Files
zitadel/apps
Max Peintner a4e8ede52e feat(login): comprehensive theme system (#10848)
# Which Problems Are Solved

This PR introduces a comprehensive theme customization system for the
login application with responsive behavior and enhanced visual options.

<img width="1122" height="578" alt="Screenshot 2025-08-19 at 09 55 24"
src="https://github.com/user-attachments/assets/cdcc8948-533d-4e13-bf45-fdcc24acfb2b"
/>

# How the Problems Are Solved

##  Features Added

- **🔄 Responsive Layout System**: Automatic switching between
side-by-side and top-to-bottom layouts based on screen size
- **🖼️ Background Image Support**: Custom background images configurable
via environment variables
- **⚙️ Theme Configuration**: Complete theme system with roundness,
spacing, appearance, and layout options
- **📱 Mobile-First Design**: Intelligent layout adaptation for different
screen sizes
- **🎯 Enhanced Typography**: Improved visual hierarchy with larger
titles in side-by-side mode

## 🏗️ Architecture

- **Server-Safe Theme Functions**: Theme configuration accessible on
both server and client
- **SSR-Safe Hooks**: Proper hydration handling for responsive layouts
- **Component Separation**: Clear boundaries between server and client
components
- **Two-Section Layout**: Consistent content structure across all login
pages

## 🔧 Configuration Options

All theme options are configurable via environment variables:

- `NEXT_PUBLIC_THEME_ROUNDNESS`: `edgy` | `mid` | `full`
- `NEXT_PUBLIC_THEME_LAYOUT`: `side-by-side` | `top-to-bottom`
- `NEXT_PUBLIC_THEME_APPEARANCE`: `flat` | `material`
- `NEXT_PUBLIC_THEME_SPACING`: `regular` | `compact`
- `NEXT_PUBLIC_THEME_BACKGROUND_IMAGE`: Custom background image URL

## 📄 Pages Updated

Updated all major login pages to use the new two-section responsive
layout:
- Login name entry
- Password verification
- MFA verification
- User registration
- Account selection
- Device authorization
- Logout confirmation

## 📚 Documentation

- **THEME_ARCHITECTURE.md**: Complete technical documentation of the
theme system
- **THEME_CUSTOMIZATION.md**: User-friendly guide with examples and
troubleshooting

## 🚀 Benefits

- **Better UX**: Responsive design that works seamlessly across all
devices
- **Brand Flexibility**: Easy customization to match any brand identity
- **Maintainable Code**: Clean separation of concerns and
well-documented architecture
- **Future-Proof**: Extensible system for additional theme options

<img width="580" height="680" alt="Screenshot 2025-08-19 at 09 22 23"
src="https://github.com/user-attachments/assets/9de8da37-6d56-4fe9-b337-5d8ad2a3ba59"
/>
<img width="599" height="689" alt="Screenshot 2025-08-19 at 09 23 45"
src="https://github.com/user-attachments/assets/26a30cc7-4017-4f4b-8b87-a49466c42b94"
/>
<img width="595" height="681" alt="Screenshot 2025-08-19 at 09 23 17"
src="https://github.com/user-attachments/assets/a3d31088-4545-4f36-aafe-1aae1253d677"
/>

(cherry picked from commit 434aeb275a)
2025-10-16 08:00:40 +02:00
..