/* ========== AI 头条 — 专业资讯卡片 ========== */

#news-container {
  width: 100%;
  margin-top: 20px;
}

/* 顶部信息条 */
.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0 20px;
  margin-bottom: 8px;
}
.news-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}
.news-header-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.news-header-title {
  font-size: 1rem;
  font-weight: 600;
  color: #555;
}
.news-header-badge {
  font-size: 0.7rem;
  color: #999;
  background: #f0f0f0;
  padding: 4px 10px;
  border-radius: 20px;
}

/* 卡片列表 */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 单条新闻卡片 */
.news-item {
  display: flex;
  align-items: stretch;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
  transition: box-shadow 0.2s, transform 0.2s;
  border: 1px solid #f0f0f0;
}
.news-item:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transform: translateY(-1px);
}

/* 左侧分类色条 */
.news-accent {
  width: 4px;
  flex-shrink: 0;
  background: #e0e0e0;
  transition: background 0.3s;
}
.news-accent.cat-llm       { background: #6366f1; }  /* 大模型 — 紫 */
.news-accent.cat-gen       { background: #ec4899; }  /* AI 生成 — 粉 */
.news-accent.cat-chip      { background: #f59e0b; }  /* AI 芯片 — 金 */
.news-accent.cat-research  { background: #10b981; }  /* AI 研究 — 绿 */
.news-accent.cat-product   { background: #3b82f6; }  /* AI 产品 — 蓝 */
.news-accent.cat-dev       { background: #8b5cf6; }  /* AI 开发 — 紫蓝 */
.news-accent.cat-agent     { background: #14b8a6; }  /* AI Agent — 青 */
.news-accent.cat-policy    { background: #f43f5e; }  /* AI 政策 — 红 */
.news-accent.cat-robot     { background: #fb923c; }  /* 机器人 — 橙 */
.news-accent.cat-news      { background: #94a3b8; }  /* AI 资讯 — 灰蓝 */

/* 右侧内容区 */
.news-body {
  flex: 1;
  min-width: 0;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 标题 */
.news-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.5;
  color: #1a1a2e;
  text-decoration: none;
  display: block;
  transition: color 0.2s;
  /* 2行截断 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-title:hover {
  color: #6366f1;
}

/* 摘要 */
.news-desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: #666;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 底部元信息 */
.news-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* 来源标签 */
.news-source {
  font-size: 0.7rem;
  font-weight: 500;
  color: #555;
  background: #f5f5f5;
  padding: 3px 8px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}
.news-source.src-hn       { color: #ff6600; background: #fff7ed; }
.news-source.src-reddit   { color: #ff4500; background: #fff2ed; }
.news-source.src-arxiv    { color: #b31b1b; background: #fef2f2; }
.news-source.src-github   { color: #333;    background: #f5f5f5; }

/* 分类标签 */
.news-cat {
  font-size: 0.68rem;
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.news-cat.cat-llm       { color: #6366f1; background: rgba(99,102,241,0.08); }
.news-cat.cat-gen       { color: #ec4899; background: rgba(236,72,153,0.08); }
.news-cat.cat-chip      { color: #f59e0b; background: rgba(245,158,11,0.08); }
.news-cat.cat-research  { color: #10b981; background: rgba(16,185,129,0.08); }
.news-cat.cat-product   { color: #3b82f6; background: rgba(59,130,246,0.08); }
.news-cat.cat-dev       { color: #8b5cf6; background: rgba(139,92,246,0.08); }
.news-cat.cat-agent     { color: #14b8a6; background: rgba(20,184,166,0.08); }
.news-cat.cat-policy    { color: #f43f5e; background: rgba(244,63,94,0.08); }
.news-cat.cat-robot     { color: #fb923c; background: rgba(251,146,60,0.08); }
.news-cat.cat-news      { color: #64748b; background: rgba(100,116,139,0.08); }

/* 日期 */
.news-date {
  font-size: 0.75rem;
  color: #bbb;
  margin-left: auto;
}

/* 空状态 */
.news-empty {
  text-align: center;
  padding: 80px 40px;
  color: #bbb;
  font-size: 1rem;
}
.news-empty-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 12px;
}

/* ========== 响应式 ========== */
@media screen and (max-width: 768px) {
  #news-container {
    margin-top: 0;
  }
  .news-body {
    padding: 14px 16px;
  }
  .news-title {
    font-size: 0.95rem;
  }
  .news-desc {
    font-size: 0.82rem;
    -webkit-line-clamp: 2;
  }
  .news-date {
    margin-left: 0;
  }
}