diff --git a/src/components/frontend/notifications/NotificationsBell.tsx b/src/components/frontend/notifications/NotificationsBell.tsx
index 353bb62..f3330f4 100644
--- a/src/components/frontend/notifications/NotificationsBell.tsx
+++ b/src/components/frontend/notifications/NotificationsBell.tsx
@@ -49,6 +49,8 @@ export function NotificationsBell() {
   const [open, setOpen] = useState(false);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState(false);
+  const [actionError, setActionError] = useState<string | null>(null);
+  const [marking, setMarking] = useState(false);
   const intervalRef = useRef<ReturnType<typeof setInterval> | null>(null);
 
   const unreadCount = notifications.filter((n) => !n.read).length;
@@ -78,9 +80,24 @@ export function NotificationsBell() {
   }, [fetchNotifications]);
 
   async function handleItemClick(item: NotificationItem) {
+    if (marking) return;
     if (!item.read) {
-      await markNotificationsRead([item.id]);
-      setNotifications((prev) => prev.map((n) => (n.id === item.id ? { ...n, read: true } : n)));
+      setMarking(true);
+      setActionError(null);
+      try {
+        const result = await markNotificationsRead([item.id]);
+        if (result.success) {
+          setNotifications((prev) =>
+            prev.map((n) => (n.id === item.id ? { ...n, read: true } : n)),
+          );
+        } else {
+          setActionError(result.error ?? "Failed to update notifications.");
+        }
+      } catch (err) {
+        setActionError(err instanceof Error ? err.message : "Failed to update notifications.");
+      } finally {
+        setMarking(false);
+      }
     }
     if (item.link) {
       router.push(item.link);
@@ -89,9 +106,21 @@ export function NotificationsBell() {
   }
 
   async function handleMarkAll() {
-    if (unreadCount === 0) return;
-    await markAllNotificationsRead();
-    setNotifications((prev) => prev.map((n) => (n.read ? n : { ...n, read: true })));
+    if (unreadCount === 0 || marking) return;
+    setMarking(true);
+    setActionError(null);
+    try {
+      const result = await markAllNotificationsRead();
+      if (result.success) {
+        setNotifications((prev) => prev.map((n) => (n.read ? n : { ...n, read: true })));
+      } else {
+        setActionError(result.error ?? "Failed to update notifications.");
+      }
+    } catch (err) {
+      setActionError(err instanceof Error ? err.message : "Failed to update notifications.");
+    } finally {
+      setMarking(false);
+    }
   }
 
   return (
@@ -104,6 +133,11 @@ export function NotificationsBell() {
               {unreadCount > 9 ? "9+" : unreadCount}
             </span>
           )}
+          <span aria-live="polite" className="sr-only">
+            {unreadCount > 0
+              ? `${unreadCount} unread notification${unreadCount === 1 ? "" : "s"}`
+              : "No unread notifications"}
+          </span>
         </Button>
       </DropdownMenuTrigger>
       <DropdownMenuContent align="end" className="w-80 sm:w-96">
@@ -112,9 +146,11 @@ export function NotificationsBell() {
           {unreadCount > 0 && (
             <button
               onClick={() => void handleMarkAll()}
-              className="text-xs text-muted-foreground hover:text-foreground"
+              disabled={marking}
+              aria-label="Mark all notifications as read"
+              className="text-xs text-muted-foreground hover:text-foreground disabled:cursor-not-allowed disabled:opacity-50"
             >
-              Mark all read
+              {marking ? "Marking..." : "Mark all read"}
             </button>
           )}
         </div>
@@ -131,34 +167,44 @@ export function NotificationsBell() {
               No notifications yet.
             </p>
           ) : (
-            notifications.map((item) => (
-              <DropdownMenuItem
-                key={item.id}
-                className={cn(
-                  "flex flex-col items-start gap-1 py-2.5",
-                  !item.read && "bg-accent/50",
-                )}
-                onClick={() => void handleItemClick(item)}
-              >
-                <span className="flex w-full items-center justify-between gap-2">
-                  <span className="text-sm font-medium">
-                    {!item.read && (
-                      <span className="mr-1.5 inline-block size-1.5 rounded-full bg-blue-500 align-middle" />
-                    )}
-                    {item.title}
+            <>
+              {actionError && (
+                <p role="alert" className="px-3 pb-2 pt-1 text-xs text-red-400">
+                  {actionError}
+                </p>
+              )}
+              {notifications.map((item) => (
+                <DropdownMenuItem
+                  key={item.id}
+                  className={cn(
+                    "flex flex-col items-start gap-1 py-2.5",
+                    !item.read && "bg-accent/50",
+                  )}
+                  disabled={marking}
+                  onClick={() => void handleItemClick(item)}
+                >
+                  <span className="flex w-full items-center justify-between gap-2">
+                    <span className="min-w-0 truncate text-sm font-medium">
+                      {!item.read && (
+                        <span className="mr-1.5 inline-block size-1.5 rounded-full bg-blue-500 align-middle" />
+                      )}
+                      {item.title}
+                    </span>
+                    <span className="shrink-0 text-[10px] text-muted-foreground">
+                      {timeAgo(item.createdAt)}
+                    </span>
                   </span>
-                  <span className="shrink-0 text-[10px] text-muted-foreground">
-                    {timeAgo(item.createdAt)}
+                  {item.message && (
+                    <span className="line-clamp-3 w-full text-xs text-muted-foreground">
+                      {item.message}
+                    </span>
+                  )}
+                  <span className="text-[10px] text-muted-foreground/70">
+                    {notificationLabel(item.type)}
                   </span>
-                </span>
-                {item.message && (
-                  <span className="w-full text-xs text-muted-foreground">{item.message}</span>
-                )}
-                <span className="text-[10px] text-muted-foreground/70">
-                  {notificationLabel(item.type)}
-                </span>
-              </DropdownMenuItem>
-            ))
+                </DropdownMenuItem>
+              ))}
+            </>
           )}
         </div>
         <DropdownMenuSeparator />
diff --git a/src/components/frontend/notifications/NotificationsInbox.tsx b/src/components/frontend/notifications/NotificationsInbox.tsx
index 39a0aa4..23c21ff 100644
--- a/src/components/frontend/notifications/NotificationsInbox.tsx
+++ b/src/components/frontend/notifications/NotificationsInbox.tsx
@@ -185,7 +185,9 @@ export function NotificationsInbox({
                         {timeAgo(item.createdAt)}
                       </span>
                     </div>
-                    <ItemTitle className="max-w-full text-foreground">{item.title}</ItemTitle>
+                    <ItemTitle className="line-clamp-2 max-w-full text-foreground">
+                      {item.title}
+                    </ItemTitle>
                     {item.message && <ItemDescription>{item.message}</ItemDescription>}
                   </ItemContent>
                   {item.link && (