/* IGV blue lines & UI custom style (기본 파란색: #3579f6) */
.igv-blue-line {
  background: #3579f6 !important;
  width: 2px !important;
  z-index: 1000;
}
.igv-blue-fill {
  background: rgba(53, 121, 246, 0.18) !important;
  z-index: 999;
}
.igv-control-btn {
  background: #f5faff;
  color: #3579f6;
  border: 1.5px solid #3579f6;
  border-radius: 5px;
  padding: 6px 16px;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.2s, border 0.2s, color 0.2s;
}
.igv-control-btn:hover {
  background: #3579f6;
  color: #fff;
  border: 2px solid #2456a6;
}
.igv-blue-line.selected {
  box-shadow: 0 0 8px #3579f6;
}