Web Coding Style

File Organization

Organize by feature or surface area, not by file type:

src/
├── components/
│   ├── hero/
│   │   ├── Hero.tsx
│   │   ├── HeroVisual.tsx
│   │   └── hero.css
│   ├── scrolly-section/
│   │   ├── ScrollySection.tsx
│   │   ├── StickyVisual.tsx
│   │   └── scrolly.css
│   └── ui/
│       ├── Button.tsx
│       ├── SurfaceCard.tsx
│       └── AnimatedText.tsx
├── hooks/
│   ├── useReducedMotion.ts
│   └── useScrollProgress.ts
├── lib/
│   ├── animation.ts
│   └── color.ts
└── styles/
    ├── tokens.css
    ├── typography.css
    └── global.css

CSS Custom Properties

Define design tokens as variables. Do not hardcode palette, typography, or spacing repeatedly:

:root {
  --color-surface: oklch(98% 0 0);
  --color-text: oklch(18% 0 0);
  --color-accent: oklch(68% 0.21 250);

  --text-base: clamp(1rem, 0.92rem + 0.4vw, 1.125rem);
  --text-hero: clamp(3rem, 1rem + 7vw, 8rem);

  --space-section: clamp(4rem, 3rem + 5vw, 10rem);

  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

Animation-Only Properties

Prefer compositor-friendly motion:

transform
opacity
clip-path
filter (sparingly)

Avoid animating layout-bound properties:

width
height
top
left
margin
padding
border
font-size

Semantic HTML First

<header>
  <nav aria-label="Main navigation">...</nav>
</header>
<main>
  <section aria-labelledby="hero-heading">
    <h1 id="hero-heading">...</h1>
  </section>
</main>
<footer>...</footer>

Do not reach for generic wrapper div stacks when a semantic element exists.

Naming

Components: PascalCase (ScrollySection, SurfaceCard)
Hooks: use prefix (useReducedMotion)
CSS classes: kebab-case or utility classes
Animation timelines: camelCase with intent (heroRevealTl)

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