/* ===== 组件样式 ===== */

/* 主应用布局 */
.main-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 导航栏 */
.navbar {
    background: var(--surface);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand h2 {
    font-size: 20px;
    color: var(--primary-color);
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

/* 应用内容区 */
.app-content {
    display: flex;
    flex: 1;
}

/* 侧边栏 */
.sidebar {
    width: 250px;
    background: var(--surface);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
}

.menu-item:hover {
    background: var(--background);
    color: var(--primary-color);
}

.menu-item.active {
    background: #EEF2FF;
    color: var(--primary-color);
    border-right: 3px solid var(--primary-color);
}

.menu-item .icon {
    font-size: 20px;
}

.menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: 12px 24px;
}

/* 主内容区 */
.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* 页面头部 */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.page-header h2 {
    font-size: 24px;
    color: var(--text-primary);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 文章相关 */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.article-card {
    background: var(--surface);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: all 0.2s;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.article-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.article-summary {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* 文章详情 */
.article-detail {
    max-width: 800px;
    margin: 0 auto;
}

.article-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border-color);
}

.article-header h1 {
    font-size: 32px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.article-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.article-actions {
    display: flex;
    gap: 12px;
}

/* 表格 */
.table-container {
    background: var(--surface);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead {
    background: var(--background);
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 13px;
    text-transform: uppercase;
}

.data-table td {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
}

.data-table tr:hover {
    background: var(--background);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--surface);
    border-radius: 12px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 18px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 12px;
    }
    
    .app-content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .table-container {
        overflow-x: auto;
    }
}

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* ===== 评论区样式 ===== */
.comments-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid var(--border-color);
}

.comments-header {
    margin-bottom: 20px;
}

.comments-header h3 {
    font-size: 20px;
    color: var(--text-primary);
}

.comment-form {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--surface);
    border-radius: 8px;
}

.comment-form textarea {
    width: 100%;
    margin-bottom: 12px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    resize: vertical;
}

.comment-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.login-prompt {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    background: var(--surface);
    border-radius: 8px;
    margin-bottom: 20px;
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.comment-item {
    padding: 16px;
    background: var(--surface);
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.comment-reply {
    margin-left: 40px;
    border-left-color: var(--secondary-color);
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.comment-author {
    font-weight: 600;
    color: var(--text-primary);
}

.comment-role {
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
}

.comment-time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-left: auto;
}

.comment-content {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 8px;
}

.comment-replies {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.badge-danger {
    background-color: #dc3545;
    color: white;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .comment-reply {
        margin-left: 20px;
    }
    
    .comment-header {
        font-size: 13px;
    }
}