/* =========================================================================
   活动管理后台 · 样式（浅色主题）
   ========================================================================= */
:root{
  --bg:#F4F6FA;
  --panel:#FFFFFF;
  --line:#E4E8F0;
  --text:#1B2537;
  --sub:#6B7793;
  --sub2:#98A2B8;
  --primary:#1565C0;
  --primary-d:#0F4C93;
  --accent:#FF6B35;
  --green:#2E9E7E;
  --amber:#C98A16;
  --danger:#D64545;
  --radius:12px;
  --shadow:0 1px 2px rgba(21,38,72,.06), 0 8px 24px -12px rgba(21,38,72,.14);
}
*{box-sizing:border-box;}
[hidden]{display:none !important;}
html,body{margin:0;padding:0;min-height:100%;}
body{
  background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",Arial,sans-serif;
  font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,p,ol,ul{margin:0;padding:0;}
ol,ul{list-style:none;}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
code{background:#EEF2F9;border-radius:5px;padding:1px 6px;font-size:12px;color:var(--primary);}

/* ============ 登录 ============ */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:radial-gradient(1100px 500px at 50% -10%, #DCE8FA 0%, #F4F6FA 60%);}
.login-card{width:100%;max-width:400px;background:var(--panel);border:1px solid var(--line);
  border-radius:20px;padding:38px 30px 30px;box-shadow:var(--shadow);text-align:center;}
.login-logo{font-size:46px;line-height:1;margin-bottom:14px;}
.login-card h1{font-size:21px;margin-bottom:6px;letter-spacing:.5px;}
.login-sub{color:var(--sub);font-size:13px;margin-bottom:26px;}
.login-hint{font-size:11.5px;color:var(--sub2);margin-top:16px;line-height:1.7;}
.login-err{margin-top:12px;font-size:13px;color:var(--danger);}
.login-back{display:block;margin-top:16px;font-size:12.5px;color:var(--sub2);text-decoration:none;
  transition:color .2s;}
.login-back:hover{color:var(--primary);}

/* ============ 表单元素 ============ */
.lf{display:block;text-align:left;margin-bottom:16px;}
.lf>span{display:block;font-size:12.5px;color:var(--sub);font-weight:600;margin-bottom:6px;}
.lf>span b{color:var(--accent);}
.lf>em{display:block;font-style:normal;font-size:11.5px;color:var(--sub2);margin-top:5px;}
.lf input,.lf select,.lf textarea{width:100%;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#FAFBFD;padding:0 13px;outline:none;transition:border-color .16s, box-shadow .16s, background .16s;}
.lf textarea{height:auto;padding:11px 13px;resize:vertical;line-height:1.7;}
.lf input:focus,.lf textarea:focus,.lf select:focus{border-color:var(--primary);background:#fff;
  box-shadow:0 0 0 3px rgba(21,101,192,.12);}
.ta{width:100%;border-radius:10px;border:1px solid var(--line);background:#FAFBFD;padding:12px 13px;
  outline:none;resize:vertical;line-height:1.75;font-size:13.5px;}
.ta:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(21,101,192,.12);}

.abtn{height:38px;padding:0 18px;border-radius:10px;border:1px solid transparent;font-weight:600;
  font-size:13.5px;cursor:pointer;transition:all .16s;display:inline-flex;align-items:center;gap:6px;white-space:nowrap;}
.abtn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 12px -4px rgba(21,101,192,.6);}
.abtn-primary:hover{background:var(--primary-d);}
.abtn-ghost{background:#fff;border-color:var(--line);color:var(--text);}
.abtn-ghost:hover{border-color:#C7D3E6;background:#F8FAFD;}
.abtn-lg{height:46px;padding:0 28px;font-size:15px;border-radius:11px;}
.abtn-sm{height:30px;padding:0 12px;font-size:12.5px;border-radius:8px;}
.abtn-danger{background:#fff;border-color:#F0C9C9;color:var(--danger);}
.abtn-danger:hover{background:#FDF3F3;}
.abtn:disabled{opacity:.5;cursor:not-allowed;}

/* ============ 布局 ============ */
.app{display:flex;min-height:100vh;}
.side{width:224px;flex:0 0 224px;background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;}
.side-brand{display:flex;align-items:center;gap:11px;padding:20px 18px 18px;border-bottom:1px solid var(--line);}
.sb-emoji{font-size:26px;}
.side-brand b{display:block;font-size:14.5px;letter-spacing:.3px;}
.side-brand small{color:var(--sub2);font-size:11.5px;}
.side-nav{padding:10px 10px;display:flex;flex-direction:column;gap:2px;flex:1;overflow-y:auto;}
.nav-i{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;cursor:pointer;
  color:var(--sub);font-size:13.5px;font-weight:600;transition:all .15s;user-select:none;}
.nav-i i{font-style:normal;font-size:15px;width:18px;text-align:center;}
.nav-i:hover{background:#F3F6FB;color:var(--text);}
.nav-i.active{background:rgba(21,101,192,.09);color:var(--primary);}
.nav-i .badge{margin-left:auto;background:#EEF2F9;color:var(--sub);font-size:11px;
  padding:1px 7px;border-radius:100px;font-weight:700;}
.nav-i.active .badge{background:rgba(21,101,192,.14);color:var(--primary);}
.side-foot{padding:14px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;}
.status-pill{font-size:11.5px;font-weight:700;text-align:center;padding:6px 10px;border-radius:100px;
  background:#EAF6F1;color:var(--green);}
.status-pill.pending{background:#FFF5E6;color:var(--amber);}
.status-pill.ended{background:#F2F4F8;color:var(--sub);}
.side-link{font-size:12.5px;color:var(--sub);text-decoration:none;text-align:center;padding:6px;
  border-radius:8px;cursor:pointer;background:none;border:none;transition:all .15s;}
.side-link:hover{background:#F3F6FB;color:var(--primary);}

.content{flex:1;min-width:0;padding:0 26px 60px;}
.topbar{position:sticky;top:0;z-index:20;background:rgba(244,246,250,.92);backdrop-filter:blur(10px);
  display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 0 14px;
  border-bottom:1px solid var(--line);margin-bottom:20px;}
.topbar h2{font-size:19px;}
.topbar-r{display:flex;align-items:center;gap:12px;}
.srv-time{font-size:12px;color:var(--sub2);}

.pane{display:none;}
.pane.active{display:block;animation:fade .26s ease;}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;margin-bottom:18px;box-shadow:var(--shadow);}
.card-h{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px;flex-wrap:wrap;}
.card-h h3{font-size:15.5px;display:flex;align-items:center;gap:8px;}
.card-sub{font-size:12px;color:var(--sub2);}
.card-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap;}
.cnt{background:#EEF2F9;color:var(--sub);font-size:11.5px;padding:2px 8px;border-radius:100px;font-weight:700;}
.hint{font-size:12.5px;color:var(--sub);background:#F7F9FC;border-left:3px solid #CFDCEE;
  border-radius:0 8px 8px 0;padding:10px 13px;margin-bottom:16px;line-height:1.75;}
.hint b{color:var(--primary);}

/* ============ KPI ============ */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(158px,1fr));gap:14px;margin-bottom:18px;}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;
  box-shadow:var(--shadow);position:relative;overflow:hidden;}
.kpi::after{content:"";position:absolute;right:-26px;top:-26px;width:76px;height:76px;border-radius:50%;
  background:radial-gradient(circle,rgba(21,101,192,.09),transparent 70%);}
.kpi .k-l{font-size:12px;color:var(--sub);margin-bottom:8px;}
.kpi .k-v{font-size:27px;font-weight:800;letter-spacing:-.5px;line-height:1.1;color:var(--primary);}
.kpi .k-v small{font-size:13px;font-weight:600;color:var(--sub2);margin-left:3px;}
.kpi .k-sub{font-size:11.5px;color:var(--sub2);margin-top:6px;}
.kpi.accent .k-v{color:var(--accent);}
.kpi.green .k-v{color:var(--green);}
.kpi.amber .k-v{color:var(--amber);}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
@media (max-width:1000px){.grid2{grid-template-columns:1fr;}}

/* 简易柱状图 */
.bars{display:flex;align-items:flex-end;gap:10px;height:168px;padding-top:8px;}
.bar-c{flex:1;display:flex;flex-direction:column;align-items:center;gap:7px;height:100%;justify-content:flex-end;min-width:0;}
.bar-v{font-size:11.5px;font-weight:700;color:var(--primary);}
.bar{width:100%;max-width:52px;border-radius:7px 7px 3px 3px;
  background:linear-gradient(180deg,#3E8FDB,#1565C0);min-height:3px;transition:height .5s cubic-bezier(.22,1,.36,1);}
.bar-c.zero .bar{background:#E7ECF4;}
.bar-l{font-size:11px;color:var(--sub2);white-space:nowrap;}
.bars-empty{color:var(--sub2);font-size:12.5px;text-align:center;padding:58px 0;}

/* ============ 表格 ============ */
.tb-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;}
.tb{width:100%;border-collapse:collapse;font-size:13px;}
.tb th{background:#F7F9FC;text-align:left;padding:10px 13px;font-weight:600;color:var(--sub);
  font-size:12px;white-space:nowrap;border-bottom:1px solid var(--line);}
.tb td{padding:10px 13px;border-bottom:1px solid #F0F3F8;vertical-align:middle;}
.tb tbody tr:last-child td{border-bottom:none;}
.tb tbody tr:hover{background:#FAFCFF;}
.tb .num{font-variant-numeric:tabular-nums;font-weight:600;}
.tb input[type=text],.tb input[type=number]{height:34px;border-radius:8px;border:1px solid var(--line);
  background:#fff;padding:0 10px;width:100%;outline:none;}
.tb input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,101,192,.1);}
.tb select{height:34px;border-radius:8px;border:1px solid var(--line);background:#fff;padding:0 8px;
  width:100%;outline:none;font-family:inherit;font-size:13px;color:inherit;}
.tb select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,101,192,.1);}
.tb .claim-txt{font-size:12px;color:var(--sub);word-break:break-all;max-width:260px;display:inline-block;}
.tag{display:inline-block;font-size:11.5px;font-weight:700;padding:2px 9px;border-radius:100px;}
.tag.on{background:#EAF6F1;color:var(--green);}
.tag.off{background:#F2F4F8;color:var(--sub2);}
.tag.win{background:#FFF2E9;color:var(--accent);}
.tag.lose{background:#F2F4F8;color:var(--sub2);}
.empty{text-align:center;color:var(--sub2);font-size:13px;padding:40px 0;}

/* ============ 开关 ============ */
.switches{display:grid;grid-template-columns:repeat(auto-fit,minmax(216px,1fr));gap:10px 20px;margin-top:6px;}
.sw{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:13.5px;padding:7px 0;user-select:none;}
.sw input{display:none;}
.sw i{flex:0 0 38px;height:22px;border-radius:100px;background:#DDE3ED;position:relative;transition:background .2s;}
.sw i::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;
  background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:transform .2s;}
.sw input:checked+i{background:var(--primary);}
.sw input:checked+i::after{transform:translateX(16px);}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;}
.form-grid .full{grid-column:1 / -1;}
@media (max-width:820px){.form-grid{grid-template-columns:1fr;}}

/* ============ 题库列表 ============ */
.qlist{display:flex;flex-direction:column;gap:12px;}
.qitem{border:1px solid var(--line);border-radius:11px;padding:14px 16px;background:#FCFDFF;transition:border-color .16s;}
.qitem:hover{border-color:#D3DEEC;}
.qitem-h{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.qitem-h .qi-n{flex:0 0 26px;height:26px;border-radius:8px;background:rgba(21,101,192,.1);color:var(--primary);
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;}
.qitem-h .qi-t{font-size:12.5px;color:var(--sub2);}
.qitem-h .qi-x{margin-left:auto;display:flex;gap:8px;align-items:center;}
.qrow{display:flex;gap:10px;align-items:flex-start;margin-bottom:8px;}
.qrow label{flex:0 0 24px;height:34px;display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;color:var(--sub);}
.qrow input[type=text]{flex:1;height:38px;border-radius:9px;border:1px solid var(--line);background:#fff;
  padding:0 12px;outline:none;}
.qrow input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,101,192,.1);}
.qrow.correct label{color:var(--green);}
.qrow.correct input{border-color:#9FD8C6;background:#F5FCF9;}
.qrow .rd{flex:0 0 30px;height:38px;display:flex;align-items:center;justify-content:center;cursor:pointer;}
.qrow .rd input{width:17px;height:17px;accent-color:var(--green);cursor:pointer;}
.qitem .qstem,.qitem .qtip{width:100%;border-radius:9px;border:1px solid var(--line);background:#fff;
  padding:10px 12px;outline:none;line-height:1.7;font-size:13.5px;}
.qitem .qstem{font-weight:600;margin-bottom:8px;}
.qitem .qtip{font-size:12.5px;color:var(--sub);margin-top:2px;}
.qitem .qstem:focus,.qitem .qtip:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,101,192,.1);}

.save-bar{display:flex;align-items:center;gap:16px;position:sticky;bottom:0;
  background:linear-gradient(180deg,rgba(244,246,250,0),rgba(244,246,250,.95) 40%);
  padding:18px 0 8px;margin-top:6px;z-index:10;}
.save-tip{font-size:12.5px;color:var(--green);font-weight:600;}

/* ============ Tabs ============ */
.tabs{display:flex;gap:4px;background:#F2F5FA;padding:3px;border-radius:10px;flex-wrap:wrap;}
.tab{padding:7px 14px;border-radius:8px;font-size:12.5px;font-weight:600;color:var(--sub);cursor:pointer;
  border:none;background:none;transition:all .15s;}
.tab:hover{color:var(--text);}
.tab.active{background:#fff;color:var(--primary);box-shadow:0 1px 3px rgba(21,38,72,.12);}

/* ============ 说明列表 ============ */
.help-list{counter-reset:h;display:flex;flex-direction:column;gap:11px;}
.help-list li{position:relative;padding-left:30px;font-size:13.5px;color:var(--sub);line-height:1.8;}
.help-list li::before{counter-increment:h;content:counter(h);position:absolute;left:0;top:2px;
  width:20px;height:20px;border-radius:50%;background:rgba(21,101,192,.1);color:var(--primary);
  font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;}
.help-list b,.check-list b{color:var(--text);}
.check-list{display:flex;flex-direction:column;gap:10px;}
.check-list li{position:relative;padding-left:24px;font-size:13.5px;color:var(--sub);line-height:1.8;}
.check-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--green);font-weight:800;}

/* ============ 弹窗 / Toast ============ */
.modal{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;padding:20px;}
.modal[hidden]{display:none;}
.modal-mask{position:absolute;inset:0;background:rgba(16,26,48,.5);backdrop-filter:blur(3px);}
.modal-body{position:relative;width:100%;max-width:620px;background:#fff;border-radius:16px;
  padding:24px 26px;box-shadow:0 30px 70px -20px rgba(0,0,0,.4);animation:pop .3s cubic-bezier(.2,1.2,.4,1);}
@keyframes pop{from{transform:scale(.94);opacity:0}to{transform:none;opacity:1}}
.modal-body h3{font-size:16.5px;margin-bottom:10px;}
.modal-body .hint{font-size:12px;line-height:1.85;}
.modal-body code{font-size:11px;}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:16px;}

.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%);z-index:99;
  background:#1B2537;color:#fff;font-size:13.5px;padding:11px 22px;border-radius:100px;
  box-shadow:0 16px 40px -12px rgba(0,0,0,.5);animation:tst .26s ease;}
.toast[hidden]{display:none;}
@keyframes tst{from{opacity:0;transform:translate(-50%,12px)}to{opacity:1;transform:translate(-50%,0)}}

/* ============ 奖品图片 ============ */
.p-img-btn{position:relative;width:60px;height:44px;border-radius:9px;border:1px dashed #C9D4E6;background:#F8FAFE;
  display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0;overflow:hidden;
  transition:border-color .2s,background .2s;}
.p-img-btn span{font-size:12px;color:var(--sub2);}
.p-img-btn img{width:100%;height:100%;object-fit:cover;display:block;}
.p-img-btn:hover{border-color:var(--primary);background:#EEF4FE;}
.p-img-btn.has{border-style:solid;border-color:var(--line);}
.p-img-edit{position:absolute;right:0;bottom:0;background:rgba(16,26,48,.68);color:#fff;font-size:10px;
  font-style:normal;line-height:1.5;padding:1px 5px;border-radius:6px 0 9px 0;opacity:0;transition:opacity .2s;}
.p-img-btn:hover .p-img-edit{opacity:1;}

.im-stage{display:flex;gap:18px;margin-top:14px;align-items:flex-start;}
.im-preview{flex:0 0 168px;height:168px;border-radius:14px;border:1px dashed #C9D4E6;background:#F8FAFE;
  display:flex;align-items:center;justify-content:center;overflow:hidden;}
.im-preview img{max-width:100%;max-height:100%;object-fit:contain;display:block;}
.im-ph{font-size:12.5px;color:var(--sub2);}
.im-side{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px;}
.im-side .abtn{align-self:flex-start;}
.im-tip{font-size:11.5px;color:var(--sub2);min-height:16px;margin:0;line-height:1.6;}
.im-or{display:flex;align-items:center;gap:8px;margin:2px 0;}
.im-or i{height:1px;background:#E4EAF4;flex:1;}
.im-or span{font-size:11.5px;color:var(--sub2);}
.im-url{width:100%;height:38px;border-radius:9px;border:1px solid var(--line);background:#FAFBFD;
  padding:0 12px;font-size:13px;outline:none;transition:border-color .16s,box-shadow .16s,background .16s;}
.im-url:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(21,101,192,.1);}
.im-which{font-size:13px;color:var(--sub);font-weight:400;}
.im-spacer{flex:1;}

/* ============ 移动端 ============ */
@media (max-width:820px){
  .app{flex-direction:column;}
  .side{width:100%;flex:none;height:auto;position:static;border-right:none;border-bottom:1px solid var(--line);}
  .side-nav{flex-direction:row;overflow-x:auto;padding:8px 10px 10px;gap:6px;}
  .nav-i{white-space:nowrap;padding:8px 12px;}
  .nav-i .badge{display:none;}
  .side-foot{flex-direction:row;align-items:center;justify-content:space-between;padding:10px 14px;}
  .status-pill{order:2;}
  .content{padding:0 14px 50px;}
  .tb th,.tb td{padding:8px 10px;font-size:12.5px;}
  .im-stage{flex-direction:column;}
  .im-preview{flex:none;width:100%;height:200px;}
  .im-side{width:100%;}
}