Refactor styles and components for improved UI consistency

- Updated login page layout by removing unnecessary classes.
- Redesigned 404 not found page with new layout and styles.
- Enhanced public pages with consistent font styling and hover effects.
- Improved ranking page header styling for better readability.
- Updated rules page with consistent font and link styles.
- Enhanced statistics page header styling.
- Refined global CSS variables for better theme consistency.
- Updated button styles for improved interaction feedback.
- Enhanced table styles for better readability and interaction.
- Updated Tailwind configuration to include new font families.

tailwind.config.js

@@ -74,7 +74,8 @@ const config = {
                 sm: "calc(var(--radius) - 4px)",
             },
             fontFamily: {
-                sans: [...fontFamily.sans],
+                sans: ["Roboto", ...fontFamily.sans],
+                display: ["Barlow Condensed", ...fontFamily.sans],
             },
         },
     },