fix: Improved contrast for links and yaml highlights in dark mode (#1009)

Author: niallthomson

website/src/css/custom.scss

@@ -45,6 +45,11 @@
   --ifm-navbar-background-color: #000716;
   --ifm-background-color: #0f1b2a;
   --ifm-menu-color: #d1d5db;
+  --ifm-menu-color-active: #ff9900;
+  --ifm-breadcrumb-color-active: #ff9900;
+  --ifm-link-color: #ff9900;
+  --ifm-tabs-color-active: #ff9900;
+  --ifm-tabs-color-active-border: #ff9900;
   --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.3);
 }
 
@@ -79,6 +84,14 @@
   padding: 0 var(--ifm-pre-padding);
 }
 
+[data-theme="dark"] .code-block-highlighted-line-even {
+  background-color: #d1d1d121;
+}
+
+[data-theme="dark"] .code-block-highlighted-line-odd {
+  background-color: #8c949480;
+}
+
 .theme-doc-toc-desktop {
   display: none;
 }
@@ -205,11 +218,6 @@
   color: white;
 }
 
-/* Dark mode specific styles */
-[data-theme="dark"] img {
-  box-shadow: 0 4px 8px rgba(255, 255, 255, 0.1);
-}
-
 [class^="lightToggleIcon"] {
   color: white;
 }