{# 论文卡片组件 — paper 变量必须在上下文中 #}
<article class="paper-card" data-arxiv="{{ paper.arxiv_id }}">
  <div class="paper-card-header">
    <h2 class="paper-title">
      <a href="/paper/{{ paper.arxiv_id }}">
        {{ paper.title_zh or paper.title_en }}
      </a>
    </h2>
    <span class="paper-upvotes">👍 {{ paper.upvotes }}</span>
  </div>

  {% if paper.summary and paper.summary.one_line %}
  <p class="paper-one-line">{{ paper.summary.one_line }}</p>
  {% elif paper.abstract %}
  <p class="paper-abstract-preview">{{ paper.abstract[:200] }}{% if paper.abstract|length > 200 %}…{% endif %}</p>
  {% endif %}

  <div class="paper-meta">
    <span class="paper-authors">
      {{ paper.authors|map(attribute='name')|join(', ')|truncate(80) }}
    </span>
  </div>

  <div class="paper-tags">
    {% for tag in paper.tags[:5] %}
    <span class="tag">{{ tag.tag }}</span>
    {% endfor %}
  </div>

  <div class="paper-footer">
    <span class="summary-badge summary-{{ paper.summary_status.status if paper.summary_status else 'none' }}">
      {% if not paper.summary_status or paper.summary_status.status == 'pending' %}
        未总结
      {% elif paper.summary_status.status == 'processing' %}
        🔄 总结中
      {% elif paper.summary_status.status == 'failed' or paper.summary_status.status == 'permanent_failure' %}
        ❌ 总结失败
      {% elif paper.summary_status.status == 'done' %}
        ✅ 已总结
      {% endif %}
    </span>
    <a href="/paper/{{ paper.arxiv_id }}" class="btn-detail">详情 →</a>
  </div>
</article>