document.addEventListener('submit',event=>{
  const form=event.target;if(!form.matches('form'))return;
  requestAnimationFrame(()=>{if(!form.checkValidity())return;form.querySelectorAll('button[type="submit"],button:not([type])').forEach(button=>{button.disabled=true;button.setAttribute('aria-busy','true');if(!button.dataset.label)button.dataset.label=button.textContent;button.textContent='در حال ثبت…'})});
});
document.querySelectorAll('.flash').forEach(flash=>{
  const close=document.createElement('button');close.type='button';close.className='flash-close';close.setAttribute('aria-label','بستن پیام');close.textContent='×';close.addEventListener('click',()=>flash.remove());flash.appendChild(close);
  if(flash.classList.contains('success'))setTimeout(()=>{flash.classList.add('flash-leaving');setTimeout(()=>flash.remove(),250)},7000);
});