body {
  margin: 0;
  background: #111;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: sans-serif;
}

#card {
  position: relative;
  width: 300px;
  height: 400px;
  background: linear-gradient(135deg, #222, #444);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  text-align: center;
}

#highlight {
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 30%, transparent 70%);
  pointer-events: none;
  transition: background 0.05s;
}

#permission-btn {
  position: absolute;
  top: 20px;
  padding: 10px 20px;
  background: #444;
  color: white;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 1rem;
  display: none;
}