:root{color-scheme:dark;--bg: #0d1117;--panel: #161b22;--border: #30363d;--accent: #f78166;--primary: #58a6ff;--text: #e6edf3;--muted: #8b949e}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,sans-serif;background:radial-gradient(ellipse at top,#1a2233 0%,var(--bg) 60%);color:var(--text);min-height:100vh}.app{max-width:720px;margin:0 auto;padding:24px 16px 48px}h1{text-align:center;font-size:1.5rem;letter-spacing:.05em}.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;margin:16px 0}.panel h2{font-size:.95rem;color:var(--muted);margin:0 0 12px;text-transform:uppercase;letter-spacing:.1em}.visualizer{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px;text-align:center}.visualizer.on{box-shadow:0 0 30px #58a6ff26}.pendulum-track{height:90px;position:relative;overflow:hidden}.pendulum{position:absolute;left:50%;bottom:0;width:4px;height:80px;transform-origin:bottom center;transition:transform .2s ease-in-out}.pendulum-arm{position:absolute;left:-3px;top:0;width:10px;height:80px;background:linear-gradient(to top,var(--primary),transparent);border-radius:5px}.beat-dots{display:flex;justify-content:center;gap:12px;margin-top:12px}.dot{width:18px;height:18px;border-radius:50%;background:var(--border);border:none;cursor:pointer;transition:transform .08s,background .08s,box-shadow .08s;padding:0}.dot.accent{background:#6e7681;outline:2px solid var(--accent)}.dot.active{background:var(--primary);transform:scale(1.5);box-shadow:0 0 14px var(--primary)}.dot.accent.active{background:var(--accent);box-shadow:0 0 14px var(--accent)}.bar-counter{margin-top:10px;color:var(--muted);font-variant-numeric:tabular-nums}.bpm-panel{text-align:center}.bpm-display{display:flex;align-items:baseline;justify-content:center;gap:12px}.bpm-value{font-size:4rem;font-weight:700;font-variant-numeric:tabular-nums;animation:pulse .1s}@keyframes pulse{0%{transform:scale(1.06)}to{transform:scale(1)}}.tempo-mark{color:var(--primary);font-style:italic}input[type=range]{width:100%;accent-color:var(--primary);margin:12px 0}.bpm-controls{display:flex;justify-content:center;gap:8px}button{font:inherit;color:var(--text);background:#21262d;border:1px solid var(--border);border-radius:8px;padding:8px 14px;cursor:pointer;transition:background .15s}button:hover{background:#30363d}button.tap{background:var(--primary);color:#000;font-weight:700}button.tap:hover{filter:brightness(1.1)}.presets{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:14px}.preset{display:flex;flex-direction:column;font-size:.75rem;padding:5px 10px}.preset small{color:var(--muted)}.preset.active{border-color:var(--primary);color:var(--primary)}.play-btn{display:block;width:100%;font-size:1.3rem;font-weight:700;padding:16px;background:linear-gradient(135deg,#238636,#2ea043);border:none;border-radius:12px}.play-btn.playing{background:linear-gradient(135deg,#b62324,#da3633)}.hint{text-align:center;color:var(--muted);font-size:.8rem}.row{display:flex;align-items:center;gap:12px;margin:10px 0;flex-wrap:wrap}.row>label{min-width:130px;color:var(--muted);font-size:.9rem}.chip-group{display:flex;flex-wrap:wrap;gap:6px}.chip{padding:6px 12px;font-size:.85rem}.chip.active{border-color:var(--primary);color:var(--primary);background:#58a6ff1a}.slider-row input[type=range]{flex:1;margin:0}.value{min-width:64px;text-align:right;font-variant-numeric:tabular-nums;font-size:.85rem}.preview{padding:4px 8px}footer{text-align:center;color:var(--muted);font-size:.75rem;margin-top:32px}.muted-badge{color:var(--accent);font-weight:600}.ramp-badge{color:#3fb950;font-weight:600}.timer{font-size:1.1rem}.row label input[type=checkbox]{accent-color:var(--primary);vertical-align:middle}.note{color:var(--muted);font-size:.8rem;margin:8px 0 0}.note.error{color:var(--accent)}.bpm-input{font-size:3.2rem;font-weight:700;width:5.5ch;text-align:center;background:transparent;border:none;border-bottom:2px solid var(--border);color:var(--text);font-variant-numeric:tabular-nums}.bpm-input:focus{outline:none;border-color:var(--primary)}.bpm-input::-webkit-inner-spin-button{opacity:1}.a4-input{width:90px;background:#0d1117;border:1px solid var(--border);border-radius:6px;color:var(--text);padding:6px 8px;font:inherit}.tuner-read{font-weight:700;font-size:1.05rem}.tuner-read.in-tune{color:#3fb950}.cents-meter{margin-top:8px}.cents-track{position:relative;height:14px;background:#21262d;border-radius:7px;overflow:hidden}.cents-center{position:absolute;left:50%;top:0;width:2px;height:100%;background:var(--border)}.cents-needle{position:absolute;top:1px;width:10px;height:12px;margin-left:-5px;background:var(--primary);border-radius:5px;transition:left .08s linear}.cents-labels{display:flex;justify-content:space-between;color:var(--muted);font-size:.7rem;margin-top:4px}