{% extends "pydata_sphinx_theme/layout.html" %}

{% block extrahead %}
  {{ super() }}
  {# Source Sans Pro 400 regular+italic and 700 regular from Google Fonts #}
  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
  <link href="https://fonts.googleapis.com/css2?family=Source+Sans+Pro:ital,wght@0,400;0,700;1,400&display=swap" rel="stylesheet">

  {# Sitemap link for search engines #}
  {%- if pageurl %}
  {%- set base_url = pageurl.split('://')[0] + '://' + pageurl.split('://')[1].split('/')[0] + '/' %}
  <link rel="sitemap" type="application/xml" href="{{ base_url }}sitemap.xml">
  {%- endif %}

  {# DOI landing-page metadata for the site's [[project.citations]].
     DataCite asks that a DOI's landing page carry its DOI in machine-readable
     form, and Google Scholar and Zotero read the wider Highwire set around it
     -- title, creators and their institutions and ORCIDs, publication date,
     publisher, and the full-text URL -- which is what gives a reader a
     one-click "Save to Zotero" with the right record. These tags describe the
     one citation marked `self`: `self` is the claim that this site is where
     that DOI resolves, and it alone belongs here -- which citation the site
     asks readers to *use* is `preferred`, and that is a question for the
     visible surfaces, not for a harvester. The whole block arrives already
     escaped from documenteer.citations.compose_highwire_tags, published into
     html_context by the guide preset (and replaced, on a page a citation
     claims, by documenteer.ext.citationpage) -- nothing is composed here, so
     it is emitted verbatim. A site that declares no citations, or none marked
     `self`, sets no variable and emits nothing. #}
  {%- if documenteer_self_citation_metatags %}
  {{ documenteer_self_citation_metatags|indent(2)|safe }}
  {%- endif %}
  {# The site's citations as a schema.org description of the work this page is
     the landing page for. The value arrives already serialized and escaped
     for a <script> element (see documenteer.citations), so it is emitted
     verbatim. It is a separate block from the per-page WebPage statement that
     documenteer.ext.lastmodified emits: that one describes this page's
     freshness, this one describes the site and the works it cites. #}
  {%- if documenteer_citations_jsonld %}
  <script id="documenteer-citation-metadata" type="application/ld+json">{{ documenteer_citations_jsonld|safe }}</script>
  {%- endif %}
{% endblock %}