feat(ui): design tokens + light/dark theming, migrate in-game chrome (F1a)

Introduce the shared design-token system under ui/frontend/src/lib/theme/: tokens.css (dark default + light palette, plus spacing/radii/typography scales), base.css global baseline (document background, text, token focus ring, selection), and theme.svelte.ts (system/light/dark choice, persisted to localStorage, applied via data-theme on <html>). A pre-paint guard in app.html resolves the theme before the app boots to avoid a flash, and the theme picker is wired into the previously-disabled account-menu stub. Migrate the always-visible in-game chrome to the tokens (header, account menu, sidebar, tab-bar, bottom-tabs, shell background): dark renders as before, light comes for free. The default stays dark during the incremental migration; the remaining view bodies migrate in F1b. Docs: ui/docs/design-system.md (+ index entry). Test: tests/theme.test.ts. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-22 07:02:13 +02:00
parent 44ed0a90eb
commit 973480d812
16 changed files with 560 additions and 53 deletions
@@ -0,0 +1,29 @@
+/*
+ * Global element baseline, layered on top of the design tokens. Kept
+ * deliberately small: it sets the document background, default text
+ * colour/typography, a token-driven focus ring, and selection colour.
+ * Component-scoped styles still own everything else.
+ *
+ * The focus-ring rule uses :where() so its specificity is zero and any
+ * component that defines its own focus treatment wins without !important.
+ */
+
+body {
+	margin: 0;
+	background: var(--color-bg);
+	color: var(--color-text);
+	font-family: var(--font-sans);
+	font-size: var(--text-base);
+	line-height: var(--leading-normal);
+	-webkit-font-smoothing: antialiased;
+	-moz-osx-font-smoothing: grayscale;
+}
+
+:where(*):focus-visible {
+	outline: 2px solid var(--color-focus);
+	outline-offset: 2px;
+}
+
+::selection {
+	background: var(--color-accent-subtle);
+}