/*!
 * 优化的文章页面样式
 * 仅包含 article.html 页面特有的样式
 * 通用样式已整合到 style.css 中
 */

/* 面包屑导航样式 */
.breadcrumb {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 8px;
  padding: 0.75rem 1.25rem;
  margin-bottom: 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  border: 1px solid #dee2e6;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  font-size: 0.9rem;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  color: var(--primary-color);
  font-weight: bold;
  font-size: 1.1rem;
  margin: 0 0.5rem;
}

.breadcrumb-item a {
  color: #6c757d;
  text-decoration: none;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.breadcrumb-item a:hover {
  color: var(--primary-color);
  text-decoration: none;
}

.breadcrumb-item.active {
  color: #495057;
  font-weight: 500;
}

.breadcrumb-item i {
  font-size: 0.9rem;
}

/* 文章标题区域 */
.article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid #e9ecef;
}

.article-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: #2c3e50;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  color: #6c757d;
}

.article-meta .publish-date {
  background: #f8f9fa;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-weight: 500;
}

.article-featured-image {
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  margin-bottom: 2rem;
}

.article-featured-image:hover {
  transform: translateY(-2px);
}

/* 文章内容区域 */
.article-content {
  line-height: 1.8;
  font-size: 1.1rem;
  color: #2c3e50;
  max-width: none;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 600;
  line-height: 1.3;
  color: #2c3e50;
  position: relative;
}

.article-content h2 {
  font-size: 1.8rem;
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
  margin-left: -1rem;
}

.article-content h3 {
  font-size: 1.5rem;
  color: #495057;
}

.article-content h4 {
  font-size: 1.3rem;
  color: #6c757d;
}

.article-content p {
  margin-bottom: 1.5rem;
  text-align: justify;
  text-indent: 2em;
}

.article-content p:first-of-type {
  font-size: 1.15rem;
  font-weight: 500;
  color: #495057;
  text-indent: 0;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin: 1.5rem 0;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.article-content ul,
.article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
  line-height: 1.7;
}

.article-content li {
  margin-bottom: 0.5rem;
  position: relative;
}

.article-content ul li::marker {
  color: var(--primary-color);
}

.article-content blockquote {
  border-left: 4px solid var(--primary-color);
  background: #f8f9fa;
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: #495057;
}

.article-content code {
  background: #f1f3f4;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9em;
  color: #e74c3c;
}

.article-content pre {
  background: #2d3748;
  color: #e2e8f0;
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

.article-content pre code {
  background: none;
  color: inherit;
  padding: 0;
}

/* 侧边栏优化 */
.sidebar {
  background: #f8f9fa;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 2rem;
}

.sidebar h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-color);
}

.sidebar .list-group-item {
  border: none;
  background: white;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sidebar .list-group-item:hover {
  transform: translateX(5px);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
}

.sidebar .list-group-item a {
  color: #495057;
  font-weight: 500;
  text-decoration: none;
  display: block;
  padding: 0.75rem 1rem;
}

.sidebar .list-group-item a:hover {
  color: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 991.98px) {
  .sidebar {
    position: static;
    margin-top: 2rem;
  }
}

@media (max-width: 767.98px) {
  .container {
    padding-right: 15px;
    padding-left: 15px;
  }
  
  .row {
    margin-right: -15px;
    margin-left: -15px;
  }
  
  .col-md-1,
  .col-md-3,
  .col-md-8 {
    padding-right: 15px;
    padding-left: 15px;
  }
  
  .mt-5 {
    margin-top: 1.5rem !important;
  }
  
  /* 面包屑导航响应式 */
  .breadcrumb {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
  
  .breadcrumb-item {
    font-size: 0.85rem;
  }
  
  .breadcrumb-item + .breadcrumb-item::before {
    font-size: 1rem;
    margin: 0 0.25rem;
  }
  
  .breadcrumb-item a {
    gap: 0.2rem;
  }
  
  .breadcrumb-item i {
    font-size: 0.8rem;
  }
  
  .article-header h1 {
    font-size: 2rem;
  }
  
  .article-content {
    font-size: 1rem;
  }
  
  .article-content h2 {
    font-size: 1.5rem;
    margin-left: 0;
    padding-left: 0.5rem;
  }
  
  .article-content h3 {
    font-size: 1.3rem;
  }
  
  .article-content h4 {
    font-size: 1.1rem;
  }
  
  .article-content p {
    text-indent: 1.5em;
  }
  
  .article-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .article-featured-image {
    margin-bottom: 1.5rem;
  }
  
  .sidebar {
    margin-top: 1.5rem;
    padding: 1rem;
  }
}

@media (max-width: 575.98px) {
  /* 面包屑导航小屏幕优化 */
  .breadcrumb {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }
  
  .breadcrumb-item {
    font-size: 0.8rem;
  }
  
  .breadcrumb-item + .breadcrumb-item::before {
    font-size: 0.9rem;
    margin: 0 0.2rem;
  }
  
  .breadcrumb-item a {
    gap: 0.15rem;
  }
  
  .breadcrumb-item i {
    font-size: 0.75rem;
  }
  
  .article-header h1 {
    font-size: 1.75rem;
  }
  
  .article-content {
    font-size: 0.95rem;
  }
  
  .article-content h2 {
    font-size: 1.3rem;
  }
  
  .article-content h3 {
    font-size: 1.2rem;
  }
  
  .article-content p {
    text-indent: 1em;
  }
}