Add feedback form and webhook

frontend/app/globals.css

@@ -162,6 +162,14 @@ body {
   text-align: center;
 }
 
+.header-actions .header-cta {
+  background: linear-gradient(120deg, rgba(255, 107, 43, 0.95), rgba(255, 168, 75, 0.95));
+  color: #151515;
+  border: 1px solid rgba(255, 140, 60, 0.7);
+  box-shadow: 0 12px 24px rgba(255, 107, 43, 0.35);
+  font-weight: 700;
+}
+
 .signed-in {
   font-size: 12px;
   text-transform: uppercase;
@@ -332,6 +340,17 @@ select option {
   color: var(--ink);
 }
 
+textarea {
+  padding: 14px 16px;
+  border-radius: 16px;
+  border: 1px solid var(--border);
+  font-size: 16px;
+  background: var(--input-bg);
+  color: var(--input-ink);
+  font-family: inherit;
+  resize: vertical;
+}
+
 button {
   padding: 12px 18px;
   border-radius: 999px;