Use purple theme on nostr-tagged pages

[dergigi]

Uses the Nostr purple palette on nostr tag pages and nostr-tagged blog posts, including matching header navigation and logo treatment.

• scopes the theme to nostr tag archives and tagged posts
• swaps in purple header and mobile-nav variants plus Nostr-specific logo assets
• updates page-level accent styles so links, tags, and focus states follow the Nostr palette on those pages

Closes #729

---

Build preview:

• /tags/nostr
• /blog/2023-year-in-review
• /blog/2024-year-in-review
• /blog/2025-year-in-review

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
os-website	Ready	Preview, Comment	May 8, 2026 9:36am

[Arvin21M]

Looks great where only nostr tags exist, but might pose an issue elsewhere:

• Any blog post or page containing the nostr tag, even if nostr is only the secondary tag, turns purple.
• Dual topic pages like the 2024 year in review (bitcoin and nostr) would show all purple where orange for bitcoin is needed as well.
• Perhaps when dual exists, default remains orange unless specifically coded in within the page to be purple will work better? When no dual tags exist, just nostr, then all purple.
• Examples where we have dual tags

[dergigi]

Perhaps when dual exists, default remains orange unless specifically coded in within the page to be purple will work better? When no dual tags exist, just nostr, then all purple.

Yeah, I think this is the way.

[dergigi]

Theme now stays on the default palette for mixed bitcoin + nostr posts, and dual-tag archive pages also stay default. Nostr-only posts still use the purple theme.

[dergigi]

This keeps mixed bitcoin + nostr posts on the default theme by default, while making #nostr-the-nostr-fund switch to the purple Nostr theme on:

• /blog/2023-year-in-review
• /blog/2024-year-in-review
• /blog/2025-year-in-review

[dergigi]

This keeps the header navigation links neutral on the Nostr theme pages, including the mobile menu, while leaving the Nostr-specific accents in place elsewhere.

Checked preview on /tags/nostr and the Mission, Funds, and About links are back to the usual gray header styling. CI and Vercel are passing.

[dergigi]

Let's try to get #728 merged before finalizing this one.

[Arvin21M]

Looks good to go!