:root{--bg: #f4f5f8;--panel: #ffffff;--bar: #1f2330;--bar-ink: #f3f4f8;--ink: #1f2330;--muted: #6b7280;--border: #e4e4ee;--accent: #6366f1;--hit: #16a34a;--wrong: #dc2626;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg)}.app{display:flex;flex-direction:column;height:100vh}.topbar{position:relative;flex:0 0 auto;background:var(--bar);color:var(--bar-ink);z-index:10;box-shadow:0 1px 6px #0000002e}.topbar-main{display:flex;align-items:center;gap:16px;height:52px;padding:0 14px}.brand{font-weight:700;font-size:15px;white-space:nowrap}.topbar-right{margin-left:auto;display:flex;align-items:center;gap:10px}.compact-status{display:flex;align-items:center;gap:10px;min-width:0;font-size:14px}.compact-status.muted{color:#9aa1b2}.compact-status.done{color:#6ee7a8;font-weight:600}.cs-label{color:#9aa1b2;font-size:12px;text-transform:uppercase;letter-spacing:.04em}.cs-notes{font-weight:700;font-variant-numeric:tabular-nums}.cs-flag{font-weight:600;font-size:13px}.cs-flag.hit{color:#6ee7a8}.cs-flag.wrong{color:#fca5a5}.cs-progress{width:120px;height:6px;background:#ffffff29;border-radius:999px;overflow:hidden}.cs-progress-bar{display:block;height:100%;background:var(--accent);transition:width .15s ease}.cs-count{font-size:13px;color:#c7cbd6;font-variant-numeric:tabular-nums}.hand-toggle{display:inline-flex;gap:4px}.hand-btn{display:inline-flex;align-items:center;gap:4px;padding:5px 9px;border-radius:8px;font-size:13px;font-weight:600;line-height:1;border:1px solid var(--border);background:#fff;color:var(--ink);cursor:pointer}.hand-btn--on{background:var(--accent);border-color:var(--accent);color:#fff}.hand-btn:disabled{opacity:.45;cursor:not-allowed}.hand-toggle--compact .hand-btn{padding:4px 8px;background:#ffffff14;border-color:#ffffff29;color:var(--bar-ink)}.hand-toggle--compact .hand-btn--on{background:var(--accent);border-color:var(--accent);color:#fff}.score-area--selecting{cursor:crosshair;-webkit-user-select:none;user-select:none}.score-area--selecting .osmd-container{cursor:crosshair}.osmd-wrap{position:relative;width:100%}.loop-highlight{position:absolute;background:#6366f129;border:1px solid rgba(99,102,241,.4);border-radius:6px;pointer-events:none;z-index:2}.loop-handle{position:absolute;width:10px;min-height:18px;background:var(--accent);border:1px solid #fff;border-radius:5px;cursor:ew-resize;z-index:4;opacity:.9;box-shadow:0 1px 4px #00000040}.loop-handle:hover{opacity:1;transform:scaleX(1.15)}.select-banner{position:sticky;top:0;z-index:5;margin:-4px auto 12px;width:fit-content;padding:7px 14px;border-radius:999px;background:var(--accent);color:#fff;font-size:13px;font-weight:600;box-shadow:0 4px 12px #00000026;pointer-events:none}.chip{font-size:12px;font-weight:600;padding:4px 9px;border-radius:999px;background:#ffffff1f;color:var(--bar-ink);white-space:nowrap}.chip--loop{background:#6366f152;border:1px solid var(--accent)}.metro-quick{display:inline-flex;align-items:center;gap:7px;font:inherit;font-size:13px;color:var(--bar-ink);background:#ffffff14;border:1px solid rgba(255,255,255,.16);border-radius:8px;padding:5px 10px;cursor:pointer}.metro-quick:hover{background:#ffffff24}.metro-dot{width:8px;height:8px;border-radius:50%;background:#6b7280}.metro-quick--on{background:#6366f147;border-color:var(--accent)}.metro-quick--on .metro-dot{background:#6ee7a8;animation:pulse .6s ease-in-out infinite alternate}@keyframes pulse{0%{opacity:.35;transform:scale(.85)}to{opacity:1;transform:scale(1.15)}}.midi-dot{width:10px;height:10px;border-radius:50%;background:#6b7280}.midi-dot--ready{background:#6ee7a8}.midi-dot--error,.midi-dot--unsupported{background:#fca5a5}.midi-dot--requesting{background:#fcd34d}.expand-btn{font:inherit;font-size:13px;color:var(--bar-ink);background:var(--accent);border:none;border-radius:8px;padding:6px 12px;cursor:pointer;white-space:nowrap}.expand-btn:hover{filter:brightness(1.08)}.topbar-panel{position:absolute;top:52px;left:0;right:0;background:var(--panel);color:var(--ink);border-bottom:1px solid var(--border);box-shadow:0 10px 24px #00000029;padding:16px 18px;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px 28px}.panel-group h3{margin:0 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.score-area{flex:1 1 auto;overflow:auto;background:var(--panel);padding:20px 24px}.osmd-container{width:100%}.placeholder{color:var(--muted);max-width:460px;margin:8vh auto 0;text-align:center}.placeholder-hint{font-size:14px}.row{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:8px}.row:last-child{margin-bottom:0}button,.file-btn{font:inherit;padding:6px 12px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--ink);cursor:pointer;transition:background .12s,border-color .12s}button:hover:not(:disabled),.file-btn:hover{border-color:var(--accent)}button:disabled{opacity:.45;cursor:not-allowed}.file-btn{display:inline-block}select,input[type=number]{font:inherit;padding:5px 8px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--ink)}.status{font-size:13px;font-weight:600;padding:3px 8px;border-radius:999px;background:#eef;color:var(--muted)}.status--ready{background:#e7f7ee;color:var(--hit)}.status--error,.status--unsupported{background:#fdecec;color:var(--wrong)}.hint{font-size:12px;color:var(--muted);margin:4px 0 0}.error{color:var(--wrong);font-size:13px}.tempo .bpm-input{width:68px}.tempo .unit{font-size:13px;color:var(--muted)}.bpm-range{width:100%;margin:6px 0 10px;accent-color:var(--accent)}.metro-btn{font-weight:600}.metro-btn--on{background:var(--accent);color:#fff;border-color:var(--accent)}