/* External so the ad-frame CSP can be script-src/style-src 'self' (no 'unsafe-inline'). */
html,
body {
  margin: 0;
  height: 100%;
  background: transparent;
  font: 500 12px/1.4 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
/* Placeholder that fills whatever box the app's AdSlot gives us (rect / banner / tall rail).
   Replaced by the real ad unit once the GAM tag is wired. */
#placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  color: #8a8a8a;
  border: 1px dashed rgba(128, 128, 128, 0.4);
  border-radius: 12px;
  text-align: center;
}
#placeholder .tag {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 10px;
}
/* The real ad unit mounts here. */
#ad-slot {
  width: 100%;
  height: 100%;
}