.obj-viewer {
  width: 100%;
  background: #f3f3f3;
  position: relative;
  overflow: hidden;
}

.obj-viewer canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.obj-viewer-loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 16px;
  color: #666;
  z-index: 10;
  background: rgba(255, 255, 255, 0.7);
  padding: 10px 20px;
  border-radius: 4px;
}

.obj-viewer-error {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 14px;
  color: #d32f2f;
  text-align: center;
  background: rgba(255, 255, 255, 0.8);
  padding: 10px;
  border-radius: 4px;
  max-width: 80%;
  z-index: 20;
}

.obj-viewer-warning {
  position: absolute;
  bottom: 10px;
  left: 10px;
  font-size: 12px;
  color: #ff9800;
  background: rgba(255, 255, 255, 0.8);
  padding: 5px 10px;
  border-radius: 4px;
  z-index: 15;
}