/* ============================================================
   潍坊网址导航 - 前台样式
   设计理念：简洁大气、清爽现代、响应式自适应
   ============================================================ */

:root {
    --primary: #2B5CE6;
    --primary-dark: #1E46C0;
    --primary-light: #EEF3FF;
    --bg: #F5F7FB;
    --card-bg: #FFFFFF;
    --text-main: #1A2233;
    --text-sub: #6B7280;
    --text-light: #9CA3AF;
    --border: #E8ECF3;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --shadow-sm: 0 1px 3px rgba(16, 24, 40, .06);
    --shadow-md: 0 4px 16px rgba(16, 24, 40, .08);
    --shadow-lg: 0 12px 32px rgba(16, 24, 40, .12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --header-h: 64px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============ 顶部导航 ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 20px;
    height: var(--header-h);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo-icon { font-size: 28px; line-height: 1; }

.logo-text {
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), #7C3AED);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    white-space: nowrap;
}

.search-box {
    flex: 1;
    display: flex;
    align-items: center;
    max-width: 560px;
    margin: 0 auto;
    background: var(--bg);
    border: 2px solid transparent;
    border-radius: 999px;
    padding: 0 6px 0 16px;
    transition: all .25s ease;
}

.search-box:focus-within {
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(43, 92, 230, .12);
}

.search-icon { color: var(--text-light); flex-shrink: 0; }

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 15px;
    padding: 10px 12px;
    color: var(--text-main);
    min-width: 0;
}

.search-box input::placeholder { color: var(--text-light); }

.search-btn {
    flex-shrink: 0;
    padding: 8px 22px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    transition: background .2s;
}

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

.admin-link {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 14px;
    color: var(--text-sub);
    border: 1px solid var(--border);
    transition: all .2s;
}

.admin-link:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-light);
}

/* ============ 主视觉区 ============ */
.hero {
    position: relative;
    padding: 64px 0 48px;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(180deg, #EBF1FF 0%, var(--bg) 100%);
}

.hero-deco {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: .5;
    pointer-events: none;
}

.hero-deco-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #C7D8FF, transparent 70%);
    top: -150px;
    left: -100px;
}

.hero-deco-2 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, #E4D4FF, transparent 70%);
    bottom: -150px;
    right: -80px;
}

.hero-title {
    position: relative;
    font-size: clamp(32px, 5vw, 44px);
    font-weight: 800;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #1A2B6B 0%, var(--primary) 60%, #7C3AED 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    position: relative;
    margin-top: 12px;
    font-size: clamp(14px, 2vw, 16px);
    color: var(--text-sub);
}

.hero-stats {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-num {
    font-size: 30px;
    font-weight: 800;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.stat-label { font-size: 13px; color: var(--text-light); }

.announcement {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 28px;
    padding: 10px 24px;
    background: #FFF9E6;
    border: 1px solid #FDE9B8;
    border-radius: 999px;
    font-size: 14px;
    color: #92600A;
    max-width: 90%;
}

/* ============ 推荐快捷 ============ */
.hot-section { padding: 8px 0 24px; }

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-bar {
    width: 4px;
    height: 20px;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--primary), #7C3AED);
}

.hot-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.hot-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 20px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all .25s ease;
}

.hot-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.hot-favicon { border-radius: 6px; }

.hot-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
}

.hot-desc {
    font-size: 12px;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
}

/* ============ 主体布局 ============ */
.main-content { padding: 12px 0 48px; }

.layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
    align-items: start;
}

/* 侧边栏 */
.sidebar { position: sticky; top: calc(var(--header-h) + 16px); }

.sidebar-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.sidebar-card + .sidebar-card { margin-top: 16px; }

.sidebar-head {
    padding: 14px 18px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-sub);
    border-bottom: 1px solid var(--border);
    background: #FAFBFD;
}

.cat-nav { display: flex; flex-direction: column; padding: 8px; }

.cat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-main);
    transition: all .18s;
}

.cat-item:hover { background: var(--primary-light); color: var(--primary); }

.cat-item.active {
    background: var(--primary);
    color: #fff;
    font-weight: 600;
}

.cat-count {
    font-size: 12px;
    color: var(--text-light);
    background: var(--bg);
    padding: 1px 8px;
    border-radius: 999px;
    font-variant-numeric: tabular-nums;
}

.cat-item.active .cat-count { background: rgba(255,255,255,.2); color: #fff; }

.sidebar-tip .tip-body {
    padding: 14px 18px;
    font-size: 13px;
    color: var(--text-sub);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ============ 链接区域 ============ */
.result-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding: 12px 18px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-sub);
}

.result-bar b { color: var(--primary); }

.clear-search {
    color: var(--danger);
    font-size: 13px;
    padding: 4px 10px;
    border-radius: 6px;
}

.clear-search:hover { background: #FEF2F2; }

.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 14px;
}

.link-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all .25s ease;
    position: relative;
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    inset: 0 auto 0 0;
    width: 3px;
    background: transparent;
    transition: background .25s;
}

.link-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: #C9D7F5;
}

.link-card:hover::before { background: var(--primary); }

.link-card.is-broken {
    background: #FFFBFA;
    border-color: #FBD5D5;
}

.link-card.is-broken::before { background: var(--danger); }

.link-card-top {
    display: flex;
    align-items: center;
    gap: 12px;
}

.link-favicon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    flex-shrink: 0;
    background: var(--primary-light);
}

.link-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.link-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rec-star {
    font-style: normal;
    color: #F59E0B;
    font-size: 12px;
    flex-shrink: 0;
}

.link-domain {
    font-size: 12px;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.link-desc {
    font-size: 13px;
    color: var(--text-sub);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 40px;
}

.link-card-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
}

.link-cat {
    font-size: 12px;
    color: var(--text-light);
    background: var(--bg);
    padding: 2px 10px;
    border-radius: 999px;
}

.badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 500;
}

.badge-ok { background: #ECFDF5; color: #059669; }
.badge-warning { background: #FFFBEB; color: #D97706; }
.badge-broken { background: #FEF2F2; color: #DC2626; }

/* ============ 空状态 ============ */
.empty-box {
    text-align: center;
    padding: 80px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.empty-icon { font-size: 56px; margin-bottom: 16px; }

.empty-box p { font-size: 16px; font-weight: 600; color: var(--text-main); }

.empty-sub { font-size: 13px; color: var(--text-light) !important; font-weight: 400 !important; margin-top: 4px; }

.btn-back {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 32px;
    background: var(--primary);
    color: #fff;
    border-radius: 999px;
    font-size: 14px;
    transition: background .2s;
}

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

/* ============ 分页 ============ */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 28px;
    flex-wrap: wrap;
}

.page-btn {
    padding: 8px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-main);
    transition: all .2s;
}

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

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

.page-dots { color: var(--text-light); }

/* ============ 页脚 ============ */
.site-footer {
    padding: 36px 0;
    border-top: 1px solid var(--border);
    background: #FAFBFD;
    text-align: center;
}

.footer-brand { font-size: 18px; font-weight: 700; color: var(--text-main); }

.footer-text { margin-top: 8px; font-size: 14px; color: var(--text-sub); }

.footer-meta { margin-top: 8px; font-size: 12px; color: var(--text-light); }

.footer-meta a { color: var(--text-light); text-decoration: underline; }

.footer-copyright { margin-top: 6px; font-size: 12px; color: var(--text-light); }

.dot { color: var(--border); margin: 0 2px; }

/* 友情链接 */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px;
    max-width: 900px;
    margin: 0 auto 22px;
    padding: 16px 18px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.fl-label { font-size: 13px; font-weight: 700; color: var(--text-sub); }

.fl-item {
    font-size: 13px;
    color: var(--text-sub);
    padding: 4px 12px;
    background: var(--bg);
    border-radius: 999px;
    transition: all .2s;
}

.fl-item:hover { color: var(--primary); background: var(--primary-light); }

.fl-apply {
    color: var(--primary);
    border: 1px dashed var(--primary);
    background: transparent;
    font-weight: 600;
}

.fl-apply:hover { background: var(--primary-light); }

/* 申请友链弹层 */
.fl-apply-box {
    display: none;
    max-width: 640px;
    margin: 18px auto 0;
    padding: 18px 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    text-align: left;
}

.fl-apply-box.open { display: block; }

.fl-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    align-items: center;
}

.fl-form-title {
    grid-column: 1 / -1;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
}

.fl-form input {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    outline: none;
    transition: border-color .2s;
}

.fl-form input:focus { border-color: var(--primary); }

.fl-form button {
    grid-column: 1 / -1;
    padding: 10px;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: background .2s;
}

.fl-form button:hover { background: var(--primary-dark); }
.fl-form button:disabled { opacity: .6; cursor: default; }

.fl-msg {
    grid-column: 1 / -1;
    font-size: 13px;
    min-height: 18px;
}

.fl-msg.ok { color: var(--success); }
.fl-msg.err { color: var(--danger); }

/* ============ 顶部信息条（时间 + 天气） ============ */
.topbar {
    background: linear-gradient(135deg, #16213E 0%, #1E2D5C 100%);
    color: #E6ECFF;
    font-size: 13px;
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 36px;
    gap: 12px;
}

.topbar-left, .topbar-right {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.topbar-loc { opacity: .9; white-space: nowrap; }

.topbar-date { opacity: .85; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.topbar-clock {
    font-variant-numeric: tabular-nums;
    font-weight: 600;
    letter-spacing: .5px;
    color: #fff;
}

.topbar-weather {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
    padding: 2px 10px;
    background: rgba(255, 255, 255, .12);
    border-radius: 999px;
}

.topbar-weather .wf-loading { opacity: .8; }

.topbar-weather .wf-temp { font-weight: 600; color: #fff; }

/* ============ 返回顶部 ============ */
.back-top {
    position: fixed;
    right: 24px;
    bottom: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-size: 18px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: all .3s ease;
    z-index: 99;
}

.back-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-top:hover { background: var(--primary-dark); }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
    .layout { grid-template-columns: 200px 1fr; gap: 16px; }
    .hot-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    :root { --header-h: 56px; }

    .header-inner { gap: 10px; }
    .logo-text { display: none; }
    .logo-icon { font-size: 24px; }
    .search-btn { padding: 7px 16px; font-size: 13px; }

    .topbar-inner { height: auto; padding: 6px 0; flex-direction: column; gap: 4px; }
    .topbar-left, .topbar-right { gap: 10px; flex-wrap: wrap; justify-content: center; }
    .topbar-date { display: none; }

    .fl-form { grid-template-columns: 1fr; }

    .hero { padding: 40px 0 36px; }
    .hero-stats { gap: 28px; }
    .stat-num { font-size: 24px; }

    .hot-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }

    /* 移动端分类横向滚动 */
    .layout { grid-template-columns: 1fr; }

    .sidebar {
        position: static;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .sidebar-card { display: flex; border: none; box-shadow: none; background: transparent; }

    .sidebar-head { display: none; }

    .cat-nav {
        flex-direction: row;
        gap: 8px;
        padding: 4px 0;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .cat-nav::-webkit-scrollbar { display: none; }

    .cat-item {
        flex-shrink: 0;
        background: var(--card-bg);
        border: 1px solid var(--border);
        padding: 8px 14px;
        white-space: nowrap;
    }

    .sidebar-tip { display: none; }

    .link-grid { grid-template-columns: 1fr; }

    .back-top { right: 16px; bottom: 20px; width: 40px; height: 40px; }
}

@media (max-width: 480px) {
    .container { padding: 0 14px; }
    .hero-title { font-size: 26px; }
    .hot-grid { grid-template-columns: repeat(2, 1fr); }
    .hot-card { padding: 14px 8px; }
    .hot-desc { display: none; }
    .announcement { font-size: 12px; padding: 8px 14px; }
    .friend-links { padding: 12px; }
    .fl-item { font-size: 12px; padding: 3px 9px; }
}

/* 深色模式跟随（可选增强） */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; }
}