html,
body,
#cesiumContainer {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

#menu {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#menu button {
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
}

#menu button:hover {
  background: rgba(255, 255, 255, 0.3);
}