:root{--bg:#f4f7fb;--panel:#fff;--text:#172033;--muted:#718096;--line:#e5eaf2;--primary:#315efb;--green:#18a66a;--red:#e04f5f;--shadow:0 10px 30px rgba(30,50,80,.07)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body.dark{--bg:#0e1420;--panel:#151e2d;--text:#eef3fa;--muted:#96a5b9;--line:#293548}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}label{display:grid;gap:7px;font-size:12px;color:var(--muted);margin-bottom:14px}input,select,textarea{width:100%;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:9px;padding:11px;outline:0}input:focus,select:focus,textarea:focus{border-color:var(--primary)}.sidebar{position:fixed;left:0;top:0;bottom:0;width:250px;background:var(--panel);border-right:1px solid var(--line);padding:22px 15px;display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;padding:2px 10px 27px}.brand>span,.logo{width:39px;height:39px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.sidebar nav{display:grid;gap:6px}.sidebar nav a{padding:12px;border-radius:10px;color:var(--muted)}.sidebar nav a.active,.sidebar nav a:hover{background:rgba(49,94,251,.09);color:var(--primary);font-weight:650}.side-foot{margin-top:auto;border-top:1px solid var(--line);padding:15px 10px;color:var(--muted);font-size:12px}main{margin-left:250px;min-height:100vh}header{height:70px;background:var(--panel);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 28px;position:sticky;top:0;z-index:3}.top{display:flex;gap:9px;align-items:center}.theme,.logout{border:1px solid var(--line);background:var(--panel);color:var(--text);padding:9px 12px;border-radius:9px}.content{max-width:1450px;margin:auto;padding:28px}.heading{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;margin-bottom:20px}.heading h1{margin:0 0 5px;font-size:28px}.heading p{margin:0;color:var(--muted)}.btn{display:inline-block;border:1px solid var(--line);background:var(--panel);color:var(--text);padding:10px 14px;border-radius:9px}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.full{width:100%}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:18px}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow)}.stat{display:flex;justify-content:space-between}.stat small{color:var(--muted)}.stat strong{display:block;font-size:27px;margin:12px 0 3px}.stat em{font-size:11px;color:var(--green);font-style:normal}.staticon{width:40px;height:40px;border-radius:10px;background:rgba(49,94,251,.09);display:grid;place-items:center;color:var(--primary)}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.card h3{margin-top:0}.row{display:flex;justify-content:space-between;align-items:center;padding:13px 0;border-bottom:1px solid var(--line)}.row:last-child{border:0}.row small{display:block;color:var(--muted);margin-top:3px}.badge{font-size:11px;border-radius:20px;padding:5px 8px}.badge.online{background:rgba(24,166,106,.1);color:var(--green)}.badge.offline{background:rgba(224,79,95,.1);color:var(--red)}.badge.unknown{background:rgba(113,128,150,.12);color:var(--muted)}.bars{height:210px;display:flex;align-items:end;gap:9px;padding:10px}.bars i{flex:1;background:var(--primary);border-radius:6px 6px 2px 2px;opacity:.85}.muted{color:var(--muted)}.small{font-size:12px}.table{overflow:auto}.table table{width:100%;border-collapse:collapse;min-width:800px}.table th,.table td{padding:13px 10px;text-align:left;border-bottom:1px solid var(--line);font-size:13px}.table th{color:var(--muted);font-weight:600}.table td small{display:block;color:var(--muted);margin-top:3px}.mini{display:inline-block;border:1px solid var(--line);padding:6px 8px;border-radius:7px;font-size:11px;margin:2px}.form-card{margin-top:16px}.formgrid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.notice{background:rgba(49,94,251,.07);padding:13px;border-radius:9px;color:var(--muted);margin-bottom:15px}.kv{display:grid;grid-template-columns:120px 1fr;padding:12px 0;border-bottom:1px solid var(--line)}.secret{font-family:ui-monospace,monospace}.empty{padding:30px;text-align:center;color:var(--muted)}.center{min-height:100vh;display:grid;place-items:center;padding:20px}.auth-card{width:min(470px,100%);background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--shadow)}.auth-card h1{margin:14px 0 6px}.auth-card p{color:var(--muted)}.alert{padding:11px;border-radius:8px;margin:12px 0;font-size:13px}.alert.err{background:#fff0f1;color:var(--red)}.alert.ok{background:#eaf9f2;color:var(--green)}

/* ---------- Responsive V3 ---------- */
.mobile-menu{display:none;border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:10px;padding:9px 12px;font-size:20px;line-height:1}
.filterbar{padding:10px;margin-bottom:10px}.filterbar input{border:0;background:transparent}
.perm-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:18px}
.check{display:flex;align-items:flex-start;gap:9px;padding:12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);margin:0}
.check input{width:auto;margin-top:3px}.check span{display:grid;gap:3px;color:var(--text)}.check small{color:var(--muted)}.danger-link{color:var(--red)}
.overlay{display:none}
@media (max-width:1100px){
  .mobile-menu{display:block}
  .sidebar{transform:translateX(-105%);transition:transform .2s ease;z-index:50;width:270px;box-shadow:0 20px 50px rgba(0,0,0,.18)}
  .sidebar.open{transform:translateX(0)}
  .sidebar nav a{font-size:14px;text-align:left;height:auto}
  .sidebar nav a span{font-size:14px}.brand div{display:block}.side-foot{display:block}
  main{margin-left:0;width:100%;min-width:0}
  header{padding:0 14px;height:64px}
  .content{padding:20px;max-width:none}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid2{grid-template-columns:1fr}
  .formgrid{grid-template-columns:1fr 1fr}
  .perm-grid{grid-template-columns:1fr}
}
@media (max-width:700px){
  body{overflow-x:hidden}
  header{height:60px;padding:0 12px}
  .content{padding:14px 12px 90px}
  .heading{display:block;margin-bottom:15px}
  .heading h1{font-size:25px;line-height:1.15}
  .heading p{font-size:13px;line-height:1.45;margin-top:5px}
  .heading>.btn,.heading>a.btn{display:block;width:100%;margin-top:13px;text-align:center}
  .cards{grid-template-columns:1fr 1fr;gap:9px}
  .card{padding:14px;border-radius:13px}
  .stat{min-height:126px}.stat strong{font-size:24px;margin:10px 0 4px}
  .staticon{width:36px;height:36px}
  .row{gap:10px;align-items:flex-start}.row>span:first-child{min-width:0}.row b{word-break:break-word}
  .grid2{gap:12px}
  .formgrid{grid-template-columns:1fr;gap:0}
  .btn{min-height:44px;display:inline-flex;align-items:center;justify-content:center}
  .top .theme,.top .logout{min-height:42px}
  .top .logout{padding:8px 11px}
  .table{overflow:visible;padding:10px}
  .table table,.table tbody,.table tr,.table td{display:block;width:100%;min-width:0}
  .table table{border-collapse:separate}
  .table thead{display:none}
  .table tbody{display:grid;gap:10px}
  .table tr{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:8px 12px}
  .table td{display:grid;grid-template-columns:92px minmax(0,1fr);gap:8px;align-items:start;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px;overflow-wrap:anywhere}
  .table td:last-child{border-bottom:0}
  .table td::before{color:var(--muted);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}
  .table td:nth-child(1)::before{content:"Device"}
  .table td:nth-child(2)::before{content:"Endpoint"}
  .table td:nth-child(3)::before{content:"Status"}
  .table td:nth-child(4)::before{content:"Latency"}
  .table td:nth-child(5)::before{content:"Last seen"}
  .table td:nth-child(6)::before{content:"Actions"}
  .table td small{margin-top:2px}
  .mini{min-height:36px;padding:8px 10px}
  .filterbar{position:static;margin-bottom:10px}
  .filterbar input{font-size:14px;padding:10px 6px}
  .notice{font-size:12px;line-height:1.5}
  .bars{height:150px;gap:5px}
  .kv{grid-template-columns:95px 1fr;gap:8px}
}
@media (max-width:420px){
  .cards{grid-template-columns:1fr 1fr;gap:8px}
  .stat{min-height:118px}.stat strong{font-size:21px}
  .stat small{font-size:11px}.stat em{font-size:10px}
  .table td{grid-template-columns:78px minmax(0,1fr);font-size:12px}
  .heading h1{font-size:23px}
  .auth-card{padding:20px}
}

@media(max-width:1100px){.overlay{position:fixed;inset:0;background:rgba(8,15,30,.45);z-index:40}.sidebar.open~main{position:relative}}