/* מספרים על הצוואר: layout + components */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-17);
  line-height: 1.6;
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-tap-highlight-color: transparent;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--brass-ink); }
img, svg { display: block; }
h1, h2, h3, h4 { font-family: var(--font-ui); line-height: 1.25; margin: 0; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; inset-inline-start: 8px; top: -60px; z-index: 100; background: var(--surface); padding: 8px 12px; border-radius: 10px; }
.skip:focus { top: 8px; }
.muted { color: var(--ink-2); }
.small { font-size: var(--fs-15); }
[hidden] { display: none !important; }
bdi.mus, .mus { font-family: var(--font-ui); font-weight: 600; }
.mus.nb, .nb { white-space: nowrap; }
[tabindex="-1"]:focus:not(:focus-visible) { outline: none; }
.mus-strong { font-family: var(--font-ui); font-weight: 700; unicode-bidi: isolate; }

/* ---------- boot ---------- */
.boot { min-height: 70vh; display: grid; place-content: center; gap: 16px; text-align: center; color: var(--ink-2); }
.boot-pick { width: 56px; height: 64px; margin: 0 auto; background: var(--brass); clip-path: path("M28 0C44 0 56 8 56 20C56 36 40 56 28 64C16 56 0 36 0 20C0 8 12 0 28 0Z"); animation: breathe 1.4s ease-in-out infinite; }
@keyframes breathe { 50% { transform: scale(.9); opacity: .7; } }

/* ---------- shell ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  height: calc(var(--topbar-h) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) 12px 0;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  background: var(--surface); border-bottom: 1px solid var(--line);
}
.tb-start { display: flex; align-items: center; gap: 8px; min-width: 44px; min-height: 44px; text-decoration: none; color: var(--ink); }
.tb-title { font-family: var(--font-ui); font-weight: 700; font-size: 1.125rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tb-title.tool { font-size: 1.0625rem; }
@media (max-width: 359px) { .brand .tb-title { display: none; } }
.tb-counters { display: flex; align-items: center; gap: 2px; flex-shrink: 0; }
.counter {
  min-width: 44px; height: 44px; padding: 0 6px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center; gap: 4px;
  text-decoration: none; color: var(--ink); font-family: var(--font-ui); font-variant-numeric: tabular-nums;
}
.counter b { font-weight: 700; font-size: var(--fs-15); }
.counter .xp-frac { font-size: var(--fs-13); color: var(--ink-2); }
.counter .xp-frac.done { color: var(--success); font-size: var(--fs-17); font-weight: 800; }
.counter:hover { background: var(--surface-2); }

main { display: block; padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 24px); outline: none; }
body.fullscreen main, body.plain main { padding-bottom: 0; }

.tabbar {
  position: fixed; bottom: 0; inset-inline: 0; z-index: 20;
  height: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--surface); border-top: 1px solid var(--line);
}
.tab {
  position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  color: var(--ink-2); text-decoration: none; font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13);
}
.tab.on { color: var(--brass-ink); }
.tab.on::before { content: ""; position: absolute; top: 0; inset-inline: 22%; height: 3px; border-radius: 0 0 3px 3px; background: var(--brass-ink); }

.storage-banner { display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--surface-2); color: var(--ink); font-size: var(--fs-15); }
.storage-banner span { flex: 1; }

.page { padding: 16px; max-width: 760px; margin: 0 auto; }
.page-title { font-size: var(--fs-30); font-weight: 800; margin: 8px 0 4px; }
.page-sub { color: var(--ink-2); margin-bottom: 16px; }
.card { background: var(--surface); border-radius: var(--r-card); padding: 20px; box-shadow: var(--card-shadow); border: 1px solid var(--card-border); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 48px; padding: 0 20px; border-radius: var(--r-btn); border: 0;
  font-family: var(--font-ui); font-weight: 700; font-size: 1.0625rem; text-decoration: none;
  transition: transform 120ms var(--ease), box-shadow 120ms var(--ease), opacity 150ms;
  -webkit-user-select: none; user-select: none;
}
.btn-block { width: 100%; }
.btn-sm { min-height: 44px; padding: 0 14px; font-size: var(--fs-15); }
.btn-primary { background: var(--brass); color: var(--on-brass); box-shadow: 0 4px 0 var(--wood-deep); }
.btn-primary:active:not(:disabled) { transform: translateY(4px); box-shadow: none; }
.btn-primary:disabled { background: var(--track); color: var(--ink-2); box-shadow: 0 4px 0 var(--line); cursor: default; }
.btn-secondary { background: var(--surface); color: var(--ink); border: 2px solid var(--line); box-shadow: 0 3px 0 var(--line); }
.btn-secondary:active { transform: translateY(3px); box-shadow: none; }
.btn-ghost { background: transparent; color: var(--brass-ink); }
.btn-ghost:hover { background: var(--surface-2); }
.btn-danger { background: var(--error); color: #fff; box-shadow: 0 4px 0 var(--wood-deep); }
.btn-danger:disabled { opacity: .45; }
.danger { color: var(--error) !important; }
.btn-wood { background: rgb(244 231 212 / .12); color: var(--wood-text); border: 1px solid rgb(227 182 90 / .45); min-height: 44px; }
.btn-col { display: flex; flex-direction: column; gap: 12px; margin-top: 8px; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }
.icon-btn {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px; border: 0; background: transparent;
  display: inline-flex; align-items: center; justify-content: center; color: var(--ink-2); text-decoration: none;
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }
.icon-btn.sm { width: 44px; height: 44px; }
.link-btn { background: none; border: 0; padding: 4px 8px; min-height: 44px; min-width: 44px; color: var(--brass-ink); font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); }
.round-btn { width: 56px; height: 56px; border-radius: 50%; border: 2px solid var(--line); background: var(--surface); box-shadow: 0 3px 0 var(--line); display: grid; place-items: center; color: var(--ink); }
.round-btn:active { transform: translateY(3px); box-shadow: none; }
.big-play { width: 72px; height: 72px; border-radius: 50%; border: 0; margin: 16px auto; display: grid; place-items: center; background: var(--brass); color: var(--on-brass); box-shadow: 0 4px 0 var(--wood-deep); }
.big-play:active { transform: translateY(4px); box-shadow: none; }
.chip-btn {
  min-height: 44px; padding: 0 14px; border-radius: var(--r-chip); border: 2px solid var(--line); background: var(--surface);
  font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); display: inline-flex; align-items: center; gap: 6px; color: var(--ink);
}
.chip-btn[aria-pressed="true"], .chip-btn[aria-checked="true"], .chip-btn.on { border-color: var(--brass-ink); background: var(--surface-2); color: var(--brass-ink); }
.chips-row { display: flex; flex-wrap: wrap; gap: 8px; }
.seg { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 4px; background: var(--surface-2); border-radius: 14px; max-width: 100%; }
.seg-btn { min-height: 44px; min-width: 44px; padding: 0 12px; border: 0; border-radius: 10px; background: transparent; font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); color: var(--ink-2); }
.seg-btn[aria-pressed="true"] { background: var(--surface); color: var(--brass-ink); box-shadow: 0 1px 0 var(--line), 0 2px 6px rgb(0 0 0 / .08); }
.text-input { width: 100%; min-height: 48px; padding: 10px 14px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); }
.text-input:focus { border-color: var(--brass-ink); outline: none; }
.slider { width: 100%; accent-color: var(--brass-strong); height: 44px; }

/* switch */
.switch { display: flex; align-items: center; gap: 12px; min-height: 44px; cursor: pointer; width: 100%; }
.switch-input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch-ui { width: 46px; height: 28px; border-radius: 14px; background: var(--track); position: relative; flex-shrink: 0; transition: background 150ms; }
.switch-ui::after { content: ""; position: absolute; top: 3px; inset-inline-start: 3px; width: 22px; height: 22px; border-radius: 50%; background: var(--surface); box-shadow: 0 1px 3px rgb(0 0 0 / .25); transition: transform 150ms var(--ease); }
.switch-input:checked + .switch-ui { background: var(--brass-strong); }
.switch-input:checked + .switch-ui::after { transform: translateX(-18px); }
.switch-input:focus-visible + .switch-ui { outline: 3px solid var(--focus); outline-offset: 2px; }
.switch-label { flex: 1; }

/* tags + timestamp chips */
.tag { display: inline-flex; align-items: center; gap: 4px; padding: 1px 10px; border-radius: var(--r-chip); font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); line-height: 1.6; vertical-align: 1px; white-space: nowrap; }
.tag-recon { border: 1.5px dotted var(--ink-2); color: var(--ink-2); }
.tag-note { background: color-mix(in srgb, var(--info) 14%, transparent); color: var(--info); }
.tag-bonus { border: 1.5px solid var(--brass-ink); color: var(--brass-ink); }
.tag-suggest { background: var(--surface-2); color: var(--ink-2); }
.tag-mine { background: var(--surface-2); color: var(--brass-ink); }
.ts { display: inline-flex; align-items: center; padding: 0 9px; border-radius: var(--r-chip); background: var(--surface-2); color: var(--brass-ink); font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); line-height: 1.7; white-space: nowrap; unicode-bidi: isolate; vertical-align: 1px; border: 0; }
.ts-link { cursor: pointer; }
/* public build (no recording): a quiet reference, not a tappable-looking pill */
.ts.ts-plain, .fbk .ts.ts-plain, .lh-gist .ts.ts-plain, .lh-goal .ts.ts-plain { background: none; padding: 0 2px; color: var(--ink-2); font-weight: 600; opacity: .9; }
.wood .ts.ts-plain { color: var(--wood-text); opacity: .8; }

/* ---------- path ---------- */
.greet { padding: 4px 0 12px; }
.greet-h { font-size: var(--fs-24); font-weight: 800; }
.greet-sub { color: var(--ink-2); font-family: var(--font-ui); font-weight: 500; }
.band { margin-bottom: 24px; }
.wood {
  background: linear-gradient(135deg, #5B3A22, #7A4E2D 55%, #5B3A22), repeating-linear-gradient(100deg, rgb(255 255 255 / .03) 0 2px, transparent 2px 9px);
  background-blend-mode: normal;
  color: var(--wood-text);
  border-radius: var(--r-card);
  box-shadow: inset 0 0 0 1px rgb(227 182 90 / .35), var(--card-shadow);
  position: relative; overflow: hidden;
}
.wood::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: repeating-linear-gradient(100deg, rgb(255 255 255 / .035) 0 2px, transparent 2px 9px); }
.lesson-head { padding: 20px; }
.lh-meta { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); opacity: .8; }
.lh-title { font-size: 1.625rem; font-weight: 800; margin: 4px 0 8px; color: var(--wood-text); }
.lh-title.sm { font-size: var(--fs-24); }
.lh-gist { font-size: var(--fs-15); line-height: 1.6; }
.lh-gist .ts { background: rgb(244 231 212 / .14); color: var(--wood-text); }
.lh-more { color: var(--wood-text); text-decoration: underline; text-underline-offset: 3px; position: relative; z-index: 1; }
.clamp3 { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.clamp4, .clamp { display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.lh-goal { margin: 12px 0 0; padding: 10px 14px; border-inline-start: 3px solid var(--gold-hi); background: rgb(0 0 0 / .14); border-radius: 0 12px 12px 0; }
.lh-goal blockquote { margin: 0 0 6px; font-size: var(--fs-15); }
.lh-goal-cap { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); opacity: .8; margin-bottom: 2px; }
.lh-goal .ts { background: rgb(244 231 212 / .14); color: var(--wood-text); }
.lh-actions { margin-top: 14px; position: relative; z-index: 1; display: flex; gap: 8px; }

.path-col { display: flex; flex-direction: column; align-items: center; gap: 28px; padding: 32px 0 8px; }
.node-wrap { position: relative; display: flex; flex-direction: column; align-items: center; gap: 6px; width: 120px; }
.node {
  position: relative; width: 96px; height: 96px; border: 0; padding: 0; background: transparent; display: grid; place-items: center;
}
.node-ring { position: absolute; inset: 0; width: 96px; height: 96px; }
.node-face {
  width: 76px; height: 76px; border-radius: 50%; display: grid; place-items: center;
  background: var(--surface-2); border: 3px solid var(--wood); box-shadow: 0 4px 0 var(--wood-deep);
  transition: transform 120ms var(--ease), box-shadow 120ms var(--ease);
}
.node:active .node-face { transform: translateY(4px); box-shadow: none; }
.node-emoji { font-size: 2rem; line-height: 1; }
.node-new .node-emoji { opacity: .7; }
.node-recommended .node-face, .node-progress .node-face { background: var(--brass); border-color: var(--brass); }
.node-complete .node-face { background: var(--brass-strong); border-color: var(--brass-strong); }
.node-gold .node-face { background: linear-gradient(145deg, var(--gold-hi), var(--brass)); border-color: var(--gold-hi); box-shadow: 0 4px 0 var(--wood-deep), inset 0 2px 6px rgb(255 255 255 / .45); }
.node-recommended::before { content: ""; position: absolute; inset: 6px; border-radius: 50%; box-shadow: 0 0 0 0 color-mix(in srgb, var(--brass) 60%, transparent); animation: halo 2s infinite; }
@keyframes halo { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--brass) 55%, transparent); } 70% { box-shadow: 0 0 0 16px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
.node-check { position: absolute; top: 6px; left: 6px; width: 24px; height: 24px; border-radius: 50%; background: var(--success); color: var(--on-status); font-size: 14px; font-weight: 800; display: grid; place-items: center; border: 2px solid var(--bg); }
.node-bubble {
  position: absolute; top: -34px; padding: 4px 12px; border-radius: 10px; background: var(--surface); border: 2px solid var(--brass);
  font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-15); color: var(--brass-ink); white-space: nowrap; z-index: 2;
  animation: bob 2s ease-in-out infinite;
}
.node-bubble::after { content: ""; position: absolute; bottom: -7px; left: 50%; width: 10px; height: 10px; background: var(--surface); border-right: 2px solid var(--brass); border-bottom: 2px solid var(--brass); transform: translateX(-50%) rotate(45deg); }
@keyframes bob { 50% { transform: translateY(-3px); } }
.pips { display: flex; gap: 6px; }
.pips i { width: 8px; height: 8px; border-radius: 50%; background: var(--track); }
.pips i.on { background: var(--brass-strong); }
.node-title { font-family: var(--font-ui); font-weight: 600; font-size: .875rem; text-align: center; max-width: 120px; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; text-wrap: balance; }
.node-square .node-face { border-radius: 22px; }
.node-next .node-face, .node.node-next { width: 76px; height: 76px; border-radius: 50%; border: 3px dashed var(--track); color: var(--ink-2); font-size: 1.75rem; display: grid; place-items: center; }

/* node popover */
.node-pop .pop-top { display: flex; gap: 16px; align-items: flex-start; }
.pop-info { flex: 1; min-width: 0; }
.pop-concept { color: var(--ink); }
.pop-levels { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.pop-level { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); color: var(--ink-2); }
.pop-level i { width: 10px; height: 10px; border-radius: 50%; background: var(--track); }
.pop-level.on i { background: var(--brass-strong); }
.pop-level.on { color: var(--ink); }
.pop-ring { display: flex; flex-direction: column; align-items: center; gap: 2px; color: var(--ink-2); font-size: var(--fs-13); }
.pop-emoji { font-size: 1.5rem; }
.ring-box { position: relative; display: grid; place-items: center; }
.ring-box .ring { position: absolute; inset: 0; width: 100%; height: 100%; }
.ring-pct { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-15); font-variant-numeric: tabular-nums; position: relative; }

/* ---------- sheets ---------- */
#sheets { position: relative; z-index: 50; }
.sheet-wrap { position: fixed; inset: 0; z-index: 50; }
.scrim { position: absolute; inset: 0; background: var(--scrim); opacity: 0; transition: opacity 200ms var(--ease); }
.sheet {
  position: absolute; bottom: 0; inset-inline: 0; max-height: 88vh; max-height: 88dvh;
  background: var(--surface); border-radius: var(--r-sheet) var(--r-sheet) 0 0;
  display: flex; flex-direction: column; transform: translateY(100%); transition: transform 200ms var(--ease);
  box-shadow: 0 -8px 32px rgb(0 0 0 / .18); outline: none;
  padding-bottom: env(safe-area-inset-bottom);
  max-width: 640px; margin: 0 auto;
}
.sheet-wrap.open .scrim { opacity: 1; }
.sheet-wrap.open .sheet { transform: translateY(0); }
.sheet-handle { width: 40px; height: 5px; border-radius: 3px; background: var(--track); margin: 8px auto 0; flex-shrink: 0; }
.sheet-head { display: flex; align-items: center; gap: 12px; padding: 12px 16px 8px 8px; flex-shrink: 0; }
.sheet-titles { flex: 1; min-width: 0; padding-inline-start: 8px; }
.sheet-title { font-size: var(--fs-20); font-weight: 800; }
.sheet-sub { color: var(--ink-2); font-size: var(--fs-15); }
.sheet-body { overflow-y: auto; padding: 4px 16px 20px; overscroll-behavior: contain; }
@media (min-width: 900px) {
  .sheet.sheet-side { top: 0; bottom: 0; inset-inline-start: 0; inset-inline-end: auto; width: 420px; max-height: none; border-radius: 0; transform: translateX(100%); margin: 0; }
  .sheet-wrap.open .sheet.sheet-side { transform: translateX(0); }
  .sheet.sheet-side .sheet-handle { display: none; }
}
.confirm { display: flex; flex-direction: column; gap: 12px; }
.confirm-text { color: var(--ink-2); }
.teacher-avatar.guide { background: var(--surface-2); font-size: 1.25rem; }
.teacher-avatar { width: 40px; height: 40px; border-radius: 50%; background: var(--brass); color: var(--on-brass); display: grid; place-items: center; font-family: var(--font-ui); font-weight: 800; font-size: 1.5rem; flex-shrink: 0; margin-inline-start: 8px; }

/* toasts */
#toasts { position: fixed; z-index: 70; bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom) + 16px); inset-inline: 16px; display: flex; flex-direction: column; align-items: center; gap: 8px; pointer-events: none; }
body.fullscreen #toasts { bottom: calc(100px + env(safe-area-inset-bottom)); }
.toast { background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 12px; font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); opacity: 0; transform: translateY(8px); transition: all 220ms var(--ease); max-width: 100%; text-align: center; }
.toast.in { opacity: 1; transform: none; }

/* ---------- session ---------- */
.session { position: fixed; inset: 0; z-index: 30; display: flex; flex-direction: column; background: var(--bg); }
.ses-head { height: calc(56px + env(safe-area-inset-top)); padding: env(safe-area-inset-top) 8px 0; display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.ses-bar { flex: 1; height: 10px; border-radius: 5px; background: var(--track); overflow: hidden; display: flex; }
.ses-bar i { display: block; height: 100%; width: 0; background: var(--brass-strong); border-radius: 5px; transition: width 250ms var(--ease); }
.combo { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-13); color: var(--brass-ink); white-space: nowrap; }
.ses-scroll { flex: 1; overflow-y: auto; overscroll-behavior: contain; }
.ses-ex { padding: 8px 16px 24px; max-width: 640px; margin: 0 auto; }
.ex-badges { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; margin-bottom: 8px; font-size: var(--fs-13); font-family: var(--font-ui); font-weight: 600; }
.badge-src { color: var(--ink-2); display: inline-flex; align-items: center; gap: 4px; }
.badge-skill { color: var(--ink-2); }
.retry-badge { color: var(--brass-ink); font-weight: 700; }
.learn-badge { color: var(--brass-ink); font-weight: 700; }
.ex-q { font-size: 1.375rem; font-weight: 700; margin-bottom: 16px; outline: none; text-wrap: balance; }
.ses-foot { padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); border-top: 1px solid var(--line); flex-shrink: 0; background: var(--bg); }
.ses-foot .btn, .fbk .btn-primary { max-width: 640px; margin-inline: auto; display: flex; }

.ex-chiprow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 16px; }
.key-badge { display: inline-flex; align-items: center; gap: 4px; min-height: 36px; padding: 0 14px; border-radius: var(--r-chip); background: var(--surface-2); font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); }
.strings-badge { color: var(--ink-2); font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); }
.deg-circle { width: 56px; height: 56px; border-radius: 50%; background: var(--brass); color: var(--on-brass); display: grid; place-items: center; font-family: var(--font-ui); font-weight: 800; font-size: 1.75rem; box-shadow: 0 3px 0 var(--wood-deep); }
.deg-circle.sm { width: 40px; height: 40px; font-size: 1.25rem; }
.chord-pill { display: inline-flex; align-items: center; height: 56px; padding: 0 22px; border-radius: 28px; background: var(--surface); border: 2px solid var(--line); font-size: 1.75rem; }
.chord-pill.heb { font-size: var(--fs-20); font-family: var(--font-ui); font-weight: 700; height: 48px; }

.options { display: grid; gap: 12px; }
.options.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.options.numeric.two-col { grid-template-columns: repeat(auto-fit, minmax(72px, 1fr)); }
@media (max-width: 279px) { .options.two-col { grid-template-columns: 1fr; } }
.opt {
  position: relative; min-height: 56px; padding: 10px 14px 10px 40px; border-radius: var(--r-btn); border: 2px solid var(--line); background: var(--surface);
  box-shadow: 0 3px 0 var(--line); text-align: start; display: flex; align-items: center; gap: 10px; font-size: var(--fs-17); line-height: 1.4;
  transition: transform 100ms var(--ease), border-color 120ms, background 120ms;
}
.opt:active:not(:disabled) { transform: translateY(3px); box-shadow: none; }
.opt.selected { border-color: var(--brass-ink); background: var(--surface-2); }
.opt-num { position: absolute; inset-inline-end: 10px; top: 50%; transform: translateY(-50%); width: 22px; height: 22px; border-radius: 6px; border: 1.5px solid var(--line); color: var(--ink-2); font-family: var(--font-ui); font-size: 12px; font-weight: 700; display: grid; place-items: center; }
/* keyboard badges are a desktop affordance: none on touch */
@media (hover: none), (pointer: coarse) { .opt-num { display: none; } }
.opt-text { flex: 1; }
.two-col .opt { justify-content: center; text-align: center; padding: 10px 34px; }
.two-col .opt-text { font-family: var(--font-ui); font-weight: 700; }
.opt-digit { flex: 1; text-align: center; font-family: var(--font-ui); font-weight: 800; font-size: 1.75rem; font-variant-numeric: tabular-nums; }
.opt.ok { border-color: var(--success); background: var(--success-tint); box-shadow: 0 3px 0 var(--success); }
.opt.bad { border-color: var(--error); background: var(--error-tint); box-shadow: 0 3px 0 var(--error); }
.opt-mark { position: absolute; inset-inline-end: 8px; top: 50%; transform: translateY(-50%); width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; color: var(--on-status); font-weight: 800; font-size: 14px; }
.opt.ok .opt-mark { background: var(--success); }
.opt.bad .opt-mark { background: var(--error); }
.opt.ok .opt-num, .opt.bad .opt-num { display: none; }
/* quality-sequence options: one row of 7 chips (M m m M M m ø) */
.options.chips .opt { justify-content: center; padding: 8px 34px; }
.q-row { display: inline-flex; gap: 4px; direction: ltr; }
.q-cell { display: flex; flex-direction: column; align-items: center; gap: 1px; }
.q-cell small { font-family: var(--font-ui); font-size: 11px; font-weight: 700; color: var(--ink-2); line-height: 1; }
.q-chip { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font-family: var(--font-ui); font-weight: 800; font-size: 15px; line-height: 1; }
.q-chip.sm { width: 22px; height: 22px; font-size: 13px; border-radius: 6px; display: inline-grid; vertical-align: middle; }
.q-maj { background: var(--brass); color: var(--on-brass); }
.q-min { background: var(--surface-2); color: var(--ink); box-shadow: inset 0 0 0 2px var(--deg-6); }
.q-hdim { background: var(--ink); color: var(--bg); }
.q-dim { background: var(--ink-2); color: var(--bg); }
.opt:disabled { cursor: default; color: var(--ink); }
.pop { animation: pop 220ms var(--ease); }
@keyframes pop { 50% { transform: scale(1.06); } }
.shake { animation: shake 300ms; }
@keyframes shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }

.blank-sentence { font-size: var(--fs-20); line-height: 2.2; margin-bottom: 20px; }
.blank-slot { display: inline-flex; align-items: center; justify-content: center; min-width: 72px; min-height: 44px; padding: 0 10px; margin: 0 4px; border: 2px dashed var(--wood); border-radius: 10px; background: var(--surface); vertical-align: middle; font-family: var(--font-ui); font-weight: 700; color: var(--ink); line-height: 1.3; }
.blank-slot.filled { border-style: solid; border-color: var(--brass-ink); background: var(--surface-2); }
.blank-slot.ok { border-color: var(--success); background: var(--success-tint); }
.blank-slot.bad { border-color: var(--error); background: var(--error-tint); }
.blank-slot.static { border-style: dotted; color: var(--ink-2); }

/* clip player */
.clip-player { background: var(--surface); border-radius: var(--r-card); padding: 16px; margin-bottom: 16px; box-shadow: var(--card-shadow); border: 1px solid var(--card-border); }
.clip-row { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.clip-cell { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.clip-btn { width: 64px; height: 64px; border-radius: 50%; border: 0; background: var(--brass); color: var(--on-brass); display: grid; place-items: center; box-shadow: 0 4px 0 var(--wood-deep); }
.clip-btn:active { transform: translateY(4px); box-shadow: none; }
.clip-btn.playing { background: var(--gold-hi); }
.clip-label { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); color: var(--ink-2); }
.clip-chips { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-15); color: var(--brass-ink); background: var(--surface-2); padding: 2px 10px; border-radius: 999px; }
.clip-tools { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; gap: 12px; }
.beat-dots { display: flex; gap: 8px; }
.beat-dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--track); transition: transform 80ms, background 80ms; }
.beat-dots i.on { background: var(--brass-strong); transform: scale(1.35); }
.turtle.on { border-color: var(--brass-ink); color: var(--brass-ink); background: var(--surface-2); }

/* order */
.slot-row { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 24px; }
.slot-cell { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.slot { position: relative; min-width: 64px; height: 56px; padding: 0 10px; border-radius: var(--r-btn); border: 2px dashed var(--wood); background: transparent; font-size: var(--fs-20); }
.slot.filled { border-style: solid; border-color: var(--line); background: var(--surface); box-shadow: 0 3px 0 var(--line); }
.slot.ok { border-color: var(--success); background: var(--success-tint); box-shadow: 0 3px 0 var(--success); }
.slot.bad { border-color: var(--error); background: var(--error-tint); box-shadow: 0 3px 0 var(--error); }
.slot-mark { position: absolute; top: -9px; inset-inline-end: -9px; width: 20px; height: 20px; border-radius: 50%; font-size: 12px; color: var(--on-status); display: grid; place-items: center; font-weight: 800; }
.slot.ok .slot-mark { background: var(--success); }
.slot.bad .slot-mark { background: var(--error); }
.slot-deg { font-family: var(--font-ui); font-weight: 700; font-size: 1rem; color: var(--ink-2); }
.slot-fix { font-family: var(--font-ui); font-weight: 700; color: var(--success); font-size: var(--fs-15); }
.pool, .tray { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tile { min-width: 64px; min-height: 52px; padding: 4px 14px; border-radius: var(--r-btn); border: 2px solid var(--line); background: var(--surface); box-shadow: 0 3px 0 var(--line); font-size: var(--fs-20); display: inline-flex; flex-direction: column; align-items: center; justify-content: center; position: relative; transition: transform 150ms var(--ease), opacity 150ms; }
.tile:active:not(:disabled) { transform: translateY(3px); box-shadow: none; }
.tile.used { opacity: .25; }
.tile small { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-13); color: var(--ink-2); line-height: 1; }
.tile.lifted { transform: translateY(-4px); border-color: var(--brass-ink); box-shadow: 0 7px 0 var(--brass-ink); }
.tile.ok { border-color: var(--success); background: var(--success-tint); }
.tile.bad { border-color: var(--error); background: var(--error-tint); }
.tile-mark { position: absolute; top: -9px; inset-inline-end: -9px; width: 20px; height: 20px; border-radius: 50%; font-size: 12px; color: var(--on-status); display: grid; place-items: center; font-weight: 800; }
.tile.ok .tile-mark { background: var(--success); }
.tile.bad .tile-mark { background: var(--error); }
.tile.moving { animation: slidein 250ms var(--ease); }
@keyframes slidein { from { opacity: 0; transform: translateY(-16px); } }
.listen-btn { margin-top: 8px; }
.fb-extra-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.prog-line { font-size: var(--fs-17); }

/* buckets */
.tray { min-height: 64px; padding: 8px; border-radius: 16px; background: var(--surface-2); margin-bottom: 8px; align-items: center; }
.tray-empty { color: var(--ink-2); font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); }
.hint { text-align: center; color: var(--ink-2); font-size: var(--fs-15); margin-bottom: 12px; }
.bucket-list { display: flex; flex-direction: column; gap: 12px; }
.bucket-wrap { border: 2px dashed var(--wood); border-radius: 16px; padding: 8px; min-height: 72px; transition: border-color 150ms, background 150ms; cursor: pointer; }
.bucket-wrap.armed { border-color: var(--brass-ink); background: color-mix(in srgb, var(--brass) 8%, transparent); }
.bucket { width: 100%; min-height: 44px; border: 0; background: transparent; text-align: start; font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-17); color: var(--ink); padding: 0 6px; }
.bucket-zone { display: flex; flex-wrap: wrap; gap: 8px; min-height: 8px; }

/* fretboard */
.fb-holder { display: flex; justify-content: center; margin: 4px 0 8px; }
.fb { display: grid; position: relative; user-select: none; -webkit-user-select: none; touch-action: manipulation; }
.fb-v { width: 100%; max-width: 380px; }
.fb-h { width: 100%; max-width: 980px; overflow-x: auto; }
.fb-board { background: repeating-linear-gradient(90deg, rgb(255 255 255 / .03) 0 2px, transparent 2px 4px), linear-gradient(var(--board-1), var(--board-2)); border-radius: 6px; z-index: 0; }
.fb-h .fb-board { background: repeating-linear-gradient(0deg, rgb(255 255 255 / .03) 0 2px, transparent 2px 4px), linear-gradient(90deg, var(--board-1), var(--board-2)); }
.fb-wire { z-index: 2; pointer-events: none; }
.fb-v .fb-wire { align-self: end; height: 2px; background: var(--fret); }
.fb-h .fb-wire { justify-self: end; width: 2px; background: var(--fret); }
.fb-h.fb-lefty .fb-wire { justify-self: start; }
.fb-nut { z-index: 2; pointer-events: none; }
.fb-v .fb-nut { align-self: end; height: 6px; background: var(--nut); border-radius: 2px; }
.fb-h .fb-nut { justify-self: end; width: 6px; background: var(--nut); border-radius: 2px; }
.fb-h.fb-lefty .fb-nut { justify-self: start; }
.fb-string { z-index: 3; pointer-events: none; background: var(--string-plain); }
.fb-string.wound { background: var(--string-wound); }
.fb-string.dim { opacity: .4; }
.fb-v .fb-string { justify-self: center; width: var(--sw); }
.fb-h .fb-string { align-self: center; height: var(--sw); }
.fb-inlay { z-index: 1; display: grid; place-items: center; pointer-events: none; }
.fb-inlay i { width: 10px; height: 10px; border-radius: 50%; background: var(--inlay); opacity: .85; }
.fb-num { font-family: var(--font-ui); font-weight: 600; font-size: 12px; color: var(--ink-2); display: grid; place-items: center; }
.fb-sname { display: flex; flex-direction: column; align-items: center; justify-content: flex-end; padding-bottom: 3px; font-family: var(--font-ui); color: var(--ink-2); line-height: 1.05; }
.fb-h .fb-sname { flex-direction: row; justify-content: center; align-items: center; gap: 3px; padding: 0; }
.fb-sname b { font-size: 13px; font-weight: 600; }
.fb-sname small { font-size: 11px; font-weight: 600; opacity: .8; }
.fb-sname.on { color: var(--brass-ink); }
.fb-sname.on b { font-weight: 800; }
.fb-cell { z-index: 4; position: relative; border: 0; background: transparent; padding: 0; min-width: 0; min-height: 0; display: grid; place-items: center; border-radius: 6px; }
.fb-cell.off { cursor: default; }
.fb-cell:not(.off):hover { background: rgb(227 182 90 / .12); }
.fb-cell:focus-visible { outline-offset: -3px; }
.fb-flash { position: absolute; width: 36px; height: 36px; border-radius: 50%; border: 3px solid var(--brass); animation: flash 380ms var(--ease) forwards; pointer-events: none; }
@keyframes flash { from { transform: scale(.6); opacity: 1; } to { transform: scale(1.25); opacity: 0; } }
.fb-mark { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-ui); font-weight: 800; font-size: 14px; color: var(--deg-ink); background: var(--deg-1); position: relative; z-index: 5; box-shadow: 0 2px 4px rgb(0 0 0 / .35); line-height: 1; }
.fb-mark small { font-size: 9px; position: absolute; top: -4px; inset-inline-end: -4px; width: 14px; height: 14px; border-radius: 50%; background: inherit; display: grid; place-items: center; }
.fb-mark.k-root { background: var(--deg-1); box-shadow: 0 0 0 2px var(--wood-deep), 0 2px 4px rgb(0 0 0 / .35); }
.fb-mark.d1 { background: var(--deg-1); }
.fb-mark.d2 { background: var(--deg-2); }
.fb-mark.d3 { background: var(--deg-3); }
.fb-mark.d4 { background: var(--deg-4); }
.fb-mark.d5 { background: var(--deg-5); box-shadow: 0 0 0 2px var(--deg-1), 0 2px 4px rgb(0 0 0 / .35); }
.fb-mark.d6 { background: var(--deg-6); }
.fb-mark.d7 { background: var(--deg-7); }
.fb-mark.k-correct { background: #2F7044; color: #fff; box-shadow: 0 0 0 2px #E3F0E2; }
.fb-mark.k-wrong { background: #A8402F; color: #fff; }
.fb-mark.k-ghost { background: transparent; border: 2px solid var(--deg-1); opacity: .3; }
.fb-mark.k-selected { background: color-mix(in srgb, var(--brass) 30%, transparent); box-shadow: 0 0 0 3px var(--brass-ink), 0 2px 4px rgb(0 0 0 / .35); }
.fb-mark.pulse { animation: mpulse 900ms ease-in-out 3; }
@keyframes mpulse { 50% { transform: scale(1.18); box-shadow: 0 0 0 6px rgb(124 198 138 / .35); } }
.fifths { position: absolute; inset: 0; z-index: 4; pointer-events: none; }

/* feedback sheet */
.fbk-wrap { position: absolute; inset-inline: 0; bottom: 0; z-index: 5; transform: translateY(100%); transition: transform 200ms ease-out; max-height: 78%; display: flex; }
.fbk-wrap.open { transform: translateY(0); }
.fbk { width: 100%; overflow-y: auto; padding: 16px 16px calc(16px + env(safe-area-inset-bottom)); border-radius: 20px 20px 0 0; display: flex; flex-direction: column; gap: 10px; box-shadow: 0 -6px 24px rgb(0 0 0 / .14); }
.fbk.ok { background: var(--success-tint); }
.fbk.bad { background: var(--error-tint); }
.fbk-top { display: flex; align-items: center; gap: 10px; }
.fbk-icon { width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; color: var(--on-status); flex-shrink: 0; }
.fbk.ok .fbk-icon { background: var(--success); }
.fbk.bad .fbk-icon { background: var(--error); }
.fbk-title { font-size: var(--fs-24); font-weight: 800; flex: 1; }
.fbk.ok .fbk-title { color: var(--success); }
.fbk.bad .fbk-title { color: var(--error); }
.fbk-xp { font-family: var(--font-ui); font-weight: 800; color: var(--brass-ink); }
.fbk-answer { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-17); }
.fbk-chosen { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); color: var(--error); }
.fbk-hint { font-weight: 600; }
.fbk-explain { color: var(--ink); }
.fbk-heard { font-size: var(--fs-15); color: var(--ink-2); }
.fbk-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.fbk .ts { background: var(--overlay); }
.ladders { display: flex; flex-direction: column; gap: 8px; }
.ladder-wrap { background: var(--overlay); border-radius: 12px; padding: 8px 12px; }
.ladder { display: flex; align-items: flex-end; gap: 6px; flex-wrap: wrap; justify-content: center; font-family: var(--font-ui); }
.ladder-note { font-weight: 800; font-size: var(--fs-20); }
.ladder-step { display: inline-flex; flex-direction: column; align-items: center; color: var(--ink-2); font-size: var(--fs-15); line-height: 1; padding-bottom: 4px; }
.ladder-step small { font-size: 11px; font-weight: 700; color: var(--brass-ink); }
.ladder-total { text-align: center; font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-15); margin-top: 2px; color: var(--success); }
.ladder.bad .ladder-note { color: var(--error); }
.ladder-total.bad { color: var(--error); }
.inv-line { display: flex; gap: 12px; align-items: center; font-size: var(--fs-20); }
.inv-q { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-15); color: var(--ink-2); }
.deg-strip { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.deg-cell { display: flex; flex-direction: column; align-items: center; padding: 6px 0; border-radius: 10px; background: var(--overlay); font-family: var(--font-ui); min-width: 0; }
.deg-cell b { font-size: var(--fs-15); font-weight: 700; white-space: nowrap; }
.deg-cell small { font-size: var(--fs-13); color: var(--ink-2); font-weight: 700; }
.deg-cell.asked { box-shadow: inset 0 0 0 2px var(--brass-ink); background: var(--surface); }

/* completion */
.done { padding: 24px 16px 40px; max-width: 560px; margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 14px; text-align: center; }
.done-badge { font-size: 3.5rem; }
.done-title { font-size: var(--fs-30); font-weight: 800; outline: none; }
.done-xp { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-48); color: var(--brass-ink); font-variant-numeric: tabular-nums; }
.done-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; width: 100%; }
.stat { background: var(--surface); border-radius: 16px; padding: 12px 6px; box-shadow: var(--card-shadow); border: 1px solid var(--card-border); }
.stat-v { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-20); font-variant-numeric: tabular-nums; white-space: nowrap; }
.stat-l { color: var(--ink-2); font-size: var(--fs-13); font-family: var(--font-ui); font-weight: 600; }
.done-streak { font-family: var(--font-ui); font-weight: 700; color: var(--brass-ink); font-size: var(--fs-20); }
.flame { display: inline-block; animation: flame 900ms ease-in-out 3; }
@keyframes flame { 50% { transform: scale(1.3) rotate(-8deg); } }
.done-sec { width: 100%; }
.done-sec h2 { font-size: var(--fs-17); color: var(--ink-2); margin-bottom: 8px; }
.done-rings { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.mini-ring { display: flex; flex-direction: column; align-items: center; gap: 4px; width: 96px; }
.mini-ring-l { font-size: var(--fs-13); font-family: var(--font-ui); font-weight: 600; line-height: 1.25; }
.mini-ring-d { font-size: var(--fs-13); color: var(--success); font-family: var(--font-ui); font-weight: 700; }
/* daily-goal celebration */
.goal-ring { margin-top: 8px; }
.goal-ring-c { position: relative; font-size: 3rem; line-height: 1; }
.goal-done-sub { color: var(--ink-2); font-family: var(--font-ui); font-weight: 600; }
.goal-streak { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-20); color: var(--brass-ink); }
.goal-streak .flame { font-size: 2rem; }
.goal-streak-n { font-size: var(--fs-40); font-weight: 800; font-variant-numeric: tabular-nums; }
.done-tomorrow { color: var(--ink-2); }
.done .btn-col { width: 100%; }
.confetti { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 6; }
.confetti i { position: absolute; top: -12px; width: 8px; height: 14px; border-radius: 2px; animation: fall 1.2s cubic-bezier(.3,.6,.4,1) forwards; }
@keyframes fall { to { transform: translate(var(--dx), 70vh) rotate(var(--rot)); opacity: 0; } }
/* learn card (teach before test) */
.learn { display: flex; flex-direction: column; gap: 16px; }
.learn-concept { font-size: var(--fs-17); line-height: 1.75; background: var(--surface); border-radius: var(--r-card); padding: 16px; box-shadow: var(--card-shadow); border: 1px solid var(--card-border); }
.learn-table { margin: 0; background: var(--surface); border-radius: var(--r-card); padding: 12px; box-shadow: var(--card-shadow); border: 1px solid var(--card-border); }
.lt-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; }
.lt-col { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 6px 0; border-radius: 10px; background: var(--surface-2); min-width: 0; }
.lt-deg { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-17); color: var(--ink-2); line-height: 1; }
.lt-chord { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-15); white-space: nowrap; }
.lt-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); color: var(--ink-2); }
.lt-key { margin-inline-start: auto; }
.empty { padding: 40px 16px; text-align: center; display: flex; flex-direction: column; gap: 16px; align-items: center; }

/* ---------- notes ---------- */
.notes { max-width: 760px; }
.notes-head { padding: 8px 0 16px; }
.notes-meta { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); color: var(--ink-2); }
.notes-title { font-size: var(--fs-30); font-weight: 800; margin: 4px 0 10px; }
.notes-gist { font-size: var(--fs-17); line-height: 1.75; color: var(--ink); }
.quote-card { margin: 16px 0 0; padding: 14px 16px; border-inline-start: 4px solid var(--brass); background: var(--surface); border-radius: 0 16px 16px 0; box-shadow: var(--card-shadow); }
.quote-card figcaption { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-13); color: var(--brass-ink); margin-bottom: 4px; }
.quote-card blockquote { margin: 0 0 6px; font-size: var(--fs-17); line-height: 1.7; font-style: italic; }
.quote-card.paraphrase blockquote { font-style: normal; }
.notes-sec { margin: 8px 0 20px; }
.sec-h { font-size: var(--fs-20); font-weight: 700; margin-bottom: 10px; }
.unit-card { background: var(--surface); border-radius: var(--r-card); padding: 20px; margin-bottom: 16px; box-shadow: var(--card-shadow); border: 1px solid var(--card-border); scroll-margin-top: 72px; }
.unit-card-head { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 10px; margin-bottom: 12px; }
.uc-icon { font-size: 1.75rem; }
.uc-title { font-size: 1.375rem; font-weight: 700; flex: 1; min-width: 60%; }
.uc-meta { display: flex; gap: 8px; align-items: center; }
.read-pill { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); color: var(--success); background: var(--success-tint); padding: 1px 10px; border-radius: 999px; }
.reading { font-size: 1.125rem; line-height: 1.75; max-width: 68ch; }
.reading p { margin: 0 0 12px; }
.reading ul { margin: 0 0 12px; padding-inline-start: 22px; }
.reading li { margin-bottom: 8px; }
.reading li::marker { color: var(--brass-strong); }
.reading ul ul { margin-top: 6px; }
.reading strong { font-weight: 700; }
.md-h { font-size: var(--fs-17); margin: 16px 0 8px; color: var(--brass-ink); }
.uc-foot { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.sentinel { height: 1px; }
.table-scroll { overflow-x: auto; max-width: 100%; margin: 4px 0 16px; border-radius: 12px; border: 1px solid var(--line); background: linear-gradient(to left, var(--surface) 30%, transparent), linear-gradient(to left, transparent, var(--surface) 70%) 0 100%, radial-gradient(farthest-side at 0 50%, rgb(0 0 0 / .14), transparent), radial-gradient(farthest-side at 100% 50%, rgb(0 0 0 / .14), transparent) 100% 0; background-repeat: no-repeat; background-size: 40px 100%, 40px 100%, 12px 100%, 12px 100%; background-attachment: local, local, scroll, scroll; }
.md-table { border-collapse: separate; border-spacing: 0; font-size: var(--fs-15); line-height: 1.5; min-width: 100%; }
.md-table th, .md-table td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: start; vertical-align: top; }
.md-table thead th { background: var(--surface-2); font-family: var(--font-ui); font-weight: 700; white-space: nowrap; }
.md-table tbody th { position: sticky; right: 0; background: var(--surface); font-weight: 600; z-index: 1; }
.md-table tr:last-child th, .md-table tr:last-child td { border-bottom: 0; }
.chord-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; min-width: 44px; padding: 0 8px; margin: 2px; border-radius: 8px; border: 1.5px solid var(--line); background: var(--surface-2); font-family: var(--font-ui); font-weight: 700; color: var(--ink); }
.chord-btn.pressed { background: var(--brass); color: var(--on-brass); }
.appendix .uc-title { margin-bottom: 8px; }
.notes-foot { color: var(--ink-2); font-size: var(--fs-15); padding: 8px 4px 24px; line-height: 1.7; }
.lesson-list { display: flex; flex-direction: column; gap: 16px; }
.lesson-card { display: block; padding: 20px; text-decoration: none; }
.lesson-card > * { position: relative; z-index: 1; }

/* ---------- ask ---------- */
.ask { display: flex; flex-direction: column; gap: 16px; }
.ask-sec h3 { font-size: var(--fs-15); color: var(--brass-ink); margin-bottom: 6px; }
.ask .quote-card { margin: 0; }
.ask .reading { font-size: var(--fs-17); }
.faq-row { display: flex; flex-wrap: wrap; gap: 8px; }
.faq-chip { text-align: start; height: auto; padding: 8px 14px; line-height: 1.4; }
.chat { display: flex; flex-direction: column; gap: 10px; }
.chat:empty { display: none; }
.bubble { max-width: 88%; padding: 10px 14px; border-radius: 16px; font-size: var(--fs-15); line-height: 1.6; }
.bubble p { margin: 0 0 6px; }
.bubble p:last-child { margin: 0; }
.bubble.user { align-self: flex-end; background: var(--surface-2); border-end-start-radius: 4px; }
.bubble.guide { align-self: flex-start; background: var(--surface); border-inline-start: 3px solid var(--line); box-shadow: var(--card-shadow); border-start-start-radius: 4px; }
.bubble-who { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-13); color: var(--ink-2); margin-bottom: 2px; }
.bubble-extra { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.composer { display: flex; gap: 8px; align-items: flex-end; position: sticky; bottom: -20px; z-index: 10; background: var(--surface); padding: 8px 0 4px; box-shadow: 0 -8px 12px -8px rgb(0 0 0 / .18); }
.composer-input { flex: 1; min-height: 48px; max-height: 140px; resize: none; padding: 12px 14px; border-radius: 14px; border: 2px solid var(--line); background: var(--bg); line-height: 1.4; }
.composer-input:focus { outline: none; border-color: var(--brass-ink); }
.composer-input::placeholder { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.send-btn { width: 48px; height: 48px; border-radius: 50%; border: 0; background: var(--brass); color: var(--on-brass); display: grid; place-items: center; flex-shrink: 0; }
.fb-holder.mini .fb { max-width: 320px; }

/* ---------- homework + questions ---------- */
.hw-group { margin-bottom: 16px; }
.hw-group h3 { font-size: var(--fs-17); margin-bottom: 8px; color: var(--brass-ink); }
.hw-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.hw-item { background: var(--bg); border-radius: 14px; padding: 12px 14px; display: flex; flex-direction: column; gap: 8px; border: 1px solid var(--line); }
.hw-item.locked { opacity: .75; }
.hw-text { line-height: 1.6; }
.hw-note { color: var(--ink-2); font-size: var(--fs-13); font-family: var(--font-ui); font-weight: 600; }
.hw-meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.hw-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; justify-content: space-between; }
.hw-check, .q-check { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); cursor: pointer; }
.hw-check input, .q-check input { width: 22px; height: 22px; accent-color: var(--success); }
.hw-lock { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); font-family: var(--font-ui); font-weight: 600; }
.hw-dots { display: flex; gap: 4px; }
.hw-dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--track); }
.hw-dots i.on { background: var(--success); }
.q-list { list-style: none; padding: 0; margin: 0 0 12px; display: flex; flex-direction: column; gap: 10px; }
.q-item { background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; display: flex; flex-direction: column; gap: 4px; }
.q-item.asked .q-text { color: var(--ink-2); text-decoration: line-through; text-decoration-color: var(--success); }
.q-text { line-height: 1.6; outline: none; }
.q-text[contenteditable]:focus { background: var(--surface); border-radius: 6px; box-shadow: 0 0 0 2px var(--brass-ink); }
.q-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.q-add { display: flex; gap: 8px; margin-bottom: 12px; }
.q-add .text-input { flex: 1; min-width: 0; }

/* ---------- tools ---------- */
.tool-grid { display: flex; flex-direction: column; gap: 12px; }
.tool-card { display: flex; align-items: center; gap: 14px; padding: 16px; border-radius: var(--r-card); background: var(--surface); text-decoration: none; color: var(--ink); box-shadow: var(--card-shadow); border: 1px solid var(--card-border); }
.tool-icon { font-size: 2rem; width: 52px; height: 52px; display: grid; place-items: center; background: var(--surface-2); border-radius: 16px; flex-shrink: 0; }
.tool-text { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.tool-text b { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-17); }
.tool-text small { color: var(--ink-2); font-size: var(--fs-15); line-height: 1.4; }
.tool-ts { flex-shrink: 0; }
.tip { margin-top: 16px; text-align: center; }
.tool-page { display: flex; flex-direction: column; gap: 16px; }
.tool-sec { display: flex; flex-direction: column; gap: 8px; }
.tool-sec h3 { font-size: var(--fs-15); color: var(--ink-2); font-weight: 600; }
.tool-sec.col { gap: 4px; }
.tool-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.lbl { font-family: var(--font-ui); font-weight: 600; color: var(--ink-2); }
.keys .chip-btn { min-width: 52px; justify-content: center; }
.metro { display: flex; flex-direction: column; gap: 16px; align-items: stretch; }
.metro-dots { display: flex; justify-content: center; gap: 14px; padding: 8px; }
.metro-dots i { width: 18px; height: 18px; border-radius: 50%; background: var(--track); transition: transform 80ms, background 80ms; }
.metro-dots i.on { background: var(--ink-2); transform: scale(1.3); }
.metro-dots i.one.on { background: var(--brass-strong); }
.metro-dots.small i { width: 12px; height: 12px; }
.bpm-ctl { display: flex; flex-direction: column; gap: 8px; }
.bpm-row { display: flex; align-items: center; justify-content: center; gap: 20px; }
.bpm-box { display: flex; flex-direction: column; align-items: center; min-width: 120px; }
.bpm-num { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-48); line-height: 1; font-variant-numeric: tabular-nums; }
.bpm-box small { font-family: var(--font-ui); color: var(--ink-2); font-weight: 600; }
.player-stage { background: var(--surface); border-radius: var(--r-card); padding: 16px; display: flex; flex-direction: column; align-items: center; gap: 6px; box-shadow: var(--card-shadow); border: 1px solid var(--card-border); }
.big-wrap { display: flex; flex-direction: column; align-items: center; }
.big-deg { font-family: var(--font-ui); font-weight: 800; font-size: 7.5rem; line-height: 1; color: var(--brass-ink); font-variant-numeric: tabular-nums; min-height: 1em; }
.big-name { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-24); min-height: 1.3em; direction: ltr; }
.big-next { color: var(--ink-2); opacity: .7; font-family: var(--font-ui); font-weight: 600; }
.prog-seq { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-top: 6px; }
.seq-cell { min-width: 52px; padding: 6px 8px; border-radius: 12px; background: var(--surface-2); display: flex; flex-direction: column; align-items: center; font-family: var(--font-ui); }
.seq-cell b { font-size: var(--fs-20); font-weight: 800; }
.seq-cell small { color: var(--ink-2); font-weight: 600; }
.seq-cell.on { background: var(--brass); color: var(--on-brass); }
.seq-cell.on small { color: var(--on-brass); }
.explorer .fb-v { max-width: 380px; }

/* drill */
.drill-intro { display: flex; flex-direction: column; gap: 14px; }
.drill-hero { font-size: 3rem; text-align: center; }
.drill-h { font-size: var(--fs-24); font-weight: 800; text-align: center; }
.drill-best { font-family: var(--font-ui); font-weight: 700; color: var(--brass-ink); text-align: center; }
.drill-stage { display: flex; flex-direction: column; align-items: center; gap: 0; position: sticky; top: calc(var(--topbar-h) + env(safe-area-inset-top)); background: var(--bg); z-index: 6; padding: 4px 0 8px; }
.drill-prog { font-family: var(--font-ui); font-weight: 600; color: var(--ink-2); font-size: var(--fs-13); }
.drill-deg { font-family: var(--font-ui); font-weight: 800; font-size: 4.5rem; line-height: 1; color: var(--brass-ink); }
.drill-word { font-family: var(--font-ui); font-weight: 600; color: var(--ink-2); }
.drill-result { display: flex; flex-direction: column; gap: 12px; align-items: stretch; text-align: center; }
.drill-avg { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-48); color: var(--brass-ink); }
.drill-avg small { font-size: var(--fs-17); color: var(--ink-2); font-weight: 600; }
.drill-verdict { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-20); color: var(--error); }
.drill-verdict.ok { color: var(--success); }
.bars { display: grid; grid-template-columns: repeat(6, 1fr); gap: 10px; height: 180px; padding: 0 8px; }
.bar-col { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.bar-val { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); color: var(--ink-2); }
.bar-track { flex: 1; width: 100%; max-width: 36px; display: flex; align-items: flex-end; background: var(--surface-2); border-radius: 8px; overflow: hidden; position: relative; }
.bar { width: 100%; background: var(--error); border-radius: 8px 8px 0 0; }
.bar.ok { background: var(--success); }
.bar-goal { position: absolute; inset-inline: 0; border-top: 2px dashed var(--ink-2); opacity: .7; }
.bar-lab { font-family: var(--font-ui); font-weight: 800; }

/* songbook */
.sb-head { display: flex; flex-direction: column; gap: 10px; }
.song-list { display: flex; flex-direction: column; gap: 10px; }
.song-card { text-align: start; padding: 14px 16px; border-radius: 16px; border: 2px solid var(--line); background: var(--surface); display: flex; flex-direction: column; gap: 2px; }
.song-card b { font-family: var(--font-ui); font-size: var(--fs-17); }
.song-card small { color: var(--ink-2); }
.sb-bar { display: flex; justify-content: space-between; }
.title-input { font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-20); }
.sections { display: flex; flex-direction: column; gap: 10px; }
.sec-card { padding: 12px; border-radius: 16px; background: var(--surface); border: 2px solid var(--line); display: flex; flex-direction: column; gap: 10px; }
.sec-card.active { border-color: var(--brass-ink); }
.sec-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sec-name { min-height: 44px; border-radius: 10px; border: 2px solid var(--line); background: var(--surface-2); padding: 0 8px; font-family: var(--font-ui); font-weight: 700; }
.sec-top .seg { flex: 1; min-width: 0; }
.sec-chords, .decode-out { display: flex; flex-wrap: wrap; gap: 6px; }
.deg-chip { min-width: 48px; padding: 4px 10px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface-2); display: inline-flex; flex-direction: column; align-items: center; font-family: var(--font-ui); line-height: 1.2; }
.deg-chip b { font-size: var(--fs-20); font-weight: 800; }
.deg-chip small { color: var(--ink-2); font-weight: 600; }
.deg-chip.out { border-style: dashed; opacity: .7; }
.sb-actions { display: flex; justify-content: space-between; gap: 8px; }
.now-playing { min-height: 28px; text-align: center; font-family: var(--font-ui); }
.now-playing b { font-size: var(--fs-24); color: var(--brass-ink); }
.pad-dock { position: sticky; bottom: calc(var(--tabbar-h) * 0); background: var(--bg); padding: 8px 0 calc(8px + env(safe-area-inset-bottom)); display: flex; flex-direction: column; gap: 8px; border-top: 1px solid var(--line); }
.keypad { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.key-btn { min-height: 56px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface); box-shadow: 0 3px 0 var(--line); display: flex; flex-direction: column; align-items: center; justify-content: center; font-family: var(--font-ui); padding: 2px; min-width: 0; }
.key-btn:active { transform: translateY(3px); box-shadow: none; }
.key-btn b { font-size: var(--fs-20); font-weight: 800; }
.key-btn small { font-size: 11px; color: var(--ink-2); font-weight: 600; white-space: nowrap; overflow: hidden; max-width: 100%; }

/* ---------- me ---------- */
.me { display: flex; flex-direction: column; gap: 16px; }
.me-top { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 560px) { .me-top { grid-template-columns: 1fr 1fr; } }
.goal-card { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.goal-center { position: absolute; display: flex; flex-direction: column; align-items: center; }
.goal-center b { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-40); line-height: 1; font-variant-numeric: tabular-nums; }
.goal-center small { color: var(--ink-2); font-family: var(--font-ui); font-weight: 600; }
.goal-line { font-family: var(--font-ui); font-weight: 600; }
.streak-card { display: flex; flex-direction: column; justify-content: center; gap: 6px; }
.streak-big { font-family: var(--font-ui); font-weight: 800; font-size: var(--fs-40); line-height: 1.1; }
.streak-big small { font-size: var(--fs-17); color: var(--ink-2); }
.me-sec h2 { font-size: var(--fs-17); margin-bottom: 12px; }
.cal { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 6px; }
.cal-h { text-align: center; font-family: var(--font-ui); font-weight: 700; font-size: var(--fs-13); color: var(--ink-2); }
.cal-d { aspect-ratio: 1; border-radius: 10px; background: var(--surface-2); display: grid; place-items: center; font-family: var(--font-ui); font-size: var(--fs-13); color: var(--ink-2); max-height: 44px; }
.cal-d.met { background: var(--brass); color: var(--on-brass); font-weight: 700; }
.cal-d.today { box-shadow: inset 0 0 0 2px var(--brass-ink); }
.cal-d.future { opacity: .4; }
.cal-d.m-alt:not(.met) { background: transparent; box-shadow: inset 0 0 0 1px var(--line); }
.cal-d.first { font-weight: 800; color: var(--ink); display: flex; flex-direction: column; justify-content: center; align-items: center; line-height: 1.05; }
.cal-d.first small { font-size: 10px; font-weight: 600; color: var(--ink-2); }
.cal-d.met.first small { color: inherit; }
.cal-cap { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-15); margin: -6px 0 10px; }
.skills-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px 8px; }
@media (max-width: 359px) { .skills-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.skill-cell { border: 0; background: transparent; display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 4px; border-radius: 14px; min-width: 0; }
.skill-cell:hover { background: var(--surface-2); }
.skill-name { font-family: var(--font-ui); font-weight: 600; font-size: var(--fs-13); line-height: 1.3; text-align: center; }
.skill-pop { display: flex; flex-direction: column; align-items: center; gap: 12px; text-align: center; }
.drill-bests { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.drill-bests .stat { min-width: 90px; text-align: center; }
.settings { display: flex; flex-direction: column; }
.set-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.set-row:last-of-type { border-bottom: 0; }
.set-l { display: flex; flex-direction: column; font-family: var(--font-ui); font-weight: 600; }
.set-l small { color: var(--ink-2); font-weight: 500; font-family: var(--font-body); }
.set-row .slider { max-width: 220px; }

/* dev */
.dev-pre { white-space: pre-wrap; word-break: break-word; background: var(--surface); padding: 12px; border-radius: 12px; font-size: 12px; line-height: 1.5; font-family: ui-monospace, Menlo, monospace; direction: ltr; text-align: left; }
.dev-pre.bad { color: var(--error); }

@media (min-width: 720px) {
  .page { padding: 24px; }
  .tool-grid { display: grid; grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .node-recommended::before, .node-bubble { animation: none; }
}

.fbk .q-row { vertical-align: middle; margin-inline-start: 4px; }
.fbk .q-chip { width: 24px; height: 24px; font-size: 14px; }