/* Lore Graph page — canvas stage, legend, inspector panel.
 *
 * mdBook: :root 62.5% then body { font-size: 1.6rem } (~16px). Control sizing
 * follows the same rem conventions as browse.css and related.css.
 *
 * The node palette is three categorical hues plus a neutral. Only three hues
 * clear the all-pairs colour-vision separation floor, and a force layout can put
 * any two nodes side by side, so the remaining kinds share the neutral and are
 * named by the legend text instead. The two hue sets below are each stepped for
 * their own surface — the dark set is a selection, not an automatic flip.
 *
 * --lg-surface tracks --bg so the ring around overlapping nodes and the halo
 * behind labels match whichever of mdBook's five themes is active.
 */

.lore-graph {
    /* Light surfaces: mdBook `light` and `rust`. */
    --lg-story: #2a78d6;
    --lg-character: #eb6834;
    --lg-place: #1baf7a;
    --lg-set: #a4409e;
    --lg-other: #6f6d67;
    --lg-link: rgba(11, 11, 11, 0.16);
    --lg-link-active: rgba(11, 11, 11, 0.55);
    /* Printings, dashed. Stronger than a story line despite carrying less
       weight in the archive, because a dash puts less ink on the canvas than
       a solid stroke of the same colour and would otherwise disappear. */
    --lg-link-print: rgba(11, 11, 11, 0.34);
    --lg-dim: rgba(11, 11, 11, 0.09);
    --lg-label: #0b0b0b;
    --lg-accent: #0b0b0b;
    --lg-surface: var(--bg);

    margin: 1.5rem 0;
}

/* Dark surfaces: mdBook `coal`, `navy` and `ayu`. */
.coal .lore-graph,
.navy .lore-graph,
.ayu .lore-graph {
    --lg-story: #3987e5;
    --lg-character: #d95926;
    --lg-place: #199e70;
    --lg-set: #b45fb0;
    --lg-other: #8f8d85;
    --lg-link: rgba(255, 255, 255, 0.14);
    --lg-link-active: rgba(255, 255, 255, 0.5);
    --lg-link-print: rgba(255, 255, 255, 0.32);
    --lg-dim: rgba(255, 255, 255, 0.08);
    --lg-label: #ffffff;
    --lg-accent: #ffffff;
}

/*
 * Backlink appended by mdbook_graph_link.py to every page that is a node.
 * Lives outside .lore-graph, so it defines nothing from that scope.
 */
.lore-graph-backlink {
    margin: -0.5rem 0 2rem;
    font-size: 1.35rem;
}

.lore-graph-backlink a::before {
    content: "◎ ";
    opacity: 0.6;
}

/* --- Controls --------------------------------------------------------- */

.lore-graph-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.lore-graph-search {
    position: relative;
    margin-bottom: 0.6rem;
}

.lore-graph-input {
    width: 100%;
    padding: 0.5rem 0.7rem;
    font: inherit;
    font-size: 1.4rem;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--table-border-color);
    border-radius: 4px;
}

.lore-graph-dropdown {
    position: absolute;
    z-index: 30;
    top: calc(100% + 2px);
    left: 0;
    right: 0;
    max-height: 20rem;
    margin: 0;
    padding: 0.25rem 0;
    overflow-y: auto;
    list-style: none;
    background: var(--bg);
    border: 1px solid var(--table-border-color);
    border-radius: 4px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
}

.lore-graph-dropdown li {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.7rem;
    font-size: 1.35rem;
    cursor: pointer;
}

.lore-graph-dropdown li:hover {
    background: var(--quote-bg);
}

.lore-graph-degree {
    display: flex;
    flex: none;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.35rem;
    white-space: nowrap;
    color: var(--fg);
}

.lore-graph-degree input[type="range"] {
    width: 9rem;
}

.lore-graph-degree output {
    min-width: 1.4rem;
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.lore-graph-reset {
    padding: 0.45rem 0.9rem;
    font: inherit;
    font-size: 1.35rem;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--table-border-color);
    border-radius: 4px;
    cursor: pointer;
}

.lore-graph-reset:hover {
    background: var(--quote-bg);
}

/* --- Legend ----------------------------------------------------------- */

.lore-graph-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

.lore-graph-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.7rem;
    font: inherit;
    font-size: 1.25rem;
    color: var(--fg);
    background: var(--bg);
    border: 1px solid var(--table-border-color);
    border-radius: 999px;
    opacity: 0.45;
    cursor: pointer;
}

.lore-graph-chip.is-on {
    opacity: 1;
}

.lore-graph-chip-count {
    font-variant-numeric: tabular-nums;
    opacity: 0.65;
}

.lore-graph-dot {
    display: inline-block;
    flex: none;
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 50%;
}

/*
 * Heroes and regions draw as stars on the canvas — the legend swatch has to be
 * the same star, since the legend is where that is learned. Enlarged for the
 * same reason the canvas star is: a star of a given radius carries far less ink
 * than a circle of it.
 */
.lore-graph-dot-star {
    width: 1.3rem;
    height: 1.3rem;
    border-radius: 0;
    clip-path: polygon(
        50% 0%,
        61% 35%,
        98% 35%,
        68% 57%,
        79% 91%,
        50% 70%,
        21% 91%,
        32% 57%,
        2% 35%,
        39% 35%
    );
}

.lore-graph-dot-story {
    background: var(--lg-story);
}
.lore-graph-dot-character {
    background: var(--lg-character);
}
.lore-graph-dot-place {
    background: var(--lg-place);
}
.lore-graph-dot-set {
    background: var(--lg-set);
}
.lore-graph-dot-other {
    background: var(--lg-other);
}

/* --- Stage ------------------------------------------------------------ */

/*
 * Break out of mdBook's ~750px prose column. At a fitted zoom the nodes are
 * drawn at a constant size on screen, so stretching the *layout* is invisible —
 * fitToView simply zooms back out. Visible whitespace between nodes therefore
 * comes from exactly two things: stage area and mark size. This reclaims the
 * third of the window the prose column was leaving empty.
 *
 * --lg-gutter reserves the previous/next chapter chevrons, which mdBook parks
 * against both edges of the page area. The canvas takes pointer events, so
 * running underneath them does not just look wrong — it eats their clicks.
 */
@media (min-width: 1000px) {
    .lore-graph {
        /* mdBook sets :root to 62.5%, so 1rem is 10px here: 24rem is 240px
           total, i.e. 120px each side against 90px-wide chevrons. */
        --lg-gutter: 24rem;

        position: relative;
        left: 50%;
        width: min(1400px, calc(100vw - var(--lg-gutter)));
        transform: translateX(-50%);
    }

    html.sidebar-visible .lore-graph {
        width: min(1400px, calc(100vw - var(--sidebar-width, 300px) - var(--lg-gutter)));
    }
}

.lore-graph-stage {
    position: relative;
    height: min(78vh, 860px);
    min-height: 44rem;
    overflow: hidden;
    border: 1px solid var(--table-border-color);
    border-radius: 4px;
}

.lore-graph-canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
    touch-action: none;
}

/*
 * The node/connection tally is kept for screen readers but taken off the canvas
 * — sighted readers can see how much is on screen, and the caption competed with
 * the graph for attention. This is the standard visually-hidden clip, not
 * `display: none`, which would drop it from the accessibility tree too.
 */
.lore-graph-status {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
    border: 0;
}

/*
 * Shown when the filters leave nothing to draw. Centred in the stage rather
 * than painted on the canvas, so it is selectable text that tracks the theme
 * and reaches a screen reader.
 */
.lore-graph-empty {
    position: absolute;
    top: 50%;
    left: 50%;
    max-width: 42rem;
    margin: 0;
    padding: 0 1.5rem;
    font-size: 1.4rem;
    line-height: 1.5;
    text-align: center;
    text-wrap: balance;
    opacity: 0.75;
    transform: translate(-50%, -50%);
}

/* --- Inspector panel -------------------------------------------------- */

.lore-graph-panel {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: min(26rem, calc(100% - 1.5rem));
    max-height: calc(100% - 1.5rem);
    padding: 0.9rem 1rem;
    overflow-y: auto;
    background: var(--bg);
    border: 1px solid var(--table-border-color);
    border-radius: 4px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/*
 * Absolute, not floated. A floated button is out of flow, so the block that
 * follows it lays its own box underneath and swallows the clicks — the × looked
 * right and did nothing.
 */
.lore-graph-panel-close {
    position: absolute;
    z-index: 2;
    top: 0.4rem;
    right: 0.5rem;
    width: 2.6rem;
    height: 2.6rem;
    padding: 0;
    font: inherit;
    font-size: 1.9rem;
    line-height: 1;
    color: var(--fg);
    background: none;
    border: none;
    border-radius: 4px;
    opacity: 0.6;
    cursor: pointer;
}

.lore-graph-panel-close:hover {
    background: var(--quote-bg);
}

/*
 * Steps back one node of the walk; the × beside it leaves the walk altogether.
 * Same absolute placement as the ×, and for the same reason — see above — just
 * parked one button-width inboard of it.
 */
.lore-graph-panel-back {
    position: absolute;
    z-index: 2;
    top: 0.4rem;
    right: 3.3rem;
    width: 2.6rem;
    height: 2.6rem;
    padding: 0;
    font: inherit;
    font-size: 1.7rem;
    line-height: 1;
    color: var(--fg);
    background: none;
    border: none;
    border-radius: 4px;
    opacity: 0.6;
    cursor: pointer;
}

.lore-graph-panel-back:hover:not(:disabled) {
    background: var(--quote-bg);
}

/* Spent, not missing: a deep link opens with nothing of ours behind it, and an
   arrow that quietly turned into "leave the site" would be worse than a dead
   one. Keeping it placed also stops the title reflowing partway through a walk. */
.lore-graph-panel-back:disabled {
    opacity: 0.2;
    cursor: default;
}

.lore-graph-panel-kind {
    margin: 0;
    /* Clears both controls. */
    padding-right: 6.2rem;
    font-size: 1.15rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    opacity: 0.6;
}

.lore-graph-panel-title {
    margin: 0.15rem 0 0.35rem;
    padding-right: 6.2rem;
    font-size: 1.7rem;
    line-height: 1.2;
}

.lore-graph-panel-count {
    margin: 0 0 0.6rem;
    font-size: 1.25rem;
    opacity: 0.7;
}

.lore-graph-panel-hint {
    font-size: 1.1rem;
    font-style: italic;
    opacity: 0.8;
}

.lore-graph-panel-group {
    display: flex;
    gap: 0.5rem;
    align-items: baseline;
    margin: 0.9rem 0 0.25rem;
    padding-bottom: 0.2rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--table-border-color);
    opacity: 0.75;
}

.lore-graph-panel-group:first-of-type {
    margin-top: 0.4rem;
}

.lore-graph-panel-group-count {
    margin-left: auto;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0;
    opacity: 0.8;
}

.lore-graph-panel-more {
    font-size: 1.2rem;
    opacity: 0.6;
}

/*
 * Printings. The rule under this heading is dashed to echo the stroke these
 * rows have on the canvas, which is the only thing saying that this section
 * and the Set section above it mean different things.
 */
.lore-graph-panel-group-printed {
    border-bottom-style: dashed;
}

/*
 * These rows carry no trailing number: a printing is not part of the degree
 * every other number in this panel is measured in, and borrowing the set's
 * story count would read as if it were. Nothing is then pushing the focus
 * button out to the margin, so it does it itself.
 */
.lore-graph-panel-printed .lore-graph-focus {
    margin-left: auto;
}

.lore-graph-panel-list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.lore-graph-panel-list li {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    padding: 0.22rem 0;
    font-size: 1.3rem;
    line-height: 1.35;
}

/*
 * Re-roots the panel on that connection instead of leaving for its page. Kept
 * as a separate control so the name link keeps its one job.
 */
.lore-graph-focus {
    display: inline-flex;
    flex: none;
    align-items: center;
    justify-content: center;
    width: 2.2rem;
    height: 2.2rem;
    padding: 0;
    color: var(--fg);
    background: none;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0.45;
}

.lore-graph-panel-list li:hover .lore-graph-focus {
    opacity: 0.85;
}

.lore-graph-focus:hover,
.lore-graph-focus:focus-visible {
    background: var(--quote-bg);
    border-color: var(--table-border-color);
    opacity: 1;
}

.lore-graph-panel-list .lore-graph-dot {
    position: relative;
    top: 0.1rem;
    width: 0.8rem;
    height: 0.8rem;
}

.lore-graph-panel-list .lore-graph-dot-star {
    top: 0.2rem;
    width: 1.2rem;
    height: 1.2rem;
    margin: 0 -0.2rem;
}

/* The trailing number is each neighbour's own connection count — the key the
   rows inside a section are sorted by, shown so the order is legible. */
.lore-graph-panel-sub {
    margin-left: auto;
    padding-left: 0.5rem;
    font-size: 1.15rem;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
    opacity: 0.5;
}

.lore-graph-hint {
    margin: 0.6rem 0 0;
    font-size: 1.25rem;
    opacity: 0.7;
}

/* --- The narrow-viewport list ----------------------------------------- */

/*
 * Below the canvas breakpoint the stage is replaced by a ranked list. The
 * breakpoint itself is not written here: theme/graph.js owns it, because the
 * simulation has to know the mode too, and puts `is-list-mode` on the container.
 * Everything below keys off that class, so the two cannot drift apart.
 *
 * The list borrows the inspector panel's markup for its detail view, so the
 * .lore-graph-panel-* rules above dress it — bar the two controls, which are
 * sized for a mouse and are re-sized for a thumb at the end of this block.
 */

.lore-graph-list {
    /* .lore-graph-panel-close is absolute and needs this to hang from. */
    position: relative;
    border: 1px solid var(--table-border-color);
    border-radius: 4px;
}

.lore-graph-hint-list,
.lore-graph.is-list-mode .lore-graph-hint-graph {
    display: none;
}

.lore-graph.is-list-mode .lore-graph-hint-list {
    display: block;
}

/*
 * Spread and Reset view are viewport controls. A list has no viewport to spread
 * or reset, so they say nothing here. Minimum connections and the legend both
 * still filter what the list ranks, and stay.
 */
.lore-graph.is-list-mode .lore-graph-spread,
.lore-graph.is-list-mode .lore-graph-reset {
    display: none;
}

.lore-graph-list-count {
    margin: 0;
    padding: 0.7rem 0.9rem;
    font-size: 1.15rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--table-border-color);
    opacity: 0.6;
}

.lore-graph-list-empty {
    margin: 0;
    padding: 1.6rem 1.2rem;
    font-size: 1.35rem;
    text-align: center;
    opacity: 0.7;
}

.lore-graph-list-rows {
    margin: 0;
    padding: 0;
    list-style: none;
}

.lore-graph-list-row {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    width: 100%;
    /* 44px. The measured failure this whole mode exists to fix is a ~19px tap
       target, so the row cannot be allowed to shrink under the minimum. */
    min-height: 4.4rem;
    padding: 0.5rem 0.9rem;
    font: inherit;
    font-size: 1.4rem;
    text-align: left;
    color: var(--fg);
    background: none;
    border: 0;
    border-bottom: 1px solid var(--table-border-color);
    cursor: pointer;
}

.lore-graph-list-rows li:last-child .lore-graph-list-row {
    border-bottom: 0;
}

.lore-graph-list-row:hover,
.lore-graph-list-row:focus-visible {
    background: var(--quote-bg);
}

/* min-width: 0 is what lets the name ellipsis instead of forcing the row wide. */
.lore-graph-list-text {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    min-width: 0;
}

.lore-graph-list-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lore-graph-list-sub {
    font-size: 1.15rem;
    opacity: 0.55;
}

/* The rank key, shown so the order is legible — same reason the panel shows it. */
.lore-graph-list-degree {
    flex: none;
    min-width: 2.4rem;
    font-size: 1.25rem;
    font-variant-numeric: tabular-nums;
    text-align: right;
    opacity: 0.6;
}

.lore-graph-list-more {
    display: block;
    width: 100%;
    min-height: 4.4rem;
    padding: 0.8rem;
    font: inherit;
    font-size: 1.35rem;
    color: var(--fg);
    background: none;
    border: 0;
    border-top: 1px solid var(--table-border-color);
    cursor: pointer;
}

.lore-graph-list-more:hover {
    background: var(--quote-bg);
}

/*
 * Every control is sized for a mouse pointer above the breakpoint. None of them
 * are below it, and this mode exists precisely because a 19px target is not
 * hittable — so shrinking the canvas away while leaving the controls that filter
 * it at 23px would only move the fault, not fix it.
 */
.lore-graph.is-list-mode .lore-graph-panel-close,
.lore-graph.is-list-mode .lore-graph-panel-back,
.lore-graph.is-list-mode .lore-graph-focus {
    width: 4.4rem;
    height: 4.4rem;
}

/* Parked one 4.4rem button plus its gutter inboard of the ×. */
.lore-graph.is-list-mode .lore-graph-panel-back {
    right: 5.1rem;
}

.lore-graph.is-list-mode .lore-graph-input {
    min-height: 4.4rem;
}

.lore-graph.is-list-mode .lore-graph-chip {
    min-height: 4.4rem;
    padding: 0.3rem 1.1rem;
}

/* A range input needs an explicit height; min-height leaves the thumb where it
   was, which is the part a thumb actually has to catch. */
.lore-graph.is-list-mode .lore-graph-degree input[type="range"] {
    height: 4.4rem;
    width: 100%;
}

/* Freed by dropping Spread and Reset — the slider gets the row to itself. */
.lore-graph.is-list-mode .lore-graph-degree {
    flex: 1 1 100%;
}

/* The panel's rows are 1.35 line-height on a hover-revealed button; on a phone
   the row is a tap target and the focus button is always visible. */
.lore-graph.is-list-mode .lore-graph-panel-list li {
    align-items: center;
    padding: 0.35rem 0;
}

.lore-graph.is-list-mode .lore-graph-focus {
    opacity: 0.75;
}

.lore-graph-list .lore-graph-panel-kind,
.lore-graph-list .lore-graph-panel-title,
.lore-graph-list .lore-graph-panel-count,
.lore-graph-list .lore-graph-panel-group,
.lore-graph-list .lore-graph-panel-list,
.lore-graph-list .lore-graph-panel-more {
    margin-left: 0.9rem;
    margin-right: 0.9rem;
}

/* Both controls again, at the larger tap-target size. */
.lore-graph-list .lore-graph-panel-kind {
    margin-top: 0.9rem;
    padding-right: 10rem;
}

.lore-graph-list .lore-graph-panel-title {
    padding-right: 10rem;
}

.lore-graph-list .lore-graph-panel-list:last-child {
    margin-bottom: 1rem;
}

@media (max-width: 700px) {
    .lore-graph-stage {
        height: min(60vh, 560px);
    }

    .lore-graph-panel {
        top: auto;
        bottom: 0.5rem;
        left: 0.5rem;
        right: 0.5rem;
        width: auto;
        max-height: 55%;
    }
}