function fallbackCopy(text: string): boolean {
  const ta = document.createElement("textarea");
  ta.value = text;
  ta.style.cssText = "position:fixed;left:-9999px;opacity:0";
  document.body.appendChild(ta);
  ta.select();
  let ok = false;
  try {
    ok = document.execCommand("copy");
  } catch {}
  document.body.removeChild(ta);
  return ok;
}

export async function clipboardCopy(text: string): Promise<boolean> {
  if (navigator.clipboard?.writeText) {
    try {
      await navigator.clipboard.writeText(text);
      return true;
    } catch {}
  }
  return fallbackCopy(text);
}