/* ===================== 基础样式 ===================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    color: var(--primary-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===================== 导航栏 ===================== */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.logo svg {
    width: 32px;
    height: 32px;
    fill: var(--primary);
}

.nav {
    display: flex;
    gap: 8px;
}

.nav a {
    padding: 8px 16px;
    color: var(--text-light);
    border-radius: var(--radius);
    transition: all 0.2s;
}

.nav a:hover,
.nav a.active {
    background: var(--primary);
    color: #fff;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-right a {
    color: var(--text-light);
}

/* ===================== 搜索框 ===================== */
.search-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 60px 0;
    text-align: center;
}

.search-section h1 {
    color: #fff;
    font-size: 32px;
    margin-bottom: 12px;
}

.search-section p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 30px;
}

.search-box {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    background: #fff;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.search-box input {
    flex: 1;
    padding: 16px 24px;
    border: none;
    outline: none;
    font-size: 16px;
}

.search-box button {
    padding: 16px 32px;
    background: var(--primary);
    border: none;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.2s;
}

.search-box button:hover {
    background: var(--primary-dark);
}

/* ===================== 分类导航 ===================== */
.categories-bar {
    background: var(--bg-card);
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
}

.categories-bar .container {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.cat-btn {
    padding: 8px 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-light);
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s;
}

.cat-btn:hover,
.cat-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ===================== 热门网站 ===================== */
.section {
    padding: 40px 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.section-title {
    font-size: 24px;
    font-weight: 600;
}

.section-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 24px;
    background: var(--primary);
    margin-right: 12px;
    vertical-align: middle;
}

.view-all {
    color: var(--text-light);
    font-size: 14px;
}

/* ===================== 网站卡片 ===================== */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.site-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    cursor: pointer;
}

.site-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.site-card.featured {
    border: 2px solid var(--primary);
}

.site-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.site-logo {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    object-fit: contain;
    background: var(--bg);
}

.site-info h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.site-category {
    font-size: 12px;
    color: var(--text-light);
}

.site-card p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.site-why {
    color: var(--success);
    font-size: 13px;
    margin-bottom: 12px;
    padding: 8px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 6px;
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.tag {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

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

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

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

.visit-btn {
    padding: 6px 16px;
    background: var(--primary);
    color: #fff !important;
    border-radius: 6px;
    font-size: 14px;
}

.visit-btn:hover {
    background: var(--primary-dark);
}

/* ===================== 列表样式 ===================== */
.site-list {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
}

.site-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
}

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

.site-item:hover {
    background: var(--bg);
}

.site-item .small-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: contain;
    background: var(--bg);
}

.site-item .info {
    flex: 1;
}

.site-item h4 {
    font-size: 15px;
    margin-bottom: 4px;
}

.site-item p {
    font-size: 13px;
    color: var(--text-light);
}

.site-item .date {
    font-size: 12px;
    color: var(--text-light);
}

/* ===================== 分类页面 ===================== */
.category-page {
    padding: 40px 0;
}

.category-header {
    margin-bottom: 30px;
}

.category-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.category-header p {
    color: var(--text-light);
}

.category-list-page {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
}

.cat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: all 0.3s;
}

.cat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.cat-card .icon {
    font-size: 40px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 分类图标 - Feather图标 */
.cat-card .icon i.feather,
.cat-card .icon svg.feather {
    width: 48px !important;
    height: 48px !important;
    color: var(--primary);
    stroke-width: 1.5;
}

/* 分类图标 - 自定义图片 */
.cat-card .icon .cat-icon-img {
    width: 64px;
    height: 64px;
    object-fit: contain;
    border-radius: 14px;
}

.cat-card h3 {
    margin-bottom: 8px;
}

.cat-card p {
    color: var(--text-light);
    font-size: 14px;
}

.cat-card .count {
    margin-top: 12px;
    color: var(--primary);
    font-weight: 600;
}

/* ===================== 详情页 ===================== */
.site-detail {
    padding: 40px 0;
}

.detail-header {
    display: flex;
    gap: 24px;
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    margin-bottom: 30px;
}

.detail-logo {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    object-fit: contain;
    background: var(--bg);
}

.detail-info h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.detail-info .meta {
    color: var(--text-light);
    margin-bottom: 12px;
}

.detail-info .meta span {
    margin-right: 16px;
}

.detail-desc {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius);
    margin-bottom: 30px;
}

.detail-desc h2 {
    font-size: 18px;
    margin-bottom: 16px;
}

.detail-desc p {
    line-height: 1.8;
    color: var(--text-light);
}

.detail-action {
    text-align: center;
    margin-top: 30px;
}

.detail-action a {
    display: inline-block;
    padding: 14px 48px;
    background: var(--primary);
    color: #fff !important;
    border-radius: 50px;
    font-size: 16px;
}

.detail-action a:hover {
    background: var(--primary-dark);
}

/* ===================== 搜索结果 ===================== */
.search-results {
    padding: 40px 0;
}

.search-results h1 {
    font-size: 24px;
    margin-bottom: 24px;
}

.search-results h1 span {
    color: var(--primary);
}

.no-result {
    text-align: center;
    padding: 60px;
    background: var(--bg-card);
    border-radius: var(--radius);
}

/* ===================== 页脚 ===================== */
.footer {
    background: var(--text);
    color: #fff;
    padding: 40px 0;
    margin-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer h4 {
    margin-bottom: 16px;
    font-size: 16px;
}

.footer p,
.footer a {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
    line-height: 2;
}

.footer a:hover {
    color: #fff;
}

.footer-bottom {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

/* ===================== 分页 ===================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 30px;
}

.pagination a,
.pagination span {
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-light);
}

.pagination a:hover,
.pagination a.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ===================== 响应式 ===================== */
@media (max-width: 768px) {
    .header .container {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 20px;
    }
    
    .nav {
        order: 3;
        width: 100%;
        margin-top: 12px;
        overflow-x: auto;
    }
    
    .search-section {
        padding: 40px 0;
    }
    
    .search-section h1 {
        font-size: 24px;
    }
    
    .sites-grid {
        grid-template-columns: 1fr;
    }
    
    .detail-header {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ===================== 工具类 ===================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.hidden { display: none; }

/* ===================== 广告位样式 ===================== */
.ad-container {
    margin: 15px auto;
    max-width: 1200px;
    padding: 0 20px;
}

/* 首页顶部广告 - 横幅大图 */
.ad-container[data-ad-position="home_top"],
.ad-container[data-ad-position="home_middle"],
.ad-container[data-ad-position="home_bottom"] {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid #f0f0f0;
    padding: 8px;
}
.ad-container[data-ad-position="home_top"] .ad-item img,
.ad-container[data-ad-position="home_middle"] .ad-item img,
.ad-container[data-ad-position="home_bottom"] .ad-item img {
    width: 100%;
    height: auto;
    border-radius: 6px;
    display: block;
    transition: opacity 0.3s;
}
.ad-container[data-ad-position="home_top"] .ad-item a:hover img,
.ad-container[data-ad-position="home_middle"] .ad-item a:hover img,
.ad-container[data-ad-position="home_bottom"] .ad-item a:hover img {
    opacity: 0.9;
}

/* 分类页广告 */
.ad-container[data-ad-position="category_top"],
.ad-container[data-ad-position="category_list"] {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid #f0f0f0;
    padding: 8px;
    margin: 15px auto;
    max-width: 1200px;
}
.ad-container[data-ad-position="category_top"] .ad-item img,
.ad-container[data-ad-position="category_list"] .ad-item img {
    width: 100%;
    height: auto;
    border-radius: 6px;
    display: block;
}

/* 底部广告（页脚上方）- 支持多条横排 */
.ad-container[data-ad-position="footer_bottom"] {
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 15px 20px;
    background: #f8f9fa;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}
.ad-container[data-ad-position="footer_bottom"] .ad-item {
    flex-shrink: 0;
}
.ad-container[data-ad-position="footer_bottom"] .ad-item img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 6px;
    display: block;
}

/* 侧边栏广告 */
.ad-container[data-ad-position="sidebar_left"],
.ad-container[data-ad-position="sidebar_right"] {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    width: 140px;
}
.ad-container[data-ad-position="sidebar_left"] {
    left: 5px;
}
.ad-container[data-ad-position="sidebar_right"] {
    right: 5px;
}
.ad-container[data-ad-position="sidebar_left"] .ad-item img,
.ad-container[data-ad-position="sidebar_right"] .ad-item img {
    width: 130px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.12);
    display: block;
    transition: transform 0.3s;
}
.ad-container[data-ad-position="sidebar_left"] .ad-item:hover img,
.ad-container[data-ad-position="sidebar_right"] .ad-item:hover img {
    transform: scale(1.05);
}

/* 移动端隐藏侧边栏广告，底部广告单列 */
@media (max-width: 768px) {
    .ad-container[data-ad-position="sidebar_left"],
    .ad-container[data-ad-position="sidebar_right"] {
        display: none !important;
    }
    .ad-container[data-ad-position="footer_bottom"] {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    .ad-container[data-ad-position="footer_bottom"] .ad-item img {
        max-width: 300px;
    }
}