🎨 Palette: Add active states to buttons and social cards

[keough99]

💡 What: Added CSS :active states to .btn and .social-card components.
🎯 Why: To improve micro-UX by providing continuous, satisfying tactile feedback during mouse interactions (e.g. scaling down slightly) when users click on interactive transform-based elements.
📸 Before/After: Before, buttons only had a :hover state and felt unresponsive when clicked. After, pressing down on these elements triggers a slight scale/translate adjustment to simulate physical pressing.
♿ Accessibility: Ensures interactive elements provide immediate, consistent visual feedback for pointer events.

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PR created automatically by Jules for task 5118758904766325834 started by @keough99

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