Files
zitadel/apps
e6aaea563e fix(login): migrate legacy Tailwind v4 opacity utilities and fix checkbox contrast color (#12360)
# Which Problems Are Solved

1. **Secondary button hover effect** was rendering a solid white/gray
background instead of a subtle transparent overlay. The legacy
`bg-opacity-*` utility (e.g. `hover:bg-gray-500 hover:bg-opacity-20`)
doesn't compose with `bg-*` in Tailwind v4 — the opacity is ignored,
leaving a solid color. The same issue affected `ring-opacity-*` and
`border-opacity-*` across other components.

2. **Checkbox checkmark color** was hardcoded to white (`fill='white'`
in the SVG), ignoring the theme's primary contrast color. On themes with
a light primary color, the white checkmark was invisible.

# How the Problems Are Solved


1. Migrated all legacy opacity utilities to the Tailwind v4 slash
syntax:
   - `hover:bg-gray-500 hover:bg-opacity-20` → `hover:bg-gray-500/20`
- `ring-primary-light-500 ring-opacity-60` → `ring-primary-light-500/60`
- `focus:ring-opacity-50` + `focus:ring-indigo-200` →
`focus:ring-indigo-200/50`
- Removed redundant `border-opacity-20` where `border-black/10` was
already applied

2. Replaced the static `background-image` checkbox SVG with a
`mask-image` + `::after` pseudo-element approach. The checkmark color
now uses `var(--theme-light-primary-contrast-500)` /
`var(--theme-dark-primary-contrast-500)`, so it dynamically follows the
theme's contrast color.

---------

Co-authored-by: Livio Spring <[email protected]>
2026-07-03 12:39:09 +00:00
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