{% macro breadcrumb(crumbs) %}
    <nav aria-label="breadcrumb" class="my-3">
        <ol class="breadcrumb">
            {% for crumb in crumbs %}
                <li class="breadcrumb-item {% if loop.last %}active{% endif %}">
                    {% if crumb.url %}
                        <a href="{{ crumb.url }}">{{ crumb.title }}</a>
                    {% else %}
                        <b>{{ crumb.title }}</b>
                    {% endif %}
                </li>
            {% endfor %}
        </ol>
    </nav>

    {# Génération des données structurées (JSON-LD) pour le SEO #}
    <script type="application/ld+json">
        {
            "@context": "https://schema.org",
            "@type": "BreadcrumbList",
            "itemListElement": [
                {% for crumb in crumbs %}
                {
                    "@type": "ListItem",
                        "position": {{ loop.index }},
                        "name": "{{ crumb.title }}"
                        {% if crumb.url %},
                            "item": {
                                "@id": "{{ absolute_url(crumb.url) }}",
                                "name": "{{ crumb.title }}"
                            }
                        {% endif %}
                }{% if not loop.last %},{% endif %}
                {% endfor %}
            ]
        }
    </script>
{% endmacro %}