:root{
  --bg:#0b0b0b;
  --panel:rgba(0,0,0,0.45);
  --accent:#ff6a00;
}
html,body{height:100%;margin:0;background:var(--bg);-webkit-font-smoothing:antialiased;}
#c{width:100vw;height:100vh;display:block;touch-action:none;}
#ui{
  position: absolute;
  left: 12px;
  top: 12px;
  display:flex;
  gap:8px;
  align-items:center;
  padding:8px;
  border-radius:10px;
  background:var(--panel);
  color:#fff;
  font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial;
  font-size:13px;
  backdrop-filter: blur(6px);
}
#ui button{background:transparent;border:1px solid rgba(255,255,255,0.12);color:#fff;padding:6px 10px;border-radius:8px;min-height:36px;}
#ui label{display:flex;align-items:center;gap:8px;color:#ddd;}
#ui input[type=range]{width:110px;}