@charset "utf-8";

/**
 * 文章详情页头部样式
 * 参考 TechCrunch 布局设计
 */

/* 文章头部容器 */
.post-detail-header {
  display: flex;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
  padding: var(--space-6);
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
}

/* 左侧题图 - 正方形 */
.post-header-image {
  flex-shrink: 0;
  width: 300px;
  height: 300px;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.post-header-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 右侧内容区 */
.post-header-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
}

/* 顶部区域 - 标签和分享 */
.post-header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

/* 标签 */
.post-header-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.post-header-tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  transition: all var(--duration-fast) ease;
}

.post-header-tag:hover {
  background-color: var(--primary-blue);
  color: var(--text-white);
}

/* 分享图标 */
.post-header-share {
  display: flex;
  gap: var(--space-2);
  flex-shrink: 0;
}

.share-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) ease;
  text-decoration: none;
}

.share-icon:hover {
  background-color: var(--primary-blue);
  color: var(--text-white);
  transform: translateY(-2px);
}

.share-icon svg {
  width: 18px;
  height: 18px;
}

/* 标题 - 占据右侧约1/3高度 */
.post-header-title {
  font-family: var(--font-family);
  font-size: 2.5rem;
  font-weight: var(--font-weight-title);
  line-height: 1.2;
  color: var(--text-primary);
  margin: var(--space-4) 0;
  flex: 1;
  display: flex;
  align-items: center;
}

/* 底部元数据 */
.post-header-meta {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.post-header-author {
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.post-header-date {
  color: var(--text-muted);
}

/* 响应式 - 平板 */
@media screen and (max-width: 1024px) {
  .post-header-image {
    width: 250px;
    height: 250px;
  }
  
  .post-header-title {
    font-size: 2rem;
  }
}

/* 响应式 - 竖屏/移动端 */
@media screen and (max-width: 768px) {
  .post-detail-header {
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-4);
  }
  
  .post-header-image {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
  }
  
  .post-header-top {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .post-header-share {
    justify-content: flex-end;
  }
  
  .post-header-title {
    font-size: 1.75rem;
    margin: var(--space-3) 0;
  }
  
  .post-header-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
  .post-detail-header {
    background-color: #2d3748;
  }
  
  .post-header-tag {
    background-color: #1a202c;
    color: #cbd5e0;
  }
  
  .post-header-tag:hover {
    background-color: var(--primary-blue-light);
    color: #f7fafc;
  }
  
  .share-icon {
    background-color: #1a202c;
    color: #cbd5e0;
  }
  
  .share-icon:hover {
    background-color: var(--primary-blue-light);
    color: #f7fafc;
  }
  
  .post-header-title {
    color: #f7fafc;
  }
  
  .post-header-author {
    color: #e2e8f0;
  }
  
  .post-header-date {
    color: #a0aec0;
  }
}