:root {
  --bg: #0b0f15;
  --grid: #151c26;
  --panel: #111821;
  --panel2: #161f2b;
  --chip: #19222e;
  --border: #253042;
  --text: #e6edf3;
  --muted: #8d9aab;
  --faint: #5d6a7c;
  --link: #79c0ff;
  --uisp: #2ec4b6;
  --warn: #f5d76e;
  --down: #ff7b72;
  --ok: #3ecf8e;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text);
  font-family: "Fira Sans", Inter, "DejaVu Sans", system-ui, sans-serif; }
body { display: flex; flex-direction: column; min-height: 100%;
  background-image: radial-gradient(circle, #151c26 1.2px, transparent 1.2px);
  background-size: 24px 24px; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
.top { display: flex; justify-content: space-between; align-items: center;
  padding: 16px 28px; border-bottom: 1px solid var(--border); background: rgba(11,15,21,.92);
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(8px); }
.top-left, .top-right { display: flex; align-items: center; gap: 16px; }
.brand { font-weight: 700; letter-spacing: -0.02em; font-size: 15px; color: var(--muted); }
.tiny { font-size: 12px; }
.muted { color: var(--muted); }
.hidden { display: none !important; }
.ghost { background: transparent; border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 7px 12px; }
.ghost:hover { border-color: var(--link); color: var(--link); }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.down { background: var(--down); }

.picker { padding: 36px 40px 80px; display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }
.site-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 22px 22px 18px; cursor: pointer; text-align: left; width: 100%;
  transition: border-color .15s, transform .15s; }
.site-card:hover { border-color: var(--link); transform: translateY(-1px); }
.site-card h2 { margin: 0 0 8px; font-size: 22px; letter-spacing: -0.03em; }
.counts { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 8px; }
.chip { background: var(--chip); border: 1px solid var(--border); border-radius: 999px;
  padding: 3px 10px; font-size: 12px; color: var(--muted); }
.chip.down { color: var(--down); border-color: #5a2a28; }
.chip.warn { color: var(--warn); border-color: #5a4d20; }
.chip.uisp { color: var(--uisp); border-color: #1c4e48; }
.stamp { font-size: 12px; color: var(--faint); }

.site-view { flex: 1; display: flex; min-height: 0; }
.diagram-wrap { flex: 1; overflow: auto; min-width: 0; }
.diagram { min-height: 100%; }
.diagram svg { display: block; max-width: none; height: auto; }
.diagram svg .device-card, .diagram svg .client-card { cursor: pointer; }
.diagram svg .device-card:hover path { filter: brightness(1.15); }

.panel { width: 400px; max-width: 42vw; background: var(--panel); border-left: 1px solid var(--border);
  display: flex; flex-direction: column; max-height: calc(100vh - 70px); }
.panel-head { display: flex; justify-content: space-between; align-items: center;
  padding: 16px 18px; border-bottom: 1px solid var(--border); }
.panel-head h2 { margin: 0; font-size: 16px; }
.panel-body { padding: 16px 18px 32px; overflow: auto; }
.kv { display: grid; grid-template-columns: 110px 1fr; gap: 6px 10px; font-size: 13px; margin-bottom: 16px; }
.kv dt { color: var(--faint); }
.kv dd { margin: 0; font-family: "Fira Code", "IBM Plex Mono", ui-monospace, monospace; font-size: 12px; }
.status { font-weight: 600; }
.status.online { color: var(--ok); }
.status.offline { color: var(--down); }
.status.upgrading { color: var(--warn); }
.status.isolated { color: #f0a36b; }
.list { list-style: none; padding: 0; margin: 0 0 16px; }
.list li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.q { background: var(--panel2); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; margin-bottom: 12px; }
.q p { margin: 0 0 8px; font-size: 14px; }
.q .cands { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.q form { display: flex; flex-wrap: wrap; gap: 6px; }
.q input, .q select { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px; }
.q button { background: var(--link); color: #0b0f15; border: 0; border-radius: 8px; padding: 6px 12px; font-weight: 600; }
.event { font-size: 13px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.event .when { color: var(--faint); font-size: 11px; }
.empty { color: var(--faint); font-size: 13px; }

.login-body { display: grid; place-items: center; }
.login-card { width: min(400px, 92vw); background: var(--panel); border: 1px solid var(--border);
  border-radius: 18px; padding: 28px; }
.login-card h1 { margin: 8px 0 6px; letter-spacing: -0.03em; }
.login-card label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 0; }
.login-card input { width: 100%; margin-top: 6px; background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 12px; }
.login-card button[type=submit] { margin-top: 18px; width: 100%; background: var(--link); color: #0b0f15;
  border: 0; border-radius: 10px; padding: 10px; font-weight: 700; }
.error { color: var(--down); font-size: 13px; }

@media (max-width: 860px) {
  .panel { position: fixed; right: 0; top: 70px; bottom: 0; max-width: 100vw; width: 100%; z-index: 15; }
}