:root {
  --bg: #0f1419;
  --panel: #171d26;
  --panel2: #1e2630;
  --line: #2a3340;
  --fg: #d8dee9;
  --muted: #8a97a8;
  --accent: #4aa3df;
  --accent-d: #2f7fbf;
  --ok: #3fb950;
  --warn: #d29922;
  --danger: #e5534b;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 14px/1.5 ui-sans-serif, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

.topbar {
  display: flex; align-items: center; gap: 20px;
  padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 600; font-size: 16px; }
.topbar nav { display: flex; align-items: center; gap: 18px; }
.topbar .node { margin-left: auto; }

main { max-width: 920px; margin: 24px auto; padding: 0 20px; }
h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 15px; margin: 0 0 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: 18px 20px; margin-bottom: 18px;
}
.card.narrow { max-width: 360px; margin: 60px auto; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }

dl { display: grid; grid-template-columns: 130px 1fr; gap: 6px 12px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; }

label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
label.checkbox { flex-direction: row; align-items: center; gap: 6px; }
input, select {
  background: var(--panel2); border: 1px solid var(--line); color: var(--fg);
  border-radius: 6px; padding: 8px 10px; font: inherit;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
form.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
form.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
form.grid2 .span2, form.narrow { grid-column: 1 / -1; }
form .primary { align-self: flex-end; }

button {
  font: inherit; cursor: pointer; border-radius: 6px; padding: 8px 14px;
  border: 1px solid var(--line); background: var(--panel2); color: var(--fg);
}
button.primary { background: var(--accent-d); border-color: var(--accent-d); color: #fff; font-weight: 500; }
button.primary:hover { background: var(--accent); }
button.link { background: none; border: none; padding: 0; color: var(--accent); }
button.link.danger { color: var(--danger); }
form.inline { display: inline; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 500; font-size: 12px; }
.ralign { text-align: right; }
.actions a, .actions form { margin-left: 10px; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; border: 1px solid var(--line); }
.badge.online { color: var(--ok); border-color: #1e3a24; }
.badge.idle { color: var(--accent); }
.badge.inactive, .badge.never-connected { color: var(--muted); }

.flash, .error { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.flash { background: #15291b; border: 1px solid #245c30; color: #9fe0ab; }
.error { background: #2a1718; border: 1px solid #5c2422; color: #f0a8a3; }

code { background: var(--panel2); padding: 1px 5px; border-radius: 4px; }
footer { max-width: 920px; margin: 30px auto; padding: 0 20px; font-size: 12px; }