{{- /* Wiki-Seitenleiste: alle Wiki-Seiten nach `group` gruppiert, mit Filter.
       Seiten ohne `group` landen unter „Allgemein“. */ -}}
{{- $cur := .RelPermalink -}}
{{- $pages := where site.RegularPages "Section" "wiki" -}}
{{- $groups := dict -}}
{{- range $pages -}}
  {{- $g := .Params.group | default "Allgemein" -}}
  {{- $existing := index $groups $g | default slice -}}
  {{- $groups = merge $groups (dict $g ($existing | append .)) -}}
{{- end -}}
<nav class="wiki-nav" aria-label="Wiki-Navigation">
  <a class="wiki-nav-home{{ if .IsSection }} is-current{{ end }}" href="/wiki/">Übersicht</a>
  <input class="wiki-filter" type="search" placeholder="filtern…" aria-label="Wiki filtern" autocomplete="off" />
  {{- range $g, $ps := $groups }}
  <div class="wiki-nav-group">
    <div class="wiki-nav-title">{{ $g }}</div>
    <ul>
      {{- range sort $ps "Title" }}
      <li><a href="{{ .RelPermalink }}"{{ if eq .RelPermalink $cur }} class="is-current" aria-current="page"{{ end }}>{{ .LinkTitle }}</a></li>
      {{- end }}
    </ul>
  </div>
  {{- end }}
</nav>
<script>
  (function () {
    if (window.__wikiFilter) return; window.__wikiFilter = 1;
    var inp = document.querySelector('.wiki-filter'); if (!inp) return;
    inp.addEventListener('input', function () {
      var q = inp.value.trim().toLowerCase();
      document.querySelectorAll('.wiki-nav-group').forEach(function (g) {
        var any = false;
        g.querySelectorAll('li').forEach(function (li) {
          var hit = li.textContent.toLowerCase().indexOf(q) > -1;
          li.style.display = hit ? '' : 'none'; if (hit) any = true;
        });
        g.style.display = any ? '' : 'none';
      });
    });
  })();
</script>