The accent color HSL components (--t-accent-h, --t-accent-s, --t-accent-l) were hardcoded in :root, which prevented the dynamically generated values from the CSS generator from taking effect properly.
Now the HSL components are only set by the CSS generator in .preview-frame, and theme-semantic.css only defines the derived colors that use those variables.
Also wrapped accent color inputs in a form element as required by Phoenix LiveView for phx-change events.
Verified that changing presets properly updates button colors (e.g., studio preset → blue buttons).
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>