From ba0d4c397ea2ea9015f0e0e42330def3b93d06af Mon Sep 17 00:00:00 2001
From: Vinta Chen <vinta.chen@gmail.com>
Date: Sun, 25 Oct 2026 21:55:24 +0800
Subject: [PATCH] fix: keep the hidden back-to-top button out of the tab order

The hidden back-to-top button was only transparent, so Tab still stopped on it and its focus outline was invisible.

Co-Authored-By: Claude <noreply@anthropic.com>
---
 website/static/style.css | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/website/static/style.css b/website/static/style.css
index 59ffb190..3ea73f16 100644
--- a/website/static/style.css
+++ b/website/static/style.css
@@ -1269,14 +1269,18 @@ th[data-sort].sort-asc::after {
   letter-spacing: 0.03em;
   cursor: pointer;
   opacity: 0;
+  /* Keeps the hidden button out of the tab order; stays visible for the whole fade */
+  visibility: hidden;
   pointer-events: none;
   transition:
     opacity 180ms ease,
+    visibility 180ms ease,
     color 180ms ease;
 }
 
 .back-to-top.visible {
   opacity: 1;
+  visibility: visible;
   pointer-events: auto;
 }