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fix(bg): add translucent veil so animated bgs don't bleed UI

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The single bg-fx layer was painting at full vibrancy behind the entire
app. Most UI elements use rgba() fills — chips, sub-panels, the
achievements .ach-item, the goal-tier bar — so saturated colors bled
right through, hurting readability on the Достижения / dashboard /
mocks tabs.

Layered fix:
  • bg-fx drops to z-index:-2 (the animated layer)
  • new #ls-bg-veil sits on z-index:-1 with rgba(245,247,251,.78)
    (light) or rgba(15,23,42,.55) when body[data-bg-tone='dark']
  • applyCosmetics injects both elements and tags the body with
    bg-tone based on the slug (dark/stars/aurora/nebula/grid go dark,
    everything else light)
  • clearing the bg removes both layers + the tone attribute

Result: animations stay perceptible (~22% of the chosen palette comes
through the veil), but the page chrome reads at normal contrast.

Shop swatches keep full vibrancy — the .bg-preview is meant to show
the raw palette so users can compare.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Maxim Dolgolyov
2026-05-29 21:27:35 +03:00
parent 1b04384770
commit d2ca0d61cc
2 changed files with 38 additions and 6 deletions
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js/api.js
+19 -5
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@@ -1080,19 +1080,33 @@ async function applyCosmetics() {
// ── Background: paint a fixed div behind the whole UI ──
// The element is created on demand and reused on subsequent calls
// so swapping backgrounds doesn't flash.
// so swapping backgrounds doesn't flash. A second fixed div sits
// ON TOP of it (#ls-bg-veil, z-index:-1 vs bg-fx -2) acting as a
// translucent veil so vibrant animations don't drown out the UI.
// The tone attr on <body> lets the veil darken for dark presets.
const DARK_BG_SLUGS = new Set(['dark', 'stars', 'aurora', 'nebula', 'grid']);
if (c.background && c.background.slug && c.background.slug !== 'none') {
const slug = String(c.background.slug).replace(/[^a-z0-9_-]/gi, '');
let bgEl = document.getElementById('ls-bg-fx');
if (!bgEl) {
bgEl = document.createElement('div');
bgEl.id = 'ls-bg-fx';
document.body.insertBefore(bgEl, document.body.firstChild);
}
bgEl.className = 'bg-' + String(c.background.slug).replace(/[^a-z0-9_-]/gi, '');
bgEl.className = 'bg-' + slug;
let veilEl = document.getElementById('ls-bg-veil');
if (!veilEl) {
veilEl = document.createElement('div');
veilEl.id = 'ls-bg-veil';
// Insert just after bg-fx so it paints above (same z-index gap).
bgEl.parentNode.insertBefore(veilEl, bgEl.nextSibling);
}
document.body.dataset.bgTone = DARK_BG_SLUGS.has(slug) ? 'dark' : 'light';
} else {
// Active bg was cleared — remove the element if present.
const bgEl = document.getElementById('ls-bg-fx');
if (bgEl) bgEl.remove();
// Active bg was cleared — remove both layers.
document.getElementById('ls-bg-fx')?.remove();
document.getElementById('ls-bg-veil')?.remove();
delete document.body.dataset.bgTone;
}
// ── Frame: apply CSS to sidebar avatar on every page ──