:root {
  color-scheme: dark; /* all three themes are dark; native controls render dark */
  --radius: 12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* ---- Themes (data-theme on <html>) ---- */
:root,
:root[data-theme="wood"] {
  --bg: #1a1410;
  --bg-glow: #2c2117;
  --panel: #241b14;
  --panel-2: #2e231a;
  --ink: #f4ece2;
  --muted: #b6a390;
  --accent: #d98a3d;
  --accent-2: #e9b872;
  --line: #4a3a2c;
  --good: #7fb069;
  --wood: #c8a06a;
  --dot: #d98a3d;
  --dot-root: #e6533b;
  --string: #6b5642;
  --on-accent: #1a1008;
}

:root[data-theme="midnight"] {
  --bg: #0e1320;
  --bg-glow: #18233c;
  --panel: #161d2e;
  --panel-2: #1f2942;
  --ink: #e9f0fb;
  --muted: #93a3bd;
  --accent: #5b9bd5;
  --accent-2: #93c4ef;
  --line: #2b3856;
  --good: #6fca8f;
  --wood: #5b9bd5;
  --dot: #5b9bd5;
  --dot-root: #e0645a;
  --string: #45557a;
  --on-accent: #081020;
}

:root[data-theme="contrast"] {
  --bg: #000000;
  --bg-glow: #0a0a0a;
  --panel: #0c0c0c;
  --panel-2: #1a1a1a;
  --ink: #ffffff;
  --muted: #d6d6d6;
  --accent: #ffcc00;
  --accent-2: #ffe066;
  --line: #7a7a7a;
  --good: #37f39a;
  --wood: #ffcc00;
  --dot: #ffcc00;
  --dot-root: #ff5343;
  --string: #9a9a9a;
  --on-accent: #000000;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 50% -10%, var(--bg-glow) 0%, var(--bg) 60%);
  color: var(--ink);
  min-height: 100vh;
}

.app-header {
  text-align: center;
  padding: 2rem 1rem 1rem;
}
.app-header h1 { margin: 0; font-size: 2rem; letter-spacing: -0.02em; }
.tagline { margin: 0.4rem 0 0; color: var(--muted); }

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

.tabs {
  max-width: 1000px;
  margin: 0.5rem auto 0;
  padding: 0 1rem;
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--line);
}
.tab {
  background: transparent;
  border: 1px solid transparent;
  border-bottom: none;
  color: var(--muted);
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border-radius: 10px 10px 0 0;
}
.tab:hover { color: var(--ink); background: transparent; }
.tab.active {
  color: var(--accent-2);
  background: var(--panel);
  border-color: var(--line);
}
.panel { padding-top: 1.25rem; }
.hidden { display: none; }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}

.control { display: flex; flex-direction: column; gap: 0.4rem; }
.control label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.chord-search { flex: 1; min-width: 260px; }

select, input, button {
  font: inherit;
  color: var(--ink);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
}
select { min-width: 220px; cursor: pointer; }

.search-row { display: flex; gap: 0.5rem; }
.search-row input { flex: 1; }
input::placeholder { color: #8a7c6c; }

button {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}
button:hover { background: var(--accent-2); }
button:active { transform: translateY(1px); }

.quick-chords {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.6rem;
}
.chip {
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.85rem;
  cursor: pointer;
}
.chip:hover { color: var(--ink); border-color: var(--accent); }

.message {
  text-align: center;
  min-height: 1.2em;
  color: var(--accent-2);
  margin: 1rem 0 0;
}

.chord-summary {
  text-align: center;
  margin: 1.5rem 0 0.5rem;
}
.chord-summary h2 { margin: 0; font-size: 1.6rem; }
.chord-summary .notes { color: var(--muted); margin-top: 0.25rem; }
.chord-summary .notes b { color: var(--accent-2); }

.results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.voicing {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 0.75rem 1rem;
  text-align: center;
}
.voicing .v-title {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.4rem;
  letter-spacing: 0.03em;
}
.voicing .v-title strong { color: var(--accent-2); font-size: 0.95rem; }
.voicing .v-sub {
  font-size: 0.72rem;
  color: var(--muted);
  margin: -0.2rem 0 0.4rem;
}
.voicing svg { width: 100%; height: auto; }

.play-btn {
  margin-top: 0.5rem;
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--accent-2);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem;
}
.play-btn:hover { border-color: var(--accent); background: var(--panel); color: var(--accent-2); }

/* Clickable notes inside a diagram */
.note-hit { cursor: pointer; }
.note-hit .dot { transition: fill 0.1s; }
.note-hit:hover .dot { fill: var(--accent-2); }
.note-hit:hover .dot-root { fill: #ff7a5c; }
.note-hit:hover .marker { fill: var(--accent-2); }

/* ---- Song optimizer ---- */
.control.full { flex: 1 1 100%; }
.control.end { justify-content: flex-end; }

textarea {
  font: inherit;
  color: var(--ink);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  width: 100%;
  resize: vertical;
  min-height: 6rem;
}

.song-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.6rem;
}
.song-actions .or { color: var(--muted); font-size: 0.85rem; }
.song-actions input { width: 130px; }
button.secondary {
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--accent-2);
}
button.secondary:hover { border-color: var(--accent); }

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
  min-height: 1.5rem;
}
.chip-list .song-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--panel-2);
  border: 1px solid var(--accent);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.25rem 0.35rem 0.25rem 0.75rem;
  font-size: 0.9rem;
}
.song-chip button {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 0 0.2rem;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}
.song-chip button:hover { color: var(--dot-root); }
.chip-list .empty { color: var(--muted); font-size: 0.9rem; }

.checks {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.3rem 0.8rem;
  max-width: 560px;
}
.checks label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  text-transform: none;
  letter-spacing: normal;
  font-size: 0.85rem;
  color: var(--ink);
  cursor: pointer;
}
.checks input { width: auto; }

.setup {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem 1.15rem;
  margin-top: 1rem;
}
.setup.best { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.setup-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.2rem;
}
.setup-head h3 { margin: 0; font-size: 1.15rem; }
.setup-head .capo {
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
  font-size: 0.8rem;
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
}
.setup-head .capo.none { background: var(--panel-2); color: var(--muted); }
.setup-head .badge {
  color: var(--on-accent);
  background: var(--accent-2);
  font-weight: 700;
  font-size: 0.75rem;
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
}
.setup .summary { color: var(--muted); font-size: 0.9rem; margin: 0.1rem 0 0.6rem; }
.setup .summary b { color: var(--good); }
.setup-chords {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.8rem;
}
.setup-chord { text-align: center; }
.setup-chord .lbl { font-size: 0.85rem; margin-bottom: 0.25rem; }
.setup-chord .lbl b { color: var(--accent-2); }
.setup-chord .lbl .arrow { color: var(--muted); }
.setup-chord .openinfo { font-size: 0.75rem; color: var(--muted); margin-top: 0.2rem; }
.setup-chord .openinfo.strum { color: var(--good); font-weight: 600; }

/* ---- Icon buttons (pin / copy) ---- */
.icon-btn {
  position: absolute;
  top: 8px;
  width: 28px;
  height: 28px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--muted);
  cursor: pointer;
  z-index: 2;
}
.icon-btn svg { fill: currentColor; display: block; }
.icon-btn:hover { color: var(--accent-2); border-color: var(--accent); background: var(--panel); }
.pin-btn { left: 8px; }
.copy-btn { right: 8px; }

/* Pinned state */
.voicing.pinned,
.setup.pinned {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.pinned .pin-btn {
  color: var(--on-accent);
  background: var(--accent);
  border-color: var(--accent);
}
.pinned .pin-btn:hover { background: var(--accent-2); }

/* Pinned strips */
.pinned-wrap {
  background: rgba(217, 138, 61, 0.06);
  border: 1px dashed var(--accent);
  border-radius: var(--radius);
  padding: 0.75rem 1rem 1rem;
  margin-bottom: 1.25rem;
}
.pinned-wrap.hidden { display: none; }
.pinned-title {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
  color: var(--accent-2);
  letter-spacing: 0.02em;
}
#pinnedFinder { margin-top: 0; }
#pinnedSong .setup:first-child { margin-top: 0; }

/* Setup card needs room for corner icons */
.setup { position: relative; }
.setup-head { padding-left: 2.2rem; padding-right: 2.2rem; }

/* Toast */
#toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(12px);
  background: #111;
  color: #fff;
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 50;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---- Segmented toggles (note-mode, theme) ---- */
.seg {
  display: inline-flex;
  gap: 2px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 3px;
}
.seg button {
  background: transparent;
  border: none;
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
}
.seg button:hover { color: var(--ink); background: transparent; }
.seg button.active { background: var(--accent); color: var(--on-accent); }

.tabs .note-toggle { margin-left: auto; align-self: center; }
@media (max-width: 520px) {
  .tabs .note-toggle { margin-left: 0; }
}

.theme-row {
  margin-top: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.theme-row .lbl {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.theme-row .seg { border-radius: 999px; }
.theme-row .seg button { border-radius: 999px; }

/* Pinned strip header with Copy-all */
.pinned-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}
.pinned-head .pinned-title { margin: 0; }
button.secondary.small {
  font-size: 0.8rem;
  padding: 0.35rem 0.7rem;
}

/* ---- Solo Helper ---- */
.solo-block {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem 1rem;
  margin-top: 1rem;
}
.solo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}
.solo-head h3 { margin: 0; font-size: 1.05rem; }
.solo-head h4 { margin: 0; font-size: 0.95rem; color: var(--accent-2); }
.solo-btns { display: inline-flex; gap: 0.4rem; flex-wrap: wrap; }
.muted-note { color: var(--muted); font-size: 0.8rem; font-weight: 400; }
.scroll-x { overflow-x: auto; }
/* Render tab/neck SVGs at their natural pixel size (set via width/height) so a
   note is the same size in every diagram; the container scrolls if too wide. */
.scroll-x svg { display: block; max-width: none; }
.lick-row {
  margin-top: 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--line);
}

/* Scale-neck labels */
.neck-str { fill: var(--muted); font-size: 11px; text-anchor: end; font-weight: 600; }
.neck-fret { fill: var(--muted); font-size: 10px; text-anchor: middle; }

/* Tablature */
.tab-line { stroke: var(--line); stroke-width: 1; }
.tab-strlabel { fill: var(--muted); font-size: 10px; text-anchor: end; }
.tab-marker { fill: var(--muted); font-size: 9px; font-weight: 700; letter-spacing: 1px; }
.tab-chord { fill: var(--accent-2); font-size: 12px; font-weight: 700; text-anchor: middle; }
.tab-bar { stroke: var(--line); stroke-width: 1.5; }
.tab-numbg { fill: var(--panel); }
.tab-num { fill: var(--ink); font-size: 12px; font-weight: 700; text-anchor: middle; }

.app-footer {
  max-width: 1000px;
  margin: 0 auto;
  padding: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  border-top: 1px solid var(--line);
}
.legend { display: inline-block; }
.legend b { color: var(--accent-2); }

/* SVG diagram elements */
.fret-line { stroke: var(--line); stroke-width: 1.5; }
.nut { stroke: var(--ink); stroke-width: 5; }
.string-line { stroke: var(--string); stroke-width: 1.3; }
.dot { fill: var(--dot); }
.dot-root { fill: var(--dot-root); }
.dot-label { fill: var(--on-accent); font-size: 9px; font-weight: 700; text-anchor: middle; }
.marker { fill: var(--muted); font-size: 12px; text-anchor: middle; }
.string-name { fill: var(--muted); font-size: 10px; text-anchor: middle; }
.fret-num { fill: var(--muted); font-size: 10px; text-anchor: end; }
.drone-note { fill: var(--good); }
