From 779fc7463273f29965c8a942f84189700a297f7a Mon Sep 17 00:00:00 2001
From: Kris <kris.aubuchon@discourse.org>
Date: Wed, 18 Dec 2024 09:41:33 -0500
Subject: [PATCH] A11Y: show state change when post anchors are focused
 (#30334)

---
 app/assets/stylesheets/common/base/topic-post.scss | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/app/assets/stylesheets/common/base/topic-post.scss b/app/assets/stylesheets/common/base/topic-post.scss
index dd244d30390..ab359613e94 100644
--- a/app/assets/stylesheets/common/base/topic-post.scss
+++ b/app/assets/stylesheets/common/base/topic-post.scss
@@ -114,6 +114,11 @@
       opacity: 0;
       transition: opacity 0.25s;
 
+      &:focus-visible {
+        outline: 0;
+        opacity: 1;
+      }
+
       &:before {
         content: svg-uri(
           '<svg xmlns="http://www.w3.org/2000/svg" width="16px" height="16px" viewBox="0 0 512 512" fill="#{$primary-medium}"><path d="M326.612 185.391c59.747 59.809 58.927 155.698.36 214.59-.11.12-.24.25-.36.37l-67.2 67.2c-59.27 59.27-155.699 59.262-214.96 0-59.27-59.26-59.27-155.7 0-214.96l37.106-37.106c9.84-9.84 26.786-3.3 27.294 10.606.648 17.722 3.826 35.527 9.69 52.721 1.986 5.822.567 12.262-3.783 16.612l-13.087 13.087c-28.026 28.026-28.905 73.66-1.155 101.96 28.024 28.579 74.086 28.749 102.325.51l67.2-67.19c28.191-28.191 28.073-73.757 0-101.83-3.701-3.694-7.429-6.564-10.341-8.569a16.037 16.037 0 0 1-6.947-12.606c-.396-10.567 3.348-21.456 11.698-29.806l21.054-21.055c5.521-5.521 14.182-6.199 20.584-1.731a152.482 152.482 0 0 1 20.522 17.197zM467.547 44.449c-59.261-59.262-155.69-59.27-214.96 0l-67.2 67.2c-.12.12-.25.25-.36.37-58.566 58.892-59.387 154.781.36 214.59a152.454 152.454 0 0 0 20.521 17.196c6.402 4.468 15.064 3.789 20.584-1.731l21.054-21.055c8.35-8.35 12.094-19.239 11.698-29.806a16.037 16.037 0 0 0-6.947-12.606c-2.912-2.005-6.64-4.875-10.341-8.569-28.073-28.073-28.191-73.639 0-101.83l67.2-67.19c28.239-28.239 74.3-28.069 102.325.51 27.75 28.3 26.872 73.934-1.155 101.96l-13.087 13.087c-4.35 4.35-5.769 10.79-3.783 16.612 5.864 17.194 9.042 34.999 9.69 52.721.509 13.906 17.454 20.446 27.294 10.606l37.106-37.106c59.271-59.259 59.271-155.699.001-214.959z"></path></svg>'
@@ -126,6 +131,13 @@
       }
     }
 
+    // the anchor icon is a CSS pseudo element set above
+    // so we can't change the color of the icon itself
+    // but we can change the color of the anchor text
+    &:has(a.anchor:focus-visible) {
+      color: var(--tertiary);
+    }
+
     // show when hovering where icon should be
     // show when hovering header
     .discourse-no-touch & a.anchor:hover,