feat(ui): dark/light mode toggle with system preference detection#523
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Tinna23 merged 1 commit intoJun 21, 2026
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…StellarCommons#513) - Add CSS custom properties for dark (default) and light themes in globals.css - Create useTheme hook: reads localStorage, falls back to prefers-color-scheme - Create ThemeToggle component (sun/moon icon button) for AppShell and Navbar - Add FOUC-prevention inline script to layout.tsx - Convert all hardcoded colors to CSS vars in: AppShell, Card, Pill, Label, AddressChip, SearchBar, TabSwitcher, TransactionResult, AccountResult - Update landing page (Navbar, HeroSection, page.tsx) to use CSS vars - Fix 3 pre-existing TS errors in UseCasesSection.tsx - Add missing eslint-config-prettier dependency
10 tasks
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Closes #513
Summary
Adds a full theme system to Stellar Explain, converting all hardcoded colors to CSS custom properties and adding a toggle button that persists across page reloads.
Changes
New files:
src/hooks/useTheme.ts— reads localStorage, falls back toprefers-color-scheme, syncsdata-themeattributesrc/components/ThemeToggle.tsx— sun/moon icon button with CSS var stylingModified files:
src/app/globals.css— full dark (default) + light token set as CSS custom propertiessrc/app/layout.tsx— inline FOUC-prevention script on<html>src/components/AppShell.tsx— CSS vars throughout + ThemeToggle in headersrc/components/Card.tsx,Pill.tsx,Label.tsx,AddressChip.tsx— all CSS varssrc/components/SearchBar.tsx,TabSwitcher.tsx— all CSS varssrc/components/TransactionResult.tsx,AccountResult.tsx— all CSS varssrc/components/landing/Navbar.tsx,HeroSection.tsx,src/app/page.tsx— CSS vars + ThemeToggle in NavbarBug fixes (pre-existing):
UseCasesSection.tsx(entryanddpossibly undefined)eslint-config-prettierdependency (build was broken on main)Acceptance Criteria
<head>)transition: background-color 0.2s easeonhtml)npm run buildpasses)