/* Add custom JS code below */ 
function addBuyNowButtons() {
  document.querySelectorAll('salla-add-product-button').forEach(function (addBtn) {
    if (addBtn.dataset.buyNowAdded) return;
    const id = addBtn.getAttribute('product-id');
    if (!id) return;
    addBtn.dataset.buyNowAdded = '1';

    const b = document.createElement('button');
    b.type = 'button';
    b.className = 'buy-now-btn';
    b.textContent = 'اشتري الآن';
    b.addEventListener('click', function () {
      b.disabled = true;
      salla.cart.addItem({ id: id, quantity: 1 })
        .then(function () { window.location.href = '/cart'; })
        .catch(function () { b.disabled = false; });
    });
    addBtn.insertAdjacentElement('afterend', b);
  });
}

document.addEventListener('DOMContentLoaded', addBuyNowButtons);
new MutationObserver(addBuyNowButtons).observe(document.body, { childList: true, subtree: true });
<script type="text/javascript">
    (function(c,l,a,r,i,t,y){
        c[a]=c[a]||function(){(c[a].q=c[a].q||[]).push(arguments)};
        t=l.createElement(r);t.async=1;t.src="https://www.clarity.ms/tag/"+i;
        y=l.getElementsByTagName(r)[0];y.parentNode.insertBefore(t,y);
    })(window, document, "clarity", "script", "yrzek6yls3");
</script>