/* Relationship graph (js/relationship-graph.js, Components/RelationshipGraph.razor). */
.rel-graph-host {
    position: relative;
}

.rel-zoom {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.rel-zoom button {
    width: 28px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--mud-palette-lines-default);
    border-radius: var(--mud-default-borderradius);
    background: var(--mud-palette-surface);
    color: var(--mud-palette-text-primary);
    font: inherit;
    line-height: 1;
    cursor: pointer;
}

.rel-zoom button:hover,
.rel-zoom button:focus-visible {
    border-color: var(--mud-palette-primary);
    color: var(--mud-palette-primary);
}

.rel-graph {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 2;
    max-height: 80vh;
    touch-action: none;
    user-select: none;
    cursor: move;
}

.rel-edge {
    stroke: var(--mud-palette-text-secondary);
    stroke-opacity: .45;
    transition: stroke-opacity .15s;
}

.rel-edge.lit {
    stroke: var(--mud-palette-primary);
    stroke-opacity: 1;
}

.rel-count {
    fill: var(--mud-palette-text-primary);
    font-size: 11px;
    font-variant-numeric: tabular-nums;
    paint-order: stroke;
    stroke: var(--mud-palette-background);
    stroke-width: 4px;
    pointer-events: none;
}

.rel-count.lit {
    fill: var(--mud-palette-primary);
    font-weight: 600;
}

.rel-node {
    cursor: grab;
    outline: none;
}

.rel-node.center {
    cursor: default;
}

.rel-node:active {
    cursor: grabbing;
}

.rel-disc {
    fill: var(--mud-palette-surface);
    stroke: var(--mud-palette-lines-default);
    stroke-width: 2;
}

.rel-node.center .rel-disc,
.rel-node.lit .rel-disc,
.rel-node:focus-visible .rel-disc {
    stroke: var(--mud-palette-primary);
}

.rel-node:focus-visible .rel-disc {
    stroke-width: 4;
}

.rel-head {
    image-rendering: pixelated;
}

.rel-label {
    fill: var(--mud-palette-text-primary);
    font-size: 12px;
    paint-order: stroke;
    stroke: var(--mud-palette-background);
    stroke-width: 3px;
}

.rel-graph.dim .rel-node:not(.lit),
.rel-graph.dim .rel-edge:not(.lit),
.rel-graph.dim .rel-count:not(.lit) {
    opacity: .35;
}

@media (prefers-reduced-motion: reduce) {
    .rel-edge {
        transition: none;
    }
}