/**
 * 相关文章组件 - 双栏版样式
 * 
 * 基于主题内置相关文章样式，添加双栏布局支持
 * 所有字体大小、颜色与内置组件保持一致
 */

/* ============================================================
   基础样式（与内置组件完全一致）
   ============================================================ */

.app-related-articles-double .related-articles {
  container-type: inline-size;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  padding: 24px;
  margin-bottom: 14px;
}

.app-related-articles-double .related-articles__title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 16px;
}

.app-related-articles-double .related-articles__title-icon {
  display: inline-flex;
  align-items: center;
}

.app-related-articles-double .related-articles__item {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
}

.app-related-articles-double .related-articles__name {
  font-size: 14px;
  color: var(--text-content);
  line-height: 1.5;
  transition: color 0.2s;
}

.app-related-articles-double .related-articles__excerpt {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.6;
  margin: 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
}

.app-related-articles-double .related-articles__date {
  font-size: 12px;
  color: var(--text-muted);
}

.app-related-articles-double .related-articles__empty {
  text-align: center;
  padding: 24px 0;
  font-size: 14px;
  color: var(--text-muted);
}

/* ============================================================
   图文混排样式（双栏版）
   ============================================================ */

.app-related-articles-double .related-articles--image_text .related-articles__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.app-related-articles-double .related-articles--image_text .related-articles__item {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
  border-bottom: 1px solid var(--border-secondary);
}

.app-related-articles-double .related-articles--image_text .related-articles__item:nth-last-child(-n+2) {
  border-bottom: none;
}

.app-related-articles-double .related-articles--image_text .related-articles__item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.app-related-articles-double .related-articles--image_text .related-articles__item:hover .related-articles__name {
  color: var(--theme-color, #4f46e5);
}

.app-related-articles-double .related-articles--image_text .related-articles__thumb {
  width: 100px;
  height: 75px;
  flex-shrink: 0;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  background: var(--bg-hover);
}

.app-related-articles-double .related-articles--image_text .related-articles__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-related-articles-double .related-articles--image_text .related-articles__info {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
}

.app-related-articles-double .related-articles--image_text .related-articles__name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-content);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-related-articles-double .related-articles--image_text .related-articles__excerpt {
  font-size: 12px;
  color: var(--text-tertiary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 4px;
}

.app-related-articles-double .related-articles--image_text .related-articles__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: auto;
}

/* ============================================================
   纯文本样式（双栏版）
   ============================================================ */

.app-related-articles-double .related-articles--text .related-articles__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  row-gap: 12px;
  column-gap: 12px;
}

.app-related-articles-double .related-articles--text .related-articles__item {
  display: flex;
  align-items: center;
  padding: 10px 0;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  border-bottom: 1px solid var(--border-secondary);
  min-width: 0;
}

.app-related-articles-double .related-articles--text .related-articles__item:nth-last-child(-n+2) {
  border-bottom: none;
}

.app-related-articles-double .related-articles--text .related-articles__item:hover .related-articles__name {
  color: var(--theme-color, #3b82f6);
}

.app-related-articles-double .related-articles--text .related-articles__info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  min-width: 0;
  gap: 12px;
}

.app-related-articles-double .related-articles--text .related-articles__name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  display: block;
}

.app-related-articles-double .related-articles--text .related-articles__item::before {
  content: '·';
  color: var(--text-muted);
  font-weight: bold;
  font-size: 16px;
  line-height: 1;
  margin-right: 6px;
  flex-shrink: 0;
}

.app-related-articles-double .related-articles--text .related-articles__date {
  flex-shrink: 0;
  font-size: 12px;
}

/* ============================================================
   卡片样式（与内置组件一致）
   ============================================================ */

.app-related-articles-double .related-articles--card .related-articles__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.app-related-articles-double .related-articles--card .related-articles__item {
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-secondary);
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

.app-related-articles-double .related-articles--card .related-articles__item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border-color: var(--border-input);
}

.app-related-articles-double .related-articles--card .related-articles__thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.app-related-articles-double .related-articles--card .related-articles__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.app-related-articles-double .related-articles--card .related-articles__item:hover .related-articles__thumb img {
  transform: scale(1.05);
}

.app-related-articles-double .related-articles--card .related-articles__info {
  padding: 10px 12px;
}

.app-related-articles-double .related-articles--card .related-articles__name {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
}

.app-related-articles-double .related-articles--card .related-articles__date {
  font-size: 12px;
}

/* ============================================================
   组件标题（与内置组件一致）
   ============================================================ */

.app-related-articles-double .component-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 16px;
}

.app-related-articles-double .component-title .component-title-icon {
  display: inline-flex;
  align-items: center;
  width: 20px;
  height: 20px;
  color: var(--theme-color, #4f46e5);
}

/* ============================================================
   骨架屏样式
   ============================================================ */

.app-related-articles-double .related-skeleton {
  container-type: inline-size;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  padding: 24px;
  margin-bottom: 14px;
}

.app-related-articles-double .related-skeleton__title {
  height: 24px;
  width: 120px;
  background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-hover) 50%, var(--bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 4px;
  margin-bottom: 16px;
}

.app-related-articles-double .related-skeleton--image_text .related-skeleton__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.app-related-articles-double .related-skeleton--image_text .related-skeleton__item {
  display: flex;
  gap: 12px;
  padding: 12px;
}

.app-related-articles-double .related-skeleton--image_text .related-skeleton__thumb {
  width: 100px;
  height: 75px;
  flex-shrink: 0;
  border-radius: var(--border-radius-sm);
  background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-hover) 50%, var(--bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.app-related-articles-double .related-skeleton--image_text .related-skeleton__info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.app-related-articles-double .related-skeleton--text .related-skeleton__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.app-related-articles-double .related-skeleton--text .related-skeleton__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
}

.app-related-articles-double .related-skeleton--card .related-skeleton__list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.app-related-articles-double .related-skeleton--card .related-skeleton__card {
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-secondary);
}

.app-related-articles-double .related-skeleton--card .related-skeleton__thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-hover) 50%, var(--bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

.app-related-articles-double .related-skeleton--card .related-skeleton__info {
  padding: 10px 12px;
}

.app-related-articles-double .related-skeleton__line {
  height: 14px;
  background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-hover) 50%, var(--bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 3px;
}

.app-related-articles-double .related-skeleton__line--short {
  width: 60px;
}

.app-related-articles-double .related-skeleton__line--medium {
  width: 80%;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* ============================================================
   响应式适配
   ============================================================ */

@media (max-width: 768px) {
  .app-related-articles-double .related-articles {
    padding: 16px;
  }
  
  /* 双栏布局在移动端变为单列 */
  .app-related-articles-double .related-articles--image_text .related-articles__list,
  .app-related-articles-double .related-skeleton--image_text .related-skeleton__list,
  .app-related-articles-double .related-articles--text .related-articles__list,
  .app-related-articles-double .related-skeleton--text .related-skeleton__list {
    grid-template-columns: 1fr;
  }
  
  .app-related-articles-double .related-articles--image_text .related-articles__thumb {
    width: 90px;
    height: 68px;
  }
  
  .app-related-articles-double .related-articles--image_text .related-articles__name {
    font-size: 14px;
  }
  
  .app-related-articles-double .related-articles--image_text .related-articles__excerpt {
    display: none;
  }
  
  /* 卡片样式移动端 */
  .app-related-articles-double .related-articles--card .related-articles__list,
  .app-related-articles-double .related-skeleton--card .related-skeleton__list {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* 骨架屏移动端 */
  .app-related-articles-double .related-skeleton--image_text .related-skeleton__thumb {
    width: 90px;
    height: 68px;
  }
}

@media (max-width: 480px) {
  /* 卡片样式小屏幕 */
  .app-related-articles-double .related-articles--card .related-articles__list,
  .app-related-articles-double .related-skeleton--card .related-skeleton__list {
    grid-template-columns: 1fr;
  }
}