/* Shared music-tool foundations. Component geometry belongs to each tool. */
.music-tool {
  --music-surface: #fffdf9;
  --music-panel: #faf7f2;
  --music-border: #cfc6bd;
  --music-text: #302c28;
  --music-muted: #655d54;
  --music-accent: #365e58;
  --music-accent-strong: #254a44;
  --music-selected: #e9f0eb;
  --music-focus: #a1492a;
  --music-error: #9b2929;
  --music-warning: #8b571c;
  --music-warning-surface: #fff2d9;
  --music-neck: #eee1ce;
  --music-wire: #9b8b76;
  --music-fret: #b3a590;
  --music-nut: #817362;
  --music-radius: .375rem;
  --music-panel-radius: .5rem;
  --music-control-padding: .5rem .75rem;
  --music-space-1: .25rem;
  --music-space-2: .5rem;
  --music-space-3: .75rem;
  --music-space-4: 1rem;
  --music-space-6: 1.5rem;
  --music-space-8: 2rem;
}
.content.music-tool { width: 100%; max-width: 1040px; min-width: 0; margin: 0 auto; padding: 2.5rem 2rem 3rem; color: var(--music-text); font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, Helvetica, sans-serif; font-size: 1rem; line-height: 1.5; }
.music-tool *, .music-tool *::before, .music-tool *::after { box-sizing: border-box; }
.music-tool [hidden], .music-tool[hidden] { display: none !important; }
.music-tool > .tool-header { margin-bottom: 1.5rem; }
.music-tool > .tool-header h1 { margin: 0 0 .5rem; font-size: 2rem; line-height: 1.15; }
.music-tool h2 { margin: 0; font-size: 1.15rem; line-height: 1.3; }
.music-tool h3 { margin: 0; font-size: 1rem; line-height: 1.4; }
.music-tool p { margin: 0; color: var(--music-muted); overflow-wrap: anywhere; }
.music-tool button, .music-tool input, .music-tool select, .music-tool textarea { font: inherit; color: inherit; }
.music-tool button, .music-tool input, .music-tool select { min-height: 44px; }
.music-tool button, .music-tool input, .music-tool select, .music-tool textarea { max-width: 100%; border: 1px solid var(--music-border); border-radius: var(--music-radius); padding: var(--music-control-padding); background: var(--music-surface); }
.music-tool button { min-width: 44px; cursor: pointer; line-height: 1.3; }
.music-tool button:hover:not(:disabled) { background: var(--music-selected); }
.music-tool button:disabled { opacity: .5; cursor: default; }
.music-tool :focus-visible { outline: 3px solid var(--music-focus); outline-offset: 3px; }
.music-tool .music-primary { background: var(--music-accent); border-color: var(--music-accent); color: var(--music-surface); }
.music-tool .music-primary:hover:not(:disabled) { background: var(--music-accent-strong); }
.music-tool button[aria-pressed="true"], .music-tool [role="tab"][aria-selected="true"] { border-color: var(--music-accent); background: var(--music-selected); color: var(--music-accent-strong); box-shadow: inset 0 0 0 1px var(--music-accent); }
.music-tool .music-tuning-presets { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: .5rem; }
.music-tool .music-tuning-preset { display: grid; align-content: start; gap: .35rem; padding: .75rem; text-align: left; min-width: 0; }
.music-tool .music-preset-notes { font-size: .8rem; color: var(--music-muted); }
.music-tool .music-tuning-preset[aria-pressed="true"] strong::after { content: " ✓"; }
.music-tool .music-string-badges { display: flex; flex-wrap: wrap; gap: .5rem; }
.music-tool .music-string-badge { display: flex; justify-content: space-between; align-items: center; gap: .5rem; min-width: 4.5rem; }
.music-tool .music-string-number { font-size: .75rem; color: var(--music-muted); }
.music-tool .music-string-pitch { white-space: nowrap; }
.music-tool .music-string-badge[aria-expanded="true"] { background: var(--music-selected); border-color: var(--music-accent); box-shadow: inset 0 0 0 1px var(--music-accent); }
.music-tool .music-string-badge[aria-expanded="true"] .music-string-pitch { text-decoration: underline; text-underline-offset: .25rem; }
.music-tool .music-note-picker { display: grid; gap: .75rem; padding: 1rem; margin-top: 1rem; border: 1px solid var(--music-border); border-radius: var(--music-panel-radius); background: var(--music-panel); }
.music-tool .music-note-picker h3 { margin: 0; font-size: 1rem; }
.music-tool .music-note-options { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
.music-tool .music-note-option { min-width: 44px; }
.music-tool .music-note-option[aria-pressed="true"] { font-weight: 700; text-decoration: underline; text-underline-offset: .25rem; }
.music-tool .music-note-picker > button { justify-self: start; }
/* Tuning and capo geometry shared by both tools. */
.music-tool .music-tuning-name { margin: .65rem 0 .25rem; font-weight: 600; }
.music-tool .music-settings-hint { margin: .3rem 0 .85rem; color: var(--music-muted); font-size: .875rem; }
.music-tool .music-capo-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin: 1rem 0 .5rem; }
.music-tool .music-capo-label { color: var(--music-accent); font-size: .9rem; }
.music-tool .music-no-capo[aria-pressed="true"]::before { content: "✓ "; }
.music-tool .music-tuning-diagram { display: grid; grid-template-columns: 5.25rem minmax(0, 1fr); gap: .5rem; min-width: 0; }
.music-tool .music-neck-badges { display: grid; grid-template-rows: 36px 288px; align-items: center; }
.music-tool .music-neck-badges > span { color: var(--music-muted); font-size: .75rem; padding-left: .4rem; }
.music-tool .music-neck-badges .music-string-badges { display: grid; grid-template-rows: repeat(6, 48px); gap: 0; align-items: center; }
.music-tool .music-neck-badges .music-string-badge { height: 44px; min-width: 0; padding: .4rem .55rem; }
.music-tool .music-neck-scroll { min-width: 0; overflow-x: auto; border-radius: var(--music-radius); overscroll-behavior-x: contain; }
.music-tool .music-tuning-neck {
  position: relative; height: 324px; min-width: 528px;
  background: linear-gradient(to bottom, var(--music-panel) 36px, var(--music-neck) 36px);
}
.music-tool .music-tuning-neck::before {
  content: ""; position: absolute; z-index: 2; left: 0; top: 36px; bottom: 0;
  width: 4px; background: var(--music-nut); pointer-events: none;
}
.music-tool .music-neck-strings {
  position: absolute; top: 36px; right: 0; bottom: 0; left: 0;
  display: grid; grid-template-rows: repeat(6, 48px); pointer-events: none;
}
.music-tool .music-tuning-wire { position: relative; }
.music-tool .music-tuning-wire::before { content: ""; position: absolute; top: 50%; left: 0; right: 0; height: 1px; background: var(--music-wire); }
.music-tool .music-tuning-wire[data-string="2"]::before { height: 1.5px; }
.music-tool .music-tuning-wire[data-string="3"]::before { height: 2px; }
.music-tool .music-tuning-wire[data-string="4"]::before { height: 2.5px; }
.music-tool .music-tuning-wire[data-string="5"]::before { height: 3px; }
.music-tool .music-tuning-wire[data-string="6"]::before { height: 3.5px; }
.music-tool .music-capo-frets { display: grid; grid-template-columns: repeat(12, minmax(44px, 1fr)); height: 100%; }
.music-tool .music-capo-fret {
  position: relative; height: 100%; min-width: 44px; padding: 0;
  border: 0; border-radius: 0; background: transparent;
}
.music-tool .music-capo-fret::after {
  content: ""; position: absolute; right: 0; top: 36px; bottom: 0;
  width: 2px; background: var(--music-fret); pointer-events: none;
}
.music-tool .music-capo-fret[aria-pressed="true"] { background: transparent; box-shadow: none; }
.music-tool .music-capo-fret:hover { background: rgb(255 253 249 / 30%); }
.music-tool .music-capo-fret:focus-visible { outline-offset: -3px; z-index: 3; }
.music-tool .music-fret-number {
  position: absolute; top: 3px; left: 50%; transform: translateX(-50%);
  display: grid; place-items: center; width: 30px; height: 30px;
  color: var(--music-muted); font-size: .8rem; border-radius: 50%;
}
.music-tool .music-fret-marker { position: absolute; top: 170px; left: 50%; transform: translateX(-50%); color: var(--music-wire); font-size: 1rem; }
.music-tool .music-capo-fret[aria-pressed="true"]::before {
  content: ""; position: absolute; top: 48px; bottom: 12px; left: 50%; transform: translateX(-50%);
  width: 14px; z-index: 1; border: 2px solid var(--music-accent-strong); border-radius: 7px;
  background: var(--music-accent); box-shadow: 2px 2px 3px rgb(48 44 40 / 20%);
}
.music-tool .music-capo-fret[aria-pressed="true"] .music-fret-number { color: var(--music-surface); background: var(--music-accent); font-weight: 700; }
.music-tool .music-sounding-tuning { margin: .85rem 0; font-size: .875rem; color: var(--music-accent); }

@media (max-width: 1100px) {
  /* Clear the fixed site logo while the centered content sits near its edge. */
  .content.music-tool { padding-top: 4.5rem; }
}
@media (max-width: 799px) {
  /* Leave room below the site navigation logo fixed at the top left. */
  .content.music-tool { padding: 4.5rem 1rem 2rem; }
  .music-tool .music-tuning-presets { grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr)); }
  .music-tool .music-note-picker { padding: .75rem; }
}

/* Shared page rhythm and passive results. */
.music-tool .tool-eyebrow { margin-bottom: .5rem; font-size: .875rem; text-transform: uppercase; letter-spacing: .0625rem; }
.music-tool .tool-eyebrow a { color: var(--music-muted); text-decoration: none; }
.music-tool .tool-eyebrow a:hover { text-decoration: underline; }
.music-tool summary { min-height: 44px; padding: .625rem 0; cursor: pointer; font-weight: 600; }
.music-tool label { color: var(--music-muted); font-size: .875rem; font-weight: 600; }
.music-tool .result-section { min-width: 0; margin-bottom: 2rem; }
.music-tool .result-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 1rem; }
.music-tool .result-heading p { font-size: .875rem; }
.music-tool .note-pills { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; padding: 0; list-style: none; }
.music-tool .note-pills li { min-width: 2rem; margin: 0; padding: .375rem .625rem; border: 1px solid var(--music-border); border-radius: .25rem; background: var(--music-panel); font-size: .875rem; line-height: 1.25; text-align: center; }
.music-tool .note-pills .root-note { border-color: var(--music-accent-strong); background: var(--music-accent); color: var(--music-surface); box-shadow: 0 0 0 1px var(--music-accent-strong); font-weight: 700; }
.music-tool .empty-state { padding: 1rem; border: 1px solid var(--music-border); border-radius: var(--music-panel-radius); background: var(--music-panel); font-size: .875rem; }
.music-tool .empty-note { min-width: 0; color: var(--music-muted); }

/* Horizontal guitar diagrams: geometry is supplied by each tool. */
.music-tool .fretboard-scroll { max-width: 100%; overflow-x: auto; padding-bottom: .5rem; }
.music-tool .string-label { position: sticky; left: 0; z-index: 2; display: flex; align-items: center; justify-content: center; background: var(--music-surface); color: var(--music-muted); font-size: .8125rem; font-weight: 700; }
.music-tool .fret-cell { position: relative; display: flex; align-items: center; justify-content: center; border: 0; border-right: 1px solid var(--music-fret); border-radius: 0; background: var(--music-neck); }
.music-tool .fret-cell::before { content: ""; position: absolute; z-index: 0; left: 0; right: 0; top: 50%; height: 1px; background: var(--music-wire); pointer-events: none; }
.music-tool .fret-cell.open { background: var(--music-panel); }
.music-tool .fret-cell.nut { border-left: 3px solid var(--music-nut); }
.music-tool .fret-cell span { position: relative; z-index: 1; }
.music-tool .fret-cell.active span { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; background: var(--music-selected); color: var(--music-accent-strong); font-size: .75rem; font-weight: 700; }
.music-tool .fret-cell.root span { background: var(--music-accent); color: var(--music-surface); outline: 2px solid var(--music-accent-strong); outline-offset: 1px; }
.music-tool .fret-number { display: flex; align-items: center; justify-content: center; color: var(--music-muted); font-size: .75rem; }

/* Chordinator's original editor remains available if notebook startup fails. */
.music-tool .chordinator-tool { margin-bottom: 1rem; padding: 1rem; border: 1px solid var(--music-border); border-radius: var(--music-panel-radius); background: var(--music-panel); }
.music-tool .chordinator-tool .result-heading { margin-bottom: 1rem; }
.music-tool .chordinator-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-bottom: 1rem; }
.music-tool .chordinator-actions > button:first-child { border-color: var(--music-accent); background: var(--music-accent); color: var(--music-surface); }
.music-tool .chordinator-actions > button:first-child:hover { background: var(--music-accent-strong); }
.music-tool .chordinator-preset-control, .music-tool .chordinator-recent-settings-control { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
.music-tool .chordinator-preset-control { margin-left: auto; }
.music-tool .chordinator-recent-settings-control select { min-width: 190px; }
.music-tool .chordinator-fretboard { --fret-count: 16; min-width: 848px; }
.music-tool .chordinator-fretboard .fretboard-row, .music-tool .chordinator-fretboard .fret-number-row { display: grid; grid-template-columns: 144px repeat(var(--fret-count), minmax(44px, 1fr)); }
.music-tool .chordinator-fretboard .string-label, .music-tool .chordinator-fretboard .fret-number { min-height: 44px; }
.music-tool .chordinator-string-label { justify-content: flex-start; gap: .375rem; }
.music-tool .chordinator-string-name { flex: 0 0 15px; }
.music-tool .chordinator-string-label select { width: 60px; min-width: 60px; padding: .25rem; font-size: .8125rem; }
.music-tool .string-mute { flex: 0 0 44px; width: 44px; padding: 0; border-radius: 50%; font-size: .875rem; }
.music-tool .chordinator-fret { width: 100%; min-height: 44px; padding: 0; }
.music-tool .chordinator-fret:focus-visible { z-index: 3; }
.music-tool .chordinator-fret span { display: none; }
.music-tool .chordinator-fret.selected span { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; background: var(--music-accent); color: var(--music-surface); font-size: .75rem; font-weight: 700; }
.music-tool .chordinator-fret.selected.open span { border: 2px solid var(--music-accent); background: var(--music-selected); color: var(--music-accent-strong); }
.music-tool .chordinator-fret[data-fret="0"] { background: var(--music-panel); }
.music-tool .chordinator-fret[data-fret="1"] { border-left: 3px solid var(--music-nut); }
.music-tool .chordinator-selected-summary { margin-bottom: 0; padding-top: 1rem; border-top: 1px solid var(--music-border); }
.music-tool .chordinator-selected-summary .result-heading { align-items: center; margin-bottom: .5rem; }
.music-tool .chordinator-selected-summary .result-heading p { font-weight: 700; letter-spacing: .04em; }
.music-tool .chord-matches { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: .75rem; }
.content.music-tool .chord-match { padding: .75rem 1rem; border: 1px solid var(--music-border); border-radius: var(--music-panel-radius); background: var(--music-surface); }
.music-tool .chord-match p { margin-top: .375rem; font-size: .875rem; }
.music-tool .chord-match-heading { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.music-tool .chord-match-heading span { flex: 0 0 auto; padding: .25rem .5rem; border-radius: .25rem; background: var(--music-selected); color: var(--music-accent-strong); font-size: .75rem; font-weight: 700; }
.music-tool .close-match .chord-match-heading span { background: var(--music-warning-surface); color: var(--music-warning); }
.music-tool .match-difference { color: var(--music-warning); }
@media (max-width: 640px) {
  .music-tool .result-heading, .music-tool .chord-match-heading { display: block; }
  .music-tool .result-heading p { margin-top: .375rem; }
  .music-tool .chord-match-heading span { display: inline-block; margin-top: .375rem; }
  .music-tool .chordinator-preset-control { margin-left: 0; }
  .music-tool .chordinator-recent-settings-control { width: 100%; align-items: stretch; }
  .music-tool .chordinator-recent-settings-control select, .music-tool .chordinator-recent-settings-control button { width: 100%; }
}