:root {
  color-scheme: dark;
  --bg: #050814;
  --panel: #0b152c;
  --elevated: #10203f;
  --border: #16324f;
  --text: #e8f7ff;
  --muted: #8fb4c9;
  --accent: #22d3ee;
  --accent-fg: #041018;
  --live: #14b8a6;
  --paper: #f7f1e4;
  --ink: #1a140c;
  --radius: 16px;
  --radius-sm: 10px;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Outfit, system-ui, -apple-system, "Segoe UI", sans-serif;
}
body {
  max-width: 72rem;
  margin: 0 auto;
  padding: calc(0.75rem + env(safe-area-inset-top)) 0.75rem calc(1.5rem + env(safe-area-inset-bottom));
}
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
.top, .transport, .top-actions, .modal-actions, .chips, .beats, .seq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}
.top { justify-content: space-between; margin-bottom: 0.65rem; }
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
  text-decoration: none;
  min-height: 44px;
}
.brand img { width: 36px; height: 36px; }
.brand strong { display: block; font-weight: 800; letter-spacing: -0.03em; }
.brand em { display: block; font-style: normal; color: var(--muted); font-size: 0.75rem; font-weight: 650; }
.teach {
  margin: 0 0 0.7rem;
  min-height: 1.4em;
  font-size: 1.05rem;
  font-weight: 750;
  letter-spacing: -0.02em;
}
.lesson-next.ready { background: var(--accent); color: var(--accent-fg); border-color: transparent; }
.spot { outline: 3px solid var(--accent); outline-offset: 3px; }
.menu-btn {
  width: 44px; height: 44px; min-width: 44px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--panel);
  display: grid; gap: 5px; place-content: center; color: var(--text);
}
.menu-btn span { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; }
.scrim { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 30; }
body.menu-open .scrim { display: block; }
.drawer {
  position: fixed; top: 0; left: 0; bottom: 0; width: min(22rem, 88vw);
  background: var(--bg); border-right: 1px solid var(--border); z-index: 40;
  overflow: auto; padding: 0.85rem 0.85rem 2rem; transform: translateX(-105%);
}
body.menu-open .drawer { transform: none; }
.drawer h2 { margin: 0.9rem 0 0.35rem; font-size: 0.75rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); }
.drawer .btn { width: 100%; justify-content: flex-start; margin-top: 0.35rem; }
.title-row { display: grid; grid-template-columns: 4.5rem 1fr; gap: 0.4rem; align-items: center; margin: 0.35rem 0; }
.title-row select { min-height: 44px; width: 100%; border-radius: 10px; border: 1px solid var(--border); background: var(--panel); color: var(--text); font: inherit; }
input[type="range"] { width: 100%; accent-color: var(--accent, #22d3ee); }
.transport .btn { min-height: 44px; }
.lesson { padding: 0.65rem 0.75rem; }
.lesson-body { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.lesson {
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin: 0 0 0.8rem;
}
.lesson h2 { margin: 0.1rem 0 0.3rem; font-size: 1.15rem; }
.lesson-kicker { margin: 0; color: var(--muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; }
.lesson-body { margin: 0.25rem 0 0; line-height: 1.45; }
.lesson-miss { margin: 0.4rem 0 0; min-height: 1.2em; font-weight: 750; }
.lesson-actions { display: flex; gap: 0.45rem; margin-top: 0.7rem; }
.staff-wrap {
  background: var(--paper);
  color: var(--ink);
  border-radius: calc(var(--radius) + 4px);
  min-height: 150px;
  padding: 0.35rem 0.45rem 0.15rem;
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.staff-wrap.did-it { outline: 3px solid var(--live); outline-offset: 2px; }
#staff svg { width: 100%; height: auto; display: block; }
#staff svg { cursor: pointer; touch-action: manipulation; }
.abcjs-note, .abcjs-rest { cursor: pointer; }
.staff-hint {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-weight: 650;
}
.abcjs-note.is-now path,
.abcjs-note.is-now { fill: #0e7490; }
.transport { margin-bottom: 0.35rem; }
.play {
  width: 3.4rem;
  height: 3.4rem;
  min-width: 48px;
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-fg);
  display: grid;
  place-items: center;
}
.play.is-on { background: var(--live); }
.play-icon {
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 8px 0 8px 14px;
  border-color: transparent transparent transparent currentColor;
  margin-left: 3px;
}
.play.is-on .play-icon {
  width: 12px;
  height: 12px;
  border: 0;
  background: currentColor;
  margin: 0;
}
.btn, .beat, .pip {
  min-height: 44px;
  min-width: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  font-weight: 700;
  padding: 0.4rem 0.75rem;
}
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: transparent; }
.btn.ghost { background: transparent; }
.btn.on, .beat.on, .pip.on {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: transparent;
}
.beat.now, .pip.now, .card.now {
  outline: 3px solid var(--live);
  outline-offset: 1px;
}
.alias, .tempo { display: flex; flex-direction: column; gap: 0.15rem; font-size: 0.75rem; font-weight: 700; color: var(--muted); }
.title-lists { margin: 0 0 0.75rem; }
.title-row, .title-build .title-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  margin: 0.35rem 0;
}
.title-row > span, .title-build .title-row > span {
  min-width: 4.4rem;
  font-weight: 750;
}
.title-lists .btn.on, .title-build .btn.on {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: transparent;
}
.alias button {
  min-width: 8.5rem;
  min-height: 44px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 0 0.7rem;
}
.tempo input { width: 8.5rem; min-height: 44px; accent-color: var(--accent); }
.status { min-height: 1.2rem; margin: 0 0 0.7rem; color: var(--muted); font-weight: 650; }
.work {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.panel {
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem;
}
.panel h2 { margin: 0; font-size: 1.05rem; }
.panel-note, .measure-name { margin: 0.3rem 0 0.55rem; color: var(--muted); font-weight: 600; }
.beats { display: grid; grid-template-columns: repeat(4, minmax(44px, 1fr)); gap: 0.4rem; }
.beat { width: 100%; font-size: 1rem; }
.card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.55rem;
  margin-bottom: 0.5rem;
  background: var(--panel);
}
.card header { display: flex; justify-content: space-between; align-items: center; gap: 0.4rem; margin-bottom: 0.4rem; }
.card header strong { font-size: 1rem; }
.pips { display: grid; grid-template-columns: repeat(4, minmax(44px, 1fr)); gap: 0.35rem; }
.pip { width: 100%; }
.seq-actions { margin-top: 0.45rem; }
.seq-actions .btn { flex: 1; }
#add-measure { width: 100%; margin-top: 0.2rem; }
.foot { margin: 1rem 0 0; color: var(--muted); font-size: 0.78rem; }
.foot a { color: var(--accent); font-weight: 700; }
.modal {
  width: min(26rem, calc(100vw - 1.5rem));
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--elevated);
  color: var(--text);
  padding: 1.1rem;
}
.modal::backdrop { background: rgba(5, 8, 20, 0.78); }
.modal h2 { margin: 0.2rem 0 0.4rem; }
.desc { margin: 0 0 0.9rem; color: var(--muted); line-height: 1.45; }
.chip { margin: 0; color: var(--live); font-size: 0.75rem; font-weight: 750; letter-spacing: 0.04em; text-transform: uppercase; }
.modal-actions .btn { flex: 1; }
.page { max-width: 40rem; }
.page h1 { letter-spacing: -0.03em; }
.page p { line-height: 1.5; }
@media (max-width: 760px) {
  .work { grid-template-columns: 1fr; }
  .staff-wrap { min-height: 120px; }
  .alias, .tempo { width: 100%; }
  .alias button, .tempo input { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .beat.now, .pip.now, .abcjs-note.is-now { outline-style: solid; }
}