Upgrade to Vite 8 and Tailwind CSS 4 (#595)

- Vite 6 → 8 (Rolldown bundler), laravel-vite-plugin 1 → 3, @vitejs/plugin-vue 5 → 6
- Tailwind CSS 3 → 4 with CSS-based config (@theme, @plugin, @utility)
- Add @tailwindcss/vite plugin, remove postcss/autoprefixer/sass
- Convert SCSS files to plain CSS (resources/sass → resources/css)
- Migrate tailwind.config.js to CSS @theme directives
- Rename deprecated utility classes (shadow-sm→shadow-xs, outline-none→outline-hidden,
  rounded-sm→rounded-xs, bg-gradient-to→bg-linear-to, ring→ring-3)
- Migrate opacity utilities to color modifiers (bg-opacity, text-opacity,
  border-opacity, ring-opacity → color/N syntax)
- Update primary color CSS vars to full rgb() values for TW4 color-mix()
- Fix border-l color specificity for sidebar navigation (TW4 default border
  color changed from gray-200 to currentColor)
- Fix invalid border color classes (border-grey-light, border-modal-bg, border--200)
- Add @reference directive for @apply in Vue component style blocks
- Convert Vue component <style lang="scss"> blocks to plain CSS

resources/scripts/components/base/BaseTimePicker.vue

@@ -86,7 +86,7 @@ const props = defineProps({
   defaultInputClass: {
     type: String,
     default:
-      'font-base pl-8 py-2 outline-none focus:ring-primary-400 focus:outline-none focus:border-primary-400 block w-full sm:text-sm border-gray-300 rounded-md text-black',
+      'font-base pl-8 py-2 outline-hidden focus:ring-primary-400 focus:outline-hidden focus:border-primary-400 block w-full sm:text-sm border-gray-300 rounded-md text-black',
   },
 })
 
@@ -130,7 +130,7 @@ const inputInvalidClass = computed(() => {
 
 const inputDisabledClass = computed(() => {
   if (props.disabled) {
-    return 'border border-solid rounded-md outline-none input-field box-border-2 base-date-picker-input placeholder-gray-400 bg-gray-300 text-gray-600 border-gray-300'
+    return 'border border-solid rounded-md outline-hidden input-field box-border-2 base-date-picker-input placeholder-gray-400 bg-gray-300 text-gray-600 border-gray-300'
   }
 
   return ''