/* Vis.js network tooltip styling */
.vis-tooltip {
    position: absolute;
    visibility: hidden;
    padding: 8px 12px;
    font-family: verdana;
    font-size: 14px;
    /* line-height: 1.2; */
    color: #fff;
    background-color: rgba(0, 0, 0, 0.85);
    border-radius: 4px;
    box-shadow: 3px 3px 10px rgba(0, 0, 0, 0.4);
    pointer-events: none;
    z-index: 5000;
    white-space: nowrap;
}

.vis-network .vis-navigation {
    width: 100%;
    height: 100%;
}

.vis-network .vis-navigation .vis-button {
    width: 34px;
    height: 34px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #ccc;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    margin: 4px;
}

.vis-network .vis-navigation .vis-button:hover {
    background: white;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}