body{
  margin:0;
  overflow:hidden;
  background:#000;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}
/* Unlock audio overlay */
#unmuteOverlay{
  position:fixed;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(0,0,0,0.35);
  z-index:10;
}
#unmuteBtn{
  font-size:18px;
  padding:12px 18px;
  border-radius:12px;
  border:none;
  cursor:pointer;
}
/* Hide the raw camera element */
video.input_video{ display:none; }
canvas{
  position:fixed;
  inset:0;
}