.tree-tooltip {
    position: absolute;
    pointer-events: none;
    background-color: rgba(44, 62, 80, 0.95);
    color: #ffffff;
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.2s;
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(166, 24, 22, 0.3);
}