html, body, #cesiumContainer {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #000;
}
#ui {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 1000;
  background: rgba(20, 20, 20, 0.9);
  padding: 8px 10px;
  border-radius: 8px;
  color: #f5f5f5;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 520px;
}
#ui-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}
#ui-row label {
  font-size: 11px;
  opacity: 0.7;
}
#latInput, #lonInput {
  width: 90px;
  font-size: 12px;
  padding: 2px 4px;
  border-radius: 4px;
  border: 1px solid #555;
  background: #111;
  color: #f5f5f5;
}
.btn {
  padding: 4px 8px;
  font-size: 11px;
  border-radius: 4px;
  border: 1px solid #555;
  background: #222;
  color: #eee;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: #333; }
.btn.active {
  background: #0b6;
  border-color: #0f8;
  color: #000;
  font-weight: 600;
}
.btn.expanded {
  background: #2a2a2a;
  border-color: #666;
}
.btn-toggle {
  padding: 3px 7px;
  border-radius: 999px;
}
.btn-toggle.on {
  background: #ffdd00;
  color: #000;
  border-color: #ffe666;
  font-weight: 600;
}
.subbar {
  display: none;
  padding-left: 58px; /* lines up after "Basemap:" label */
  gap: 6px;
}
.subbar .label {
  font-size: 11px;
  opacity: 0.7;
  margin-right: 2px;
}
#dogamiSlopeAlpha {
  width: 160px;
}
#status {
  font-size: 11px;
  opacity: 0.7;
}