feat(ui): add up/down hover animations to stats cards

[PAVAN-DEVMURARI]

What does this PR do?

• Enhancement: Moves the YouTube stats cards in opposite directions on hover to better reflect their meaning.
  • The “1.01K Subscribers” card now slides up by 5px on hover.
  • The “114 Videos Uploaded” card now slides down by 5px on hover.
• Motivation & Context:
  • Improves UI semantics by visually signaling “growth” (subscribers ↑) and “uploads” (videos ↓).
  • Adds a subtle polish that enhances interactivity and aligns with modern design patterns.
• Dependencies:
  • No new dependencies; purely CSS changes.

Fixes #2000

Screen.Recording.2025-08-03.112253.mp4

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