feat: add sidebar

app/components/Sidebar.tsx

@@ -0,0 +1,24 @@
+import Link from "next/link";
+
+import styles from '../styles/Sidebar.module.css';
+
+const Sidebar = () => {
+  return (
+    <aside className={styles.sidebar}>
+      <h1 className={styles.title}>Hex: Unlocked</h1>
+
+      <nav>
+        <Link href="/characters" className={styles.navLink}>Characters</Link>
+        <Link href="/customizations" className={styles.navLink}>Customizations</Link>
+        <Link href="/items" className={styles.navLink}>Items</Link>
+        <Link href="/dlcs" className={styles.navLink}>DLCs</Link>
+      </nav>
+
+      <button className={styles.syncButton}>
+        Synchronize
+      </button>
+    </aside>
+  );
+};
+
+export default Sidebar;

app/page.tsx

@@ -1,7 +1,9 @@
+import Sidebar from "./components/Sidebar"
+
 export default function Home() {
   return (
     <main>
-      <div>Hello world!</div>
+      <Sidebar/>
     </main>
   );
 }

app/styles/Sidebar.module.css

@@ -0,0 +1,63 @@
+.sidebar {
+  width: 280px;
+  height: 100vh;
+  background: #050505;
+  border-right: 2px solid #1a1a1a;
+  display: flex;
+  flex-direction: column;
+  padding: 2.5rem 1.5rem;
+  color: #c9c9c9;
+  font-family: 'Oswald', 'Roboto Condensed', sans-serif;
+  letter-spacing: 0.02em;
+}
+
+.title {
+  font-size: 1.25rem;
+  text-transform: uppercase;
+  color: #e4e4e4;
+  margin-bottom: 2.5rem;
+  padding-bottom: 0.5rem;
+  border-bottom: 2px solid #330000;
+  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
+}
+
+.navLink {
+  display: block;
+  padding: 0.8rem 1rem;
+  margin-bottom: 0.25rem;
+  text-decoration: none;
+  color: #777777;
+  text-transform: uppercase;
+  font-size: 0.85rem;
+  position: relative;
+  transition: all 0.1s ease-in;
+  background: transparent;
+  border-left: 3px solid transparent;
+}
+
+.navLink:hover {
+  color: #ffffff;
+  background: linear-gradient(90deg, #1a0000, transparent);
+  border-left: 3px solid #a30000;
+}
+
+.syncButton {
+  margin-top: auto;
+  padding: 1rem;
+  background: #0a0a0a;
+  border: 1px solid #4a0000;
+  color: #a30000;
+  text-transform: uppercase;
+  font-weight: 700;
+  font-size: 0.9rem;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  letter-spacing: 0.1em;
+}
+
+.syncButton:hover {
+  background: #a30000;
+  color: #ffffff;
+  border-color: #ff0000;
+  box-shadow: 0 0 10px #7f0000;
+}