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[Repo Assist] css: introduce --surface-background and --surface-border for theming #1161

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[Repo Assist] css: introduce --surface-background and --surface-border for theming #1161

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0a608d8
css: introduce --surface-background and --surface-border variables
github-actions[bot] Apr 10, 2026
ad4ea18
ci: trigger checks
github-actions[bot] Apr 10, 2026
bd38c97
Merge branch 'main' into repo-assist/fix-issue-1156-surface-colors-5a…
nojaf Apr 13, 2026
c107aa8
Merge branch 'main' into repo-assist/fix-issue-1156-surface-colors-5a…
dsyme Apr 13, 2026
d8b57b1
Merge branch 'main' into repo-assist/fix-issue-1156-surface-colors-5a…
dsyme Apr 21, 2026
e5ed887
css: rename --surface-* to --panel-* for clarity
github-actions[bot] Apr 21, 2026
14ed586
css: improve --panel-background/--panel-border comment for clarity
github-actions[bot] Apr 22, 2026
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1 change: 1 addition & 0 deletions RELEASE_NOTES.md
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
* Fix `Markdown.ToLatex` producing invalid LaTeX output for level-6 (and deeper) headings. Previously the LaTeX command was an empty string, resulting in bare `{content}` without a command prefix. Headings at level 6+ are now serialised as `\subparagraph{...}`, which is the deepest sectioning command available in LaTeX.

### Added
* Introduce `--panel-background` and `--panel-border` CSS custom properties in `fsdocs-default.css`. These decouple panel/component colours (copy-code button, blockquotes, sidebar, page menu, dialogs, tooltips, API tables) from `--header-background`/`--header-border`. Both variables default to the header values, so existing themes are unaffected; themes that need a different colour for content panels can now override `--panel-background` and `--panel-border` independently. [#1156](https://github.com/fsprojects/FSharp.Formatting/issues/1156)
* Add tests for `Markdown.ToFsx` (direct serialisation to F# script format), which previously had no unit test coverage.
* Add tests for `Markdown.ToPynb` (direct serialisation to Jupyter notebook format), which previously had no unit test coverage.
* Add round-trip tests for `HardLineBreak` and `HorizontalRule` character preservation in `Markdown.ToMd`.
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32 changes: 18 additions & 14 deletions docs/content/fsdocs-default.css
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Expand Up @@ -63,7 +63,11 @@
--header-background: light-dark(#f9fbfc, #0c1318);
--header-border: light-dark(#e8ecf1, #3a3a42);
--header-link-color: var(--text-color);
--mobile-menu-background: var(--header-background);
/* Panel variables (--panel-background, --panel-border): override to customise menus, dialogs,
blockquotes, copy buttons, and other UI panels independently from the page header. */
--panel-background: var(--header-background);
--panel-border: var(--header-border);
--mobile-menu-background: var(--panel-background);
--menu-color: var(--text-color);
--menu-item-hover-background: light-dark(#eff0f1, #2c2624);
--menu-item-hover-color: var(--menu-color);
Expand All @@ -77,16 +81,16 @@
--scrollbar-thumb-background: #686868;
--shadow-color: hsla(0, 0%, 0%, .1);
--main-shadow-color: hsla(0, 0%, 0%, .025);
--aside-background: var(--header-background);
--blockquote-bacground-color: var(--header-background);
--aside-background: var(--panel-background);
--blockquote-bacground-color: var(--panel-background);
--blockquote-color: var(--text-color);
--on-this-page-color: var(--menu-color);
--page-menu-background-color: var(--header-background);
--page-menu-background-border-color: var(--header-border);
--page-menu-background-color: var(--panel-background);
--page-menu-background-border-color: var(--panel-border);
--page-menu-background-hover-border-color: var(--text-color);
--nav-item-border-color: var(--header-border);
--nav-item-border-color: var(--panel-border);
--nav-item-active-border-color: var(--text-color);
--dialog-background-color: var(--header-background);
--dialog-background-color: var(--panel-background);
--dialog-empty-color: var(--nav-category);
--dialog-icon-color: var(--text-color);
--dialog-link-color: var(--link-color);
Expand Down Expand Up @@ -347,7 +351,7 @@ main {
margin: 0;

& li {
border-left: 1px solid var(--header-border);
border-left: 1px solid var(--panel-border);
margin: 0;

&:hover, &:focus {
Expand Down Expand Up @@ -468,7 +472,7 @@ main {
padding: var(--spacing-300) var(--spacing-500);
background-color: var(--aside-background);
width: var(--main-menu-width);
border-right: 1px solid var(--header-border);
border-right: 1px solid var(--panel-border);
grid-row: var(--main-menu-grid-row);
grid-column: var(--main-menu-grid-column);
overflow-y: auto;
Expand Down Expand Up @@ -731,8 +735,8 @@ pre.has-copy-button {
top: var(--spacing-100);
right: var(--spacing-100);
padding: var(--spacing-50) var(--spacing-100);
background-color: var(--header-background);
border: 1px solid var(--header-border);
background-color: var(--panel-background);
border: 1px solid var(--panel-border);
border-radius: var(--radius);
color: var(--text-color);
cursor: pointer;
Expand Down Expand Up @@ -989,7 +993,7 @@ table.pre, code, pre.fssnip {
div.fsdocs-tip {
background-color: var(--doc-tip-background);
border-radius: var(--radius);
border: 1px solid var(--header-border);
border: 1px solid var(--panel-border);
padding: var(--spacing-200);
font-family: var(--monospace-font);
font-variant-ligatures: none;
Expand Down Expand Up @@ -1070,7 +1074,7 @@ div.fsdocs-tip:popover-open {
}

& tbody td {
border-top: 1px solid var(--header-border);
border-top: 1px solid var(--panel-border);
padding: var(--spacing-300) 0;
}

Expand Down Expand Up @@ -1280,7 +1284,7 @@ dialog {

& li {
margin: 0;
border-bottom: 1px solid var(--header-border);
border-bottom: 1px solid var(--panel-border);

&:hover {
& a, & a iconify-icon {
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