:root{
  --bg:#0f1419; --panel:#1a212b; --panel2:#222b38; --fg:#e6edf3; --muted:#8b98a8;
  --accent:#3b82f6; --ok:#22c55e; --warn:#f59e0b; --off:#64748b; --danger:#ef4444;
  --border:#2b3542;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code{background:var(--panel2);padding:1px 5px;border-radius:4px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.9em}
code.break{word-break:break-all}
.topbar{display:flex;align-items:center;gap:20px;padding:12px 24px;background:var(--panel);border-bottom:1px solid var(--border)}
.brand{font-weight:700;font-size:18px}
.topbar nav{display:flex;gap:4px;flex:1}
.topbar nav a{padding:6px 12px;border-radius:6px;color:var(--fg)}
.topbar nav a.active{background:var(--accent);color:#fff}
.topbar nav a:hover{background:var(--panel2);text-decoration:none}
.logout{display:flex;align-items:center;gap:10px}
.user{color:var(--muted)}
main{max-width:980px;margin:0 auto;padding:24px}
h1{font-size:24px;margin:0 0 16px}
h2{font-size:17px;margin:0 0 12px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:18px;margin-bottom:18px}
.login-card{max-width:360px;margin:60px auto}
.row-between{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.stat{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px;text-align:center}
.stat .num{font-size:30px;font-weight:700}
.stat .lbl{color:var(--muted);font-size:13px}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border);vertical-align:middle}
th{color:var(--muted);font-weight:600;font-size:13px}
table.kv th{width:220px}
.muted{color:var(--muted)}
label{display:block;margin-bottom:14px;font-size:14px;color:var(--muted)}
input,select{display:block;width:100%;margin-top:5px;padding:9px 11px;background:var(--panel2);border:1px solid var(--border);border-radius:7px;color:var(--fg);font-size:14px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.subform{background:var(--panel2);border:1px dashed var(--border);border-radius:8px;padding:12px;margin-bottom:14px}
button,.btn{display:inline-block;cursor:pointer;background:var(--accent);color:#fff;border:none;padding:9px 16px;border-radius:7px;font-size:14px;font-weight:600}
button:hover,.btn:hover{filter:brightness(1.1);text-decoration:none}
button.danger,.danger{background:var(--danger)}
.actions{display:flex;gap:8px;align-items:center}
.actions form{margin:0}
.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600}
.badge.ok{background:rgba(34,197,94,.18);color:var(--ok)}
.badge.off{background:rgba(100,116,139,.2);color:var(--off)}
.badge.warn{background:rgba(245,158,11,.18);color:var(--warn)}
.flash{padding:11px 15px;border-radius:8px;margin-bottom:16px}
.flash-ok{background:rgba(34,197,94,.15);border:1px solid var(--ok)}
.flash-err{background:rgba(239,68,68,.15);border:1px solid var(--danger)}
pre.cmd,pre.conf{background:#0b0e12;border:1px solid var(--border);border-radius:8px;padding:12px;overflow-x:auto;white-space:pre-wrap;word-break:break-all}
.qr-wrap{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-start}
.qr-wrap img{background:#fff;padding:8px;border-radius:8px}
details summary{cursor:pointer;color:var(--accent)}
footer{max-width:980px;margin:0 auto;padding:20px 24px;color:var(--muted)}