:root{
  --bg:#f5f6f8;--panel:#fff;--ink:#1d2330;--muted:#5f6b7a;--line:#e2e6ec;
  --brand:#1f5fbf;--brand-ink:#fff;--ok:#1b7f4b;--warn:#a86400;--bad:#b3261e;
  --ok-bg:#e6f4ec;--warn-bg:#fff4e0;--bad-bg:#fdeceb;--info-bg:#eaf1fb;
  --radius:8px;--side:#15233b;--side-ink:#cfd8e6;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font:14px/1.5 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1{font-size:22px;margin:0 0 4px}
h2{font-size:17px;margin:22px 0 10px}
h3{font-size:15px;margin:16px 0 8px}
.muted{color:var(--muted)}
.small{font-size:12px}
.mono{font-family:Consolas,"Cascadia Mono",monospace;font-size:12.5px}
.shell{display:flex;min-height:100vh}
.side{width:230px;background:var(--side);color:var(--side-ink);padding:14px 0;flex-shrink:0}
.side .brand{color:#fff;font-weight:600;padding:4px 18px 14px;font-size:15px;border-bottom:1px solid rgba(255,255,255,.08)}
.side .brand small{display:block;font-weight:400;color:var(--side-ink);font-size:12px;margin-top:2px}
.side nav a{display:block;color:var(--side-ink);padding:8px 18px;border-left:3px solid transparent}
.side nav a:hover{background:rgba(255,255,255,.05);text-decoration:none;color:#fff}
.side nav a.on{border-left-color:#6ea8ff;background:rgba(255,255,255,.07);color:#fff}
.side nav .sec{padding:14px 18px 4px;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:#8193ad}
.side nav a.off{opacity:.45}
.main{flex:1;min-width:0}
.top{display:flex;align-items:center;gap:12px;justify-content:space-between;background:var(--panel);border-bottom:1px solid var(--line);padding:10px 22px}
.top .who{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.content{padding:20px 22px 40px;max-width:1300px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:16px}
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.stat b{display:block;font-size:24px;font-weight:600}
.stat span{color:var(--muted);font-size:12.5px}
a.stat:hover{border-color:var(--brand);text-decoration:none}
table{width:100%;border-collapse:collapse;background:var(--panel)}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);font-weight:600;background:#fafbfc}
tr:hover td{background:#fafcff}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.tablewrap table{border:0}
label{display:block;font-size:12.5px;color:var(--muted);margin:10px 0 4px}
input[type=text],input[type=password],input[type=email],input[type=number],input[type=date],input[type=tel],input[type=search],select,textarea{
  width:100%;padding:8px 10px;border:1px solid #c9d1dc;border-radius:6px;font:inherit;background:#fff;color:var(--ink)}
textarea{min-height:70px}
input:focus,select:focus,textarea:focus{outline:2px solid #9cc0f5;border-color:var(--brand)}
.row{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.btn,button{display:inline-block;padding:8px 14px;border-radius:6px;border:1px solid var(--brand);background:var(--brand);color:var(--brand-ink);font:inherit;cursor:pointer;text-decoration:none}
.btn:hover,button:hover{filter:brightness(1.08);text-decoration:none}
.btn.ghost,button.ghost{background:#fff;color:var(--brand)}
.btn.bad,button.bad{background:var(--bad);border-color:var(--bad)}
.btn.small,button.small{padding:4px 9px;font-size:12.5px}
.inline{display:inline}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.pill{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;background:#eef1f5;color:var(--muted)}
.pill.ok{background:var(--ok-bg);color:var(--ok)}
.pill.warn{background:var(--warn-bg);color:var(--warn)}
.pill.bad{background:var(--bad-bg);color:var(--bad)}
.pill.info{background:var(--info-bg);color:var(--brand)}
.msg{padding:10px 14px;border-radius:6px;margin-bottom:12px;border:1px solid}
.msg.success{background:var(--ok-bg);border-color:#b6dfc6;color:#0f5132}
.msg.error{background:var(--bad-bg);border-color:#f3c2be;color:#842029}
.msg.warning{background:var(--warn-bg);border-color:#f2d59b;color:#6b4200}
.msg.info{background:var(--info-bg);border-color:#c5d8f5}
.banner{padding:9px 22px;font-size:13.5px;border-bottom:1px solid var(--line)}
.banner.warn{background:var(--warn-bg)}
.banner.bad{background:var(--bad-bg)}
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin:14px 0 16px;flex-wrap:wrap}
.tabs a{padding:8px 14px;border:1px solid transparent;border-bottom:0;border-radius:6px 6px 0 0;color:var(--muted)}
.tabs a.on{background:var(--panel);border-color:var(--line);color:var(--ink);margin-bottom:-1px}
.auth{max-width:420px;margin:7vh auto;padding:0 16px}
.auth .card{padding:26px}
.auth h1{margin-bottom:2px}
.checks{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:4px 14px}
.checks label{display:flex;gap:8px;align-items:center;color:var(--ink);font-size:13.5px;margin:4px 0}
details summary{cursor:pointer;color:var(--brand)}
pre{background:#0f1726;color:#d8e2f0;padding:12px;border-radius:6px;overflow:auto;font-size:12px;max-height:340px}
.foot{color:var(--muted);font-size:12px;padding:16px 22px}
@media (max-width:800px){
  .shell{flex-direction:column}
  .side{width:auto}
  .side nav{display:flex;flex-wrap:wrap}
  .side nav .sec{display:none}
  .side nav a{padding:6px 12px;border-left:0}
  .content,.top{padding-left:16px;padding-right:16px}
}