body { margin: 0; font-family: system-ui, sans-serif; background: #f2f2f2; color: #222; }
main { max-width: 520px; margin: 0 auto; padding: 16px; text-align: center; }
canvas, video { width: 100%; max-width: 480px; background: #fff; border-radius: 12px; box-shadow: 0 2px 10px #0002; }
.bg { display: block; margin: 10px 0 0; font-size: 14px; }
.bg select { font-size: 15px; padding: 4px 8px; }
.meter { height: 8px; background: #ddd; border-radius: 4px; margin: 12px auto; max-width: 480px; overflow: hidden; }
#level { height: 100%; width: 0; background: #2a9d4b; }
.controls { display: flex; gap: 16px; justify-content: center; align-items: center; margin: 8px 0; }
button, .btn { font-size: 18px; padding: 10px 22px; border: 0; border-radius: 8px; background: #d62828; color: #fff; cursor: pointer; text-decoration: none; display: inline-block; }
button.recording { background: #333; }
#timer { font-variant-numeric: tabular-nums; font-size: 18px; }
.sliders { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; font-size: 14px; }
#status { color: #666; font-size: 14px; }
#result { margin-top: 16px; }
#result .btn { background: #1d6fd6; margin-top: 10px; }