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.

src/pages/statistiken/fight.astro

@@ -5,6 +5,6 @@ import {t} from "astro-i18n";
 ---
 
 <PageLayout title={t("stats.title")}>
-    <h1>{t("stats.title")}</h1>
+    <h1 style="font-family: 'Barlow Condensed', sans-serif; letter-spacing: 0.06em;">{t("stats.title")}</h1>
     <FightStatistics client:only="svelte"/>
 </PageLayout>