/**
 * 高维数科主题组件样式
 * Theme Components for Gaowei Digital Tech
 * 基于Bootstrap 3的组件级样式覆盖和增强
 */

/* ========================================
   1. 全局样式重置和基础
   ======================================== */

* {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

body {
    background-color: #F8FAFC;
    color: #475569;
    font-size: 16px;
    line-height: 1.7;
}

body.body-white {
    background-color: #FFFFFF;
}

/* ========================================
   2. 标题排版
   ======================================== */

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    color: #0F172A;
    font-weight: 600;
    line-height: 1.3;
    margin-top: 0;
}

h1, .h1 {
    font-size: 36px;
    font-weight: 700;
}

h2, .h2 {
    font-size: 28px;
}

h3, .h3 {
    font-size: 22px;
}

h4, .h4 {
    font-size: 18px;
}

h5, .h5 {
    font-size: 16px;
    font-weight: 500;
}

p {
    color: #475569;
    line-height: 1.7;
    margin-bottom: 16px;
}

a {
    color: #1A73E8;
    transition: color 0.2s ease;
}

a:hover {
    color: #1557B0;
    text-decoration: none;
}

.text-muted {
    color: #94A3B8 !important;
}

/* ========================================
   3. 导航栏 - 渐变样式
   ======================================== */

.navbar-default {
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    border: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    min-height: 60px;
}

.navbar-default .navbar-brand {
    color: #FFFFFF;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    height: 60px;
    line-height: 30px;
    padding: 15px 15px;
}

.navbar-default .navbar-brand:hover {
    color: #FFFFFF;
    opacity: 0.9;
}

.navbar-default .navbar-nav > li > a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    padding: 20px 15px;
    transition: all 0.2s ease;
}

.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li > a:focus {
    color: #FFFFFF;
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar-default .navbar-nav > .active > a,
.navbar-default .navbar-nav > .active > a:hover,
.navbar-default .navbar-nav > .active > a:focus {
    background-color: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
}

.navbar-default .navbar-toggle {
    border-color: rgba(255, 255, 255, 0.3);
    margin-top: 13px;
}

.navbar-default .navbar-toggle:hover,
.navbar-default .navbar-toggle:focus {
    background-color: rgba(255, 255, 255, 0.1);
}

.navbar-default .navbar-toggle .icon-bar {
    background-color: #FFFFFF;
}

.navbar-default .navbar-form .form-control {
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background-color: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
    padding: 8px 16px;
}

.navbar-default .navbar-form .form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.navbar-default .navbar-form .btn {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
    border: none;
    border-radius: 20px;
    color: #FFFFFF;
    font-weight: 600;
    padding: 8px 20px;
    transition: all 0.2s ease;
}

.navbar-default .navbar-form .btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4);
}

/* 下拉菜单样式 */
.navbar-default .dropdown-menu {
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border: 1px solid #E2E8F0;
    padding: 8px 0;
}

.navbar-default .dropdown-menu > li > a {
    color: #475569;
    padding: 10px 20px;
    transition: all 0.2s ease;
}

.navbar-default .dropdown-menu > li > a:hover {
    background-color: #F1F5F9;
    color: #1A73E8;
}

/* 移动端导航 */
@media (max-width: 767px) {
    .navbar-default .navbar-nav .open .dropdown-menu {
        background-color: rgba(0, 0, 0, 0.1);
    }
    
    .navbar-default .navbar-nav .open .dropdown-menu > li > a {
        color: rgba(255, 255, 255, 0.9);
    }
    
    .navbar-default .navbar-nav .open .dropdown-menu > li > a:hover {
        background-color: rgba(255, 255, 255, 0.1);
        color: #FFFFFF;
    }
    
    .navbar-default .navbar-form {
        margin-top: 10px;
        margin-bottom: 10px;
    }
}

/* ========================================
   4. 卡片组件
   ======================================== */

.tc-gridbox {
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: none;
    overflow: hidden;
    background-color: #FFFFFF;
    transition: all 0.3s ease;
    margin: 0 10px 20px 10px;
}

.tc-gridbox:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.tc-gridbox .header {
    padding: 0;
    background-color: #FFFFFF;
}

.tc-gridbox .header .item-image {
    overflow: hidden;
    position: relative;
}

.tc-gridbox .header .item-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.3), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.tc-gridbox:hover .header .item-image::after {
    opacity: 1;
}

.tc-gridbox .header img {
    transition: transform 0.3s ease;
}

.tc-gridbox:hover .header img {
    transform: scale(1.05);
}

.tc-gridbox .header h3 {
    color: #0F172A;
    margin: 16px;
    font-size: 16px;
    font-weight: 600;
}

.tc-gridbox .header h3 a,
.tc-gridbox .header h3 a:focus {
    color: #0F172A;
    transition: color 0.2s ease;
}

.tc-gridbox .header h3 a:hover {
    color: #1A73E8;
}

.tc-gridbox .body {
    padding: 0 16px 16px;
    color: #475569;
}

/* tc-box 样式 */
.tc-box {
    background-color: #FFFFFF;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: none;
    padding: 24px;
    margin-bottom: 24px;
}

.tc-box.article-box {
    padding: 40px;
    border-left: 4px solid transparent;
    border-image: linear-gradient(to bottom, #2563EB, #7C3AED) 1;
}

.tc-box.first-box {
    margin-top: 0;
}

.body-white .tc-box {
    border: none;
}

/* 响应式卡片 */
@media (max-width: 767px) {
    .tc-gridbox {
        margin: 0 0 16px 0;
    }
    
    .tc-box {
        padding: 16px;
    }
    
    .tc-box.article-box {
        padding: 20px;
    }
}

/* ========================================
   5. 按钮系统
   ======================================== */

.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 10px 24px;
    transition: all 0.2s ease;
    border: none;
}

.btn:hover {
    transform: translateY(-2px);
}

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

.btn-primary {
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1D4ED8 0%, #6D28D9 100%);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
    color: #FFFFFF;
}

.btn-info {
    background: linear-gradient(135deg, #06B6D4 0%, #3B82F6 100%);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}

.btn-info:hover {
    background: linear-gradient(135deg, #0891B2 0%, #2563EB 100%);
    box-shadow: 0 6px 16px rgba(6, 182, 212, 0.4);
    color: #FFFFFF;
}

.btn-success {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
    color: #FFFFFF;
}

.btn-danger {
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #B91C1C 0%, #991B1B 100%);
    box-shadow: 0 6px 16px rgba(220, 38, 38, 0.4);
    color: #FFFFFF;
}

.btn-warning {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #EA580C 0%, #C2410C 100%);
    box-shadow: 0 6px 16px rgba(249, 115, 22, 0.4);
    color: #FFFFFF;
}

.btn-default {
    background-color: #FFFFFF;
    color: #475569;
    border: 1px solid #E2E8F0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn-default:hover {
    background-color: #F1F5F9;
    color: #0F172A;
    border-color: #CBD5E1;
}

.btn-sm {
    padding: 6px 16px;
    font-size: 14px;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 18px;
}

/* ========================================
   6. 表单元素
   ======================================== */

.form-control {
    border-radius: 8px;
    border: 1px solid #E2E8F0;
    padding: 10px 16px;
    transition: all 0.2s ease;
    box-shadow: none;
}

.form-control:focus {
    border-color: #1A73E8;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
    outline: none;
}

.input-sm {
    padding: 6px 12px;
    font-size: 14px;
}

.input-lg {
    padding: 12px 20px;
    font-size: 18px;
}

/* ========================================
   7. 导航面包屑和标签页
   ======================================== */

.breadcrumb {
    background-color: transparent;
    padding: 16px 0;
    border-radius: 0;
    font-size: 14px;
}

.breadcrumb > li + li:before {
    color: #94A3B8;
}

.breadcrumb > li > a {
    color: #1A73E8;
}

.breadcrumb > .active {
    color: #94A3B8;
}

.nav-tabs {
    border-bottom: 2px solid #E2E8F0;
}

.nav-tabs > li > a {
    border: none;
    color: #475569;
    font-weight: 500;
    padding: 12px 24px;
    position: relative;
    transition: all 0.2s ease;
}

.nav-tabs > li > a:hover {
    background-color: transparent;
    color: #1A73E8;
}

.nav-tabs > li.active > a,
.nav-tabs > li.active > a:hover,
.nav-tabs > li.active > a:focus {
    border: none;
    background-color: transparent;
    color: #1A73E8;
}

.nav-tabs > li.active > a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
}

/* ========================================
   8. 分页样式
   ======================================== */

.pagination > li > a,
.pagination > li > span {
    border-radius: 8px;
    margin: 0 4px;
    color: #475569;
    border: 1px solid #E2E8F0;
    transition: all 0.2s ease;
}

.pagination > li > a:hover,
.pagination > li > span:hover {
    background-color: #1A73E8;
    border-color: #1A73E8;
    color: #FFFFFF;
}

.pagination > .active > a,
.pagination > .active > span {
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    border-color: transparent;
    color: #FFFFFF;
}

/* ========================================
   9. 侧边栏组件
   ======================================== */

/* 排行榜 */
.ranking {
    padding: 8px 0;
}

.ranking ul li {
    padding: 12px 0;
    border-bottom: 1px dashed #E2E8F0;
    transition: all 0.2s ease;
}

.ranking ul li:hover {
    background-color: #F8FAFC;
    padding-left: 8px;
}

.ranking ul li:last-child {
    border-bottom: none;
}

.ranking li i {
    background: linear-gradient(135deg, #94A3B8 0%, #64748B 100%);
    border-radius: 4px;
}

.ranking li.top3 i {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
}

/* 文章列表 */
.posts .dl-horizontal {
    margin-bottom: 20px;
    padding: 12px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.posts .dl-horizontal:hover {
    background-color: #F8FAFC;
}

.posts .dl-horizontal dt .img-wraper {
    border-radius: 8px;
    border: 2px solid #E2E8F0;
    overflow: hidden;
    transition: all 0.2s ease;
}

.posts .dl-horizontal:hover dt img {
    border-color: #1A73E8;
}

.posts .dl-horizontal dd a {
    font-size: 14px;
    font-weight: 500;
    color: #0F172A;
    line-height: 1.5 !important;
}

.posts .dl-horizontal dd a:hover {
    color: #1A73E8;
}

/* ========================================
   10. 页脚
   ======================================== */

.footer-primary {
    background-color: #0F172A;
    color: #CBD5E1;
    padding: 60px 0 30px;
    margin-top: 60px;
}

.footer-primary a {
    color: #94A3B8;
    transition: color 0.2s ease;
}

.footer-primary a:hover {
    color: #FFFFFF;
}

.footer-copyright {
    color: #64748B;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    line-height: 1.8;
}

.footer-copyright a {
    color: #94A3B8;
}

.links a {
    color: #94A3B8;
    margin-right: 16px;
    display: inline-block;
    margin-bottom: 8px;
}

.links a:hover {
    color: #FFFFFF;
}

/* 返回顶部按钮 */
#backtotop {
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: none;
    cursor: pointer;
    font-size: 24px;
    z-index: 9999;
    text-align: center;
    line-height: 50px;
    color: #FFFFFF;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
    transition: all 0.3s ease;
}

#backtotop:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.6);
    color: #FFFFFF;
}

/* ========================================
   11. 列表卡片样式
   ======================================== */

.list-boxes {
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: none;
    margin-bottom: 24px;
    transition: all 0.3s ease;
}

.list-boxes:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    border: none;
}

.list-boxes h2 a {
    color: #0F172A;
    font-weight: 600;
    transition: color 0.2s ease;
}

.list-boxes:hover h2 a {
    color: #1A73E8;
}

/* ========================================
   12. 缩略图组件
   ======================================== */

.thumbnail {
    border-radius: 16px;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.thumbnail:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.thumbnail > img {
    border-radius: 16px 16px 0 0;
}

/* ========================================
   13. 徽章和标签
   ======================================== */

.label {
    border-radius: 12px;
    padding: 4px 12px;
    font-weight: 500;
}

.label-primary {
    background: linear-gradient(135deg, #2563EB 0%, #7C3AED 100%);
}

.label-success {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

.label-info {
    background: linear-gradient(135deg, #06B6D4 0%, #3B82F6 100%);
}

.label-warning {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 100%);
}

.label-danger {
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
}

/* ========================================
   14. 面板和警告框
   ======================================== */

.alert {
    border-radius: 12px;
    border: none;
    padding: 16px 20px;
}

.alert-warning {
    background-color: #FEF3C7;
    color: #92400E;
}

.alert-info {
    background-color: #DBEAFE;
    color: #1E40AF;
}

.alert-success {
    background-color: #D1FAE5;
    color: #065F46;
}

.alert-danger {
    background-color: #FEE2E2;
    color: #991B1B;
}

/* ========================================
   15. 响应式优化
   ======================================== */

@media (max-width: 767px) {
    h1, .h1 {
        font-size: 28px;
    }
    
    h2, .h2 {
        font-size: 24px;
    }
    
    h3, .h3 {
        font-size: 20px;
    }
    
    .btn {
        padding: 8px 16px;
    }
    
    .tc-box {
        padding: 16px;
    }
}

/* 触摸设备优化 - 禁用悬停动画 */
@media (hover: none) {
    .tc-gridbox:hover {
        transform: none;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    
    .btn:hover {
        transform: none;
    }
    
    .thumbnail:hover {
        transform: none;
    }
}