/* ===================================
   组件样式
   =================================== */

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    z-index: 1000;
    display: flex;
    align-items: center;
}

.navbar .container {
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-greeting {
    color: var(--text-primary);
    font-weight: 500;
}

.theme-switcher {
    display: flex;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
}

.theme-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    opacity: 0.6;
}

.theme-btn:hover,
.theme-btn.active {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.mobile-sidebar {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    z-index: 999;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-sidebar.active {
    display: block;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-theme-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

@media (max-width: 768px) {

    .nav-links,
    .nav-actions {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }
}

/* Hero区域 */
.hero {
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.hero-title span {
    display: block;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.hero-search {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    gap: var(--spacing-sm);
}

.search-input {
    flex: 1;
}

.search-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        gap: var(--spacing-lg);
    }

    .stat-number {
        font-size: 1.8rem;
    }
}

/* 分类标签 */
.categories {
    padding: var(--spacing-xl) 0;
}

.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.category-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.category-tab:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.category-tab.active {
    background: var(--accent-gradient);
    color: #000;
    border-color: transparent;
}

/* 工具卡片 */
.tools-section,
.articles-section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.section-desc {
    color: var(--text-secondary);
}

.view-all-link {
    color: var(--accent-primary);
    font-weight: 500;
}

.tools-grid {
    margin-bottom: var(--spacing-xl);
}

.tool-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
}

.tool-card-header {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.tool-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    background: var(--accent-gradient);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.tool-info {
    flex: 1;
    min-width: 0;
}

.tool-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.tool-category {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.tool-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tool-stats {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.tool-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.download-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.85rem;
}

/* 文章卡片 */
.article-card {
    overflow: hidden;
}

.article-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background: var(--bg-secondary);
}

.article-content {
    padding: var(--spacing-lg);
}

.article-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-excerpt {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.page-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.page-btn:hover,
.page-btn.active {
    background: var(--accent-primary);
    color: #000;
    border-color: var(--accent-primary);
}

/* 页脚 */
.footer {
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-desc {
    color: var(--text-secondary);
    max-width: 300px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
}

.footer-column h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.footer-column a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .footer-links {
        gap: var(--spacing-xl);
    }
}

/* 加载动画容器 */
.loading-container {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

/* 背景装饰 */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.nebula {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
}

.nebula-1 {
    top: -200px;
    right: -200px;
    background: radial-gradient(circle, var(--accent-primary), transparent 70%);
}

.nebula-2 {
    bottom: -200px;
    left: -200px;
    background: radial-gradient(circle, var(--accent-secondary), transparent 70%);
}

/* 空状态 */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}