* { box-sizing: border-box; }
body {
  background: #0f172a;
  color: #e5e7eb;
  font-family: system-ui, sans-serif;
  margin: 0;
  padding: 1rem;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
input, select {
  background: #020617;
  color: #e5e7eb;
  border: 1px solid #334155;
  padding: .5rem;
  margin: .5rem 0;
}
h2 {
  margin-top: 1.5rem;
  border-bottom: 1px solid #334155;
  padding-bottom: .25rem;
}
.card {
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 6px;
  padding: .75rem;
  margin-bottom: .5rem;
}
.card em { color: #94a3b8; }
.card small { color: #94a3b8; }
.badge {
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  margin-left: .5rem;
}
.stable { background: #14532d; }
.building { background: #78350f; }
.planned { background: #1e3a8a; }