:root{
  --bg:#f5f6f8;
  --panel:#ffffff;
  --line:#e6e8ee;
  --line-strong:#d8dce6;
  --text:#1f2430;
  --muted:#6b7280;
  --brand:#2f6bff;
  --brand-soft:#eef3ff;
  --ok:#12805c;
  --ok-soft:#e7f6ef;
  --warn:#a15c00;
  --warn-soft:#fdf3e3;
  --bad:#c0392b;
  --bad-soft:#fdeceb;
  --radius:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.04);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--text);
  font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit;cursor:pointer;border:1px solid var(--line-strong);background:#fff;border-radius:8px;padding:7px 12px;transition:background .15s,border-color .15s}
button:hover{background:#f7f8fa}
button:disabled{opacity:.5;cursor:not-allowed}
button.primary{background:var(--brand);border-color:var(--brand);color:#fff}
button.primary:hover{background:#255ce0}
button.danger{color:var(--bad);border-color:#f0c9c5}
button.danger:hover{background:var(--bad-soft)}
button.ghost{background:transparent;border-color:transparent}
button.ghost:hover{background:rgba(47,107,255,.08)}
button.small{padding:5px 10px;font-size:13px}
button.icon{padding:4px 8px;font-size:13px}
a{color:var(--brand);text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600}
input,select,textarea{
  font:inherit;color:inherit;background:#fff;border:1px solid var(--line-strong);
  border-radius:8px;padding:8px 10px;width:100%;
}
input:focus,select:focus,textarea:focus{outline:2px solid rgba(47,107,255,.25);border-color:var(--brand)}
label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
input[type=checkbox]{width:auto}

/* ---------- 登录 ---------- */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:26px;display:flex;flex-direction:column;gap:14px}
.login-brand{display:flex;align-items:center;gap:12px;margin-bottom:4px}
.login-brand b{display:block;font-size:17px}
.login-brand small{color:var(--muted)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;font-weight:700}
.error{color:var(--bad);font-size:13px;min-height:18px;margin:0}
.hint{color:var(--muted);font-size:12.5px;margin:0}

/* ---------- 布局 ---------- */
.layout{display:grid;grid-template-columns:186px minmax(0,1fr);min-height:100vh}
.sidebar{background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:14px 10px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:4px 6px 14px}
.brand b{display:block;font-size:15px}
.brand small{color:var(--muted);font-size:12px}
.nav{display:flex;flex-direction:column;gap:2px;flex:1}
.nav-title{font-size:11.5px;letter-spacing:.06em;color:#98a2b3;padding:14px 8px 6px}
.nav-item{display:flex;align-items:center;gap:8px;padding:8px 9px;border-radius:8px;color:#3b4252;font-size:13.5px}
.nav-item:hover{background:#f5f7fb}
.nav-item.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-item .ico{width:18px;text-align:center;color:#8a93a5}
.nav-item.active .ico{color:var(--brand)}
.nav-item .count{margin-left:auto;font-size:12px;color:var(--muted)}
.sidebar-foot{border-top:1px solid var(--line);padding-top:10px;display:flex;flex-direction:column;gap:6px}
.side-user{font-size:12.5px;color:var(--muted);padding:0 8px;word-break:break-all}
.main{display:flex;flex-direction:column;min-width:0}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 24px 0}
.topbar-title{display:flex;align-items:baseline;gap:10px;min-width:0}
.topbar h1{font-size:20px}
.page-sub{color:var(--muted);font-size:12.5px}
.topbar-tools{display:flex;align-items:center;gap:10px}
.content{padding:18px 24px 40px;display:flex;flex-direction:column;gap:16px}

/* ---------- 通用块 ---------- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.panel-head h2{font-size:15px}
.panel-head .muted{color:var(--muted);font-size:12.5px}
.muted{color:var(--muted)}
.tag{display:inline-flex;align-items:center;gap:5px;font-size:12px;padding:2px 8px;border-radius:999px;background:#f2f4f8;color:#4b5563;border:1px solid var(--line)}
.tag.ok{background:var(--ok-soft);color:var(--ok);border-color:#c9ead9}
.tag.warn{background:var(--warn-soft);color:var(--warn);border-color:#f0dcb8}
.tag.bad{background:var(--bad-soft);color:var(--bad);border-color:#f2cbc7}
.tag.info{background:var(--brand-soft);color:var(--brand);border-color:#d6e2ff}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow)}
.stat small{display:block;color:var(--muted);font-size:12.5px}
.stat strong{display:block;font-size:24px;line-height:1.3;margin-top:4px}
.stat.accent{background:linear-gradient(180deg,#f5f8ff,#fff);border-color:#dbe6ff}

.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.toolbar .spacer{flex:1}
.search{max-width:240px}
.search input{padding:7px 10px}

/* ---------- 表格 ---------- */
.table-wrap{overflow:auto;border-radius:10px}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-weight:600;color:#5b6472;font-size:12.5px;background:#fafbfd;white-space:nowrap;position:sticky;top:0;z-index:1}
tbody tr:hover{background:#fbfcfe}
td .sub{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px}
.nowrap{white-space:nowrap}
.right{text-align:right}
.acts{display:flex;gap:6px;flex-wrap:wrap}
.empty{padding:34px 12px;text-align:center;color:var(--muted)}
.empty .big{font-size:22px;display:block;margin-bottom:6px;color:#c3c9d4}

.user{display:flex;align-items:center;gap:9px;min-width:160px}
.avatar{width:32px;height:32px;border-radius:50%;object-fit:cover;background:#eef1f6;display:flex;align-items:center;justify-content:center;color:#8a93a5;font-size:12px;flex:none}
.user b{display:block;font-size:13.5px;font-weight:600}
.user small{color:var(--muted);font-size:12px}

.dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#c3c9d4;margin-right:5px}
.dot.on{background:var(--ok)}
.dot.off{background:#d9534f}

.toggle{border:1px solid var(--line-strong);background:#f3f4f7;border-radius:999px;padding:3px 10px 3px 8px;font-size:12.5px;display:inline-flex;align-items:center;gap:6px}
.toggle::before{content:"";width:8px;height:8px;border-radius:50%;background:#9aa3b2}
.toggle.on{background:var(--ok-soft);border-color:#c9ead9;color:var(--ok)}
.toggle.on::before{background:var(--ok)}

.chips{display:flex;gap:5px;flex-wrap:wrap;max-width:240px}
.chip{background:#f2f5fb;border:1px solid #e4e9f4;border-radius:999px;padding:2px 8px;font-size:12px;color:#41506b;cursor:pointer}
.chip:hover{background:var(--brand-soft);border-color:#d6e2ff;color:var(--brand)}

.limit{border:1px dashed var(--line-strong);background:#fff;border-radius:8px;padding:3px 8px;font-size:12.5px}
.limit:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 小组卡片 ---------- */
.group-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
@media (max-width:900px){.group-grid{grid-template-columns:1fr}}
.pager{display:flex;align-items:center;gap:6px;margin-top:14px;flex-wrap:wrap}
.pager .muted{margin-left:8px;font-size:12px}
.group-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden;min-width:0}
.group-card header{display:flex;align-items:center;gap:8px;padding:12px;border-bottom:1px solid var(--line)}
.group-card .initial{width:28px;height:28px;border-radius:8px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.group-card h3{font-size:13.5px;word-break:break-all}
.group-card header small{color:var(--muted);font-size:11.5px}
.group-card header .tag{margin-left:auto;flex:none}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;padding:10px 12px;border-bottom:1px solid var(--line)}
.metrics div small{display:block;color:var(--muted);font-size:11px}
.metrics div b{font-size:12px;font-weight:600;word-break:break-all}
.group-card .meta{padding:8px 12px;display:flex;flex-wrap:wrap;gap:4px 12px;color:var(--muted);font-size:11.5px;border-bottom:1px solid var(--line)}
.group-card .meta b{color:var(--text);font-weight:500;word-break:break-all}
.members{max-height:196px;overflow:auto}
.members table{font-size:12px}
.members th,.members td{padding:6px 8px;white-space:nowrap}
.members button{white-space:nowrap}
.group-card footer{padding:10px 12px;display:flex;flex-direction:column;gap:8px}
.invite{font-size:11.5px;color:#3d4657;word-break:break-all;max-height:64px;overflow:auto;background:#fafbfd;border:1px solid var(--line);border-radius:8px;padding:6px 8px}
.group-card footer .acts{justify-content:flex-end}
.card-note{color:var(--warn);font-size:12px}

/* ---------- 提示条 ---------- */
.banner{display:flex;gap:10px;align-items:flex-start;background:var(--brand-soft);border:1px solid #d6e2ff;color:#27406e;border-radius:10px;padding:10px 14px;font-size:13px}
.banner.warn{background:var(--warn-soft);border-color:#f0dcb8;color:#6b4200}
.banner.bad{background:var(--bad-soft);border-color:#f2cbc7;color:#7a2a22}

/* ---------- 弹窗 ---------- */
.modal-layer:empty{display:none}
.modal-layer{position:fixed;inset:0;background:rgba(16,24,40,.38);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}
.modal{background:var(--panel);border-radius:14px;box-shadow:0 24px 64px rgba(16,24,40,.22);width:100%;max-width:560px;max-height:92vh;display:flex;flex-direction:column;overflow:hidden}
.modal.wide{max-width:720px}
.modal header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}
.modal header h3{font-size:15px}
.modal header button{border:none;background:transparent;font-size:20px;line-height:1;padding:2px 6px;color:var(--muted)}
.modal .body{padding:16px 18px;display:flex;flex-direction:column;gap:12px;overflow:auto}
.modal footer{padding:12px 18px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.qr-box{display:flex;flex-direction:column;align-items:center;gap:8px;min-height:180px;justify-content:center}
.qr-box img{width:190px;height:190px;border:1px solid var(--line);border-radius:10px;background:#fff}
.scan-status{font-size:13px;color:var(--muted);text-align:center;min-height:20px}

/* ---------- 日志 ---------- */
.flow-card{border:1px solid var(--line);border-radius:10px;background:#fff;margin-bottom:12px;overflow:hidden}
.flow-card:last-child{margin-bottom:0}
.flow-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:11px 14px;background:#fafbfd;border-bottom:1px solid var(--line)}
.flow-code{font-size:13px;color:var(--brand);text-decoration:none}
.flow-code:hover{text-decoration:underline}
.flow-head .muted{color:var(--muted);font-size:12.5px}
.flow-time{margin-left:auto;color:var(--muted);font-size:12px;white-space:nowrap}
.flow-steps{list-style:none;margin:0;padding:8px 14px 12px}
.flow-steps li{position:relative;display:flex;padding:6px 0 6px 20px}
.flow-steps li:before{content:'';position:absolute;left:4px;top:0;bottom:0;width:1px;background:var(--line)}
.flow-steps li:first-child:before{top:13px}
.flow-steps li:last-child:before{bottom:calc(100% - 13px)}
.flow-steps .dot{position:absolute;left:0;top:10px;width:9px;height:9px;border-radius:50%;background:#c8cfdb;box-shadow:0 0 0 1px var(--line)}
.flow-steps li.done .dot{background:var(--ok);box-shadow:0 0 0 1px #bfe4d4}
.flow-steps li.fail .dot{background:var(--bad);box-shadow:0 0 0 1px #f2cbc7}
.flow-steps li.join .dot{background:var(--brand);box-shadow:0 0 0 1px #d6e2ff}
.flow-steps li.wait .dot,.flow-steps li.scan .dot,.flow-steps li.auth .dot{background:#93a4bf}
.flow-body{min-width:0;flex:1}
.flow-body b{font-size:13px;color:#2b3242;margin-right:8px}
.flow-body time{font-size:11.5px;color:var(--muted)}
.flow-body p{margin:2px 0 0;font-size:12.5px;color:#4b5563;word-break:break-word}
.t-ok{color:var(--ok)}.t-info{color:var(--brand)}.t-warn{color:var(--warn)}.t-bad{color:var(--bad)}
.live{color:var(--ok);margin-left:auto;font-size:12px;font-weight:500;white-space:nowrap}
.log-list{display:flex;flex-direction:column;max-height:420px;overflow:auto}
.log-row{display:grid;grid-template-columns:132px 90px 1fr 130px;gap:10px;padding:8px 4px;border-bottom:1px solid var(--line);font-size:12.5px;align-items:baseline}
.log-row .msg{color:#39404f;word-break:break-word}
.log-row .ip{color:var(--muted);font-size:12px}
.sys{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.sys div{background:#fafbfd;border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.sys small{display:block;color:var(--muted);font-size:12px}
.sys b{font-size:15px}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#1f2937;color:#fff;padding:9px 16px;border-radius:999px;font-size:13px;z-index:80;box-shadow:0 10px 26px rgba(16,24,40,.24);max-width:80vw}

@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;height:auto;flex-direction:row;align-items:center;overflow-x:auto;gap:8px;padding:10px 12px}
  .brand{padding:0 8px 0 0}
  .brand small{display:none}
  .nav{flex-direction:row;flex:1;overflow-x:auto}
  .nav-title{display:none}
  .nav-item{white-space:nowrap;padding:7px 10px}
  .sidebar-foot{border:none;padding:0;flex-direction:row;align-items:center}
  .side-user{display:none}
  .topbar{padding:14px 14px 0}
  .content{padding:14px 14px 32px}
  .row2{grid-template-columns:1fr}
  .log-row{grid-template-columns:1fr;gap:2px}
  .group-grid{grid-template-columns:1fr}
}