/*
 * Styling for the <details> elements built by collapsible_code.js.
 *
 * Lives in docs/_static_custom rather than docs/_static, which is erased and
 * repopulated from the zenodo archive at build time.
 */

:root {
    --collapsible-code-border: #e1e4e5;
    --collapsible-code-bg: #f3f6f6;
    --collapsible-code-bg-hover: #e8eced;
    --collapsible-code-fg: #404040;
    --collapsible-code-accent: #2980b9;
}

@media (prefers-color-scheme: dark) {
    :root {
        --collapsible-code-border: #45494c;
        --collapsible-code-bg: #2b2f31;
        --collapsible-code-bg-hover: #34393b;
        --collapsible-code-fg: #d0d0d0;
        --collapsible-code-accent: #6ab0de;
    }
}

details.collapsible-code {
    margin-bottom: 24px;
}

details.collapsible-code > summary {
    display: block;             /* hides the native triangle in most browsers */
    cursor: pointer;
    padding: 4px 12px 4px 26px;
    position: relative;
    border: 1px solid var(--collapsible-code-border);
    border-radius: 3px;
    background-color: var(--collapsible-code-bg);
    color: var(--collapsible-code-fg);
    font-size: 90%;
    line-height: 1.6;
    user-select: none;
}

/* and hides it in webkit, which ignores display on the summary itself */
details.collapsible-code > summary::-webkit-details-marker {
    display: none;
}

details.collapsible-code > summary:hover {
    background-color: var(--collapsible-code-bg-hover);
}

details.collapsible-code > summary:focus-visible {
    outline: 2px solid var(--collapsible-code-accent);
    outline-offset: 1px;
}

/* our own caret, so that it looks the same in every browser */
details.collapsible-code > summary::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 50%;
    width: 0;
    height: 0;
    border-top: 4px solid transparent;
    border-bottom: 4px solid transparent;
    border-left: 5px solid var(--collapsible-code-accent);
    transform: translateY(-50%);
    transition: transform 0.15s ease;
}

details.collapsible-code[open] > summary::before {
    transform: translateY(-50%) rotate(90deg);
}

details.collapsible-code[open] > summary {
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
    margin-bottom: 0;
}

/* the code block sits flush under its summary */
details.collapsible-code[open] > summary + * {
    margin-top: 0;
}

/* a folded block must never hide content from a printed page; the unfolding
   itself is done from javascript, browsers no longer let css override it */
@media print {
    details.collapsible-code > summary {
        display: none;
    }
}