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0}.action-btn{width:48px;height:48px;border:0;background:#667eea;color:#fff;border-radius:10px;cursor:pointer;font-size:1.3rem;transition:all .3s ease;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(102,126,234,.3)}.action-btn:hover{background:#764ba2;transform:translateX(-3px);box-shadow:0 4px 12px rgba(102,126,234,.5)}.action-btn:active{transform:translateX(-1px)}@media (max-width:768px){body{padding:8px}.container{padding:10px;max-height:calc(100vh - 16px)}.title{font-size:1.3rem;margin-bottom:12px}.upload-section{margin-bottom:12px}.lyric-line{font-size:1.15rem;padding:10px;margin:5px 0}.lyric-line.active{font-size:1.3rem}.bottom-controls{gap:6px;padding:10px 8px}.btn-text{display:none}.bottom-btn{padding:8px}.controls{gap:18px;margin-top:12px;margin-bottom:12px}}