- Add new utility classes: ml-is-hidden, ml-is-visible, ml-is-inline-flex - Add ml-is-muted and ml-is-error for text color states - Add ml-is-success-action for success button styling - Add ml-icon-img for icon vertical alignment - Replace style.display = 'block/none' with classList toggles in linker.js - Update getIconHtml to use ml-icon-img class instead of inline styles