/* ========== 全局变量和基础样式 ========== */
:root {
    /* 主色调 */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: rgba(37, 99, 235, 0.08);
    --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);

    /* 文字颜色 */
    --text-dark: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    /* 背景色 */
    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    --bg-subtle: #f8fafc;

    /* 边框色 */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;

    /* 阴影 */
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.15);
    --shadow-glow-accent: 0 0 25px rgba(37, 99, 235, 0.25);

    /* 过渡效果 */
    --transition-fast: all 0.15s ease;
    --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* 圆角 */
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 18px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* FontAwesome图标修复 */
i {
    display: inline-block;
    font-style: normal;
    line-height: 1;
}

/* 确保FontAwesome图标字体不被覆盖 */
.fa-solid,
.fa-regular,
.fa-brands,
.fas,
.far,
.fab {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands", "FontAwesome", sans-serif !important;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 修复input-group-text中的图标 */
.input-group-text i {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands", "FontAwesome", sans-serif !important;
}

body {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
}

/* ========== 布局容器 ========== */
.container-fluid {
    max-width: 100vw;
    padding-left: 0;
    padding-right: 0;
}

.row {
    margin-left: 0;
    margin-right: 0;
}

/* ========== 卡片组件 ========== */
.card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    background: var(--bg-card);
    overflow: hidden;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: var(--transition-base);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    background: var(--primary-gradient);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.75rem;
    font-weight: 600;
    position: relative;
}

.card-header h2 {
    color: #fff !important;
}

.card-header i {
    color: rgba(255, 255, 255, 0.95);
    font-size: 20px;
    transition: var(--transition-bounce);
}

.card-header .btn-outline-light {
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
    font-size: 0.8rem;
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.3px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

.card-header .btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-header .btn-outline-light i {
    color: #fff;
    font-size: 11px;
    transition: var(--transition-base);
}

.card-header .btn-outline-light:hover i {
    transform: translateX(3px);
}

.card:hover .card-header i:first-child {
    transform: scale(1.15) rotate(5deg);
}

.card-header h2 {
    margin: 0;
    font-size: 1.15rem;
    color: var(--text-dark);
    font-weight: 700;
    letter-spacing: 0.3px;
}

.card-body {
    padding: 1rem;
}

/* ========== 阴影工具类 ========== */
.shadow {
    box-shadow: var(--shadow-xs) !important;
}

.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

/* ========== 文字颜色工具类 ========== */
.text-primary {
    color: var(--primary-color) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.text-dark {
    color: var(--text-dark) !important;
}

/* ========== 链接优化 ========== */
a {
    transition: var(--transition-base);
}

a:hover {
    text-decoration: none !important;
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
    background: linear-gradient(135deg, #fff 0%, var(--bg-subtle) 100%);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    align-items: center;
}

.breadcrumb-item {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    display: flex;
    align-items: center;
}

.breadcrumb-item a {
    color: var(--primary-color);
    transition: var(--transition-base);
    text-decoration: none;
    font-weight: 600;
    white-space: nowrap;
    display: flex;
    align-items: center;
}

.breadcrumb-item a:hover {
    color: var(--primary-hover);
    transform: translateX(3px) translateY(-2px);
    text-decoration: none;
}

.breadcrumb-item.active {
    color: var(--text-muted);
    font-weight: 600;
    white-space: nowrap;
    display: flex;
    align-items: center;
}

.breadcrumb-item.active h1 {
    font-size: 0.875rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.2;
}

.breadcrumb-item+.breadcrumb-item::before {
    content: '›';
    font-weight: 700;
    color: var(--text-muted);
    font-size: 16px;
    flex-shrink: 0;
    align-self: center;
}

/* ========== 首页样式 ========== */
/* 关键词分类卡片 */
.keyword-category-card {
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: nowrap;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
}

/* 热门关键字区域 - 自动换行 */
.keyword-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* 添加省略号遮罩效果 */
.keyword-category-card::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 60px;
    background: linear-gradient(to right, transparent, var(--bg-card));
    pointer-events: none;
}


/* 列表组优化 */
.list-group .list-group-item {
    border: none;
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0rem;
    transition: var(--transition-base);
    font-size: 14px;
    position: relative;
    overflow: hidden;
    border-left: 3px solid transparent;
}

.list-group .list-group-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: var(--primary-gradient);
    transition: var(--transition-base);
}

.list-group .list-group-item:last-child {
    border-bottom: none;
}

.list-group .list-group-item:hover {
    padding-left: 1.85rem;
    border-left-color: var(--primary-color);
    background: var(--primary-light);
}

.list-group .list-group-item:hover::before {
    width: 3px;
}

/* 小圆点图标 */
.list-group .list-group-item .fa-circle.text-primary {
    font-size: 8px;
    opacity: 0.5;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    color: var(--primary-color) !important;
}

.list-group .list-group-item:hover .fa-circle.text-primary {
    opacity: 1;
   
}

/* 右箭头图标 */
.list-group .list-group-item .fa-chevron-right {
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.list-group .list-group-item:hover .fa-chevron-right {
    transform: translateX(6px);
    color: var(--primary-color) !important;
}

/* 时间标签 */
.list-group .list-group-item time {
    transition: color 0.25s ease;
    flex-shrink: 0;
    font-weight: 500;
}

.list-group .list-group-item:hover time {
    color: var(--text-muted);
}

/* 搜索表单 */
.search {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 1px solid var(--border-color);
}

.bg-light {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
}

.input-group-text {
    background: linear-gradient(135deg, #fff 0%, var(--bg-subtle) 100%);
    border: 2px solid var(--border-color);
    transition: var(--transition-base);
}

.input-group:focus-within .input-group-text {
    border-color: var(--primary-color);
    background: #fff;
}

/* 友情链接区域 */
.links {
    padding-bottom: 2rem;
}

/* ========== 标签链接 ========== */
.tag-link {
    padding: 0.37rem 0.6rem;
    background: linear-gradient(135deg, var(--bg-subtle) 0%, #fff 100%);
    border-radius: 0.2rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-block;
    border: 1.5px solid var(--border-color);
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
}

.tag-link:hover {
    background: var(--primary-gradient);
    color: #fff;
}

/* ========== 导航栏样式 ========== */
.navbar.navbar-dark {
    background: var(--primary-gradient) !important;
    box-shadow: var(--shadow-glow-accent);
    backdrop-filter: blur(10px);
}

.navbar .nav-link {
    font-weight: 700;
    font-size: 16px;
    padding: 0.85rem 1.25rem !important;
    color: rgba(255, 255, 255, 0.95) !important;
    position: relative;
    transition: var(--transition-base);
    letter-spacing: 0.2px;
}

.navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.9);
    transition: var(--transition-base);
    transform: translateX(-50%);
}

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
    width: 80%;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.12);
}

/* ========== 搜索框样式 ========== */
.bg-light {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
}

/* ========== Logo容器 ========== */
.logo {
    display: block;
    max-width: 100%;
    transition: var(--transition-base);
}

.logo:hover {
    transform: scale(1.02);
}

.logo i {
    transition: var(--transition-base);
}

.logo:hover i {
    transform: rotate(-5deg) scale(1.1);
    filter: drop-shadow(0 4px 12px rgba(37, 99, 235, 0.3));
}

/* ========== Logo区域优化 ========== */
section.py-3.py-md-4 {
    background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

section.py-3.py-md-4 .text-dark {
    color: var(--text-dark) !important;
    font-size: 1.6rem;
    letter-spacing: 0.8px;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

section.py-3.py-md-4 .text-muted {
    font-size: 0.9rem;
    font-weight: 500;
}

section.py-3.py-md-4 .text-primary {
    color: var(--primary-color) !important;
    filter: drop-shadow(0 4px 12px rgba(37, 99, 235, 0.25));
}

/* ========== 按钮优化 ========== */
.btn-primary {
    background: var(--primary-gradient);
    border: none;
    font-weight: 700;
    padding: 0.6rem 1.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
    box-shadow: 0 3px 10px rgba(37, 99, 235, 0.3);
    letter-spacing: 0.3px;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary i {
    transition: var(--transition-bounce);
}

.btn-primary:hover i {
    transform: translateX(4px);
}

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.4);
    color: rgba(255, 255, 255, 0.95);
    transition: var(--transition-base);
    font-weight: 600;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn-outline-secondary {
    transition: var(--transition-bounce);
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
}

.btn-outline-secondary:hover {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-accent);
}

/* ========== 滚动条优化 ========== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-subtle);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--border-color), #cbd5e1);
    border-radius: var(--radius-md);
    border: 2px solid var(--bg-subtle);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-color), var(--primary-hover));
}

/* ========== 性能优化：减少不必要的动画 ========== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========== 可访问性优化 ========== */
:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
    outline-style: dashed;
}

/* ========== 页脚样式 ========== */
footer {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    padding: 2rem 0;
    margin-top: auto;
    border-top: 3px solid var(--primary-gradient);
}

footer p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    font-weight: 500;
}

footer a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition-base);
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

footer a:hover {
    color: #fff;
    background: rgba(37, 99, 235, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

footer a i {
    color: var(--primary-color);
    font-size: 14px;
    transition: var(--transition-base);
}

footer a:hover i {
    transform: scale(1.1) rotate(-5deg);
    color: #60a5fa;
}

footer .mx-3 {
    color: rgba(255, 255, 255, 0.4);
}

/* ========== 分类页样式 ========== */
/* 分类列表项 hover-lift 类的替代效果 */
.list-group-item {
    position: relative;
}

.list-group-item:hover {
    padding-left: 1.85rem;
    border-left-color: var(--primary-color);
    background: var(--primary-light);
}

/* ========== 搜索页样式 ========== */
/* 搜索结果列表 */
.search-results-list .search-result-item {
    padding: 1.125rem 1.375rem;
    border-left: 3px solid transparent;
    transition: var(--transition-base);
}

.search-results-list .search-result-item:hover {
    border-left-color: var(--primary-color);
    background: var(--primary-light);
    transform: translateX(6px);
}

.result-icon {
    color: var(--primary-color);
    font-size: 10px;
    opacity: 0.7;
    transition: var(--transition-base);
}

.search-result-item:hover .result-icon {
    opacity: 1;
    transform: scale(1.3);
}

.result-title {
    font-weight: 500;
    color: var(--text-dark);
}

.result-time {
    background: var(--bg-subtle);
    padding: 0.25rem 0.625rem;
    border-radius: 12px;
    font-size: 0.75rem;
}

/* ========== 详情页样式 ========== */
/* 内容详情页 */
.content-body {
    line-height: 1.8;
    color: var(--text-dark);
    font-size: 16px;
}

.content-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.content-body img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.content-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 14px;
}

.content-body table th,
.content-body table td {
    border: 1px solid var(--border-color);
    padding: 0.875rem 1rem;
    text-align: left;
}

.content-body table th {
    background: var(--primary-gradient);
    color: #fff;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.content-body table tr:hover {
    background: var(--primary-light);
}

.content-body table tr:nth-child(even) {
    background: var(--bg-subtle);
}

/* 内容详情页自定义样式 */
.content-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.content-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.content-title.font-bold {
    font-weight: 700 !important;
}

.content-meta {
    font-size: 0.875rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-subtle);
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.meta-item:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
}

.content-actions {
    position: relative;
}

.btn-primary-gradient {
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    transition: var(--transition-bounce);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.btn-primary-gradient:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.nav-prev-btn,
.nav-next-btn {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.nav-prev-btn:hover,
.nav-next-btn:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
    transform: translateY(-2px);
}

/* ========== 侧边栏样式 ========== */
/* 热门文章 */
.hot-article-item {
    padding: 0.875rem 1.125rem;
    border-bottom: 1px dashed var(--border-light);
    transition: var(--transition-base);
}

.hot-article-item:hover {
    background: var(--primary-light);
    padding-left: 1.375rem;
}

.hot-article-item .hot-icon {
    font-size: 0.875rem;
    transition: var(--transition-bounce);
}

.hot-article-item:hover .hot-icon {
    transform: scale(1.2) rotate(5deg);
}

/* 关键字标签 */
.keyword-tag {
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
    transition: var(--transition-bounce);
    font-size: 0.8125rem;
}

.keyword-tag:hover {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-glow-accent);
}

/* ========== 分页优化 ========== */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 1.5rem;
}

.pagination-wrapper .pagination {
    margin: 0;
}

.pagination-wrapper .pagination .page-item .page-link {
    color: var(--text-dark);
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
    margin: 0 0.25rem;
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
}

.pagination-wrapper .pagination .page-item .page-link:hover {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.pagination-wrapper .pagination .page-item.active .page-link {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
}

/* ========== 响应式优化 ========== */
@media (max-width: 768px) {
    .card-header h2 {
        font-size: 1rem;
    }

    .list-group .list-group-item {
        padding: 0.85rem 1rem;
    }
}

/* ========== 顶部欢迎栏优化 ========== */
.welcome {
    background: var(--primary-gradient);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-glow-accent);
    color: rgba(255, 255, 255, 0.95) !important;
    display: inline-block;
    padding: 0.75rem 1.25rem;
}

.welcome .fw-medium {
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.5px;
}