window.addEventListener('message', function (event) {
  if (event.data && event.data.type === 'iframe-resize') {
    const iframe = document.getElementById('chatFrame'); // Adjust selector to your iframe
    if (iframe) {
      // Delay a bit to let the DOM fully update
      setTimeout(() => {
        iframe.style.height = event.data.height + 'px';
        iframe.style.maxHeight = '100vh'; // Prevent growing outside viewport
      }, 100);
    }
  }
});