.tooltip-content {
    position: absolute;
    background: white;
    border: 1px solid #ccc;
    padding: 8px;
    border-radius: 4px;
    max-width: 240px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    display: none;
    z-index: 1000;
  }