From 656e5002a7b22c026ba791dbc4c05b9e4fe2f093 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 16 Jun 2026 22:42:39 +0000
Subject: [PATCH 1/2] feat(ux): improve accessibility of drilldown navigation

- Converted breadcrumb container to `<nav aria-label="Breadcrumb">`.
- Added `aria-current="step"` for active breadcrumb items.
- Added `aria-live="polite"` and `aria-atomic="true"` to dynamic level counter.
- Implemented `focus-visible:ring-2` focus rings for keyboard navigation.
- explicitly hid decorative chevron icons from screen readers using `aria-hidden="true"`.

Co-authored-by: aarjava <218419324+aarjava@users.noreply.github.com>
---
 .Jules/palette.md                             |  3 +++
 .../drilldown/drilldown-navigation.tsx        | 22 +++++++++++--------
 2 files changed, 16 insertions(+), 9 deletions(-)
 create mode 100644 .Jules/palette.md

diff --git a/.Jules/palette.md b/.Jules/palette.md
new file mode 100644
index 00000000..517293b1
--- /dev/null
+++ b/.Jules/palette.md
@@ -0,0 +1,3 @@
+## 2024-06-16 - [Keyboard Nav for Drilldown Component]
+**Learning:** Added aria-current='step', <nav aria-label='Breadcrumb'> wrappers, aria-live='polite' dynamic counters, and focus-visible:ring-2 to drilldown-navigation to vastly improve keyboard accessibility and screen reader support without changing visual behavior.
+**Action:** Always wrap progressive disclosure step indicators in a semantic <nav> and explicitly hide decorative icons.
diff --git a/src/components/drilldown/drilldown-navigation.tsx b/src/components/drilldown/drilldown-navigation.tsx
index 9489f7f8..267bc059 100644
--- a/src/components/drilldown/drilldown-navigation.tsx
+++ b/src/components/drilldown/drilldown-navigation.tsx
@@ -56,7 +56,10 @@ export function DrilldownNavigation({
   return (
     <div className={clsx('flex flex-col', className)}>
       {/* Navigation Breadcrumb */}
-      <div className="flex items-center gap-2 mb-4 text-sm text-neutral-400">
+      <nav
+        aria-label="Breadcrumb"
+        className="flex items-center gap-2 mb-4 text-sm text-neutral-400"
+      >
         {levels.map((level, idx) => (
           <div key={level.id} className="flex items-center gap-2">
             <button
@@ -64,17 +67,18 @@ export function DrilldownNavigation({
                 setCurrentLevel(idx)
                 onLevelChange?.(level.id)
               }}
+              aria-current={idx === currentLevel ? 'step' : undefined}
               className={clsx(
-                'hover:text-neutral-200 transition-colors',
+                'rounded-sm focus-visible:ring-2 focus-visible:ring-indigo-400 focus:outline-none hover:text-neutral-200 transition-colors',
                 idx === currentLevel && 'text-neutral-200 font-medium'
               )}
             >
               {level.title}
             </button>
-            {idx < levels.length - 1 && <ChevronRight className="size-4" />}
+            {idx < levels.length - 1 && <ChevronRight className="size-4" aria-hidden="true" />}
           </div>
         ))}
-      </div>
+      </nav>
 
       {/* Current Level Content */}
       <div className="flex-1">{current.content}</div>
@@ -85,18 +89,18 @@ export function DrilldownNavigation({
           onClick={handleBack}
           disabled={currentLevel === 0}
           className={clsx(
-            'flex items-center gap-2 px-4 py-2 rounded-md text-sm font-medium transition-opacity',
+            'flex items-center gap-2 px-4 py-2 text-sm font-medium transition-opacity rounded-sm focus-visible:ring-2 focus-visible:ring-indigo-400 focus:outline-none',
             'hover:opacity-80',
             currentLevel === 0
               ? 'opacity-50 cursor-not-allowed text-neutral-500'
               : 'text-neutral-300'
           )}
         >
-          <ChevronLeft className="size-4" />
+          <ChevronLeft className="size-4" aria-hidden="true" />
           Back
         </button>
 
-        <div className="text-xs text-neutral-500">
+        <div className="text-xs text-neutral-500" aria-live="polite" aria-atomic="true">
           Level {currentLevel + 1} of {levels.length}
         </div>
 
@@ -104,7 +108,7 @@ export function DrilldownNavigation({
           onClick={handleNext}
           disabled={currentLevel === levels.length - 1}
           className={clsx(
-            'flex items-center gap-2 px-4 py-2 rounded-md text-sm font-medium transition-opacity',
+            'flex items-center gap-2 px-4 py-2 text-sm font-medium transition-opacity rounded-sm focus-visible:ring-2 focus-visible:ring-indigo-400 focus:outline-none',
             'hover:opacity-80',
             currentLevel === levels.length - 1
               ? 'opacity-50 cursor-not-allowed text-neutral-500'
@@ -112,7 +116,7 @@ export function DrilldownNavigation({
           )}
         >
           Next
-          <ChevronRight className="size-4" />
+          <ChevronRight className="size-4" aria-hidden="true" />
         </button>
       </div>
     </div>

From 59e8ae62b59805165b68b5720d581799bbe271e0 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 16 Jun 2026 22:45:59 +0000
Subject: [PATCH 2/2] feat(ux): improve accessibility of drilldown navigation

- Converted breadcrumb container to `<nav aria-label="Breadcrumb">`.
- Added `aria-current="step"` for active breadcrumb items.
- Added `aria-live="polite"` and `aria-atomic="true"` to dynamic level counter.
- Implemented `focus-visible:ring-2` focus rings for keyboard navigation.
- explicitly hid decorative chevron icons from screen readers using `aria-hidden="true"`.

Co-authored-by: aarjava <218419324+aarjava@users.noreply.github.com>