const switchLanguage = () => {
  // Get current URL
  let url = window.location.href;
  let path = window.location.pathname;
  let filename = path.split("/").pop();

  // Detect if it's an English page
  if (filename.endsWith(".en.html")) {
    // Switch to German: remove ".en"
    let newFilename = filename.replace(".en.html", ".html");
    let newUrl = url.replace(filename, newFilename);
    window.location.href = newUrl;
  } else if (filename.endsWith(".html")) {
    // Switch to English: add ".en"
    let newFilename = filename.replace(".html", ".en.html");
    let newUrl = url.replace(filename, newFilename);
    window.location.href = newUrl;
  }
}