{{ define "header" }}
  <header>
    {{- if .Description -}}
    <hgroup>
      <h1>{{ .Title }}</h1>
      <p>{{ .Description }}</p>
    </hgroup>
    {{- else -}}
    <h1>{{ .Title }}</h1>
    {{- end }}
  </header>
{{ end }}

{{ define "content" }}
  {{/* Docs sidebar — this is navigation, not an aside */}}
  <nav aria-label="Documentation" data-nav="sidebar">
    {{- $menu := index .Site.Menus "docs" -}}
    {{- if $menu -}}
      {{- range $menu -}}
        {{- if .HasChildren -}}
        <small>{{ .Name }}</small>
        <ul>
          {{- range .Children -}}
          <li>
            <a href="{{ .URL }}"
              {{- if eq (relURL .URL) $.RelPermalink }} aria-current="page"{{ end -}}>
              {{- .Name -}}
            </a>
          </li>
          {{- end -}}
        </ul>
        {{- else -}}
        <ul>
          <li>
            <a href="{{ .URL }}"
              {{- if eq (relURL .URL) $.RelPermalink }} aria-current="page"{{ end -}}>
              {{- .Name -}}
            </a>
          </li>
        </ul>
        {{- end -}}
      {{- end -}}
    {{- else -}}
      {{- with .CurrentSection -}}
      <small>{{ .Title }}</small>
      <ul>
        {{- range .RegularPages -}}
        <li>
          <a href="{{ .RelPermalink }}"
             {{- if eq .RelPermalink $.RelPermalink }} aria-current="page"{{ end -}}>
            {{- .LinkTitle -}}
          </a>
        </li>
        {{- end -}}
      </ul>
      {{- end -}}
    {{- end -}}
  </nav>

  <article role="main">
    {{ .Content }}

    {{- if or .PrevInSection .NextInSection -}}
    <footer data-role="prev-next">
      {{- with .NextInSection -}}
      <a href="{{ .RelPermalink }}" rel="prev">
        <small>← Previous</small>
        <span>{{ .LinkTitle }}</span>
      </a>
      {{- end -}}
      {{- with .PrevInSection -}}
      <a href="{{ .RelPermalink }}" rel="next">
        <small>Next →</small>
        <span>{{ .LinkTitle }}</span>
      </a>
      {{- end -}}
    </footer>
    {{- end -}}
  </article>

  {{- with .TableOfContents -}}
  <aside data-toc>
    <small>On this page</small>
    {{ . }}
  </aside>
  {{- end -}}
{{ end }}