.app{width:100vw;height:100vh;background-color:#fff;position:relative;overflow:hidden}.ball{width:50px;height:50px;background-color:#000;border-radius:50%;position:absolute;top:50%;transform:translateY(-50%);transition:none}.controls{position:fixed;bottom:20px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;align-items:center;gap:15px;background:rgba(240,240,240,.9);padding:20px;border-radius:10px;box-shadow:0 2px 10px #0000001a}.play-pause-btn{background-color:#007aff;color:#fff;border:none;padding:12px 24px;font-size:16px;border-radius:8px;cursor:pointer;transition:background-color .2s}.play-pause-btn:hover{background-color:#0056cc}.play-pause-btn:active{background-color:#003d99}.speed-control{display:flex;flex-direction:column;align-items:center;gap:8px}.speed-control label{font-size:14px;font-weight:500;color:#333}.speed-control input[type=range]{width:150px;height:6px;background:#ddd;outline:none;border-radius:3px;cursor:pointer}.speed-control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;background:#007AFF;border-radius:50%;cursor:pointer}.speed-control input[type=range]::-moz-range-thumb{width:18px;height:18px;background:#007AFF;border-radius:50%;cursor:pointer;border:none}.timer-display{position:fixed;top:30px;left:50%;transform:translate(-50%);font-size:48px;font-weight:700;color:#333;background:rgba(240,240,240,.9);padding:15px 30px;border-radius:10px;box-shadow:0 2px 10px #0000001a;font-family:Courier New,monospace;min-width:150px;text-align:center}.timer-control{display:flex;flex-direction:column;align-items:center;gap:8px}.timer-control label{font-size:14px;font-weight:500;color:#333}.timer-control input[type=range]{width:150px;height:6px;background:#ddd;outline:none;border-radius:3px;cursor:pointer}.timer-control input[type=range]:disabled{opacity:.5;cursor:not-allowed}.timer-control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;background:#28a745;border-radius:50%;cursor:pointer}.timer-control input[type=range]:disabled::-webkit-slider-thumb{cursor:not-allowed}.timer-control input[type=range]::-moz-range-thumb{width:18px;height:18px;background:#28a745;border-radius:50%;cursor:pointer;border:none}.timer-control input[type=range]:disabled::-moz-range-thumb{cursor:not-allowed}.button-group{display:flex;gap:10px;align-items:center}.reset-btn{background-color:#dc3545;color:#fff;border:none;padding:12px 24px;font-size:16px;border-radius:8px;cursor:pointer;transition:background-color .2s}.reset-btn:hover{background-color:#c82333}.reset-btn:active{background-color:#bd2130}.help-button{position:fixed;top:20px;right:20px;width:50px;height:50px;border-radius:50%;background-color:#007aff;color:#fff;border:none;font-size:28px;font-weight:700;cursor:pointer;box-shadow:0 2px 10px #0003;transition:background-color .2s,transform .2s;z-index:1000;display:flex;align-items:center;justify-content:center;line-height:1;padding:0}.help-button:hover{background-color:#0056cc;transform:scale(1.05)}.help-button:active{background-color:#003d99;transform:scale(.95)}.help-pane{position:fixed;top:0;right:-34%;width:33.333%;height:100vh;background-color:#fff;box-shadow:-2px 0 10px #0003;transition:right .3s ease-in-out;z-index:999;overflow-y:auto;display:flex;flex-direction:column}.help-pane.open{right:0}.help-pane-header{display:flex;justify-content:space-between;align-items:center;padding:20px 25px;border-bottom:2px solid #e0e0e0;background-color:#f8f9fa;position:sticky;top:0;z-index:10}.help-pane-header h2{margin:0;font-size:24px;color:#333;font-weight:600}.close-button{background:none;border:none;font-size:36px;color:#666;cursor:pointer;padding:0;width:36px;height:36px;display:flex;align-items:center;justify-content:center;line-height:1;transition:color .2s}.close-button:hover{color:#333}.help-pane-content{padding:25px;flex:1}.help-pane-content section{margin-bottom:30px}.help-pane-content section:last-child{margin-bottom:0}.help-pane-content h3{font-size:20px;color:#007aff;margin-top:0;margin-bottom:15px;font-weight:600}.help-pane-content p{font-size:15px;line-height:1.6;color:#444;margin:0 0 12px}.help-pane-content ul,.help-pane-content ol{font-size:15px;line-height:1.7;color:#444;margin:12px 0;padding-left:25px}.help-pane-content li{margin-bottom:8px}.help-pane-content strong{color:#333;font-weight:600}.help-pane-content .disclaimer{background-color:#fff3cd;border-left:4px solid #ffc107;padding:15px;margin-top:20px;border-radius:4px;font-size:14px;color:#856404}.help-pane-content .feedback-email{color:#007aff;text-decoration:none;font-weight:500;transition:color .2s}.help-pane-content .feedback-email:hover{color:#0056cc;text-decoration:underline}@media (max-width: 768px){.help-pane{width:100%;right:-100%}.help-pane.open{right:0}.help-pane-header h2{font-size:20px}.help-pane-content{padding:20px}.help-pane-content h3{font-size:18px}.help-pane-content p,.help-pane-content ul,.help-pane-content ol{font-size:14px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:#fff;overflow:hidden}#root{width:100vw;height:100vh}