html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, sans-serif;
}
#app {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: 100%;
}
#sidebar {
  padding: 16px;
  border-right: 1px solid #ddd;
  overflow-y: auto;
  background: #fff;
}
#map {
  width: 100%;
  height: 100%;
}
h1 {
  font-size: 1.25rem;
  margin: 0 0 8px;
}
.sub {
  margin-top: 0;
  color: #555;
  line-height: 1.35;
}
label {
  display: block;
  font-weight: 600;
  margin: 14px 0 6px;
}
select, input[type="range"], button {
  width: 100%;
  box-sizing: border-box;
}
button {
  margin-top: 12px;
  padding: 8px 10px;
  border: 1px solid #bbb;
  background: #f7f7f7;
  cursor: pointer;
}
.legend, #summary {
  margin-top: 16px;
  padding: 12px;
  background: #f7f7f7;
  border-radius: 8px;
}
.maplibregl-popup-content {
  max-width: 360px;
}
.popup-title {
  font-weight: 700;
  margin-bottom: 8px;
}
.popup-list {
  margin: 0;
  padding-left: 18px;
}
.popup-list li {
  margin-bottom: 3px;
}
.small {
  color: #666;
  font-size: 0.9rem;
}