:root{--bg:#0f0f13;--surface:#1a1a24;--surface2:#24243a;--border:#2d2d44;--text:#e4e4f0;--text-dim:#8888a8;--accent:#6c5ce7;--accent-dark:#4a3db8;--accent-glow:#6c5ce74d;--hover:#a78bfa;--hover-dark:#7c5cbf;--octave:#2eaadc;--octave-dark:#1e7fa8;--octave-glow:#2eaadc4d;--danger:#e74c5c;--white-key:#f5f5f0;--black-key:#1a1a1e;--fretboard:#3d2b1f;--fret-wire:silver;--string-color:#d4d0c8}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow-x:hidden}#app{flex-direction:column;gap:24px;max-width:1200px;margin:0 auto;padding:24px 16px;display:flex}.header{text-align:center;padding:16px 0}.header h1{background:linear-gradient(135deg, var(--accent), var(--hover));-webkit-text-fill-color:transparent;letter-spacing:-.02em;-webkit-background-clip:text;background-clip:text;font-size:2rem;font-weight:700}.header p{color:var(--text-dim);margin-top:6px;font-size:.95rem}.controls{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-wrap:wrap;align-items:center;gap:16px;padding:16px;display:flex}.control-group{align-items:center;gap:8px;display:flex}.control-label{text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);font-size:.8rem;font-weight:600}.toggle-group{background:var(--bg);border:1px solid var(--border);border-radius:8px;display:flex;overflow:hidden}.toggle-btn{color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:8px 16px;font-size:.85rem;font-weight:500;transition:all .2s}.toggle-btn.active{background:var(--accent);color:#fff}.toggle-btn:hover:not(.active){background:var(--surface2);color:var(--text)}.chord-controls{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.note-select{gap:2px;display:flex}.note-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text);cursor:pointer;text-align:center;border-radius:6px;min-width:32px;padding:6px 10px;font-size:.8rem;transition:all .15s}.note-btn.sharp{background:var(--bg);font-size:.75rem}.note-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.note-btn:hover:not(.active){background:var(--hover);color:#fff}.chord-type-select{flex-wrap:wrap;gap:2px;display:flex}.type-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:6px;padding:6px 12px;font-size:.8rem;transition:all .15s}.type-btn.active{background:var(--accent);border-color:var(--accent);color:#fff}.type-btn:hover:not(.active){background:var(--hover);color:#fff}.right-controls{gap:8px;margin-left:auto}.icon-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text-dim);cursor:pointer;border-radius:8px;padding:8px 12px;font-size:.8rem;transition:all .2s}.icon-btn.active{color:var(--accent);border-color:var(--accent)}.icon-btn:hover{background:var(--surface);color:var(--text)}.play-btn{background:var(--accent);border:1px solid var(--accent);color:#fff;cursor:pointer;border-radius:8px;padding:8px 16px;font-size:.85rem;font-weight:600;transition:all .2s}.play-btn:hover:not(:disabled){background:var(--hover);border-color:var(--hover)}.play-btn:disabled{opacity:.4;cursor:not-allowed}.clear-btn{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:8px;padding:8px 16px;font-size:.85rem;transition:all .2s}.clear-btn:hover{border-color:var(--danger);color:var(--danger)}.info-display{width:100%;color:var(--text-dim);min-height:1.5em;padding:8px 0 0;font-size:.9rem}.section{flex-direction:column;gap:8px;display:flex}.section-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-dim);padding-left:4px;font-size:.85rem;font-weight:600}.piano-wrapper{-webkit-overflow-scrolling:touch;padding:8px 0;overflow-x:auto}.piano-keyboard{min-width:fit-content;height:160px;margin:0 auto;display:flex;position:relative}.piano-key{cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:0 0 5px 5px;transition:background .1s;position:relative}.piano-key.white{background:var(--white-key);z-index:1;border:1px solid #ccc;width:44px;height:160px}.piano-key.black{background:var(--black-key);z-index:2;border:1px solid #000;border-radius:0 0 4px 4px;width:28px;height:100px;margin-left:-14px;margin-right:-14px}.piano-key.white:hover{background:#e8e8e0}.piano-key.black:hover{background:#2a2a30}.piano-key.active.white{box-shadow:0 0 16px var(--accent-glow), inset 0 0 8px var(--accent-glow)}.piano-key.active.black{box-shadow:0 0 16px var(--accent-glow)}.piano-key.octave.white{box-shadow:0 0 12px var(--octave-glow), inset 0 0 6px var(--octave-glow)}.piano-key.octave.black{box-shadow:0 0 12px var(--octave-glow)}.piano-key-label{pointer-events:none;font-size:.65rem;font-weight:600;position:absolute;bottom:8px;left:50%;transform:translate(-50%)}.piano-key.white .piano-key-label{color:#666}.piano-key.black .piano-key-label{color:#999}.piano-key.active .piano-key-label,.piano-key.octave .piano-key-label{color:#fff}.guitar-wrapper{-webkit-overflow-scrolling:touch;padding:8px 0;overflow-x:auto}.guitar-fretboard{background:var(--fretboard);border-radius:8px;flex-direction:column;min-width:fit-content;padding:4px 0;display:flex}.guitar-markers{height:24px;padding-left:40px;display:flex}.guitar-marker-cell{justify-content:center;align-items:center;gap:4px;width:64px;min-width:64px;display:flex;position:relative}.guitar-marker-cell.nut-marker{width:40px;min-width:40px}.fret-dot{background:#ffffff40;border-radius:50%;width:8px;height:8px}.fret-number{color:#ffffff59;font-size:.6rem;position:absolute;bottom:-2px}.guitar-string-row{align-items:center;height:36px;display:flex}.guitar-string-label{text-align:center;color:#ffffff80;flex-shrink:0;width:40px;font-size:.7rem;font-weight:600}.guitar-cell{cursor:pointer;border-right:2px solid var(--fret-wire);justify-content:center;align-items:center;width:64px;min-width:64px;height:36px;display:flex;position:relative}.guitar-cell.open-string{background:#00000026;border-right:4px solid #888;width:40px;min-width:40px}.string-line{background:var(--string-color);pointer-events:none;opacity:.6;position:absolute;top:50%;left:0;right:0;transform:translateY(-50%)}.guitar-note-dot{z-index:1;opacity:0;background:var(--surface2);width:28px;height:28px;color:var(--text-dim);border-radius:50%;justify-content:center;align-items:center;font-size:.65rem;font-weight:700;transition:all .15s;display:flex;transform:scale(.5)}.guitar-cell:hover .guitar-note-dot{opacity:.7;background:var(--surface2);color:var(--text);transform:scale(.75)}.composer{background:var(--surface);border:1px solid var(--border);border-radius:12px;flex-direction:column;gap:12px;padding:16px;display:flex}.composer-transport{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.composer-play-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;min-width:70px;padding:8px 20px;font-size:.85rem;font-weight:700;transition:all .2s}.composer-play-btn:hover{background:var(--hover)}.composer-play-btn.playing{background:var(--danger)}.composer-play-btn.playing:hover{background:#c0392b}.composer-loop-btn{background:var(--surface2);border:1px solid var(--border);color:var(--text-dim);cursor:pointer;border-radius:8px;padding:8px 12px;font-size:.8rem;transition:all .2s}.composer-loop-btn.active{color:var(--accent);border-color:var(--accent)}.composer-param{align-items:center;gap:6px;display:flex}.composer-param-label{text-transform:uppercase;letter-spacing:.04em;color:var(--text-dim);font-size:.75rem;font-weight:600}.composer-input{background:var(--bg);border:1px solid var(--border);color:var(--text);text-align:center;border-radius:6px;width:64px;padding:6px 8px;font-size:.85rem}.composer-input:focus{outline:1px solid var(--accent)}.composer-select{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:6px 8px;font-size:.85rem}.composer-select:focus{outline:1px solid var(--accent)}.composer-clear-btn{border:1px solid var(--border);color:var(--text-dim);cursor:pointer;background:0 0;border-radius:8px;margin-left:auto;padding:6px 14px;font-size:.8rem;transition:all .2s}.composer-clear-btn:hover{border-color:var(--danger);color:var(--danger)}.composer-brush{border-top:1px solid var(--border);border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:10px;padding:10px 0;display:flex}.composer-brush-preview{color:var(--accent);margin-left:8px;font-size:.95rem;font-weight:700}.composer-grid-scroll{-webkit-overflow-scrolling:touch;padding-bottom:4px;overflow-x:auto}.composer-grid{min-width:fit-content}.composer-grid-row{gap:0;display:grid}.composer-measure-labels{margin-bottom:2px}.composer-measure-label{color:var(--text-dim);text-align:center;border-bottom:2px solid var(--border);padding:2px 0;font-size:.7rem;font-weight:600}.composer-beat-row{gap:3px}.composer-cell{--chord-hue:0;background:var(--bg);border:1px solid var(--border);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:6px;flex-direction:column;justify-content:center;align-items:center;gap:4px;min-width:64px;height:72px;transition:all .15s;display:flex;position:relative}.composer-cell.downbeat{border-left:3px solid var(--border)}.composer-cell:hover{border-color:var(--accent);background:var(--surface2)}.composer-cell.has-chord{background:hsla(var(--chord-hue), 60%, 45%, .2);border-color:hsla(var(--chord-hue), 60%, 55%, .5)}.composer-cell.current{box-shadow:0 0 12px var(--accent-glow), inset 0 0 8px var(--accent-glow);border-color:var(--accent)}.composer-cell.current.has-chord{box-shadow:0 0 16px hsla(var(--chord-hue), 70%, 55%, .5)}.composer-beat-num{color:var(--text-dim);opacity:.5;font-size:.6rem}.composer-cell-chord{color:var(--text);min-height:1.2em;font-size:.8rem;font-weight:700}.composer-cell.has-chord .composer-cell-chord{color:hsla(var(--chord-hue), 70%, 75%, 1)}@media (width<=768px){.controls{flex-direction:column;align-items:flex-start}.clear-btn{margin-left:0}.piano-key.white{width:34px;height:130px}.piano-key.black{width:22px;height:82px;margin-left:-11px;margin-right:-11px}.guitar-cell,.guitar-marker-cell{width:50px;min-width:50px}.guitar-note-dot{width:24px;height:24px;font-size:.6rem}.header h1{font-size:1.5rem}}