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768px){.main-content{padding:2rem}.sequencer{padding:2rem;margin:1rem}.controls{flex-direction:row;justify-content:center;gap:2rem}.control-group,button{max-width:200px}}.play-button{width:48px;height:48px;padding:0;display:flex;align-items:center;justify-content:center;background-color:#4caf50cc;color:#fff;border:none;border-radius:50%;cursor:pointer;transition:all .3s}.play-button:hover{background-color:#4caf50;transform:scale(1.1)}.play-button:active{transform:scale(.95)}.play-button svg{width:24px;height:24px}@media (prefers-color-scheme: light){.control-group label,.note-label,.control-group select{color:#666}}.bpm-control{display:flex;align-items:center;gap:.5rem;background:#ffffff1a;padding:.5rem;border-radius:8px}.bpm-button{width:36px;height:36px;padding:0;font-size:1.2rem;background-color:#4caf50cc;color:#fff;border:none;border-radius:50%;cursor:pointer;transition:all 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