/* ============================================
   606导航 - 前台公共样式
   ============================================ */

/* ========== 基础重置 ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #4F6EF7;
    --primary-dark: #3A54D4;
    --primary-light: #7B5CFA;
    --bg: #F5F7FB;
    --card: #FFFFFF;
    --text: #2D3748;
    --text-light: #718096;
    --text-muted: #A0AEC0;
    --border: #E2E8F0;
    --shadow-sm: 0 1px 4px rgba(0,0,0,.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,.06);
    --shadow-lg: 0 12px 35px rgba(0,0,0,.08);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --transition: .25s ease;
    --header-gradient: linear-gradient(135deg, #4F6EF7 0%, #7B5CFA 100%);
    --text-gradient: linear-gradient(135deg, #4F6EF7, #7B5CFA);
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

/* ========== 容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ========== 通用按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 22px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    transition: all var(--transition);
    text-decoration: none;
}
.btn:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    font-weight: 600;
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; border-color: var(--primary-dark); }

.btn-success { background: #48BB78; color: #fff; border-color: #48BB78; }
.btn-danger  { background: #F56565; color: #fff; border-color: #F56565; }
.btn-sm      { padding: 6px 14px; font-size: 13px; }
.btn-block   { width: 100%; }

/* ========== Header 头部 ========== */
.header {
    background: var(--header-gradient);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(79,110,247,.25);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 20px;
}
.logo {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 1px;
    white-space: nowrap;
}
.logo i { font-size: 26px; }

.nav-menu {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}
.nav-menu a {
    color: rgba(255,255,255,.8);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: all var(--transition);
    white-space: nowrap;
}
.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255,255,255,.15);
    color: #fff;
}

/* 搜索框 */
.search-box {
    display: flex;
    align-items: center;
    background: rgba(255,255,255,.18);
    border-radius: 10px;
    padding: 3px 4px;
    flex: 1;
    max-width: 360px;
    transition: background var(--transition);
}
.search-box:focus-within { background: rgba(255,255,255,.28); }
.search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    padding: 8px 14px;
    flex: 1;
    font-size: 14px;
    min-width: 0;
}
.search-box input::placeholder { color: rgba(255,255,255,.55); }
.search-box button {
    background: rgba(255,255,255,.22);
    border: none;
    color: #fff;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}
.search-box button:hover { background: rgba(255,255,255,.35); }

/* ========== Hero 区域 ========== */
.hero {
    background: var(--header-gradient);
    padding: 50px 0 70px;
    text-align: center;
    color: #fff;
}
.hero h1 {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 12px;
    text-shadow: 0 2px 12px rgba(0,0,0,.1);
}
.hero p {
    font-size: 16px;
    opacity: .9;
    margin-bottom: 32px;
}
.hero-search {
    max-width: 580px;
    margin: 0 auto;
    display: flex;
    background: #fff;
    border-radius: 14px;
    padding: 5px;
    box-shadow: 0 8px 40px rgba(0,0,0,.18);
}
.hero-search input {
    flex: 1;
    border: none;
    outline: none;
    padding: 14px 20px;
    font-size: 16px;
    border-radius: 10px;
    min-width: 0;
}
.hero-search button {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 14px 30px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}
.hero-search button:hover { background: var(--primary-dark); }

.hot-keywords {
    margin-top: 22px;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}
.hot-keywords a {
    background: rgba(255,255,255,.14);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 13px;
    transition: all var(--transition);
}
.hot-keywords a:hover { background: rgba(255,255,255,.28); }

/* ========== Section 区块 ========== */
.section { padding: 48px 0; }
.section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 10px;
}
.section-title h2 {
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}
.section-title h2 i { color: var(--primary); font-size: 20px; }
.section-title a { color: var(--primary); font-size: 14px; font-weight: 500; }
.section-title a:hover { color: var(--primary-dark); }

/* ========== 分类导航 ========== */
.cat-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.cat-nav a {
    background: var(--card);
    border: 1px solid var(--border);
    padding: 8px 20px;
    border-radius: 24px;
    font-size: 14px;
    transition: all var(--transition);
}
.cat-nav a:hover,
.cat-nav a.active {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 2px 10px rgba(79,110,247,.12);
}

/* ========== 网站卡片网格 ========== */
.site-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
}
.site-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 14px;
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
    display: block;
}
.site-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}
.favicon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    margin: 0 auto 10px;
    background: var(--header-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
}
.site-name {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
}
.site-desc {
    font-size: 12px;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ========== 精选推荐 ========== */
.featured-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}
.featured-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    gap: 14px;
    align-items: center;
    transition: all var(--transition);
}
.featured-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}
.fc-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    flex-shrink: 0;
}
.fc-info h4 { font-size: 15px; font-weight: 600; }
.fc-info p  { font-size: 12px; color: var(--text-light); margin-top: 3px; }

/* ========== 排行榜 ========== */
.rank-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border);
    flex-wrap: wrap;
}
.rank-tab {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    color: var(--text-light);
    transition: all var(--transition);
    background: none;
    border-left: none;
    border-right: none;
    border-top: none;
}
.rank-tab:hover { color: var(--primary); }
.rank-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}
.rank-list {
    background: var(--card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.rank-item {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid #f0f0f0;
    transition: background var(--transition);
}
.rank-item:last-child { border-bottom: none; }
.rank-item:hover { background: #F8FAFF; }
.rank-num {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    margin-right: 14px;
    flex-shrink: 0;
}
.rank-num.top1 { background: #FF6B6B; color: #fff; }
.rank-num.top2 { background: #FFA94D; color: #fff; }
.rank-num.top3 { background: #51CF66; color: #fff; }
.rank-num.normal { background: #EDF2F7; color: var(--text-light); }
.r-name { flex: 1; font-weight: 500; }
.r-clicks { color: var(--text-light); font-size: 13px; }

/* ========== 表单 ========== */
.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}
.form-container h2 {
    text-align: center;
    margin-bottom: 28px;
    font-size: 22px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    outline: none;
    transition: all var(--transition);
    font-family: inherit;
    background: #fff;
    color: var(--text);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79,110,247,.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* ========== 文章 ========== */
.article-list { display: grid; gap: 16px; }
.article-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: all var(--transition);
    display: block;
}
.article-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}
.article-item h3 { font-size: 18px; margin-bottom: 8px; }
.article-item .meta {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 10px;
}
.article-item p { color: #4A5568; font-size: 14px; }

.article-detail {
    max-width: 800px;
    margin: 0 auto;
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-sm);
}
.article-detail h1 { font-size: 28px; margin-bottom: 16px; line-height: 1.4; }
.article-detail .content { line-height: 1.9; font-size: 16px; color: #2D3748; }
.article-detail .content h3 { margin: 24px 0 12px; }

/* ========== About / Source ========== */
.about-box,
.source-box {
    max-width: 800px;
    margin: 0 auto;
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-sm);
}
.about-box h2, .source-box h2 { margin-bottom: 16px; }
.about-box p, .source-box p { margin-bottom: 12px; color: #4A5568; line-height: 1.8; }

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 10px;
    margin-top: 16px;
}
.feature-list li {
    background: #F7FAFC;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    list-style: none;
    border: 1px solid #EDF2F7;
}

/* ========== 广告位 ========== */
.ad-positions {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}
.ad-pos-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    text-align: center;
    transition: all var(--transition);
}
.ad-pos-card:hover { box-shadow: var(--shadow-md); }
.ad-pos-card .price {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    margin: 12px 0;
}

/* ========== 友情链接 ========== */
.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}
.link-item {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 14px;
    text-align: center;
    transition: all var(--transition);
    display: block;
}
.link-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* ========== 代码块 ========== */
.code-block {
    background: #1A202C;
    color: #E2E8F0;
    padding: 20px 24px;
    border-radius: var(--radius);
    font-family: "Fira Code", "Consolas", monospace;
    font-size: 13px;
    line-height: 2;
    overflow-x: auto;
}

/* ========== 提示框 ========== */
.notice-box {
    padding: 16px 20px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-top: 20px;
    line-height: 2;
}
.notice-blue   { background: #EBF8FF; color: #2B6CB0; }
.notice-green  { background: #F0FFF4; color: #276749; }
.notice-yellow { background: #FFFFF0; color: #975A16; }
.notice-red    { background: #FFF5F5; color: #C53030; }

/* ========== 分页 ========== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 28px;
    flex-wrap: wrap;
}
.pagination a,
.pagination span {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    border: 1px solid var(--border);
    transition: all var(--transition);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active,
.pagination .current {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ========== Footer 页脚 ========== */
.footer {
    background: #1A202C;
    color: #A0AEC0;
    padding: 48px 0 24px;
    margin-top: 60px;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}
.footer-col h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 14px;
}
.footer-col a {
    display: block;
    color: #A0AEC0;
    font-size: 13px;
    padding: 4px 0;
    transition: color var(--transition);
}
.footer-col a:hover { color: var(--primary); }
.footer-col p { font-size: 13px; line-height: 1.8; }
.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid #2D3748;
    font-size: 13px;
}

/* ========== Toast 提示 ========== */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 14px;
    z-index: 9999;
    animation: slideDown .3s ease;
    color: #fff;
    box-shadow: 0 4px 16px rgba(0,0,0,.15);
}
.toast.success { background: #48BB78; }
.toast.error   { background: #F56565; }
@keyframes slideDown {
    from { opacity: 0; transform: translate(-50%, -20px); }
    to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ========== 空状态 ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: .3;
    display: block;
}

/* ========== 响应式（统一由 responsive.css 管理） ========== */
/* 注意：所有断点规则已迁移至 public/static/css/responsive.css
   修改响应式样式请编辑该文件，避免双文件冲突。 */

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: #c1c9d6; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a0aec0; }

/* ========== 选中文本 ========== */
::selection { background: var(--primary); color: #fff; }

/* ========== 用户菜单（Header） ========== */
.user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 12px;
}
.user-btn {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    background: rgba(255,255,255,.15);
    backdrop-filter: blur(6px);
    transition: all .25s;
    white-space: nowrap;
}
.user-btn:hover {
    background: rgba(255,255,255,.3);
    color: #fff;
    transform: translateY(-1px);
}
.user-btn.register-btn {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    font-weight: 600;
}
.user-btn.register-btn:hover {
    background: linear-gradient(135deg, #FF8E53, #FF6B6B);
    box-shadow: 0 4px 15px rgba(255,107,107,.4);
}
.user-btn.logout-btn {
    padding: 8px 10px;
    background: rgba(255,107,107,.2);
}
.user-btn.logout-btn:hover {
    background: rgba(255,107,107,.5);
}

/* 暗黑模式适配 */
body.dark .user-btn {
    background: rgba(255,255,255,.1);
    color: #E2E8F0;
}
body.dark .user-btn:hover {
    background: rgba(255,255,255,.2);
    color: #fff;
}

/* 移动端规则见 responsive.css */