Branding

Built-in branding and theming system gives you complete control over the visual appearance. Change colors, fonts, and styling to match your brand or create a unique experience.

Default theme

There is one main theme with two variants:

Using a theme

Set the theme in your metadata.json:

{
  "id": "barcelona",
  "themeId": "default-light"
}

Or "default-dark" for the dark theme.

That's it! The entire app adopts the theme—cards, buttons, player, sheets, everything.

What you can customize

Themes control virtually every visual aspect:

Theme structure

Themes are TypeScript objects with a specific structure. Here's a simplified view:

const myTheme = {
  id: 'my-theme',
  name: 'My Theme',
 
  header: { /* colors, progress bar */ },
  mainContent: { /* background */ },
  cards: { /* colors, typography, shadows */ },
  buttons: { /* primary, secondary styles */ },
  miniPlayer: { /* player controls, progress */ },
  sheets: { /* bottom sheet styles */ },
  typography: { /* font families */ },
  colors: { /* semantic color palette */ },
  // ...and more
};

Each section controls a specific part of the UI. We'll cover all of them in Theme Reference.

Quick customization

Want to just change the accent color? You don't need a full custom theme.

The easiest approach is to copy an existing theme and modify it:

cp src/theme/themes/default-light.ts src/theme/themes/my-brand.ts

import { myBrandTheme } from './my-brand';
 
export const themes = {
  'default-light': defaultLightTheme,
  'default-dark': defaultDarkTheme,
  'my-brand': myBrandTheme,
};

Per-language themes

You can use different themes for different languages by overriding in the language file:

// es.json
{
  "id": "barcelona",
  "language": "es",
  "themeId": "warm-theme"
}

Spanish visitors would see warm-theme while others see whatever's in metadata.json.

Custom fonts

Themes support custom fonts from Google Fonts (or self-hosted):

typography: {
  fontFamily: {
    sans: ['Roboto', 'system-ui', 'sans-serif'],
    heading: ['Playfair Display', 'serif'],
    numbers: ['JetBrains Mono', 'monospace'],
  },
}

Remember to add the font to index.html:

<link href="https://fonts.googleapis.com/css2?family=Playfair+Display:wght@700&display=swap" rel="stylesheet">

Branding: Custom logo

Display your logo on the tour start screen:

branding: {
  logoUrl: 'https://your-domain.com/logo.svg',
  showLogoBorder: true,
  logoSize: 'fit',  // or 'original'
}

What you can't customize

Some things are intentionally fixed:

• Component layout - Where elements are positioned
• Animation types - Transitions use spring physics
• Icon shapes - Only colors are themeable
• Spacing between elements - Some spacing is hardcoded

These constraints ensure the app remains usable and visually consistent regardless of theme choices.