:root{
  --bg:#000;
  --fg:#fff;
  --muted:rgba(255,255,255,.65);
  --muted2:rgba(255,255,255,.35);
  --accent:rgba(255,255,255,.9);
  --safe-top: env(safe-area-inset-top);
  --safe-right: env(safe-area-inset-right);
  --safe-bottom: env(safe-area-inset-bottom);
  --safe-left: env(safe-area-inset-left);
}

*{ box-sizing:border-box; }

html,body{
  height:100%;
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

body{
  display:flex;
  align-items:center;
  justify-content:center;
  padding:
    calc(16px + var(--safe-top))
    calc(16px + var(--safe-right))
    calc(16px + var(--safe-bottom))
    calc(16px + var(--safe-left));
  user-select:none;
  -webkit-user-select:none;
  -webkit-touch-callout:none;
  touch-action: manipulation; /* helps taps feel snappy */
}