:root{--ink:#101827;--muted:#687386;--line:#e5e9f0;--bg:#f6f8fb;--card:#fff;--accent:#3859f2;--good:#14804a;--bad:#b42318}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}a{color:inherit}.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}.side{background:#0f1727;color:#fff;padding:24px 18px}.brand{font-weight:800;font-size:24px;letter-spacing:.5px;margin-bottom:30px}.brand small{display:block;font-weight:500;font-size:11px;color:#aab5c6;letter-spacing:1.2px;margin-top:3px}.nav a{display:block;text-decoration:none;padding:11px 12px;border-radius:9px;color:#d8deea;margin:3px 0}.nav a:hover,.nav a.active{background:#1b2740;color:#fff}.main{padding:28px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.top h1{margin:0;font-size:25px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:0 6px 22px rgba(16,24,39,.04)}.metric b{display:block;font-size:29px;margin-top:6px}.form{max-width:760px}.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{margin-bottom:13px}.field label{display:block;font-size:13px;font-weight:650;margin-bottom:6px}.field input,.field select{width:100%;padding:11px 12px;border:1px solid #ccd3df;border-radius:9px;background:#fff;font:inherit}.btn{display:inline-block;border:0;border-radius:9px;padding:10px 15px;background:var(--accent);color:white;font-weight:700;text-decoration:none;cursor:pointer}.btn.secondary{background:#e9edf6;color:#202b3d}.btn.danger{background:#b42318}.table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}.table th,.table td{padding:12px 13px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}.table th{background:#f8fafc;color:#445064}.pill{display:inline-block;padding:4px 8px;border-radius:999px;font-size:11px;font-weight:800}.online{background:#dcfce7;color:#166534}.offline{background:#fee2e2;color:#991b1b}.alert{padding:11px 13px;border-radius:9px;margin-bottom:14px;background:#eef3ff;color:#2942a0}.alert.err{background:#fff0f0;color:#9d1c1c}.login{min-height:100vh;display:grid;place-items:center;background:#f4f6fb}.loginbox{width:min(420px,92vw);background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:0 18px 50px rgba(16,24,39,.08)}.loginbox h1{margin:0 0 4px}.loginbox .brandline{font-weight:850;letter-spacing:1px;color:#17233a;margin-bottom:22px}.actions{display:flex;gap:8px;flex-wrap:wrap}.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:800;letter-spacing:1px}.empty{padding:24px;text-align:center;color:var(--muted)}@media(max-width:900px){.shell{grid-template-columns:1fr}.side{position:static}.grid{grid-template-columns:1fr 1fr}.row{grid-template-columns:1fr}}@media(max-width:560px){.grid{grid-template-columns:1fr}.main{padding:18px}}