CSS Preprocessor Language

A backwards-compatible CSS preprocessor language extension that adds powerful features like variables, mixins, nesting, functions, and operations to standard CSS, enabling developers to write more maintainable and reusable stylesheets. Variables allow defining color palettes, spacing scales, and typography sizes in one place, then referencing them throughout stylesheets with simple references that can be overridden per-component or per-theme. Mixins enable encapsulating groups of CSS declarations into reusable blocks that accept parameters, supporting patterns like generating cross-browser gradients, calculating fluid typography with clamp functions, and producing clearfix solutions. Nesting syntax mirrors the HTML structure of components, eliminating repetitive parent selectors and making stylesheet organization match DOM hierarchy for improved readability. The language includes over 60 built-in functions for color manipulation including lighten, darken, saturate, desaturate, fadein, fadeout, mix, and contrast, plus mathematical operations for unit conversion, string manipulation, and list processing. The compiler runs in multiple environments: as a Node.js module for build pipeline integration with Webpack, Vite, or Gulp, as a browser-side JavaScript include for prototyping, and via command-line tools for batch processing. The platform supports importing other stylesheets, defining guards for conditional mixin application, and using maps for structured data organization. Output can be minified and autoprefixed in production, with source maps generated for debugging.