auto-claude: subtask-1-1 - Add character counter state and logic to ContactForm

- Added MAX_MESSAGE_LENGTH constant (1000 characters)
- Added messageLength calculation from formData.message
- Implemented character counter display below message textarea
- Added color feedback: red (over limit), yellow (80%+), gray (normal)
- Counter updates in real-time as user types

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/components/contact/ContactForm.tsx

@@ -15,6 +15,8 @@ interface FormData {
 export function ContactForm() {
   const t = useTranslations('pages.contact');
 
+  const MAX_MESSAGE_LENGTH = 1000;
+
   const [isSubmitting, setIsSubmitting] = useState(false);
   const [submitStatus, setSubmitStatus] = useState<'idle' | 'success' | 'error'>('idle');
   const [formData, setFormData] = useState<FormData>({
@@ -24,6 +26,8 @@ export function ContactForm() {
   });
   const [errors, setErrors] = useState<Partial<FormData>>({});
 
+  const messageLength = formData.message.length;
+
   const validateForm = () => {
     const newErrors: Partial<FormData> = {};
 
@@ -276,6 +280,19 @@ export function ContactForm() {
                     {errors.message && (
                       <p className="text-sm text-red-400">{errors.message}</p>
                     )}
+                    <div className="flex justify-end">
+                      <p
+                        className={`text-xs transition-colors ${
+                          messageLength > MAX_MESSAGE_LENGTH
+                            ? 'text-red-500'
+                            : messageLength >= MAX_MESSAGE_LENGTH * 0.8
+                            ? 'text-yellow-500'
+                            : 'text-zinc-500'
+                        }`}
+                      >
+                        {messageLength} / {MAX_MESSAGE_LENGTH} characters
+                      </p>
+                    </div>
                   </div>
                 </div>