Wrap logo in Link component for consistent navigation

src/components/Nav.tsx

@@ -14,7 +14,9 @@ function Nav({ currentPage }: NavProps) {
     <nav className="navbar">
       <div className="nav-container">
         <div className="nav-logo">
-          <h2>🎯 {t('nav.logo')}</h2>
+          <Link to="/" style={{ textDecoration: 'none', color: 'inherit' }}>
+            <h2>🎯 {t('nav.logo')}</h2>
+          </Link>
         </div>
         <div className="nav-links">
           <a href="/" className={currentPage === 'home' ? 'active' : ''}>{t('nav.home')}</a>