feat: update NotFound window title for better user experience

.gitignore

@@ -39,3 +39,6 @@ yarn-error.log*
 # typescript
 *.tsbuildinfo
 next-env.d.ts
+
+# brainstorm
+.superpowers/

app/not-found.tsx

@@ -5,7 +5,7 @@ import GoBackButton from "@/components/go-back-button";
 export default function NotFound() {
   return (
     <div className="mx-auto max-w-md pt-16">
-      <Window title="Windows cannot find this page">
+      <Window title="Oopsie doopsie! You're lost!">
         <div className="flex items-start gap-4 mb-6">
           <div className="flex-shrink-0 flex h-10 w-10 items-center justify-center rounded-full bg-red-600 shadow-inner">
             <svg

app/page.tsx

@@ -1,12 +1,20 @@
 import { getSortedPostsData, PostMeta } from "../lib/posts";
 import Link from "next/link";
 import Window from "../components/window";
+import Badges from "../components/badges";
+
+function isNew(dateStr: string): boolean {
+  const postDate = new Date(dateStr);
+  const now = new Date();
+  const diffDays = (now.getTime() - postDate.getTime()) / (1000 * 60 * 60 * 24);
+  return diffDays <= 30;
+}
 
 export default function Home() {
   const allPostsData: PostMeta[] = getSortedPostsData();
 
   return (
-    <div className="space-y-12">
+    <div className="space-y-6">
       <header className="text-center">
         <h1 className="text-5xl font-bold text-white [text-shadow:_2px_2px_4px_rgb(0_0_0_/_40%)]">
           Gabriel's Kaszewski Blog
@@ -17,16 +25,25 @@ export default function Home() {
       </header>
 
       <section>
-        {/* The list of posts is displayed inside our custom Window component */}
+        <Window title="Blog Posts" showRss>
-        <Window title="Blog Posts">
           {allPostsData.length > 0 ? (
             <ul className="space-y-4">
-              {allPostsData.map(({ id, date, title }) => (
+              {allPostsData.map(({ id, date, title, wip }) => (
                 <li key={id}>
                   <Link
                     href={`/posts/${id}`}
-                    className="block rounded-md bg-white/50 p-4 transition-all duration-200 hover:bg-white/80 hover:shadow-md"
+                    className="relative block overflow-hidden rounded-md bg-white/50 p-4 transition-all duration-200 hover:bg-white/80 hover:shadow-md"
                   >
+                    {isNew(date) && !wip && (
+                      <div className="animate-blink absolute top-[10px] right-[-24px] w-[100px] rotate-[35deg] bg-[#e05010] py-0.5 text-center text-[9px] font-bold text-white shadow-sm">
+                        NEW!
+                      </div>
+                    )}
+                    {wip && (
+                      <div className="absolute top-[10px] right-[-24px] w-[100px] rotate-[35deg] bg-amber-500 py-0.5 text-center text-[9px] font-bold text-white shadow-sm">
+                        🚧 WIP
+                      </div>
+                    )}
                     <h3 className="font-bold text-lg text-blue-800">{title}</h3>
                     <small className="text-gray-600">
                       {new Date(date).toLocaleDateString("en-US", {

app/posts/[slug]/page.tsx

@@ -8,9 +8,7 @@ import rehypePrettyCode from "rehype-pretty-code";
 import rehypeSlug from "rehype-slug";
 
 interface PageProps {
-  params: {
+  params: Promise<{ slug: string }>;
-    slug: string;
-  };
 }
 
 export async function generateStaticParams() {
@@ -19,18 +17,21 @@ export async function generateStaticParams() {
 }
 
 export async function generateMetadata({ params }: PageProps) {
-  const postData = await getPostData(params.slug);
+  const { slug } = await params;
+  const postData = await getPostData(slug);
   return {
     title: `${postData.title} | Gabriel's Kaszewski Blog`,
   };
 }
 
 export default async function Post({ params }: PageProps) {
-  const postData: PostData = await getPostData(params.slug);
+  const { slug } = await params;
+  const postData: PostData = await getPostData(slug);
 
   return (
-    <div className="mx-auto max-w-5xl">
+    <div className="mx-auto max-w-6xl">
-      <Window title={postData.title} showProgress>
+      <div className="lg:flex lg:gap-4 lg:items-start">
+        <Window title={postData.title} showProgress className="lg:flex-1 min-w-0">
           <article>
             <div className="mb-4 text-gray-500 flex flex-col gap-1">
               <span>
@@ -50,15 +51,14 @@ export default async function Post({ params }: PageProps) {
               </div>
             )}
 
-          {/* Mobile TOC — shown above article, hidden on lg+ */}
+            {/* Mobile TOC — inline above article, hidden on lg+ */}
             {postData.headings.length > 0 && (
-            <div className="lg:hidden mb-6">
+              <div className="lg:hidden mb-6 bg-white/20 backdrop-blur border border-white/30 rounded-lg p-4">
                 <TableOfContents headings={postData.headings} />
               </div>
             )}
 
-          <div className="lg:flex lg:gap-8 lg:items-start">
+            <div className="prose lg:prose-lg max-w-none">
-            <div className="prose lg:prose-lg max-w-none flex-1 min-w-0">
               <MDXRemote
                 source={postData.content}
                 options={{
@@ -77,16 +77,18 @@ export default async function Post({ params }: PageProps) {
                 }}
               />
             </div>
+          </article>
+        </Window>
 
-            {/* Desktop TOC sidebar — hidden on mobile */}
+        {/* Desktop TOC — separate Aero Window, sticky on the right */}
         {postData.headings.length > 0 && (
-              <div className="hidden lg:block w-52 flex-shrink-0">
+          <div className="hidden lg:block w-56 flex-shrink-0 sticky top-8">
+            <Window title="Contents">
               <TableOfContents headings={postData.headings} />
+            </Window>
           </div>
         )}
       </div>
-        </article>
-      </Window>
 
       <div className="mt-8 text-center">
         <Link

components/badges.tsx

@@ -0,0 +1,85 @@
+import Link from "next/link";
+
+interface BadgeProps {
+  href?: string;
+  children: React.ReactNode;
+  style?: React.CSSProperties;
+}
+
+function Badge({ href, children, style }: BadgeProps) {
+  const base = (
+    <div
+      className="flex items-center justify-center border border-white/40 text-center font-mono leading-tight select-none"
+      style={{ width: 88, height: 31, fontSize: 9, ...style }}
+    >
+      {children}
+    </div>
+  );
+
+  if (href) {
+    if (href.startsWith("http")) {
+      return (
+        <a href={href} target="_blank" rel="noopener noreferrer" className="hover:opacity-80 transition-opacity">
+          {base}
+        </a>
+      );
+    }
+    return (
+      <Link href={href} className="hover:opacity-80 transition-opacity">
+        {base}
+      </Link>
+    );
+  }
+  return base;
+}
+
+export default function Badges() {
+  return (
+    <div className="flex flex-wrap gap-1.5">
+      <Badge
+        href="https://nextjs.org"
+        style={{ background: "linear-gradient(135deg, #0d0d0d, #1a1a2e)", color: "#7dd3fc", borderColor: "#334155" }}
+      >
+        <span>⬛ Next.js</span>
+      </Badge>
+
+      <Badge
+        href="https://bun.sh"
+        style={{ background: "linear-gradient(135deg, #1a0a00, #2d1500)", color: "#fb923c", borderColor: "#7c2d12" }}
+      >
+        🍞 Powered by Bun
+      </Badge>
+
+      <Badge
+        style={{ background: "linear-gradient(135deg, #0c1a3a, #1e3a6e)", color: "#93c5fd", borderColor: "#1e40af" }}
+      >
+        <div>
+          <div>Best viewed</div>
+          <div>1024×768</div>
+        </div>
+      </Badge>
+
+      <Badge
+        href="/feed.xml"
+        style={{ background: "linear-gradient(135deg, #431407, #7c2d12)", color: "#fde68a", borderColor: "#b45309" }}
+      >
+        📡 Valid RSS
+      </Badge>
+
+      <Badge
+        style={{ background: "linear-gradient(135deg, #0f172a, #1e1b4b)", color: "#c4b5fd", borderColor: "#4c1d95" }}
+      >
+        Made with ♥
+      </Badge>
+
+      <Badge
+        style={{ background: "linear-gradient(135deg, #0369a1, #0ea5e9)", color: "white", borderColor: "#38bdf8" }}
+      >
+        <div>
+          <div style={{ fontSize: 8 }}>✦ Frutiger</div>
+          <div style={{ fontSize: 8 }}>Aero ✦</div>
+        </div>
+      </Badge>
+    </div>
+  );
+}

components/go-back-button.tsx

@@ -4,9 +4,19 @@ import { useRouter } from "next/navigation";
 
 export default function GoBackButton() {
   const router = useRouter();
+
+  const handleBack = () => {
+    if (window.history.length > 1) {
+      router.back();
+    } else {
+      router.push("/");
+    }
+  };
+
   return (
     <button
-      onClick={() => router.back()}
+      onClick={handleBack}
+      aria-label="Go back to previous page"
       className="px-4 py-1.5 text-sm bg-gradient-to-b from-blue-100 to-blue-200 border border-blue-300 rounded hover:from-blue-200 hover:to-blue-300 transition-colors"
     >
       ← Go Back

components/table-of-contents.tsx

@@ -35,7 +35,7 @@ export default function TableOfContents({ headings }: TableOfContentsProps) {
   if (headings.length === 0) return null;
 
   return (
-    <nav className="bg-white/20 backdrop-blur border border-white/30 rounded-lg p-4 lg:sticky lg:top-8">
+    <nav>
       <p className="text-xs font-bold uppercase tracking-widest text-blue-800 mb-3">
         Contents
       </p>

components/window.tsx

@@ -47,6 +47,7 @@ interface WindowProps {
   children: React.ReactNode;
   className?: string;
   showProgress?: boolean;
+  showRss?: boolean;
 }
 
 export default function Window({
@@ -54,18 +55,21 @@ export default function Window({
   children,
   className = "",
   showProgress = false,
+  showRss = false,
 }: WindowProps) {
   return (
     <div
       className={`rounded-lg border border-white/30 bg-white/70 shadow-window backdrop-blur-xl ${className}`}
     >
-      <div className="rounded-t-md overflow-hidden">
+      <div className="rounded-t-md overflow-hidden sticky top-0 z-10">
         <div className="flex select-none items-center justify-between bg-gradient-to-b from-blue-500 to-window-title px-4 py-1.5 font-bold text-white text-sm">
           <div className="flex items-center space-x-2">
             <span>{title}</span>
+            {showRss && (
               <Link href="/feed.xml" title="RSS Feed">
                 <RSSIcon className="h-4 w-4 opacity-80 hover:opacity-100" />
               </Link>
+            )}
           </div>
           <div className="flex items-center space-x-2">
             <div className="flex h-4 w-4 items-center justify-center opacity-80">

lib/posts.ts

@@ -2,6 +2,7 @@ import fs from 'fs';
 import path from 'path';
 import matter from 'gray-matter';
 import readingTime from 'reading-time';
+import { notFound } from 'next/navigation';
 
 const postsDirectory = path.join(process.cwd(), 'posts');
 
@@ -90,6 +91,7 @@ export function getAllPostIds() {
 
 export async function getPostData(id: string): Promise<PostData> {
   const fullPath = path.join(postsDirectory, `${id}.mdx`);
+  if (!fs.existsSync(fullPath)) notFound();
   const fileContents = fs.readFileSync(fullPath, 'utf8');
   const matterResult = matter(fileContents);
   const stats = readingTime(matterResult.content);