#brake-trainer-app{font-family:Arial,sans-serif;max-width:800px;margin:0 auto;padding:20px}.trainer-intro,.trainer-calibration,.trainer-exercise,.trainer-results{text-align:center}button{background-color:#007cba;color:#fff;border:none;padding:10px 20px;margin:10px;cursor:pointer;font-size:16px}button:hover{background-color:#005a87}#brake-graph{border:1px solid #ccc;margin:20px auto;display:block}#countdown{font-size:48px;font-weight:700;margin:20px}#score-display{font-size:24px;margin:20px}#detection-area{margin:10px auto;max-width:600px}#detection-bar{width:100%;height:18px;background:#eee;border-radius:8px;overflow:hidden;margin:8px 0}#detection-fill{height:100%;width:0%;background:linear-gradient(90deg,#4caf50,#8bc34a)}.cal-buttons button{margin:6px}#detection-confirm{text-align:center;margin-top:8px}#detection-confirm button{margin:6px}#calibration-controls{border-top:1px solid #ddd;margin-top:12px;padding-top:12px}#calibration-controls input[type="number"]{width:80px;margin-left:8px}.audio-modes{display:none}.email-result{margin-top:12px;text-align:left}.email-result input[type="email"]{width:260px}#device-list{background:#fafafa;border-radius:4px}.device-row{padding:8px;display:flex;gap:12px;align-items:center}.device-row .icon{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:4px;background:#fff;border:1px solid #eee;margin-right:8px}.device-row .icon.hid{background:linear-gradient(180deg,#e3f2fd,#bbdefb)}.device-row .icon.gamepad{background:linear-gradient(180deg,#f1f8e9,#dcedc8)}.device-row button{flex:0 0 auto}.device-row:focus{outline:2px solid #80d8ff}.device-meta{font-size:12px;color:#666}.device-hint{font-size:12px;color:#444;margin-top:6px}.tooltip{position:relative}.tooltip:hover::after{content:attr(data-tip);position:absolute;left:0;top:100%;background:#222;color:#fff;padding:6px 8px;border-radius:4px;white-space:nowrap;margin-top:6px;font-size:12px}#debug-area h5{margin:6px 0 4px 0;font-size:14px}#debug-log{background:#0b0b0b;color:#dcdcdc;padding:8px;border-radius:4px;font-family:monospace;font-size:12px}.log-entry{margin-bottom:6px}.log-entry .ts{color:#999;margin-right:8px}.log-entry.info{color:#bde0fe}.log-entry.warn{color:#ffd580}.log-entry.error{color:#ff9b9b}