Inline Validation

Create a Inline Validation pattern for an AI-generated interface. It should help with explain a form problem beside the field. Use a restrained black, white, and gray visual style, strong hierarchy, and product-grade spacing. The interaction should feel specific, practical, and easy to scan.

Do not make the inline validation flashy, noisy, over-animated, or decorative for its own sake. Avoid random glow, heavy gradients, excessive borders, oversized type, unclear hierarchy, and generic SaaS filler.

{
  "id": "inline-validation",
  "category": "interactions",
  "trigger": "invalid input",
  "target": "inline validation",
  "duration": "160ms",
  "easing": "ease-out",
  "feeling": [
    "specific",
    "practical",
    "precise"
  ],
  "palette": [
    "black",
    "white",
    "gray"
  ]
}