feat(wip homepage with new design)

resources/js/components/common/ScrollToTop.tsx

@@ -0,0 +1,33 @@
+import { useEffect, useState } from 'react';
+import { ChevronUp } from 'lucide-react';
+
+export function ScrollToTop() {
+    const [isVisible, setIsVisible] = useState(false);
+
+    useEffect(() => {
+        const hero = document.getElementById('hero');
+        if (!hero) return;
+
+        const observer = new IntersectionObserver(
+            ([entry]) => setIsVisible(!entry.isIntersecting),
+            { threshold: 0 },
+        );
+
+        observer.observe(hero);
+        return () => observer.disconnect();
+    }, []);
+
+    const scrollToTop = () => window.scrollTo({ top: 0, behavior: 'smooth' });
+
+    if (!isVisible) return null;
+
+    return (
+        <button
+            onClick={scrollToTop}
+            aria-label="Retour en haut"
+            className="fixed bottom-6 right-6 z-50 p-3 rounded-full border-3 border-black bg-primary shadow-[4px_4px_0px_rgba(0,0,0,1)] hover:shadow-none hover:translate-x-1 hover:translate-y-1 transition duration-200"
+        >
+            <ChevronUp className="size-5" />
+        </button>
+    );
+}