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141 lines
6.3 KiB
Markdown
141 lines
6.3 KiB
Markdown
# Design System Inspired by OpenAI
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> Category: AI & LLM
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> Calm, near-monochrome system anchored in deep teal-black with generous white space and editorial typography.
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## 1. Visual Theme & Atmosphere
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OpenAI's product surface reads like a research lab dressed for the public — clinical, restrained, deliberately quiet. The page background is a true white (`#ffffff`) layered against a near-black ink (`#0d0d0d`) with a subtle teal undertone, so even the text feels slightly cooled rather than aggressively dark. The result is a chromatic neutrality that puts model output, code, and prose front and center, not the chrome around them.
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The signature move is the use of **Söhne** (or its system stand-in `inter`) at restrained weights — 400 for body, 500 for nav and labels, 600 for emphasis — paired with **Signifier**, a contemporary serif used for editorial display. Where most AI brands lean futuristic, OpenAI's serif headlines give the product a quietly literary tone, as if every announcement is an essay.
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The shape system is uniformly soft: 8px–12px radii, 9999px pills for tags and chips, no harsh corners anywhere. Section transitions are denoted by whitespace rather than dividers; when borders appear they are `#e5e5e5` hairlines that read as the absence of color rather than its presence.
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**Key Characteristics:**
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- True white canvas (`#ffffff`) with deep teal-black ink (`#0d0d0d`)
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- Söhne / Inter at modest weights (400, 500, 600) — restraint over assertion
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- Signifier serif for editorial display headlines
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- Soft 8–12px radii everywhere; 9999px pills for chips
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- Hairline borders (`#e5e5e5`) used sparingly; whitespace as primary divider
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- Single-color illustrations in deep teal — no gradients in marks
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- Generous line-height (1.55–1.65) and tracking near zero
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## 2. Color Palette & Roles
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### Primary
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- **Pure White** (`#ffffff`): Primary background, card surface, button background.
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- **Ink Black** (`#0d0d0d`): Primary text, brand mark, primary CTA.
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- **Soft Black** (`#1a1a1a`): Secondary heading, alternative ink for non-critical text.
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### Surface & Background
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- **Mist** (`#fafafa`): Section break background, footer surface.
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- **Pearl** (`#f5f5f5`): Card surface, elevated panel.
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- **Cloud** (`#ececec`): Disabled background, divider tint.
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### Brand Accent
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- **OpenAI Teal** (`#10a37f`): Brand primary, link, highlight badge — the lone color in an otherwise neutral system.
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- **Teal Deep** (`#0a7a5e`): Hover and pressed state for the brand color.
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- **Teal Soft** (`#e8f5f0`): Surface tint for success badges, highlight callouts.
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### Neutrals & Text
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- **Graphite** (`#3c3c3c`): Body text, default reading color.
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- **Slate** (`#6e6e6e`): Secondary text, captions, metadata.
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- **Ash** (`#9b9b9b`): Tertiary text, placeholder, disabled label.
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- **Stone** (`#c4c4c4`): Decorative dividers, faint icons.
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### Semantic & Border
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- **Border Hairline** (`#e5e5e5`): Standard hairline separator.
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- **Border Soft** (`#ededed`): Card outline on white surface.
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- **Error** (`#ef4146`): Validation, destructive action.
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- **Warning** (`#f5a623`): Soft amber for advisory states.
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- **Info** (`#2563eb`): Informational link tone (used sparingly; teal still wins).
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## 3. Typography Rules
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### Font Family
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- **Display / Editorial**: `Signifier`, with fallback: `'Source Serif Pro', Georgia, serif`
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- **Body / UI**: `Söhne`, with fallback: `Inter, system-ui, -apple-system, 'Segoe UI', sans-serif`
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- **Code / Mono**: `Söhne Mono`, with fallback: `ui-monospace, 'JetBrains Mono', Menlo, Consolas, monospace`
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### Hierarchy
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| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
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|------|------|------|--------|-------------|----------------|-------|
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| Display | Signifier | 56px (3.5rem) | 400 | 1.08 | -0.02em | Editorial hero, announcement titles |
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| H1 | Söhne | 40px (2.5rem) | 600 | 1.15 | -0.01em | Page heading |
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| H2 | Söhne | 28px (1.75rem) | 600 | 1.2 | -0.005em | Section heading |
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| H3 | Söhne | 20px (1.25rem) | 600 | 1.3 | normal | Sub-section |
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| Body Large | Söhne | 18px (1.125rem) | 400 | 1.6 | normal | Lede paragraphs |
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| Body | Söhne | 16px (1rem) | 400 | 1.65 | normal | Standard reading text |
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| Body Small | Söhne | 14px (0.875rem) | 400 | 1.55 | normal | Card body, dense UI |
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| Caption | Söhne | 13px (0.8125rem) | 500 | 1.4 | 0.01em | Metadata, badges |
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| Label | Söhne | 12px (0.75rem) | 500 | 1.3 | 0.04em | Eyebrow, uppercase nav links |
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| Code | Söhne Mono | 14px (0.875rem) | 400 | 1.55 | normal | Code blocks, terminal output |
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### Principles
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- **Restraint as identity**: weights cap at 600; 700+ feels off-brand. Hierarchy comes from size and color, not weight.
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- **Serif for soul, sans for system**: Signifier appears only in editorial display moments. The product UI is sans-only.
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- **Negative tracking on display**: -0.02em on display sizes; tracking returns to zero by 16px.
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## 4. Component Stylings
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### Buttons
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**Primary**
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- Background: `#0d0d0d`
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- Text: `#ffffff`
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- Padding: 10px 18px
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- Radius: 9999px (full pill) on chips, 12px on rectangular CTAs
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- Hover: `#1a1a1a` background
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- Use: Primary CTA, "Try ChatGPT", "Sign in"
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**Secondary**
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- Background: `#ffffff`
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- Text: `#0d0d0d`
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- Border: 1px solid `#e5e5e5`
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- Padding: 10px 18px
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- Radius: 12px
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- Hover: background `#fafafa`, border `#d4d4d4`
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**Brand Accent**
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- Background: `#10a37f`
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- Text: `#ffffff`
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- Padding: 10px 18px
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- Radius: 12px
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- Hover: `#0a7a5e`
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- Use: Highlighted upgrade CTA, success path
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### Cards
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- Background: `#ffffff`
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- Border: 1px solid `#ededed`
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- Radius: 16px
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- Padding: 24px–32px
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- Shadow: none by default; on hover `0 4px 16px rgba(13,13,13,0.06)`
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### Inputs
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- Background: `#ffffff`
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- Border: 1px solid `#e5e5e5`
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- Radius: 12px
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- Padding: 12px 14px
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- Focus: border `#10a37f`, ring `0 0 0 3px rgba(16,163,127,0.12)`
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### Pills & Tags
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- Background: `#f5f5f5`
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- Text: `#3c3c3c`
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- Padding: 4px 10px
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- Radius: 9999px
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- Font: 12px / 500
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## 5. Spacing & Layout
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- **Base unit**: 4px. Scale: 4, 8, 12, 16, 24, 32, 48, 64, 96, 128.
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- **Container**: max-width 1200px, 24px gutter on mobile, 48px on desktop.
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- **Section rhythm**: 96–128px vertical between major sections; 64px on mobile.
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- **Grid**: 12-column desktop, 4-column mobile, 24px gap.
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## 6. Motion
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- **Duration**: 150–220ms for hover; 280–360ms for layout transitions.
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- **Easing**: `cubic-bezier(0.16, 1, 0.3, 1)` (smooth out) for entrances.
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- **Restraint**: no parallax, no scroll-jacking. Subtle fade and translate only.
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