fix: handle emphasis color on citation et al. text outside links (#378)

fix: handle emphasis color on citation et al. text outside links

Author: mmcky

src/quantecon_book_theme/assets/styles/_base.scss

@@ -156,7 +156,8 @@ em {
 
 // Reset emphasis styling inside citation reference links
 // Prevents "et al." in references from inheriting emphasis color
-a.reference em {
+a.reference em,
+span:has(> a.reference) > em {
   font-style: normal;
   font-weight: inherit;
   color: inherit;

src/quantecon_book_theme/assets/styles/_color-schemes.scss

@@ -25,7 +25,8 @@ body.color-scheme-gruvbox {
   }
 
   // Reset emphasis styling inside citation reference links (gruvbox)
-  a.reference em {
+  a.reference em,
+  span:has(> a.reference) > em {
     color: inherit;
     font-weight: inherit;
   }
@@ -51,7 +52,8 @@ body.color-scheme-gruvbox {
     }
 
     // Reset emphasis styling inside citation reference links (gruvbox dark)
-    a.reference em {
+    a.reference em,
+    span:has(> a.reference) > em {
       color: inherit;
     }
 

src/quantecon_book_theme/assets/styles/_dark-theme.scss

@@ -154,7 +154,8 @@ body.dark-theme {
   }
 
   // Reset emphasis styling inside citation reference links (dark mode)
-  a.reference em {
+  a.reference em,
+  span:has(> a.reference) > em {
     color: inherit;
   }