/* Full‐screen, centered modal */
#gltf-viewer-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.8);
  z-index: 9999;
}

/* Modal content wrapper */
#gltf-viewer-modal .gltf-modal-content {
  position: relative;
  background: #222;
  padding: 0;
  border-radius: 4px;
}

/* Close button */
#gltf-viewer-modal .gltf-modal-close {
  position: absolute;
  top: 8px; right: 12px;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  z-index: 10;
}

/* 3D canvas container fills the modal */
#gltf-viewer-container {
  width: 100%;
  height: 100%;
  overflow: hidden;
}