body {
  margin: 0;
  background: black;
  color: white;
  font-family: sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  overflow: hidden;
}

img, video {
  max-width: 100%;
  max-height: 100%;
}

.overlay {
  position: fixed;
  bottom: 40px;
  right: 40px;
  background: rgba(0,0,0,0.8);
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 16px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.overlay.visible {
  opacity: 1;
}