body {
    margin: 0;
}

summary {
    cursor: pointer;
}

input {
    margin-top: 2px;
    margin-bottom: 1px;
}

.book-node {
    stroke: #1a1a1a;
    stroke-width: 0.5px;
}

.book-node:hover {
    stroke: #fff;
    stroke-width: 1.5px;
    opacity: 0.8;
    cursor: crosshair;
}

.tooltip {
    position: absolute;
    padding: 10px;
    background: rgba(0, 0, 0, 0.9);
    color: #fff;
    border: 1px solid #555;
    border-radius: 4px;
    pointer-events: none;
    font-size: 13px;
    max-width: 250px;
    line-height: 1.4;
    z-index: 10;

}

.tooltip a {
    pointer-events: all;
}

.input-wrapper {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 10;
    padding: 5px;
}

.footer {
    position: fixed;
    bottom: 20px;
    left: 10px;
}