feat(core): eliminate global styles - #2632
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This pull request refactors the styling architecture of the @siemens/ix package by introducing new foundation and legacy utility CSS entry points (siemens-ix-foundation.css and siemens-ix-legacy-utilities.css) to facilitate incremental migration. It also modularizes component styling by moving token defaults from the global theme output into dedicated component *.vars.scss files using local --ix-* custom properties. Additionally, a test button has been added to the ix-playground component. No review comments were provided, so I have no feedback to offer.
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Summary
Migrate Siemens Industrial Experience (iX) to the Siemens Design Language (SDL) foundation, specifically SI Theme 6 system and reference tokens, while improving interoperability with host applications.
This resolves #1398 by preventing the default iX stylesheet from applying the previous native reset and form-control styling across the entire page.
This is Phase 1: foundation tokens, theming architecture, and opt-in global CSS. It does not claim complete SDL/Figma compliance for every component and visual state.
EIX-3
EIX-10
EIX-69
EIX-184
Approach
--si-sys-*and--si-ref-*. The previous--theme-si-*aliases are no longer emitted.--ix-*properties mapped to SI Theme 6 system tokens.--theme-<component>-*aliases. These aliases no longer control migrated iX components.iconColor,itemColor, andNotificationColornow require complete custom-property names, for example--si-sys-text-danger.CSS entry points
@siemens/ix/css/default.css@siemens/ix/css/foundation.css@siemens/ix/css/reset.css@siemens/ix/css/base.css@siemens/ix/css/scrollbar.css[data-ix-scrollbars]@siemens/ix/css/utilities.css@siemens/ix/css/globals.css@siemens/ix/css/legacy.cssApplications that require the previous aggregate behavior can temporarily use:
Included in this PR
--theme-si-*tokens to--si-sys-*and--si-ref-*.--ix-*properties and SI Theme 6 mappings.--theme-<component>-*aliases from standard theme output.BREAKING_CHANGES/v6.md.@siemens/ix,@siemens/ix-aggrid, and@siemens/ix-echarts.--si-sys-background-activeis emitted by the classic themes.Follow-ups
legacy.css, or document an explicit exception.--ix-*mapping against SDL/Figma roles beyond snapshot coverage.Breaking changes
--theme-<component>-*aliases are removed from standard theme output.--ix-*properties.--.getComputedCSSPropertyin@siemens/ix-echartsno longer adds a--theme-prefix.See
BREAKING_CHANGES/v6.mdfor migration examples and replacement entry points.Release impact
@siemens/ix@siemens/ix-echarts@siemens/ix-aggridDefinition of done for this phase
This phase is ready to merge when:
@siemens/ix/css/default.cssthemes iX components without applying the previous native reset and form-control styling.--theme-si-*properties.--ix-*properties.Out of scope
This PR does not claim:
--theme-*common token.