feat: Add UI components related to landing page

components/landing/ui/button.tsx

@@ -0,0 +1,47 @@
+import * as React from "react";
+import { VariantProps, cva } from "class-variance-authority";
+
+import { cn } from "@/lib/utils";
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center rounded-md text-sm font-medium transition-colors focus:outline-none  dark:hover:bg-zinc-800 dark:hover:text-zinc-100 disabled:opacity-50  disabled:pointer-events-none  data-[state=open]:bg-zinc-100 dark:data-[state=open]:bg-zinc-800",
+  {
+    variants: {
+      variant: {
+        default: "bg-zinc-900 text-white hover:bg-zinc-700 dark:bg-zinc-50 dark:text-zinc-900",
+        destructive: "bg-red-500 text-white hover:bg-red-600 dark:hover:bg-red-600",
+        outline:
+          "bg-transparent border border-zinc-200 hover:bg-zinc-100 dark:border-zinc-700 dark:text-zinc-100",
+        subtle: "bg-zinc-100 text-zinc-900 hover:bg-zinc-200 dark:bg-zinc-800 dark:text-zinc-100",
+        ghost:
+          "bg-transparent hover:bg-zinc-100 dark:hover:bg-zinc-800 dark:text-zinc-100 dark:hover:text-zinc-100 data-[state=open]:bg-transparent dark:data-[state=open]:bg-transparent",
+        link: "bg-transparent dark:bg-transparent underline-offset-4 hover:underline text-zinc-900 dark:text-zinc-100 hover:bg-transparent dark:hover:bg-transparent",
+      },
+      size: {
+        square: "h-10 w-10",
+        default: "h-10 py-2 px-4",
+        sm: "h-9 px-2 rounded-md",
+        lg: "h-11 px-8 rounded-md",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  },
+);
+
+export interface ButtonProps
+  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
+    VariantProps<typeof buttonVariants> {}
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, ...props }, ref) => {
+    return (
+      <button className={cn(buttonVariants({ variant, size, className }))} ref={ref} {...props} />
+    );
+  },
+);
+Button.displayName = "Button";
+
+export { Button, buttonVariants };

components/landing/ui/header.tsx

@@ -17,7 +17,7 @@ export const Header: React.FC = () => {
               <li>
                 <Link
                   className="text-sm font-medium text-zinc-300 hover:text-white duration-500"
-                  href="/"
+                  href="/overview"
                 >
                   Sign in
                 </Link>

components/landing/ui/scroll-area.tsx

@@ -0,0 +1,46 @@
+"use client";
+
+import * as React from "react";
+import * as ScrollAreaPrimitive from "@radix-ui/react-scroll-area";
+
+import { cn } from "@/lib/utils";
+
+const ScrollArea = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.Root>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.Root>
+>(({ className, children, ...props }, ref) => (
+  <ScrollAreaPrimitive.Root
+    ref={ref}
+    className={cn("relative overflow-hidden", className)}
+    {...props}
+  >
+    <ScrollAreaPrimitive.Viewport className="h-full w-full rounded-[inherit]">
+      {children}
+    </ScrollAreaPrimitive.Viewport>
+    <ScrollBar />
+    <ScrollAreaPrimitive.Corner />
+  </ScrollAreaPrimitive.Root>
+));
+ScrollArea.displayName = ScrollAreaPrimitive.Root.displayName;
+
+const ScrollBar = React.forwardRef<
+  React.ElementRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>,
+  React.ComponentPropsWithoutRef<typeof ScrollAreaPrimitive.ScrollAreaScrollbar>
+>(({ className, orientation = "vertical", ...props }, ref) => (
+  <ScrollAreaPrimitive.ScrollAreaScrollbar
+    ref={ref}
+    orientation={orientation}
+    className={cn(
+      "flex touch-none select-none transition-colors",
+      orientation === "vertical" && "h-full w-2.5 border-l border-l-transparent p-[1px]",
+      orientation === "horizontal" && "h-2.5 border-t border-t-transparent p-[1px]",
+      className,
+    )}
+    {...props}
+  >
+    <ScrollAreaPrimitive.ScrollAreaThumb className="relative flex-1 rounded-full bg-zinc-300 dark:bg-zinc-700" />
+  </ScrollAreaPrimitive.ScrollAreaScrollbar>
+));
+ScrollBar.displayName = ScrollAreaPrimitive.ScrollAreaScrollbar.displayName;
+
+export { ScrollArea, ScrollBar };