feat: enhance dialog components with overflow handling and update placeholder text for consistency

src/components/CreateStaffDialog.js

@@ -106,7 +106,7 @@ const CreateStaffDialog = ({ open, onOpenChange, onSuccess }) => {
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="sm:max-w-[600px] rounded-2xl">
+      <DialogContent className="sm:max-w-[600px] rounded-2xl overflow-y-auto max-h-[90vh]">
         <DialogHeader>
           <DialogTitle className="text-2xl text-[var(--purple-ink)] flex items-center gap-2" style={{ fontFamily: "'Inter', sans-serif" }}>
             <UserPlus className="h-6 w-6" />
@@ -165,7 +165,7 @@ const CreateStaffDialog = ({ open, onOpenChange, onSuccess }) => {
                 value={formData.first_name}
                 onChange={(e) => handleChange('first_name', e.target.value)}
                 className="rounded-xl border-2 border-[var(--neutral-800)] focus:border-brand-purple "
-                placeholder="John"
+                placeholder="Jane"
               />
               {errors.first_name && (
                 <p className="text-sm text-red-500">{errors.first_name}</p>