/* Digital Greenhouse — music.css
   The /music section: the hub (/music) and the music theory guide
   (/music/theory). Staff examples sit on white "paper" in both themes, the
   way the kids' sheet music does, so abcjs's black ink always reads. */

/* ---------- shared ---------- */
.mt-paper {
  background: #fff;
  color: #1b1b1b;
  border: 1px solid var(--color-line, #d8e2db);
  border-radius: var(--radius-sm, 6px);
}
.mt-abc { max-width: 100%; }
.mt-abc svg { display: block; max-width: 100%; height: auto; }

.mt-play {
  display: inline-flex; align-items: center; gap: .4em;
  padding: .35em .8em;
  border: 1px solid var(--color-emerald, #1f6b4a);
  border-radius: 999px;
  background: transparent;
  color: var(--color-emerald, #1f6b4a);
  font: 600 var(--fs-sm, .9rem)/1.2 var(--font-sans, system-ui, sans-serif);
  cursor: pointer;
}
.mt-play::before { content: ""; width: 0; height: 0; border-left: .6em solid currentColor; border-top: .36em solid transparent; border-bottom: .36em solid transparent; }
.mt-play[aria-pressed="true"]::before { width: .55em; height: .6em; border: 0; background: currentColor; }
.mt-play:hover, .mt-play[aria-pressed="true"] { background: var(--color-emerald, #1f6b4a); color: #fff; }
[data-theme="dark"] .mt-play { color: var(--color-sprout, #8fd6a9); border-color: var(--color-sprout, #8fd6a9); }
[data-theme="dark"] .mt-play:hover, [data-theme="dark"] .mt-play[aria-pressed="true"] { background: var(--color-sprout, #8fd6a9); color: #0b1f17; }
.mt-play:focus-visible { outline: 3px solid var(--color-sprout, #8fd6a9); outline-offset: 2px; }

/* ---------- the guide ---------- */
.mt-cell { display: inline-block; padding: 2px 6px; line-height: 0; }
.prose .mt-dyn { text-align: center; font-family: Georgia, "Times New Roman", serif; font-style: italic; font-size: 1.15rem; line-height: 1.5; }
.prose .mt-note { margin-top: var(--space-6, 2rem); font-size: var(--fs-sm, .9rem); color: var(--text-muted, #5b6b62); }
.prose td .mt-play, .mt-nowrap { white-space: nowrap; }
.prose td .mt-play { margin-top: .35rem; font-size: var(--fs-xs, .78rem); }

.prose .mt-ex { margin: var(--space-5, 1.5rem) 0; }
.mt-ex__paper { padding: .6rem .8rem .3rem; overflow-x: auto; }
.mt-ex__paper .mt-abc { margin-inline: auto; }
.prose .mt-ex figcaption { margin-top: .5rem; font-size: var(--fs-sm, .9rem); color: var(--text-muted, #5b6b62); line-height: 1.5; }
.prose .mt-ex .mt-plays { margin: .6rem 0 0; display: flex; flex-wrap: wrap; gap: .4rem; }

.mt-plays { display: flex; flex-wrap: wrap; gap: .4rem; margin: var(--space-3, .75rem) 0 var(--space-4, 1rem); }

.mt-toc {
  margin: var(--space-5, 1.5rem) 0;
  padding: var(--space-4, 1rem) var(--space-5, 1.5rem);
  background: var(--bg-card, #fff);
  border: 1px solid var(--color-line, #d8e2db);
  border-radius: var(--radius, 10px);
}
.prose .mt-toc h2 { margin: 0 0 .5rem; font-size: 1.1rem; }
.prose .mt-toc ol { columns: 2 16rem; column-gap: 2rem; margin: 0; padding-left: 1.3rem; }
.prose .mt-toc li { margin: .15rem 0; break-inside: avoid; }
.prose .mt-toc p { margin: .75rem 0 0; }

.mt-part {
  margin: var(--space-7, 3rem) 0 var(--space-3, .75rem);
  font-size: var(--fs-xs, .78rem); font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--color-emerald, #1f6b4a);
}
[data-theme="dark"] .mt-part { color: var(--color-sprout, #8fd6a9); }

/* keyboard + circle figures */
.mt-fig { margin: var(--space-5, 1.5rem) 0; }
.mt-fig svg { display: block; width: 100%; height: auto; margin-inline: auto; }
.mt-fig figcaption { margin-top: .5rem; font-size: var(--fs-sm, .9rem); color: var(--text-muted, #5b6b62); line-height: 1.5; }
.mt-fig .mt-fig__paper { padding: .75rem; }
.mt-circle { max-width: 520px; margin-inline: auto; }
.mt-circle .c-ring { fill: var(--bg-card, #fff); stroke: var(--color-line, #d8e2db); stroke-width: 1.5; }
.mt-circle .c-inner { fill: var(--color-mist, #eef4f0); stroke: var(--color-line, #d8e2db); stroke-width: 1.5; }
.mt-circle .c-spoke { stroke: var(--color-line, #d8e2db); stroke-width: 1.2; }
.mt-circle .c-maj { fill: var(--text, #10261b); font: 700 20px var(--font-sans, system-ui, sans-serif); text-anchor: middle; dominant-baseline: central; }
.mt-circle .c-min { fill: var(--text-muted, #5b6b62); font: 600 14px var(--font-sans, system-ui, sans-serif); text-anchor: middle; dominant-baseline: central; }
.mt-circle .c-sig { fill: var(--color-emerald, #1f6b4a); font: 600 13px var(--font-sans, system-ui, sans-serif); text-anchor: middle; dominant-baseline: central; }
.mt-circle .c-mid { fill: var(--text-muted, #5b6b62); font: 600 12px var(--font-sans, system-ui, sans-serif); text-anchor: middle; }
[data-theme="dark"] .mt-circle .c-inner { fill: rgba(255, 255, 255, .05); }
[data-theme="dark"] .mt-circle .c-sig { fill: var(--color-sprout, #8fd6a9); }

/* ---------- the reference ---------- */
[data-find][hidden], [data-find-group][hidden] { display: none !important; }
.mt-ref-head {
  position: sticky; top: 4.5rem; z-index: 5;
  margin: var(--space-4, 1rem) 0;
  padding: .6rem .75rem;
  background: var(--bg-page, #f7faf8);
  border: 1px solid var(--color-line, #d8e2db);
  border-radius: var(--radius, 10px);
  display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .75rem;
}
.mt-ref-head label { font-weight: 600; font-size: var(--fs-sm, .9rem); }
.mt-ref-head input {
  flex: 1 1 14rem; min-width: 0;
  padding: .5rem .7rem;
  border: 1px solid var(--color-line, #d8e2db); border-radius: 8px;
  background: var(--bg-card, #fff); color: var(--text, #10261b);
  font: inherit;
}
.mt-ref-head output { font-size: var(--fs-sm, .9rem); color: var(--text-muted, #5b6b62); min-width: 5.5rem; }
.mt-ref-nav { display: flex; flex-wrap: wrap; gap: .35rem .9rem; margin: 0 0 var(--space-4, 1rem); font-size: var(--fs-sm, .9rem); }

.mt-syms {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 15.5rem), 1fr));
  gap: .75rem;
  margin: var(--space-4, 1rem) 0 var(--space-6, 2rem);
}
.mt-sym {
  display: grid; grid-template-columns: 7.6rem 1fr; gap: .7rem; align-items: start;
  padding: .6rem;
  background: var(--bg-card, #fff);
  border: 1px solid var(--color-line, #d8e2db);
  border-radius: var(--radius-sm, 6px);
  scroll-margin-top: 9rem;
}
.mt-sym__glyph {
  min-height: 4.4rem;
  display: flex; align-items: center; justify-content: center;
  padding: .2rem;
  overflow: hidden;
}
.mt-sym__glyph .mt-abc { width: 100%; }
.mt-glyph-text { font: italic 700 1.25rem/1.1 Georgia, "Times New Roman", serif; color: #1b1b1b; text-align: center; white-space: nowrap; }
.mt-glyph-text--plain { font-style: normal; font-family: var(--font-sans, system-ui, sans-serif); font-size: 1.05rem; }
.mt-glyph-text--big { font-size: 1.9rem; font-style: normal; }
.prose .mt-sym h4 { margin: 0 0 .2rem; font-size: 1rem; line-height: 1.3; }
.prose .mt-sym p { margin: 0; font-size: var(--fs-sm, .9rem); line-height: 1.5; }
.prose .mt-sym .mt-aka { display: block; margin-top: .25rem; font-size: var(--fs-xs, .78rem); color: var(--text-muted, #5b6b62); }

.mt-terms { margin: var(--space-4, 1rem) 0 var(--space-6, 2rem); }
.prose .mt-letter { margin: var(--space-5, 1.5rem) 0 .4rem; padding-bottom: .2rem; border-bottom: 2px solid var(--color-line, #d8e2db); font-size: 1.25rem; }
.mt-terms dl { margin: 0; }
.mt-term { padding: .45rem 0; border-bottom: 1px solid var(--color-line, #d8e2db); scroll-margin-top: 9rem; }
.mt-term dt { font-weight: 700; }
.mt-term dt dfn { font-style: normal; }
.mt-term .mt-lang { margin-left: .35rem; font-weight: 500; font-size: var(--fs-xs, .78rem); color: var(--text-muted, #5b6b62); }
.mt-term dd { margin: .1rem 0 0; line-height: 1.55; }
.mt-term:target, .mt-sym:target { outline: 3px solid var(--color-sprout, #8fd6a9); outline-offset: 2px; border-radius: 6px; }

.mt-letters { display: flex; flex-wrap: wrap; gap: .25rem; margin: .5rem 0 0; }
.prose .mt-letters a { display: inline-block; min-width: 1.9rem; padding: .15rem .35rem; text-align: center; border: 1px solid var(--color-line, #d8e2db); border-radius: 6px; text-decoration: none; font-weight: 600; }

/* ---------- the hub ---------- */
.mu-feature {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: var(--space-6, 2rem); align-items: start;
  padding: var(--space-5, 1.5rem);
  background: var(--bg-card, #fff);
  border: 1px solid var(--color-line, #d8e2db);
  border-radius: var(--radius, 10px);
  margin-bottom: var(--space-6, 2rem);
}
.mu-feature img { width: 100%; height: auto; border-radius: var(--radius-sm, 6px); display: block; }
.mu-feature h2 { margin-top: 0; }
.mu-feature h2 a { color: inherit; text-decoration: none; }
.mu-feature h2 a:hover { text-decoration: underline; }
.mu-feature .mu-links { display: flex; flex-wrap: wrap; gap: .4rem; margin: .75rem 0 1rem; padding: 0; list-style: none; }
.mu-feature .mu-links a {
  display: inline-block; padding: .3rem .7rem;
  border: 1px solid var(--color-line, #d8e2db); border-radius: 999px;
  font-size: var(--fs-sm, .9rem); text-decoration: none; color: var(--text, #10261b);
}
.mu-feature .mu-links a:hover { border-color: var(--color-emerald, #1f6b4a); color: var(--color-emerald, #1f6b4a); }
[data-theme="dark"] .mu-feature .mu-links a:hover { border-color: var(--color-sprout, #8fd6a9); color: var(--color-sprout, #8fd6a9); }
.mu-feature .mu-sub { margin: 1rem 0 .2rem; font-size: var(--fs-xs, .78rem); font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-muted, #5b6b62); }
.mu-theory-art { aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.mu-theory-art .mt-abc { flex: 1 1 auto; min-width: 0; }
.mu-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr)); gap: var(--space-4, 1rem); margin-bottom: var(--space-6, 2rem); }
.mu-h2 { margin: var(--space-7, 3rem) 0 var(--space-4, 1rem); }

@media (max-width: 760px) {
  .mu-feature { grid-template-columns: minmax(0, 1fr); gap: var(--space-4, 1rem); }
  .mt-ref-head { top: 4rem; padding: .45rem .5rem; }
  .mt-ref-head label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .mt-ref-head output { min-width: 0; }
}

@media print {
  .mt-play, .mt-ref-head, .mt-letters, .site-header, .cta-banner, .site-footer { display: none !important; }
  .mt-sym, .mt-term { break-inside: avoid; }
}