{% macro change_row(c) %}
  <li class="{{ 'unseen' if not c.seen else '' }}"
      {% if c.detail %}title="{{ c.detail }}"{% endif %}>
    <span class="tag tag-{{ c.field }}">{{ c.label }}</span>
    <a class="cnum" href="{{ url_for('ticket_detail', ticket_id=c.ticket_id) }}">#{{ c.ticket_number }}</a>
    <span class="ctitle">{{ c.ticket_title }}</span>
    <span class="cchg">{{ c.old_value or '–' }} → <b>{{ c.new_value or '–' }}</b></span>
    <time>{{ c.detected_at|dt }}</time>
    {% if not c.seen %}
      <form method="post" action="{{ url_for('mark_one_read', change_id=c.id) }}" class="mark-one">
        <button type="submit" title="Als gelesen markieren">✓</button>
      </form>
    {% else %}
      <span class="seen-dot" title="gelesen">·</span>
    {% endif %}
  </li>
{% endmacro %}