fix: Improve UX with searchable selects and higher modal z-index

✅ Issue 1: Modal Z-Index Fixed
- Increased dialog z-index: z-[9999] → z-[99999]
- Now properly appears above fullscreen mode (z-50)

✅ Issue 2: Searchable Select for Large Lists
- Replaced Select with SearchableSelect for:
  - Countries (200+ options)
  - Currencies (100+ options)
  - Timezones (400+ options)
- Users can now type to search instead of scrolling
- Better UX for large datasets

✅ Issue 3: Input Type Support
- Input component already supports type attribute
- No changes needed (already working)

✅ Issue 4: Timezone Options Fixed
- Replaced optgroup (not supported) with flat list
- SearchableSelect handles filtering by continent name
- Shows: 'Asia/Jakarta (UTC+7:00)'
- Search includes continent, city, and offset

📊 Result:
- ✅ Modal always on top
- ✅ Easy search for countries/currencies/timezones
- ✅ No more scrolling through hundreds of options
- ✅ Better accessibility

Addresses user feedback issues 1-4

admin-spa/src/components/ui/dialog.tsx

@@ -19,7 +19,7 @@ const DialogOverlay = React.forwardRef<
   <DialogPrimitive.Overlay
     ref={ref}
     className={cn(
-      "fixed inset-0 z-[9999] bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      "fixed inset-0 z-[99999] bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
       className
     )}
     {...props}
@@ -36,7 +36,7 @@ const DialogContent = React.forwardRef<
     <DialogPrimitive.Content
       ref={ref}
       className={cn(
-        "fixed left-[50%] top-[50%] z-[9999] grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+        "fixed left-[50%] top-[50%] z-[99999] grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
         className
       )}
       {...props}

admin-spa/src/routes/Settings/Store.tsx

@@ -6,6 +6,7 @@ import { SettingsCard } from './components/SettingsCard';
 import { SettingsSection } from './components/SettingsSection';
 import { Input } from '@/components/ui/input';
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
+import { SearchableSelect } from '@/components/ui/searchable-select';
 import { toast } from 'sonner';
 
 interface StoreSettings {
@@ -234,18 +235,16 @@ export default function StoreDetailsPage() {
         description="Used for shipping origin, invoices, and tax calculations"
       >
         <SettingsSection label="Country/Region" required htmlFor="country">
-          <Select value={settings.country} onValueChange={(v) => updateSetting('country', v)}>
+          <SearchableSelect
-            <SelectTrigger id="country">
+            value={settings.country}
-              <SelectValue />
+            onChange={(v) => updateSetting('country', v)}
-            </SelectTrigger>
+            options={countries.map((country: { code: string; name: string }) => ({
-            <SelectContent>
+              value: country.code,
-              {countries.map((country: { code: string; name: string }) => (
+              label: country.name,
-                <SelectItem key={country.code} value={country.code}>
+              searchText: country.name,
-                  {country.name}
+            }))}
-                </SelectItem>
+            placeholder="Select country..."
-              ))}
+          />
-            </SelectContent>
-          </Select>
         </SettingsSection>
 
         <SettingsSection label="Street address" htmlFor="address">
@@ -293,18 +292,16 @@ export default function StoreDetailsPage() {
         description="How prices are displayed in your store"
       >
         <SettingsSection label="Currency" required htmlFor="currency">
-          <Select value={settings.currency} onValueChange={(v) => updateSetting('currency', v)}>
+          <SearchableSelect
-            <SelectTrigger id="currency">
+            value={settings.currency}
-              <SelectValue />
+            onChange={(v) => updateSetting('currency', v)}
-            </SelectTrigger>
+            options={currencies.map((currency: { code: string; name: string; symbol: string }) => ({
-            <SelectContent>
+              value: currency.code,
-              {currencies.map((currency: { code: string; name: string; symbol: string }) => (
+              label: `${currency.name} (${currency.symbol})`,
-                <SelectItem key={currency.code} value={currency.code}>
+              searchText: `${currency.code} ${currency.name} ${currency.symbol}`,
-                  {currency.name} ({currency.symbol})
+            }))}
-                </SelectItem>
+            placeholder="Select currency..."
-              ))}
+          />
-            </SelectContent>
-          </Select>
         </SettingsSection>
 
         <SettingsSection label="Currency position" htmlFor="currencyPosition">
@@ -377,22 +374,18 @@ export default function StoreDetailsPage() {
         description="Timezone and measurement units"
       >
         <SettingsSection label="Timezone" htmlFor="timezone">
-          <Select value={settings.timezone} onValueChange={(v) => updateSetting('timezone', v)}>
+          <SearchableSelect
-            <SelectTrigger id="timezone">
+            value={settings.timezone}
-              <SelectValue />
+            onChange={(v) => updateSetting('timezone', v)}
-            </SelectTrigger>
+            options={Object.entries(timezones).flatMap(([continent, tzList]: [string, any]) =>
-            <SelectContent>
+              tzList.map((tz: { value: string; label: string; offset: string }) => ({
-              {Object.entries(timezones).map(([continent, tzList]: [string, any]) => (
+                value: tz.value,
-                <optgroup key={continent} label={continent}>
+                label: `${tz.label} (${tz.offset})`,
-                  {tzList.map((tz: { value: string; label: string; offset: string }) => (
+                searchText: `${continent} ${tz.label} ${tz.offset}`,
-                    <SelectItem key={tz.value} value={tz.value}>
+              }))
-                      {tz.label} ({tz.offset})
+            )}
-                    </SelectItem>
+            placeholder="Select timezone..."
-                  ))}
+          />
-                </optgroup>
-              ))}
-            </SelectContent>
-          </Select>
         </SettingsSection>
 
         <div className="grid grid-cols-1 md:grid-cols-2 gap-4">