:root{
  --bg:#0b1120;--panel:#111827;--panel2:#172033;--text:#e5e7eb;--muted:#9ca3af;--line:#253044;
  --primary:#38bdf8;--primary2:#0ea5e9;--danger:#ef4444;--ok:#22c55e;--warn:#f59e0b;
  --shadow:0 18px 50px rgba(0,0,0,.24);--radius:18px;
}
*{box-sizing:border-box} body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:linear-gradient(135deg,#07101e,#0b1120 45%,#111827);color:var(--text);min-height:100vh}.app-shell{display:flex;min-height:100vh}.sidebar{width:280px;background:rgba(17,24,39,.86);border-right:1px solid var(--line);padding:24px;display:flex;flex-direction:column;gap:22px;position:sticky;top:0;height:100vh}.brand{display:flex;gap:14px;align-items:center}.brand-icon{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,#38bdf8,#6366f1);display:grid;place-items:center;font-weight:900;color:white}.brand strong{display:block;font-size:18px}.brand span{font-size:12px;color:var(--muted)}nav{display:flex;flex-direction:column;gap:7px}nav a{color:var(--text);text-decoration:none;padding:12px 14px;border-radius:12px;background:transparent;border:1px solid transparent}nav a:hover{background:rgba(56,189,248,.12);border-color:rgba(56,189,248,.22)}.sidebar-footer{margin-top:auto}.user-pill{border:1px solid var(--line);background:rgba(255,255,255,.04);padding:12px;border-radius:14px}.user-pill span{display:block;font-weight:700}.user-pill small{color:var(--muted)}.logout{display:block;margin-top:10px;color:#fca5a5;text-decoration:none}.content{flex:1;padding:28px;max-width:1500px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.topbar h1{margin:0;font-size:28px}.grid{display:grid;gap:18px}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:rgba(17,24,39,.84);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}.card h2,.card h3{margin-top:0}.muted{color:var(--muted)}.alert{padding:14px 16px;border-radius:14px;margin:14px 0;border:1px solid}.alert-success{background:rgba(34,197,94,.12);border-color:rgba(34,197,94,.35)}.alert-error{background:rgba(239,68,68,.12);border-color:rgba(239,68,68,.35)}.alert-info{background:rgba(56,189,248,.12);border-color:rgba(56,189,248,.35)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:10px 14px;color:white;background:linear-gradient(135deg,var(--primary2),#2563eb);font-weight:800;cursor:pointer;text-decoration:none}.btn.secondary{background:#263244;color:#e5e7eb}.btn.danger{background:linear-gradient(135deg,#ef4444,#b91c1c)}.btn.ghost{background:transparent;border:1px solid var(--line)}.btn.small{padding:7px 10px;font-size:12px;border-radius:10px}.btn:disabled{opacity:.55;cursor:not-allowed}.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.form{display:grid;gap:15px}.field{display:grid;gap:8px}.field label{font-weight:800;color:#cbd5e1}input,select,textarea{width:100%;background:#0b1220;border:1px solid #2b3549;color:#e5e7eb;border-radius:12px;padding:12px;font:inherit}input:focus,select:focus,textarea:focus{outline:2px solid rgba(56,189,248,.45);border-color:#38bdf8}.checkbox{display:flex;gap:10px;align-items:center}.checkbox input{width:auto}.table-wrap{overflow:auto;border-radius:16px;border:1px solid var(--line)}table{width:100%;border-collapse:collapse;background:rgba(255,255,255,.02)}th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}th{color:#cbd5e1;font-size:13px;background:rgba(255,255,255,.04)}tr:last-child td{border-bottom:0}.badge{display:inline-block;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:900}.badge.ok{background:rgba(34,197,94,.15);color:#86efac}.badge.off{background:rgba(148,163,184,.14);color:#cbd5e1}.badge.warn{background:rgba(245,158,11,.15);color:#fcd34d}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}.login-card{width:100%;max-width:430px}.login-card .brand{margin-bottom:20px}.helpbox{background:rgba(56,189,248,.08);border:1px solid rgba(56,189,248,.24);border-radius:14px;padding:14px;color:#cdeeff}.code{font-family:Consolas,monospace;background:#07101e;border:1px solid var(--line);border-radius:12px;padding:10px;overflow:auto;white-space:nowrap}.preview-frame{width:220px;height:124px;background:#050a13;border:1px solid var(--line);border-radius:12px;display:grid;place-items:center;overflow:hidden}.preview-frame img{max-width:100%;max-height:100%;filter:brightness(.8) contrast(.95)}@media(max-width:900px){.app-shell{display:block}.sidebar{width:auto;height:auto;position:static}.content{padding:18px}.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}.topbar h1{font-size:22px}}