templates/_header.html

<header class="app-header">
    <h1 class="header-title">
        <i class="bi {{ icon | default('bi-app') }} me-2"></i>
        {{ title | default('DocuPDF') }}
    </h1>
    <div class="header-actions">
        {% block header_actions %}{% endblock %}
    </div>
</header>