:root{--bg: #f7f6f2;--surface: #ffffff;--surface-2: #eceae3;--text: #1b1c1f;--muted: #6c6d72;--accent: #d4901a;--accent-ink: #1b1300;--outline: #b9b6ac;--ok: #2fa84f;--warn: #d9534f;--radius: 14px;color-scheme:light dark}@media (prefers-color-scheme: dark){:root{--bg: #111318;--surface: #1a1d24;--surface-2: #252932;--text: #eef0f4;--muted: #9196a1;--accent: #f2b33d;--accent-ink: #1b1300;--outline: #4a505c}}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:var(--bg);color:var(--text);font:16px/1.4 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-tap-highlight-color:transparent;overscroll-behavior:none}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer}#app{height:100dvh;display:flex;flex-direction:column;max-width:640px;margin:0 auto}.screen{flex:1;display:flex;flex-direction:column;min-height:0;padding:16px;padding-top:max(16px,env(safe-area-inset-top));gap:12px;overflow-y:auto}.brand{font-size:28px;font-weight:800;letter-spacing:-.02em;margin:8px 0 0}.brand span{color:var(--accent)}.tagline{color:var(--muted);margin:0 0 8px}.song-card{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--surface-2);text-align:left;width:100%}.song-card .title{font-weight:700;font-size:18px}.song-card .meta{color:var(--muted);font-size:14px}.song-card .grow{flex:1;min-width:0}.song-card .del{background:none;border:0;color:var(--muted);font-size:20px;padding:4px 8px}a.btn{text-decoration:none;color:inherit;display:inline-block}.btn{border:1px solid var(--outline);background:var(--surface);border-radius:999px;padding:10px 18px;font-weight:600}.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.btn:disabled{opacity:.5}.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}textarea.song-text{width:100%;min-height:50vh;font:15px/1.5 ui-monospace,SF Mono,Menlo,monospace;padding:12px;border-radius:var(--radius);border:1px solid var(--outline);background:var(--surface);resize:vertical}.error{color:var(--warn);font-size:14px;white-space:pre-wrap}.hint{color:var(--muted);font-size:14px}.hint code{background:var(--surface-2);padding:1px 5px;border-radius:4px}.topbar{display:flex;align-items:center;gap:10px;padding:10px 16px;padding-top:max(10px,env(safe-area-inset-top));border-bottom:1px solid var(--surface-2)}.topbar .back-link{background:none;border:0;font-size:22px;padding:0 4px;color:var(--muted)}.topbar .titles{flex:1;min-width:0}.topbar .song-title{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar 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14px;font-size:22px;font-weight:700;min-width:56px;transition:background .15s,transform .15s,border-color .15s}.line.current .pill{font-size:34px;padding:10px 18px}.pill .beats{position:absolute;top:2px;right:5px;font-size:11px;font-weight:600;color:var(--muted)}.pill.played{color:var(--muted)}.pill.next{border-color:var(--accent)}.pill.current{background:var(--accent);color:var(--accent-ink);transform:scale(1.04)}.pill.current .beats{color:var(--accent-ink)}.pill.current:after{content:"";position:absolute;left:10%;bottom:4px;height:3px;border-radius:2px;width:calc(80% * var(--progress, 0));background:color-mix(in srgb,var(--accent-ink) 45%,transparent);transition:width .1s linear}.chart.uncertain .pill.current{background:color-mix(in srgb,var(--accent) 45%,var(--surface-2))}.chart-end{height:1px}.note{font-size:12px;color:var(--muted);padding:0 16px 4px}.note a{color:inherit}.diagrams{display:flex;align-items:flex-end;justify-content:center;gap:18px;padding:6px 16px 0;min-height:120px}.diagram{display:flex;flex-direction:column;align-items:center}.diagram svg{display:block}.diagram .caption{font-size:12px;color:var(--muted)}.diagram.small{opacity:.7}.diagram .noshape{font-size:36px;font-weight:800;padding:20px}.controls{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;padding:10px 16px;padding-bottom:max(12px,env(safe-area-inset-bottom));border-top:1px solid var(--surface-2)}.controls .nav{display:flex;gap:8px}.controls .nav button,.controls .icon{width:48px;height:48px;border-radius:50%;border:1px solid var(--outline);background:var(--surface);font-size:18px}.controls .icon.active{background:var(--surface-2)}.controls .start{height:48px;border-radius:999px;border:0;background:var(--accent);color:var(--accent-ink);font-weight:700;font-size:17px}.controls .start.stop{background:var(--surface-2);color:var(--text)}.controls .sens{grid-column:1 / 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640px){.diagrams{min-height:0}.diagram.small{display:none}}