velxio/frontend/src/components/layout/LanguageSwitcher.css

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feat(i18n): react-i18next foundation + 9-locale support for header / footer This is Phase 1 of multi-language support: the visible chrome (header, footer, language switcher) and routing are wired up for all 9 locales (en, es, pt-br, it, fr, zh-cn, de, ja, ru) — same set the blog at velxio.dev/blog/ already supports. The Editor and the long-form landing-page copy are still English-only and will be translated in a follow-up. Infrastructure - frontend/src/i18n/config.ts: locale registry + LOCALE_META (htmlLang, native name, og locale, dir). Mirrors pro/blog/src/i18n/config.ts so cookie sync stays consistent. - frontend/src/i18n/cookie.ts: read/write the velxio_locale cookie at Path=/; Max-Age=1y; SameSite=Lax (Secure on HTTPS). The blog reads the same cookie via an inline script in its Layout.astro. - frontend/src/i18n/path.ts: getLocaleFromPath / stripLocaleFromPath / localizedPath / switchLocale / blogUrlFor — match the blog's helpers one-to-one. - frontend/src/i18n/index.ts: i18next bootstrap. English bundle is inlined synchronously for first paint; non-default locales are lazy-loaded via dynamic import on demand. Initial locale is decided in priority order URL > cookie > navigator > en. - frontend/src/i18n/LocaleSync.tsx: top-level wrapper inside <Router>. On every URL change loads the matching locale bundle, calls i18n.changeLanguage, writes the cookie, and mirrors the locale onto <html lang> and dir. - frontend/src/i18n/useLocalizedNavigate.ts: useCurrentLocale, useLocalizedHref, useLocalizedNavigate hooks for components that build internal links. Routing - App.tsx: route table extracted to a single ROUTES array, then registered twice — once at the root (default English) and once nested under each non-default locale (`/<locale>/...`). Explicit per-locale parent routes (rather than a generic `:lang` param) so React Router never accidentally swallows a real top-level path like `/circuit-simulator` as a locale segment. Header / Footer - LanguageSwitcher.tsx + .css: dropdown matching the blog's LanguageSwitcher.astro. Globe icon + locale code on the trigger, native names + ISO codes in the menu. Click → `switchLocale()` rewrites the URL under the new locale; LocaleSync handles the rest (load bundle, change language, write cookie). - AppHeader.tsx: every nav label and the auth dropdown copy now goes through `t('header.nav.*')`, `t('header.auth.*')`. All internal Links wrapped with localize() so navigation stays inside the active locale. Added a "Blog" link computed via `blogUrlFor(currentLocale)` so /es/ → /blog/es/, etc. - LandingPage.tsx: footer About-Velxio paragraph reads from t('footer.about'). Translations (Phase 1 strings) - frontend/src/i18n/locales/<locale>/common.json: nav labels, auth buttons, footer About copy. Hand-translated for all 9 locales, AGPLv3 / brand names preserved as-is. Tooling - frontend/scripts/translate-i18n.mjs: standalone Node script that takes the en.json bundles and auto-translates them to the 8 other locales via DeepSeek (primary) + Gemini (fallback). One LLM call per (locale, namespace) pair. Run after extracting new strings with `npm run translate:i18n`. Phase 2 (deferred) - Editor (toolbar, file explorer, simulator canvas, component picker, library manager, error toasts) — hundreds of strings. - Examples / Docs / About / Profile pages. - The translate-i18n.mjs script is ready to handle these once the strings have been extracted into JSON keys.
2026-05-09 10:40:37 +07:00
.velxio-language-switcher {
position: relative;
}
.velxio-language-btn {
display: flex;
align-items: center;
gap: 4px;
padding: 4px 8px;
background: transparent;
border: none;
color: #86868b;
border-radius: 6px;
cursor: pointer;
font-size: 12px;
transition: color 0.2s, background 0.2s;
font-family: inherit;
}
.velxio-language-btn:hover {
color: #f5f5f7;
background: rgba(255, 255, 255, 0.08);
}
.velxio-language-current {
font-size: 11px;
font-weight: 500;
letter-spacing: 0.4px;
}
.velxio-language-menu {
position: absolute;
right: 0;
top: 110%;
list-style: none;
margin: 6px 0 0;
padding: 6px 0;
background: #1c1c1e;
border: 1px solid rgba(255, 255, 255, 0.08);
border-radius: 8px;
min-width: 200px;
z-index: 200;
box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}
.velxio-language-item {
display: flex;
align-items: center;
justify-content: space-between;
gap: 12px;
width: 100%;
background: transparent;
border: none;
padding: 8px 14px;
color: #ccc;
font-size: 13px;
cursor: pointer;
text-align: left;
font-family: inherit;
transition: color 0.15s, background 0.15s;
}
.velxio-language-item:hover {
background: rgba(255, 255, 255, 0.06);
color: #f5f5f7;
}
.velxio-language-item-active {
color: #0071e3;
font-weight: 500;
}
.velxio-language-code {
font-size: 11px;
color: #6e6e73;
letter-spacing: 0.4px;
}
/* Inside the editor's bottom-left corner box the switcher sits at the
bottom edge of the screen the menu must drop UP or it opens straight
into the void below the viewport. */
.editor-corner-box .velxio-language-menu {
top: auto;
bottom: 110%;
margin: 0 0 6px;
}
/* Same drop-up need at the explorer footer. */
.explorer-account-footer .velxio-language-menu {
top: auto;
bottom: 110%;
margin: 0 0 6px;
}