Premium Utilitarian Minimalism & Editorial UI
Protocol for generating highly refined, ultra-minimalist, "document-style" web interfaces analogous to top-tier workspace platforms. Enforces high-contrast warm monochrome palette, bespoke typographic hierarchies, meticulous macro-whitespace, bento-grid layouts, and ultra-flat component architecture with deliberate muted pastel accents.
Based on: Apple Notes, Linear, Notion, Basecamp, iA Writer, and premium editorial systems.
1. Absolute Negative Constraints (Banned)
- NO Inter, Roboto, or Open Sans typefaces
- NO Lucide, Feather, or standard Heroicons (use Phosphor Bold/Fill)
- NO Tailwind default drop shadows (
shadow-md,shadow-lg,shadow-xl) - NO primary colored backgrounds for sections
- NO gradients, neon colors, or 3D glassmorphism (beyond subtle navbar blur)
- NO
rounded-fullfor large containers, cards, or primary buttons - NO emojis anywhere
- NO "John Doe", "Acme Corp", "Lorem Ipsum" — realistic, contextual content
- NO AI copywriting clichés: "Elevate", "Seamless", "Unleash", "Next-Gen"
- NO centered Hero sections — left-aligned text
2. Typographic Architecture
- Primary Sans-Serif:
'SF Pro Display', 'Geist Sans', 'Helvetica Neue', 'Switzer', sans-serif - Editorial Serif (Hero Headings):
'Lyon Text', 'Newsreader', 'Playfair Display', 'Instrument Serif'. Tight tracking (-0.02emto-0.04em). Tight line-height (1.1). - Monospace (Code, Keystrokes):
'Geist Mono', 'SF Mono', 'JetBrains Mono' - Text Colors: Never
#000000. Use off-black (#111111,#2F3437). Secondary:#787774. Line-height1.6.
3. Color Palette (Warm Monochrome + Muted Pastels)
- Canvas:
#FFFFFFor#F7F6F3/#FBFBFA - Surface (Cards):
#FFFFFFor#F9F9F8 - Borders:
#EAEAEAorrgba(0,0,0,0.06)— exactly 1px solid - Accents (muted pastels only):
- Pale Red: bg
#FDEBEC, text#9F2F2D - Pale Blue: bg
#E1F3FE, text#1F6C9F - Pale Green: bg
#EDF3EC, text#346538 - Pale Yellow: bg
#FBF3DB, text#956400
- Pale Red: bg
CSS vanilla alternative (shokunin improvement): Prefer CSS custom properties over Tailwind for pure editorial projects:
:root {
--canvas: #F7F6F3;
--surface: #FFFFFF;
--border: #EAEAEA;
--text: #111111;
--text-secondary: #787774;
}
4. Component Specifications
Bento Box Feature Grids
- Asymmetrical CSS Grid.
border: 1px solid #EAEAEA. Radius:8pxto12pxmax. - Internal padding:
24pxto40px. - Labels placed OUTSIDE and BELOW cards.
Primary CTAs
- Background
#111111, text#FFFFFF. Radius4pxto6px. No box-shadow. - Hover:
background: #333333ortransform: scale(0.98). Transition:200ms ease-out. - Active:
transform: scale(0.97).160ms.
Tags & Status Badges
- Pill-shaped (
border-radius: 9999px),text-xsuppercase,tracking: 0.05em. - Background: muted pastels from palette above.
Accordions (FAQ)
- NO container boxes. Separated by
border-bottom: 1px solid #EAEAEA. - Clean
+/−toggle icon.
Keystroke Micro-UIs
<kbd>withborder: 1px solid #EAEAEA,border-radius: 4px,background: #F7F6F3. Monospace.
Faux-OS Window Chrome
- Minimalist container with white top bar + three small light gray macOS circles.
5. Iconography & Imagery
- Icons: Phosphor Icons (Bold or Fill). Consistent stroke width.
- Illustrations: Monochromatic, rough continuous-line ink sketches on white background. Single offset geometric shape in muted pastel.
- Photography: Desaturated, warm tone. Subtle grain overlay (
opacity: 0.04). Never oversaturated stock. Placeholder:https://picsum.photos/seed/{context}/1200/800. - Hero Backgrounds: Subtle full-width imagery at very low opacity, soft radial light spots (
opacity: 0.03), or minimal geometric line patterns.
6. Subtle Motion (Quiet Sophistication)
- Scroll Entry:
translateY(12px)+opacity: 0→ resolve over600mswithcubic-bezier(0.16, 1, 0.3, 1). UseIntersectionObserver. - Hover: Cards lift with ultra-subtle shadow (
box-shadow: 0 2px 8px rgba(0,0,0,0.04)over200ms). Buttons:scale(0.98)on:active. - Staggered Reveals:
animation-delay: calc(var(--index) * 80ms). Never mount everything at once. - Background Ambient: Single slow-moving radial blob (
20s+,opacity: 0.02-0.04).position: fixed; pointer-events: none. - Performance: Only
transform+opacity. No layout-triggering properties. prefers-reduced-motion(shokunin improvement): Mandatory on every animation.
7. Execution Protocol
- Establish macro-whitespace:
py-24topy-32between sections. - Constrain content to
max-w-4xlormax-w-5xl. - Apply typographic hierarchy + monochromatic color immediately.
- Every card, divider, border:
1px solid #EAEAEA. - Add scroll-entry animations to all major content blocks.
- Visual depth through imagery, ambient gradients, or subtle textures — no empty flat backgrounds.
- Mobile collapse: single-column
w-full px-4below768px.min-h-[100dvh]for full-screen.
Error Handling
| Error | Fix |
|---|---|
| Scroll jank from grain overlay | Move to position: fixed; pointer-events: none |
| iOS Safari layout jump | min-h-[100dvh] instead of h-screen |
| Bento cards break on mobile | Single column + remove asymmetric spans below 768px |
| Accent color too vibrant | Check palette: muted pastels only. Saturation < 40%. |
9. Pre-Output Checklist
- No banned items from Section 1
- Warm monochrome palette applied
- Muted pastels for accents only
- Typography: serif headline + sans body
- All borders:
1px solid #EAEAEA - No gradients, no heavy shadows
- No
rounded-fullon large elements - Scroll entries on all content blocks
- Mobile collapse: single-column,
min-h-[100dvh] -
prefers-reduced-motionon all animations - No emojis, no AI clichés, no generic names
- Overall reads as "editorial, calm, premium" — not "template"
Workflow
- Establish canvas — set
--canvas: #F7F6F3, constrain content tomax-w-4xl/max-w-5xl, macro-whitespacepy-24topy-32between sections. - Apply typographic hierarchy — serif headline with tight tracking/line-height, sans body at
text-base text-[#787774] leading-relaxed, monospace for code. - Layer the monochrome system — every card, divider, and UI surface gets
1px solid #EAEAEA. Off-black text#111111. White or near-white surfaces. - Place muted pastel accents sparingly — only for badges, tags, status indicators. Pale red, blue, green, or yellow backgrounds with matching desaturated text.
- Add subtle motion — scroll-entry reveal on content blocks (600ms cubic-bezier(0.16, 1, 0.3, 1)), hover scale(0.98) on buttons, staggered child reveals at 80ms intervals.
- Collapse for mobile — single-column
w-full px-4below768px. Forcemin-h-[100dvh]for full-screen sections. - Verify editorial feel — no gradients, no heavy shadows, no
rounded-fullon large elements, no centering, no emojis, no AI clichés.
Anti-Patterns
| Pattern | Problem | Fix |
|---|---|---|
| Using Inter, Roboto, or Open Sans | Default AI font choices, no character | Use SF Pro Display, Geist Sans, or Switzer |
| Centered hero sections with stacked text | Looks like every template | Left-align hero text. Use asymmetric layout. |
rounded-full on cards or large containers |
Soft, generic pill aesthetic | Max 12px radius. Many elements at 4px–8px. |
Tailwind shadow-md/shadow-lg |
Heavy, muddy, cheap-looking | No box-shadow on cards. Ultra-subtle 0 2px 8px rgba(0,0,0,0.04) on hover only. |
| Full-saturation accent colors | Disrupts the monochrome harmony | Pastels only: saturation below 40%. Use the 4 preset pale palettes. |
| Gradient backgrounds on sections | Breaks the flat, editorial aesthetic | Solid #F7F6F3 or #FBFBFA canvas. Subtle grain overlay at opacity 0.03–0.04. |
| "John Doe", "Acme Corp", placeholder names | Instantly signals template/AI-generated | Use realistic, contextual names and data. |
| Stock photography with high saturation | Clashes with monochrome system | Desaturated, warm-toned images. Subtle grain overlay. Or use picsum.photos. |
Sources
- Apple Human Interface Guidelines — Typography and Color (developer.apple.com/design)
- Linear — "Linear Method: Designing in the Open" (linear.app/method)
- iA Writer — "The Philosophy of iA Writer" (ia.net/writer)
- Basecamp — "Shape Up: Stop Running in Circles" (basecamp.com/shapeup)
- Notion — Design System (notion.so/design)
- Erik Spiekermann — "Stop Stealing Sheep & Find Out How Type Works" (Adobe Press)
- Robert Bringhurst — "The Elements of Typographic Style" (Hartley & Marks)
- Josef Müller-Brockmann — "Grid Systems in Graphic Design" (Niggli Verlag)
Checklist
- Skill loads without errors in the AI agent
- YAML frontmatter is valid (description, compatibility, audience)
- Workflow section provides clear step-by-step instructions
- Error handling section covers common failure modes
- All referenced files (references/, scripts/, assets/) exist
- Skill triggers correctly for intended use cases
- No broken links or missing resources