Frontend Design

Frontend Design

Create distinctive, production-grade interfaces with a clear aesthetic point-of-view. Choose a direction and execute it with precision. Bold maximalism and refined minimalism both work -- intentionality beats intensity.

Design Thinking (Before Coding)

Commit to an aesthetic direction by answering:

1. Purpose: What problem does this solve? Who uses it?
2. Tone: Pick an extreme -- brutally minimal, retro-futuristic, organic/natural, luxury/refined, playful/toy-like, editorial, brutalist/raw, art deco/geometric, industrial/utilitarian, etc.
3. Differentiator: What makes this unforgettable?

Anti-Defaults

NEVER use:

• Overused fonts as display fonts: Inter, Roboto, Arial, Space Grotesk (these are acceptable as body text when deliberately paired)
• system-ui as the sole font stack without an intentional pairing
• Purple gradients on white backgrounds
• Predictable card-grid Bootstrap-style layouts
• Generic blue CTA buttons with rounded corners on white
• Timid, evenly-distributed color palettes

ALWAYS:

• Choose a display font that is unexpected and characterful; pair with a refined body font
• Dominant colors with sharp accents over safe palettes
• Asymmetry, overlap, grid-breaking, or generous negative space
• Atmosphere and depth via gradient meshes, noise textures, geometric patterns, layered transparencies, dramatic shadows

Design System Architecture

Token Naming Convention

Tokens use a flat --{category}-{name} CSS custom property scheme:

| Category | Pattern | Examples | |----------|---------|----------| | Color | --color-{role} | --color-primary, --color-accent, --color-surface, --color-surface-elevated, --color-text, --color-text-secondary, --color-border | | Semantic | --color-{semantic} | --color-success, --color-warning, --color-error | | Font | --font-{role} | --font-display, --font-body, --font-mono | | Type scale | --text-{size} | --text-xs, --text-sm, --text-base, --text-lg, --text-xl | | Spacing | --space-{n} | --space-1 (0.25rem), --space-2 (0.5rem), --space-4 (1rem) | | Radius | --radius-{size} | --radius-sm, --radius-md, --radius-lg, --radius-full | | Shadow | --shadow-{level} | --shadow-sm, --shadow-md, --shadow-lg, --shadow-dramatic | | Motion | --ease-{name} | --ease-out, --ease-in-out, --ease-spring |

Token Reference (8px spacing base)

:root {
  /* Colors -- replace with project palette */
  --color-primary: ;
  --color-primary-fg: ;
  --color-accent: ;
  --color-surface: ;
  --color-surface-elevated: ;
  --color-surface-subtle: ;
  --color-text: ;
  --color-text-secondary: ;
  --color-text-inverse: ;
  --color-border: ;
  --color-success: ;
  --color-warning: ;
  --color-error: ;

  /* Fonts -- set via next/font CSS variables */
  --font-display: var(--font-display-var, Georgia, serif);
  --font-body: var(--font-body-var, system-ui, sans-serif);
  --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;

  /* Spacing (8px base) */
  --space-1: 0.25rem;  --space-2: 0.5rem;   --space-3: 0.75rem;
  --space-4: 1rem;     --space-6: 1.5rem;    --space-8: 2rem;
  --space-12: 3rem;    --space-16: 4rem;     --space-24: 6rem;

  /* Radius */
  --radius-sm: 0.25rem;  --radius-md: 0.5rem;
  --radius-lg: 1rem;     --radius-xl: 1.5rem;  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.15);
  --shadow-dramatic: 0 40px 80px -20px rgb(0 0 0 / 0.3);

  /* Motion */
  --duration-fast: 150ms;  --duration-normal: 300ms;  --duration-slow: 500ms;
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

Type Scale Ratios

| Scale | Ratio | Character | |-------|-------|-----------| | major-second | 1.125 | Professional, balanced | | minor-third | 1.200 | Clear hierarchy | | perfect-fourth | 1.333 | Bold, impactful | | golden-ratio | 1.618 | Dramatic, artistic |

Motion Guidelines

One well-orchestrated page-load with staggered reveals creates more delight than scattered micro-interactions:

/* Staggered reveal pattern */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal:nth-child(1) { animation: fade-up 400ms var(--ease-out) 0ms forwards; }
.reveal:nth-child(2) { animation: fade-up 400ms var(--ease-out) 80ms forwards; }
.reveal:nth-child(3) { animation: fade-up 400ms var(--ease-out) 160ms forwards; }

@keyframes fade-up {
  to { opacity: 1; transform: none; }
}

/* Hover with spring */
.card {
  transition: transform var(--duration-normal) var(--ease-spring),
              box-shadow var(--duration-normal) var(--ease-out);
}
.card:hover { transform: translateY(-4px); }

Accessibility Checklist

• [ ] Text contrast >= 4.5:1 (normal), >= 3:1 (large/UI)
• [ ] All interactive elements keyboard-focusable with visible indicator
• [ ] Semantic HTML (`, , , not ` everywhere)
• [ ] alt text on images; aria-label where context is visual-only
• [ ] Body text >= 16px, line-height >= 1.5, paragraph width = 44x44px

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

Layout Strategies

• Grid-breaking: position elements intentionally outside the 12-col grid
• Negative space: min-height: 70vh heroes, padding-block: 8rem sections
• Asymmetry: offset text/image pairs, diagonal dividers, rotated accents
• Layering: z-index stacking, overlapping sections, sticky sidebars

/* Diagonal section break */
.section-break {
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
  padding-bottom: 8rem;
}

Background and Texture Effects

/* Gradient mesh */
.bg-mesh {
  background:
    radial-gradient(ellipse 80% 80% at 20% -20%, hsl(var(--color-primary) / 0.3), transparent),
    radial-gradient(ellipse 60% 60% at 80% 120%, hsl(var(--color-accent) / 0.2), transparent),
    var(--color-surface);
}

/* Noise grain overlay */
.grain::after {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,..."); /* SVG noise filter */
  opacity: 0.04;
  pointer-events: none;
}

/* Dot grid pattern */
.dot-grid {
  background-image: radial-gradient(circle, currentColor 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.06;
}

Workflow

1. Define aesthetic direction -- commit to a specific tone before writing code
2. Set tokens -- colors, type, spacing, motion as CSS custom properties
3. Build layout skeleton -- sections, grid, negative space strategy
4. Apply typography -- display font for headings, body font for prose
5. Layer depth -- shadows, borders, backgrounds, textures
6. Add motion -- page-load stagger + key hover/focus transitions
7. Accessibility pass -- contrast, keyboard, semantics, reduced-motion

Additional Resources

• For component examples in Next.js v16 App Router, see [components.md](components.md)
• For font pairing recommendations and next/font usage, see [typography.md](typography.md)

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: kaynetik
• Source: kaynetik/skills
• License: MIT

Install and usage instructions live in the source repository linked above.