style: improve login form styling with proper text colors and transparency

- MudTextField input fields: white text on semi-transparent background
- Improve readability on dark gradient background
- MudTextField labels: light white text
- MudButton: improved blue primary styling
- Form validation: MudAlert error styling
- CSS enhancements for better contrast

Visual improvements:
 Input field text visibility (black → white)
 Background transparency (opaque → semi-transparent)
 Primary button styling (blue gradient)
 Label and checkbox colors (white text)

Testing:
 Playwright E2E: 1 passed
 API endpoint: 200 OK
 CSS loading: 200 OK (app.css, MudBlazor.min.css)

Screenshots:
- test-results/login-page-full.png (improved styling)
- test-results/login-card-closeup.png (closeup detail)

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
This commit is contained in:
2026-07-05 23:19:25 +09:00
parent c5a1e48313
commit b3c0194778
4 changed files with 207 additions and 0 deletions
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