/* Shared typography, navigation, and theme come from ../../styles.css. */
:root {
  --first: #7564a1; --second: #287c72;
  --wrong: #a04c3d; --wrong-soft: #faeeea; --board: #eeece7; --string: #92908a;
  --first-key: #b8a7dd; --second-key: #88c7b5; --black-first: #7963a3; --black-second: #398775;
}
html[data-theme="dark"] {
  --first: #c0b3e0; --second: #8ac6ba; --wrong: #e4a597; --wrong-soft: #3c2c29;
  --board: #2b2c2d; --string: #919496;
}
.ear-training main { padding: 36px 0 0; }
.ear-training .site-footer { width: 100%; margin-top: 32px; padding: 20px 0; }
button:disabled { cursor: default; opacity: .45; }
h1, h2, p { margin-top: 0; }
h1 { font-size: 1.85rem; line-height: 1.2; margin-bottom: 10px; }
h2 { font-size: 1.1rem; margin-bottom: 8px; }
p { margin-bottom: 1em; }
.page-heading { margin-bottom: 27px; }
.page-heading > p:last-child { color: var(--muted); margin: 0; }
.breadcrumb { font-size: .82rem; color: var(--muted); margin-bottom: 14px; }
.breadcrumb span { padding: 0 8px; color: var(--muted); }
.settings { margin-bottom: 22px; font-family: var(--sans); font-size: .82rem; }
summary { cursor: pointer; }
.settings > summary { padding: 11px 0; color: var(--ink); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.settings > summary > span { margin-left: 16px; color: var(--muted); font-size: .76rem; }
.settings[open] > summary { border-bottom: 0; }
#settings-form { border-bottom: 1px solid var(--rule); padding: 12px 0 20px; }
.settings-grid { display: grid; grid-template-columns: 1.2fr 1.2fr .8fr .8fr 1fr; gap: 16px; }
.settings-grid label { display: flex; flex-direction: column; gap: 5px; }
select { width: 100%; min-width: 0; padding: 9px 25px 9px 9px; border: 1px solid var(--rule); border-radius: 4px; color: var(--ink); background: var(--surface); font-size: .82rem; }
.interval-options { margin: 20px 0 16px; padding: 0; border: 0; }
.interval-options legend { padding: 0; margin-bottom: 9px; }
#interval-options { display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px 14px; }
#interval-options label, .settings-checks label { display: flex; align-items: center; gap: 6px; }
input[type="checkbox"] { accent-color: var(--accent); width: 16px; height: 16px; margin: 0; flex: 0 0 auto; }
.settings-checks { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-bottom: 18px; }
.settings-footer { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.settings-footer p { margin: 0; color: var(--muted); font-size: .76rem; }
#settings-error { color: var(--wrong); margin: 10px 0 0; }
.trainer { border: 1px solid var(--rule); border-radius: 4px; background: var(--surface); overflow: hidden; }
.session-bar { display: flex; justify-content: space-between; gap: 14px; padding: 14px 24px; background: var(--surface-soft); font: .76rem/1.5 var(--sans); color: var(--muted); }
.session-score { display: flex; gap: 20px; font-variant-numeric: tabular-nums; }
.progress-track { height: 2px; background: var(--rule); }
.progress-track span { display: block; width: 0; height: 100%; background: var(--accent); transition: width 180ms ease; }
#quiz { padding: 26px 24px 27px; }
.playback-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 40px; padding: 9px 15px; border: 1px solid var(--rule); border-radius: 4px; color: var(--ink); background: var(--surface); font: 500 .82rem/1.4 var(--sans); cursor: pointer; }
.button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.button.primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.play-icon { font-size: .7rem; }
.text-button { border: 0; padding: 8px 3px; background: transparent; color: var(--muted); font: .76rem/1.4 var(--sans); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.text-button:hover:not(:disabled) { color: var(--accent); }
kbd { font: .67rem var(--sans); color: var(--muted); border: 1px solid var(--rule); border-radius: 3px; padding: 1px 4px; }
.volume-control { margin-left: auto; display: flex; align-items: center; gap: 9px; font: .7rem var(--sans); color: var(--muted); }
.volume-control input { width: 70px; accent-color: var(--accent); }
.feedback { display: flex; align-items: center; min-height: 66px; padding: 15px 0; font-size: 1rem; }
.feedback.success { color: var(--accent); }
.feedback.missed { color: var(--wrong); }
.answers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 9px; }
.answer { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 3px; min-height: 65px; padding: 11px 13px; border: 1px solid var(--rule); border-radius: 4px; background: var(--surface); color: var(--ink); text-align: left; cursor: pointer; font-family: var(--sans); }
.answer strong { font-size: .84rem; font-weight: 500; }
.answer .interval-short { color: var(--muted); font-size: .72rem; }
.answer kbd { position: absolute; right: 7px; bottom: 8px; border: 0; padding: 0; }
.answer:disabled { opacity: .5; }
.answer:hover:not(:disabled) { border-color: var(--accent); background: var(--accent-soft); }
.answer.wrong { border-color: var(--wrong); color: var(--wrong); background: var(--wrong-soft); opacity: 1; }
.answer.correct { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); opacity: 1; }
.answer.correct .interval-short { color: var(--accent); }
.instrument-section { padding: 21px 24px 18px; border-top: 1px solid var(--rule); }
.instrument-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.instrument-heading h2 { margin: 0; font-size: 1rem; }
.sound-picker { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px 20px; margin-bottom: 22px; }
.sound-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 20px; }
.sound-actions .text-button, .recording-source { font-size: .72rem; }
.recording-source { color: var(--muted); text-decoration: none; }
.recording-source:hover { color: var(--accent); text-decoration: underline; }
.instrument-tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.instrument-tabs button { padding: 8px 12px; min-height: 40px; border: 1px solid transparent; border-radius: 4px; background: transparent; color: var(--muted); font: 500 .78rem var(--sans); cursor: pointer; }
.instrument-tabs button[aria-pressed="true"] { border-color: var(--rule); color: var(--accent); background: var(--accent-soft); }
.instrument-tabs button:hover { color: var(--accent); }
.instrument-tabs small { font-size: .57rem; color: var(--muted); margin-left: 2px; }
.visual-caption { min-height: 43px; margin-top: 6px; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 16px; font: .75rem/1.5 var(--sans); color: var(--muted); }
.visual-caption p { margin: 0; }
.note-legend, .note-legend > span { display: flex; align-items: center; gap: 7px; }
.note-legend { gap: 16px; color: var(--ink); }
.note-legend i { width: 9px; height: 9px; border-radius: 50%; display: block; }
.first-dot { background: var(--first); }
.second-dot { background: var(--second); }
.instrument { margin-top: 9px; }
.piano { display: flex; position: relative; height: 165px; border: 1px solid #5f584f; border-top: 7px solid #3a3530; border-radius: 3px; background: #35302a; }
.piano-key { position: relative; flex: 1; min-width: 0; margin: 0; padding: 0; border: 0; border-right: 1px solid #99938a; border-bottom: 4px solid #d4cfc4; border-radius: 0 0 3px 3px; background: #fffcf5; color: #4e473f; cursor: pointer; opacity: 1 !important; }
.piano-key:last-child { border-right: 0; }
.piano-key.black { position: absolute; z-index: 2; top: 0; width: 4.2%; height: 62%; border: 1px solid #1b1917; border-bottom: 5px solid #151412; background: linear-gradient(90deg, #34312d, #252320); color: #f5f0e7; border-radius: 0 0 3px 3px; }
.piano-key .key-name { position: absolute; left: 0; right: 0; bottom: 10px; font: .65rem var(--sans); text-align: center; }
.piano-key.black .key-name { font-size: .54rem; bottom: 10px; }
.piano-key .key-marker { position: absolute; left: 50%; bottom: 35px; transform: translateX(-50%); display: flex; align-items: center; justify-content: center; width: 21px; height: 21px; border-radius: 50%; background: #fff7; color: #221a2f; font: 600 .67rem var(--sans); }
.piano-key.black .key-marker { bottom: 29px; width: 18px; height: 18px; }
.piano-key.note-first { background: var(--first-key); border-bottom-color: #9380b4; color: #25183e; }
.piano-key.note-second { background: var(--second-key); border-bottom-color: #579d88; color: #07382d; }
.piano-key.black.note-first { background: var(--black-first); color: #fff; }
.piano-key.black.note-second { background: var(--black-second); color: #fff; }
.piano-key:hover:not(:disabled), .piano-key.sounding { box-shadow: inset 0 0 0 3px #68529880; }
.piano-key.sounding { filter: brightness(.85); }
.piano-key:focus-visible { outline-offset: -4px; z-index: 3; }
.instrument-footer { display: flex; justify-content: space-between; align-items: center; min-height: 34px; gap: 12px; color: var(--muted); font: .7rem/1.5 var(--sans); }
.fretboard-scroll { overflow-x: auto; padding-bottom: 5px; }
.fretboard { display: block; width: 100%; min-width: 650px; height: auto; font-family: var(--sans); }
.fretboard .board { fill: var(--board); }
.fretboard .fret { stroke: var(--string); stroke-width: 1; opacity: .6; }
.fretboard .guide { stroke-dasharray: 3 5; opacity: .45; }
.fretboard .nut { stroke: var(--muted); stroke-width: 5; }
.fretboard .string { stroke: var(--string); }
.fretboard .fret-label, .fretboard .string-label { fill: var(--muted); font-size: 11px; }
.fretboard .position-dot { fill: var(--string); opacity: .22; }
.fretboard .note-position { cursor: pointer; }
.fretboard .note-position circle { fill: var(--first); stroke: var(--surface); stroke-width: 2; }
.fretboard .note-position.note-second circle { fill: var(--second); }
.fretboard .note-position text { fill: var(--surface); font-size: 10px; font-weight: 600; text-anchor: middle; dominant-baseline: middle; pointer-events: none; }
html[data-theme="dark"] .fretboard .note-position text { fill: #181613; }
.fretboard .note-position:hover circle, .fretboard .note-position:focus-visible circle, .fretboard .note-position.sounding circle { stroke: var(--ink); stroke-width: 3; }
.session-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 45px; padding: 8px 24px; border-top: 1px solid var(--rule); color: var(--muted); font: .68rem/1.6 var(--sans); }
.session-footer .text-button { font-size: .7rem; }
.help { margin-top: 24px; font-size: .88rem; color: var(--muted); }
.help summary { color: var(--ink); margin-bottom: 12px; }
.help p { max-width: 760px; }
.site-footer { display: flex; justify-content: space-between; gap: 15px; padding-top: 35px; color: var(--muted); font-size: .75rem; }
.summary { padding: 25px 24px; }
.summary h2 { font-size: 1.3rem; margin-bottom: 8px; }
.summary p { color: var(--muted); font-size: .95rem; }
.summary-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.results-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font: .8rem/1.5 var(--sans); }
caption { text-align: left; padding: 0 0 10px; color: var(--muted); font-size: .73rem; }
th, td { border-bottom: 1px solid var(--rule); padding: 9px 0; text-align: left; }
th { font-weight: 500; color: var(--muted); }
.no-script { padding: 16px; border: 1px solid var(--wrong); color: var(--wrong); }
@media (max-width: 760px) {
  .instrument-heading { display: block; }
  .settings-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  body { font-size: 17px; }
  .page-heading { margin-bottom: 21px; }
  h1 { font-size: 1.65rem; }
  .settings > summary > span { display: block; margin: 5px 0 0 15px; }
  #interval-options { grid-template-columns: 1fr 1fr; }
  .settings-footer { align-items: flex-start; }
  .settings-footer p { max-width: 170px; }
  .session-bar { padding: 12px 14px; font-size: .67rem; gap: 8px; }
  .session-score { gap: 12px; }
  #quiz { padding: 20px 14px; }
  .playback-controls { gap: 8px; }
  .volume-control { width: 100%; margin-top: 6px; justify-content: flex-end; }
  .feedback { min-height: 73px; font-size: .94rem; }
  .answers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .answer { min-height: 61px; }
  .instrument-section { padding: 17px 14px 10px; }
  .instrument-tabs { gap: 2px; }
  .instrument-tabs button { padding: 7px 9px; font-size: .72rem; }
  .visual-caption { display: block; margin: 9px 0 12px; }
  .note-legend { margin-top: 7px; }
  .piano { height: 144px; }
  .piano-key .key-name { font-size: .48rem; bottom: 8px; }
  .piano-key.black .key-name { font-size: .42rem; writing-mode: vertical-rl; bottom: 7px; left: 50%; right: auto; transform: translateX(-50%); white-space: nowrap; }
  .piano-key .key-marker { width: 15px; height: 15px; font-size: .55rem; bottom: 28px; }
  .piano-key.black .key-marker { width: 12px; height: 12px; font-size: .5rem; bottom: 34px; }
  .session-footer { padding: 8px 14px; align-items: flex-start; }
  .session-footer > span { max-width: 215px; }
  .summary { padding: 20px 14px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }

.root-note-help { max-width: 420px; color: var(--muted); font-size: .73rem; }
.sample-status { min-height: 1.5em; margin: 3px 0 0; color: var(--muted); font: .7rem/1.5 var(--sans); }
.demonstration { margin: 16px 0 8px; padding: 14px 0 0; border-top: 1px solid var(--rule); }
.demonstration-steps { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; font-family: var(--sans); }
.note-step { min-height: 38px; padding: 7px 12px; border: 1px solid var(--first); border-radius: 5px; background: var(--surface); color: var(--first); font-size: .82rem; cursor: pointer; }
#demo-second { border-color: var(--second); color: var(--second); }
.note-step.sounding { color: var(--surface); background: var(--first); box-shadow: 0 0 0 3px var(--rule); }
#demo-second.sounding { color: var(--surface); background: var(--second); }
.demo-interval { margin-left: auto; font-size: .75rem; color: var(--muted); }
#fingering-guide { margin: 10px 0 0; color: var(--muted); font: .73rem/1.6 var(--sans); }
.fretboard .suggested-path { stroke: var(--muted); stroke-width: 2; stroke-dasharray: 5 5; opacity: .6; }
.fretboard .alternate-position circle { fill: var(--board); stroke: var(--first); opacity: .85; }
.fretboard .alternate-position.note-second circle { fill: var(--board); stroke: var(--second); }
.fretboard .alternate-position text, html[data-theme="dark"] .fretboard .alternate-position text { fill: var(--first); }
.fretboard .alternate-position.note-second text, html[data-theme="dark"] .fretboard .alternate-position.note-second text { fill: var(--second); }
.fretboard .primary-position.sounding circle { stroke: var(--ink); stroke-width: 5; }
@media (max-width: 540px) {
  .ear-training main { padding: 28px 0 0; }
  .ear-training .site-footer { padding-inline: 0; }
  .demo-interval { width: 100%; margin: 0; }
}

.ear-training .page-heading { margin-bottom: 22px; }
.ear-training .page-heading > p:last-child { font-size: .9rem; }
.breadcrumb { margin-bottom: 10px; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.sound-picker { margin-bottom: 16px; }
.settings { margin-bottom: 18px; }
.settings > summary { padding-block: 10px; font-size: .88rem; }
.settings > summary > span { margin-left: 12px; }
.trainer { border-radius: 6px; }
.session-bar { padding-block: 12px; }
#quiz { padding-block: 22px; }
.feedback { min-height: 48px; padding-block: 10px; }
.instrument-section { padding-top: 18px; }
.sample-status { min-height: 0; font-size: .7rem; }
.sample-status:empty { display: none; }
.session-footer { font-size: .68rem; }
.session-footer > span { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.credits { margin-top: 18px; color: var(--muted); font-size: .78rem; }
.credits summary { color: var(--ink); }
.credits p { margin: 10px 0 0; }
.credits a { color: inherit; }
@media (max-width: 520px) {
  .ear-training .page-heading { margin-bottom: 18px; }
  .sound-picker { gap: 8px 12px; }
  .sound-actions { gap: 4px 14px; }
  .session-footer > span { max-width: 100%; }
}