feat: add interactive stacked cube components with hover descriptions

src/components/ui/ScrollUp.tsx

@@ -0,0 +1,22 @@
+'use client'
+
+import { ChevronDoubleUpIcon } from '@heroicons/react/24/outline'
+import { useScroll } from '@/hooks/useScroll'
+
+export function ScrollUp() {
+  const { isAtBottom, scrollToTop } = useScroll()
+
+  if (!isAtBottom) {
+    return null
+  }
+
+  return (
+    <button
+      onClick={scrollToTop}
+      className="fixed bottom-8 right-8 z-50 flex items-center gap-x-2 text-2xl font-medium text-[#1c1c49] lg:text-3xl animate-blink"
+    >
+      <span>top</span>
+      <ChevronDoubleUpIcon className="h-6 w-6" />
+    </button>
+  )
+}