/* Player di studio (/player/<slug>/): caricato solo in quella pagina. Mobile-first. */
@layer components {
  .study { padding-block: var(--space-3) 10.5rem; display: grid; gap: var(--space-3); }
  .study__head h1 { font-size: var(--step-2); }
  @media (min-width: 40rem) { .study__head h1 { font-size: var(--step-3); } }
  .study__meta { color: var(--muted); }
  .study__test { display: inline-block; margin-top: var(--space-2); padding: var(--space-1) var(--space-3); border: 1px dashed var(--accent); border-radius: var(--radius-sm); color: var(--accent); font-weight: 700; }
  .study__status { min-height: 1.6em; color: var(--muted); }
  .study__error { padding: var(--space-3) var(--space-4); border: 2px solid #b3261e; border-radius: var(--radius-sm); background: var(--surface); font-weight: 600; }
  .study__error[hidden] { display: none; }
  .study__hint { font-size: var(--step--1); color: var(--muted); }
  .study__report { margin: var(--space-2) 0 0; font-size: var(--step--1); }
  .study__grid { display: grid; gap: var(--space-5); min-width: 0; }
  .study__score, .study__side { min-width: 0; display: grid; gap: var(--space-3); align-content: start; }
  .study__side { gap: var(--space-4); }
  .study__bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-2); }
  .study__bar h2, .panel h2 { font-size: var(--step-1); }
  .study__tools { display: flex; flex-wrap: wrap; gap: var(--space-2); }

  .score-scroll {
    max-height: min(62dvh, 40rem); min-height: 8rem; overflow-x: hidden; overflow-y: auto; overscroll-behavior: contain; /* la partitura si adatta alla larghezza: mai scroll laterale */
    /* Come la carta stampata: sfondo bianco e inchiostro scuro in ogni tema; "Inverti colori" la scurisce. */
    --paper: #ffffff; --ink: #111111;
    background: var(--paper); color: var(--ink); border: 1px solid var(--border); border-radius: var(--radius);
    padding: var(--space-2); touch-action: pan-x pan-y pinch-zoom;
  }
  .score-scroll.is-inverted { --paper: #101828; --ink: #eef0f5; }
  .score-scroll { position: relative; }
  .score-scroll > svg { position: relative; z-index: 2; width: 100%; height: auto; overflow: visible; color: var(--ink); }
  /* Cursore che scorre sul sistema (come nei video) e fascia gialla del rigo della propria voce: sono <div> DIETRO la
     partitura (fascia sotto, cursore sopra la fascia), cosi' note e testo restano nitidi; posizionati da score.js. */
  .score-cursor {
    position: absolute; left: 0; top: 0; z-index: 1; width: 4px; border-radius: 2px; pointer-events: none;
    background: var(--cursor-color, #f2a900); opacity: .8; will-change: transform;
  }
  .score-cursor[hidden], .score-scroll.no-cursor .score-cursor { display: none; }
  /* la fascia sulla battuta corrente e' un'opzione (spenta di default) */
  .score-scroll:not(.show-measure) .measure-bg { display: none; }
  .score-scroll.no-myband .score-voice-band { display: none; }
  /* riquadro che si apre dal pulsante "Opzioni" della barra */
  .score-options { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-5); padding: var(--space-2) var(--space-4);
    border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-2); font-size: var(--step--1); }
  .score-options[hidden] { display: none; }
  .tool .ico { flex: none; margin-inline-end: var(--space-2); vertical-align: -0.2em; }
  .tool[aria-expanded="true"] { background: var(--accent-fill); border-color: var(--accent-fill); color: var(--on-accent); }
  .opt { display: inline-flex; align-items: center; gap: var(--space-2); min-height: var(--tap); cursor: pointer; }
  .opt input[type="checkbox"] { width: 1.25rem; height: 1.25rem; accent-color: var(--accent); }
  .opt input[type="color"] { width: 2.25rem; height: 2rem; padding: 0; border: 2px solid var(--border); border-radius: var(--radius-sm); background: none; cursor: pointer; }
  .opt input:disabled { opacity: .5; cursor: not-allowed; }
  .score-voice-band { position: absolute; z-index: 0; border-radius: var(--radius-sm); background: rgb(255 204 0 / .32); pointer-events: none; }
  /* Verovio scrive color="black" sull'svg interno e lascia i glifi senza fill (nero di default): il colore va
     impostato qui. Le fasce .measure-bg hanno la loro regola e non ne risentono. */
  .score-scroll svg svg { color: var(--ink); fill: currentColor; }
  .score-scroll g.measure, .score-scroll > svg { cursor: pointer; }
  .score-scroll .measure-bg { fill: var(--accent-fill); fill-opacity: .2; pointer-events: none; }

  .panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-4); display: grid; gap: var(--space-3); min-width: 0; }

  /* Pulsanti a due stati: aria-pressed */
  .tool {
    min-height: var(--tap); min-width: var(--tap); padding: 0 var(--space-3); display: inline-flex; align-items: center; justify-content: center;
    border: 2px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-2); color: var(--text); font-weight: 700; cursor: pointer;
  }
  .tool--text { padding-inline: var(--space-4); }
  .tool--wide { width: 100%; }
  .tool:hover:not(:disabled) { border-color: var(--accent); }
  .tool[aria-pressed="true"] { background: var(--accent-fill); border-color: var(--accent-fill); color: var(--on-accent); }
  .tool:disabled, .transport__play:disabled { opacity: .55; cursor: not-allowed; }

  .field { display: grid; gap: var(--space-1); font-weight: 600; min-width: 0; }
  .field span { font-size: var(--step--1); color: var(--muted); }
  .field select { min-height: var(--tap); padding: 0 var(--space-3); border: 2px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-2); width: 100%; }
  .loop-options { display: grid; gap: var(--space-2); }
  .loop-row { display: flex; flex-wrap: wrap; align-items: end; gap: var(--space-3); }
  .loop-row .field { min-width: 7rem; }
  /* il passaggio dopo la scritta: «Ripeti 4–11» (lo spazio non puo' stare nel testo, i pulsanti sono flex) */
  [data-loop-range]:not(:empty) { margin-inline-start: .4em; }
  .tool.is-on { border-color: var(--accent-fill); box-shadow: inset 0 0 0 1px var(--accent-fill); }
  .sound-pick { display: flex; flex-wrap: wrap; gap: var(--space-2); border: 0; padding: 0; margin: 0 0 var(--space-3); min-width: 0; }
  .sound-pick__opt { display: inline-flex; align-items: center; gap: var(--space-2); min-height: var(--tap); padding: 0 var(--space-4); border: 2px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-2); font-weight: 600; cursor: pointer; }
  .sound-pick__opt:has(input:checked) { border-color: var(--accent-fill); box-shadow: inset 0 0 0 1px var(--accent-fill); }
  .sound-pick__opt input { accent-color: var(--accent); width: 1.1rem; height: 1.1rem; }
  .sound-instr { display: grid; gap: var(--space-3); }
  .sound-instr[hidden] { display: none; }
  .sound-pick--text { margin-top: var(--space-4); }
  .sound-pick__legend { font-weight: 700; padding: 0; margin-bottom: var(--space-2); }
  .sound-pick--text .study__hint { flex-basis: 100%; margin: 0; }
  .myvoice { display: grid; grid-template-columns: 1fr auto; gap: var(--space-3); align-items: end; }
  .myvoice .tool--wide { grid-column: 1 / -1; }

  .mix { list-style: none; padding: 0; display: grid; gap: var(--space-3); }
  .mix__row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; grid-template-areas: "name mute solo" "vol vol out"; gap: var(--space-2) var(--space-3); align-items: center;
    padding-bottom: var(--space-3); border-bottom: 1px solid var(--border); }
  .mix__row:last-child { border-bottom: 0; padding-bottom: 0; }
  .mix__name { grid-area: name; min-width: 0; overflow-wrap: anywhere; font-weight: 700; display: flex; align-items: center; gap: var(--space-2); }
  .mix__vol { grid-area: vol; width: 100%; min-height: var(--tap); accent-color: var(--accent); }
  .mix__out { grid-area: out; min-width: 3.2ch; text-align: end; font-variant-numeric: tabular-nums; color: var(--muted); }
  .mix__row > [data-mute] { grid-area: mute; }
  .mix__row > [data-solo] { grid-area: solo; }
  .mix__row > .tool { min-width: 4.6rem; }
  .mix__row.is-silent .mix__name { opacity: .6; }

  /* Barra di trasporto: fissa in basso */
  .transport {
    position: fixed; inset: auto 0 0 0; z-index: 30; background: var(--surface); border-top: 2px solid var(--border);
    box-shadow: 0 -6px 24px rgb(0 0 0 / .12); padding: var(--space-2) var(--gutter) calc(var(--space-2) + env(safe-area-inset-bottom, 0px));
    display: grid; gap: var(--space-2); max-width: 100vw;
  }
  .transport__row { display: flex; align-items: center; gap: var(--space-3); max-width: var(--wrap); width: 100%; margin-inline: auto; min-width: 0; }
  .transport__play { flex: none; min-height: 3rem; min-width: 3rem; padding: 0 var(--space-4); display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
    border: 0; border-radius: 999px; background: var(--accent-fill); color: var(--on-accent); font-weight: 800; cursor: pointer; }
  .transport__play .ico-pause, .transport__play.is-playing .ico-play { display: none; }
  .transport__play.is-playing .ico-pause { display: block; }
  .transport__play [data-play-label] { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; } /* solo icona su mobile */
  .transport__time { flex: none; font-variant-numeric: tabular-nums; font-weight: 700; font-size: var(--step--1); }
  .transport__seek { flex: 1 1 auto; min-width: 0; min-height: var(--tap); accent-color: var(--accent); }
  .transport__row--2 { justify-content: space-between; }
  .transport__speed { display: flex; align-items: center; gap: var(--space-2); flex: 1 1 auto; min-width: 0; font-weight: 700; font-size: var(--step--1); }
  .transport__speed input { flex: 1 1 auto; min-width: 0; min-height: var(--tap); accent-color: var(--accent); }
  .transport__speed output { min-width: 4ch; text-align: end; font-variant-numeric: tabular-nums; }
  .study-cta { margin-block: var(--space-3); }
  /* la barra fissa non deve coprire la fine del footer (ultime righe raggiungibili con lo scorrimento) */
  .site-footer { padding-bottom: calc(var(--space-6) + 9rem); }

  @media (min-width: 40rem) {
    .transport__play [data-play-label] { position: static; width: auto; height: auto; clip-path: none; }
    .transport__row--2 { justify-content: flex-start; }
    .transport__speed { flex: 0 1 22rem; }
    .study { padding-bottom: 8.5rem; }
  }
  @media (min-width: 60rem) {
    /* Partitura a tutta larghezza (è la parte che si legge); ripetizione e mixer sotto, affiancati. */
    .study__side { grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); align-items: start; }
    .score-scroll { max-height: min(78dvh, 64rem); }
    .transport { padding-block: var(--space-3); }
    .transport__row { flex-wrap: nowrap; }
    .transport { grid-template-columns: 1fr; }
  }

  /* Pannello di caricamento dell'audio: scheda al centro con barra di avanzamento, finche' le voci non sono pronte */
  .loader {
    position: fixed; inset: 0; z-index: 70; display: grid; place-items: center; padding: var(--gutter);
    background: color-mix(in srgb, var(--bg) 80%, transparent); backdrop-filter: blur(3px); transition: opacity .3s;
  }
  .loader[hidden] { display: none; }
  .loader.is-done { opacity: 0; pointer-events: none; }
  .loader__card {
    width: min(26rem, 100%); display: grid; gap: var(--space-3); padding: var(--space-5); text-align: center;
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 10px 40px rgb(0 0 0 / .25);
  }
  .loader__card h2 { font-size: var(--step-1); }
  .loader__wave { display: flex; justify-content: center; align-items: end; gap: .3rem; height: 2.5rem; }
  .loader__wave span { width: .45rem; height: 100%; border-radius: 3px; background: var(--accent-fill); transform-origin: bottom; animation: loader-wave 1s ease-in-out infinite; }
  .loader__wave span:nth-child(2) { animation-delay: .12s; }
  .loader__wave span:nth-child(3) { animation-delay: .24s; }
  .loader__wave span:nth-child(4) { animation-delay: .36s; }
  .loader__wave span:nth-child(5) { animation-delay: .48s; }
  @keyframes loader-wave { 0%, 100% { transform: scaleY(.25); } 50% { transform: scaleY(1); } }
  .loader__row { display: flex; align-items: center; gap: var(--space-3); }
  .loader__bar { flex: 1 1 auto; min-width: 0; height: .85rem; appearance: none; border: 0; border-radius: 999px; overflow: hidden; background: var(--surface-2); }
  .loader__bar::-webkit-progress-bar { background: var(--surface-2); }
  .loader__bar::-webkit-progress-value { background: var(--accent-fill); border-radius: 999px; transition: width .25s ease; }
  .loader__bar::-moz-progress-bar { background: var(--accent-fill); border-radius: 999px; }
  .loader__pct { flex: none; min-width: 3.2ch; text-align: end; font-weight: 800; font-variant-numeric: tabular-nums; }
  .loader__count { color: var(--muted); font-size: var(--step--1); font-variant-numeric: tabular-nums; }
  .loader__hint { color: var(--muted); font-size: var(--step--1); }
  @media (prefers-reduced-motion: reduce) {
    .loader__wave span { animation: none; transform: scaleY(.6); }
    .loader, .loader__bar::-webkit-progress-value { transition: none; }
  }

  /* Partitura a schermo intero: la classe su <html> porta il riquadro della partitura sopra la pagina, con la barra di
     trasporto (solo riga principale) sempre visibile; su telefono restano solo zoom e Chiudi. */
  html.study-immersive { overflow: hidden; }
  html.study-immersive .study__score {
    position: fixed; inset: 0; z-index: 40; margin: 0; background: var(--bg);
    display: flex; flex-direction: column; gap: var(--space-2);
    padding: calc(var(--space-2) + env(safe-area-inset-top, 0px)) var(--space-3) calc(4.5rem + env(safe-area-inset-bottom, 0px)); /* sotto, la barra di trasporto */
  }
  html.study-immersive .study__score .score-scroll { flex: 1 1 auto; min-height: 0; max-height: none; }
  html.study-immersive .study__bar { justify-content: flex-end; }
  html.study-immersive [data-fs-open], html.study-immersive .study__report { display: none; }
  html.study-immersive .transport { z-index: 60; }
  html.study-immersive .transport__row--2 { display: none; }
  .fs-close { background: var(--accent-fill); border-color: var(--accent-fill); color: var(--on-accent); }
  .fs-close[hidden] { display: none; }
  @media (max-width: 40rem) {
    html.study-immersive .study__bar h2,
    html.study-immersive [data-loop-open],
    html.study-immersive [data-score-options-toggle] { display: none; }
  }
}

/* Anteprima del brano (T-924, solo in sviluppo) */
.anteprima__tag { font-size: 0.75rem; font-weight: 600; padding: 0.1rem 0.5rem; border: 1px solid var(--border); border-radius: 999px; vertical-align: middle; }
.anteprima__sez { margin-top: var(--space-4); }
.anteprima__sez h3 { margin: 0 0 var(--space-2); font-size: 1rem; }
.anteprima__tab { border-collapse: collapse; margin: var(--space-2) 0; }
.anteprima__tab caption { text-align: left; font-size: 0.875rem; padding-bottom: var(--space-1); }
.anteprima__tab th, .anteprima__tab td { padding: 0.2rem 0.75rem; border-bottom: 1px solid var(--border); text-align: left; }
.anteprima__opz { display: grid; grid-template-columns: max-content 1fr; gap: 0.15rem var(--space-3); margin: 0; }
.anteprima__opz dt { font-weight: 600; }
.anteprima__opz dd { margin: 0; overflow-wrap: anywhere; }
.anteprima__pre { white-space: pre-wrap; overflow-wrap: anywhere; margin: 0; padding: var(--space-2); border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-2); }
.anteprima__anom { display: grid; gap: var(--space-2); padding-left: 1.2rem; margin: 0; }
.anteprima textarea, .anteprima input[type="text"] { width: 100%; box-sizing: border-box; font: inherit; }
.anteprima__stato { min-height: 1.4em; }