/* 文章详情页样式 - 完全重写版本 */

/* ==================== 全局修复 ==================== */
* {
  box-sizing: border-box;
}

/* Material Icons 全局修复 - 防止偏上 */
.material-icons,
.material-icons-outlined {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 1 !important;
}

/* ==================== 顶部导航栏 ==================== */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
}

@media (prefers-color-scheme: dark) {
  .top-nav {
    background: rgba(26, 26, 26, 0.95);
  }
}

.nav-container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 100%;
}

.back-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.back-btn:hover {
  background: var(--bg-secondary);
}

.back-btn .material-icons {
  font-size: 24px;
}

.nav-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.5;
}

/* ==================== 主内容区 ==================== */
.main-wrapper {
  min-height: 100vh;
  background: var(--bg-secondary);
  padding: 80px 0 64px;
}

.content-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ==================== 文章卡片 ==================== */
.article-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

/* ==================== 作者信息区 ==================== */
.author-section {
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
}

.author-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.author-avatar-wrapper {
  position: relative;
  flex-shrink: 0;
}

.author-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  object-fit: cover;
  display: block;
}

.avatar-ring {
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  opacity: 0.3;
  z-index: -1;
}

.author-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.author-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-height: 24px;
}

.author-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 24px;
  height: 24px;
  display: flex;
  align-items: center;
}

/* 元信息标签 */
.meta-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  min-height: 20px;
}

.meta-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 20px;
  height: 20px;
}

.meta-tag .material-icons {
  font-size: 16px;
  opacity: 0.7;
}

/* ==================== 文章标题区 ==================== */
.article-title-section {
  padding: 24px;
  border-bottom: 1px solid var(--border-color);
}

.article-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-primary);
  margin: 0 0 16px 0;
  letter-spacing: -0.5px;
}

/* 标签云 */
.tags-cloud {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
  cursor: pointer;
  line-height: 1.5;
}

.tag:hover {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ==================== 文章内容 ==================== */
.article-content {
  padding: 24px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
  word-wrap: break-word;
}

.article-content p {
  margin: 0 0 16px 0;
  line-height: 1.8;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 16px 0;
}

.article-content a {
  color: #06b6d4;
  text-decoration: none;
  transition: var(--transition);
}

.article-content a:hover {
  color: #0891b2;
  text-decoration: underline;
}

/* ==================== 图片画廊 ==================== */
.images-gallery {
  padding: 24px;
  border-top: 1px solid var(--border-color);
}

.gallery-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 16px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.5;
}

.gallery-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  border-radius: var(--radius-sm);
}



/* 图片网格 */
.images-grid {
  display: grid;
  gap: 12px;
  width: 100%;
}

/* 1张图片 - 独立展示 */
.images-grid.grid-1 {
  grid-template-columns: 1fr;
}

.images-grid.grid-1 .image-item {
  aspect-ratio: 16/9;
  max-height: 400px;
}

/* 2张图片 - 2宫格 */
.images-grid.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.images-grid.grid-2 .image-item {
  aspect-ratio: 1/1;
}

/* 3张图片 - 9宫格（3x3，只显示3张） */
.images-grid.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.images-grid.grid-3 .image-item {
  aspect-ratio: 1/1;
}

/* 4张图片 - 4宫格（2x2） */
.images-grid.grid-4 {
  grid-template-columns: repeat(2, 1fr);
}

.images-grid.grid-4 .image-item {
  aspect-ratio: 1/1;
}

/* 5张及以上图片 - 9宫格（3x3） */
.images-grid.grid-5,
.images-grid.grid-6,
.images-grid.grid-7,
.images-grid.grid-8,
.images-grid.grid-9,
.images-grid.grid-more {
  grid-template-columns: repeat(3, 1fr);
}

.images-grid.grid-5 .image-item,
.images-grid.grid-6 .image-item,
.images-grid.grid-7 .image-item,
.images-grid.grid-8 .image-item,
.images-grid.grid-9 .image-item,
.images-grid.grid-more .image-item {
  aspect-ratio: 1/1;
}

/* 图片项 */
.image-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  cursor: pointer;
  background: var(--bg-secondary);
}

.article-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
  display: block;
}

.image-item:hover .article-image {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}

.image-item:hover .image-overlay {
  opacity: 1;
}

.image-overlay .material-icons {
  font-size: 48px;
  color: white;
}

/* ==================== 互动按钮区 ==================== */
.action-bar {
  padding: 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.action-btn {
  flex: 1;
  min-width: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  line-height: 1.5;
}

.action-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  opacity: 0;
  transition: var(--transition);
}

.action-btn:hover {
  border-color: transparent;
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.action-btn:hover::before {
  opacity: 1;
}

.action-btn .material-icons {
  font-size: 20px;
  position: relative;
  z-index: 1;
}

.action-btn-text,
.action-btn-count {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
}

.action-btn-count {
  font-weight: 600;
}

/* ==================== 评论区 ==================== */
.comments-section {
  margin-top: 24px;
  padding: 28px 24px;
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.comments-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.comments-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  line-height: 1.5;
  margin: 0;
}

.comments-count {
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
}

/* 评论列表 */
.comments-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 评论项 */
.comment-item {
  padding: 20px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.comment-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: transparent;
}

.comment-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.comment-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
  display: block;
}

.comment-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
}

.comment-user-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-height: 24px;
}

.comment-username {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 24px;
  height: 24px;
  display: flex;
  align-items: center;
}

.comment-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 20px;
  height: 20px;
}

.comment-meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 20px;
}

.comment-meta-item .material-icons {
  font-size: 14px;
}

.comment-content {
  margin: 12px 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-primary);
  word-wrap: break-word;
}

.comment-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.comment-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  line-height: 1.5;
}

.comment-action-btn:hover {
  background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
  color: white;
  transform: translateY(-1px);
}

.comment-action-btn .material-icons {
  font-size: 16px;
}

/* 回复区域 */
.replies-section {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color);
}


/* 暂无评论 */
.no-comments {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-tertiary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.no-comments .material-icons {
  font-size: 64px;
  opacity: 0.3;
  margin-bottom: 16px;
  display: block;
}

.no-comments-text {
  font-size: 15px;
  line-height: 1.6;
}

/* 加载更多按钮 */
.load-more-btn {
  display: block;
  width: 100%;
  padding: 12px;
  background: var(--bg-tertiary);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  line-height: 1.5;
}

.load-more-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

/* ==================== 图片查看器 ==================== */
.image-viewer-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
}

.image-viewer-modal.active {
  display: flex;
}

.viewer-content {
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-image {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  user-select: none;
}

.viewer-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.viewer-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.viewer-close .material-icons {
  font-size: 28px;
  color: white;
}

.viewer-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.viewer-nav:hover {
  background: rgba(255, 255, 255, 0.2);
}

.viewer-nav.disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.viewer-nav .material-icons {
  font-size: 28px;
  color: white;
}

.viewer-nav-prev {
  left: 20px;
}

.viewer-nav-next {
  right: 20px;
}

.viewer-counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  color: white;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
}

.viewer-actions {
  position: absolute;
  top: 20px;
  left: 20px;
  display: flex;
  gap: 12px;
  z-index: 10;
}

.viewer-action-btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-action-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

.viewer-action-btn .material-icons {
  font-size: 24px;
  color: white;
}


/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
  /* 主内容区 */
  .main-wrapper {
    padding: 68px 0 48px;
  }

  .content-container {
    padding: 0 12px;
  }

  /* 作者信息区 */
  .author-section {
    padding: 20px 16px;
  }

  .author-header {
    margin-bottom: 12px;
  }

  .author-avatar {
    width: 48px;
    height: 48px;
  }

  .author-name {
    font-size: 16px;
  }

  .meta-tag {
    font-size: 12px;
  }

  /* 文章标题区 */
  .article-title-section {
    padding: 20px 16px;
  }

  .article-title {
    font-size: 24px;
    margin-bottom: 12px;
  }

  .tag {
    padding: 6px 12px;
    font-size: 12px;
  }

  /* 文章内容 */
  .article-content {
    padding: 20px 16px;
    font-size: 15px;
  }

  /* 图片画廊 */
  .images-gallery {
    padding: 20px 16px;
  }

  .gallery-title {
    font-size: 16px;
    margin-bottom: 12px;
  }

  .images-grid {
    gap: 8px;
  }

  /* 互动按钮 */
  .action-bar {
    padding: 20px 16px;
    gap: 8px;
  }

  .action-btn {
    min-width: 100px;
    padding: 12px 16px;
    font-size: 14px;
  }

  .action-btn .material-icons {
    font-size: 18px;
  }

  /* 评论区 */
  .comments-section {
    margin-top: 20px;
    padding: 24px 16px;
  }

  .comments-header {
    margin-bottom: 16px;
    padding-bottom: 12px;
  }

  .comments-title {
    font-size: 18px;
  }

  .comments-count {
    font-size: 14px;
  }

  .comment-item {
    padding: 16px;
  }

  .comment-avatar {
    width: 40px;
    height: 40px;
  }

  .comment-username {
    font-size: 14px;
  }

  .comment-meta {
    font-size: 12px;
  }

  .comment-content {
    font-size: 14px;
  }

  .comment-action-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  /* 图片查看器 */
  .viewer-close,
  .viewer-nav,
  .viewer-action-btn {
    width: 40px;
    height: 40px;
  }

  .viewer-close .material-icons,
  .viewer-nav .material-icons {
    font-size: 24px;
  }

  .viewer-action-btn .material-icons {
    font-size: 20px;
  }

  .viewer-nav-prev {
    left: 10px;
  }

  .viewer-nav-next {
    right: 10px;
  }

  .viewer-counter {
    bottom: 10px;
    padding: 8px 16px;
    font-size: 12px;
  }

  .viewer-actions {
    top: 10px;
    left: 10px;
    gap: 8px;
  }
}

/* 桌面端优化 */
@media (min-width: 769px) {
  .content-container {
    padding: 0 24px;
  }

  .article-card:hover {
    box-shadow: var(--shadow-md);
  }

  .comments-section:hover {
    box-shadow: var(--shadow-md);
  }
}

/* ==================== Dark Mode - 深色模式适配 ==================== */
@media (prefers-color-scheme: dark) {
  :root {
    /* Background Colors for Dark Mode */
    --bg-primary: #1a1c1e;
    --bg-secondary: #1e2022;
    --bg-tertiary: #282a2d;

    /* Text Colors for Dark Mode */
    --text-primary: #e2e2e6;
    --text-secondary: #c3c6cf;
    --text-tertiary: #8d9199;

    /* Border Colors for Dark Mode */
    --border-color: #43474e;
    --border-hover: #5f6368;
  }

  .main-wrapper {
    background: var(--bg-secondary);
  }

  .article-card,
  .comments-section {
    background: var(--bg-primary);
  }

  .author-section,
  .article-title-section,
  .article-content,
  .images-gallery,
  .action-bar {
    border-color: var(--border-color);
  }

  .tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
  }

  .comment-item {
    background: var(--bg-secondary);
    border-color: var(--border-color);
  }

  .comment-action-btn {
    background: var(--bg-primary);
  }

  .load-more-btn {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
  }

  .image-item {
    background: var(--bg-secondary);
  }

  .viewer-close,
  .viewer-nav,
  .viewer-action-btn,
  .viewer-counter {
    background: rgba(0, 0, 0, 0.8);
  }
}