feat: hero

[NeerajCodz]

This pull request makes significant visual and stylistic updates to the DevJams '26 homepage, focusing on branding, theming, and interactive UI elements. The changes include a new animated logo, a modernized dark theme with Google Sans font, and an animated track icons section. The page layout and metadata have also been updated to match the new branding.

Branding and Visual Updates:

• Replaced the default Next.js content with a custom animated DevJams '26 logo, tagline, and an "Idea Submission" button, all styled with Google Sans and enhanced with motion animations for interactivity.
• Updated page metadata to reflect the DevJams '26 event.

Theming and Styling:

• Switched the color scheme to a true dark mode (black background, white text), removed light/dark theme toggling, and standardized the font to Google Sans throughout the app. [1] [2]
• Updated global CSS to import Google Sans and set new CSS variables for consistent theming.

Layout and Structure:

• Simplified the layout component, removing unused fonts and ensuring the app always uses the dark theme.
• Added responsive scaling and positioning for logo and track icons to improve appearance across devices.

Dependencies:

• Added the motion library for React animations.

These changes modernize the homepage, provide a strong event identity, and set the foundation for further interactive features.