/* 科技风格颜色变量 */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --border-color: #e2e8f0;
}

/* 全局样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 导航栏样式 */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar-scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* 导航链接样式 */
.nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 50%;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* 下拉菜单样式 */
.dropdown-menu {
    border: none;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    padding: 8px 0;
    animation: dropdownFadeIn 0.3s ease;
}

.dropdown-item {
    transition: all 0.2s ease;
    padding: 8px 16px;
}

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

/* 移动端菜单样式 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: white;
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
    transition: right 0.3s ease;
    z-index: 9999;
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 按钮样式 */
.btn {
    transition: all 0.3s ease;
    border-radius: 8px;
    font-weight: 500;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.3);
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card-img-top {
    transition: transform 0.3s ease;
}

.card:hover .card-img-top {
    transform: scale(1.05);
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: backgroundMove 20s linear infinite;
}

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

@keyframes backgroundMove {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 100% 100%;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* 淡入动画 */
.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 延迟动画 */
.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

.delay-400 {
    animation-delay: 0.4s;
}

.delay-500 {
    animation-delay: 0.5s;
}

/* 计数器动画 */
.counter {
    font-weight: bold;
    color: var(--primary-color);
}

/* 标签样式 */
.badge {
    border-radius: 20px;
    font-weight: 500;
    padding: 4px 12px;
}

/* 文章样式 */
.article-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    transition: color 0.3s ease;
}

.article-title:hover {
    color: var(--primary-color);
}

.article-excerpt {
    color: var(--gray-color);
    line-height: 1.6;
}

/* 页脚样式 */
.footer {
    background-color: var(--dark-color);
    color: white;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--primary-color);
}

/* 社交媒体图标 */
.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icon:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

/* 表单样式 */
.form-control {
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 输入框浮动标签 */
.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--primary-color);
    transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* 图片懒加载 */
.lazyload {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazyload.loaded {
    opacity: 1;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

/* 响应式设计 */
@media (max-width: 1023px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .article-title {
        font-size: 1.25rem;
    }
}

@media (max-width: 767px) {
    .hero {
        padding: 3rem 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .footer {
        text-align: center;
    }
    
    .mobile-menu {
        width: 90%;
    }
}

/* 加载动画 */
.loader {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(59, 130, 246, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 搜索框样式 */
.search-input {
    border-radius: 25px;
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    width: 100%;
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 分类标签样式 */
.category-tag {
    display: inline-block;
    padding: 4px 12px;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-right: 8px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.category-tag:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 标签云样式 */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* 作者信息样式 */
.author-info {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background-color: rgba(59, 130, 246, 0.05);
    border-radius: 12px;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

/* 评论样式 */
.comment {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.comment:last-child {
    border-bottom: none;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

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

.comment-date {
    font-size: 0.875rem;
    color: var(--gray-color);
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
}

.page-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    color: var(--dark-color);
    transition: all 0.3s ease;
}

.page-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.page-link.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 产品卡片样式 */
.product-card {
    transition: all 0.3s ease;
}

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

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.product-old-price {
    font-size: 1rem;
    color: var(--gray-color);
    text-decoration: line-through;
    margin-left: 8px;
}

/* 折扣标签 */
.discount-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: var(--error-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* 星级评分 */
.stars {
    color: var(--warning-color);
    font-size: 0.875rem;
}

/* 面包屑导航 */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '>';
    color: var(--gray-color);
}

.breadcrumb-link {
    color: var(--gray-color);
    transition: color 0.3s ease;
}

.breadcrumb-link:hover {
    color: var(--primary-color);
}

/* 侧边栏样式 */
.sidebar {
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
}

.sidebar-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 8px;
}

.sidebar-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* 热门文章样式 */
.popular-post {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    transition: all 0.3s ease;
}

.popular-post:hover {
    transform: translateX(5px);
}

.popular-post-img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.popular-post-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-color);
    transition: color 0.3s ease;
}

.popular-post:hover .popular-post-title {
    color: var(--primary-color);
}

/* 广告区块 */
.ad-block {
    background-color: rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.ad-block:hover {
    background-color: rgba(139, 92, 246, 0.1);
    border-color: var(--secondary-color);
}

/* 特色区块 */
.feature-block {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-block:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.3);
}

/* 计数器样式 */
.stat-counter {
    text-align: center;
    padding: 2rem;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.stat-counter:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--gray-color);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* 标签页样式 */
.nav-tabs {
    border-bottom: 2px solid var(--border-color);
}

.nav-tabs .nav-item .nav-link {
    border: none;
    color: var(--gray-color);
    font-weight: 500;
    padding: 10px 20px;
    margin-right: 8px;
    transition: all 0.3s ease;
}

.nav-tabs .nav-item .nav-link:hover {
    color: var(--primary-color);
}

.nav-tabs .nav-item .nav-link.active {
    color: var(--primary-color);
    background-color: transparent;
    border-bottom: 3px solid var(--primary-color);
}

/* 手风琴样式 */
.accordion-item {
    border: none;
    margin-bottom: 8px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.accordion-header {
    background-color: white;
    border: none;
}

.accordion-button {
    border-radius: 8px;
    font-weight: 600;
    color: var(--dark-color);
    transition: all 0.3s ease;
}

.accordion-button:not(.collapsed) {
    background-color: rgba(59, 130, 246, 0.05);
    color: var(--primary-color);
    box-shadow: none;
}

.accordion-button:hover {
    background-color: rgba(59, 130, 246, 0.05);
}

.accordion-body {
    background-color: white;
    border-top: 1px solid var(--border-color);
}

/* 滚动动画 */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-animate.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 视频嵌入样式 */
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 12px;
    margin: 1.5rem 0;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 12px;
}

/* 代码块样式 */
pre {
    background-color: #1e293b;
    border-radius: 12px;
    padding: 1.5rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    position: relative;
}

pre code {
    color: #f1f5f9;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* 引用样式 */
blockquote {
    border-left: 4px solid var(--primary-color);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background-color: rgba(59, 130, 246, 0.05);
    border-radius: 0 12px 12px 0;
    font-style: italic;
    color: var(--gray-color);
}

/* 通知样式 */
.alert {
    border-radius: 12px;
    border: none;
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    position: relative;
    overflow: hidden;
}

.alert-primary {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

/* 进度条样式 */
.progress {
    height: 8px;
    border-radius: 4px;
    background-color: rgba(59, 130, 246, 0.1);
    overflow: hidden;
}

.progress-bar {
    background-color: var(--primary-color);
    border-radius: 4px;
    transition: width 0.6s ease;
}

/* 时间线样式 */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -30px;
    top: 8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: white;
    border: 3px solid var(--primary-color);
    z-index: 1;
}

.timeline-date {
    font-size: 0.875rem;
    color: var(--gray-color);
    margin-bottom: 4px;
}

.timeline-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.timeline-content {
    color: var(--gray-color);
    line-height: 1.6;
}