:root{
    --bg:#0a0a13; --bg-elev:#141422; --bg-elev-2:#1c1c2e; --bg-soft:#10101a;
    --border:#23233a; --border-strong:#2f2f4a;
    --text:#ececf2; --text-soft:#b6b6c8; --muted:#85859c;
    --brand:#8b5cf6; --brand-2:#a78bfa; --brand-soft:rgba(139,92,246,.12);
    --brand-strong:#7c3aed;
    --green:#34d399; --red:#f87171; --amber:#fbbf24;
    --r-sm:8px; --r-md:12px; --r-lg:16px;
    --shadow-md:0 8px 24px rgba(0,0,0,.35);
    --font-sans:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  }
  *,*::before,*::after{box-sizing:border-box}
  html,body{margin:0;padding:0}
  body{background:var(--bg);color:var(--text);font:14px/1.55 var(--font-sans);
       -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
  a{color:var(--brand-2);text-decoration:none}
  a:hover{text-decoration:underline}
  code{font-family:var(--font-mono);font-size:12.5px}

  /* Top navigation */
  .topnav{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:24px;
          padding:14px 28px;background:rgba(10,10,19,.85);
          backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
  .brand{display:flex;align-items:center;gap:12px;color:inherit;text-decoration:none}
  .brand:hover{text-decoration:none}
  .brand-mark{width:34px;height:34px;border-radius:10px;
              background:linear-gradient(135deg,var(--brand),var(--brand-strong));
              display:grid;place-items:center;color:#fff;font-weight:700;
              font-size:13px;letter-spacing:-.02em;
              box-shadow:0 4px 14px rgba(139,92,246,.35)}
  .brand-text{display:flex;flex-direction:column;line-height:1.1}
  .brand-name{font-size:14.5px;font-weight:650;letter-spacing:-.01em}
  .brand-sub{font-size:11.5px;color:var(--muted);margin-top:2px}
  .nav-links{display:flex;align-items:center;gap:4px;flex:1}
  .nav-link{color:var(--text-soft);padding:8px 13px;border-radius:8px;
            font-size:13px;font-weight:500;transition:background .12s,color .12s}
  .nav-link:hover{color:var(--text);background:var(--bg-elev);text-decoration:none}
  .nav-link.active{color:var(--brand-2);background:var(--brand-soft)}
  .nav-actions{display:flex;align-items:center;gap:8px}
  .nav-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;
             height:18px;margin-left:6px;padding:0 5px;border-radius:999px;
             background:var(--brand);color:#fff;font-size:11px;font-weight:700}
  .nav-badge[hidden]{display:none}

  /* Page layout */
  main{max-width:1180px;margin:0 auto;padding:34px 28px 60px}
  .page-head{margin:0 0 28px}
  .page-title{margin:0 0 6px;font-size:22px;font-weight:650;letter-spacing:-.02em}
  .page-subtitle{margin:0;color:var(--muted);font-size:13.5px}

  /* Section headings (small, refined, uppercase) */
  h2.section{font-size:11.5px;font-weight:600;text-transform:uppercase;
             letter-spacing:.08em;color:var(--muted);
             margin:34px 0 14px;display:flex;align-items:center;gap:10px}
  h2.section::before{content:"";display:block;width:14px;height:1px;
                     background:var(--brand)}
  h3{margin:0 0 12px;font-size:14px;font-weight:600;letter-spacing:-.01em}

  /* Cards & panels */
  .panel{background:var(--bg-elev);border:1px solid var(--border);
         border-radius:var(--r-lg);padding:22px;margin-bottom:18px}
  .panel-tight{padding:16px 18px}
  .card{background:var(--bg-elev);border:1px solid var(--border);
        border-radius:var(--r-lg);padding:18px}
  .stat-grid,.cards{display:grid;
             grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
             gap:14px;margin-bottom:28px}
  .stat-label,.card .label{color:var(--muted);font-size:11.5px;font-weight:600;
              text-transform:uppercase;letter-spacing:.05em}
  .stat-value,.card .value{font-size:26px;font-weight:680;margin-top:6px;
              letter-spacing:-.02em}
  .stat-value small,.card .value small{color:var(--muted);font-size:13px;
              font-weight:500;margin-left:4px}
  .stat-hint,.card .hint{color:var(--muted);font-size:12px;margin-top:6px}
  .stat-value.green,.value.green{color:var(--green)}
  .stat-value.red,.value.red{color:var(--red)}
  .stat-value.amber,.value.amber{color:var(--amber)}

  /* Forms */
  label{font-size:12px;color:var(--muted);font-weight:500;
        display:block;margin:0 0 6px}
  input,select,textarea{width:100%;background:var(--bg-soft);
        border:1px solid var(--border);color:var(--text);
        border-radius:var(--r-sm);padding:10px 12px;
        font:13.5px var(--font-sans);
        transition:border-color .12s,background .12s}
  input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);
        background:var(--bg-elev)}
  input[type=date]{color-scheme:dark}
  input[type=checkbox]{width:auto;accent-color:var(--brand);cursor:pointer}
  .field-row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
  .field-grow{flex:1;min-width:220px}
  .field-col{display:flex;flex-direction:column}

  /* Buttons */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
       background:var(--bg-elev-2);border:1px solid var(--border);color:var(--text);
       border-radius:var(--r-sm);padding:9px 14px;
       font:600 13px var(--font-sans);cursor:pointer;
       transition:background .12s,border-color .12s,color .12s}
  .btn:hover{border-color:var(--brand)}
  .btn:disabled{opacity:.5;cursor:not-allowed}
  .btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-strong);border-color:var(--brand-strong)}
  .btn-ghost{background:transparent;border-color:transparent;color:var(--text-soft)}
  .btn-ghost:hover{background:var(--bg-elev);color:var(--text);border-color:var(--border)}
  .btn-danger{background:transparent;border:none;color:var(--red);
              font:500 12.5px var(--font-sans);cursor:pointer;padding:4px 6px}
  .btn-danger:hover{color:#fca5a5;text-decoration:underline}
  .btn-link{background:none;border:none;color:var(--brand-2);
            cursor:pointer;font:500 12.5px var(--font-sans);padding:0}
  .btn-link:hover{text-decoration:underline}

  /* Tables */
  .tablewrap{overflow:auto;border:1px solid var(--border);
             border-radius:var(--r-lg);background:var(--bg-elev)}
  table{width:100%;border-collapse:collapse;font-size:13px}
  th,td{text-align:left;padding:11px 14px;
        border-bottom:1px solid var(--border);vertical-align:middle}
  th{color:var(--muted);font-weight:600;font-size:11.5px;
     text-transform:uppercase;letter-spacing:.04em;
     background:var(--bg-elev)}
  tbody tr:last-child td{border-bottom:none}
  tbody tr:hover{background:var(--bg-elev-2)}

  /* Badges */
  .badge{display:inline-flex;align-items:center;padding:3px 9px;
         border-radius:999px;font-size:11.5px;font-weight:600}
  .badge.on,.badge.working,.badge.st-done{background:rgba(52,211,153,.14);color:var(--green)}
  .badge.off,.badge.blocked,.badge.st-failed{background:rgba(248,113,113,.14);color:var(--red)}
  .badge.unknown,.badge.st-pending,.badge.st-partial{background:rgba(251,191,36,.14);color:var(--amber)}
  .badge.self,.badge.st-running{background:var(--brand-soft);color:var(--brand-2)}
  .badge.st-cancelled{background:rgba(154,154,176,.16);color:var(--muted)}

  /* Misc */
  .mono{font-family:var(--font-mono);font-size:12.5px}
  .muted{color:var(--muted)}
  .chip{display:inline-block;background:var(--bg-elev-2);border:1px solid var(--border);
        border-radius:var(--r-sm);padding:3px 9px;font-size:12px;margin:2px 4px 2px 0}
  .result{margin-top:14px;padding:16px;background:var(--brand-soft);
          border:1px solid var(--brand);border-radius:var(--r-md);display:none}
  .result.show{display:block}
  .err{color:var(--red);font-size:12.5px;margin-top:10px;min-height:16px}
  .warn{color:var(--amber);font-size:12px;margin-top:8px}
  .keybox{display:flex;gap:8px;align-items:center;margin-top:8px}
  .keybox code{flex:1;background:var(--bg);border:1px solid var(--border);
               border-radius:var(--r-sm);padding:9px 11px;font-size:13px;
               font-family:var(--font-mono);word-break:break-all}
  .copy{background:var(--brand);color:#fff;border:none;border-radius:var(--r-sm);
        padding:9px 12px;font-size:12.5px;font-weight:600;cursor:pointer}
  .copy:hover{background:var(--brand-strong)}
  .subtabs{display:flex;gap:4px;margin:-12px 0 20px;border-bottom:1px solid var(--border)}
  .subtab{padding:9px 14px;font-size:13.5px;font-weight:550;color:var(--muted);
          text-decoration:none;border-bottom:2px solid transparent;margin-bottom:-1px;
          display:inline-flex;align-items:center}
  .subtab:hover{color:var(--text)}
  .subtab.active{color:var(--text);border-bottom-color:var(--brand)}

  @media (max-width:760px){
    .topnav{padding:12px 16px;gap:12px;flex-wrap:wrap}
    .nav-links{width:100%;order:3;overflow-x:auto;flex-wrap:nowrap;
               scrollbar-width:none}
    .nav-links::-webkit-scrollbar{display:none}
    main{padding:24px 16px 40px}
  }

  /* Admin-Portal */
  .tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-bottom:34px}
  .tile{position:relative;display:flex;flex-direction:column;gap:10px;min-height:150px;
        background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--r-lg);
        padding:20px;color:var(--text);text-decoration:none;
        transition:border-color .15s,background .15s,transform .12s}
  a.tile:hover{border-color:var(--accent,var(--brand));background:var(--bg-elev-2);
        text-decoration:none;transform:translateY(-2px)}
  .tile.disabled{opacity:.55;cursor:default}
  .tile .tmark{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
        background:var(--accent,var(--brand));color:#0a0a13;font-weight:750;font-size:14px}
  .tile .tname{font-size:16px;font-weight:650;letter-spacing:-.01em}
  .tile .tdesc{color:var(--muted);font-size:12.5px;flex:1}
  .tile .tfoot{display:flex;justify-content:space-between;align-items:center;
        color:var(--muted);font-size:12px}
  .tile .tgo{color:var(--accent,var(--brand-2));font-weight:600}
  .switch{position:relative;display:inline-block;width:40px;height:22px;flex:none}
  .switch input{opacity:0;width:0;height:0}
  .switch span{position:absolute;inset:0;border-radius:999px;background:var(--border-strong);
        cursor:pointer;transition:background .15s}
  .switch span::before{content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;
        border-radius:50%;background:#fff;transition:transform .15s}
  .switch input:checked + span{background:var(--green)}
  .switch input:checked + span::before{transform:translateX(18px)}
  .switch input:disabled + span{opacity:.5;cursor:wait}
  .pchip{display:inline-flex;align-items:center;gap:5px;padding:2px 8px;border-radius:999px;
        font-size:11.5px;font-weight:600;margin:2px 4px 2px 0;
        background:color-mix(in srgb,var(--accent,var(--brand)) 16%,transparent);
        color:var(--accent,var(--brand-2))}
  .pchip.off{background:rgba(154,154,176,.14);color:var(--muted);text-decoration:line-through}
  .filterbar{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;background:var(--bg-elev);
        border:1px solid var(--border);border-radius:var(--r-lg);padding:16px;margin-bottom:14px}
  .filterbar > div{flex:1;min-width:180px}
  .notice{background:rgba(251,191,36,.10);border:1px solid rgba(251,191,36,.35);color:var(--amber);
        border-radius:var(--r-md);padding:10px 14px;font-size:13px;margin-bottom:18px}
  dialog{background:var(--bg-elev);color:var(--text);border:1px solid var(--border);
        border-radius:var(--r-lg);padding:22px;width:min(520px,calc(100vw - 32px))}
  dialog::backdrop{background:rgba(0,0,0,.55)}
  dialog label{margin-top:12px}
  .row-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:18px}