feat(smooth-scroll): implement smooth scrolling functionality with Lenis integration

app/globals.css

@@ -62,6 +62,23 @@ body::before {
   will-change: transform;
 }
 
+html.lenis,
+html.lenis body {
+  height: auto;
+}
+
+.lenis.lenis-smooth {
+  scroll-behavior: auto !important;
+}
+
+.lenis.lenis-smooth [data-lenis-prevent] {
+  overscroll-behavior: contain;
+}
+
+.lenis.lenis-stopped {
+  overflow: hidden;
+}
+
 .font-heading {
   font-family: "Space Grotesk", "Manrope", "Segoe UI", sans-serif;
 }