/* ---- Graphs tool: Network mode (network.js) ---- */

/* Which view shows what. Grid-only parts are everything that is not marked as
   network or shared, so cards added to the grid later stay grid-only. */
body.tool-page:not(.graphs-network) .net-card,
body.tool-page:not(.graphs-network) .net-container,
body.tool-page:not(.graphs-network) .net-legend,
body.tool-page:not(.graphs-network) .net-stat,
body.tool-page:not(.graphs-network) .net-only {
    display: none !important;
}

body.tool-page.graphs-network .options-sidebar > .option-card:not(.net-card):not(.mode-card),
body.tool-page.graphs-network .canvas-area > .canvas-container:not(.net-container),
body.tool-page.graphs-network .canvas-area > .legend-panel:not(.net-legend),
body.tool-page.graphs-network .stats-bar > .stat-item:not(.net-stat),
body.tool-page.graphs-network #step-level {
    display: none !important;
}

.net-card [hidden] {
    display: none !important;
}

.mode-card .segmented span {
    padding: 8px 10px;
    font-size: 0.85rem;
}

.segmented.segmented-4 {
    grid-template-columns: repeat(4, 1fr);
}

.segmented.segmented-4 span {
    padding-inline: 4px;
}

.net-edit-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 12px;
    margin-top: 12px;
}

.net-edit-row .input-group {
    margin: 0;
}

.net-edit-row input {
    min-width: 0;
    font-family: var(--g-font-mono);
}

/* ---- Stage: the graph and its data panel, filmed as one block ---- */

.net-stage {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 16px;
}

.net-canvas-wrap {
    display: flex;
    justify-content: center;
}

#network-canvas {
    display: block;
    max-width: 100%;
    background: var(--g-canvas);
    border: 1px solid var(--g-rule-strong);
    touch-action: none;
    cursor: grab;
}

#network-canvas[data-tool="node"],
#network-canvas[data-tool="edge"],
#network-canvas[data-tool="delete"] {
    cursor: crosshair;
}

#network-canvas:focus-visible {
    outline: 2px solid var(--g-accent);
    outline-offset: 2px;
}

.net-panel {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--g-rule-strong);
    border-top: 0;
    background: var(--g-panel);
}

.net-panel:empty {
    display: none;
}

.net-row {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    min-height: 54px;
    padding: 8px 14px;
    border-top: 1px solid var(--g-rule);
}

.net-row:first-child {
    border-top: 0;
}

.net-row.muted .net-cells {
    opacity: 0.45;
}

.net-row-label {
    font-family: var(--g-font-mono);
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--g-ink-3);
}

.net-row-note {
    font-family: var(--g-font-mono);
    font-size: 0.72rem;
    color: var(--g-ink-3);
    text-align: right;
    white-space: nowrap;
}

.net-cells {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    min-width: 0;
}

.net-empty {
    font-family: var(--g-font-mono);
    font-size: 0.9rem;
    color: var(--g-ink-3);
}

.net-cell {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    min-height: 36px;
    padding: 4px 9px;
    border: 1px solid var(--g-rule-strong);
    background: var(--g-canvas);
    font-family: var(--g-font-mono);
    color: var(--g-ink);
    transition: background-color 150ms ease, border-color 150ms ease, color 150ms ease;
}

.net-cell b {
    color: inherit; /* beats the site's .dark-mode b */
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.15;
    white-space: nowrap;
}

.net-cell i {
    font-style: normal;
    font-size: 0.66rem;
    line-height: 1.1;
    color: var(--g-ink-3);
}

.net-cell em {
    font-style: normal;
    font-size: 0.68rem;
    line-height: 1.1;
    color: var(--g-ink-3);
}

.net-cell.keyed {
    min-width: 46px;
}

/* Cell tones */
.net-cell.pending {
    color: var(--g-ink-3);
    border-style: dashed;
}

.net-cell.muted {
    color: var(--g-ink-3);
    border-color: var(--g-rule);
}

.net-cell.current {
    background: var(--g-accent);
    border-color: var(--g-accent);
    color: var(--g-on-accent);
}

.net-cell.current i,
.net-cell.current em {
    color: var(--g-on-accent);
}

.net-cell.queued,
.net-cell.new {
    background: color-mix(in srgb, var(--g-accent) 12%, var(--g-canvas));
    border: 2px solid var(--g-accent);
    padding: 3px 8px;
}

.net-cell.changed {
    border: 2px solid var(--g-accent);
    padding: 3px 8px;
    box-shadow: none;
}

.net-cell.changed b {
    color: var(--g-accent);
}

.net-cell.done {
    background: color-mix(in srgb, var(--g-moon) 16%, var(--g-canvas));
    border-color: color-mix(in srgb, var(--g-moon) 60%, var(--g-canvas));
}

.net-cell.zero {
    border: 2px solid var(--g-verdigris);
    padding: 3px 8px;
}

.net-cell.zero b {
    color: var(--g-verdigris);
}

.net-cell.stale {
    border-style: dashed;
    color: var(--g-ink-3);
}

.net-cell.stale b {
    text-decoration: line-through;
    text-decoration-thickness: 2px;
    text-decoration-color: var(--g-rose);
}

.net-cell.stale em {
    color: var(--g-rose);
}

.net-cell.stale.current {
    background: color-mix(in srgb, var(--g-rose) 14%, var(--g-canvas));
    border: 2px solid var(--g-rose);
    color: var(--g-ink);
}

.net-cell.stale.current em {
    color: var(--g-rose);
}

.net-cell.accepted {
    border: 2px solid var(--g-accent);
    padding: 3px 8px;
    background: color-mix(in srgb, var(--g-accent) 12%, var(--g-canvas));
}

.net-cell.accepted.current {
    background: var(--g-accent);
    color: var(--g-on-accent);
}

.net-cell.rejected {
    border-color: var(--g-rose);
    border-style: dashed;
    color: var(--g-rose);
}

.net-cell.rejected b {
    text-decoration: line-through;
    text-decoration-thickness: 2px;
}

.net-cell.rejected.current {
    background: color-mix(in srgb, var(--g-rose) 14%, var(--g-canvas));
    border: 2px solid var(--g-rose);
}

.net-cell.read {
    border: 2px solid var(--g-moon);
    padding: 3px 8px;
    background: color-mix(in srgb, var(--g-moon) 16%, var(--g-canvas));
}

.net-cell.frozen {
    background: var(--g-panel-2);
}

.net-cell.target {
    border-color: var(--g-rose);
}

.net-cell.wrong {
    background: color-mix(in srgb, var(--g-rose) 16%, var(--g-canvas));
    border: 2px solid var(--g-rose);
    padding: 3px 8px;
}

.net-cell.wrong b {
    color: var(--g-rose);
}

.net-cell.wrong::after {
    content: "wrong";
    position: absolute;
    top: -16px;
    right: -4px;
    padding: 0 4px;
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: var(--g-rose);
    color: var(--g-canvas);
}

/* Three-color DFS */
.net-cell.white {
    background: var(--g-canvas);
}

.net-cell.gray {
    background: var(--g-rule-strong);
    border-color: var(--g-rule-strong);
    color: var(--g-ink);
}

.net-cell.black {
    background: var(--g-ink);
    border-color: var(--g-ink);
    color: var(--g-canvas);
}

.net-cell.gray i,
.net-cell.black i {
    color: inherit;
    opacity: 0.75;
}

body.dark-mode .net-cell.white {
    background: var(--g-ink);
    color: var(--g-bg);
}

body.dark-mode .net-cell.white i {
    color: var(--g-bg);
    opacity: 0.75;
}

body.dark-mode .net-cell.black {
    background: var(--g-bg);
    border-color: var(--g-ink-3);
    color: var(--g-ink);
}

/* Two colors (bipartite) and four flower types (greedy) */
.net-cell.c0,
.net-cell.g0 {
    background: var(--g-accent);
    border-color: var(--g-accent);
    color: var(--g-on-accent);
}

.net-cell.c1,
.net-cell.g2 {
    background: var(--g-ember);
    border-color: var(--g-ember);
    color: var(--g-on-accent);
}

.net-cell.g1 {
    background: var(--g-verdigris);
    border-color: var(--g-verdigris);
    color: var(--g-on-accent);
}

.net-cell.g3 {
    background: var(--g-moon);
    border-color: var(--g-moon);
    color: var(--g-on-accent);
}

.net-cell.c0 i, .net-cell.c1 i, .net-cell.g0 i, .net-cell.g1 i, .net-cell.g2 i, .net-cell.g3 i {
    color: inherit;
    opacity: 0.8;
}

.net-cell.c0.changed, .net-cell.c1.changed, .net-cell.g0.changed, .net-cell.g1.changed, .net-cell.g2.changed, .net-cell.g3.changed {
    outline: 2px solid var(--g-ink);
    outline-offset: 2px;
    padding: 4px 9px;
    border-width: 1px;
}

.net-cell.c0.changed b, .net-cell.c1.changed b, .net-cell.g0.changed b, .net-cell.g1.changed b, .net-cell.g2.changed b, .net-cell.g3.changed b {
    color: inherit;
}

/* Directed edge "a > b" inside a cell: a drawn arrow, not a typed glyph. */
.net-arrow {
    display: inline-block;
    width: 14px;
    height: 10px;
    margin: 0 3px;
    vertical-align: 1px;
    background: currentColor;
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 10'%3E%3Cpath d='M0 4h10V0l4 5-4 5V6H0z'/%3E%3C/svg%3E") center / contain no-repeat;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 10'%3E%3Cpath d='M0 4h10V0l4 5-4 5V6H0z'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* Badges row */
.net-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 0;
    padding-block: 10px;
}

.net-badge {
    padding: 4px 10px;
    border: 1px solid var(--g-rule-strong);
    font-family: var(--g-font-mono);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--g-ink-2);
}

.net-badge.accent {
    border-color: var(--g-accent);
    color: var(--g-accent);
}

.net-badge.warn {
    border-color: var(--g-rose);
    color: var(--g-rose);
}

/* Floyd-Warshall matrix */
.net-matrix-row {
    grid-template-columns: 132px auto;
    justify-content: start;
}

.net-matrix {
    margin: 0;
    border-collapse: collapse;
    font-family: var(--g-font-mono);
}

.net-matrix th,
.net-matrix td {
    width: 64px;
    height: 44px;
    border: 1px solid var(--g-rule-strong);
    text-align: center;
    vertical-align: middle;
}

.net-matrix th {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--g-ink-3);
    background: var(--g-panel-2);
}

.net-matrix th.net-corner {
    font-size: 0.66rem;
}

.net-matrix th.k {
    color: var(--g-on-accent);
    background: var(--g-ember);
}

.net-matrix td {
    background: var(--g-canvas);
    color: var(--g-ink);
}

.net-matrix td b {
    color: inherit;
    font-size: 1.05rem;
    font-weight: 600;
}

.net-matrix td s {
    display: block;
    font-size: 0.66rem;
    line-height: 1;
    color: var(--g-ink-3);
}

.net-matrix td.diag {
    color: var(--g-ink-3);
}

.net-matrix td.k {
    background: color-mix(in srgb, var(--g-ember) 12%, var(--g-canvas));
}

.net-matrix td.changed {
    background: var(--g-accent);
    color: var(--g-on-accent);
}

.net-matrix td.changed s {
    color: var(--g-on-accent);
    opacity: 0.75;
}

/* ---- Legend swatches ---- */
.net-swatch {
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    border: 2px solid var(--g-ink-3);
    background: var(--g-canvas);
    border-radius: 50% !important;
}

.net-swatch.node-queued { border-color: var(--g-accent); background: color-mix(in srgb, var(--g-accent) 14%, var(--g-canvas)); }
.net-swatch.node-current { border: 3px double var(--g-ink); }
.net-swatch.node-done { border-color: var(--g-moon); background: color-mix(in srgb, var(--g-moon) 22%, var(--g-canvas)); }
.net-swatch.node-rejected { border-color: var(--g-rose); background: color-mix(in srgb, var(--g-rose) 14%, var(--g-canvas)); }
.net-swatch.node-target { border-color: var(--g-rose); }
.net-swatch.node-white { background: var(--g-canvas); border-color: var(--g-ink-3); }
.net-swatch.node-gray { background: var(--g-rule-strong); border-color: var(--g-rule-strong); }
.net-swatch.node-black { background: var(--g-ink); border-color: var(--g-ink-3); }
body.dark-mode .net-swatch.node-white { background: var(--g-ink); }
body.dark-mode .net-swatch.node-black { background: var(--g-bg); }
.net-swatch.node-k { background: var(--g-ember); border-color: var(--g-ember); }
.net-swatch.node-c0, .net-swatch.node-g0, .net-swatch.node-t0 { background: var(--g-accent); border-color: var(--g-accent); }
.net-swatch.node-c1, .net-swatch.node-g2, .net-swatch.node-t1 { background: var(--g-ember); border-color: var(--g-ember); }
.net-swatch.node-g1 { background: var(--g-verdigris); border-color: var(--g-verdigris); }
.net-swatch.node-g3 { background: var(--g-moon); border-color: var(--g-moon); }

.net-swatch[class*="edge-"] {
    width: 28px;
    height: 0;
    border: 0;
    border-top: 4px solid var(--g-accent);
    border-radius: 0 !important;
    background: none;
}

.net-swatch.edge-used { border-top: 2px dashed var(--g-rule-strong); }
.net-swatch.edge-conflict { border-top-color: var(--g-rose); }
.net-swatch.edge-rejected { border-top: 2px dashed var(--g-rose); }
.net-swatch.edge-checked { border-top-color: var(--g-verdigris); }
.net-swatch.edge-seen { border-top-color: var(--g-ember); }
.net-swatch.edge-candidate { border-top: 2px dashed var(--g-ink-2); }

.net-swatch.tag {
    width: 20px;
    height: 16px;
    border: 1.5px solid var(--g-ink-2);
    border-radius: 0 !important;
}

.net-swatch.outline {
    width: 28px;
    height: 16px;
    border: 0;
    border-radius: 0 !important;
    background: color-mix(in srgb, var(--g-rose) 22%, var(--g-canvas));
}

.net-swatch.cell-changed {
    border-radius: 0 !important;
    border: 0;
    background: var(--g-accent);
}

.net-legend .legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

@media (max-width: 720px) {
    .net-stage {
        padding: 8px;
    }

    .net-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .net-row-note {
        text-align: left;
    }

    .net-matrix th,
    .net-matrix td {
        width: 44px;
        height: 38px;
    }
}

/* Floyd-Warshall: graph on the left, a large matrix on the right. */
.net-stage.split {
    flex-direction: row;
    align-items: stretch;
}

.net-stage.split .net-canvas-wrap {
    flex: 1 1 auto;
    min-width: 0;
}

.net-stage.split .net-panel {
    flex: 0 0 auto;
    align-self: flex-start;
    border-top: 1px solid var(--g-rule-strong);
    border-left: 0;
}

.net-stage.split .net-matrix-row {
    grid-template-columns: 1fr;
    align-content: start;
    min-height: 0;
    gap: 10px;
    padding: 14px 18px 18px;
}

.net-stage.split .net-matrix th,
.net-stage.split .net-matrix td {
    width: 74px;
    height: 62px;
}

.net-stage.split .net-matrix td b {
    font-size: 1.4rem;
}

.net-stage.split .net-matrix td s {
    font-size: 0.8rem;
}

.net-stage.split .net-matrix th {
    font-size: 1rem;
}

.net-matrix th.net-corner {
    white-space: nowrap;
}

@media (max-width: 1100px) {
    .net-stage.split {
        flex-direction: column;
    }

    .net-stage.split .net-panel {
        border-top: 0;
        border-left: 1px solid var(--g-rule-strong);
    }
}

.net-card .net-clear {
    width: 100%;
    margin-top: 10px;
}