Markdown → HTML
Markdown
HTML Source 

            
        

    











    


`;
    }

    async function copyHtml() {
        try {
            await navigator.clipboard.writeText(getHtmlFragment());
            toast('HTML copied to clipboard.', 'success');
        } catch (_) {
            toast('Copy failed; select and copy manually.', 'warning');
        }
    }

    function downloadHtml() {
        const blob = new Blob([buildFullDocument()], { type: 'text/html' });
        const url = URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = url;
        a.download = 'document.html';
        document.body.appendChild(a); a.click(); a.remove();
        URL.revokeObjectURL(url);
    }

    function toast(msg, type = 'success', duration = 3500) {
        const el = document.createElement('div');
        el.className = `toast ${type}`;
        el.textContent = msg;
        dom.toastContainer.appendChild(el);
        setTimeout(() => {
            el.classList.add('exiting');
            el.addEventListener('animationend', () => el.remove());
        }, duration);
    }
})();