/* ✅ Control bar */
.control-bar {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  padding: 8px;
  background: #a8a6a6;
  box-sizing: border-box;
}
.btn-fullscreen {
  flex: 1;
  padding: 10px;
  font-size: 1rem;
  border: none;
  border-radius: 6px;
  background: #007bff;
  color: #fff;
  cursor: pointer;
}
.btn-fullscreen:hover {
  background: #0056b3;
}