:root{
  --bg:#0d1117; --bg2:#111927; --panel:#161f2e; --panel2:#1c2740;
  --border:#243049; --text:#e6edf6; --muted:#8b97ad; --muted2:#5d6982;
  --accent:#3b82f6; --accent2:#60a5fa; --ok:#22c55e; --err:#ef4444;
  --warn:#f59e0b; --radius:12px; --shadow:0 8px 28px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 600px at 80% -10%,#16233b 0%,var(--bg) 55%);
  color:var(--text);
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,sans-serif;
  font-size:14.5px; line-height:1.5; min-height:100vh;
}
a{color:var(--accent2);text-decoration:none}
a:hover{color:#93c5fd}

/* ---- Layout ---- */
.layout{display:flex;min-height:100vh}
.sidebar{
  width:240px;flex-shrink:0;background:linear-gradient(180deg,var(--bg2),#0c1320);
  border-right:1px solid var(--border);display:flex;flex-direction:column;padding:18px 14px;
}
.brand{display:flex;flex-direction:column;align-items:center;gap:6px;padding:6px 10px 18px;border-bottom:1px solid var(--border);margin-bottom:14px}
.brand-logo{width:100%;max-width:185px;height:auto;display:block;border-radius:6px}
.brand-name{font-size:20px;font-weight:700;letter-spacing:.5px}
.brand-sub{font-size:12px;color:var(--muted);font-weight:600;letter-spacing:2px}
.sidebar nav{display:flex;flex-direction:column;gap:4px}
.sidebar nav a{
  color:var(--muted);padding:10px 12px;border-radius:9px;font-weight:500;
  display:flex;align-items:center;gap:10px;transition:.15s;
}
.sidebar nav a:hover{background:var(--panel);color:var(--text)}
.sidebar nav a.active{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(59,130,246,.4)}
.sidebar nav .ico{width:18px;text-align:center;opacity:.9}
.side-foot{margin-top:auto;padding-top:14px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:6px}
.side-foot a{color:var(--muted);padding:6px 12px;border-radius:8px}
.side-foot a:hover{background:var(--panel);color:var(--text)}
.side-foot .logout{color:#fca5a5}

.content{flex:1;padding:26px 34px;max-width:1200px}
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.topbar h1{font-size:23px;font-weight:700;margin:0}

/* ---- Flash ---- */
.flash{padding:11px 16px;border-radius:9px;margin-bottom:18px;font-weight:500}
.flash.ok{background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.4);color:#86efac}
.flash.err{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.4);color:#fca5a5}

/* ---- Cards ---- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.card .label{color:var(--muted);font-size:12.5px;text-transform:uppercase;letter-spacing:.6px}
.card .value{font-size:30px;font-weight:700;margin-top:6px}
.card .value small{font-size:14px;color:var(--muted);font-weight:500}

.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);margin-bottom:22px}
.panel h2{margin:0 0 14px;font-size:16px;font-weight:600}
.panel .sub{color:var(--muted);font-size:13px;margin:-8px 0 14px}

/* ---- Tabelas ---- */
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px;font-weight:600}
tbody tr:hover{background:var(--panel2)}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.rank{color:var(--muted2);width:34px}
.bar{height:6px;background:var(--accent);border-radius:4px;margin-top:5px;opacity:.85}
.mono{font-family:"Cascadia Code",Consolas,monospace}

/* ---- Forms ---- */
form.inline{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;margin-bottom:6px}
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-size:12px;color:var(--muted)}
input[type=text],input[type=password]{
  background:var(--bg2);border:1px solid var(--border);color:var(--text);
  padding:10px 12px;border-radius:9px;font-size:14px;min-width:200px;outline:none;
}
input:focus{border-color:var(--accent)}
textarea{
  background:var(--bg2);border:1px solid var(--border);color:var(--text);
  padding:10px 12px;border-radius:9px;font-size:14px;width:100%;outline:none;
  font-family:"Cascadia Code",Consolas,monospace;resize:vertical;line-height:1.6;
}
textarea:focus{border-color:var(--accent)}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;gap:12px}
.panel-head h2{margin:0}
.btn{
  background:var(--accent);color:#fff;border:none;padding:10px 18px;border-radius:9px;
  font-weight:600;cursor:pointer;font-size:14px;transition:.15s;
  display:inline-block;text-decoration:none;line-height:1.2;
}
.head-actions{display:flex;gap:10px;align-items:center}
input[type=file]{
  background:var(--bg2);border:1px dashed var(--border);color:var(--muted);
  padding:9px 12px;border-radius:9px;font-size:13px;min-width:260px;cursor:pointer;
}
input[type=file]::file-selector-button{
  background:var(--panel2);color:var(--text);border:1px solid var(--border);
  border-radius:7px;padding:6px 12px;margin-right:10px;cursor:pointer;font-weight:600;
}
.btn:hover{background:#2f6fd6}
.btn.danger{background:transparent;border:1px solid rgba(239,68,68,.5);color:#fca5a5;padding:6px 12px}
.btn.danger:hover{background:rgba(239,68,68,.15)}
.btn.ghost{background:var(--panel2);color:var(--text)}

.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11.5px;font-weight:600}
.badge.sys{background:rgba(139,151,173,.18);color:var(--muted)}
.badge.v4{background:rgba(59,130,246,.18);color:var(--accent2)}
.badge.v6{background:rgba(168,85,247,.18);color:#c4b5fd}

.status{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:13.5px;
  padding:8px 18px;border-radius:30px;white-space:nowrap;letter-spacing:.3px}
.status::before{content:"";width:9px;height:9px;border-radius:50%;display:inline-block}
.status.on{background:rgba(34,197,94,.13);color:#4ade80;border:1px solid rgba(34,197,94,.5);
  box-shadow:0 0 16px rgba(34,197,94,.22)}
.status.on::before{background:#22c55e;box-shadow:0 0 8px #22c55e;animation:pulse 2s ease-in-out infinite}
.status.off{background:rgba(239,68,68,.13);color:#f87171;border:1px solid rgba(239,68,68,.5);
  box-shadow:0 0 16px rgba(239,68,68,.18)}
.status.off::before{background:#ef4444;box-shadow:0 0 8px #ef4444}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.dns-actions{display:flex !important;gap:10px;flex-wrap:wrap;align-items:center}
.dns-actions form{margin:0}
.btn.ok{background:#16a34a}
.btn.ok:hover{background:#15803d}
.btn.stop{background:#dc2626;color:#fff}
.btn.stop:hover{background:#b91c1c}

.chips{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.chips a{padding:6px 14px;border-radius:20px;background:var(--panel);border:1px solid var(--border);color:var(--muted)}
.chips a.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ---- Login ---- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-box{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:40px 36px;width:100%;max-width:380px;box-shadow:var(--shadow)}
.login-box .brand{justify-content:center;border:none;margin:0 0 14px;padding:0}
.login-box .brand-logo{max-width:250px}
.login-box p.tag{text-align:center;color:var(--muted);margin:0 0 26px}
.login-box .field{margin-bottom:16px}
.login-box input{width:100%}
.login-box .btn{width:100%;padding:12px}
.chart-box{position:relative;height:280px}
.chart-box-tall{height:440px}
.muted{color:var(--muted)}