Frontend Design

Frontend Design (Impeccable Fusion Edition)

This skill guides creation of distinctive, production-grade frontend interfaces that avoid generic "AI slop" aesthetics. It fuses Impeccable design philosophy with extended knowledge on state management, engineering, and design style systems.

Context Gathering Protocol

Design skills produce generic output without project context. You MUST have confirmed design context before doing any design work.

Required context — every design skill needs at minimum:

• Target audience: Who uses this product and in what context?
• Use cases: What jobs are they trying to get done?
• Brand personality/tone: How should the interface feel?

Gathering order:

1. Check current instructions (instant): If your loaded instructions already contain a Design Context section, proceed immediately.
2. Check .impeccable.md (fast): If not in instructions, read .impeccable.md from the project root. If it exists and contains the required context, proceed.
3. Gather it now (REQUIRED): If neither source has context, ask the user for the three items above before doing anything else. Do NOT skip this step and do NOT infer context from the codebase instead. Once gathered, offer to save it to .impeccable.md at the project root so future sessions skip straight to step 2. (The detailed intake playbook lives at impeccable/teach-impeccable/SKILL.md.)

Design Direction

Commit to a BOLD aesthetic direction:

• Purpose: What problem does this interface solve? Who uses it?
• Tone: Pick an extreme: brutally minimal, maximalist chaos, retro-futuristic, organic/natural, luxury/refined, playful/toy-like, editorial/magazine, brutalist/raw, art deco/geometric, soft/pastel, industrial/utilitarian, etc.
• Constraints: Technical requirements (framework, performance, accessibility).
• Differentiation: What makes this UNFORGETTABLE? What's the one thing someone will remember?

CRITICAL: Choose a clear conceptual direction and execute it with precision. Bold maximalism and refined minimalism both work — the key is intentionality, not intensity.

Frontend Aesthetics Guidelines

Typography

Consult typography reference for scales, pairing, and loading strategies.

Choose fonts that are beautiful, unique, and interesting. Pair a distinctive display font with a refined body font.

DO: Use a modular type scale with fluid sizing (clamp) for display text; fixed rem scales for app UIs DO: Vary font weights and sizes to create clear visual hierarchy DON'T: Use overused fonts — Inter, Roboto, Arial, Open Sans, system defaults DON'T: Use monospace typography as lazy shorthand for "technical/developer" vibes DON'T: Put large icons with rounded corners above every heading — they rarely add value

Color & Theme

Consult color reference for OKLCH, palettes, and dark mode.

Commit to a cohesive palette. Dominant colors with sharp accents outperform timid, evenly-distributed palettes.

DO: Use OKLCH (not HSL) for perceptually uniform, maintainable palettes DO: Tint your neutrals toward your brand hue — even a subtle hint creates subconscious cohesion DON'T: Use gray text on colored backgrounds — use a shade of the background color instead DON'T: Use pure black (#000) or pure white (#fff) — always tint DON'T: Use the AI color palette: cyan-on-dark, purple-to-blue gradients, neon accents on dark backgrounds DON'T: Use gradient text for "impact" — it's decorative rather than meaningful DON'T: Default to dark mode with glowing accents

Layout & Space

Consult spatial reference for grids, rhythm, and container queries.

DO: Create visual rhythm through varied spacing — tight groupings, generous separations DO: Use fluid spacing with clamp() that breathes on larger screens DO: Use asymmetry and unexpected compositions; break the grid intentionally DON'T: Wrap everything in cards — not everything needs a container DON'T: Nest cards inside cards — flatten the hierarchy DON'T: Use identical card grids — same-sized cards with icon + heading + text, repeated endlessly DON'T: Center everything — left-aligned text with asymmetric layouts feels more designed DON'T: Use the same spacing everywhere — without rhythm, layouts feel monotonous

Visual Details

DO: Use intentional, purposeful decorative elements that reinforce brand DON'T: Use glassmorphism everywhere — blur effects used decoratively rather than purposefully DON'T: Use rounded elements with thick colored border on one side — a lazy accent DON'T: Use sparklines as decoration — tiny charts that convey nothing meaningful DON'T: Use rounded rectangles with generic drop shadows — safe, forgettable DON'T: Use modals unless there's truly no better alternative

Motion

Consult motion reference for timing, easing, and reduced motion.

DO: Use motion to convey state changes — entrances, exits, feedback DO: Use exponential easing (ease-out-quart/quint/expo) for natural deceleration DO: For height animations, use grid-template-rows transitions DON'T: Animate layout properties (width, height, padding, margin) — use transform and opacity only DON'T: Use bounce or elastic easing — they feel dated and tacky

Interaction

Consult interaction reference for forms, focus, and loading patterns.

DO: Use progressive disclosure — start simple, reveal sophistication through interaction DO: Design empty states that teach the interface, not just say "nothing here" DO: Make every interactive surface feel intentional and responsive DON'T: Repeat the same information — redundant headers, intros that restate the heading DON'T: Make every button primary — hierarchy matters

Responsive

Consult responsive reference for mobile-first, fluid design, and container queries.

DO: Use container queries (@container) for component-level responsiveness DO: Adapt the interface for different contexts — don't just shrink it DON'T: Hide critical functionality on mobile — adapt, don't amputate

UX Writing

Consult ux-writing reference for labels, errors, and empty states.

DO: Make every word earn its place DON'T: Repeat information users can already see

The AI Slop Test

Critical quality check: If you showed this interface to someone and said "AI made this," would they believe you immediately? If yes, that's the problem.

A distinctive interface should make someone ask "how was this made?" not "which AI made this?"

Review the DON'T guidelines above — they are the fingerprints of AI-generated work from 2024-2025.

Reference Library (Impeccable)

Deep-dive reference documents for each design dimension:

Extended Knowledge (Original)

Design Style Systems

Specific style variant specs with CSS tokens and component patterns:

Technique Playbooks (20 Impeccable modules)

These 20 techniques are not separate slash commands — they're this skill's toolbox. Each is a detailed step-by-step playbook at impeccable/<name>/SKILL.md (installed under ~/.claude/skills/ccg/impeccable/). When a task calls for one, read that file and apply it; every playbook assumes the design principles above. Invoke /ccg:frontend-design once and pull in whichever techniques the work needs.

Quality & Audit

Fix & Align

Style & Expression

Structure & Components

Combining techniques

Chain playbooks in sequence for a full pass — e.g. audit → normalize → polish (find issues, fix inconsistencies, final cleanup), or critique → harden (UX review, then add error handling). Read each module's SKILL.md in turn and carry its output into the next.

Implementation Principles

Match implementation complexity to the aesthetic vision. Maximalist designs need elaborate code with extensive animations and effects. Minimalist or refined designs need restraint, precision, and careful attention to spacing, typography, and subtle details.

Interpret creatively and make unexpected choices that feel genuinely designed for the context. No design should be the same. Vary between light and dark themes, different fonts, different aesthetics. NEVER converge on common choices across generations.

Use Cases

• Design system establishment
• Component library development
• UI/UX audit and review (audit, critique playbooks)
• Accessibility improvement
• Responsive layout design (adapt playbook)
• Interaction and animation design (animate, delight playbooks)
• Style variant selection (Claymorphism / Glassmorphism / Neubrutalism / Liquid Glass)
• Performance optimization (optimize playbook)
• Pre-launch polish (polish playbook)
• Copy improvement (clarify playbook)
• Production hardening (harden playbook)
• Typography refinement (typeset playbook)
• Layout improvement (arrange playbook)