:root {
  --app-bg: #f3f6fb;
  --app-card: #ffffff;
  --app-ink: #172033;
  --app-muted: #667085;
  --app-blue: #2454d6;
}

body {
  background: var(--app-bg);
  color: var(--app-ink);
  min-height: 100vh;
}

.app-nav {
  background: linear-gradient(135deg, #111827, #25345c);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.16);
}

.metric-card {
  background: var(--app-card);
  border: 1px solid rgba(23, 32, 51, 0.08);
  border-radius: 18px;
  padding: 18px 20px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  min-height: 118px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.metric-label {
  color: var(--app-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-card strong {
  display: block;
  font-size: 2rem;
  line-height: 1.2;
  margin: 6px 0;
}

.card {
  border: 1px solid rgba(23, 32, 51, 0.08);
  border-radius: 18px;
  overflow: hidden;
}

.card-header {
  background: #fff;
  border-bottom: 1px solid rgba(23, 32, 51, 0.08);
}

.nav-tabs .nav-link {
  color: #45546f;
  font-weight: 600;
}

.nav-tabs .nav-link.active {
  color: var(--app-blue);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}

.status-ok { background: #16a34a; }
.status-warn { background: #f59e0b; }
.status-bad { background: #dc2626; }
.status-muted { background: #94a3b8; }

.actor-card, .task-card {
  border: 1px solid rgba(23, 32, 51, 0.08);
  border-radius: 14px;
  padding: 14px;
  background: #fff;
}

.actor-card.stale {
  opacity: 0.65;
}

.json-box {
  background: #0f172a;
  color: #dbeafe;
  border-radius: 14px;
  padding: 16px;
  max-height: 60vh;
  overflow: auto;
}

.small-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
}

.domain-list {
  margin: 0;
  padding-left: 1rem;
}

.btn-group-sm > .btn {
  --bs-btn-padding-y: .18rem;
  --bs-btn-padding-x: .45rem;
}

@media (max-width: 768px) {
  .metric-card strong { font-size: 1.55rem; }
  .btn-group { flex-wrap: wrap; }
}