/* Local practice framing; notation retains its size inside a continuous scroller. */
.scale-build { --ink:#1f2933; --muted:#52616b; --line:#d7d9d7; --gold:#8a6d2f; color:var(--ink); font:17px/1.5 system-ui,-apple-system,sans-serif; max-width:720px; padding:24px 18px 60px; margin:auto; box-sizing:border-box; }
.scale-build * { box-sizing:border-box; }
.scale-build a { color:#21465d; text-underline-offset:3px; }
.scale-build .return-links,.scale-build nav { font-size:14px; }
.scale-build nav { margin-top:18px; padding-top:12px; border-top:1px solid var(--line); line-height:1.8; }
.scale-build .practice-card { margin:20px auto 0; max-width:620px; border:1px solid var(--line); border-top:3px solid var(--gold); border-radius:12px; background:#fff; padding:20px; }
.scale-build h1 { font:700 1.55rem/1.2 system-ui,-apple-system,sans-serif; letter-spacing:0; text-transform:none; margin:0; }
.scale-build h2 { font:650 1.2rem/1.3 system-ui,-apple-system,sans-serif; color:var(--ink); letter-spacing:0; text-transform:none; margin:0; }
.scale-build .title-row { display:flex; align-items:baseline; gap:12px; flex-wrap:wrap; }
.scale-build .practice-label,.scale-build #progress { color:var(--gold); font-size:.75rem; font-weight:750; letter-spacing:.07em; text-transform:uppercase; }
.scale-build #progress { margin:20px 0 4px; }
.scale-build .task { text-align:center; }
.scale-build .task > p { font-size:.9rem; color:var(--muted); margin:6px 0 0; }
.scale-build #score-scroll { overflow-x:auto; overscroll-behavior-x:contain; margin:0 auto; max-width:560px; }
.scale-build .clef-control { max-width:560px; margin:auto; height:44px; }
.scale-build #build-clef { font:16px system-ui,-apple-system,sans-serif; color:var(--ink); background:#fff; border:1px solid #abb5b9; border-radius:8px; width:96px; min-height:44px; padding:6px 8px; }
.scale-build .score-canvas { position:relative; width:560px; height:238px; padding-bottom:6px; }
.scale-build #notation svg { width:560px; height:232px; display:block; max-width:none; }
.scale-build .music-glyph { font-family:Bravura; font-size:38px; fill:currentColor; }
.scale-build .staff-line { stroke:currentColor; stroke-width:1; }
.scale-build .degree,.scale-build .pitch-label { font:14px system-ui,-apple-system,sans-serif; fill:currentColor; }
.scale-build .degree-caret { font:12px system-ui,-apple-system,sans-serif; fill:currentColor; }
.scale-build .build-note { cursor:pointer; outline:none; }
.scale-build .selection-line { stroke:var(--gold); stroke-width:2; opacity:0; }
.scale-build .selected .selection-line { opacity:1; }
.scale-build .sounding .notehead { fill:#a46718; }
.scale-build .build-note:focus-visible .note-hit { stroke:#21465d; stroke-width:2; rx:5; }
.scale-build #accidentals { position:absolute; top:183px; display:flex; gap:4px; width:140px; }
.scale-build button { font:inherit; color:var(--ink); background:#fff; border:1px solid #abb5b9; border-radius:8px; min-height:44px; padding:7px 12px; cursor:pointer; }
.scale-build #accidentals button { width:44px; padding:4px; font-size:22px; line-height:1; }
.scale-build #accidentals button[aria-pressed=true] { border-color:#21465d; background:#edf3f5; }
.scale-build button:disabled { opacity:.45; cursor:default; }
.scale-build :is(button,a,summary,select):focus-visible { outline:2px solid #21465d; outline-offset:3px; }
.scale-build #selection { text-align:center; font-size:.85rem; color:var(--muted); margin:4px 0 8px; min-height:1.5em; }
.scale-build .sound-row { display:flex; flex-wrap:wrap; align-items:center; justify-content:center; gap:8px; min-height:44px; }
.scale-build #sound-status { font-size:.8rem; color:var(--muted); }
.scale-build #sound-status:empty { display:none; }
.scale-build #feedback { min-height:5em; font-size:.9rem; line-height:1.45; text-align:center; padding:12px 0 4px; }
.scale-build #feedback.correct { color:#1d654b; }
.scale-build .practice-actions { display:flex; justify-content:center; align-items:baseline; gap:20px; flex-wrap:wrap; }
.scale-build #check { min-width:100px; background:#21465d; color:#fff; border-color:#21465d; }
.scale-build details { font-size:.85rem; }
.scale-build summary { cursor:pointer; min-height:44px; padding:10px 0; font-weight:600; }
.scale-build details[open] { flex-basis:100%; }
.scale-build details p { margin:8px 0; }
.scale-build .help-actions { display:flex; flex-wrap:wrap; gap:8px; }
.scale-build .help-actions button { font-size:.85rem; }
@media(max-width:440px) { .scale-build { padding:18px 12px 40px; } .scale-build .practice-card { padding:14px; } .scale-build #feedback { min-height:7em; } }