{% assign segs = site.data.course.segments %}
{% for s in segs %}
  {% if s == include.segment %}
    {% assign segnum = forloop.index0 %}
    {% break %}
  {% endif %}
{% endfor %}

{% assign p = segnum | minus: 1 %}
{% assign n = segnum | plus: 1 %}
{% if p != -1 %}{% assign prev = segs[p] %}{% endif %}
{% assign next = segs[n] %}

<section class="center-align">
  <div class="middle-align">
    {% if prev %}
      {% if include.icon %}
        {{ site.data.syllabus[prev].title }}
      {% endif %}
      <a href="/segment/{{ prev }}" class="material-symbols-outlined md-48">navigate_before</a>
    {% else %}
      <span class="material-symbols-outlined md-48 md-disabled">navigate_before</span>
    {% endif %}

    {% if include.icon %}
      <a href="/segment/{{ include.segment }}" class="material-symbols-outlined">calendar_today</a>
    {% else %}
      <a href="/segment/{{ include.segment }}"><h3>{{ site.data.syllabus[include.segment].title }}</h3></a>
    {% endif %}

    {% if next %}
      <a href="/segment/{{ next }}" class="material-symbols-outlined md-48">navigate_next</a>
      {% if include.icon %}
        {{ site.data.syllabus[next].title }}
      {% endif %}
    {% else %}
      <span class="material-symbols-outlined md-48 md-disabled">navigate_next</span>
    {% endif %}
  </div>
</section>