/* 全局样式 */
body {
    font-family: 'Noto Sans SC', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: rgb(244, 246, 249);
    margin: 0;
    padding: 56px 0 0 0; /* 修改padding，保留顶部偏移 */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 0.5rem 1rem;
}

.navbar.fixed-top {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1030;
}



.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: #007bff;
}

.navbar-nav .nav-link {
    color: #495057;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: #007bff;
}

/* 页脚样式 */
footer {
    background-color: #343a40;
    color: #fff;
    padding: 2rem 0;
    margin-top: 3rem;
}

footer a {
    color: #fff;
    text-decoration: none;
}

footer a:hover {
    color: #007bff;
    text-decoration: underline;
}

/* 文章卡片样式 */
.card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    margin-bottom: 2rem;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
}

.card-title {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.card-text {
    color: #6c757d;
}

.card-footer {
    background-color: #fff;
    border-top: 1px solid #f0f0f0;
    padding: 0.75rem 1.25rem;
    font-size: 0.875rem;
    color: #6c757d;
}

/* 文章详情页样式 */
.post-header {
    margin-bottom: 2rem;
    border-bottom: 1px solid #e9ecef;
    padding-bottom: 1rem;
}

.post-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.post-meta {
    color: #6c757d;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.post-content {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

/* 评论区样式 */
.comments-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #e9ecef;
}

.comment {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e9ecef;
}

.comment-meta {
    font-size: 0.875rem;
    color: #6c757d;
    margin-bottom: 0.5rem;
}

.comment-content {
    font-size: 1rem;
}

/* 侧边栏样式 */
.sidebar {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.sidebar-title {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #007bff;
}

.sidebar-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.sidebar-list li:last-child {
    border-bottom: none;
}

.sidebar-list a {
    color: #495057;
    text-decoration: none;
    transition: color 0.3s ease;
}

.sidebar-list a:hover {
    color: #007bff;
}

/* 表单样式 */
.form-control {
    border-radius: 4px;
    border: 1px solid #ced4da;
    padding: 0.5rem 0.75rem;
}

.form-control:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0069d9;
    border-color: #0062cc;
}

/* 搜索框样式 */
.search-form {
    margin-bottom: 2rem;
}

.search-form .form-control {
    border-radius: 4px 0 0 4px;
}

.search-form .btn {
    border-radius: 0 4px 4px 0;
}

/* 分页样式 */
.pagination {
    margin-top: 2rem;
    justify-content: center;
}

.pagination .page-item .page-link {
    color: #007bff;
    border: 1px solid #dee2e6;
    margin: 0 3px;
}

.pagination .page-item.active .page-link {
    background-color: #007bff;
    border-color: #007bff;
    color: #fff;
}

/* 管理后台样式 */
.admin-header {
    background-color: #343a40;
    color: #fff;
    padding: 1rem 0;
    margin-bottom: 2rem;
}

.admin-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0;
}

.admin-content {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

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

.admin-table th,
.admin-table td {
    padding: 0.75rem;
    border-bottom: 1px solid #e9ecef;
}

.admin-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    text-align: left;
}

.admin-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    border-radius: 3px;
}

.btn-success {
    background-color: #28a745;
    border-color: #28a745;
    color: #fff;
}

.btn-danger {
    background-color: #dc3545;
    border-color: #dc3545;
    color: #fff;
}

.btn-warning {
    background-color: #ffc107;
    border-color: #ffc107;
    color: #212529;
}

/* 登录页面样式 */
.login-container {
    max-width: 400px;
    margin: 5rem auto;
    padding: 2rem;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.login-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: #007bff;
}

.login-form .form-group {
    margin-bottom: 1.5rem;
}

.login-form .btn-primary {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .post-title {
        font-size: 2rem;
    }
    
    .sidebar {
        margin-top: 2rem;
    }
    
    .admin-actions {
        flex-direction: column;
    }
    
    .admin-actions .btn {
        margin-bottom: 0.5rem;
    }
}

/* 提示消息样式 */
.alert {
    padding: 0.75rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid transparent;
    border-radius: 4px;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeeba;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}