@phcdevworks/spectre-ui

Framework-agnostic styling layer that powers Spectre Blocks, Spectre Astro, Spectre 11ty, and every Spectre integration.

📋 View Roadmap | 🤝 Contributing Guide | 📝 Changelog

Overview

@phcdevworks/spectre-ui is the core styling layer of the Spectre design system. It consumes @phcdevworks/spectre-tokens and ships precompiled CSS, type-safe recipe helpers, and a Tailwind preset so downstream frameworks can stay in sync without duplicating logic. One design system runs the entire Spectre Suite; this package handles the implementation.

• ✅ Token-powered styles built on @phcdevworks/spectre-tokens
• ✅ Precompiled base, components, and utilities CSS bundles
• ✅ Type-safe recipes (getButtonClasses, getCardClasses, getInputClasses)
• ✅ Tailwind preset + helpers to generate a Spectre theme
• ✅ Framework-agnostic: works anywhere CSS and JavaScript run

Installation

npm install @phcdevworks/spectre-ui

Usage

1. Import Spectre CSS

Import the CSS bundles anywhere in your app, layout, or build pipeline.

@import "@phcdevworks/spectre-ui/base.css";
@import "@phcdevworks/spectre-ui/components.css";
@import "@phcdevworks/spectre-ui/utilities.css";

2. Tailwind integration

Spectre ships an opinionated Tailwind preset that mirrors the design tokens exactly.

// tailwind.config.ts
import { spectrePreset } from "@phcdevworks/spectre-ui";

export default {
  content: ["./src/**/*.{js,ts,jsx,tsx,astro}"],
  presets: [spectrePreset],
};

Works with Tailwind 3.x and 4.x through the classic config API.

3. Use Spectre recipes

Recipes wrap Spectre's class combinations so every framework composes styles consistently.

import {
  getButtonClasses,
  getCardClasses,
  getInputClasses,
} from "@phcdevworks/spectre-ui";

const buttonClasses = getButtonClasses({
  variant: "primary",
  size: "lg",
  fullWidth: true,
});
// "sp-btn sp-btn--primary sp-btn--lg sp-btn--full"

const cardClasses = getCardClasses({ variant: "outline", padded: true });
// "sp-card sp-card--outline sp-card--padded"

const inputClasses = getInputClasses({
  state: "error",
  size: "sm",
  fullWidth: true,
});
// "sp-input sp-input--error sp-input--sm sp-input--full"

Component Surfaces

Button variants

getButtonClasses({ variant: "primary" }); // CTA baseline
getButtonClasses({ variant: "secondary" }); // Outlined
getButtonClasses({ variant: "ghost" }); // Low-emphasis
getButtonClasses({ variant: "danger" }); // Destructive

Each variant ships with full state coverage: default, hover, active, disabled, and tone modifiers (success, warning, danger).

.cta-button {
  background: var(--sp-component-button-primary-bg);
  color: var(--sp-component-button-primary-text);
}
.cta-button:hover {
  background: var(--sp-component-button-primary-bg-hover);
}

Input states

getInputClasses({ state: "default" });
getInputClasses({ state: "error" });
getInputClasses({ state: "success" });

.input:focus {
  border-color: var(--sp-component-input-border-focus);
  outline: var(--sp-focus-ring-width) var(--sp-focus-ring-style)
    var(--sp-component-input-ring-focus);
}
.input.error {
  border-color: var(--sp-component-input-border-error);
  background: var(--sp-component-input-bg-error);
}

Card variants

getCardClasses({ variant: "elevated" }); // Default shadow
getCardClasses({ variant: "outline" }); // Bordered
getCardClasses({ variant: "ghost" }); // Transparent

Surface & Typography Roles

Spectre exposes semantic layers that decouple structural styles from raw palette values. Override these roles at any scope (root, layout, or component wrapper) to restyle whole experiences without editing CSS.

• surface.page, surface.card, surface.input, surface.overlay: semantic backgrounds for the app canvas, containers/tiles, form fields, and modal/dropdown layers.
• text.onPage.* vs text.onSurface.*: use onPage for copy sitting directly on the page canvas; use onSurface for text inside cards, tiles, inputs, overlays, and other elevated surfaces.
• component.card.text/textMuted, component.input.text/placeholder, and component.button.textDefault/textOnPrimary alias the underlying text.onSurface roles to keep component defaults aligned.

Tailwind utilities

The Tailwind preset exposes semantic helpers:

• bg-surface-page, bg-surface-card, bg-surface-input
• text-on-page, text-on-surface

Use them to mix utility-first UIs with Spectre's semantic palette.

Mode infrastructure

Spectre reserves the data-sp-mode attribute (or any wrapper selector) for future automatic light/dark modes. Override the semantic variables inside those selectors today and you're ready for upcoming multi-mode token drops.

Usage Examples

Surface-aware components

.hero-panel {
  --sp-surface-card: var(--sp-color-neutral-900);
  --sp-text-on-surface-default: var(--sp-color-neutral-50);
  --sp-text-on-surface-muted: var(--sp-color-neutral-200);
  --sp-component-button-primary-bg: var(--sp-color-accent-400);
  --sp-component-button-primary-text: var(--sp-color-neutral-900);
  --sp-component-card-border: transparent;
  --sp-component-input-border: var(--sp-color-accent-400);
}

<section class="hero-panel">
  <button class="sp-btn sp-btn--primary">Surface Button</button>
  <div class="sp-card sp-card--elevated">
    <p>Cards inherit the contextual surface + text roles automatically.</p>
  </div>
  <input class="sp-input" placeholder="Email address" />
</section>

Tailwind semantic utilities

export function SignupCard() {
  return (
    <div className="bg-surface-card text-on-surface sp-card sp-card--padded">
      <h2 className="text-on-page font-semibold">Join the beta</h2>
      <input className="sp-input mt-4" placeholder="you@spectre.dev" />
      <button className="sp-btn sp-btn--primary mt-4">Request access</button>
    </div>
  );
}

CSS Path Constants

Utilities for referencing the published CSS files programmatically:

import {
  spectreBaseStylesPath,
  spectreComponentsStylesPath,
  spectreUtilitiesStylesPath,
  spectreStyles,
} from "@phcdevworks/spectre-ui";

// spectreStyles.base        → "@phcdevworks/spectre-ui/base.css"
// spectreStyles.components  → "@phcdevworks/spectre-ui/components.css"
// spectreStyles.utilities   → "@phcdevworks/spectre-ui/utilities.css"

Repository Layout

Folder	Responsibility
src/	TypeScript source: recipes, Tailwind preset, token re-exports, CSS constants.
src/styles/	Raw CSS files (base.css, components.css, utilities.css) copied to dist/ during build.
dist/	Generated artifacts: index.js, index.cjs, index.d.ts, and CSS files. Regenerated via npm run build.

Designers update tokens in @phcdevworks/spectre-tokens. Engineering evolves recipes, presets, and CSS in this package.

Build & Release

npm run build

tsup compiles the TypeScript library (ESM, CJS, .d.ts) and copies CSS files to dist/. Because dist/ is generated, releases are reproducible from src/.

For release history and version notes, see the Changelog.

Design Principles

1. Single source of truth – All Spectre products consume these styles and recipes.
2. No style duplication – Downstream frameworks never re-encode Spectre logic.
3. Token-first – The Tailwind preset, CSS, and recipes are generated from tokens.
4. Framework agnostic – Works with any bundler, CMS, or runtime.
5. Type-safe ergonomics – Every helper exports strict types for confident usage.

TypeScript Support

Type definitions are bundled automatically:

import type {
  SpectreTokens,
  SpectreTailwindTheme,
  ButtonVariant,
  InputState,
  CardVariant,
  ButtonRecipeOptions,
  CardRecipeOptions,
  InputRecipeOptions,
} from "@phcdevworks/spectre-ui";

Part of the Spectre Suite

• Spectre Tokens – Design-token foundation
• Spectre UI – Core styling layer (this package)
• Spectre Blocks – WordPress block library
• Spectre Astro – Astro integration
• Spectre 11ty – Eleventy integration

For the project's future direction, see the Roadmap.

Contributing

Issues and pull requests are welcome. If you are proposing style or recipe changes, update src/ and include regenerated builds.

For detailed contribution guidelines, see CONTRIBUTING.md.

License

MIT © PHCDevworks — See LICENSE for details.

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❤️ Support Spectre

If Spectre UI helps your workflow, consider sponsoring:

• GitHub Sponsors
• Buy Me a Coffee