(() => {
    const number = '+966556465829';
    const content = ' تصميم وتنفيذ | مرسال 2026';
    const selector = '.store-footer > div:last-child > span';

    function inject() {
        const anchorFooter = document.querySelector(selector);

        if (!anchorFooter) return false;
        if (anchorFooter.dataset.injected) return true;

        anchorFooter.innerHTML = `
            <a href="https://wa.me/${ number }"
               class="flex items-center mb-4 md:mb-0 underline"
               target="_blank"
            >
                ${ content }
            </a>
        `;

        anchorFooter.dataset.injected = 'true';
        return true;
    }

    if (inject()) return;

    const observer = new MutationObserver(() => {
        if (inject()) observer.disconnect();
    });

    observer.observe(document.body, {
        childList: true,
        subtree: true
    });
})();