Imported from ECFN15/Portfolio (.agents/skills/motion/SKILL.md). Install upstream with npx skills add ECFN15/Portfolio --skill motion. Copyright stays with the author.

Motion

Mandatory <design_plan>

Before substantial UI code, output a compact <design_plan> block. Include:

1. Use case: page/app type, audience, primary action, emotional target.
2. Style direction: one Motion archetype below.
3. Operating mode: density, motion, decoration, contrast, radius, and asset burden.
4. First viewport: nav type, H1 width/line strategy, animated product/narrative object with a static fallback, CTA treatment, next-section hint.
5. System contracts: type, color, surface, radius, spacing, depth, state, and motion tokens.
6. Component plan: at least four concrete Motion components with states.
7. Motion plan: declared motion primitive, timing, performance guardrail, and reduced-motion fallback.
8. Anti-slop sweep: top three failure modes for this style and how you will avoid them.

If the request is tiny, do this mentally and keep the final answer concise.

Core Directive

Build motion-first interfaces where movement is not decoration but the structure of attention: reveal, continuity, state, chaptering, proof, and feedback. A Motion design must still read as a strong static composition when animation is disabled; motion then adds sequence, timing, depth, and tactility.

Do not make a normal SaaS layout with scroll fades. Pick one source-derived archetype, commit to its color budget, type pressure, radius stance, spacing rhythm, surface language, and animation grammar, then make every component obey that system.

For substantial UI work, create a compact <design_plan> before code:

1. Use case: audience, object being sold or explained, conversion action, emotional temperature.
2. Archetype: choose one primary archetype from the 9 below, plus one supporting motion role if needed.
3. Motion engine: choose CSS, Framer Motion, GSAP+ScrollTrigger, Lenis+GSAP, R3F/Three, or View Transitions from the picker.
4. First viewport: nav geometry, H1 line strategy, proof object, CTA stance, next-section hint.
5. Contracts: palette size, type pair, radius rule, spacing rhythm, surface depth, image burden.
6. Choreography: what enters, pins, scrubs, loops, reacts to pointer, and what stops under reduced motion.
7. Failure sweep: name the top three ways this could become generic and prevent them in the code.

For small edits, do this mentally and keep the answer short.

Style Operating Mode

Signature System

• Motion Archetypes By Engine: choose GSAP scroll, 3D camera/orbit, shader field, scanline terminal, kinetic type, or physical card stack.
• Static Frame Test: every section must still read if animation is disabled.
• Reduced Motion Contract: provide a visible but nonmoving equivalent.
• Choreography Map: hero, transition, proof, interaction, and footer each get distinct motion roles.

Differentiation

Use Motion when motion-heavy websites, animated product pages, scroll narratives, cinematic launches, interactive brand experiences. If removing the animated product/narrative object, token rules, or signature components leaves a generic page, this skill is the right lens and the signature object must stay. Use a static visual skill when motion is decorative only; use this when movement is part of the information architecture.

Execution Token Contract

Every Motion build must declare these tokens before component styling. Source packs can tune values, but components must use this vocabulary.

:root {
  --canvas: #0b0b10;
  --surface: #151622;
  --surface-muted: #202236;
  --text: #f7f7ff;
  --text-muted: #b8bad0;
  --line: rgba(255,255,255,.12);
  --action: #8b5cf6;
  --action-strong: #22d3ee;
  --radius-control: 999px;
  --radius-card: 18px;
  --radius-panel: 28px;
  --font-sans: Geist, Inter, system-ui, sans-serif;
  --font-display: var(--font-sans);
  --font-mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;
  --type-mono-xs: 500 10px/1.4 var(--font-mono);
  --type-mono-sm: 500 11px/1.4 var(--font-mono);
  --type-meta: 500 12px/1.45 var(--font-sans);
  --type-body-sm: 400 13px/1.55 var(--font-sans);
  --type-body: 400 15px/1.62 var(--font-sans);
  --type-ui: 600 14px/1.4 var(--font-sans);
  --type-card: 600 20px/1.18 var(--font-sans);
  --type-section-sm: 600 28px/1.08 var(--font-display);
  --type-section: 600 42px/1.02 var(--font-display);
  --type-display: 600 clamp(46px, 8vw, 82px)/.92 var(--font-display);
  --track-mono-xs: .16em;
  --track-mono-sm: .10em;
  --track-section: -.025em;
  --track-display: -.04em;
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 20px;
  --s-6: 24px;
  --s-7: 32px;
  --s-8: 48px;
  --s-9: 64px;
  --s-10: 80px;
  --s-11: 96px;
  --shadow-flat: none;
  --shadow-card: 0 18px 50px rgba(0,0,0,.28);
  --shadow-panel: 0 32px 90px rgba(0,0,0,.38);
  --shadow-hero: 0 60px 150px rgba(139,92,246,.30);
  --shadow-modal: 0 24px 80px rgba(15,23,42,.16);
  --shadow-action: 0 6px 18px color-mix(in srgb, var(--action), transparent 72%);
  --status-success-bg: rgba(52,211,153,.14);
  --status-success-fg: #34d399;
  --status-info-bg: rgba(96,165,250,.14);
  --status-info-fg: #60a5fa;
  --status-warning-bg: rgba(251,191,36,.16);
  --status-warning-fg: #fbbf24;
  --status-danger-bg: rgba(248,113,113,.16);
  --status-danger-fg: #f87171;
  --status-neutral-bg: rgba(255,255,255,.08);
  --status-neutral-fg: #b8bad0;
  --state-hover-bg: color-mix(in srgb, var(--action), var(--surface) 90%);
  --state-selected-bg: color-mix(in srgb, var(--action), var(--surface) 84%);
  --state-focus-ring: 0 0 0 3px color-mix(in srgb, var(--action), transparent 72%);
  --ease-product: cubic-bezier(.2,.8,.2,1);
  /* Compatibility aliases for legacy source recipes. Prefer the generic tokens above in new code. */
  --dur-reveal: 760ms;
  --dur-ui: 260ms;
  --ease-emphasized: var(--ease-product);
  --ease-out-expo: cubic-bezier(.16,1,.3,1);
  --font-body: var(--font-sans);
  --i: var(--surface-muted);
  --motion-canvas: var(--canvas);
  --motion-ink: var(--text);
  --motion-line: var(--line);
  --motion-surface: var(--surface);
  --radius-stage: var(--radius-panel);
}

Pairing rules:

• hero-block: font: var(--type-display), letter-spacing: var(--track-display), text-wrap: balance, max-width: 22ch.
• section-head: font: var(--type-section), letter-spacing: var(--track-section), max-width: 18ch.
• card-block: title uses --type-card, body uses --type-body, metadata uses --type-meta.
• data-label: use --type-mono-sm, uppercase only for tags, code, coordinates, IDs, or status.
• status-pill: always uses one --status-{role}-bg/fg pair plus text, never color alone.

Tailwind to token mapping:

Status words:

Token rule: if a value can be expressed by m/style tokens, do not invent raw Tailwind scale, arbitrary rgba shadows, or new status hex.

Motion Principles

• Motion is grammar: entrance establishes hierarchy, scrub establishes sequence, hover establishes affordance, transitions preserve continuity, loops create atmosphere.
• Every animation needs a role. If it cannot be named as reveal, feedback, continuity, attention routing, atmosphere, comparison, or story progression, remove it.
• Animate transform and opacity first. Use clip-path sparingly for masked reveals. Avoid animating top, left, width, height, margin, and expensive blur on scrolling content.
• Build the static endpoint first. Scroll-triggered content must be readable if JavaScript fails or animation is skipped.
• One viewport cannot carry every trick. Choose a dominant motion type: kinetic type, pinned narrative, 3D stage, shader atmosphere, product state demo, or looped marquee.
• Reduced motion is a designed state, not a disabled website. Preserve information, contrast, rhythm, and current section state without movement.

The 9 Motion Archetypes

Pick one primary archetype. Do not average them together.

1. Brutalist DTC

Source signal: Liquid Death. Heavy metal vending machine, anti-corporate product commerce.

• Use for: counter-culture DTC, beverage, merch, streetwear, loud launches, anti-polished campaigns.
• Palette: pure black #000000, bone white #ffffff, off-black #151515, ash #e3e3e3, gravel #727272, light ash #f5f5f5, charcoal hover #232323, metallic gold #d2ac5a and antique gold #8a6d35 only for logo or rare links.
• Typography: Acumin Pro or equivalent geometric grotesk; uppercase 700 for headlines; condensed cut for calorie/spec/narrow labels. Display around 60px with 1.0 line-height; body 14-16px with deliberate positive tracking.
• Radius: 0px everywhere: buttons, inputs, cards, modals, product tiles.
• Spacing: 4px base; 24px card padding; rigid 3-4 column grids; full-bleed black/white/gray bands do most of the layout work.
• Motion rules: hard section cuts, product image reveals, marquee or banner sweeps, hover color snaps under 200ms. Avoid soft springs, gooey easing, gradients, and lifestyle-photo parallax.
• Components: rectangular primary buttons, outlined secondary buttons, full-width banner CTAs, sharp text inputs, grid product cards on ash fields.

2. Type Foundry Minimalism

Source signal: Heavyweight. Stark white catalog where type previews are the moving product.

• Use for: type foundries, editorial portfolios, design studios, archives, software with a type or asset catalog.
• Palette: heavy ink #222222, canvas white #ffffff, frost #f3f5fa, graphite #2d2d2d, muted ash #888888, one green #39d17f reserved for "new" or active flags.
• Typography: Nuckle-like custom sans; 14-16px body does most work; type specimen content becomes the display. Use 400/500 only.
• Radius: 11px cards/default controls, 10px small buttons; keep font showcase cards visually quiet.
• Spacing: irregular but precise: 4, 5, 7, 8, 10, 12, 18, 30; huge 166px section gaps; 12px internal spacing.
• Motion rules: subtle opacity and background-color transitions, animated specimen/video cards, smooth reveal sequencing. No theatrical parallax.
• Components: font preview cards with aspect-ratio shells, bordered buttons, persistent top nav, sparse metadata rows.

3. Nebula Gradient Hero

Source signal: Handshake. Dark canvas lit by a green-to-cyan radial field.

• Use for: recruiting, marketplaces, creator platforms, AI tools that need optimism and kinetic discovery.
• Palette: deep space #000000, midnight #14151c, cosmic gray #052326, stardust #ffffff, guidepost green #d3fb52, muted text #666666, hero radial green-cyan-to-transparent.
• Typography: SansPlomb-like display at extreme scale, 0.8 line-height, -0.02em tracking; NoiGrotesk-like body with stylistic sets "ss03", "ss06", "ss12" enabled.
• Radius: 8px nav/buttons, 12px large buttons, 24px cards/inputs, 9999px tags.
• Spacing: 8px base; 16px component gaps; 24px section rhythm; 64-120px for hero breathing room.
• Motion rules: slow radial drift, gradient pulse, translucent cards over atmosphere, ghost border hover, search/input focus glow from accent. Keep the gradient behind the interface, not inside every surface.
• Components: central hero search, ghost nav controls, translucent feature cards using rgb(255 255 255 / 0.06), accent CTA.

4. Stark Editorial Dark

Source signal: cthdrl. Typographic film opening on a black canvas.

• Use for: creative studios, art direction, editorial campaigns, premium portfolios, minimal agencies.
• Palette: exactly two colors: midnight void #000000 and ghost sand #e7ded1.
• Typography: NB Akademie-like display, 400 only, 121px desktop, 0.85 line-height, slight negative tracking; mono body/UI at 11-32px with extreme -0.045em tracking.
• Radius: 0px everywhere.
• Spacing: irregular 10, 11, 26, 30, 50, 75; 26px section gaps; zero card padding unless content explicitly needs it.
• Motion rules: word/letter reveals, thin line/arc drawing, cursor-following type distortions, smooth scroll continuity. No filled CTAs, no saturated accents, no multiple weights.
• Components: ghost text links, hairline dividers, border-as-underline CTAs, centered single-column chapters.

5. Instrument Panel

Source signal: Superlative. Matte technical panel with product photography and status indicators.

• Use for: hardware, audio tools, instruments, industrial products, technical demos, precision devices.
• Palette: superlative black #141414, instrument gray #232323, panel gray #8c8c8c, signal orange #e66f27 for indicators only, ghost white #ffffff, surface white #f6f4f2, divider #e4e3e2, black borders.
• Typography: condensed mechanical display with 0.08em tracking; SL-Light-like large titles; single-weight body. Keep labels uppercase and engineered.
• Radius: 0px ghost buttons, 3px outlined buttons, 15px badges.
• Spacing: 8px base, but use 15px element gap, 30px card padding, 60px section gap; include occasional large 90/120/240 intervals.
• Motion rules: subtle product parallax, LED/status sweep, orange band animation behind labels, nav gray-to-white hover. No gradients, no orange CTAs.
• Components: panel blocks, pill badges, wide ghost buttons with 18.5/45px padding, full-bleed angled product media.

6. Holographic Sci-Fi

Source signal: MekaVerse. Deep-space command center with translucent UI over 3D world imagery.

• Use for: games, web3, sci-fi launches, spatial tools, collectibles, cinematic community pages.
• Palette: void black #000000, cloud white #ffffff, light mist #b8bab9, ghost gray #e2e2e2, control gray #444345; decorative blue #2e9ec3, red #bc1010, pink #d69dbb, light blue #20b0d7, blue-gray #9faac0. Use one decorative accent per section.
• Typography: Roobert-like display with ligatures off ("liga" 0); GT America Mono-like 10-12px body with -0.02em tracking.
• Radius: 2px buttons/nav, 10px cards, 20px containers.
• Spacing: 4px base, 20px element/card padding, 40px section gap, occasional 116px dramatic separation.
• Motion rules: slow 3D map pan/rotation, layered depth, fade/slide overlays, underline nav hover, translucent ghost buttons that allow background through.
• Components: full-viewport image/3D hero, hairline cards, translucent ghost CTAs, compact mono metadata.

7. Neon Noir Editorial

Source signal: HAPE PRIME. Digital fashion runway in black and crimson.

• Use for: digital fashion, NFT character brands, luxury streetwear, dramatic editorial commerce, avatar products.
• Palette: crimson #730200, deep black #000000, ghost white #ffffff, top-anchored crimson heat radial. No other chromatic colors.
• Typography: Integral CF-like headlines with 400/600/800 and extreme tracking variation; Neue Plak Extended body at 12-15px with -0.02em; Druk Text Wide 10px uppercase micro labels.
• Radius: 26px pills for all buttons and links; 0px cards and image blocks. This contrast is the signature.
• Spacing: 4/6/8/10/12/15/20/30/40/50; tight 6px element gaps; 50px section spacing; crimson cards with 50px horizontal-only padding.
• Motion rules: 3D character rotate in hero, crimson radial pulse, full-bleed band transitions, ghost button inversion. Do not add complex grids or extra gradients.
• Components: sharp crimson content cards, pill ghost nav, bottom nav, centered character stage, two-column editorial sections.

8. Geometric Soft-Cards

Source signal: Moving Parts. High-contrast geometric SaaS/editorial hybrid.

• Use for: premium SaaS, design tooling, portfolios, creative software, product explainers.
• Palette: black #000000, white #ffffff, dark #121212, fog #bcc1c7, warm mist #efefef, cloud #b3b3b3, pale ash #999999, pure royal blue #0000ff as the exclusive CTA, emerald #00d37c for soft emphasis, conic spectrum for decorative motion only.
• Typography: Unica77 with "salt" and "ss01" through "ss09"; PP Neue Montreal for display; Druk XXCondensed at 195-248px; Whyte Semi-Mono for body. This is controlled type plurality, not random font soup.
• Radius: bipolar: 0px buttons and inputs, 2.5px small elements, 14px images, 18px icons, 90.3833px cards, 106.333px large cards, sometimes top-rounded/flat-bottom.
• Spacing: 4px base; 13px element gap; 30px card padding; 40px section gap; large 120/148/172 intervals for poster rhythm.
• Motion rules: rotating conic shapes, huge type choreography, card stack motion, stylistic-set hover shifts, sharp blue CTA states. Only one large shadow may exist.
• Components: sharp blue CTAs, ultra-rounded cards, bottom-flat hero containers, geometric decorative discs, large product screenshots.

9. Iridescent Shader Night

Source signal: homunculus. Minimal dark site where an organic shader is the identity.

• Use for: creative tech labs, experimental portfolios, Japanese-style studios, abstract art/technology pages.
• Palette: black #000000, ghost #ffffff, dark slate #383838, asphalt #6f6f6f, silver #dddddd. Chromatic color appears only inside the organic shader asset.
• Typography: rare inversion: Times-like serif for body/content authority; urw-din-like sans for UI. UI tracking can swing from -0.08em at 12px to 0.20em at 14px.
• Radius: 0px everywhere.
• Spacing: radically minimal 8 and 10px for compact controls; single-axis full-bleed layout; 1px hairlines.
• Motion rules: full-bleed iridescent fluid shader, underline/border nav hover, scroll indicator pulse, single-axis narrative scroll. No multi-column grids, no card stacks, no multi-level elevation.
• Components: top-left logo mark, top-right contact/social cluster, hairline dividers, compact scroll indicator, fixed shader canvas.

Archetype Picker

• DTC, merch, street energy: Brutalist DTC or Neon Noir.
• Type, archive, portfolio: Type Foundry Minimalism or Stark Editorial Dark.
• Marketplace, SaaS, product discovery: Nebula Gradient Hero or Geometric Soft-Cards.
• Hardware, music, technical gear: Instrument Panel.
• Game, web3, cinematic community: Holographic Sci-Fi or Neon Noir.
• Experimental studio, shader art, quiet premium: Iridescent Shader Night or Stark Editorial Dark.

If the prompt says "motion-heavy" without more context, choose the archetype from the object: product commerce -> Brutalist DTC; abstract agency -> Stark Editorial Dark; platform -> Nebula; technical product -> Instrument Panel.

Motion Engine Picker

Use the smallest engine that can deliver the motion role.

CSS Only

Use for hover states, looping marquees, ambient gradients, simple reveals, button physics, and reduced-motion-safe UI. Prefer CSS when animation is continuous but non-interactive.

• Best at: marquee, shimmer, gradient drift, hover inversion, focus outlines, view-timeline when supported.
• Avoid when: you need scroll pinning, timeline scrubbing, sequencing across many elements, or 3D camera logic.

Framer Motion

Use in React apps for component-level enter/exit, layout continuity, modals, shared layoutId, drag, and small state machines.

• Best at: UI state transitions, route panels, card stacks, word reveals, viewport once-reveals.
• Avoid when: a page depends on exact scroll timelines or long pinned narratives; use GSAP instead.

GSAP + ScrollTrigger

Use for choreographed pages: pinning, scrubbed galleries, chapter timelines, word opacity scrubs, stack cards, and media scale/fade.

• Best at: pinned narrative, smooth sequential timelines, complicated start/end triggers, responsive rebuild through matchMedia.
• Guardrail: register plugins once, scope animations to a component, kill triggers on unmount, disable pinning on cramped mobile unless tested.

Lenis + GSAP

Use only when the design needs eased scroll feel across cinematic sections and the project can own scroll behavior.

• Best at: long narrative landing pages, luxury/editorial motion, continuous scroll-linked fields.
• Avoid when: dashboards, forms, chat, data-heavy apps, native scroll restoration, or accessibility concerns matter more than cinematic feel.

R3F / Three

Use when the hero proof is a 3D object, shader, particle field, world map, or product model that cannot be faked with CSS.

• Best at: rotating character/product, shader night, holographic scenes, interactive pointer parallax in 3D.
• Guardrail: lazy load the canvas, cap DPR, pause offscreen, provide static poster fallback, keep UI outside the canvas for accessibility.

View Transitions API

Use for route/page continuity and small same-document morphs when supported. Progressive enhancement only.

• Best at: gallery-to-detail, card-to-modal, filtered list continuity, route title morphs.
• Guardrail: feature-detect document.startViewTransition; provide normal state update fallback.

Reusable Motion CSS

.motion-root {
  min-height: 100svh;
  overflow-x: clip;
  background: var(--motion-canvas);
  color: var(--motion-ink);
  font-family: var(--font-body);
}

.motion-display {
  font-family: var(--font-display);
  font-size: clamp(4rem, 13vw, 13rem);
  line-height: 0.84;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  text-wrap: balance;
}

.motion-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.motion-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.75rem 1rem;
  border: 1px solid var(--motion-line);
  border-radius: var(--radius-control);
  background: transparent;
  color: currentColor;
  transition:
    background-color var(--dur-ui) var(--ease-out-expo),
    color var(--dur-ui) var(--ease-out-expo),
    border-color var(--dur-ui) var(--ease-out-expo),
    transform var(--dur-ui) var(--ease-emphasized);
}

.motion-ghost:is(:hover, :focus-visible) {
  border-color: currentColor;
}

.motion-ghost:active {
  transform: scale(0.985);
}

@keyframes motion-rise-mask {
  from { opacity: 0; transform: translate3d(0, 110%, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

@keyframes motion-nebula-drift {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1) rotate(0deg); }
  50% { transform: translate3d(6%, -4%, 0) scale(1.08) rotate(8deg); }
}

@keyframes motion-conic-spin {
  to { transform: rotate(360deg); }
}

@keyframes motion-marquee-x {
  to { transform: translate3d(-50%, 0, 0); }
}

Core Component Kit

Use these components before inventing new surfaces. Rename in implementation if needed, but preserve the props, states, and token usage.

type MotionState = "default" | "hover" | "selected" | "loading" | "empty" | "error" | "success";
type MotionStatus = "success" | "info" | "warning" | "danger" | "neutral";

export function MotionStatusPill({ role, children }: { role: MotionStatus; children: React.ReactNode }) {
  return <span className="motion-status-pill" data-role={role}>{children}</span>;
}

export function PinnedScrollChapterContract({ state = "default" }: { state?: MotionState }) {
  return <section className="motion-hero-object" data-state={state} aria-label="Motion proof object" />;
}

export function ScrubbedGalleryContract({ title, meta, state = "default" }: { title: string; meta: string; state?: MotionState }) {
  return <article className="motion-card" data-state={state}><span>{meta}</span><strong>{title}</strong></article>;
}

export function KineticWordRevealContract({ items }: { items: string[] }) {
  return <nav className="motion-rail">{items.map((item, index) => <button data-active={index === 0} key={item}>{item}</button>)}</nav>;
}

export function MotionSectionHeader({ eyebrow, title, children }: { eyebrow: string; title: string; children: React.ReactNode }) {
  return <header className="motion-section-head"><span>{eyebrow}</span><h2>{title}</h2><p>{children}</p></header>;
}

.motion-status-pill {
  display: inline-flex;
  width: max-content;
  align-items: center;
  padding: var(--s-1) 10px;
  border-radius: 999px;
  font: var(--type-mono-sm);
  letter-spacing: var(--track-mono-sm);
  background: var(--status-neutral-bg);
  color: var(--status-neutral-fg);
}
.motion-status-pill[data-role="success"] { background: var(--status-success-bg); color: var(--status-success-fg); }
.motion-status-pill[data-role="info"] { background: var(--status-info-bg); color: var(--status-info-fg); }
.motion-status-pill[data-role="warning"] { background: var(--status-warning-bg); color: var(--status-warning-fg); }
.motion-status-pill[data-role="danger"] { background: var(--status-danger-bg); color: var(--status-danger-fg); }
.motion-hero-object {
  min-height: clamp(320px, 48vw, 620px);
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  background: var(--surface);
  box-shadow: var(--shadow-hero);
  overflow: hidden;
}
.motion-card {
  display: grid;
  gap: var(--s-2);
  padding: var(--s-6);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: var(--shadow-card);
  transition: background 180ms var(--ease-product), box-shadow 180ms var(--ease-product), transform 180ms var(--ease-product);
}
.motion-card[data-state="selected"] { background: var(--state-selected-bg); box-shadow: var(--shadow-panel); }
.motion-card[data-state="loading"] { opacity: .62; pointer-events: none; }
.motion-card[data-state="error"] { border-color: var(--status-danger-fg); }
.motion-card > span { font: var(--type-meta); color: var(--text-muted); }
.motion-card > strong { font: var(--type-card); color: var(--text); }
.motion-rail { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.motion-rail button { padding: var(--s-2) var(--s-4); border: 1px solid var(--line); border-radius: var(--radius-control); background: var(--surface); font: var(--type-ui); color: var(--text-muted); }
.motion-rail button[data-active="true"] { background: var(--state-selected-bg); color: var(--text); box-shadow: var(--state-focus-ring); }
.motion-section-head { display: grid; gap: var(--s-3); max-width: 760px; }
.motion-section-head > span { font: var(--type-mono-xs); letter-spacing: var(--track-mono-xs); text-transform: uppercase; color: var(--text-muted); }
.motion-section-head h2 { margin: 0; font: var(--type-section); letter-spacing: var(--track-section); text-wrap: balance; color: var(--text); }
.motion-section-head p { margin: 0; font: var(--type-body); color: var(--text-muted); }
@media (max-width: 760px) {
  .motion-hero-object { min-height: 280px; }
  .motion-rail { overflow-x: auto; flex-wrap: nowrap; }
}

Complete Page Protocols

// Pinned Product Narrative
<main data-skill="motion" data-archetype="pinned-product-narrative">
  <PinnedScrollChapterContract chapter="01" media={<AnimatedProductDemoContract />} />
  <ScrubbedGalleryContract frames={productStates} fallback="static storyboard" />
  <TimelineControlContract items={["Intro", "Proof", "Action"]} />
  <ReducedMotionFallbackContract mode="visible-static-sequence" />
</main>

// Kinetic Launch
<main data-skill="motion" data-archetype="kinetic-launch">
  <KineticWordRevealContract text="Motion explains state" />
  <CursorParallaxStageContract state="selected" />
  <MotionCardStackContract cards={featureCards} />
</main>

Copyable Recipes

Pinned Scroll Narrative: GSAP + ScrollTrigger

Use for product chapters where text should pin while media scrubs through states. Keep pinning desktop-first.

import { useLayoutEffect, useRef } from "react";
import gsap from "gsap";
import { ScrollTrigger } from "gsap/ScrollTrigger";

gsap.registerPlugin(ScrollTrigger);

type Chapter = { kicker: string; title: string; body: string; image: string };

export function PinnedNarrative({ chapters }: { chapters: Chapter[] }) {
  const root = useRef<HTMLElement | null>(null);

  useLayoutEffect(() => {
    const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
    if (reduce || !root.current) return;

    const ctx = gsap.context(() => {
      const media = gsap.matchMedia();

      media.add("(min-width: 900px)", () => {
        const panels = gsap.utils.toArray<HTMLElement>("[data-panel]");
        const images = gsap.utils.toArray<HTMLElement>("[data-panel-image]");

        gsap.set(panels.slice(1), { autoAlpha: 0, y: 48 });
        gsap.set(images.slice(1), { autoAlpha: 0, scale: 1.08 });

        const tl = gsap.timeline({
          scrollTrigger: {
            trigger: root.current,
            start: "top top",
            end: () => `+=${chapters.length * window.innerHeight}`,
            scrub: 0.8,
            pin: true,
            anticipatePin: 1
          }
        });

        panels.forEach((panel, index) => {
          if (index === 0) return;
          tl.to(panels[index - 1], { autoAlpha: 0, y: -36, duration: 0.45 }, index)
            .to(images[index - 1], { autoAlpha: 0, scale: 0.96, duration: 0.45 }, index)
            .to(panel, { autoAlpha: 1, y: 0, duration: 0.55 }, index + 0.05)
            .to(images[index], { autoAlpha: 1, scale: 1, duration: 0.65 }, index + 0.05);
        });
      });
    }, root);

    return () => ctx.revert();
  }, [chapters.length]);

  return (
    <section ref={root} className="motion-pin">
      <div className="motion-pin__copy">
        {chapters.map((chapter) => (
          <article data-panel className="motion-pin__panel" key={chapter.title}>
            <p className="motion-label">{chapter.kicker}</p>
            <h2>{chapter.title}</h2>
            <p>{chapter.body}</p>
          </article>
        ))}
      </div>
      <div className="motion-pin__media" aria-hidden="true">
        {chapters.map((chapter) => (
          <img data-panel-image src={chapter.image} alt="" key={chapter.image} />
        ))}
      </div>
    </section>
  );
}

.motion-pin {
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 6rem);
  align-items: center;
  padding: clamp(4rem, 8vw, 8rem);
}

.motion-pin__copy {
  position: relative;
  min-height: 44vh;
}

.motion-pin__panel {
  position: absolute;
  inset: 0 auto auto 0;
  max-width: 34rem;
}

.motion-pin__panel h2 {
  margin: 0.35em 0;
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 8rem);
  line-height: 0.86;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.motion-pin__media {
  position: relative;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--motion-surface);
  border-radius: var(--radius-stage);
}

.motion-pin__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  will-change: transform, opacity;
}

@media (max-width: 899px) {
  .motion-pin {
    display: block;
    padding: 4rem 1rem;
  }

  .motion-pin__panel,
  .motion-pin__media img {
    position: static;
    opacity: 1 !important;
    transform: none !important;
  }

  .motion-pin__media {
    margin-top: 2rem;
  }
}

Split Word Reveal Without Paid SplitText

Use accessible text, then split words into masked spans. For letters, split graphemes with Intl.Segmenter; for most UI, word reveal is more stable.

import { useMemo } from "react";

export function SplitWordReveal({ text }: { text: string }) {
  const words = useMemo(() => text.trim().split(/\s+/), [text]);

  return (
    <h1 className="split-title" aria-label={text}>
      {words.map((word, index) => (
        <span className="split-word" aria-hidden="true" key={`${word}-${index}`}>
          <span style={{ "--i": index } as React.CSSProperties}>{word}</span>
        </span>
      ))}
    </h1>
  );
}

.split-title {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.22em;
  max-width: min(100%, 12ch);
  font-family: var(--font-display);
  font-size: clamp(4.5rem, 15vw, 13rem);
  line-height: 0.82;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.split-word {
  display: inline-block;
  overflow: hidden;
  padding-bottom: 0.04em;
}

.split-word > span {
  display: inline-block;
  animation: motion-rise-mask var(--dur-reveal) var(--ease-out-expo) both;
  animation-delay: calc(var(--i) * 70ms);
  will-change: transform, opacity;
}

CSS Marquee With Hover Pause

Duplicate the items once in the DOM for a clean -50% loop. Use for partners, drops, navigation rails, or status strips.

export function MotionMarquee({ items }: { items: string[] }) {
  const loop = [...items, ...items];
  return (
    <div className="marquee" aria-label={items.join(", ")}>
      <div className="marquee__track" aria-hidden="true">
        {loop.map((item, index) => (
          <span className="marquee__item" key={`${item}-${index}`}>{item}</span>
        ))}
      </div>
    </div>
  );
}

.marquee {
  width: 100%;
  overflow: hidden;
  border-block: 1px solid var(--motion-line);
  background: var(--motion-canvas);
  color: var(--motion-ink);
}

.marquee__track {
  display: flex;
  width: max-content;
  gap: clamp(2rem, 6vw, 6rem);
  padding: 1rem 0;
  white-space: nowrap;
  animation: motion-marquee-x 28s linear infinite;
}

.marquee:hover .marquee__track,
.marquee:focus-within .marquee__track {
  animation-play-state: paused;
}

.marquee__item {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

Cursor Parallax With Lerp + RAF

Use inside a bounded stage. Disable on touch and reduced motion. Keep the cursor decorative; never hide required information behind it.

import { useEffect, useRef } from "react";

export function CursorParallaxStage({ children }: { children: React.ReactNode }) {
  const stage = useRef<HTMLDivElement | null>(null);
  const target = useRef({ x: 0, y: 0 });
  const current = useRef({ x: 0, y: 0 });

  useEffect(() => {
    const node = stage.current;
    const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
    const coarse = window.matchMedia("(pointer: coarse)").matches;
    if (!node || reduce || coarse) return;

    let raf = 0;
    const onMove = (event: PointerEvent) => {
      const rect = node.getBoundingClientRect();
      target.current.x = (event.clientX - rect.left) / rect.width - 0.5;
      target.current.y = (event.clientY - rect.top) / rect.height - 0.5;
    };

    const tick = () => {
      current.current.x += (target.current.x - current.current.x) * 0.12;
      current.current.y += (target.current.y - current.current.y) * 0.12;
      node.style.setProperty("--parallax-x", current.current.x.toFixed(4));
      node.style.setProperty("--parallax-y", current.current.y.toFixed(4));
      raf = requestAnimationFrame(tick);
    };

    node.addEventListener("pointermove", onMove);
    raf = requestAnimationFrame(tick);

    return () => {
      cancelAnimationFrame(raf);
      node.removeEventListener("pointermove", onMove);
    };
  }, []);

  return <div ref={stage} className="cursor-stage">{children}</div>;
}

.cursor-stage {
  --parallax-x: 0;
  --parallax-y: 0;
  position: relative;
  overflow: clip;
}

.cursor-stage [data-depth="1"] {
  transform: translate3d(
    calc(var(--parallax-x) * 16px),
    calc(var(--parallax-y) * 16px),
    0
  );
}

.cursor-stage [data-depth="2"] {
  transform: translate3d(
    calc(var(--parallax-x) * -32px),
    calc(var(--parallax-y) * -24px),
    0
  );
}

View Transition Progressive Enhancement

Use for list-to-detail continuity. The fallback is the state update itself.

function runTransition(update: () => void) {
  if (!("startViewTransition" in document)) {
    update();
    return;
  }

  document.startViewTransition(update);
}

export function ProjectCard({ project, open }: { project: { id: string; title: string }; open: () => void }) {
  return (
    <button
      className="project-card"
      style={{ viewTransitionName: `project-${project.id}` }}
      onClick={() => runTransition(open)}
    >
      {project.title}
    </button>
  );
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 520ms;
  animation-timing-function: var(--ease-out-expo);
}

.project-card {
  contain: layout;
}

Reduced-Motion Fallback

This fallback freezes motion while preserving final visibility, focus, and section structure.

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal],
  [data-panel],
  [data-panel-image],
  .split-word > span {
    opacity: 1 !important;
    transform: none !important;
    clip-path: none !important;
    filter: none !important;
  }

  [data-parallax],
  [data-depth],
  .marquee__track {
    transform: none !important;
    animation: none !important;
  }
}

Layout And Type Rules

• Hero H1 should be intentionally wide and typically 2-3 lines on desktop. Use max-width: 12ch for huge poster words or max-width: 16-20ch for readable campaign lines.
• Use clamp() for display size, but do not scale body text with viewport width.
• Use OpenType features when the archetype depends on them: Handshake stylistic sets, MekaVerse ligatures off, Moving Parts many stylistic sets.
• Metadata text is usually uppercase, small, and either mono or extended. It should not become generic gray eyebrow filler.
• Motion layouts prefer full-bleed bands, pinned stages, single-axis flows, or poster grids over default centered 1200px sections.

Performance Guardrails

• Cap expensive animation count. One hero atmosphere, one scroll narrative, and one micro-interaction system is often enough.
• Use will-change only shortly before or during animation. Do not put it globally on dozens of cards.
• Avoid filter: blur() on large scrolling layers. If using atmospheric blur, keep it fixed, absolute, or canvas-rendered behind content.
• Lazy load 3D/canvas/video; render a poster or CSS fallback first.
• For R3F, set dpr={[1, 1.5]} or equivalent, pause render loops when offscreen, and avoid huge shadow maps.
• For GSAP, call ctx.revert() or kill triggers on unmount. Use ScrollTrigger.matchMedia() or gsap.matchMedia() for responsive timelines.
• Do not pin every section. Pinning is a narrative accent, not the whole page.
• Keep focus states visible and avoid motion that moves focused controls away from the pointer or keyboard user.
• Test at mobile width: no overlapping hero text, no hidden CTAs, no pinned sections trapping scroll, no horizontal scrollbar from offscreen animated elements.

Anti-Slop Rules

• No generic centered hero plus three feature cards unless the archetype explicitly transforms it with type, proof, and motion.
• No multicolor SaaS semantic palette where success/warning/info/destructive all compete. Motion systems budget chroma tightly.
• No purple-blue default gradients, generic Tailwind blue CTAs, or token soup.
• No rounded-default UI when the archetype calls for sharp, pill-only, or extreme bipolar geometry.
• No animation spam. Repeating fade-up on every element is weaker than one purposeful sequence.
• No empty decorative badges. Labels must carry category, status, metadata, or navigation.
• No cards inside cards unless building a deliberate nested hardware/bezel pattern.
• No "motion-only" content. The final state must communicate without replay.

Reference Use

For deeper source extraction, load references/refero-style-database.md. For source-specific inspiration, load only the selected file under references/sources/. For expanded implementation examples, load references/advanced-implementation-notes.md only after the archetype and token pack are chosen.

Absolute Bans

• No animating everything.
• No motion used to compensate for weak content.
• No width/height/top/left animation when transform can do it.
• No raw Tailwind typography, spacing, radius, color, or shadow defaults when a style token exists.
• No generic centered hero without the style's required proof/media/type object.
• No status colors without semantic role mapping and visible text.
• No component states left implicit: include hover, focus-visible, selected, loading, empty, error, success where relevant.

Pre-Output Checklist

• First viewport contains a real animated product/narrative object.
• One Motion archetype is clearly dominant.
• Execution tokens are declared and component CSS uses them.
• Typography uses named pairings, not raw Tailwind defaults.
• Spacing uses --s-* or style tokens, not mixed arbitrary padding.
• Radius, depth, and state colors use the token contract.
• Status labels use role mapping plus --status-{role}-bg/fg.
• Components include hover, focus-visible, selected, loading, empty, error, and success where relevant.
• Motion maps to declared motion primitive and has a reduced-motion fallback.
• Mobile layout preserves the style without overflow, unreadable text, or hidden controls.