:root {
  --bg: #0b0f1a;
  --bg-2: #111726;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-solid: #151c2c;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e7ecf5;
  --muted: #8a94a8;
  --accent: #5b8cff;
  --accent-2: #8a5bff;
  --green: #3ddc97;
  --red: #ff5d6c;
  --amber: #ffb454;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 16px;
}

/* Light theme overrides */
body.light {
  --bg: #eef1f7;
  --bg-2: #ffffff;
  --panel: rgba(0, 0, 0, 0.03);
  --panel-solid: #ffffff;
  --border: rgba(0, 0, 0, 0.10);
  --text: #1b2233;
  --muted: #5b6679;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}
body.light input, body.light select, body.light textarea { background: #f6f8fc; }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(91, 140, 255, 0.18), transparent 60%),
              radial-gradient(900px 500px at -10% 10%, rgba(138, 91, 255, 0.14), transparent 55%),
              var(--bg);
  color: var(--text);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }

.app {
  display: grid;
  grid-template-columns: 248px 1fr;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent);
  border-right: 1px solid var(--border);
  padding: 22px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 10px 22px;
}
.brand .logo {
  width: 38px; height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  font-weight: 800; font-size: 20px; color: white;
  box-shadow: 0 6px 18px rgba(91,140,255,0.45);
}
.brand h1 { font-size: 18px; margin: 0; letter-spacing: .3px; }
.brand small { color: var(--muted); font-size: 11px; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 14px;
  border-radius: 12px;
  color: var(--muted);
  cursor: pointer;
  font-weight: 500;
  font-size: 14.5px;
  transition: all .15s ease;
  user-select: none;
}
.nav-item:hover { background: var(--panel); color: var(--text); }
.nav-item.active {
  background: linear-gradient(135deg, rgba(91,140,255,0.18), rgba(138,91,255,0.14));
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border);
}
.nav-item .ic { width: 20px; text-align: center; }
.sidebar .spacer { flex: 1; }
.node-pill {
  margin-top: 8px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}
.node-pill b { color: var(--text); }
.dot { display:inline-block; width:8px; height:8px; border-radius:50%; background: var(--green); margin-right:6px; box-shadow:0 0 8px var(--green);}

/* Main */
.main { padding: 28px 34px 60px; max-width: 1200px; width: 100%; }
.page-head { display:flex; align-items:center; justify-content:space-between; margin-bottom: 22px; gap: 16px; flex-wrap: wrap;}
.page-head h2 { margin: 0; font-size: 24px; }
.page-head p { margin: 4px 0 0; color: var(--muted); font-size: 13.5px; }

.toolbar { display:flex; gap:10px; align-items:center; flex-wrap: wrap; }

/* Cards */
.grid { display:grid; gap:18px; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 980px){ .grid.cols-4{grid-template-columns:repeat(2,1fr);} .grid.cols-3,.grid.cols-2{grid-template-columns:1fr;} .app{grid-template-columns:1fr;} .sidebar{position:relative;height:auto;flex-direction:row;flex-wrap:wrap;}}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 14px; font-size: 15px; font-weight: 600; }

.stat .label { color: var(--muted); font-size: 13px; display:flex; align-items:center; gap:8px;}
.stat .value { font-size: 30px; font-weight: 800; margin-top: 8px; letter-spacing:.5px;}
.stat .sub { color: var(--muted); font-size: 12px; margin-top: 4px; }
.stat .value.green { color: var(--green); }
.stat .value.red { color: var(--red); }
.stat .value.accent { color: var(--accent); }

/* Bars list */
.bars { display:flex; flex-direction:column; gap:10px; }
.bar-row { display:grid; grid-template-columns: 1fr auto; gap:8px; align-items:center; font-size:13px;}
.bar-row .name { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.bar-track { grid-column: 1 / -1; height:6px; border-radius:6px; background: rgba(255,255,255,0.06); overflow:hidden; }
.bar-fill { height:100%; border-radius:6px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.bar-fill.red { background: linear-gradient(90deg, var(--red), var(--amber)); }
.count { color: var(--muted); font-variant-numeric: tabular-nums; }

/* Buttons & inputs */
button, .btn {
  font: inherit;
  border: 1px solid var(--border);
  background: var(--panel-solid);
  color: var(--text);
  padding: 9px 15px;
  border-radius: 10px;
  cursor: pointer;
  transition: all .15s ease;
  font-weight: 500;
  font-size: 13.5px;
}
button:hover, .btn:hover { border-color: var(--accent); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border:none; color:white; box-shadow: 0 6px 16px rgba(91,140,255,0.4);}
.btn-danger { color: var(--red); border-color: rgba(255,93,108,0.4); }
.btn-danger:hover{ background: rgba(255,93,108,0.12);}
.btn-sm{ padding:6px 10px; font-size:12.5px;}

input, select, textarea {
  font: inherit;
  background: #0d1320;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
  width: 100%;
  outline: none;
  transition: border .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
label.field { display:block; margin-bottom: 14px; }
label.field span { display:block; font-size:12.5px; color: var(--muted); margin-bottom:6px;}
.row { display:flex; gap:12px; }
.row > * { flex:1; }

/* Toggle */
.switch { position:relative; display:inline-block; width:44px; height:24px; }
.switch input{ display:none; }
.slider { position:absolute; inset:0; background:rgba(255,255,255,0.14); border-radius:24px; transition:.2s; cursor:pointer;}
.slider:before{ content:""; position:absolute; width:18px; height:18px; left:3px; top:3px; background:white; border-radius:50%; transition:.2s;}
.switch input:checked + .slider{ background:linear-gradient(135deg,var(--accent),var(--accent-2)); }
.switch input:checked + .slider:before{ transform:translateX(20px); }

/* Tables */
table { width:100%; border-collapse: collapse; font-size:13px; }
th { text-align:left; color:var(--muted); font-weight:600; padding:10px 12px; border-bottom:1px solid var(--border); position:sticky; top:0; background:var(--panel-solid); }
td { padding:9px 12px; border-bottom:1px solid rgba(255,255,255,0.05); }
tr:hover td { background: rgba(255,255,255,0.02); }
.tag { display:inline-block; padding:3px 9px; border-radius:20px; font-size:11px; font-weight:600;}
.tag.blocked{ background:rgba(255,93,108,0.16); color:var(--red);}
.tag.allowed{ background:rgba(61,220,151,0.14); color:var(--green);}
.tag.local{ background:rgba(91,140,255,0.16); color:var(--accent);}
.tag.offloaded{ background:rgba(255,180,84,0.16); color:var(--amber);}
.mono{ font-family: ui-monospace, "SF Mono", Menlo, monospace; }

.list-item { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:12px 0; border-bottom:1px solid rgba(255,255,255,0.06);}
.list-item:last-child{ border-bottom:none;}
.list-item .meta { color:var(--muted); font-size:12px; }
.pill{ font-size:11px; padding:2px 8px; border-radius:20px; background:var(--panel); border:1px solid var(--border); color:var(--muted);}

.section-title{ font-size:13px; text-transform:uppercase; letter-spacing:1px; color:var(--muted); margin: 26px 0 12px;}
.hidden{ display:none !important; }
.empty{ color:var(--muted); text-align:center; padding:30px; font-size:13px;}
.toast{ position:fixed; bottom:24px; right:24px; background:var(--panel-solid); border:1px solid var(--border); padding:13px 18px; border-radius:12px; box-shadow:var(--shadow); transform:translateY(80px); opacity:0; transition:all .25s; z-index:50;}
.toast.show{ transform:translateY(0); opacity:1;}
.toast.ok{ border-color: rgba(61,220,151,0.5);}
.toast.err{ border-color: rgba(255,93,108,0.5);}

/* login */
.login-overlay{ position:fixed; inset:0; z-index:100; display:grid; place-items:center;
  background: radial-gradient(1000px 600px at 50% -10%, rgba(91,140,255,0.2), transparent 60%), var(--bg); }
.login-box{ width:340px; max-width:90vw; background:var(--panel-solid); border:1px solid var(--border);
  border-radius:18px; padding:34px; box-shadow:var(--shadow); }

/* chart */
.chart{ width:100%; height:160px; display:block;}
.peer-card{ display:flex; align-items:center; justify-content:space-between; padding:14px; border:1px solid var(--border); border-radius:12px; background:var(--panel);}
.records-table td input, .records-table td select{ padding:7px 8px; font-size:12.5px;}
.records-table td{ padding:5px;}