:root {
    --primary-yellow: #FFD100;
    --dark-yellow: #FFB800;
    --light-yellow: #FFFBEB;
    --orange: #FF9500;
    --text-dark: #2D3436;
    --radius-lg: 20px;
    --radius-md: 15px;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --orange-gradient: linear-gradient(135deg, #FFD100 0%, #FF9500 100%);
    --transition-base: all 0.3s ease;
    --red-heart: #ff4d6d; /* 点赞红色 */
}
body {
    font-family: 'Noto Sans SC', sans-serif;
    color: #333;
    line-height: 1.6;
    background-image: url('beijing.jpg'); 
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    background-color: var(--light-yellow);
    border: 15px solid var(--light-yellow);
    min-height: 100vh;
    box-sizing: border-box;
    margin: 0;
    padding-top: 80px; /* 给导航栏留出空间 */
}
/* 半透明遮罩（增强背景层次感） */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.85); /* 背景透明度 */
    z-index: -1;
}
/* 导航栏样式增强 */
.navbar {
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 999;
    padding: 0.5rem 1rem;
}
.navbar-container {
    display: flex;
    justify-content: space-between; /* Logo 左，按钮组右 */
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}
.navbar-brand {
    color: var(--primary-yellow) !important;
    font-weight: 900;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-base);
    margin-right: 2rem; /* Logo 和导航按钮之间的间距 */
}
.navbar-brand:hover {
    transform: scale(1.05);
}
/* 导航按钮容器 - 放在 Logo 旁边 */
.nav-buttons-group {
    display: flex;
    align-items: center;
    gap: 0.5rem; /* 按钮之间的间距 */
}
.nav-link {
    color: #333 !important;
    font-weight: 500;
    position: relative;
    transition: var(--transition-base);
    padding: 0.5rem 1rem !important;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-yellow);
    transition: var(--transition-base);
}
.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}
.nav-btn {
    background: var(--orange-gradient);
    color: white !important;
    border-radius: 20px;
    padding: 6px 18px !important;
    box-shadow: 0 4px 10px rgba(255, 209, 0, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
}
.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 209, 0, 0.3);
}
/* 个人中心按钮样式 */
.user-nav-btn {
    display: flex;
    align-items: center;
    gap: 5px;
}
.badge-custom {
    background-color: var(--red-heart);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
}
/* 搜索栏样式 */
.search-bar {
    max-width: 600px;
    margin: 0 auto 30px;
    padding: 0 20px;
    position: relative;
}
.search-input {
    width: 100%;
    padding: 12px 20px 12px 45px;
    border-radius: var(--radius-lg);
    border: 2px solid rgba(255, 209, 0, 0.2);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-base);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}
.search-input:focus {
    border-color: var(--primary-yellow);
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 15px rgba(255, 209, 0, 0.1);
}
.search-icon {
    position: absolute;
    left: 35px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 1.1rem;
}
/* 排序选项样式 */
.sort-options {
    max-width: 1000px;
    margin: 0 auto 20px;
    padding: 0 20px;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
.sort-btn {
    padding: 6px 15px;
    border-radius: 15px;
    border: 1px solid var(--primary-yellow);
    background-color: rgba(255, 255, 255, 0.7);
    color: #333;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-base);
}
.sort-btn.active {
    background: var(--orange-gradient);
    color: white;
    border-color: var(--primary-yellow);
}
/* 社区页面专属样式增强 */
.community-header {
    text-align: center;
    margin: 60px 0 30px; /* 标题下移（增加margin-top） */
    padding: 0 20px;
}
.community-header h2 {
    font-weight: 900;
    color: var(--text-dark);
    letter-spacing: 0.5px;
    font-size: 2rem;
    position: relative;
    display: inline-block;
}
.community-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--orange-gradient);
    border-radius: 2px;
}
.community-header p {
    color: #666;
    margin-top: 20px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
/* 分类筛选按钮增强 */
.category-filter {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    padding: 0 20px;
}
.category-filter .btn {
    border-radius: 20px;
    padding: 8px 20px;
    transition: var(--transition-base);
    font-weight: 500;
    border: 2px solid var(--primary-yellow);
}
.category-filter .btn-outline-warning {
    color: #333;
    background-color: transparent;
}
.category-filter .btn-outline-warning:hover {
    background-color: rgba(255, 209, 0, 0.1);
    transform: translateY(-2px);
}
.category-filter .btn.active {
    background-color: var(--primary-yellow);
    border-color: var(--primary-yellow);
    color: #333;
    box-shadow: 0 4px 12px rgba(255, 209, 0, 0.2);
}
/* 加载动画 */
.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
}
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 209, 0, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-yellow);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 20px;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
/* 帖子容器（小红书风格网格） */
.posts-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px; /* 卡片间距 */
    margin-bottom: 60px;
}
/* 帖子卡片增强 - 优化错落布局规律 */
.post-card {
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    cursor: pointer;
}
/* 更规律的错落布局：奇偶行交替偏移 */
.posts-container > .post-card:nth-child(even) {
    transform: translateY(15px);
}
.posts-container > .post-card:nth-child(odd) {
    transform: translateY(-5px);
}
.post-card:hover {
    transform: translateY(-8px) scale(1.01) !important;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}
/* 帖子图片增强 */
.post-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-bottom: 1px solid #f5f5f5;
    transition: var(--transition-base);
}
.post-card:hover .post-img {
    transform: scale(1.03);
}
/* 帖子内容增强 */
.post-content {
    padding: 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.post-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.post-desc {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}
/* 帖子热度标签 */
.post-hot {
    display: inline-block;
    padding: 2px 8px;
    background-color: #ff6b6b;
    color: white;
    font-size: 0.7rem;
    border-radius: 4px;
    margin-right: 5px;
}
/* 帖子底部信息增强 */
.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: #999;
    padding-top: 12px;
    border-top: 1px solid #f5f5f5;
}
.post-author {
    display: flex;
    align-items: center;
    gap: 8px;
}
.author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--light-yellow);
}
.post-category {
    background-color: var(--light-yellow);
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 0.75rem;
    color: #333;
}
/* 点赞按钮样式 */
.post-like {
    display: flex;
    align-items: center;
    gap: 5px;
    color: #999;
    cursor: pointer;
    transition: var(--transition-base);
}
.post-like:hover {
    color: var(--red-heart);
}
.post-like.liked {
    color: var(--red-heart);
}
.like-icon {
    font-size: 1rem;
    transition: transform 0.2s ease;
}
.post-like.liked .like-icon {
    transform: scale(1.1);
}
/* 评论功能样式 */
.post-comment {
    display: flex;
    align-items: center;
    gap: 5px;
    color: #999;
    cursor: pointer;
    transition: color 0.2s ease;
    margin-left: 15px;
}
.post-comment:hover {
    color: #0d6efd; /* 鼠标悬浮变蓝色 */
}
.comment-icon {
    font-size: 1rem;
}
.comments-section {
    padding: 15px;
    border-top: 1px solid #f5f5f5;
    display: none; /* 默认隐藏 */
}
.comments-section.show {
    display: block; /* 展开时显示 */
}
.comments-list {
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 15px;
}
.comment-item {
    padding: 10px 0;
    border-bottom: 1px solid #f5f5f5;
}
.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
}
.comment-author {
    font-weight: 500;
    font-size: 0.8rem;
}
.comment-time {
    font-size: 0.7rem;
    color: #999;
}
.comment-content {
    font-size: 0.85rem;
    line-height: 1.5;
}
.comment-input-container {
    display: flex;
    gap: 10px;
    align-items: center;
}
.comment-input {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid #e0e0e0;
    border-radius: 20px;
    font-size: 0.85rem;
    outline: none;
}
.comment-input:focus {
    border-color: #FFD100; /* 聚焦时变黄 */
}
.comment-submit {
    background: #FFD100;
    color: white;
    border: none;
    border-radius: 20px;
    padding: 8px 15px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s ease;
}
.comment-submit:hover {
    background: #FFB800;
}
/* 空状态样式优化 */
.empty-posts {
    grid-column: 1 / -1; /* 占满整行 */
    text-align: center;
    padding: 80px 20px;
    color: var(--text-dark);
}
.empty-posts i {
    font-size: 3rem;
    color: var(--primary-yellow);
    margin-bottom: 20px;
    display: block;
}
.empty-posts h4 {
    font-weight: 700;
    margin-bottom: 10px;
}
.empty-posts p {
    color: #666;
    margin-bottom: 20px;
}
.empty-posts .btn {
    background: var(--orange-gradient);
    border: none;
    color: white;
    border-radius: 20px;
    padding: 8px 20px;
    box-shadow: 0 4px 10px rgba(255, 209, 0, 0.2);
}
/* 发布帖子模态框优化 */
#publishPostModal .modal-content {
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    border: none;
    overflow: hidden;
}
#publishPostModal .modal-header {
    background-color: var(--light-yellow);
    border-bottom: 1px solid #f5f5f5;
}
#publishPostModal .modal-title {
    font-weight: 700;
    color: var(--text-dark);
}
#publishPostModal .form-control {
    border-radius: var(--radius-sm);
    border: 1px solid #e0e0e0;
    padding: 10px 15px;
    transition: var(--transition-base);
}
#publishPostModal .form-control:focus {
    border-color: var(--primary-yellow);
    box-shadow: 0 0 0 3px rgba(255, 209, 0, 0.1);
}
#post-img-preview {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
    margin-top: 10px;
    border-radius: 8px;
    display: none;
    border: 2px solid var(--light-yellow);
}
/* 表单提示样式 */
.form-error {
    color: #dc3545;
    font-size: 0.85rem;
    margin-top: 5px;
    display: none;
}
/* 图片预览模态框 */
#imagePreviewModal .modal-content {
    background-color: rgba(0, 0, 0, 0.9);
    border: none;
    border-radius: 0;
}
#previewImage {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
}
/* 我的帖子/收到的赞模态框样式 */
#userPostsModal .modal-content,
#likedPostsModal .modal-content {
    border-radius: var(--radius-md);
    box-shadow: var(--card-shadow);
    border: none;
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}
#userPostsModal .modal-header,
#likedPostsModal .modal-header {
    background-color: var(--light-yellow);
    border-bottom: 1px solid #f5f5f5;
}
#userPostsModal .modal-title,
#likedPostsModal .modal-title {
    font-weight: 700;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}
.modal-stats {
    background-color: var(--light-yellow);
    padding: 15px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--orange);
}
.stat-label {
    font-size: 0.85rem;
    color: #666;
}
/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--orange-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(255, 209, 0, 0.3);
    cursor: pointer;
    transition: var(--transition-base);
    opacity: 0;
    visibility: hidden;
    z-index: 998;
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(255, 209, 0, 0.4);
}
/* 响应式调整增强 */
@media (max-width: 768px) {
    .posts-container {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 20px;
    }
    .community-header {
        margin-top: 40px;
    }
    .community-header h2 {
        font-size: 1.6rem;
    }
    .post-img {
        height: 180px;
    }
    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
    .modal-stats {
        justify-content: center;
    }
    .navbar-container {
        flex-wrap: wrap;
    }
    .nav-buttons-group {
        margin-top: 0.5rem;
        width: 100%;
        justify-content: flex-start;
    }
}
@media (max-width: 480px) {
    .navbar-brand {
        font-size: 1.2rem;
        margin-right: 1rem;
    }
    .nav-link {
        padding: 0.5rem 0.8rem !important;
        font-size: 0.9rem;
    }
    .nav-btn {
        padding: 5px 12px !important;
        font-size: 0.9rem;
    }
    .category-filter .btn {
        padding: 6px 15px;
        font-size: 0.9rem;
    }
    .search-input {
        padding: 10px 15px 10px 40px;
    }
    .search-icon {
        left: 25px;
        font-size: 1rem;
    }
    .user-nav-btn {
        font-size: 0.85rem;
        padding: 5px 10px !important;
    }
}
/* 帖子详情弹窗样式修复 */
#postDetailModal .modal-backdrop {
  background-color: rgba(0, 0, 0, 0.7); /* 半透明背景，避免全黑 */
}

#postDetailModal .modal-dialog {
  max-width: 800px; /* 限制弹窗宽度，适配大屏 */
  margin: 1.75rem auto; /* 确保弹窗有上下边距 */
}

#postDetailModal .modal-content {
  background-color: #fff; /* 弹窗背景设为白色 */
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15); /* 增加阴影，提升层次感 */
}

#postDetailModal .modal-body {
  padding: 0; /* 避免图片被内边距挤压 */
}

/* 修复小屏幕下弹窗适配 */
@media (max-width: 576px) {
  #postDetailModal .modal-dialog {
    margin: 0.5rem;
  }
  #detailPostImg {
    height: 200px; /* 小屏幕下缩小图片高度 */
  }
}
/* 评论项样式优化 */
.comment-item {
    transition: background-color 0.2s ease;
}
.comment-item:hover {
    background-color: #f8f9fa;
}

/* 帖子卡片样式 */
.post-card {
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.post-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.post-content {
    padding: 1rem;
}
.post-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}
.post-hot {
    background-color: #dc3545;
    color: white;
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-right: 0.5rem;
}
.post-desc {
    color: #6c757d;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.author-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    margin-right: 0.5rem;
}
.post-like, .post-comment {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}
.post-like.liked .like-icon {
    color: #dc3545;
}

/* 加载状态样式 */
.loading {
    text-align: center;
    padding: 3rem 0;
}
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #ffc107;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 40px;
    height: 40px;
    background-color: #ffc107;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* 表单错误提示 */
.form-error {
    color: #dc3545;
    font-size: 0.875rem;
    display: none;
    margin-top: 0.25rem;
}
/* 帖子详情弹窗专属样式（隔离全局样式） */
#postDetailModal .post-info-wrapper {
  font-family: 'Noto Sans SC', sans-serif;
}

/* 互动按钮样式（避免重叠） */
#postDetailModal .post-actions-wrapper {
  padding: 0.5rem 0;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
}

#postDetailModal .post-actions-wrapper i {
  margin-right: 0.3rem;
}

/* 评论区样式（分层清晰） */
#postDetailModal .comments-wrapper {
  margin-top: 1.5rem;
}

#postDetailModal .comment-item {
  padding: 1rem;
  margin-bottom: 1rem;
  background-color: #f8f9fa;
  border-radius: 8px;
}

#postDetailModal .comment-item .comment-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

#postDetailModal .comment-item .comment-author {
  font-weight: 600;
}

#postDetailModal .comment-item .comment-time {
  font-size: 0.8rem;
  color: #6c757d;
}

#postDetailModal .comment-item .comment-content {
  color: #333;
  line-height: 1.5;
}

/* 输入框样式（避免挤压） */
#postDetailModal .comment-input-container {
  margin-top: 1rem;
}
/* 我的评论模态框样式 */
.comment-card {
    background: #fff;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.comment-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.post-title-link {
    color: #ffc107;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s;
}

.post-title-link:hover {
    color: #ff9800;
    text-decoration: underline;
}

.comment-card-content {
    margin-bottom: 0.5rem;
    padding: 0.5rem 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.comment-card-footer {
    font-size: 0.875rem;
}
/* 头像相关样式 */
.avatar-preview {
    cursor: pointer;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
}
.avatar-preview:hover {
    background: #f1f1f1;
}

/* 评论功能扩展样式 */
.comment-item {
    position: relative;
    padding: 0.8rem;
    background: #f8f9fa;
    border-radius: 6px;
    margin-bottom: 0.8rem;
}
.comment-actions {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: opacity 0.2s;
}
.comment-item:hover .comment-actions {
    opacity: 1;
}
.comment-action-btn {
    background: transparent;
    border: none;
    color: #999;
    cursor: pointer;
    font-size: 0.875rem;
}
.comment-action-btn:hover {
    color: #ffc107;
}
.comment-reply {
    margin-left: 1.5rem;
    border-left: 2px solid #ffc107;
    padding-left: 1rem;
    margin-top: 0.5rem;
}
.comment-like-btn {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: #999;
    cursor: pointer;
    margin-top: 0.3rem;
    font-size: 0.875rem;
}
.comment-like-btn:hover {
    color: #ffc107;
}
.comment-like-btn.liked {
    color: #dc3545;
}

/* 帖子功能扩展样式 */
.post-card .post-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}
.post-collect {
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    color: #999;
}
.post-collect:hover {
    color: #ffc107;
}
.post-collect.collected {
    color: #ffc107;
}
.follow-btn {
    background: transparent;
    border: 1px solid #ffc107;
    color: #ffc107;
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.875rem;
    cursor: pointer;
}
.follow-btn.followed {
    background: #ffc107;
    color: #fff;
}
.share-btn {
    cursor: pointer;
    color: #999;
}
.share-btn:hover {
    color: #ffc107;
}
.share-options {
    position: absolute;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 4px;
    padding: 0.5rem;
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    z-index: 100;
}
.share-options.show {
    display: flex;
}
.share-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.5rem;
    cursor: pointer;
}
.share-option:hover {
    background: #f8f9fa;
}

/* 表单错误提示 */
.form-error {
    display: none;
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}
/* 评论卡片样式 */
.comment-card {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}
.comment-card-header {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.comment-card-header .post-title-link {
    font-weight: 500;
    color: #ffc107;
    cursor: pointer;
}
.comment-card-header .post-title-link:hover {
    text-decoration: underline;
}
.comment-card-content {
    margin-bottom: 0.5rem;
}
.comment-card-footer {
    font-size: 0.875rem;
    color: #6c757d;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #ffc107;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: #ffca2c;
}

/* 编辑模态框样式适配 */
#edit-post-img-preview {
    max-width: 100%;
    max-height: 200px;
    display: none;
    margin-top: 0.5rem;
}

/* 加载动画 */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: #6c757d;
}
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #ffc107;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
/* 用户下拉菜单样式 */
.user-menu {
    position: relative;
}
.user-dropdown {
    position: absolute;
    top: 120%;
    right: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    width: 200px;
    padding: 0.8rem 0;
    display: none;
    z-index: 9999; /* 确保菜单在最上层 */
}
.user-dropdown.show {
    display: block;
}
.user-dropdown-item {
    display: block;
    padding: 0.5rem 1.5rem;
    text-decoration: none;
    color: #333;
    transition: background-color 0.2s;
}
.user-dropdown-item:hover {
    background-color: #f8f9fa;
    color: #ffc107;
}
.user-avatar-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    cursor: pointer;
    border: 2px solid #ffc107;
}
/* 下拉菜单基础样式 */
.dropdown-menu {
  padding: 0.5rem 0;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 0.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  background-color: #fff;
}
.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.5rem 1rem;
  clear: both;
  font-weight: 400;
  color: #212529;
  text-align: inherit;
  text-decoration: none;
  white-space: nowrap;
  background-color: transparent;
  border: 0;
  cursor: pointer;
}
.dropdown-item:hover {
  background-color: #f8f9fa;
}
.dropdown-divider {
  height: 1px;
  margin: 0.5rem 0;
  overflow: hidden;
  background-color: #e9ecef;
}
/* 头像容器相对定位，确保下拉菜单绝对定位 */
.user-avatar-container {
  position: relative;
}
/* 下拉菜单核心样式 */
#avatarDropdownMenu {
  display: none; /* 默认隐藏 */
  padding: 0.5rem 0;
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  background-color: white;
  margin-top: 0.5rem;
}

#avatarDropdownMenu.show {
  display: block; /* 显示状态 */
}

/* 下拉菜单项样式 */
.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.5rem 1rem;
  clear: both;
  font-weight: 400;
  color: #212529;
  text-align: inherit;
  text-decoration: none;
  white-space: nowrap;
  background-color: transparent;
  border: 0;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.dropdown-item:hover {
  background-color: #f8f9fa;
  color: #ffc107;
}

.dropdown-divider {
  height: 1px;
  margin: 0.5rem 0;
  overflow: hidden;
  background-color: #e9ecef;
}

/* 确保头像容器正确定位 */
.user-avatar-container {
  position: relative;
  display: inline-block;
}