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Use static style tag in HTML source for accent color persistence

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Vite's initialization strips dynamically created elements from <head>.
Place <style id="umbra-accent"> directly in the HTML source instead of
creating it with createElement. Source-authored elements survive Vite's
head cleanup. The inline script populates it via textContent (XSS-safe).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Kyle 2026-03-12 20:47:02 +08:00
parent f9359bd78a
commit 4e1b59c0f9
1 changed files with 7 additions and 7 deletions
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14
frontend/index.html
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@ -8,10 +8,12 @@
<meta name="theme-color" content="#09090b" />
<meta name="mobile-web-app-capable" content="yes" />
<title>UMBRA</title>
<!-- Static style tag — survives Vite's head cleanup (unlike dynamically created elements).
The inline script below populates it with accent color from localStorage cache. -->
<style id="umbra-accent"></style>
<script>
// Inject a <style> tag with !important accent color vars.
// Inline style attr gets stripped during page load (unknown cause),
// but a <style> tag with !important persists and beats @layer base defaults.
// Populate the static style tag with cached accent color before first paint.
// Uses textContent (safe from XSS) and !important (beats @layer base defaults).
(function() {
var h = '187', s = '85.7%', l = '53.3%';
try {
@ -23,10 +25,8 @@
if (p.l) l = p.l;
}
} catch(e) {}
var el = document.createElement('style');
el.id = 'umbra-accent';
el.textContent = ':root{--accent-h:' + h + ' !important;--accent-s:' + s + ' !important;--accent-l:' + l + ' !important}';
document.head.appendChild(el);
document.getElementById('umbra-accent').textContent =
':root{--accent-h:' + h + ' !important;--accent-s:' + s + ' !important;--accent-l:' + l + ' !important}';
})();
</script>
<link rel="preconnect" href="https://fonts.googleapis.com" />