/* Notável — landing. Usa os tokens, fontes, botões e rodapé de styles.css. */

.landing { --wide: 1080px; }
.landing main, .topbar, .landing-footer {
  max-width: var(--wide); margin-inline: auto; padding-inline: var(--space-6);
}

/* ── Barra do topo ──────────────────────────────────────────────────────── */

.topbar { display: flex; justify-content: space-between; align-items: center; height: 72px; }
.topbar-brand { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; color: var(--color-ink); text-decoration: none; }
.topbar-app { margin: 0; text-decoration: none; }

/* ── Hero ───────────────────────────────────────────────────────────────── */

.hero {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: var(--space-7); align-items: center;
  padding: var(--space-7) 0 var(--space-8);
}
.hero-title {
  margin: 0; max-width: 14ch;
  font-size: clamp(36px, 5.2vw, 60px); line-height: 1.04; font-weight: 600; letter-spacing: -0.03em;
  text-wrap: balance;
}
.hero-lede { margin: var(--space-5) 0 var(--space-6); max-width: 46ch; font-size: 18px; line-height: 29px; color: var(--color-ink-muted); }
.btn-large { min-height: 52px; padding: 0 var(--space-6); font-size: 16px; }
.hero-note { margin: var(--space-3) 0 0; font-size: 14px; line-height: 20px; color: var(--color-ink-muted); }

/* demonstração: a forma de onda vira partitura quando o cursor passa */
.demo {
  position: relative; margin: 0;
  background: var(--color-sheet); border-radius: var(--radius-sheet); box-shadow: var(--shadow-sheet);
  padding: var(--space-6) var(--space-5) var(--space-7);
  overflow: hidden;
}
.demo-wave {
  height: 72px; display: flex; align-items: center; gap: 3px;
  padding: 0 var(--space-2);
}
.demo-wave i {
  flex: 1; min-width: 2px; border-radius: 2px; background: #C3C9D6;
  transition: background-color .25s ease, opacity .4s ease;
}
.demo-wave i.is-read { background: var(--color-cobalt); opacity: .35; }
.demo-score { margin-top: var(--space-4); min-height: 120px; color: var(--color-ink); }
.demo-score svg { display: block; width: 100%; height: auto; overflow: visible; }
.demo-score .tempo, .demo-score .label, .demo-score .labelAbbr { display: none; }
.demo-score .note, .demo-score .rest, .demo-score .beam, .demo-score .tie, .demo-score .barLine:not(:first-child) {
  transition: opacity .22s ease-out, transform .22s ease-out;
}
.demo.is-armed .demo-score .note, .demo.is-armed .demo-score .rest,
.demo.is-armed .demo-score .beam, .demo.is-armed .demo-score .tie {
  opacity: 0; transform: translateY(5px); transform-box: fill-box;
}
.demo.is-armed .demo-score .is-on { opacity: 1; transform: none; }
.demo-score .note.is-fresh, .demo-score .note.is-fresh * { fill: var(--color-cobalt); stroke: var(--color-cobalt); }
.demo-playhead {
  position: absolute; top: var(--space-5); bottom: var(--space-5); left: 0; width: 2px;
  background: var(--color-cobalt); border-radius: 1px; opacity: 0;
  transform: translateX(var(--x, 0px));
}
.demo.is-playing .demo-playhead { opacity: 1; }
.demo-replay { position: absolute; right: var(--space-4); bottom: var(--space-3); margin: 0; font-size: 14px; }

/* ── Faixas de conteúdo ─────────────────────────────────────────────────── */

.band {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr); gap: var(--space-6);
  padding: var(--space-7) 0; border-top: 1px solid var(--color-staff);
}
.band-title { margin: 0; font-size: 24px; line-height: 30px; font-weight: 600; letter-spacing: -0.01em; }
.band h3 { margin: 0 0 var(--space-2); font-size: 17px; line-height: 24px; font-weight: 600; }
.band p { margin: 0; color: var(--color-ink-muted); max-width: 60ch; }

.how-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-6); }
.how-num {
  display: grid; place-items: center; width: 28px; height: 28px; margin-bottom: var(--space-3);
  border-radius: 50%; border: 1.5px solid var(--color-ink); font-size: 14px; font-weight: 600;
}

.uses-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-4) var(--space-6); }
.uses-list li { position: relative; padding-left: var(--space-5); font-size: 17px; line-height: 26px; }
/* marcador: uma cabeça de nota */
.uses-list li::before {
  content: ""; position: absolute; left: 0; top: 9px; width: 10px; height: 7.5px; border-radius: 50%;
  background: var(--color-cobalt); transform: rotate(-20deg);
}

.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }

.faq-list details { border-bottom: 1px solid var(--color-staff); }
.faq-list details:first-child { border-top: 1px solid var(--color-staff); }
.faq-list summary {
  list-style: none; cursor: pointer; padding: var(--space-4) var(--space-6) var(--space-4) 0; position: relative;
  font-size: 17px; line-height: 24px; font-weight: 500;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: ""; position: absolute; right: 4px; top: 50%; width: 9px; height: 9px; margin-top: -6px;
  border-right: 1.5px solid var(--color-ink-muted); border-bottom: 1.5px solid var(--color-ink-muted);
  transform: rotate(45deg); transition: transform .2s var(--ease-out);
}
.faq-list details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq-list details p { padding: 0 0 var(--space-5); }

/* ── Chamada final ──────────────────────────────────────────────────────── */

.final {
  text-align: center; padding: var(--space-8) 0;
  border-top: 1px solid var(--color-staff);
}
.final-title { margin: 0 auto var(--space-5); max-width: 20ch; font-size: clamp(28px, 3.6vw, 40px); line-height: 1.1; font-weight: 600; letter-spacing: -0.02em; text-wrap: balance; }

.landing-footer { margin-top: 0; padding-top: var(--space-5); padding-bottom: var(--space-7); border-top: 1px solid var(--color-staff); }

/* ── Responsivo ─────────────────────────────────────────────────────────── */

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: var(--space-6); padding-top: var(--space-5); }
  .hero-title { max-width: 16ch; }
  .band { grid-template-columns: 1fr; gap: var(--space-4); }
}
@media (max-width: 767px) {
  .landing main, .topbar, .landing-footer { padding-inline: var(--space-4); }
  .topbar { height: 60px; }
  .hero-lede { font-size: 17px; line-height: 27px; }
  .btn-large { width: 100%; }
  .how-steps, .uses-list, .feature-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .demo { margin-inline: calc(var(--space-4) * -1); border-radius: 0; }
  .final .btn-large { width: 100%; }
}