
.chord-tile .chord-diagram .dot-text { fill: var(--bg); }
.chord-tile .sub {
  font: 600 10px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .12em;
}

/* Chord focus (single chord page) */
.chord-focus {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 28px;
  align-items: start;
  padding: 8px;
}
.chord-focus .big-name {
  font: 900 56px var(--sans);
  letter-spacing: -.04em;
  line-height: 1;
}
.chord-focus .meta {
  font: 600 11px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-top: 6px;
}
.chord-focus .shapes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.chord-focus .shape-card {
  padding: 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.chord-focus .shape-card .shape-name {
  font: 600 10px var(--mono);
  color: var(--fg-mute);
  text-transform: uppercase;
  letter-spacing: .14em;
}
.chord-focus .used-in-list {
  margin-top: 14px;
  font: 500 13px var(--sans);
  color: var(--fg-dim);
}
.chord-focus .used-in-list a {
  color: var(--accent);
  text-decoration: none;
  margin-right: 10px;
}
.chord-focus .used-in-list a:hover { text-decoration: underline; }

/* =========================================================================
   Chord diagram (SVG)
   ========================================================================= */
.chord-diagram { display: block; }
.chord-diagram .grid-line { stroke: var(--border-hi); stroke-width: 1; }
.chord-diagram .nut       { stroke: var(--fg); stroke-width: 3; stroke-linecap: square; }
.chord-diagram .dot       { fill: var(--kind, var(--accent)); }
.chord-diagram .dot-text  { fill: var(--kind-fg, var(--accent-fg)); font: 700 9px var(--sans); text-anchor: middle; dominant-baseline: central; }
.chord-diagram .marker    { fill: var(--fg-dim); font: 600 11px var(--mono); text-anchor: middle; }
.chord-diagram .fret-label{ fill: var(--fg-mute); font: 600 10px var(--mono); }

/* =========================================================================
   Chord popover
   ========================================================================= */
.chord-pop {
  position: absolute;
  z-index: 50;
  padding: 10px 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border-hi);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  display: flex;
  gap: 12px;
  align-items: flex-start;
  animation: pop-in .14s var(--ease-out);
}
.chord-pop .pop-info { display: flex; flex-direction: column; gap: 3px; min-width: 7ch; }
.chord-pop .pop-info .name { font: 800 18px var(--sans); }
.chord-pop .pop-info .shape-name { font: 600 9.5px var(--mono); color: var(--fg-mute); text-transform: uppercase; letter-spacing: .14em; }
.chord-pop .pop-info .alt-link { font: 600 11px var(--sans); color: var(--accent); cursor: pointer; text-decoration: none; }
@keyframes pop-in {
  from { opacity: 0; transform: translateY(-3px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =========================================================================
   Metronome dots
   ========================================================================= */
.metronome { display: inline-flex; align-items: center; gap: 4px; }
.metronome .beat-dots { display: inline-flex; gap: 2px; margin-left: 3px; }
.metronome .beat-dots span {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--bg-deep);
  transition: background .08s linear, transform .08s linear;
}
.metronome .beat-dots span.on { background: var(--accent); transform: scale(1.4); }