Complete rewrite of the dark theme for a modern, consistent, and readable dark mode experience.

Color palette:
- Replace ad-hoc grays (#222/#333/#444) with a cohesive navy-charcoal palette
- Body background: #1a1a2e, Surfaces: #252540/#2d2d4a
- Text: #d4d4e4 (soft white, reduces eye strain vs pure #fff)
- Links: #6cb6ff (distinguishable from body text)
- Borders: #3a3a5c (subtle, consistent)

Syntax highlighting:
- Add complete dark mode token colors for all ~40 syntax classes
- VS Code Dark+ inspired palette
- Previously only 3 of ~40 tokens had dark overrides

Bug fixes:
- Fix table row text color (#333 on dark bg was unreadable)
- Fix links being indistinguishable from body text (all were #fff)
- Fix inline code having light border on dark background
- Fix sidebar search area remaining white in dark mode
- Fix toolbar border remaining light gray
- Fix image inversion being too aggressive (now uses subtle opacity)

New dark mode coverage:
- Modals, admonitions (type-specific accents), homepage elements
- Collapse/toggle bars, tooltips, anchor links, autodoc, footnotes
- Non-QuantEcon project color overrides, toctree caption text

UX improvements:
- Eliminate FOUC with early dark mode injection script
- SVG icons use currentColor instead of forced white
- Images use subtle opacity reduction instead of aggressive inversion
- Stderr warnings updated to match new palette

Complete rewrite of the dark theme for a modern, consistent, and readable dark mode experience.

Color palette:
- Replace ad-hoc grays (#222/#333/#444) with a cohesive navy-charcoal palette
- Body background: #1a1a2e, Surfaces: #252540/#2d2d4a
- Text: #d4d4e4 (soft white, reduces eye strain vs pure #fff)
- Links: #6cb6ff (distinguishable from body text)
- Borders: #3a3a5c (subtle, consistent)

Syntax highlighting:
- Add complete dark mode token colors for all ~40 syntax classes
- VS Code Dark+ inspired palette
- Previously only 3 of ~40 tokens had dark overrides

Bug fixes:
- Fix table row text color (#333 on dark bg was unreadable)
- Fix links being indistinguishable from body text (all were #fff)
- Fix inline code having light border on dark background
- Fix sidebar search area remaining white in dark mode
- Fix toolbar border remaining light gray
- Fix image inversion being too aggressive (now uses subtle opacity)

New dark mode coverage:
- Modals, admonitions (type-specific accents), homepage elements
- Collapse/toggle bars, tooltips, anchor links, autodoc, footnotes
- Non-QuantEcon project color overrides, toctree caption text

UX improvements:
- Eliminate FOUC with early dark mode injection script
- SVG icons use currentColor instead of forced white
- Images use subtle opacity reduction instead of aggressive inversion
- Stderr warnings updated to match new palette

* feat: comprehensive dark theme overhaul

Complete rewrite of the dark theme for a modern, consistent, and readable dark mode experience.

Color palette:
- Replace ad-hoc grays (#222/#333/#444) with a cohesive navy-charcoal palette
- Body background: #1a1a2e, Surfaces: #252540/#2d2d4a
- Text: #d4d4e4 (soft white, reduces eye strain vs pure #fff)
- Links: #6cb6ff (distinguishable from body text)
- Borders: #3a3a5c (subtle, consistent)

Syntax highlighting:
- Add complete dark mode token colors for all ~40 syntax classes
- VS Code Dark+ inspired palette
- Previously only 3 of ~40 tokens had dark overrides

Bug fixes:
- Fix table row text color (#333 on dark bg was unreadable)
- Fix links being indistinguishable from body text (all were #fff)
- Fix inline code having light border on dark background
- Fix sidebar search area remaining white in dark mode
- Fix toolbar border remaining light gray
- Fix image inversion being too aggressive (now uses subtle opacity)

New dark mode coverage:
- Modals, admonitions (type-specific accents), homepage elements
- Collapse/toggle bars, tooltips, anchor links, autodoc, footnotes
- Non-QuantEcon project color overrides, toctree caption text

UX improvements:
- Eliminate FOUC with early dark mode injection script
- SVG icons use currentColor instead of forced white
- Images use subtle opacity reduction instead of aggressive inversion
- Stderr warnings updated to match new palette

* docs: add dark mode documentation and v0.17.1 release updates

* docs: update CHANGELOG with dark theme overhaul changes

* fix: address Copilot review feedback on dark theme PR

- Flatten SCSS nesting to plain CSS in layout.html <style> tag (browsers can't parse SCSS)
- Add missing semicolon in .toctree-wrapper .caption-text rule
- Scope svg g selector to UI icon containers only (.qe-toolbar, .qe-sidebar, .topbar-main, nav) to avoid breaking matplotlib/plotly charts
- Remove duplicate .highlight rules (unreachable :where() block)
- Use strict equality (=== '1') in FOUC prevention script

* UPDATE: Regenerate all visual snapshots (6 files)

* ci: trigger CI and preview build

* refactor: convert dark theme hardcoded colors to CSS custom properties

Declare 16 CSS custom properties on body.dark-theme so downstream
projects can override palette colors without duplicating selectors:

  --qe-dark-bg, --qe-dark-surface, --qe-dark-surface-alt,
  --qe-dark-border, --qe-dark-text, --qe-dark-text-muted,
  --qe-dark-heading, --qe-dark-heading-top, --qe-dark-text-light,
  --qe-dark-link, --qe-dark-link-hover, --qe-dark-link-visited,
  --qe-dark-code-bg, --qe-dark-inline-code, --qe-dark-accent,
  --qe-dark-accent-dark

All ~120 hardcoded palette hex values replaced with var() references.
Semantic colors (admonition accents, modal button text) remain
hardcoded intentionally.

Docs updated with full reference table of available properties.

* fix: double logo in dark theme when dark_logo is configured

The :only-child fallback was matching .logo-img:only-child, but each
<img> is always the sole child of its own <a> wrapper, so it matched
even when a dark logo existed — showing both logos.

Fixed by checking :only-child on the <a> wrapper instead:
  p.logo > a:only-child > .logo-img

When a dark logo IS configured there are two <a> siblings inside
<p class="logo">, so a:only-child won't match and only the dark
logo is shown.

Fixes: double logo issue reported in PR #365

* fix: page header and changelog unreadable in dark theme

The page header (title link, authors, 'Last changed' button) and the
changelog dropdown used colors.$body (#444) which is invisible on
the dark background. Added dark theme overrides for the full
.qe-page__header section:

- Title link → heading-top color
- Authors → primary text
- 'Last changed' button → muted text with accent border
- Changelog dropdown → dark surface background, proper borders
- Commit hash, author, time, message → appropriate text colors

* docs: update CHANGELOG with recent dark theme fixes

Add entries for:
- CSS custom properties refactor (16 overridable --qe-dark-* vars)
- Double logo fix (only-child selector bug)
- Page header/changelog readability fix

* fix: remove extra font-weight on links in dark theme

The dark theme applied font-weight: 600 to .reference links, making
them visually heavier than in light mode. Color alone provides
sufficient contrast on dark backgrounds.

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Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>