Fix tooltip dark mode styling (#688)

* svg for theme toggle

* feat: add dark mode state management and CSS variables

* feat: add ThemeToggle component with moon/sun icons

* feat: integrate ThemeToggle into sidebar with proper positioning

* style: update component styles for dark mode compatibility

* docs: update changelog with correct repository link

- Fix PR link to point to webpack/webpack-bundle-analyzer
- Add proper GitHub profile attribution @theEquinoxDev
- Follow established changelog format consistency

* fix: apply dark mode styles to tooltip using CSS Modules global selector

* docs: add changelog entry for tooltip dark mode fix

* style: use theme color variables for tooltip dark mode

* Fix changelog entry position

---------

Co-authored-by: Vesa Laakso <482561+valscion@users.noreply.github.com>

Author: theEquinoxDev

CHANGELOG.md

@@ -12,6 +12,10 @@ _Note: Gaps between patch versions are faulty, broken or test releases._
 
 ## UNRELEASED
 
+* **Bug Fix**
+  * Fix tooltip styling in dark mode when using CSS Modules ([#688](https://github.com/webpack/webpack-bundle-analyzer/pull/688) by [@theEquinoxDev](https://github.com/theEquinoxDev))
+
+
 ## 5.1.0
 
 * **Bug Fix**

client/components/Tooltip.css

@@ -15,3 +15,9 @@
   opacity: 0;
   visibility: hidden;
 }
+
+:global(html[data-theme='dark']) .container {
+  background: var(--bg-primary);
+  color: var(--text-primary);
+  border: 1px solid var(--border-color);
+}