frontend-dev/
├── SKILL.md                      # Core skill (this file)
├── scripts/                      # Asset generation scripts
│   ├── minimax_tts.py            # Text-to-speech
│   ├── minimax_music.py          # Music generation
│   ├── minimax_video.py          # Video generation (async)
│   └── minimax_image.py          # Image generation
├── references/                   # Detailed guides (read as needed)
│   ├── minimax-cli-reference.md  # CLI flags quick reference
│   ├── asset-prompt-guide.md     # Asset prompt engineering rules
│   ├── minimax-tts-guide.md      # TTS usage & voices
│   ├── minimax-music-guide.md    # Music prompts & lyrics format
│   ├── minimax-video-guide.md    # Camera commands & models
│   ├── minimax-image-guide.md    # Ratios & batch generation
│   ├── minimax-voice-catalog.md  # All voice IDs
│   ├── motion-recipes.md         # Animation code snippets
│   ├── env-setup.md              # Environment setup
│   └── troubleshooting.md        # Common issues
├── templates/                    # Visual art templates
│   ├── viewer.html               # p5.js interactive art base
│   └── generator_template.js     # p5.js code reference
└── canvas-fonts/                 # Static art fonts (TTF + licenses)

Project Structure

Assets (Universal)

All frameworks use the same asset organization:

assets/
├── images/
│   ├── hero-landing-1710xxx.webp
│   ├── icon-feature-01.webp
│   └── bg-pattern.svg
├── videos/
│   ├── hero-bg-1710xxx.mp4
│   └── demo-preview.mp4
└── audio/
    ├── bgm-ambient-1710xxx.mp3
    └── tts-intro-1710xxx.mp3

Asset naming: {type}-{descriptor}-{timestamp}.{ext}

By Framework

Framework	Asset Location	Component Location
Pure HTML	`./assets/`	N/A (inline or `./js/`)
React/Next.js	`public/assets/`	`src/components/`
Vue/Nuxt	`public/assets/`	`src/components/`
Svelte/SvelteKit	`static/assets/`	`src/lib/components/`
Astro	`public/assets/`	`src/components/`

Pure HTML

project/
├── index.html
├── assets/
│   ├── images/
│   ├── videos/
│   └── audio/
├── css/
│   └── styles.css
└── js/
    └── main.js           # Animations (GSAP/vanilla)

React / Next.js

project/
├── public/assets/        # Static assets
├── src/
│   ├── components/
│   │   ├── ui/           # Button, Card, Input
│   │   ├── sections/     # Hero, Features, CTA
│   │   └── motion/       # RevealSection, StaggerGrid
│   ├── lib/
│   ├── styles/
│   └── app/              # Pages
└── package.json

Vue / Nuxt

project/
├── public/assets/
├── src/                  # or root for Nuxt
│   ├── components/
│   │   ├── ui/
│   │   ├── sections/
│   │   └── motion/
│   ├── composables/      # Shared logic
│   ├── pages/
│   └── assets/           # Processed assets (optional)
└── package.json

Astro

project/
├── public/assets/
├── src/
│   ├── components/       # .astro, .tsx, .vue, .svelte
│   ├── layouts/
│   ├── pages/
│   └── styles/
└── package.json

Component naming: PascalCase (HeroSection.tsx, HeroSection.vue, HeroSection.astro)

Compliance

All rules in this skill are mandatory. Violating any rule is a blocking error — fix before proceeding or delivering.

Workflow

Phase 1: Design Architecture

Analyze the request — determine page type and context
Set design dials based on page type
Plan layout sections and identify asset needs

Phase 2: Motion Architecture

Select animation tools per section (see Tool Selection Matrix)
Plan motion sequences following performance guardrails

Phase 3: Asset Generation

Generate all image/video/audio assets using scripts/. NEVER use placeholder URLs (unsplash, picsum, placeholder.com, via.placeholder, placehold.co, etc.) or external URLs.

Parse asset requirements (type, style, spec, usage)
Craft optimized prompts, show to user, confirm before generating
Execute via scripts, save to project — do NOT proceed to Phase 5 until all assets are saved locally

Phase 4: Copywriting & Content

Follow copywriting frameworks (AIDA, PAS, FAB) to craft all text content. Do NOT use "Lorem ipsum" — write real copy.

Phase 5: Build UI

Scaffold the project and build each section following Design and Motion rules. Integrate generated assets and copy. All <img>, <video>, <source>, and CSS background-image MUST reference local assets from Phase 3.

Phase 6: Quality Gates

Run final checklist (see Quality Gates section).

1. Design Engineering

1.1 Baseline Configuration

Dial	Default	Range
DESIGN_VARIANCE	8	1=Symmetry, 10=Asymmetric
MOTION_INTENSITY	6	1=Static, 10=Cinematic
VISUAL_DENSITY	4	1=Airy, 10=Packed

Adapt dynamically based on user requests.

1.2 Architecture Conventions

DEPENDENCY VERIFICATION: Check package.json before importing any library. Output install command if missing.
Framework: React/Next.js. Default to Server Components. Interactive components must be isolated "use client" leaf components.
Styling: Tailwind CSS. Check version in package.json — NEVER mix v3/v4 syntax.
ANTI-EMOJI POLICY: NEVER use emojis anywhere. Use Phosphor or Radix icons only.
Viewport: Use min-h-[100dvh] not h-screen. Use CSS Grid not flex percentage math.
Layout: max-w-[1400px] mx-auto or max-w-7xl.

1.3 Design Rules

Rule	Directive
Typography	Headlines: `text-4xl md:text-6xl tracking-tighter`. Body: `text-base leading-relaxed max-w-[65ch]`. NEVER use Inter — use Geist/Outfit/Satoshi. NEVER use Serif on dashboards.
Color	Max 1 accent, saturation < 80%. NEVER use AI purple/blue. Stick to one palette.
Layout	NEVER use centered heroes when VARIANCE > 4. Force split-screen or asymmetric layouts.
Cards	NEVER use generic cards when DENSITY > 7. Use `border-t`, `divide-y`, or spacing.
States	ALWAYS implement: Loading (skeleton), Empty, Error, Tactile feedback (`scale-[0.98]`).
Forms	Label above input. Error below. `gap-2` for input blocks.

1.4 Anti-Slop Techniques

Liquid Glass: backdrop-blur + border-white/10 + shadow-[inset_0_1px_0_rgba(255,255,255,0.1)]
Magnetic Buttons: Use useMotionValue/useTransform — never useState for continuous animations
Perpetual Motion: When INTENSITY > 5, add infinite micro-animations (Pulse, Float, Shimmer)
Layout Transitions: Use Framer layout and layoutId props
Stagger: Use staggerChildren or CSS animation-delay: calc(var(--index) * 100ms)

1.5 Forbidden Patterns

Category	Banned
Visual	Neon glows, pure black (#000), oversaturated accents, gradient text on headers, custom cursors
Typography	Inter font, oversized H1s, Serif on dashboards
Layout	3-column equal card rows, floating elements with awkward gaps
Components	Default shadcn/ui without customization

1.6 Creative Arsenal

Category	Patterns
Navigation	Dock magnification, Magnetic button, Gooey menu, Dynamic island, Radial menu, Speed dial, Mega menu
Layout	Bento grid, Masonry, Chroma grid, Split-screen scroll, Curtain reveal
Cards	Parallax tilt, Spotlight border, Glassmorphism, Holographic foil, Swipe stack, Morphing modal
Scroll	Sticky stack, Horizontal hijack, Locomotive sequence, Zoom parallax, Progress path, Liquid swipe
Gallery	Dome gallery, Coverflow, Drag-to-pan, Accordion slider, Hover trail, Glitch effect
Text	Kinetic marquee, Text mask reveal, Scramble effect, Circular path, Gradient stroke, Kinetic grid
Micro	Particle explosion, Pull-to-refresh, Skeleton shimmer, Directional hover, Ripple click, SVG draw, Mesh gradient, Lens blur

1.7 Bento Paradigm

Palette: Background #f9fafb, cards pure white with border-slate-200/50
Surfaces: rounded-[2.5rem], diffusion shadow
Typography: Geist/Satoshi, tracking-tight headers
Labels: Outside and below cards
Animation: Spring physics (stiffness: 100, damping: 20), infinite loops, React.memo isolation

5-Card Archetypes:

Intelligent List — auto-sorting with layoutId
Command Input — typewriter + blinking cursor
Live Status — breathing indicators
Wide Data Stream — infinite horizontal carousel
Contextual UI — staggered highlight + float-in toolbar

1.8 Brand Override

When brand styling is active:

Dark: #141413, Light: #faf9f5, Mid: #b0aea5, Subtle: #e8e6dc
Accents: Orange #d97757, Blue #6a9bcc, Green #788c5d
Fonts: Poppins (headings), Lora (body)

2. Motion Engine

2.1 Tool Selection Matrix

Need	Tool
UI enter/exit/layout	Framer Motion — `AnimatePresence`, `layoutId`, springs
Scroll storytelling (pin, scrub)	GSAP + ScrollTrigger — frame-accurate control
Looping icons	Lottie — lazy-load (~50KB)
3D/WebGL	Three.js / R3F — isolated `<Canvas>`, own `"use client"` boundary
Hover/focus states	CSS only — zero JS cost
Native scroll-driven	CSS — `animation-timeline: scroll()`

Conflict Rules [MANDATORY]:

NEVER mix GSAP + Framer Motion in same component
R3F MUST live in isolated Canvas wrapper
ALWAYS lazy-load Lottie, GSAP, Three.js

2.2 Intensity Scale

Level	Techniques
1-2 Subtle	CSS transitions only, 150-300ms
3-4 Smooth	CSS keyframes + Framer animate, stagger ≤3 items
5-6 Fluid	`whileInView`, magnetic hover, parallax tilt
7-8 Cinematic	GSAP ScrollTrigger, pinned sections, horizontal hijack
9-10 Immersive	Full scroll sequences, Three.js particles, WebGL shaders

2.3 Animation Recipes

See references/motion-recipes.md for full code. Summary:

Recipe	Tool	Use For
Scroll Reveal	Framer	Fade+slide on viewport entry
Stagger Grid	Framer	Sequential list animations
Pinned Timeline	GSAP	Horizontal scroll with pinning
Tilt Card	Framer	Mouse-tracking 3D perspective
Magnetic Button	Framer	Cursor-attracted buttons
Text Scramble	Vanilla	Matrix-style decode effect
SVG Path Draw	CSS	Scroll-linked path animation
Horizontal Scroll	GSAP	Vertical-to-horizontal hijack
Particle Background	R3F	Decorative WebGL particles
Layout Morph	Framer	Card-to-modal expansion

2.4 Performance Rules

GPU-only properties (ONLY animate these): transform, opacity, filter, clip-path

NEVER animate: width, height, top, left, margin, padding, font-size — if you need these effects, use transform: scale() or clip-path instead.

Isolation:

Perpetual animations MUST be in React.memo leaf components
will-change: transform ONLY during animation
contain: layout style paint on heavy containers

Mobile:

ALWAYS respect prefers-reduced-motion
ALWAYS disable parallax/3D on pointer: coarse
Cap particles: desktop 800, tablet 300, mobile 100
Disable GSAP pin on mobile < 768px

Cleanup: Every useEffect with GSAP/observers MUST return () => ctx.revert()

2.5 Springs & Easings

Feel	Framer Config
Snappy	`stiffness: 300, damping: 30`
Smooth	`stiffness: 150, damping: 20`
Bouncy	`stiffness: 100, damping: 10`
Heavy	`stiffness: 60, damping: 20`

CSS Easing	Value
Smooth decel	`cubic-bezier(0.16, 1, 0.3, 1)`
Smooth accel	`cubic-bezier(0.7, 0, 0.84, 0)`
Elastic	`cubic-bezier(0.34, 1.56, 0.64, 1)`

2.6 Accessibility

ALWAYS wrap motion in prefers-reduced-motion check
NEVER flash content > 3 times/second (seizure risk)
ALWAYS provide visible focus rings (use outline not box-shadow)
ALWAYS add aria-live="polite" for dynamically revealed content
ALWAYS include pause button for auto-playing animations

2.7 Dependencies

npm install framer-motion           # UI (keep at top level)
npm install gsap                    # Scroll (lazy-load)
npm install lottie-react            # Icons (lazy-load)
npm install three @react-three/fiber @react-three/drei  # 3D (lazy-load)

3. Asset Generation

3.1 Scripts

Type	Script	Pattern
TTS	`scripts/minimax_tts.py`	Sync
Music	`scripts/minimax_music.py`	Sync
Video	`scripts/minimax_video.py`	Async (create → poll → download)
Image	`scripts/minimax_image.py`	Sync

Env: MINIMAX_API_KEY (required).

3.2 Workflow

Parse: type, quantity, style, spec, usage
Craft prompt: Be specific (composition, lighting, style). NEVER include text in image prompts.
Execute: Show prompt to user, MUST confirm before generating, then run script
Save: <project>/public/assets/{images,videos,audio}/ as {type}-{descriptor}-{timestamp}.{ext} — MUST save locally
Post-process: Images → WebP, Videos → ffmpeg compress, Audio → normalize
Deliver: File path + code snippet + CSS suggestion

3.3 Preset Shortcuts

Shortcut	Spec
`hero`	16:9, cinematic, text-safe
`thumb`	1:1, centered subject
`icon`	1:1, flat, clean background
`avatar`	1:1, portrait, circular crop ready
`banner`	21:9, OG/social
`bg-video`	768P, 6s, `[Static shot]`
`video-hd`	1080P, 6s
`bgm`	30s, no vocals, loopable
`tts`	MiniMax HD, MP3

3.4 Reference

references/minimax-cli-reference.md — CLI flags
references/asset-prompt-guide.md — Prompt rules
references/minimax-voice-catalog.md — Voice IDs
references/minimax-tts-guide.md — TTS usage
references/minimax-music-guide.md — Music generation (prompts, lyrics, structure tags)
references/minimax-video-guide.md — Camera commands
references/minimax-image-guide.md — Ratios, batch

4. Copywriting

4.1 Core Job

Grab attention → 2. Create desire → 3. Remove friction → 4. Prompt action

4.2 Frameworks

AIDA (landing pages, emails):

ATTENTION:  Bold headline (promise or pain)
INTEREST:   Elaborate problem ("yes, that's me")
DESIRE:     Show transformation
ACTION:     Clear CTA

PAS (pain-driven products):

PROBLEM:    State clearly
AGITATE:    Make urgent
SOLUTION:   Your product

FAB (product differentiation):

FEATURE:    What it does
ADVANTAGE:  Why it matters
BENEFIT:    What customer gains

4.3 Headlines

Formula	Example
Promise	"Double open rates in 30 days"
Question	"Still wasting 10 hours/week?"
How-To	"How to automate your pipeline"
Number	"7 mistakes killing conversions"
Negative	"Stop losing leads"
Curiosity	"The one change that tripled bookings"
Transformation	"From 50 to 500 leads"

Be specific. Lead with outcome, not method.

4.4 CTAs

Bad: Submit, Click here, Learn more

Good: "Start my free trial", "Get the template now", "Book my strategy call"

Formula: [Action Verb] + [What They Get] + [Urgency/Ease]

Place: above fold, after value, multiple on long pages.

4.5 Emotional Triggers

Trigger	Example
FOMO	"Only 3 spots left"
Fear of loss	"Every day without this, you're losing $X"
Status	"Join 10,000+ top agencies"
Ease	"Set it up once. Forget forever."
Frustration	"Tired of tools that deliver nothing?"
Hope	"Yes, you CAN hit $10K MRR"

4.6 Objection Handling

Objection	Response
Too expensive	Show ROI: "Pays for itself in 2 weeks"
Won't work for me	Social proof from similar customer
No time	"Setup takes 10 minutes"
What if it fails	"30-day money-back guarantee"
Need to think	Urgency/scarcity

Place in FAQ, testimonials, near CTA.

4.7 Proof Types

Testimonials (with name/title), Case studies, Data/metrics, Social proof, Certifications

5. Visual Art

Philosophy-first workflow. Two output modes.

5.1 Output Modes

Mode	Output	When
Static	PDF/PNG	Posters, print, design assets
Interactive	HTML (p5.js)	Generative art, explorable variations

5.2 Workflow

Step 1: Philosophy Creation

Name the movement (1-2 words). Articulate philosophy (4-6 paragraphs) covering:

Static: space, form, color, scale, rhythm, hierarchy
Interactive: computation, emergence, noise, parametric variation

Step 2: Conceptual Seed

Identify subtle, niche reference — sophisticated, not literal. Jazz musician quoting another song.

Step 3: Creation

Static Mode:

Single page, highly visual, design-forward
Repeating patterns, perfect shapes
Sparse typography from canvas-fonts/
Nothing overlaps, proper margins
Output: .pdf or .png + philosophy .md

Interactive Mode:

Read templates/viewer.html first
Keep FIXED sections (header, sidebar, seed controls)
Replace VARIABLE sections (algorithm, parameters)
Seeded randomness: randomSeed(seed); noiseSeed(seed);
Output: single self-contained HTML

Step 4: Refinement

Refine, don't add. Make it crisp. Polish into masterpiece.

Quality Gates

Design:

Mobile layout collapse (w-full, px-4) for high-variance designs
min-h-[100dvh] not h-screen
Empty, loading, error states provided
Cards omitted where spacing suffices

Motion:

Correct tool per selection matrix
No GSAP + Framer mixed in same component
All useEffect have cleanup returns
prefers-reduced-motion respected
Perpetual animations in React.memo leaf components
Only GPU properties animated
Heavy libraries lazy-loaded

General:

Dependencies verified in package.json
No placeholder URLs — grep the output for unsplash, picsum, placeholder, placehold, via.placeholder, lorem.space, dummyimage. If ANY found, STOP and replace with generated assets before delivering.
All media assets exist as local files in the project's assets directory
Asset prompts confirmed with user before generation

React and Next.js are trademarks of Meta Platforms, Inc. and Vercel, Inc., respectively. Vue.js is a trademark of Evan You. Tailwind CSS is a trademark of Tailwind Labs Inc. Svelte and SvelteKit are trademarks of their respective owners. GSAP/GreenSock is a trademark of GreenSock Inc. Three.js, Framer Motion, Lottie, Astro, and all other product names are trademarks of their respective owners.

frontend-dev

Frontend Studio

Invocation

Skill Structure