falleco/dotfiles/design-taste-frontend

tasteskill: Anti-Slop Frontend Skill

Landing pages, portfolios, and redesigns. Not dashboards, not data tables, not multi-step product UI.

Every rule below is contextual. None of it fires automatically. First read the brief, then pull only what fits.

0. BRIEF INFERENCE (Read the Room Before Anything Else)

Before touching code or tweaking dials, infer what the user actually wants. Most LLM design output is bad because the model jumps to a default aesthetic instead of reading the room.

0.A Read these signals first

1. Page kind - landing (SaaS / consumer / agency / event), portfolio (dev / designer / creative studio), redesign (preserve vs overhaul), editorial / blog.
2. Vibe words the user used - "minimalist", "calm", "Linear-style", "Awwwards", "brutalist", "premium consumer", "Apple-y", "playful", "serious B2B", "editorial", "agency-y", "glassy", "dark tech".
3. Reference signals - URLs they linked, screenshots they pasted, products they named, brands they're competing with.
4. Audience - B2B procurement panel vs. design-conscious consumer vs. recruiter scanning a portfolio. The audience picks the aesthetic, not your taste.
5. Brand assets that already exist - logo, color, type, photography. For redesigns, these are starting material, not optional input (see Section 11).
6. Quiet constraints - accessibility-first audiences, public-sector, regulated industries, trust-first commerce, kids' products. These constraints OVERRIDE aesthetic preference.

0.B Output a one-line "Design Read" before generating

Before any code, state in one line: "Reading this as: \<page kind> for \<audience>, with a \<vibe> language, leaning toward \<design system or aesthetic family>."

Example reads:

• "Reading this as: B2B SaaS landing for technical buyers, with a Linear-style minimalist language, leaning toward Tailwind utilities + Geist + restrained motion."
• "Reading this as: solo designer portfolio for hiring managers, with an editorial / kinetic-type language, leaning toward native CSS + scroll-driven animation + custom typography."
• "Reading this as: redesign of a public-sector service site, with a trust-first language, leaning toward GOV.UK Frontend or USWDS."

0.C If the brief is ambiguous, ask one question, do not guess

Ask exactly one clarifying question - never a multi-question dump - and only when the design read genuinely diverges. Example: "Should this feel closer to Linear-clean or Awwwards-experimental?"

If you can confidently infer from context, do not ask. Just declare the design read and proceed.

0.D Anti-Default Discipline

Do not default to: AI-purple gradients, centered hero over dark mesh, three equal feature cards, generic glassmorphism on everything, infinite-loop micro-animations everywhere, Inter + slate-900. These are the LLM defaults. Reach past them deliberately based on the design read.

1. THE THREE DIALS (Core Configuration)

After the design read, set three dials. Every layout, motion, and density decision below is gated by these.

• `DESIGN_VARIANCE: 8` - 1 = Perfect Symmetry, 10 = Artsy Chaos
• `MOTION_INTENSITY: 6` - 1 = Static, 10 = Cinematic / Physics
• `VISUAL_DENSITY: 4` - 1 = Art Gallery / Airy, 10 = Cockpit / Packed Data

Baseline: 8 / 6 / 4. Use these unless the design read overrides them. Do not ask the user to edit this file - overrides happen conversationally.

1.A Dial Inference (design read → dial values)

1.B Use-Case Presets

1.C How the Dials Drive Output

Use these (or user-overridden values) as global variables. Cross-references throughout this document refer to these exact variable names - never invent aliases like LAYOUT_VARIANCE or ANIM_LEVEL.

2. BRIEF → DESIGN SYSTEM MAP

Once you have the design read (Section 0) and dials (Section 1), pick the right foundation. Do not invent CSS for things that have an official package. Do not pretend an aesthetic trend is an official system.

2.A When to reach for a real design system (use official packages)

Honesty rule: if the brief reads as one of the systems above, install and use the official package. Do not recreate its CSS by hand. Do not import a system's tokens but then override 90% of them.

One system per project. Do not mix Fluent React with Carbon in the same tree. Do not import shadcn/ui components into a Material 3 app.

2.B When the brief is an aesthetic, not a system

For these directions, there is no single official package. Build with native CSS + Tailwind + a maintained component library. Be honest in code comments about what is borrowed inspiration vs. official material.

3. DEFAULT ARCHITECTURE & CONVENTIONS

Unless the design read picks a real design system (Section 2.A), these are the defaults:

3.A Stack

• Framework: React or Next.js. Default to Server Components (RSC).
• RSC SAFETY: Global state works ONLY in Client Components. In Next.js, wrap providers in a "use client" component.
• INTERACTIVITY ISOLATION: Any component using Motion, scroll listeners, or pointer physics MUST be an isolated leaf with 'use client' at the top. Server Components render static layouts only.
• Styling: Tailwind v4 (default). Tailwind v3 only if the existing project demands it.
• For v4: do NOT use tailwindcss plugin in postcss.config.js. Use @tailwindcss/postcss or the Vite plugin.
• Animation: Motion (the library formerly known as Framer Motion). Import from motion/react (import { motion } from "motion/react"). The framer-motion package still works as a legacy alias - prefer motion/react in new code.
• Fonts: Always use next/font (Next.js) or self-host with @font-face + font-display: swap. Never link Google Fonts via <link> in production.

3.B State

• Local useState / useReducer for isolated UI.
• Global state ONLY for deep prop-drilling avoidance - Zustand, Jotai, or React context.
• NEVER use useState to track continuous values driven by user input (mouse position, scroll progress, pointer physics, magnetic hover). Use Motion's useMotionValue / useTransform / useScroll. useState re-renders the React tree on every change and collapses on mobile.

3.C Icons

• Allowed libraries (priority order): @phosphor-icons/react, hugeicons-react, @radix-ui/react-icons, @tabler/icons-react.
• Discouraged: lucide-react. Acceptable only when the user explicitly asks for it or the project already depends on it.
• NEVER hand-roll SVG icons. If a glyph is missing, install a second library or compose from primitives - do not draw icon paths from scratch.
• One family per project. Do not mix Phosphor with Lucide in the same component tree.
• Standardize `strokeWidth` globally (e.g. 1.5 or 2.0).

3.D Emoji Policy

Discouraged by default in code, markup, and visible text. Replace symbols with icon-library glyphs. Override: allow emojis only when the user explicitly asks for a playful / chat-style / social-native vibe - and even then use them sparingly with intent.

3.E Responsiveness & Layout Mechanics

• Standardize breakpoints (sm 640, md 768, lg 1024, xl 1280, 2xl 1536).
• Contain page layouts using max-w-[1400px] mx-auto or max-w-7xl.
• Viewport Stability: NEVER use h-screen for full-height Hero sections. ALWAYS use min-h-[100dvh] to prevent layout jumping on mobile (iOS Safari address bar).
• Grid over Flex-Math: NEVER use complex flexbox percentage math (w-[calc(33%-1rem)]). ALWAYS use CSS Grid (grid grid-cols-1 md:grid-cols-3 gap-6).

3.F Dependency Verification (mandatory)

Before importing ANY 3rd-party library, check package.json. If the package is missing, output the install command first. Never assume a library exists.

4. DESIGN ENGINEERING DIRECTIVES (Bias Correction)

LLMs default to clichés. Override these defaults proactively. Each rule has a context-aware override path.