UI UX Pro Max

Codex compatibility note:

• Invoke repository skills with $skill-name in Codex; this mirrored copy rewrites legacy Claude /skill-name references.
• Task tracker mandate: BEFORE executing any workflow or skill step, create/update task tracking for all steps and keep it synchronized as progress changes.
• User-question prompts mean to ask the user directly in Codex.
• Ignore Claude-specific mode-switch instructions when they appear.
• Strict execution contract: when a user explicitly invokes a skill, execute that skill protocol as written.
• Subagent authorization: when a skill is user-invoked or AI-detected and its protocol requires subagents, that skill activation authorizes use of the required spawn_agent subagent(s) for that task.
• Do not skip, reorder, or merge protocol steps unless the user explicitly approves the deviation first.
• For workflow skills, execute each listed child-skill step explicitly and report step-by-step evidence.
• If a required step/tool cannot run in this environment, stop and ask the user before adapting.

Codex Project-Reference Loading (No Hooks)

Codex uses static project-reference loading instead of runtime-injected project docs. When coding, planning, debugging, testing, or reviewing, open project docs explicitly using this routing.

Always read:

• docs/project-config.json (project-specific paths, commands, modules, and workflow/test settings)
• docs/project-reference/docs-index-reference.md (routes to the full docs/project-reference/* catalog)
• docs/project-reference/lessons.md (always-on guardrails and anti-patterns)

Missing/stale context route: If docs/project-config.json, the docs index, lessons.md, CLAUDE.md, AGENTS.md, or any task-required reference doc is missing or stale, auto-run $project-init or the narrow setup route ($project-config, $docs-init, $scan-all, $scan --target=<key>, $claude-md-init) before ordinary project-specific work. If Codex mirrors or AGENTS.md are missing/stale, ask the user to run $sync-codex; do not auto-run it.

Situation-based docs:

• Project structure/architecture/tech-stack/deployment/setup (any layer — backend, frontend, or infra): project-structure-reference.md
• Backend/CQRS/API/domain/entity changes: backend-patterns-reference.md, domain-entities-reference.md
• Frontend/UI/styling/design-system: frontend-patterns-reference.md, scss-styling-guide.md, design-system/README.md
• Spec authoring, docs/specs/ pathing, or TC format: feature-spec-reference.md, spec-system-reference.md, spec-principles.md
• Behavior/public-contract changes or spec-test-code sync: workflow-spec-test-code-cycle-reference.md plus the spec docs above
• Derived spec indexes/ERDs/reimplementation guides: spec-system-reference.md and source Feature Specs under docs/specs/
• Integration test implementation/review: integration-test-reference.md
• E2E test implementation/review: e2e-test-reference.md
• Code review/audit work: code-review-rules.md plus domain docs above based on changed files

Do not read all docs blindly. Start from docs-index-reference.md, then open only relevant files for the task.

Quick Summary

Goal: Provide searchable UI/UX design intelligence -- 50 styles, 21 palettes, 50 font pairings, 20 charts, 8 stacks.

Workflow:

1. Analyze — Extract product type, style keywords, industry, and stack from user request
2. Search — Query search.py across domains: product, style, typography, color, landing, chart, UX
3. Stack Guidelines — Get stack-specific best practices (default: html-tailwind)
4. Implement — Synthesize search results into cohesive design and code

Key Rules:

• No emojis as UI icons (use SVG: Heroicons, Lucide, Simple Icons)
• All clickable elements need cursor-pointer and hover feedback
• Light mode text must have 4.5:1 minimum contrast ratio
• Every async surface MUST handle all its states — show a loading indicator while in-flight, a user-visible error (with retry) on failure, and a meaningful empty state when there's no data. Never a frozen blank, a silent failure, or a blank list.
• Responsive by default — layouts MUST stay usable on small devices. Preferred: reflow (rows flex-wrap or row → column, grids collapse to one column). Acceptable fallback when a layout genuinely can't reflow (tables, canvases, wide grids): fixed min-width/min-height + overflow: auto scroll — scrolling is OK. Hard minimum: nothing broken — no clipped, cut-off, or unreachable content. If small-screen support needs a refactor too big for the task, confirm scope with the user first.
• Test both light/dark modes, all UI states (loading/error/empty), and responsive breakpoints (320/768/1024/1440) before delivery

Pre-read (project design system): When the project has a design system, load designSystem.canonicalDoc + tokenFiles from docs/project-config.json and prefer project tokens/components over the generic style intelligence database.

Be skeptical. Apply critical thinking, sequential thinking. Every claim needs traced proof, confidence percentages (Idea should be more than 80%).

UI/UX Pro Max - Design Intelligence

Searchable database of UI styles, color palettes, font pairings, chart types, product recommendations, UX guidelines, and stack-specific best practices.

Prerequisites

Check if Python is installed:

python3 --version || python --version

If Python is not installed, install it based on user's OS:

macOS:

brew install python3

Ubuntu/Debian:

sudo apt update && sudo apt install python3

Windows:

winget install Python.Python.3.12

How to Use This Skill

When user requests UI/UX work (design, build, create, implement, review, fix, improve), follow this workflow:

Step 1: Analyze User Requirements

Extract key information from user request:

• Product type: SaaS, e-commerce, portfolio, dashboard, landing page, etc.
• Style keywords: minimal, playful, professional, elegant, dark mode, etc.
• Industry: healthcare, fintech, gaming, education, etc.
• Stack: React, Vue, Next.js, or default to html-tailwind

Step 2: Search Relevant Domains

Use search.py multiple times to gather comprehensive information. Search until you have enough context.

python .claude/skills/ui-ux-pro-max/scripts/search.py "<keyword>" --domain <domain> [-n <max_results>]

Recommended search order:

1. Product - Get style recommendations for product type
2. Style - Get detailed style guide (colors, effects, frameworks)
3. Typography - Get font pairings with Google Fonts imports
4. Color - Get color palette (Primary, Secondary, CTA, Background, Text, Border)
5. Landing - Get page structure (if landing page)
6. Chart - Get chart recommendations (if dashboard/analytics)
7. UX - Get best practices and anti-patterns
8. Stack - Get stack-specific guidelines (default: html-tailwind)

Step 3: Stack Guidelines (Default: html-tailwind)

If user doesn't specify a stack, default to html-tailwind.

python .claude/skills/ui-ux-pro-max/scripts/search.py "<keyword>" --stack html-tailwind

Available stacks: html-tailwind, react, nextjs, vue, svelte, swiftui, react-native, flutter

Search Reference

Available Domains

Available Stacks

Example Workflow

User request: "Làm landing page cho dịch vụ chăm sóc da chuyên nghiệp"

AI should:

# 1. Search product type
python .claude/skills/ui-ux-pro-max/scripts/search.py "beauty spa wellness service" --domain product

# 2. Search style (based on industry: beauty, elegant)
python .claude/skills/ui-ux-pro-max/scripts/search.py "elegant minimal soft" --domain style

# 3. Search typography
python .claude/skills/ui-ux-pro-max/scripts/search.py "elegant luxury" --domain typography

# 4. Search color palette
python .claude/skills/ui-ux-pro-max/scripts/search.py "beauty spa wellness" --domain color

# 5. Search landing page structure
python .claude/skills/ui-ux-pro-max/scripts/search.py "hero-centric social-proof" --domain landing

# 6. Search UX guidelines
python .claude/skills/ui-ux-pro-max/scripts/search.py "animation" --domain ux
python .claude/skills/ui-ux-pro-max/scripts/search.py "accessibility" --domain ux

# 7. Search stack guidelines (default: html-tailwind)
python .claude/skills/ui-ux-pro-max/scripts/search.py "layout responsive" --stack html-tailwind

Then: Synthesize all search results and implement the design.

Tips for Better Results

1. Be specific with keywords - "healthcare SaaS dashboard" > "app"
2. Search multiple times - Different keywords reveal different insights
3. Combine domains - Style + Typography + Color = Complete design system
4. Always check UX - Search "animation", "z-index", "accessibility" for common issues
5. Use stack flag - Get implementation-specific best practices
6. Iterate - If first search doesn't match, try different keywords

Curation Constraints (UI/UX Design Principles)

The databases RECOMMEND; the 40 UI/UX Design Principles (UI-1.1–UI-9.4, the SYNC:ui-ux-design-principles block below) CONSTRAIN what you may recommend. A search hit is a CANDIDATE, not a verdict — verify it against the clauses before handing it to the user or to design. Project design-system docs outrank both the clauses and these databases; a genuine conflict goes to the user, NEVER resolved silently.

When a curated recommendation cannot satisfy a clause, say so explicitly with the clause ID and offer the compliant alternative — a beautiful palette that fails UI-3.1 is a FINDING, not a deliverable.

Common Rules for Professional UI

These are frequently overlooked issues that make UI look unprofessional:

Icons & Visual Elements

Interaction & Cursor

Light/Dark Mode Contrast

Layout & Spacing

Async UI States & Feedback (the most-missed fundamentals)

Every screen or component that fetches, submits, or mutates data MUST render all of its states — not just the happy path. A UI that looks perfect when populated but shows a frozen blank while loading, fails silently on error, or shows nothing when empty is broken UX. Canonical state vocabulary (shared with design-spec): Default / Loading / Disabled / Error / Empty / Success.

Responsive & Multi-Device (usable on small screens)

Pre-Delivery Checklist

Before delivering UI code, verify these items:

Visual Quality

• No emojis used as icons (use SVG instead)
• All icons from consistent icon set (Heroicons/Lucide)
• Brand logos are correct (verified from Simple Icons)
• Hover states don't cause layout shift

Interaction

• All clickable elements have cursor-pointer
• Hover states provide clear visual feedback
• Transitions are smooth (150-300ms)
• Focus states visible for keyboard navigation

States & Feedback (async surfaces — verify every one)

• Loading — every data fetch / submit / mutation shows a spinner or skeleton while in-flight (never a frozen blank screen)
• Error — every operation that can fail shows a human-readable error with a retry / recovery path (no silent failure, no raw stack trace)
• Empty — every list / table / collection view has a meaningful empty state (message + optional CTA), not a blank area
• In-flight disable — submit/action buttons are disabled or busy while their request runs (no double-submit)
• Success — completed mutations give confirmation feedback (toast / inline / updated data)

Light/Dark Mode

• Light mode text has sufficient contrast (4.5:1 minimum)
• Glass/transparent elements visible in light mode
• Borders visible in both modes
• Test both modes before delivery

Layout & Responsiveness

• Floating elements have proper spacing from edges
• No content hidden behind fixed navbars
• Responsive at 320px, 768px, 1024px, 1440px
• Rows flex-wrap or switch row → column on small screens; multi-column grids collapse to one column
• Usable down to 320px — nothing broken (no clipped, cut-off, or unreachable content); where a layout genuinely can't reflow, a min-width/min-height + overflow: auto scroll is acceptable
• Any small-screen fix that needs a large layout refactor was flagged and confirmed with the user (not silently rewritten)

Accessibility

• All images have alt text
• Form inputs have labels
• Color is not the only indicator
• prefers-reduced-motion respected

Related

• design --lane=marketing — Marketing/creative UI (landing pages, campaigns)
• design --lane=product — Product UIs (dashboards, admin panels, SaaS apps)
• shadcn-tailwind
• design-spec

[IMPORTANT] Use task tracking to break ALL work into small tasks BEFORE starting — including tasks for each file read. This prevents context loss from long files. For simple tasks, AI MUST ATTENTION ask user whether to skip.

UI/UX Design Principles (Rev 1.0 — 40 clauses, web + mobile) — the working rule set for ANY task that designs, plans, implements, or reviews a user interface. Applies to BOTH platforms unless a clause names one (§8 is mobile/touch). Cite clauses by ID: UI-3.1, UI-8.2.

Precedence: project design-system / SCSS / frontend-pattern docs OUTRANK these clauses; these clauses outrank generic taste. A genuine conflict is SURFACED to the user with both sides — NEVER resolved silently. — why: the project's own recorded decision is the authority; these clauses are the default when it is silent.

1.0 Visual Hierarchy & Layout

• UI-1.1 One focal point per screen. Two elements competing for first read → demote one.
• UI-1.2 Signal order: size → weight → colour → position. Use the cheapest signal that works before adding another.
• UI-1.3 Group by proximity, NEVER by border. Whitespace separates cleanly; boxes inside boxes do not.
• UI-1.4 Align to a shared edge. Every unexplained indent reads as an accident.
• UI-1.5 Design the empty, loading and error state FIRST. The full state is the easy one.

2.0 Typography

• UI-2.1 Max 2 families, 3 weights each. More variety reads as inconsistency, not range.
• UI-2.2 Body text 16px web, 17px mobile. NEVER below 14px for anything a user must read.
• UI-2.3 Line length 45–75 characters. Constrain the measure, not the container.
• UI-2.4 Leading scales inversely with size: 1.5 body, 1.1–1.2 display.
• UI-2.5 Fixed type scale — 6 named steps shared with engineering. NEVER one-off sizes.

3.0 Colour & Contrast

• UI-3.1 Contrast 4.5:1 text, 3:1 UI edges. Measure it — NEVER judge by eye on a bright screen.
• UI-3.2 One accent, one job. An accent that is everywhere points at nothing.
• UI-3.3 Colour NEVER carries meaning alone — pair it with an icon, label or position.
• UI-3.4 Dark mode is NOT inverted light mode. Lift surfaces to signal elevation; soften pure-white text.

4.0 Spacing & Grid

• UI-4.1 One spacing unit, multiplied — 4px or 8px base; every gap a multiple of it.
• UI-4.2 Space belongs to the container, not the child. Use gap; reserve margins for exceptions.
• UI-4.3 Tighter inside, looser between — inner padding always smaller than the gap to the next group.
• UI-4.4 Breakpoints follow content, not devices. Break where the layout stops working.

5.0 Interaction & Feedback

• UI-5.1 Every action gets a response under 100ms, even when the result takes longer.
• UI-5.2 Specify all 5 states — default, hover, focus, active, disabled — plus loading where it applies.
• UI-5.3 Prefer undo over confirmation. Confirm ONLY what cannot be reversed.
• UI-5.4 Motion clarifies cause and effect: 150–250ms, ease-out, honours reduced-motion.
• UI-5.5 Keep the visible focus ring. Restyle it if it clashes; NEVER remove it.

6.0 Navigation & IA

• UI-6.1 Every screen answers: where am I, what's here, where next.
• UI-6.2 Max 5 top-level destinations. Depth beats a crowded first level.
• UI-6.3 Label by the user's word, not the internal one. Team vocabulary is not a taxonomy.
• UI-6.4 Every state deserves a URL or a back path. Deep links and hardware back must land somewhere sensible.

7.0 Forms & Input

• UI-7.1 Ask for less. Every field needs a reason it exists today.
• UI-7.2 Labels stay visible. Placeholders are hints, NEVER labels.
• UI-7.3 Validate on blur, not on keystroke. Errors sit next to the field and say how to fix it.
• UI-7.4 Match keyboard to data type — correct input type, autocomplete and autocapitalise on every field.
• UI-7.5 NEVER lose entered data. Preserve input across errors, navigation and refresh.

8.0 Mobile & Touch (mobile/touch surfaces)

• UI-8.1 Hit target ≥44×44pt, 8px apart. The target may exceed the visible icon.
• UI-8.2 Primary actions in the bottom third — that is where the thumb lives.
• UI-8.3 Gestures are shortcuts, NEVER the only route. Anything swipeable is also tappable.
• UI-8.4 Respect safe areas and the keyboard. Notch, home indicator and on-screen keyboard all steal space.

9.0 Speed & Perceived Speed

• UI-9.1 Show structure before data — skeletons for known layouts, spinners only for unknown waits.
• UI-9.2 Assume success optimistically. Update UI first, reconcile after, roll back visibly on failure.
• UI-9.3 Reserve space for anything that loads. Images, ads and fonts must NEVER shift the layout.
• UI-9.4 Design for the slow connection. Offline, timeout and retry are states, NOT edge cases.

Apply by role — the clauses are one set; what you DO with them depends on the task:

Role	Obligation
DESIGN / PLAN a surface	Clauses shape the artifact: empty/loading/error specified first (UI-1.5), all 5 states enumerated (UI-5.2), type scale + spacing unit declared (UI-2.5, UI-4.1)
IMPLEMENT a component	Pre-completion gate: states · tokens · contrast · focus ring · touch target · reserved space (UI-5.2, UI-2.5/UI-4.1, UI-3.1, UI-5.5, UI-8.1, UI-9.3)
REVIEW UI code or a design artifact	Each clause is a fail-condition; every finding cites UI-<clause> + file:line + severity. NEVER a tick-box sweep — one focused pass per section
SCAN / document a UI system	Record where the PROJECT deliberately deviates, so the overriding doc becomes the recorded authority

Skip ONLY when the change has no user-facing surface (backend-only, tooling, docs) — state that explicitly so the skip is auditable, not an omission.

AI Mistake Prevention — Failure modes to avoid on every task:

Re-read files after context changes. Context compaction, resume, or long-running work can make memory stale; verify current files before acting. Verify generated content against source evidence. AI hallucinates APIs, names, claims, and document facts. Check the relevant source before documenting or referencing. Check downstream references before deleting or renaming. Removing an artifact can stale docs, generated mirrors, configs, and callers; map references first. Trace the full impact chain after edits. Changing a definition can miss derived outputs and consumers. Follow the affected chain before declaring done. Verify ALL affected outputs, not just the first. One green check is not all green checks; validate every output surface the change can affect. Assume existing values are intentional — ask WHY before changing OR flagging one as a defect. Before changing or reporting a constant, limit, flag, cutoff, wording, or pattern, read nearby context and history, the CALLER's ordering, and 2+ sibling call sites of the same convention. A doc stating WHAT without WHY is missing rationale, not proof of a missing guard. Surface ambiguity before acting — don't pick silently. Multiple valid interpretations require an explicit question or stated assumption with risk. Assert the outcome your system owns, not the intermediate state your infrastructure owns. When verifying async work, assert the final business state — never the delivery/retry bookkeeping held in shared infrastructure that any co-running process can write. Such a check passes when run alone and flakes the moment anything else shares that infrastructure. Keep shared guidance role-relevant. Universal guidance must help every receiving skill or agent; code-specific obligations belong only in code-specific protocols.

Critical Thinking Mindset — Apply critical thinking, sequential thinking. Every claim needs traced proof, confidence >80% to act. Anti-hallucination: Never present guess as fact — cite sources for every claim, admit uncertainty freely, self-check output for errors, cross-reference independently, stay skeptical of own confidence — certainty without evidence root of all hallucination.

MUST ATTENTION apply critical + sequential thinking — every claim needs appropriate traced evidence (file:line for repo/code claims; source URL or artifact section for research, product, content, and docs claims); confidence >80% to act, <60% DO NOT recommend. Anti-hallucination: never present guess as fact, admit uncertainty freely, cross-reference independently, stay skeptical of own confidence.

MUST ATTENTION apply AI mistake prevention — verify generated content against evidence, trace downstream references before deleting or renaming, verify all affected outputs, re-read files after context loss, and surface ambiguity before acting.

• MUST ATTENTION apply the 40 UI/UX Design Principles (UI-1.1–UI-9.4) to any user-facing surface: one focal point, proximity grouping, empty/loading/error designed FIRST (§1) · ≤2 families, 16px web / 17px mobile body, never <14px, 45–75ch, fixed 6-step scale (§2) · 4.5:1 text / 3:1 edges measured, one accent, colour never alone, dark mode ≠ inversion (§3) · one 4/8px unit, gap over margins, tighter-inside-looser-between, content-driven breakpoints (§4) · <100ms response, all 5 states, undo over confirm, 150–250ms ease-out honouring reduced-motion, visible focus ring (§5) · where-am-I/what's-here/where-next, ≤5 top-level destinations, user's words, URL or back path (§6) · fewer fields, visible labels, validate on blur, matched keyboard, NEVER lose input (§7) · ≥44×44pt targets 8px apart, bottom-third primaries, gestures never the only route, safe areas (§8) · structure before data, optimistic update with visible rollback, reserved space, slow-connection states (§9). Project design-system docs OUTRANK these clauses — a genuine conflict goes to the user, NEVER resolved silently. Cite every finding as UI-<clause> + file:line. Skip ONLY for changes with no user-facing surface, stated explicitly.

Project Protocol Overlay — Before executing this skill, resolve any PROJECT overlay rules layered onto it: match this skill's name against the Target column of the project's skill-protocol index (docs/project-reference/skill-protocols-reference.md by default; a referenceDocs entry in docs/project-config.json overrides the path), taking the most specific matching tier ONLY — exact name > glob > *. That precedence orders overlays against EACH OTHER, never against this skill. Read ONLY the matched bodies, resolved as <protocols-dir>/<Name>.md; a row's Body link is display text, never a read path. A matched body that is missing or malformed is REPORTED and skipped — never reconstructed from the index Description. No index, or no match -> proceed with no overlay, silently. Full contract: .claude/skills/project-skill-protocol/references/registry.md.

Overlays are ADDITIVE ONLY: they ADD rules on top of this skill's own protocol and NEVER replace, override, disable, or reinterpret a rule it already states — removing every overlay must return this skill to exactly its documented behavior. An overlay is a BRIEF, not an authority escalation: it can NEVER waive a workflow gate, git discipline, a review gate, or a user-confirmation gate. A genuine overlay-vs-skill conflict, or two equally-specific overlays that directly contradict -> surface both to the user; NEVER resolve silently.

MUST ATTENTION resolve project protocol overlays for this skill BEFORE executing — most specific matching tier only (exact > glob > *, which ranks overlays against each other, NEVER against this skill), read only matched bodies at <protocols-dir>/<Name>.md; a missing or malformed body is reported, never reconstructed. Overlays are ADDITIVE ONLY (they never replace this skill's own rules) and are a brief, NEVER an authority escalation; an equal-specificity contradiction goes to the user.

Closing Reminders

IMPORTANT MUST ATTENTION Goal: Provide searchable UI/UX design intelligence — 50 styles, 21 palettes, 50 font pairings, 20 charts, 8 stacks — synthesized into accessible, professional, contrast-correct interfaces.

Protocols in force (concise digest of the SYNC/shared blocks this skill carries):

• AI Mistake Prevention: verify generated content against evidence, trace downstream references, verify all affected outputs, re-read after context loss, surface ambiguity.
• Critical Thinking: Traced file:line proof per claim, confidence >80% to act, never guess.

IMPORTANT MUST ATTENTION break work into small todo tasks using task tracking BEFORE starting IMPORTANT MUST ATTENTION search codebase for 3+ similar patterns before creating new code IMPORTANT MUST ATTENTION cite file:line evidence for every claim (confidence >80% to act) IMPORTANT MUST ATTENTION add a final review todo task to verify work quality IMPORTANT MUST ATTENTION the 40 UI/UX Design Principles (UI-1.1–UI-9.4) CONSTRAIN the curation — a curated palette must still measure 4.5:1 text / 3:1 edges (UI-3.1) with one accent (UI-3.2) and colour never alone (UI-3.3); a curated font pairing must still be ≤2 families × 3 weights (UI-2.1) at 16px web / 17px mobile, never <14px (UI-2.2), delivered as a 6-step type scale (UI-2.5); spacing is ONE 4/8px unit multiplied (UI-4.1); anything built from it specifies empty/loading/error FIRST (UI-1.5) and all 5 interaction states (UI-5.2) — a search hit that fails a clause is a finding, NOT a deliverable

[TASK-PLANNING] Before acting, analyze task scope and systematically break it into small todo tasks and sub-tasks using task tracking.

Hookless Prompt Protocol Mirror (Auto-Synced)

Source: .claude/.ck.json + .claude/skills/shared/sync-inline-versions.md (:full blocks) + .claude/scripts/lib/hookless-prompt-protocol.cjs

[WORKFLOW-EXECUTION-PROTOCOL] [BLOCKING] Workflow Execution Protocol — MANDATORY IMPORTANT MUST CRITICAL. Do not skip for any reason.

Generic portability boundary: Reusable skills and protocol text stay project-neutral; project-specific conventions are discovered from docs/project-config.json and docs/project-reference/. Apply shared AI-SDD from shared/sdd-artifact-contract.md. Read docs/project-config.json and docs/project-reference/docs-index-reference.md, then open the project reference docs named there. For spec, test-case, behavior-change, public-contract, or docs/specs/ work, route through the local spec docs named by the docs index: feature-spec-reference.md, spec-system-reference.md, spec-principles.md, and workflow-spec-test-code-cycle-reference.md when specs/tests/code must stay synchronized. If either file or a required reference d

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