style(ui): update auth pages layout and navigation capitalization

This commit improves the visual design of the auth pages by adding a new layout wrapper with an animated blob background effect and updating the auth card shell with a glassmorphism style. It also updates the navigation items to use capitalized labels instead of lowercase for better readability.

src/shared/components/navigation/navbar/nav-pill.tsx

@@ -25,7 +25,7 @@ export function NavPill({ href, preservePeriod, children }: NavPillProps) {
 			preservePeriod={preservePeriod}
 			className={cn(
 				buttonVariants({ variant: "navbar", size: "sm" }),
-				"lowercase",
+				"capitalize",
 				isActive && "bg-black/15 text-black",
 			)}
 		>