/* ============================================================
 * FlaskCMS 全站样式汇总
 * 加载此文件即可，无需各页面内联 <style>
 * ============================================================ */


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


/* ===== 前台公共（index / list / content / search / page 共用）===== */
body{min-height:100vh;background-repeat:no-repeat;background-position:center;background-size:cover;background-attachment:fixed;padding-bottom:60px;}

.time-box{position:fixed;top:20px;right:25px;color:#fff;font-size:16px;letter-spacing:1px;z-index:99;white-space:nowrap;}

.float-tool{position:fixed;right:20px;bottom:100px;z-index:100;display:flex;flex-direction:column;gap:10px;}
.float-item{width:44px;height:44px;line-height:44px;text-align:center;background:rgba(255,255,255,0.15);backdrop-filter:blur(8px);border-radius:50%;color:#fff;font-size:18px;cursor:pointer;transition:all .2s;}
.float-item:hover{background:#1e9fff;transform:scale(1.05);}

.main-container{display:flex;min-height:100vh;padding:0 20px;position:relative;}
.left-side{position:fixed;top:10px;left:0;width:33.333%;height:auto;display:flex;flex-direction:column;align-items:center;padding:0 20px;z-index:90;}
.right-side{width:66.666%;margin-left:33.333%;padding:90px 30px 20px;}

.logo-box{text-align:center;margin-bottom:20px;}
.logo-item{display:inline-flex;align-items:center;gap:12px;}
.logo-box img{height:60px;max-width:100%;}
.logo-text{font-size:32px;color:#fff;font-weight:bold;letter-spacing:4px;text-shadow:0 2px 10px rgba(0,0,0,0.3);}

.search-wrap{width:100%;max-width:450px;padding:20px;background:rgba(255,255,255,0.15);backdrop-filter:blur(10px);border-radius:12px;margin-bottom:15px;}
.engine-radio{margin-bottom:15px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.engine-radio .layui-form-radio{margin:0!important;padding-right:10px;color:#fff;font-size:14px;}
.engine-radio .layui-form-radio i{border-color:rgba(255,255,255,0.7);}
/* 选中态去除蓝色填充背景，仅把圆圈边框提亮为纯白以保持区分 */
.engine-radio .layui-form-radioed i{background:transparent!important;border-color:#fff!important;}
.hot-tags{width:100%;max-width:450px;padding:10px 20px;background:rgba(255,255,255,0.1);backdrop-filter:blur(10px);border-radius:12px;}
.hot-tags-title{color:#fff;font-size:14px;margin-bottom:8px;display:flex;align-items:center;}
.hot-tags-title i{margin-right:6px;font-size:16px;}
.tags-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag-item{padding:4px 12px;background:rgba(255,255,255,0.2);color:#fff;border-radius:16px;font-size:13px;cursor:pointer;transition:all .2s;}
.tag-item:hover{background:rgba(255,255,255,0.3);transform:translateY(-2px);}
.search-input-box{position:relative;}
.search-input-box .layui-input{padding-right:100px;height:46px;border-radius:8px;}
.inner-search-btn{position:absolute;right:6px;top:50%;transform:translateY(-50%);height:36px;line-height:36px;padding:0 15px;border-radius:6px;}
.layui-form-item{margin-bottom:0;}

.right-card{background:rgba(255,255,255,0.15);backdrop-filter:blur(10px);border-radius:12px;padding:20px;margin-bottom:20px;}
.category-nav{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px;}
.category-item{padding:6px 15px;background:rgba(255,255,255,0.2);color:#fff;border-radius:6px;cursor:pointer;transition:all .2s;text-decoration:none;}
.category-item.active,.category-item:hover{background:#1e9fff;}

.footer{position:fixed;left:0;bottom:0;width:100%;padding:10px 15px;background:rgba(0,0,0,0.3);backdrop-filter:blur(8px);text-align:center;color:rgba(255,255,255,0.7);font-size:13px;z-index:98;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.footer span{margin:0 5px;}
.footer a{color:rgba(255,255,255,0.8);text-decoration:none;margin:0 4px;cursor:pointer;}
.footer a:hover{color:#fff;}

.empty{text-align:center;color:rgba(255,255,255,0.6);padding:40px 0;}
.pager{display:flex;justify-content:center;gap:6px;margin-top:20px;flex-wrap:wrap;}
.pager a,.pager span{padding:6px 14px;background:rgba(255,255,255,0.15);color:#fff;border-radius:6px;text-decoration:none;font-size:14px;backdrop-filter:blur(6px);}
.pager a:hover{background:rgba(255,255,255,0.3);}
.pager .active{background:#1e9fff;}
.pager .disabled{opacity:.4;pointer-events:none;}


/* ===== 页面背景 =====
   背景图完全由后台「背景图管理」控制：
   - 管理员启用的图片，前台 JS 随机选一张做全屏背景；
   - 全部禁用或未上传时，不显示任何背景图，也没有兜底图片。
   （因此此处不再预置兜底 CSS 背景）*/


/* ===== 首页（page-index）：全屏无滚动条 =====
   移除最新文章/热门推荐双栏后，logo+搜索+热点标签整体垂直居中；
   通过加大底部 padding 把居中点上推 100px，整体向上偏移呈现适中位置。
   搜索框尺寸与搜索页/分类页保持一致（input 46px / 按钮 36px / padding-right 100px）。*/
body.page-index{height:100vh;overflow:hidden;display:flex;flex-direction:column;justify-content:center;padding-top:0;padding-bottom:146px;}
.page-index .logo-box{padding:0 20px 1.5vh;margin-bottom:0;}
.page-index .logo-box img{height:46px;}
.page-index .search-wrap{width:90%;max-width:650px;margin:0 auto;padding:14px 20px;}
/* 去除站内搜索输入框聚焦时的蓝色阴影/边框，融入毛玻璃背景 */
.page-index .search-wrap .layui-input,
.page-index .search-wrap .layui-input:focus{outline:none!important;box-shadow:none!important;border-color:rgba(255,255,255,0.4)!important;}
.page-index .hot-tags{width:90%;max-width:650px;margin:10px auto 0;padding:8px 18px;}
.page-index .hot-tags-title{font-size:13px;margin-bottom:6px;}
.page-index .tag-item{padding:3px 10px;font-size:12px;}
.slide-menu{position:fixed;right:0;top:50%;transform:translateY(-50%);z-index:99;}
/* menu-main 高度只由 toggle 按钮决定；菜单列表绝对定位浮在下方，
   保证展开/收起两种状态下右侧栏主体高度一致。*/
.menu-main{position:relative;width:80px;background:rgba(255,255,255,0.15);backdrop-filter:blur(8px);border-radius:10px 0 0 10px;transition:width .3s ease;}
.menu-main.close{width:40px;}
.menu-toggle{text-align:center;color:#fff;cursor:pointer;font-size:18px;padding:5px 0;user-select:none;}
.menu-list{position:absolute;top:100%;right:0;width:100%;list-style:none;margin:8px 0 0;padding:0;background:rgba(255,255,255,0.15);backdrop-filter:blur(8px);border-radius:0 0 0 10px;transition:opacity .3s;}
.menu-list li{line-height:40px;}
.menu-list li a{color:#fff;text-decoration:none;font-size:15px;display:block;text-align:center;border-radius:6px;}
.menu-list li a:hover{background:rgba(255,255,255,0.2);}
.menu-main.close .menu-list{opacity:0;pointer-events:none;}

/* 首页响应式：≤992px 降低底部占位；≤480px 进一步居中并缩小组件 */
@media(max-width:992px){
  body.page-index{padding-top:0;padding-bottom:86px;}
  .page-index .search-wrap{width:92%;max-width:560px;padding:12px 16px;}
  .page-index .hot-tags{width:92%;max-width:560px;}
}
@media(max-width:720px){
  body.page-index{padding-top:0;padding-bottom:20px;}
  .page-index .logo-box .logo-item{gap:8px;}
  .page-index .logo-box img{height:40px;}
  .page-index .search-wrap{padding:12px 14px;}
  .page-index .engine-radio{gap:4px 8px;margin-bottom:10px;}
  .page-index .engine-radio .layui-form-radio{font-size:13px!important;padding-right:8px!important;}
  .page-index .search-wrap .search-input-box .layui-input{height:44px;font-size:15px;}
  .page-index .search-wrap .search-input-box .inner-search-btn{height:38px;line-height:38px;padding:0 12px;}
  .page-index .hot-tags{padding:8px 14px;}
  .page-index .hot-tags-title{font-size:12px;margin-bottom:4px;}
  .page-index .tag-item{font-size:11px;padding:3px 9px;}
}
@media(max-width:480px){
  body.page-index{padding-bottom:0;}
  .page-index .logo-text{font-size:22px;}
}


/* ===== 列表页（page-list）特有 ===== */
.page-list .category-title{font-size:18px;color:#fff;margin-bottom:15px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,0.2);}
.article-item{display:flex;gap:15px;padding:15px 0;border-bottom:1px solid rgba(255,255,255,0.1);text-decoration:none;}
.article-item:last-child{border-bottom:none;}
.page-list .article-cover{width:120px;height:90px;border-radius:8px;object-fit:cover;flex-shrink:0;}
.page-list .article-content{flex:1;color:#fff;display:flex;flex-direction:column;justify-content:center;}
.page-list .article-title{font-size:16px;font-weight:500;margin-bottom:6px;color:#fff;line-height:1.4;}
.page-list .article-title:hover{color:#1e9fff;}
.page-list .article-info{font-size:12px;color:rgba(255,255,255,0.7);margin-bottom:6px;display:flex;gap:15px;}
.page-list .article-desc{font-size:13px;color:rgba(255,255,255,0.8);line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.article-read{font-size:12px;color:#1e9fff;cursor:pointer;}


/* ===== 详情页（page-detail）特有 ===== */
.page-detail .right-card{padding:30px;color:#fff;}
.page-detail .category-nav{margin-bottom:20px;}
.page-detail .article-title{font-size:24px;font-weight:bold;text-align:center;margin-bottom:15px;line-height:1.4;}
.page-detail .article-info{text-align:center;font-size:13px;color:rgba(255,255,255,0.7);margin-bottom:25px;display:flex;justify-content:center;gap:20px;flex-wrap:wrap;}
.page-detail .article-cover{width:100%;max-height:400px;object-fit:cover;border-radius:10px;margin-bottom:25px;}
.page-detail .article-content{font-size:16px;line-height:1.9;color:rgba(255,255,255,0.92);display:block;}
.page-detail .article-content p{margin-bottom:20px;text-align:justify;}
.page-detail .article-content h2,.page-detail .article-content h3{margin:30px 0 15px;color:#fff;}
.page-detail .article-content h2{font-size:20px;}
.page-detail .article-content h3{font-size:18px;}
.page-detail .article-content img{max-width:100%;border-radius:8px;margin:10px 0;}
.page-detail .article-content a{color:#1e9fff;}
.page-detail .article-content code{background:rgba(0,0,0,0.3);padding:2px 6px;border-radius:4px;font-size:14px;}
.page-detail .article-content pre{background:rgba(0,0,0,0.4);padding:15px;border-radius:8px;overflow-x:auto;margin-bottom:20px;}
.recommend-box{background:rgba(255,255,255,0.15);backdrop-filter:blur(10px);border-radius:12px;padding:20px;margin-top:20px;}
.recommend-title{font-size:18px;color:#fff;margin-bottom:15px;padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,0.2);}
.recommend-item{padding:10px 0;color:rgba(255,255,255,0.85);cursor:pointer;border-bottom:1px solid rgba(255,255,255,0.1);text-decoration:none;display:block;}
.recommend-item:hover{color:#1e9fff;}


/* ===== 桌面端（>992px）：list/search/detail/page 整页一屏，右栏内部滚动 =====
   body 与 main-container 锁定 100vh + overflow:hidden，整页不出现滚动条；
   右栏 .right-side 自己 overflow-y:auto，内容少无滚动条，内容多右栏内部滚动，
   左栏 fixed 与 footer fixed 始终不动。 */
@media(min-width:993px){
  body.page-list, body.page-detail { height: 100vh; overflow: hidden; padding-bottom: 0; }
  body.page-list .main-container, body.page-detail .main-container { height: 100vh; min-height: 0; overflow: hidden; }
  body.page-list .right-side, body.page-detail .right-side {
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 90px 30px 60px;  /* 底部 60px 给 fixed footer 留位，避免内容被遮 */
    -webkit-overflow-scrolling: touch;
  }
  /* 滚动条美化：细条 + 半透明，融入毛玻璃背景 */
  body.page-list .right-side::-webkit-scrollbar,
  body.page-detail .right-side::-webkit-scrollbar { width: 6px; }
  body.page-list .right-side::-webkit-scrollbar-thumb,
  body.page-detail .right-side::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.25); border-radius: 3px; }
  body.page-list .right-side::-webkit-scrollbar-thumb:hover,
  body.page-detail .right-side::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.4); }
  body.page-list .right-side::-webkit-scrollbar-track,
  body.page-detail .right-side::-webkit-scrollbar-track { background: transparent; }
}

/* ===== 前台响应式 =====
   三档断点：≤992px 平板竖屏；≤720px 大屏手机；≤480px 小屏手机。
   目标：所有前台页面（list/search/detail/page）移动端双栏→单列，
   栏目导航可横向滑动，footer 自动换行，触控按钮 44px 可点区。*/

/* ===== 平板竖屏（≤992px）：双栏改单列，左栏定位由 fixed → 文档流 ===== */
@media(max-width:992px){
  .main-container{flex-direction:column;padding:0 12px;}
  .left-side,.right-side{width:100%;margin:0;padding:0;}
  .left-side{position:static;padding-top:42px;padding-bottom:18px;}
  .right-side{padding:0 0 24px;}
  .search-wrap{max-width:100%;}
  .hot-tags{max-width:100%;}
  .float-tool{right:10px;bottom:72px;}
  .float-item{width:44px;height:44px;line-height:44px;font-size:18px;}
  .page-list .right-card,.page-detail .right-card,.recommend-box{padding:16px;}
  .page-detail .article-title{font-size:22px;}
  .page-detail .article-content{font-size:15px;line-height:1.8;}
  /* 栏目导航横向滑动，避免换行堆叠 */
  .category-nav{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px;}
  .category-nav .category-item{flex:0 0 auto;white-space:nowrap;}
}

/* ===== 大屏手机（≤720px）：进一步压缩间距与字号 ===== */
@media(max-width:720px){
  .main-container{padding:0 10px;}
  .time-box{position:static;width:100%;text-align:center;font-size:14px;color:#fff;padding:10px 12px 0;}
  .left-side{padding-top:16px;padding-bottom:14px;}
  .logo-box{margin-bottom:14px;}
  .search-wrap{padding:14px;margin-bottom:10px;}
  .hot-tags{padding:10px 14px;margin:0;}
  .engine-radio{gap:4px 8px;margin-bottom:10px;}
  .engine-radio .layui-form-radio{font-size:13px;padding-right:8px!important;}
  .right-card{padding:14px!important;border-radius:10px;margin-bottom:14px;}
  .category-title{font-size:16px!important;margin-bottom:12px!important;}
  /* 文章列表：改为上下结构（图片占满宽） */
  .article-item{flex-direction:column;gap:10px;}
  .article-item .article-cover{width:100%;height:auto;aspect-ratio:16/9;border-radius:8px;}
  .article-item .article-title{font-size:15px;}
  .article-item .article-info{flex-wrap:wrap;gap:8px!important;}
  /* footer 允许换行，不再 nowrap 溢出 */
  .footer{position:static;width:auto;font-size:12px;padding:10px 12px;line-height:1.8;white-space:normal;overflow:visible;}
  .footer span{margin:0 3px;opacity:.7;}
  .pager{gap:4px;margin-top:16px;}
  .pager a,.pager span{padding:5px 10px;font-size:13px;}
}

/* ===== 小屏手机（≤480px）：最小字号微调，触控保证 44px ===== */
@media(max-width:480px){
  .logo-box img{height:44px;}
  .logo-text{font-size:24px;letter-spacing:2px;}
  .search-input-box .layui-input{height:44px;font-size:15px;}
  .search-input-box .inner-search-btn{height:38px;line-height:38px;padding:0 12px;}
  .right-card{padding:12px!important;}
  .page-detail .article-title{font-size:19px;margin-bottom:12px;}
  .page-detail .article-info{font-size:12px;gap:8px 10px!important;}
  .page-detail .article-cover{border-radius:8px;margin-bottom:16px;}
  .page-detail .article-content{font-size:14px;line-height:1.8;}
  .page-detail .article-content h2{font-size:17px;}
  .page-detail .article-content h3{font-size:15px;}
  .article-item .article-title{font-size:14px;}
  .article-item .article-desc{font-size:12px;}
  .tag-item{padding:3px 10px;font-size:12px;}
  .page-index .hot-tags{margin-top:8px;padding:6px 14px;}
  .page-index .hot-tags-title{font-size:12px;margin-bottom:4px;}
  .page-index .tag-item{font-size:11px;}
  .float-tool{right:8px;bottom:64px;}
  .float-item{width:40px;height:40px;line-height:40px;font-size:17px;}
  .time-box{font-size:13px;}
}


/* ============================================================
 * 后台
 * ============================================================ */

/* ----- 后台公共 ----- */
body.page-admin{background:#f0f2f5;}
.layui-layout-admin .layui-header{background:linear-gradient(90deg,#001529,#003366);box-shadow:0 2px 8px rgba(0,21,41,0.15);}
.layui-layout-admin .layui-header .layui-nav .layui-nav-item a{color:#fff;transition:background .2s;}
.layui-layout-admin .layui-header .layui-nav .layui-nav-item a:hover{background:rgba(255,255,255,0.1);}
.layui-logo{position:absolute;left:0;top:0;width:200px;height:60px;line-height:60px;text-align:center;color:#fff;font-size:18px;font-weight:bold;background:linear-gradient(90deg,#002140,#003a6b);overflow:hidden;}
.layui-logo #sidebarToggle{position:absolute;left:0;top:0;width:40px;height:60px;line-height:60px;cursor:pointer;text-align:center;font-size:18px;}
.layui-logo #sidebarToggle:hover{background:#1890ff;}
.layui-logo .logo-text-full,.layui-logo .logo-text-mini{display:inline-block;}
.layui-logo .logo-text-mini{display:none;}
.layui-side{background:#001529;transition:width .28s;}
.layui-side .layui-nav{background:#001529;padding:8px 0;}
.layui-side .layui-nav .layui-nav-item{margin:2px 0;}
.layui-side .layui-nav .layui-nav-item a{color:rgba(255,255,255,0.78);transition:all .2s;border-left:3px solid transparent;margin:0 8px;border-radius:4px;}
.layui-side .layui-nav .layui-nav-item a:hover{color:#fff;background:rgba(24,144,255,0.15);border-left-color:#1890ff;}
.layui-side .layui-nav .layui-nav-item.layui-this > a{color:#fff;background:linear-gradient(90deg,rgba(24,144,255,0.25),rgba(24,144,255,0.05));border-left-color:#1890ff;}
.layui-side .layui-nav-tree .layui-nav-child dd.layui-this,
.layui-side .layui-nav-tree .layui-nav-child dd.layui-this a{background:rgba(24,144,255,0.2);color:#fff;}
.layui-body{left:200px;transition:left .28s;}
.layui-body .layui-card{margin:16px;border:none;border-radius:8px;box-shadow:0 1px 4px rgba(0,21,41,0.06);}
.layui-body .layui-card-header{font-weight:600;color:#333;font-size:16px;border-bottom:1px solid #f0f0f0;padding:14px 20px;}
.layui-body .layui-card-body{padding:20px;}
.layui-breadcrumb{background:#fff;padding:8px 16px;border-radius:6px;display:inline-block;box-shadow:0 1px 2px rgba(0,0,0,0.04);}
.layui-breadcrumb a{font-size:13px;color:#666!important;}
.layui-breadcrumb a cite{color:#1890ff!important;font-weight:500;}

/* 工具栏：强制横向一行，空间不够时可横向滚动 */
.page-toolbar{margin-bottom:16px;padding:12px 16px;background:#fafafa;border-radius:6px;border:1px solid #f0f0f0;display:flex;gap:8px;align-items:center;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;}
.page-toolbar > *{flex-shrink:0;}
.page-toolbar .layui-btn{border-radius:4px;}

/* 统计卡片 */
.stat-card-wrap{display:flex;gap:16px;flex-wrap:wrap;}
.stat-card{flex:1;min-width:200px;background:linear-gradient(135deg,#fff,#f8fbff);border-radius:10px;padding:22px 24px;box-sizing:border-box;border:1px solid #e8f0fe;box-shadow:0 2px 6px rgba(24,144,255,0.06);transition:all .3s;position:relative;overflow:hidden;}
.stat-card:hover{transform:translateY(-3px);box-shadow:0 6px 16px rgba(24,144,255,0.12);}
.stat-card:nth-child(2){background:linear-gradient(135deg,#fff,#f8fff8);border-color:#e8fee8;}
.stat-card:nth-child(2) .stat-num{color:#52c41a;}
.stat-card:nth-child(2) .stat-foot a{color:#52c41a;}
.stat-card:nth-child(3){background:linear-gradient(135deg,#fff,#fff8f0);border-color:#fff2e0;}
.stat-card:nth-child(3) .stat-num{color:#fa8c16;}
.stat-card:nth-child(4){background:linear-gradient(135deg,#fff,#fff5f8);border-color:#ffe4ec;}
.stat-card:nth-child(4) .stat-num{color:#eb2f96;}
.stat-card:nth-child(4) .stat-foot a{color:#eb2f96;}
.stat-num{font-size:34px;font-weight:700;color:#1890ff;line-height:1.2;margin-bottom:4px;}
.stat-label{color:#888;font-size:14px;font-weight:500;margin-bottom:10px;}
.stat-icon{float:right;font-size:40px;opacity:.15;margin-top:4px;}
.stat-foot{padding-top:10px;margin-top:10px;border-top:1px dashed rgba(0,0,0,0.06);font-size:12px;color:#999;}
.stat-foot a{color:#1890ff;text-decoration:none;font-weight:500;display:inline-flex;align-items:center;gap:2px;}
.stat-foot a:hover{opacity:.8;}
.stat-foot b{font-weight:600;}

/* 快捷入口按钮 */
.quick-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:18px 10px;background:#fafafa;border-radius:8px;text-decoration:none;color:#666;transition:all .25s;border:1px solid #f0f0f0;}
.quick-btn:hover{background:linear-gradient(135deg,#e6f4ff,#f0f7ff);border-color:#1890ff;color:#1890ff;transform:translateY(-2px);box-shadow:0 4px 12px rgba(24,144,255,0.1);}
.quick-btn i{font-size:24px;line-height:1;}
.quick-btn span{font-size:13px;font-weight:500;}

/* 表格优化 */
.layui-table{border-radius:6px;overflow:hidden;}
.layui-table thead tr{background:#fafafa;}
.layui-table thead th{font-weight:600;color:#444;background:#fafafa!important;border-bottom:2px solid #e8e8e8!important;padding:12px 10px!important;}
.layui-table tbody td{padding:12px 10px!important;border-bottom:1px solid #f0f0f0!important;}
.layui-table tbody tr:hover{background:#f0f7ff!important;}
.layui-table a{color:#1890ff;}
.layui-table a:hover{text-decoration:underline;}
.layui-badge{border-radius:10px;padding:0 10px;font-weight:500;}

/* 表单与字段分组 */
.seo-field{background:#fff;border-radius:8px;padding:18px 20px;margin-bottom:18px;border:1px solid #f0f0f0;box-shadow:0 1px 2px rgba(0,0,0,0.02);}
.seo-field legend{font-size:14px;font-weight:600;color:#1890ff;background:#fff;padding:0 12px;}
.layui-form-label{width:120px;font-weight:500;color:#555;}
.layui-form-item{margin-bottom:18px;}
.layui-form-item .layui-input-inline select,
.layui-form-item .layui-input-inline input,
.layui-form-item .layui-input-block input,
.layui-form-item .layui-input-block textarea,
.layui-form-item .layui-input-inline .layui-input,
.layui-form-item .layui-input-block .layui-input,
.layui-form-item .layui-textarea{border-radius:4px;transition:border-color .2s,box-shadow .2s;}
.layui-form-item .layui-input:focus,
.layui-form-item .layui-textarea:focus,
.layui-form-item select:focus{border-color:#1890ff;box-shadow:0 0 0 3px rgba(24,144,255,0.08);}
.layui-form-item .layui-btn{border-radius:4px;}
.form-row-inline{display:flex;gap:16px;flex-wrap:wrap;}
.form-row-inline .layui-form-item{flex:1;min-width:260px;}
.form-row-inline .layui-form-label{width:100px;}

/* 分页 */
#pager{margin-top:20px;text-align:right;}

/* 侧栏收起状态 */
.sidebar-closed .layui-side{width:0;overflow:hidden;}
.sidebar-closed .layui-body{left:0;}
.sidebar-closed .layui-logo{width:40px;}
.sidebar-closed .layui-logo .logo-text-full{display:none;}
.sidebar-closed .layui-logo .logo-text-mini{display:inline-block;}

/* ----- 后台登录页 ----- */
body.page-login{background:linear-gradient(135deg,#1e9fff,#5fb8ff);min-height:100vh;display:flex;align-items:center;justify-content:center;}
.login-box{width:380px;background:#fff;border-radius:10px;padding:35px 30px;box-shadow:0 8px 30px rgba(0,0,0,0.2);}
.login-title{text-align:center;font-size:24px;color:#333;margin-bottom:25px;font-weight:bold;}
.login-title span{color:#1e9fff;}
.login-btn{width:100%;height:44px;}
.login-tip{text-align:center;color:#999;font-size:12px;margin-top:15px;}

/* ----- 后台文章表单：封面上传 ----- */
.cover-uploader{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-start;}
.cover-preview{width:240px;height:140px;border:2px dashed #d9d9d9;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#fafbff,#f0f4ff);display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;transition:all .25s;}
.cover-preview:hover{border-color:#1890ff;background:linear-gradient(135deg,#f0f7ff,#e6f0ff);}
.cover-preview img{width:100%;height:100%;object-fit:cover;}
.cover-placeholder{color:#999;font-size:13px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px;}
.cover-placeholder .layui-icon{font-size:42px;color:#1890ff;}
.cover-actions{display:flex;flex-direction:column;gap:10px;justify-content:center;height:140px;}
.cover-actions .layui-btn{border-radius:4px;}
.cover-tip{color:#999;font-size:12px;line-height:1.6;}
.cover-uploader.dragover .cover-preview{border-color:#1890ff;background:#e6f4ff;transform:scale(1.02);}

/* 信息卡片（用于 sitemap / setting 等页面） */
.info-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin-bottom:18px;}
.info-card{background:#fff;border-radius:8px;padding:18px 20px;border:1px solid #f0f0f0;box-shadow:0 1px 2px rgba(0,0,0,0.03);}
.info-card .info-label{font-size:13px;color:#888;margin-bottom:6px;}
.info-card .info-value{font-size:16px;font-weight:600;color:#333;}
.info-card .info-value.big{font-size:24px;color:#1890ff;}
.info-card.green .info-value.big{color:#52c41a;}
.info-card.orange .info-value.big{color:#fa8c16;}
.info-card.pink .info-value.big{color:#eb2f96;}

/* 背景图卡片优化 */
.bg-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;}
.bg-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,0.06);transition:all .25s;border:1px solid #f0f0f0;}
.bg-card:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(0,0,0,0.12);}
.bg-thumb{position:relative;width:100%;height:160px;background:#f2f2f2 center/cover no-repeat;cursor:pointer;}
.bg-thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(to bottom,transparent 50%,rgba(0,0,0,0.45));opacity:0;transition:opacity .25s;}
.bg-card:hover .bg-thumb::after{opacity:1;}
.bg-mask-disabled{position:absolute;inset:0;background:rgba(0,0,0,0.55);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;letter-spacing:1px;z-index:2;backdrop-filter:blur(2px);}
.bg-tag-link{position:absolute;left:0;top:0;background:linear-gradient(135deg,#1890ff,#5fb8ff);color:#fff;font-size:12px;padding:3px 10px;border-radius:0 0 8px 0;font-weight:500;z-index:2;box-shadow:0 2px 4px rgba(24,144,255,0.25);}
.bg-body{padding:14px 16px;}
.bg-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;}
.bg-title .t{font-weight:600;font-size:14px;color:#333;max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.bg-title .s{color:#999;font-size:12px;}
.bg-url{color:#bbb;font-size:12px;word-break:break-all;max-height:34px;overflow:hidden;line-height:1.5;margin-bottom:10px;}
.bg-actions{display:flex;gap:6px;flex-wrap:wrap;}
.bg-empty{grid-column:1/-1;text-align:center;padding:60px 20px;color:#999;}
.bg-empty i{font-size:52px;color:#ddd;display:block;margin-bottom:12px;}
.bg-empty p{font-size:16px;color:#888;margin-bottom:4px;font-weight:500;}
.bg-empty span{font-size:13px;color:#bbb;}

/* 背景图预览框（与文章封面统一风格） */
.bg-preview-box{width:200px;height:120px;}
.bg-preview-box img{width:100%;height:100%;object-fit:cover;}

/* 操作按钮组：强制单行 nowrap，保证在一行内 */
.btn-group-inline{display:flex;gap:6px;align-items:center;flex-wrap:nowrap;white-space:nowrap;}
.btn-group-inline .layui-btn{border-radius:4px;white-space:nowrap;}

/* 操作列：禁止换行，同时给表单/按钮 inline 支持 */
.layui-table td.op-col,
.layui-table td:last-child{white-space:nowrap;}
.btn-group-inline form{display:inline-flex;margin:0;}

/* 搜索框组：强制单行，配合 page-toolbar 的 flex 布局保持一行 */
.search-bar{display:flex;gap:8px;flex-wrap:nowrap;align-items:center;}
.search-bar .layui-input{border-radius:4px;}
.search-bar .layui-form-select{min-width:140px;}