Manga Verse Header - Copy this React, Tailwind Component to your project

Generate a UI for an online manga reading site called MangaVerse Online. It should be aesthetically appealing, intuitive, and modern. Include light and dark mode, with dark mode as the default theme. In the header, add a logo for the website, a search bar, login and register buttons, an 18+ content filter switch, and a dark/light mode toggle.