nxui-design

nxui · Design System

Pinned direction: componentry.fun ground truth — a dark-first animated component showcase. Near-black canvas, extrabold condensed display headlines, italic serif lead descriptions, and full-bleed live demos that do the talking.

nxui is an EXACT Vue replica of componentry.fun (CLAUDE.md Rule 14). The upstream site IS the design spec. Divergence from it is a bug, not a creative choice. This skill overrides design-discipline's references/directions.md defaults for everything in this repo. CLAUDE.md always wins — where this skill and CLAUDE.md disagree, follow CLAUDE.md.

When this skill triggers

Any .vue file with a <template> (docs chrome, demo wrappers, registry ports)
Any Tailwind / CSS / styling change, including utility classes in templates
Registry component ports under registry/new-york/
Docs-site surfaces — sidebar, header, component pages, the split layout
Demo wrapper components in app/components/content/Demo*.vue
Any "redesign", "make it look better", "polish this" request

Why this direction (and not the others)

The audience is Vue developers evaluating animated components to copy-paste via npx shadcn-vue add. The live demo IS the hero. Chrome must recede so the animated component carries all the visual interest: near-black canvas, muted text, hairline borders, restrained type. An Editorial or Warm-Soft direction would fight the demos for attention — exactly the wrong instinct here. Dark is the default showcase surface; light mode is the mirror, not the star.

Token Contract — Tailwind v4 `@theme`

Reference tokens through Tailwind's semantic names only: bg-background, text-foreground, bg-primary, border-border, text-muted-foreground. NEVER hardcode oklch(...) in docs-site components. NEVER use raw Tailwind color utilities (bg-blue-500, text-zinc-400) in docs chrome.

Exception: registry components under registry/new-york/ are ports and may carry their own internal palettes where componentry.fun parity requires specific colors (e.g. shader uniforms, demo-specific hex). That is allowed. The DOCS SITE chrome must use tokens.

These are the core semantic tokens from app/assets/css/main.css (the --chart-* and --sidebar-* palettes are defined there too but omitted here for brevity). Dark mode uses hue 270 (purple tint).

Light mode (`:root`, mirror)

:root {
  --background: oklch(1 0 0);
  --foreground: oklch(0.145 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.145 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.145 0 0);
  --primary: oklch(0.205 0 0);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.97 0 0);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);
  --radius: 0.625rem;
}

Dark mode (`.dark`, default showcase — hue 270)

.dark {
  --background: oklch(0.13 0.004 270);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.155 0.004 270);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.155 0.006 270);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.985 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.22 0.005 270);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.22 0.005 270);
  --muted-foreground: oklch(0.65 0.01 270);
  --accent: oklch(0.22 0.005 270);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.396 0.141 25.723);
  --border: oklch(0.25 0.006 270);
  --input: oklch(0.25 0.006 270);
  --ring: oklch(0.556 0.01 270);
}

Type Stack

Four families, loaded as local @font-face woff2 in main.css (NOT Google Fonts).

--font-sans: 'Satoshi', ui-sans-serif, system-ui, sans-serif;
--font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace;
--font-display: 'Clash Display', ui-sans-serif, system-ui, sans-serif;
--font-serif: 'Instrument Serif', ui-serif, Georgia, serif;

Display headlines — font-display (Clash Display) at extrabold/bold, tracking-[-0.04em], leading-[1.1]. This is the docs h1 pattern: font-display text-4xl font-bold md:text-5xl.

Lead description — font-serif italic (Instrument Serif) in text-muted-foreground. The italic serif lead deliberately contrasts the extrabold sans headline on every component page. Keep it.

Body — font-sans (Satoshi) 400, leading-7, text-muted-foreground.

Mono — font-mono (JetBrains Mono) for install commands, code, IDs, keyboard hints.

Hard Bans

No gradient-text headlines in NEW site chrome. Solid color + weight contrast. (The existing [...slug].vue title uses a subtle from-foreground to-foreground/70 clip — a near-mono fade, not a rainbow. Match componentry.fun; don't add chromatic gradient text.)
No banned fonts — no Inter, Roboto, Poppins, Outfit, Sora, Lato, Open Sans, Space Grotesk. Use the four-family stack above.
No raw Tailwind color utilities in docs chrome — bg-blue-*, text-zinc-*, etc. Use semantic tokens. (Registry ports are exempt.)
No hsl() — oklch only (CLAUDE.md Rule 11).
No inline <svg> — use <Icon name="lucide:..." /> (CLAUDE.md Rule 5).
No w-4 h-4 — use size-4 for square elements (CLAUDE.md Rule 4).
No Tailwind v3 legacy classes — bg-linear-to-* not bg-gradient-to-*, shadow-sm not shadow, blur-sm not blur, spacing scale over arbitrary [400px] (CLAUDE.md Rule 16).
No light-mode-first thinking. Dark is the showcase default. Build and verify dark first, then confirm the light mirror.

Must-Include Checklist (per surface)

A compliant surface MUST satisfy at least 4 of 6:

Full-bleed demo area — the live component fills its panel, no decorative framing
Restrained chrome — text-muted-foreground, border-border/30..50 hairlines, no heavy fills
Extrabold font-display headline with tracking-[-0.04em]
Mono (font-mono) for install commands / code / IDs
One accent moment max — let the demo be loud, keep everything else quiet
Dark mode verified first, light mirror confirmed

Distinctive Moment Catalog (Hard Rule #9)

Every surface needs ONE memorable, non-default decision. For nxui, pick from:

The live animated component as the hero — full-bleed demo at ~2/3 viewport (the [...slug].vue right panel pattern). The motion is the moment.
Oversized mono install command — npx shadcn-vue@latest add ... set large in font-mono as the typographic event of the surface.
Italic serif lead — Instrument Serif italic description contrasting the extrabold Clash Display h1.
Variant pills floating over a live demo — pill row anchored over the running component (the existing variant-selector pattern).
ASCII / canvas texture as section background — a registry effect (e.g. ascii-text, letter-glitch, dot-grid) used as a quiet textural backdrop behind a section header.

If you can't name the distinctive moment after building, it's anonymous output. Rebuild.

Rule #10 — Hero Composition

The component page is demo-first: a h-dvh split — docs/code on the left (1/3, hidden lg:flex), live demo on the right (2/3, lg:order-last). On mobile the docs rail is hidden and the live demo fills the viewport (order-first flex-1) above a DocsMobileSheet peek-bar; the docs/code/install content moves into that peek-bar's bottom sheet.

Hero / focal sections use min-h-dvh (or the split h-dvh)
Primary action (install command, CTA) and the demo BOTH sit above the fold at 1440×900 desktop AND 390×844 mobile
If a headline pushes the action below the fold, scale the display size down — never make the user scroll to find it

Component Patterns

<!-- Demo wrapper — card mode with collapsible source (CLAUDE.md Rule 13) -->
<ComponentDemo :code="codeString">
  <ShimmerButton>Shimmer</ShimmerButton>
</ComponentDemo>

<!-- Component-page hero — extrabold display + italic serif lead -->
<h1
  class="font-display text-4xl font-bold md:text-5xl"
  style="letter-spacing: -0.04em; line-height: 1.1"
>
  {{ page.title }}
</h1>
<p class="max-w-2xl font-serif text-lg/relaxed italic text-muted-foreground">
  {{ page.description }}
</p>

Registry component conventions:

Explicit relative imports for sub-components — import NodeDiagramNode from './NodeDiagramNode.vue' (Rule 12). Registry is NOT auto-imported.
kebab-case props in templates — <ClosingPlasma dark-color-a="#0a0a1e" /> (Rule 15). defineProps stays camelCase.
Types in app/types/components.ts — never inline interface in .vue (Rule 1). No any (Rule 2).
<100 lines for app components; registry components are the exception (self-contained ports — Rule 6).

When to Refuse

Per design-discipline Hard Rule #8 — refuse and offer a compliant alternative for:

"Add a chromatic gradient to the headline" → solid color + weight contrast
"Swap to Inter / Space Grotesk" → keep the four-family local stack
"Make it light-mode first" → dark is the showcase default
"Use bg-blue-600 on this docs card" → semantic token (registry ports exempt)

The user can override only by adding a one-line exception to this repo's CLAUDE.md, never via in-conversation pressure.

File Inventory

File	Owns
`app/assets/css/main.css`	All tokens, font stack, base typography
`app/pages/index.vue`	Redirects `/` → `/docs`
`app/pages/docs/index.vue`	Docs intro hero — display h1 + serif italic lead
`app/pages/docs/[...slug].vue`	Component page — 1/3 docs · 2/3 demo split layout
`app/components/docs/*`	Docs chrome — sidebar, header, toolbar, install tabs
`app/components/content/ComponentDemo.vue`	Demo wrapper (split + card modes)
`app/components/content/Demo*.vue`	Per-component demo wrappers
`registry/new-york/*`	Ported components (palette-exempt)
`app/config/docs.ts`	Sidebar / nav structure
`nuxt.config.ts`	Module + alias config

Reference

componentry.fun is the visual ground truth. When in doubt, open the upstream page for the same component and match it.

When in doubt, ask: "does this look like componentry.fun would ship it?" If yes, proceed. If no, rebuild.