{{define "base/navbar"}}
  <header class="j13-header app-header">
    <div class="j13-header__inner header-inner">
      <a class="j13-brand header-brand" href="/">
        {{if .LogoURL}}
        <img class="j13-brand__logo header-logo-mark" src="{{.LogoURL}}" alt="{{.SiteName}}"/>
        {{else}}
        <span class="j13-brand__mark header-logo-mark">{{.LogoMark}}</span>
        {{end}}
        <span class="header-logo-text">{{.SiteName}}</span>
      </a>
      <form class="header-search-wrap" method="get" action="/" role="search" id="j13-header-search">
        <div class="header-search-row">
          <svg class="header-search-icon" width="15" height="15" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M10.5 3a7.5 7.5 0 015.95 12.1l4.22 4.23a1 1 0 01-1.42 1.41l-4.22-4.22A7.5 7.5 0 1110.5 3zm0 2a5.5 5.5 0 100 11 5.5 5.5 0 000-11z"/></svg>
          <input class="header-search-input" id="j13-header-search-input" type="search" name="keyword" value="" placeholder="搜索帖子…" autocomplete="off"/>
          <button type="button" class="header-search-filter-btn" id="j13-search-filter-btn" aria-label="高级筛选" title="高级筛选">
            <svg width="14" height="14" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M3 5h18v2.17L14 14v5l-4 2v-7L3 7.17V5z"/></svg>
          </button>
          <kbd class="header-search-kbd" aria-hidden="true">Ctrl K</kbd>
        </div>
      </form>
      <div class="header-actions">
        {{if .LoggedIn}}
          <a class="header-compose-btn" href="/compose"><span aria-hidden="true">+</span> 发帖</a>
        {{else}}
          <a class="header-compose-btn" href="/login">登录</a>
        {{end}}
        <div class="header-action-group">
          <button type="button" class="header-icon-btn j13-theme-toggle" id="j13-theme-toggle" aria-label="切换主题" title="切换主题">
            <svg class="j13-theme-toggle__icon" width="16" height="16" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M21 14.3A8.5 8.5 0 019.7 3 7 7 0 1019 16.5c.7-.6 1.3-1.4 2-2.2z"/></svg>
            <span class="j13-visually-hidden j13-theme-toggle__label">主题</span>
          </button>
          {{if .LoggedIn}}
            <a class="header-icon-btn" href="/messages" title="私信" aria-label="私信">
              <svg width="16" height="16" viewBox="0 0 24 24" aria-hidden="true"><path fill="currentColor" d="M4 4h16a2 2 0 012 2v12a2 2 0 01-2 2H4a2 2 0 01-2-2V6a2 2 0 012-2zm0 2v.51l8 5.33 8-5.33V6H4zm16 3.04l-7.45 4.97a1 1 0 01-1.1 0L4 9.04V18h16V9.04z"/></svg>
              {{if gt .UnreadCount 0}}<span class="j13-badge">{{.UnreadCount}}</span>{{end}}
            </a>
            <details class="j13-more header-user-menu">
              <summary class="header-user-btn" title="{{.ViewerName}}">
                {{if .ViewerAvatar}}
                <img class="header-user-avatar" src="{{.ViewerAvatar}}" alt=""/>
                {{else}}
                <span class="header-user-initial">{{.ViewerMark}}</span>
                {{end}}
              </summary>
              <div class="j13-more__menu" role="menu">
                <a href="/profile" role="menuitem">{{.ViewerName}} · {{.ViewerPoints}} 积分</a>
                <a href="/favorites" role="menuitem">收藏</a>
                <a href="/messages" role="menuitem">私信</a>
                {{if .IsAdmin}}<a href="/admin/dashboard" role="menuitem">后台</a>{{end}}
                {{if .ShowFriendLinksNav}}<a href="/links" role="menuitem">友链</a>{{end}}
                {{range .NavPages}}<a href="/page/{{.Slug}}" role="menuitem">{{.Title}}</a>{{end}}
                <a href="/boards" role="menuitem">板块</a>
                <form method="post" action="/logout">
                  <input type="hidden" name="_csrf" value="{{.CSRF}}"/>
                  <button type="submit" role="menuitem">退出</button>
                </form>
              </div>
            </details>
          {{else}}
            <a class="header-login-btn" href="/register">注册</a>
          {{end}}
        </div>
      </div>
    </div>
  </header>
{{end}}