HeavyLift Styles and Color Tools

Project Overview

HeavyLift is a CSS design system and tooling suite that merges Material Design 3 (MD3) robustness with Liftkit's relativistic sizing and a Tailwind-like developer experience.

Core Pillars:

• Dynamic MD3 Color System: A TypeScript-based generator using the official @material/material-color-utilities to create accessible, perceptual color schemes from any seed color.
• Golden Ratio Sizing: A sizing system based on φ (≈1.618) using em units for natural harmony and effortless scalability.
• Seamless Merge Components: Standardized CSS components that utilize MD3 semantic tokens and Liftkit sizing, offering utility-friendly classes for rapid development.

Documentation

• Styling & Philosophy: Deep dive into the Golden Ratio system and MD3 integration.
• Component Usage: HTML structures for Cards, Buttons, Text Fields, etc.
• Utility Reference: Complete list of layout and helper classes.

Building and Running

Key Commands

• Generate Color Scheme: Creates a new color scheme (JSON and CSS) in generated-colors/.

  npm run generate-colors "#HEX_CODE"

• Scaffold Component: Creates a new CSS component file and registers it in entry.css.

  npm run scaffold "component-name"

• Build CSS: Bundles and minifies global.css and copies assets to dist/.

  npm run build

• Release: Runs all checks, tests, builds the project, and publishes to npm.

  npm run release

• Test: Runs unit tests for the color generator with 100% coverage enforcement.

  npm run test

• Check: Runs Biome linting, formatting, and TypeScript type checking.

  npm run check

Contributing

Adding a Component

To ensure consistency, always use the scaffolding tool when adding new UI components:

npm run scaffold "my-new-component"

This will:

1. Create styles/lib-hl/components/my-new-component.css with a standard boilerplate.
2. Register the component in the CSS layer system.

Standards

• All new components MUST use MD3 semantic tokens (var(--hl-...)).
• Layout MUST rely on Golden Ratio spacing variables (var(--lg), var(--md), etc.).
• Utilities should use dash-based naming (m-md) for consistency.
• Run npm run check before submitting changes to ensure linting and type safety.

Key Files and Directories

• scripts/: Color generation logic and CLI.
• styles/lib-hl/: Core design system source.
  • theme/: Variables and color mappings.
  • base/: Reset and typography.
  • components/: MD3-compliant UI components.
  • utilities/: Helper classes.
• docs/: Philosophical and implementation details.
• dist/: Distribution files (CSS, Fonts, JS).

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Acknowledgments

Special thanks to the teams and contributors whose work forms the foundation of HeavyLift:

• The LiftKit team for their relativistic sizing philosophy.
• The Material Design contributors for the MD3 specifications and color utilities.
• The Tailwind CSS team for the utility-first developer experience inspiration.