/* ========================================
   热盘搜 - 主样式表 (SEO-Friendly)
   ======================================== */

/* ---- 基础变量 ---- */
:root {
    --primary: #e53935;
    --primary-dark: #c62828;
    --primary-light: #ffebee;
    --accent: #ff6f00;
    --bg: #f5f7fa;
    --card-bg: #ffffff;
    --text: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border: #e8e8e8;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.2s ease;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --content-width: 1200px;
}

/* ---- 全局重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 15px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.container { max-width: var(--content-width); margin: 0 auto; padding: 0 20px; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }

/* ---- 头部 ---- */
.site-header {
    background: var(--card-bg);
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
}
.logo:hover { color: var(--primary); }
.logo-icon { font-size: 26px; }
.logo-text { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
    background: var(--primary-light);
    color: var(--primary);
}
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text);
    padding: 4px 8px;
}

/* ---- 面包屑 ---- */
.breadcrumb {
    padding: 16px 0;
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 4px; }
.breadcrumb .current { color: var(--text-secondary); font-weight: 500; }

/* ---- 搜索区域 ---- */
.search-section {
    background: linear-gradient(135deg, #e53935 0%, #ff6f00 100%);
    padding: 50px 20px 40px;
    text-align: center;
}
.search-section.home { padding: 70px 20px 50px; }
.search-title {
    color: #fff;
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 8px;
}
.search-subtitle {
    color: rgba(255,255,255,0.85);
    font-size: 15px;
    margin-bottom: 28px;
}
.search-box {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    background: #fff;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.search-input {
    flex: 1;
    border: none;
    padding: 16px 24px;
    font-size: 16px;
    outline: none;
    font-family: var(--font);
}
.search-btn {
    border: none;
    background: var(--primary);
    color: #fff;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.search-btn:hover { background: var(--primary-dark); }

/* 热门搜索词 */
.hot-search {
    max-width: 680px;
    margin: 16px auto 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}
.hot-search .hot-label { color: rgba(255,255,255,0.7); font-size: 13px; line-height: 28px; }
.hot-search a {
    background: rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.9);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 13px;
    transition: var(--transition);
}
.hot-search a:hover { background: rgba(255,255,255,0.35); color: #fff; }

/* ---- 分类导航 ---- */
.categories-section {
    padding: 32px 0 16px;
}
.section-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.section-title::before {
    content: '';
    display: block;
    width: 4px;
    height: 22px;
    background: var(--primary);
    border-radius: 2px;
}
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}
.category-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 18px 14px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    display: block;
}
.category-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}
.category-card .cat-icon { font-size: 32px; display: block; margin-bottom: 6px; }
.category-card .cat-name { font-size: 14px; color: var(--text); font-weight: 500; }
.category-card .cat-count { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* ---- 内容区域 ---- */
.site-content { flex: 1; padding-bottom: 40px; }
.content-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 24px;
    padding: 24px 0;
}
.content-full { padding: 24px 0; }

/* ---- 资源卡片 ---- */
.resource-list { display: flex; flex-direction: column; gap: 12px; }
.resource-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.resource-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.resource-card .rc-icon {
    font-size: 28px;
    min-width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}
.resource-card .rc-body { flex: 1; min-width: 0; }
.resource-card .rc-title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
    display: block;
    word-break: break-all;
}
.resource-card .rc-title:hover { color: var(--primary); }
.resource-card .rc-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.resource-card .rc-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12px;
    color: var(--text-muted);
    align-items: center;
}
.resource-card .rc-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }
.resource-card .tag {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--bg);
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.resource-card .rc-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    flex-shrink: 0;
}
.pan-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    color: #fff;
    font-weight: 500;
    white-space: nowrap;
}

/* ---- 侧边栏 ---- */
.sidebar > * {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}
.sidebar-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}
.hot-rank { list-style: none; }
.hot-rank li {
    padding: 8px 0;
    border-bottom: 1px solid #f5f5f5;
    font-size: 14px;
}
.hot-rank li:last-child { border: none; }
.hot-rank .rank-num {
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    border-radius: 4px;
    background: var(--bg);
    font-size: 12px;
    font-weight: 700;
    margin-right: 8px;
    color: var(--text-muted);
}
.hot-rank li:nth-child(-n+3) .rank-num {
    background: var(--primary);
    color: #fff;
}
.sidebar-stat { text-align: center; }
.sidebar-stat .big-num {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}
.sidebar-stat .small-label { font-size: 12px; color: var(--text-muted); }

/* ---- 详情页 ---- */
.detail-header {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px 32px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}
.detail-title { font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.detail-meta { display: flex; flex-wrap: wrap; gap: 16px; font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.detail-desc {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px 32px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 15px;
}
.pan-link-box {
    background: linear-gradient(135deg, var(--primary-light), #fff3e0);
    border-radius: var(--radius);
    padding: 24px 32px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}
.pan-link-box .pan-url {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 14px 18px;
    background: #fff;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    word-break: break-all;
    font-size: 14px;
    margin: 12px 0;
}
.pan-link-box .btn-copy {
    flex-shrink: 0;
    padding: 8px 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: var(--transition);
}
.pan-link-box .btn-copy:hover { background: var(--primary-dark); }
.access-code {
    display: inline-block;
    background: #fff;
    border: 1px dashed var(--primary);
    color: var(--primary);
    padding: 5px 14px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    margin: 6px 0;
}

/* ---- 提交页 ---- */
.submit-card {
    max-width: 680px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}
.submit-card h2 { font-size: 22px; margin-bottom: 24px; text-align: center; }
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}
.form-group input[type="text"],
.form-group input[type="url"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font);
    transition: var(--transition);
    background: var(--card-bg);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(229,57,53,0.1);
}
.btn-primary {
    display: block;
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; }
.msg { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 14px; }
.msg-success { background: #f6ffed; border: 1px solid #b7eb8f; color: #389e0d; }
.msg-error { background: #fff2f0; border: 1px solid #ffccc7; color: #cf1322; }

/* ---- 分页 ---- */
.pagination { margin-top: 24px; }
.pagination ul { display: flex; gap: 6px; list-style: none; flex-wrap: wrap; justify-content: center; align-items: center; }
.pagination li a {
    display: block;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.pagination li a:hover { border-color: var(--primary); color: var(--primary); }
.pagination li.active a {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.pagination li.info span { font-size: 13px; color: var(--text-muted); padding: 8px; }

/* ---- 筛选栏 ---- */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}
.filter-bar select {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: #fff;
    cursor: pointer;
    font-family: var(--font);
}
.filter-bar .filter-btn {
    padding: 8px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: #fff;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}
.filter-bar .filter-btn:hover, .filter-bar .filter-btn.active {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* ---- 网站公告 ---- */
.site-announcement {
    background: #fffbe6;
    border-top: 1px solid #ffe58f;
    border-bottom: 1px solid #ffe58f;
    padding: 10px 0;
    font-size: 13px;
    color: #ad6800;
}
.site-announcement .container { display: flex; align-items: center; gap: 8px; }
.ann-icon { font-size: 14px; }

/* ---- 页脚 ---- */
.site-footer {
    background: #2c2c2c;
    color: #aaa;
    padding: 40px 0 24px;
    margin-top: auto;
}
.footer-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid #444;
}
.footer-stats .stat-item { text-align: center; }
.footer-stats .stat-num { display: block; font-size: 24px; font-weight: 700; color: #fff; }
.footer-stats .stat-label { font-size: 12px; color: #888; margin-top: 4px; }
.footer-links { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.footer-links a { color: #aaa; font-size: 13px; }
.footer-links a:hover { color: #fff; }
.footer-copy { text-align: center; font-size: 12px; color: #666; line-height: 1.8; }

/* ---- 空状态 ---- */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .empty-icon { font-size: 56px; margin-bottom: 16px; }
.empty-state p { font-size: 15px; }

/* ---- 管理后台 ---- */
.admin-wrapper { max-width: 900px; margin: 0 auto; }
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.admin-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.admin-table th, .admin-table td { padding: 12px 16px; text-align: left; font-size: 13px; border-bottom: 1px solid var(--border); }
.admin-table th { background: #fafafa; font-weight: 600; color: var(--text-secondary); }
.admin-table tr:hover td { background: #fafafa; }
.admin-table .actions { display: flex; gap: 8px; }
.admin-table .btn-sm {
    padding: 4px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
    background: #fff;
}
.btn-sm-del { color: #cf1322; border-color: #ffccc7; }
.btn-sm-del:hover { background: #fff2f0; }
.btn-sm-edit { color: var(--primary); border-color: #ffa39e; }
.btn-sm-edit:hover { background: var(--primary-light); }
.login-card { max-width: 400px; margin: 60px auto; }

/* ---- 响应式 ---- */
@media (max-width: 768px) {
    .container { padding: 0 14px; }
    .mobile-menu-btn { display: block; }
    .main-nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 8px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    .main-nav.open { display: flex; }
    .nav-link { padding: 12px 16px; width: 100%; border-radius: 0; }
    .search-section.home { padding: 40px 14px 30px; }
    .search-title { font-size: 22px; }
    .search-box { flex-direction: column; border-radius: var(--radius-sm); }
    .search-input { padding: 14px 18px; }
    .search-btn { padding: 14px; border-radius: 0 0 var(--radius-sm) var(--radius-sm); }
    .content-grid { grid-template-columns: 1fr; }
    .sidebar { order: -1; }
    .category-grid { grid-template-columns: repeat(4, 1fr); }
    .resource-card { padding: 14px 16px; }
    .resource-card .rc-right { display: none; }
    .pan-badge { font-size: 11px; padding: 3px 8px; }
    .footer-stats { gap: 24px; }
    .detail-header, .detail-desc, .pan-link-box { padding: 16px 20px; }
    .admin-table { font-size: 12px; }
    .admin-table th, .admin-table td { padding: 8px 10px; }
}

@media (max-width: 480px) {
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .search-title { font-size: 20px; }
    .detail-title { font-size: 18px; }
    .filter-bar { gap: 6px; }
    .submit-card { padding: 20px 16px; }
}