/* ==========================================================================
   新闻列表页 & 详情页专用样式
   继承设计系统：直角、无阴影、CSS变量驱动
   ========================================================================== */

/* ---------- 新闻页面布局 ---------- */
.news-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 20px;
  min-height: calc(100vh - 300px); /* 最小高度，确保页脚不下沉 */
}

/* ---------- 侧边栏 ---------- */
.news-sidebar {
  width: 220px;
  flex-shrink: 0;
}

.sidebar-menu {
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.sidebar-menu-head {
  padding: 16px;
  background-color: var(--color-primary);
  color: #fff;
  font-size: var(--fs-h2);
  line-height: var(--lh-h2);
  font-weight: 500;
  text-align: center;
}

.sidebar-menu-list {
  list-style: none;
}

.sidebar-menu-item {
  border-bottom: 1px solid var(--color-border);
}

.sidebar-menu-item:last-child {
  border-bottom: 0;
}

.sidebar-menu-item a {
  display: block;
  padding: 14px 20px;
  font-size: var(--fs-h4);
  line-height: var(--lh-h4);
  color: var(--color-text-1);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.sidebar-menu-item a:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

.sidebar-menu-item.active a {
  background-color: var(--color-highlight);
  color: #fff;
}

/* ---------- 面包屑导航 ---------- */
.breadcrumb {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: var(--fs-small);
  line-height: var(--lh-small);
  color: var(--color-text-3);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb-item::after {
  content: ">";
  color: var(--color-text-3);
}

.breadcrumb-item:last-child::after {
  display: none;
}

.breadcrumb-item a {
  color: var(--color-text-3);
  transition: color 0.2s ease;
}

.breadcrumb-item a:hover {
  color: var(--color-primary);
}

.breadcrumb-item.active {
  color: var(--color-text-2);
}

/* ---------- 主内容区 ---------- */
.news-main {
  min-width: 0; /* 防止grid溢出 */
  background-color: var(--color-bg);
}

/* ---------- 新闻列表页样式 ---------- */
.news-list-page {
  /* 容器样式 */
}

.news-list-header {
  padding: 24px 0 20px;
  text-align: center;
  border-bottom: 2px solid var(--color-primary);
}

.news-list-header h1 {
  font-size: var(--fs-h1);
  line-height: var(--lh-h1);
  font-weight: 500;
  color: var(--color-text-1);
  position: relative;
  display: inline-block;
}

.news-list-header h1::after {
  content: "";
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--color-highlight);
  margin: 8px auto 0;
}

.news-list-container {
  margin-bottom: 0;
  padding: 8px 0;
}

.news-list-container .news-list {
  display: block;
  list-style: none;
}

.news-list-container .news-list-item {
  display: flex;
  align-items: center;
  padding: 14px 12px;
  border-bottom: 1px dashed var(--color-border);
  transition: background-color 0.2s ease;
  position: relative;
}

.news-list-container .news-list-item:last-child {
  border-bottom: 0;
}

.news-list-container .news-list-item::before {
  content: "";
  flex-shrink: 0;
  width: 4px;
  height: 4px;
  background-color: var(--color-primary);
  margin-right: 12px;
}

.news-list-container .news-list-item:hover {
  background-color: var(--color-bg-light);
}

.news-list-container .news-list-item:hover::before {
  background-color: var(--color-highlight);
}

.news-list-container .news-list-item .title {
  flex: 1;
  min-width: 0;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text-1);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: color 0.2s ease;
}

.news-list-container .news-list-item:hover .title {
  color: var(--color-primary);
}

.news-list-container .news-list-item .date {
  flex-shrink: 0;
  margin-left: 20px;
  font-size: var(--fs-small);
  line-height: var(--lh-small);
  color: var(--color-text-3);
  font-family: Arial, sans-serif;
}

.news-list-container .news-list-item .date::before {
  content: "[";
  margin-right: 1px;
}

.news-list-container .news-list-item .date::after {
  content: "]";
  margin-left: 1px;
}

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 24px 0 8px;
  border-top: 1px solid var(--color-border);
  margin-top: 16px;
}

.pagination-info {
  font-size: var(--fs-small);
  color: var(--color-text-3);
  margin-right: 8px;
  font-family: Arial, sans-serif;
}

.pagination-btn {
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text-2);
  font-size: var(--fs-small);
  line-height: var(--lh-small);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  font-family: Arial, sans-serif;
}

.pagination-btn:hover:not(.disabled):not(.active) {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.pagination-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination-btn.disabled:hover {
  border-color: var(--color-border);
  color: var(--color-text-2);
  background-color: var(--color-bg);
}

.pagination-jump {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  font-size: var(--fs-small);
  color: var(--color-text-3);
}

.pagination-jump input {
  width: 36px;
  height: 24px;
  text-align: center;
  border: 1px solid var(--color-border);
  font-size: var(--fs-small);
  font-family: Arial, sans-serif;
}

.pagination-jump input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ---------- 新闻详情页样式 ---------- */
.news-detail-page {
  padding: 0 20px 32px;
}

.article-header {
  padding: 24px 0 20px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
}

.article-title {
  font-size: var(--fs-h1);
  line-height: var(--lh-h1);
  font-weight: 500;
  color: var(--color-text-1);
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: var(--fs-small);
  line-height: var(--lh-small);
  color: var(--color-text-3);
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
}

.article-meta-sep {
  color: var(--color-border);
  margin: 0 4px;
}

.article-content {
  padding: 24px 0;
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text-2);
}

.article-content p {
  margin-bottom: 16px;
  text-indent: 2em;
}

.article-content strong {
  color: var(--color-text-1);
}

.article-content img {
  max-width: 100%;
  height: auto;
  margin: 16px auto;
  display: block;
}

.article-content h2 {
  font-size: var(--fs-h2);
  line-height: var(--lh-h2);
  font-weight: 500;
  color: var(--color-text-1);
  margin: 24px 0 12px;
  text-indent: 0;
}

.article-content h3 {
  font-size: var(--fs-h3);
  line-height: var(--lh-h3);
  font-weight: 500;
  color: var(--color-text-1);
  margin: 24px 0 12px;
  text-indent: 0;
  text-align: center;
  border-bottom: 1px dashed var(--color-border);
  padding-bottom: 8px;
}

/* 文章配图区 */
.article-images {
  padding: 0 0 24px;
}

.article-images img {
  max-width: 100%;
  height: auto;
  margin: 12px auto;
  display: block;
}

/* 文章底部操作 */
.article-footer {
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  margin-top: 0;
}

.article-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.article-nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-h4);
  line-height: var(--lh-h4);
  color: var(--color-text-2);
}

.article-nav-item .label {
  flex-shrink: 0;
  color: var(--color-text-3);
}

.article-nav-item a {
  color: var(--color-text-2);
  transition: color 0.2s ease;
}

.article-nav-item a:hover {
  color: var(--color-primary);
}

/* ========== 响应式布局 ========== */
@media (max-width: 980px) {
  .news-layout {
    grid-template-columns: 1fr;
  }

  .news-sidebar {
    width: 100%;
    margin-bottom: 16px;
  }

  /* 侧边栏改为可折叠下拉 */
  .sidebar-menu {
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    position: relative;
  }

  /* 头部作为点击展开的按钮 */
  .sidebar-menu-head {
    padding: 12px 16px;
    background-color: var(--color-primary);
    color: #fff;
    font-size: var(--fs-h4);
    line-height: var(--lh-h4);
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    position: relative;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  /* 添加下拉箭头 */
  .sidebar-menu-head::after {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 6px solid #fff;
    transition: transform 0.3s ease;
  }

  .sidebar-menu.open .sidebar-menu-head::after {
    transform: rotate(180deg);
  }

  /* 列表默认隐藏 */
  .sidebar-menu-list {
    display: none;
    list-style: none;
  }

  /* 展开时显示 */
  .sidebar-menu.open .sidebar-menu-list {
    display: block;
  }

  .sidebar-menu-item {
    border-bottom: 1px solid var(--color-border);
  }

  .sidebar-menu-item:last-child {
    border-bottom: 0;
  }

  .sidebar-menu-item a {
    padding: 12px 16px;
    font-size: var(--fs-small);
    text-align: left;
  }

  .sidebar-menu-item.active a {
    background-color: var(--color-highlight);
    color: #fff;
  }

  .news-list-container .news-list-item {
    flex-direction: row;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 8px;
  }

  .news-list-container .news-list-item .date {
    margin-left: 0;
    flex-shrink: 0;
    font-size: 12px;
  }

  .news-list-container .news-list-item .date::before,
  .news-list-container .news-list-item .date::after {
    display: none;
  }

  .article-meta {
    flex-wrap: wrap;
    gap: 12px;
  }

  .article-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .pagination {
    flex-wrap: wrap;
  }

  /* 详情页内容区padding调整 */
  .news-detail-page {
    padding: 0 12px 24px;
  }

  .article-content {
    padding: 16px 0;
  }
}

@media (max-width: 640px) {
  .news-list-header h1 {
    font-size: var(--fs-h2);
    line-height: var(--lh-h2);
  }

  .article-title {
    font-size: var(--fs-h2);
    line-height: 1.3;
  }

  .breadcrumb-list {
    font-size: 12px;
    flex-wrap: wrap;
  }

  .pagination-btn {
    padding: 4px 8px;
  }

  /* 列表项优化 */
  .news-list-container .news-list-item {
    padding: 10px 4px;
    align-items: center;
  }

  .news-list-container .news-list-item .title {
    font-size: var(--fs-small);
    white-space: normal;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .news-list-container .news-list-item .date {
    font-size: 11px;
    flex-shrink: 0;
    white-space: nowrap;
  }

  /* 详情页优化 */
  .news-detail-page {
    padding: 0 4px 16px;
  }

  .article-header {
    padding: 16px 0;
  }

  .article-meta {
    gap: 8px;
    font-size: 12px;
  }

  .article-meta-sep {
    display: none;
  }

  .article-content {
    padding: 12px 0;
    font-size: var(--fs-small);
  }

  .article-content p {
    margin-bottom: 12px;
  }

  /* 文章底部导航优化 */
  .article-nav {
    gap: 8px;
  }

  .article-nav-item {
    font-size: var(--fs-small);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  /* 分页简化 */
  .pagination {
    padding: 16px 0 4px;
    gap: 4px;
  }

  .pagination-jump {
    display: none;
  }

  /* 侧边栏小屏优化 */
  .sidebar-menu-head {
    padding: 10px 12px;
    font-size: var(--fs-small);
  }

  .sidebar-menu-item a {
    padding: 10px 12px;
    font-size: 12px;
  }
}