:root {
  --bg: #f4f1ea;
  --fg: #2b2b2b;
  --muted: #888;
  --border: #d9d2c2;
  --accent: #2b2b2b;
  --error: #b03030;
  --warn: #a07020;
  --ok: #2e7d32;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); font-family: system-ui, sans-serif; }
header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); }
header h1 { margin: 0; font-size: 1.25rem; font-weight: 600; }

.hidden { display: none !important; }

.fatal {
  margin: 1rem 1.5rem;
  padding: 1rem;
  border: 2px solid var(--error);
  background: #fff5f5;
  color: var(--error);
  font-family: ui-monospace, monospace;
  white-space: pre-wrap;
}

#layout {
  display: grid;
  grid-template-columns: minmax(280px, 30%) 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
}

#controls .field { margin-bottom: 1.25rem; }
#controls label { display: block; font-size: 0.9rem; margin-bottom: 0.25rem; }
#controls input[type="text"], #controls input[type="number"], #controls select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  background: #fff;
  font-size: 0.95rem;
}
#controls .row { display: flex; gap: 0.5rem; }
#controls .row input[type="text"] { flex: 1; }
#controls fieldset { border: 1px solid var(--border); padding: 0.5rem 0.75rem; }
#controls fieldset legend { font-size: 0.85rem; padding: 0 0.25rem; }
#controls fieldset label { display: block; margin: 0.25rem 0; }

button {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
}
button:disabled { opacity: 0.4; cursor: not-allowed; }

#generate-btn { width: 100%; padding: 0.75rem; font-weight: 600; }

.status { font-size: 0.85rem; margin-top: 0.25rem; min-height: 1.1em; }
.status.error { color: var(--error); }
.status.warn { color: var(--warn); }
.status.ok { color: var(--ok); }

#preview { display: flex; flex-direction: column; gap: 1rem; align-items: center; }
#map-svg {
  width: 100%;
  max-width: 800px;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--border);
  background: #fff;
}