.year-bubble {
    position: absolute;
    top: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: #1a73e8;
    color: white;
    padding: 2px 6px;
    border-radius: 6px;
    font-size: 11px;
    white-space: nowrap;
    pointer-events: none;
}
.year-bubble {
    transition: all 0.2s ease;
  }
  #yearRangeSlider {
    margin-top: 16px;
  }
  
  .ui-slider-horizontal {
    height: 6px;
    background: #ddd;
    border: none;
    border-radius: 4px;
  }
  
  .ui-slider-handle {
    top: -0.3em;
    border: 2px solid #1a73e8;
    background: white;
    width: 1.2em;
    height: 1.2em;
    border-radius: 50%;
    cursor: pointer;
  }