{# Override of pydata_sphinx_theme's components/navbar-nav.html.

   PyData's default renders both top-level toctree items AND the configured
   external_links in one bar. For OpenCV we want ONLY this header nav (the
   tutorial module tree belongs in the left sidebar, not the header), so we
   render the `external_links` slot exclusively.

   These are NOT external links: conf.py declares them via the theme's
   `external_links` key only because that's the data slot for a custom header
   nav. Each entry is one of:
     * internal  -> {"docname": "<docname>", "name": ...}
       resolved with `pathto` so the relative URL is correct at ANY page depth
       and points at the Sphinx-rendered page (landing, tutorials, module roots);
     * external  -> {"url": "<abs-url>", "name": ..., "external": true}
       rendered verbatim and opened in a new tab (e.g. the Java docs, which
       have no Sphinx equivalent).

   Internal entries carry no target="_blank" / nav-external glyph since
   navigation never leaves the site. #}
<nav>
  <ul class="bd-navbar-elements navbar-nav">
    {%- for link in (theme_external_links or []) %}
    {%- if link.docname %}
      {%- set _href = pathto(link.docname) %}
      {%- set _external = false %}
    {%- else %}
      {%- set _href = link.url %}
      {%- set _external = link.get('external', false) %}
    {%- endif %}
    <li class="nav-item">
      <a class="nav-link" href="{{ _href }}"
         {%- if _external %} target="_blank" rel="noopener noreferrer"{% endif %}>{{ link.name }}</a>
    </li>
    {%- endfor %}
  </ul>
</nav>