/* ============================================================================
   TEACH · MÚSICA — Componentes reutilizáveis
   ----------------------------------------------------------------------------
   Cada bloco aqui é um "tijolo" que qualquer aula reusa. Nunca refaça um
   componente inline numa aula: se precisar de algo novo e reutilizável, some
   aqui e linke. É isso que mantém o curso parecendo UM curso.
   Direção: studio minimalista. Superfícies planas, fios finos, rótulos mono.
   ========================================================================== */

/* ----------------------------------------------------------------------------
   KICKER DA AULA  ·  número + trilha + tempo estimado
   -------------------------------------------------------------------------- */
.kicker { display: flex; flex-wrap: wrap; align-items: center; gap: .7rem; margin-bottom: 1rem; }
.kicker .track {
  font-family: var(--font-mono);
  font-size: var(--text-xs); font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
}
.chip {
  display: inline-flex; align-items: center; gap: .35em;
  font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 600;
  color: var(--ink-soft); background: var(--surface); border: 1px solid var(--rule);
  border-radius: 6px; padding: .25em .6em;
}
.dek { font-size: 1.18rem; color: var(--ink-soft); margin: 0 0 1.6rem; }

/* ----------------------------------------------------------------------------
   CALLOUTS  ·  <aside class="note note--mission">…</aside>
   Variantes: mission · daw · spacing · warn · tip
   -------------------------------------------------------------------------- */
.note {
  --c: var(--accent);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--c);
  border-radius: var(--radius-sm);
  padding: .95rem 1.15rem;
  margin: 1.6rem 0;
}
.note > .label { display: flex; align-items: center; gap: .5em; margin-bottom: .35em; color: var(--c); }
.note > :last-child { margin-bottom: 0; }
.note .ico { font-size: 1.05em; line-height: 1; }
.note--mission { --c: var(--accent); }
.note--daw     { --c: var(--gold); }
.note--spacing { --c: var(--gold); border-left-style: dashed; }
.note--warn    { --c: var(--rose); }
.note--tip     { --c: var(--accent); }

/* ----------------------------------------------------------------------------
   CARD genérico e CARD DE FONTE PRIMÁRIA
   -------------------------------------------------------------------------- */
.card {
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 1.1rem 1.3rem; box-shadow: var(--shadow-sm);
}
.source {
  display: grid; grid-template-columns: auto 1fr; gap: .25rem 1rem; align-items: start;
  background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 1.05rem 1.25rem; margin: 1.8rem 0; box-shadow: var(--shadow-sm);
}
.source .badge {
  grid-row: 1 / span 2; font-size: 1.35rem;
  width: 2.5rem; height: 2.5rem; display: grid; place-items: center;
  background: var(--accent-soft); border-radius: 8px;
}
.source .label { color: var(--accent); }
.source .title { font-size: 1.05rem; font-weight: 650; margin: 0; line-height: 1.3; }
.source .meta  { font-size: var(--text-sm); color: var(--ink-soft); grid-column: 2; margin: .15rem 0 0; }

/* ----------------------------------------------------------------------------
   TESTE DE TÔNICA  ·  ver tonic-test.js
   -------------------------------------------------------------------------- */
.tonic-test {
  background: var(--surface); border: 1px solid var(--rule-strong);
  border-radius: var(--radius); padding: 1.2rem 1.3rem; margin: 1.8rem 0; box-shadow: var(--shadow);
}
.tonic-test__title { font-size: 1.08rem; font-weight: 650; margin: .35rem 0 .4rem; }
.tonic-test__copy { color: var(--ink-soft); font-size: var(--text-sm); margin: 0 0 1rem; }
.tonic-test__buttons { display: grid; gap: .5rem; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.tonic-test__button {
  font-family: var(--font-sans); text-align: left; background: var(--bg);
  border: 1.5px solid var(--rule); border-radius: var(--radius-sm);
  padding: .7em .9em; color: var(--ink); cursor: pointer; transition: border-color .12s, background .12s;
}
.tonic-test__button:hover, .tonic-test__button:focus-visible { border-color: var(--accent); background: var(--accent-soft); }
.tonic-test__hint { color: var(--ink-faint); font-family: var(--font-mono); font-size: var(--text-xs); margin: .85rem 0 0; }
@media (max-width: 460px) { .tonic-test__buttons { grid-template-columns: 1fr; } }

/* ----------------------------------------------------------------------------
   QUIZ  ·  conhecimento e ouvido (ver teach.js)
   -------------------------------------------------------------------------- */
.quiz {
  background: var(--surface); border: 1px solid var(--rule-strong);
  border-radius: var(--radius); padding: 1.2rem 1.3rem 1.3rem; margin: 1.8rem 0; box-shadow: var(--shadow);
}
.quiz__head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.quiz__score { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--ink-faint); font-weight: 600; letter-spacing: .06em; }
.quiz__q { font-size: 1.08rem; font-weight: 600; margin: .55rem 0 1rem; }
.quiz__prompt {
  font-family: var(--font-mono); display: inline-flex; align-items: center; gap: .5em;
  background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  padding: .6em 1.1em; font-size: var(--text-sm); font-weight: 700; letter-spacing: .04em;
  cursor: pointer; margin-bottom: 1rem; transition: transform .12s, filter .15s;
}
.quiz__prompt:hover { filter: brightness(1.05); transform: translateY(-1px); }
.quiz__prompt:active { transform: translateY(0); }

.quiz__options { display: grid; gap: .5rem; }
.quiz__opt {
  font-family: var(--font-sans); text-align: left;
  background: var(--bg); border: 1.5px solid var(--rule); border-radius: var(--radius-sm);
  padding: .68em .95em; font-size: 1rem; color: var(--ink); cursor: pointer;
  transition: border-color .12s, background .12s;
}
.quiz__opt:hover:not(:disabled) { border-color: var(--accent); }
.quiz__opt:disabled { cursor: default; }
.quiz__opt.is-correct { border-color: var(--good); background: var(--good-soft); }
.quiz__opt.is-wrong   { border-color: var(--rose); background: var(--rose-soft); }
.quiz__feedback {
  font-size: var(--text-sm); margin-top: .85rem; padding: .65em .95em;
  border-radius: var(--radius-sm); display: none;
}
.quiz__feedback.show { display: block; }
.quiz__feedback.ok { background: var(--good-soft); color: var(--good); }
.quiz__feedback.no { background: var(--rose-soft); color: var(--rose); }
.quiz__next {
  font-family: var(--font-mono); margin-top: .85rem; background: none; border: 0;
  color: var(--accent-ink); font-weight: 700; font-size: var(--text-sm); cursor: pointer; display: none;
}
.quiz__next.show { display: inline-block; }
.quiz__done { font-family: var(--font-mono); font-weight: 700; color: var(--good); display: none; margin-top: .5rem; }
.quiz__done.show { display: block; }

/* ----------------------------------------------------------------------------
   TECLADO INTERATIVO  (ver keyboard.js) — usa tokens próprios
   -------------------------------------------------------------------------- */
.keyboard-wrap { margin: 1.6rem 0; }
.keyboard {
  position: relative; display: flex; user-select: none;
  background: var(--kbd-frame); padding: 10px 10px 0; border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
}
.key { position: relative; cursor: pointer; border: 0; padding: 0; transition: filter .06s; }
.key--white {
  flex: 1 0 0; height: 148px; margin: 0 1px;
  background: linear-gradient(var(--kbd-white), var(--kbd-white-2));
  border-radius: 0 0 5px 5px; box-shadow: inset 0 -3px 0 rgba(0,0,0,.08);
}
.key--white:active, .key--white.is-down { filter: brightness(.92); }
.key--black {
  position: absolute; top: 10px; width: 5.6%; height: 90px; z-index: 2;
  background: linear-gradient(var(--kbd-black), var(--kbd-black-2));
  border-radius: 0 0 4px 4px; box-shadow: 0 3px 4px rgba(0,0,0,.4);
}
.key--black:active, .key--black.is-down { filter: brightness(1.4); }
.key.is-highlight.key--white { background: linear-gradient(var(--accent-soft), var(--accent)); }
.key.is-highlight.key--black { background: linear-gradient(var(--accent), var(--accent-ink)); }
.key.is-root.key--white { background: linear-gradient(var(--gold-soft), var(--gold)); }
.key.is-root.key--black { background: linear-gradient(var(--gold), #7a5410); }
.key__lbl {
  position: absolute; bottom: 7px; left: 0; right: 0; text-align: center;
  font-family: var(--font-mono); font-size: 10px; font-weight: 600; color: #6b7078; pointer-events: none;
}
.key--black .key__lbl { color: #c9ccd2; bottom: 5px; }

/* ----------------------------------------------------------------------------
   CÍRCULO DE QUINTAS  (ver fifths.js)
   -------------------------------------------------------------------------- */
.fifths-wrap { display: flex; justify-content: center; margin: 1.6rem 0; }
.fifths { width: 100%; max-width: 340px; height: auto; cursor: pointer; }
.fifths .seg { fill: var(--surface); stroke: var(--rule); stroke-width: 1; transition: fill .12s; }
.fifths .seg:hover { fill: var(--accent-soft); }
.fifths .seg.on { fill: var(--accent); }
.fifths text { font-family: var(--font-mono); font-weight: 600; fill: var(--ink); pointer-events: none; }
.fifths .maj { font-size: 15px; }
.fifths .min { font-size: 10px; fill: var(--ink-faint); }
.fifths text.on { fill: #fff; }

/* ----------------------------------------------------------------------------
   CONEXÃO MIDI  (ver midi.js)
   -------------------------------------------------------------------------- */
.midi { display: inline-flex; align-items: center; flex-wrap: wrap; gap: .7rem; margin: 1.2rem 0; }
.midi__btn {
  font-family: var(--font-mono); display: inline-flex; align-items: center; gap: .5em;
  background: var(--surface); color: var(--ink); border: 1.5px solid var(--rule-strong);
  border-radius: 8px; padding: .55em 1em; font-size: var(--text-sm); font-weight: 600;
  cursor: pointer; transition: border-color .15s, background .15s;
}
.midi__btn:hover:not(:disabled) { border-color: var(--accent); }
.midi__btn:disabled { opacity: .55; cursor: default; }
.midi__status { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--ink-faint); }
.midi__status.ok   { color: var(--good); }
.midi__status.warn { color: var(--rose); }

/* ----------------------------------------------------------------------------
   NAVEGAÇÃO ENTRE AULAS / REFERÊNCIAS  (rodapé)
   -------------------------------------------------------------------------- */
.lesson-foot { margin-top: 3rem; padding-top: 1.4rem; border-top: 1px solid var(--rule); }
.linkgrid { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.linkcard {
  display: block; background: var(--surface); border: 1px solid var(--rule);
  border-radius: var(--radius-sm); padding: .75em 1em; color: var(--ink);
}
.linkcard:hover { border-color: var(--accent); }
.linkcard .label { display: block; margin-bottom: .15em; }
.linkcard .name { font-weight: 650; font-size: 1rem; }

/* ----------------------------------------------------------------------------
   PROGRESSO / CONCLUSÃO
   -------------------------------------------------------------------------- */
.progress { display: flex; align-items: center; gap: .7rem; font-size: var(--text-sm); color: var(--ink-soft); margin: 1.4rem 0; }
.progress .label { white-space: nowrap; }
.progress__bar { flex: 1; height: 6px; background: var(--surface-2); border-radius: 100px; overflow: hidden; }
.progress__fill { height: 100%; width: 0; background: var(--accent); transition: width .4s ease; }

/* Lembrete "pergunte ao seu professor" */
.ask {
  font-size: var(--text-sm); color: var(--ink-soft);
  background: var(--surface-2); border-radius: var(--radius-sm); padding: .8em 1.1em; margin: 1.6rem 0;
}
.ask strong { color: var(--accent-ink); }