:root{
  --panel:#0b1020cc;
  --text:#e8f0ff;
  --shadow: 0 12px 40px rgba(0,0,0,.55);
  --r: 18px;
}

html, body {
  height: 100%;
  margin: 0;
  background: #000;
}

.stage {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: #000;
  touch-action: manipulation;
  user-select: none;
}

.face {
  width: 100vw;
  height: 100vh;
  display: block;
}

/* Touch-only overlay with two links */
.overlay{
  position: fixed;
  left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  bottom: max(12px, env(safe-area-inset-bottom));
  display:flex;
  gap:10px;
  justify-content:flex-start;
  align-items:center;

  background: var(--panel);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--r);
  padding: 10px 12px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  opacity:0;
  transform: translateY(10px);
  pointer-events:none;
  transition: opacity .18s ease, transform .18s ease;
}

.overlay.show{
  opacity:1;
  transform: translateY(0);
  pointer-events:auto;
}

a.btn{
  appearance:none;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: var(--text);
  border-radius: 14px;
  padding: 10px 12px;
  font-size: 14px;
  text-decoration:none;
  line-height:1;
  display:inline-flex;
  align-items:center;
  gap:8px;
}

a.btn:active{ transform: translateY(1px); }