:root {
    --cheryl-syntax-keyword: #b4233c;
    --cheryl-syntax-type: #805500;
    --cheryl-syntax-definition: #2a6b38;
    --cheryl-syntax-call: #006c72;
    --cheryl-syntax-parameter: #5b6572;
    --cheryl-syntax-local: #1856a1;
    --cheryl-syntax-member: #a33367;
    --cheryl-syntax-constant: #985100;
    --cheryl-syntax-string: #7e4e16;
    --cheryl-syntax-comment: #5d6b7b;
    --cheryl-syntax-annotation: #7746a2;
}

/* Token roles stay consistent between the generated light and dark palettes. */
.highlight :is(.c, .ch, .cm, .cpf, .c1, .cs, .go, .w) {
    color: var(--cheryl-syntax-comment);
}

.highlight :is(.k, .kc, .kd, .kn, .kp, .kr, .kt, .nt, .ow) {
    color: var(--cheryl-syntax-keyword);
    font-weight: 500;
}

.highlight :is(.cp, .nd) {
    color: var(--cheryl-syntax-annotation);
}

.highlight :is(.m, .mb, .mf, .mh, .mi, .mo, .il, .no) {
    color: var(--cheryl-syntax-constant);
}

.highlight :is(.s, .sa, .sb, .sc, .dl, .sd, .s1, .s2, .sh, .sx, .ss, .se, .si, .sr) {
    color: var(--cheryl-syntax-string);
}

.highlight :is(.nc, .nn) {
    color: var(--cheryl-syntax-type);
    font-weight: 500;
}

.highlight :is(.nf, .fm) {
    color: var(--cheryl-syntax-definition);
}

.highlight :is(.nb, .bp, .nf-Call) {
    color: var(--cheryl-syntax-call);
}

.highlight :is(.nv, .vg, .vm) {
    color: var(--cheryl-syntax-local);
}

.highlight :is(.vi, .vc) {
    color: var(--cheryl-syntax-member);
}

.highlight .nv-Parameter {
    color: var(--cheryl-syntax-parameter);
}

/* Give inline names a quiet surface and readable light-theme contrast. */
.rst-content :is(code.literal, tt.literal) {
    border-color: #d8dee6;
    background: #f2f4f7;
    color: inherit;
}

.rst-content a :is(code.literal, tt.literal) {
    color: #1c5a88;
}

.rst-content a:visited :is(code.literal, tt.literal) {
    color: #684594;
}

/* Keep the appearance control available above the page on desktop and mobile. */
.cheryl-appearance {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.cheryl-appearance[hidden] {
    display: none;
}

.cheryl-appearance label {
    margin: 0;
    color: inherit;
    font-size: inherit;
}

.cheryl-appearance select {
    width: auto;
    min-height: 2.25rem;
    margin: 0;
    padding: 0.25rem 0.5rem;
    border: 1px solid #788594;
    border-radius: 0.2rem;
    background: #fff;
    color: #253346;
    font: inherit;
}

.cheryl-appearance select:focus-visible {
    outline: 2px solid #216aa0;
    outline-offset: 3px;
}

@media screen {
    html[data-theme="light"] {
        color-scheme: light;
    }

    html[data-theme="dark"] {
        color-scheme: dark;
        --cheryl-background: #151b23;
        --cheryl-surface: #1c2531;
        --cheryl-surface-raised: #253246;
        --cheryl-code-background: #101720;
        --cheryl-text: #e1e8f0;
        --cheryl-muted: #adbacb;
        --cheryl-border: #526174;
        --cheryl-link: #8ecaff;
        --cheryl-link-hover: #c3e3ff;
        --cheryl-visited: #d0b2ff;
        --cheryl-focus: #ffda82;
        --cheryl-mark: #594a22;
        --cheryl-syntax-keyword: #ff8899;
        --cheryl-syntax-type: #eed28c;
        --cheryl-syntax-definition: #a6d98a;
        --cheryl-syntax-call: #76d7ca;
        --cheryl-syntax-parameter: #b3bfcd;
        --cheryl-syntax-local: #91baff;
        --cheryl-syntax-member: #f0a1c2;
        --cheryl-syntax-constant: #ffb875;
        --cheryl-syntax-string: #cad99a;
        --cheryl-syntax-comment: #a5afbf;
        --cheryl-syntax-annotation: #c8acff;
        scrollbar-color: var(--cheryl-border) var(--cheryl-background);
    }

    html[data-theme="dark"] body,
    html[data-theme="dark"] .wy-nav-content-wrap {
        background: var(--cheryl-background);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .wy-nav-content {
        background: var(--cheryl-background);
    }

    html[data-theme="dark"] a {
        color: var(--cheryl-link);
    }

    html[data-theme="dark"] a:visited {
        color: var(--cheryl-visited);
    }

    html[data-theme="dark"] a:hover {
        color: var(--cheryl-link-hover);
    }

    html[data-theme="dark"] :is(a, button, input, select, textarea):focus-visible {
        outline: 2px solid var(--cheryl-focus);
        outline-offset: 3px;
    }

    html[data-theme="dark"] hr {
        border-color: var(--cheryl-border);
    }

    html[data-theme="dark"] footer,
    html[data-theme="dark"] .cheryl-revision,
    html[data-theme="dark"] #search-results .context,
    html[data-theme="dark"] .rst-content :is(.footnote, .footnote-list, .citation, .citation-list) {
        color: var(--cheryl-muted);
    }

    html[data-theme="dark"] .wy-nav-side,
    html[data-theme="dark"] .wy-side-nav-search,
    html[data-theme="dark"] .wy-nav-top {
        background: var(--cheryl-code-background);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .wy-side-nav-search > a,
    html[data-theme="dark"] .wy-nav-top a,
    html[data-theme="dark"] .wy-menu-vertical a,
    html[data-theme="dark"] .wy-menu-vertical a:visited {
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .wy-menu-vertical :is(header, p.caption) {
        color: var(--cheryl-link);
    }

    /* RTD assigns separate light surfaces at each expanded navigation level. */
    html[data-theme="dark"] .wy-menu-vertical li.current,
    html[data-theme="dark"] .wy-menu-vertical li.current > a,
    html[data-theme="dark"] .wy-menu-vertical li.current li > a,
    html[data-theme="dark"] .wy-menu-vertical li.on > a {
        border-color: var(--cheryl-border);
        background: var(--cheryl-surface) !important;
        color: var(--cheryl-text) !important;
    }

    html[data-theme="dark"] .wy-menu-vertical a:hover,
    html[data-theme="dark"] .wy-menu-vertical li.current a:hover,
    html[data-theme="dark"] .wy-menu-vertical li.on a:hover {
        background: var(--cheryl-surface-raised) !important;
        color: var(--cheryl-link-hover) !important;
    }

    html[data-theme="dark"] .wy-menu-vertical li button.toctree-expand {
        color: var(--cheryl-muted) !important;
    }

    html[data-theme="dark"] .wy-menu-vertical li button.toctree-expand:hover {
        color: var(--cheryl-text) !important;
    }

    html[data-theme="dark"] .wy-menu-vertical :is(code, tt) {
        border: none;
        background: inherit;
        color: inherit;
    }

    html[data-theme="dark"] .rst-versions,
    html[data-theme="dark"] .rst-versions .rst-current-version {
        background: var(--cheryl-code-background);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .rst-versions .rst-other-versions {
        color: var(--cheryl-muted);
    }

    html[data-theme="dark"] :is(input[type="text"], input[type="search"], textarea, select),
    html[data-theme="dark"] .cheryl-appearance select {
        border-color: var(--cheryl-border);
        background: var(--cheryl-surface);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] input::placeholder,
    html[data-theme="dark"] textarea::placeholder {
        color: var(--cheryl-muted);
        opacity: 1;
    }

    html[data-theme="dark"] .wy-side-nav-search input[type="text"] {
        border-color: var(--cheryl-border);
    }

    html[data-theme="dark"] .btn-neutral,
    html[data-theme="dark"] .btn-neutral:visited {
        border-color: var(--cheryl-border);
        background: var(--cheryl-surface) !important;
        color: var(--cheryl-text) !important;
    }

    html[data-theme="dark"] .btn-neutral:hover {
        background: var(--cheryl-surface-raised) !important;
        color: var(--cheryl-link-hover) !important;
    }

    html[data-theme="dark"] .rst-content :is(table.docutils, table.field-list, .wy-table),
    html[data-theme="dark"] .rst-content :is(table.docutils, table.field-list, .wy-table) :is(th, td) {
        border-color: var(--cheryl-border);
    }

    html[data-theme="dark"] .rst-content :is(table.docutils, table.field-list, .wy-table) :is(caption, thead) {
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .rst-content table.docutils:not(.field-list) tr:nth-child(2n-1) td,
    html[data-theme="dark"] .wy-table-backed,
    html[data-theme="dark"] .wy-table-odd td,
    html[data-theme="dark"] .wy-table-striped tr:nth-child(2n-1) td {
        background: var(--cheryl-surface);
    }

    html[data-theme="dark"] .rst-content :is(code, tt),
    html[data-theme="dark"] code {
        border-color: var(--cheryl-border);
        background: var(--cheryl-surface);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .rst-content :is(code.literal, tt.literal) {
        color: inherit;
    }

    html[data-theme="dark"] .rst-content a :is(code, tt) {
        color: var(--cheryl-link);
    }

    html[data-theme="dark"] .rst-content a:visited :is(code.literal, tt.literal) {
        color: var(--cheryl-visited);
    }

    html[data-theme="dark"] .rst-content :is(.guilabel, .menuselection, kbd, .kbd) {
        border-color: var(--cheryl-border) !important;
        background: var(--cheryl-surface) !important;
        color: var(--cheryl-text) !important;
        box-shadow: none !important;
    }

    /* The upstream signature selectors have unusually high specificity. */
    html[data-theme="dark"] .rst-content dl.cpp > dt {
        border-color: var(--cheryl-link) !important;
        background: var(--cheryl-surface-raised) !important;
        color: var(--cheryl-text) !important;
    }

    html[data-theme="dark"] .rst-content dl.cpp dl.cpp > dt {
        border-color: var(--cheryl-border) !important;
        background: var(--cheryl-surface) !important;
    }

    html[data-theme="dark"] .rst-content dl.cpp :is(.sig-name, .descname, .descclassname, .optional) {
        color: var(--cheryl-text) !important;
    }

    html[data-theme="dark"] .rst-content dl.cpp dt :is(.headerlink, a),
    html[data-theme="dark"] .rst-content .toc-backref {
        color: var(--cheryl-link) !important;
    }

    html[data-theme="dark"] .rst-content dl.cpp > dt::before {
        color: var(--cheryl-link) !important;
    }

    html[data-theme="dark"] .rst-content :is(.viewcode-back, .viewcode-link) {
        color: #94d9ad;
    }

    html[data-theme="dark"] .rst-content .sidebar {
        border-color: var(--cheryl-border);
        background: var(--cheryl-surface);
    }

    html[data-theme="dark"] .rst-content .sidebar .sidebar-title {
        background: var(--cheryl-surface-raised);
    }

    html[data-theme="dark"] .rst-content :is(.admonition, .admonition-todo, .attention, .caution, .danger, .error, .hint, .important, .note, .seealso, .tip, .warning),
    html[data-theme="dark"] .wy-alert {
        background: #1d3142;
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .rst-content .admonition-title,
    html[data-theme="dark"] .wy-alert-title {
        background: #31516d;
        color: #f2f6fb;
    }

    html[data-theme="dark"] .rst-content :is(.note, .seealso, .wy-alert-info) {
        background: #1d3142;
    }

    html[data-theme="dark"] .rst-content :is(.note, .seealso, .wy-alert-info) .admonition-title {
        background: #31516d;
    }

    html[data-theme="dark"] .rst-content :is(.admonition-todo, .attention, .caution, .warning, .wy-alert-warning) {
        background: #3b2e1e;
    }

    html[data-theme="dark"] .rst-content :is(.admonition-todo, .attention, .caution, .warning, .wy-alert-warning) .admonition-title {
        background: #69502d;
    }

    html[data-theme="dark"] .rst-content :is(.danger, .error, .wy-alert-danger) {
        background: #40272c;
    }

    html[data-theme="dark"] .rst-content :is(.danger, .error, .wy-alert-danger) .admonition-title {
        background: #733d46;
    }

    html[data-theme="dark"] .rst-content :is(.hint, .important, .tip, .wy-alert-success) {
        background: #1d372e;
    }

    html[data-theme="dark"] .rst-content :is(.hint, .important, .tip, .wy-alert-success) .admonition-title {
        background: #315c4b;
    }

    html[data-theme="dark"] .rst-content .wy-alert-neutral {
        background: var(--cheryl-surface);
    }

    html[data-theme="dark"] .rst-content .wy-alert-neutral .admonition-title {
        background: var(--cheryl-surface-raised);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .rst-content .admonition :is(th, td) {
        border-color: var(--cheryl-border) !important;
    }

    html[data-theme="dark"] #file-hierarchy ul ul > li::before,
    html[data-theme="dark"] #file-hierarchy ul ul > li::after {
        border-color: var(--cheryl-border);
    }

    html[data-theme="dark"] :is(mark, .highlighted),
    html[data-theme="dark"] .rst-content .highlighted {
        background: var(--cheryl-mark);
        color: var(--cheryl-text);
        box-shadow: 0 0 0 2px var(--cheryl-mark);
    }

    html[data-theme="dark"] .rst-content :is(dt:target, .footnote:target),
    html[data-theme="dark"] .viewcode-block:target {
        background-color: var(--cheryl-mark) !important;
    }

    html[data-theme="dark"] .rst-content .linenodiv pre,
    html[data-theme="dark"] .rst-content div[class^="highlight"],
    html[data-theme="dark"] .rst-content div[class^="highlight"] pre,
    html[data-theme="dark"] .rst-content pre.literal-block,
    html[data-theme="dark"] .highlight {
        border-color: var(--cheryl-border);
        background: var(--cheryl-code-background);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .rst-content .code-block-caption {
        color: var(--cheryl-muted);
    }

    html[data-theme="dark"] .highlight .hll,
    html[data-theme="dark"] :is(td.linenos, span.linenos) .special,
    html[data-theme="dark"] span.linenos.special {
        background: var(--cheryl-mark);
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] :is(td.linenos pre, span.linenos) {
        color: var(--cheryl-muted);
    }

    html[data-theme="dark"] .highlight :is(.na, .nl, .gh, .gp, .gu, .gt) {
        color: #8ecaff;
    }

    html[data-theme="dark"] .highlight :is(.ni, .o) {
        color: var(--cheryl-text);
    }

    html[data-theme="dark"] .highlight :is(.gd, .gr, .ne) {
        color: #ffaaaa;
    }

    html[data-theme="dark"] .highlight .gi {
        color: #a9dca1;
    }

    html[data-theme="dark"] .highlight .err {
        border-color: #ffaaaa;
        color: #ffaaaa;
    }
}

@media print {
    .cheryl-appearance {
        display: none;
    }
}