Form error messages are inline and descriptive

A top-of-form banner saying "There was an error" forces visitors to re-scan every field to find what went wrong, and many simply abandon instead. Inline errors rendered directly under the offending field tell the visitor exactly what to fix and where — a fundamental usability affordance that is also a WCAG 2.2 SC 3.3.1 (Error Identification) requirement for accessible form validation, meaning the absence of inline errors creates both a conversion drag and a compliance gap.

Render validation errors inline, adjacent to the specific field that caused them, with a descriptive message ("Email address is invalid") rather than a generic toast. Adopt react-hook-form with zod resolvers and the shadcn Form primitives in components/ui/form.tsx:

<FormField
  name="email"
  render={({ field }) => (
    <FormItem>
      <FormLabel>Email</FormLabel>
      <FormControl>
        <Input {...field} />
      </FormControl>
      <FormMessage />
    </FormItem>
  )}
/>

• ID: marketing-conversion.form-optimization.form-error-feedback

• Severity: medium

• What to look for: Examine form components for error handling patterns. Check: (1) Where error messages appear — are they inline (adjacent to the specific field that errored) or only as a banner/toast at the top of the form? (2) Are error messages descriptive ("Email address is invalid" or "Password must be at least 8 characters") versus generic ("There was an error" or "Please fix the errors above")? (3) Check for use of client-side form validation libraries (react-hook-form, formik, zod with form integration) which typically implement inline error patterns. Look at the form component's error rendering JSX.

• Pass criteria: Count all form components with validation and check each for inline error display. Form components render error messages inline — adjacent to the specific field that caused the error. At least 80% of forms must display field-level errors. Report the ratio: "X of Y forms display inline field-level errors."

• Cross-reference: For inline validation timing (blur/change vs. submit-only), see the inline-validation check in this audit.

• Fail criteria: All errors, including field-level validation errors, display only as a banner at the top of the form with no inline field-level error messages. OR error messages are generic ("An error occurred") for all scenarios.

• Skip (N/A) when: No forms found in the marketing or conversion pages.

• Detail on fail: Describe the error rendering pattern found. Example: "SignupForm component renders a single error toast on submit failure — no inline field-level error messages. Email validation error reads 'Please check your inputs' without specifying which field.".

• Remediation: Inline error messages tell users exactly what to fix and where. A top-banner error makes users re-scan the form to find the problem.

  With react-hook-form and zod:

  <FormField
    name="email"
    render={({ field, fieldState }) => (
      <FormItem>
        <FormLabel>Email</FormLabel>
        <FormControl>
          <Input {...field} />
        </FormControl>
        {/* Inline error message */}
        <FormMessage />  {/* Renders fieldState.error.message */}
      </FormItem>
    )}
  />