- Updated SCSS for dark mode to use `:where()` for better specificity in styling `.markdown-body`.
- Added transparent background to highlighted code blocks in dark mode.
- Removed unnecessary navigation buttons from various pages to streamline the user interface.
- Introduced a new post preview page to allow users to view posts before publishing, with visibility handling for different post states.
These changes improve the visual consistency in dark mode and enhance the user experience when managing posts.
