style: visual upgrade — typography, gradient text, card borders, hero aurora

[romahawk]

Changes

• Typography: Space Grotesk (headings) + Inter (body) replaces Segoe UI system stack
• Hero title lead: cyan→blue gradient text via background-clip
• Project and milestone cards: gradient border using padding-box/border-box technique
• Hero background: slow aurora animation via CSS keyframes (GPU-composited, 14s loop)
• 3-track heading accent utility classes (.heading-accent--ai/medtech/fullstack)
• Card hover micro-interactions: translateY(-2px) + glow shadow
• All animations guarded by prefers-reduced-motion
• Light theme overrides provided for all gradient text treatments

Verification

• npm run lint: exit 0
• npm run build: exit 0

[vercel]

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Project	Deployment	Actions	Updated (UTC)
portfolio-fullstack	Ready	Preview	Aug 15, 2026 7:09am
portfolio-react	Ready	Preview	Aug 15, 2026 7:09am