:root{
  --bg:#0f1115; --surface:#171a21; --surface2:#1f232c; --border:#2a2f3a;
  --text:#e7e9ee; --muted:#9aa3b2; --accent:#4f8cff; --accent2:#3b6fd6;
  --green:#36d399; --amber:#fbbd23; --grey:#6b7280; --red:#f87272;
  --radius:14px; --shadow:0 8px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--text);font-size:15px}
a{color:var(--accent);text-decoration:none}
.muted{color:var(--muted)}
.error{color:var(--red);font-size:14px}
.btn{border:1px solid var(--border);background:var(--surface2);color:var(--text);
  padding:9px 16px;border-radius:10px;cursor:pointer;font-size:14px;font-weight:600;transition:.15s}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent2)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.icon{padding:9px 11px;font-size:14px;line-height:1}
.btn.danger:hover{border-color:var(--red);color:var(--red)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}

/* Auth */
body.auth{display:grid;place-items:center;min-height:100vh}
.auth-card{padding:34px;width:340px;display:flex;flex-direction:column;gap:14px}
.auth-card h1{margin:0;font-size:24px}
.auth-card label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
.auth-card input{background:var(--surface2);border:1px solid var(--border);color:var(--text);
  padding:11px;border-radius:10px;font-size:15px}

/* App shell */
.topbar{display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;border-bottom:1px solid var(--border);background:var(--surface)}
.brand{font-weight:800;font-size:18px;letter-spacing:.3px}
.brand span{color:var(--accent)}
.userbox{display:flex;align-items:center;gap:14px;color:var(--muted);font-size:14px}
.wrap{max-width:1100px;margin:0 auto;padding:28px 24px}
.pagehead{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.pagehead h2{margin:0;font-size:22px}

/* Table */
table{width:100%;border-collapse:collapse;overflow:hidden;border-radius:var(--radius)}
th,td{text-align:left;padding:14px 16px;border-bottom:1px solid var(--border)}
th{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);background:var(--surface2)}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--surface2)}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:8px;vertical-align:middle}
.dot.online{background:var(--green);box-shadow:0 0 0 3px rgba(54,211,153,.18)}
.dot.offline{background:var(--grey)}
.pill{font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px}
.pill.online{color:var(--green);background:rgba(54,211,153,.12)}
.pill.offline{color:var(--muted);background:rgba(107,114,128,.15)}
.batt{font-variant-numeric:tabular-nums}
.statuscell{display:inline-flex;align-items:center;gap:2px}
.grip{cursor:grab;color:var(--muted);font-size:15px;line-height:1;padding:0 6px 0 0;user-select:none;touch-action:none;opacity:.5;transition:opacity .15s}
tbody tr:hover .grip{opacity:1}
.grip:active{cursor:grabbing}
tr.dragging{opacity:.55;background:var(--surface2)}
body.reordering{user-select:none;cursor:grabbing}
.empty{padding:50px;text-align:center;color:var(--muted)}

/* Modal */
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.55);display:grid;place-items:center;z-index:50}
.modal{padding:28px;width:380px;display:flex;flex-direction:column;gap:14px}
.modal h3{margin:0}
.code{font-size:30px;font-weight:800;letter-spacing:3px;text-align:center;
  background:var(--surface2);border:1px dashed var(--border);border-radius:12px;padding:16px}
.row{display:flex;gap:10px;justify-content:flex-end}
.hide{display:none}