feat: redesign language switcher as dropdown, add cursor pointers

Replace flag-row selector with a dropdown to fix distorted flag icons
and remove the colored ring border. Add cursor-pointer to the language
menu and download submit button.

src/components/LanguageSwitcher.tsx

@@ -1,44 +1,105 @@
 'use client'
 
+import { useEffect, useRef, useState } from 'react'
 import { useLocale } from 'next-intl'
 import { useRouter, usePathname } from '@/navigation'
 import { routing } from '@/i18n/routing'
 
-const FLAG_LABELS: Record<string, string> = {
+const LANGUAGE_LABELS: Record<string, string> = {
   en: 'English',
   fr: 'Français',
   es: 'Español',
   it: 'Italiano',
 }
 
+function Flag({ locale, className }: { locale: string; className?: string }) {
+  return (
+    <img
+      src={`/flags/${locale}.svg`}
+      alt=""
+      className={['w-6 h-4 rounded-sm object-cover shrink-0', className].filter(Boolean).join(' ')}
+    />
+  )
+}
+
+function ChevronIcon() {
+  return (
+    <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" aria-hidden>
+      <polyline points="6 9 12 15 18 9" />
+    </svg>
+  )
+}
+
 export function LanguageSwitcher() {
   const locale = useLocale()
   const router = useRouter()
   const pathname = usePathname()
+  const [open, setOpen] = useState(false)
+  const containerRef = useRef<HTMLDivElement>(null)
+
+  useEffect(() => {
+    if (!open) return
+
+    function handlePointerDown(event: MouseEvent) {
+      if (containerRef.current && !containerRef.current.contains(event.target as Node)) {
+        setOpen(false)
+      }
+    }
+
+    function handleKeyDown(event: KeyboardEvent) {
+      if (event.key === 'Escape') setOpen(false)
+    }
+
+    document.addEventListener('mousedown', handlePointerDown)
+    document.addEventListener('keydown', handleKeyDown)
+    return () => {
+      document.removeEventListener('mousedown', handlePointerDown)
+      document.removeEventListener('keydown', handleKeyDown)
+    }
+  }, [open])
+
+  function selectLocale(loc: string) {
+    setOpen(false)
+    router.replace(pathname, { locale: loc })
+  }
 
   return (
-    <div className="flex items-center gap-1">
-      {routing.locales.map((loc) => (
+    <div ref={containerRef} className="relative">
       <button
-          key={loc}
-          onClick={() => router.replace(pathname, { locale: loc })}
-          aria-label={FLAG_LABELS[loc]}
+        type="button"
+        onClick={() => setOpen((value) => !value)}
+        aria-haspopup="listbox"
+        aria-expanded={open}
+        className="flex items-center gap-2 rounded-lg py-1.5 pl-2 pr-2.5 text-gray-600 dark:text-gray-400 hover:bg-gray-100 dark:hover:bg-slate-800 transition-colors cursor-pointer"
+      >
+        <Flag locale={locale} />
+        <ChevronIcon />
+      </button>
+
+      {open && (
+        <ul
+          role="listbox"
+          className="absolute right-0 top-full mt-2 min-w-[9rem] rounded-lg border border-gray-200 dark:border-slate-800 bg-white dark:bg-slate-900 shadow-lg py-1 z-50"
+        >
+          {routing.locales.map((loc) => (
+            <li key={loc} role="option" aria-selected={loc === locale}>
+              <button
+                type="button"
+                onClick={() => selectLocale(loc)}
                 className={[
-            'rounded transition-opacity focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-violet-500',
+                  'flex w-full items-center gap-2.5 px-3 py-2 text-sm text-left transition-colors cursor-pointer',
                   loc === locale
-              ? 'opacity-100 ring-2 ring-violet-500 ring-offset-1 ring-offset-white dark:ring-offset-slate-950'
-              : 'opacity-40 hover:opacity-70',
+                    ? 'bg-violet-50 dark:bg-violet-500/10 text-violet-600 dark:text-violet-400 font-medium'
+                    : 'text-gray-700 dark:text-gray-300 hover:bg-gray-100 dark:hover:bg-slate-800',
                 ].join(' ')}
               >
-          <img
-            src={`/flags/${loc}.svg`}
-            alt={FLAG_LABELS[loc]}
-            width={28}
-            height={20}
-            className="rounded-sm block"
-          />
+                <Flag locale={loc} />
+                {LANGUAGE_LABELS[loc]}
               </button>
+            </li>
           ))}
+        </ul>
+      )}
     </div>
   )
 }

src/components/SubmitForm.tsx

@@ -81,7 +81,7 @@ export function SubmitForm() {
           <button
             type="submit"
             disabled={loading}
-            className="flex items-center gap-2 px-5 py-3 bg-violet-600 hover:bg-violet-700 dark:bg-violet-500 dark:hover:bg-violet-600 text-white text-sm font-medium transition-colors disabled:opacity-60"
+            className="flex items-center gap-2 px-5 py-3 bg-violet-600 hover:bg-violet-700 dark:bg-violet-500 dark:hover:bg-violet-600 text-white text-sm font-medium transition-colors disabled:opacity-60 cursor-pointer disabled:cursor-not-allowed"
           >
             {loading && <Spinner />}
             {loading ? t('submitting') : t('submit')}