.diagram-dialog {
    width: min(100% - 2rem, 78rem);
}

.diagram-dialog-content,
.subject-view-diagram {
    margin-top: 1rem;
}

.public-diagram {
    position: relative;
    width: 100%;
    min-height: 18rem;
    border: 1px solid var(--line);
    background: #071009;
    overflow: hidden;
}

.public-diagram-help {
    margin: 0 0 0.55rem;
    color: var(--muted);
    font-size: 0.82rem;
}

.public-diagram-controls {
    position: absolute;
    top: 0.7rem;
    right: 0.7rem;
    z-index: 3;
    display: flex;
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--panel) 92%, transparent);
    box-shadow: 0 0.3rem 1rem rgba(0, 0, 0, 0.28);
}

.public-diagram-controls button {
    min-width: 2.5rem;
    min-height: 2.35rem;
    padding: 0.35rem 0.65rem;
    border: 0;
    border-right: 1px solid var(--line);
    color: var(--text);
    background: transparent;
    font: inherit;
    font-weight: 800;
    cursor: pointer;
}

.public-diagram-controls button:nth-child(2) {
    min-width: 4.4rem;
    font-size: 0.76rem;
}

.public-diagram-controls button:last-child {
    border-right: 0;
}

.public-diagram-controls button:hover,
.public-diagram-controls button:focus-visible {
    color: var(--accent);
    background: var(--panel-soft);
}

.public-diagram.is-zoomed .public-diagram-canvas {
    cursor: grab;
    touch-action: none;
}

.public-diagram.is-dragging .public-diagram-canvas {
    cursor: grabbing;
}

.public-diagram-canvas {
    display: block;
    width: 100%;
    height: auto;
    min-height: 18rem;
    max-height: min(72vh, 52rem);
}

.public-diagram-background {
    fill: #071009;
}

.public-diagram-connections line {
    stroke-width: 4;
    vector-effect: non-scaling-stroke;
}

.public-diagram-connections line.is-dashed {
    stroke-dasharray: 14 10;
}

.public-diagram-connection-label {
    paint-order: stroke;
    stroke: #071009;
    stroke-width: 7px;
    fill: var(--text);
    font-size: 16px;
    font-weight: 700;
}

.public-diagram-node-shape {
    fill: color-mix(in srgb, var(--diagram-node-color) 16%, #08110b);
    stroke: var(--diagram-node-color);
    stroke-width: 3;
    vector-effect: non-scaling-stroke;
}

.public-diagram-node.is-interactive {
    cursor: pointer;
}

.public-diagram-node.is-interactive:hover .public-diagram-node-shape,
.public-diagram-node.is-interactive:focus-visible .public-diagram-node-shape {
    filter: brightness(1.35);
    stroke-width: 5;
}

.public-diagram-popover {
    position: absolute;
    z-index: 4;
    width: min(22rem, calc(100% - 1rem));
    padding: 0.9rem 2.5rem 0.9rem 1rem;
    border: 1px solid var(--accent);
    color: var(--text);
    background: #101712;
    box-shadow: 0 0.6rem 1.8rem rgba(0, 0, 0, 0.45);
}

.public-diagram-popover strong {
    display: block;
    margin-bottom: 0.4rem;
}

.public-diagram-popover p {
    margin: 0;
    color: var(--muted);
    line-height: 1.45;
    white-space: pre-wrap;
}

.public-diagram-popover-close {
    position: absolute;
    top: 0.35rem;
    right: 0.45rem;
    width: 1.8rem;
    height: 1.8rem;
    padding: 0;
    border: 0;
    color: var(--text);
    background: transparent;
    font: inherit;
    font-size: 1.25rem;
    cursor: pointer;
}

.public-diagram-popover-close:hover,
.public-diagram-popover-close:focus-visible {
    color: var(--accent);
}

.public-diagram-node--label .public-diagram-node-shape {
    fill: transparent;
    stroke: transparent;
}

.public-diagram-node--gate .public-diagram-node-label,
.public-diagram-node--pc_port .public-diagram-node-label {
    font-size: 11px;
}

.public-diagram-node--gate .public-diagram-node-detail,
.public-diagram-node--pc_port .public-diagram-node-detail {
    font-size: 9px;
}

.public-diagram-node-label {
    fill: var(--text);
    font-family: inherit;
    font-size: 18px;
    font-weight: 800;
    pointer-events: none;
}

.public-diagram-node--label .public-diagram-node-label {
    fill: var(--diagram-node-color);
    font-size: 22px;
}

.public-diagram-node-detail {
    fill: var(--muted);
    font-size: 14px;
    font-weight: 500;
}

.diagram-empty {
    margin: 0;
    padding: 2rem;
    border: 1px solid var(--line);
    color: var(--muted);
    background: var(--panel-soft);
    text-align: center;
}

@media (max-width: 640px) {
    .diagram-dialog {
        width: calc(100% - 1rem);
        padding: 0.75rem;
    }

    .public-diagram,
    .public-diagram-canvas {
        min-height: 12rem;
    }
}