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Add dark mode with toggle and localStorage persistence

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Uses Tailwind v4 class-based dark mode with a Stimulus controller for
toggling. Respects prefers-color-scheme as default, prevents FOUC with
an inline script, and persists the user's choice in localStorage. All
views updated with dark: variants for backgrounds, text, borders,
badges, buttons, and form inputs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Dan Milne
2026-03-22 00:37:58 +11:00
parent 43958f50ce
commit 3d98261a51
38 changed files with 744 additions and 636 deletions
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32
app/views/shared/_flash.html.erb
View File

@@ -8,34 +8,34 @@
# Map flash types to styling
case type.to_s
when 'notice'
bg_class = 'bg-green-50'
text_class = 'text-green-800'
icon_class = 'text-green-400'
bg_class = 'bg-green-50 dark:bg-green-900/30'
text_class = 'text-green-800 dark:text-green-200'
icon_class = 'text-green-400 dark:text-green-300'
icon_path = 'M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z'
auto_dismiss = true
when 'alert', 'error'
bg_class = 'bg-red-50'
text_class = 'text-red-800'
icon_class = 'text-red-400'
bg_class = 'bg-red-50 dark:bg-red-900/30'
text_class = 'text-red-800 dark:text-red-200'
icon_class = 'text-red-400 dark:text-red-300'
icon_path = 'M10 18a8 8 0 100-16 8 8 0 000 16zM8.707 7.293a1 1 0 00-1.414 1.414L8.586 10l-1.293 1.293a1 1 0 101.414 1.414L10 11.414l1.293 1.293a1 1 0 001.414-1.414L11.414 10l1.293-1.293a1 1 0 00-1.414-1.414L10 8.586 8.707 7.293z'
auto_dismiss = false
when 'warning'
bg_class = 'bg-yellow-50'
text_class = 'text-yellow-800'
icon_class = 'text-yellow-400'
bg_class = 'bg-yellow-50 dark:bg-yellow-900/30'
text_class = 'text-yellow-800 dark:text-yellow-200'
icon_class = 'text-yellow-400 dark:text-yellow-300'
icon_path = 'M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z'
auto_dismiss = false
when 'info'
bg_class = 'bg-blue-50'
text_class = 'text-blue-800'
icon_class = 'text-blue-400'
bg_class = 'bg-blue-50 dark:bg-blue-900/30'
text_class = 'text-blue-800 dark:text-blue-200'
icon_class = 'text-blue-400 dark:text-blue-300'
icon_path = 'M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z'
auto_dismiss = true
else
# Default styling for unknown types
bg_class = 'bg-gray-50'
text_class = 'text-gray-800'
icon_class = 'text-gray-400'
bg_class = 'bg-gray-50 dark:bg-gray-800'
text_class = 'text-gray-800 dark:text-gray-200'
icon_class = 'text-gray-400 dark:text-gray-500'
icon_path = 'M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7-4a1 1 0 11-2 0 1 1 0 012 0zM9 9a1 1 0 000 2v3a1 1 0 001 1h1a1 1 0 100-2v-3a1 1 0 00-1-1H9z'
auto_dismiss = false
end
@@ -60,7 +60,7 @@
<div class="-mx-1.5 -my-1.5">
<button type="button"
data-action="click->flash#dismiss"
class="inline-flex rounded-md <%= bg_class %> p-1.5 <%= icon_class %> hover:bg-opacity-70 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-<%= bg_class.gsub('bg-', '') %>"
class="inline-flex rounded-md <%= bg_class %> p-1.5 <%= icon_class %> hover:bg-opacity-70 focus:outline-none focus:ring-2 focus:ring-offset-2"
aria-label="Dismiss">
<span class="sr-only">Dismiss</span>
<svg class="h-5 w-5" viewBox="0 0 20 20" fill="currentColor">