source

---
name: xAI
description:
  Dark-first brutalist minimalism — GeistMono at 320px display scale,
  universalSans body, uppercase tracked buttons, sharp corners, zero shadows.
originalFonts:
  primary: "GeistMono"
  fallbacks:
    - "universalSans"
    - "universalSans Fallback"
    - "ui-monospace"
    - "SFMono-Regular"
    - "Roboto Mono"
    - "Menlo"
    - "Monaco"
    - "Liberation Mono"
    - "DejaVu Sans Mono"
    - "Courier New"
colors:
  background: "#1F2228"
  surface: "rgba(255, 255, 255, 0.05)"
  ink: "#FFFFFF"
  accent: "#FFFFFF"
  pure-white: "#FFFFFF"
  dark-background: "#1F2228"
  white-default: "#FFFFFF"
  white-muted: "rgba(255, 255, 255, 0.5)"
  white-subtle: "rgba(255, 255, 255, 0.2)"
  ring-blue: "rgba(59, 130, 246, 0.5)"
  surface-elevated: "rgba(255, 255, 255, 0.05)"
  surface-hover: "rgba(255, 255, 255, 0.08)"
  border: "rgba(255, 255, 255, 0.1)"
  border-default: "rgba(255, 255, 255, 0.1)"
  border-strong: "rgba(255, 255, 255, 0.2)"
  text-primary: "#FFFFFF"
  text-secondary: "rgba(255, 255, 255, 0.7)"
  text-tertiary: "rgba(255, 255, 255, 0.5)"
  text-quaternary: "rgba(255, 255, 255, 0.3)"
typography:
  h1:
    family: "JetBrains Mono"
    size: "20rem"
    weight: 300
    lineHeight: 1.5
  body:
    family: "Inter"
    size: "1rem"
    weight: 400
    lineHeight: 1.5
  code:
    family: "JetBrains Mono"
    size: "0.88rem"
    weight: 400
    lineHeight: 1.43
spacing:
  xs: "0.25rem"
  sm: "0.5rem"
  md: "1.5rem"
  lg: "3rem"
  xl: "6rem"
rounded:
  sm: "0px"
  md: "0px"
  lg: "4px"
  xl: "4px"
shadows:
  sm: "none"
  md: "none"
components:
  button-primary:
    background: "#FFFFFF"
    color: "{colors.dark-background}"
    border: "1px solid #FFFFFF"
    radius: "{rounded.sm}"
    padding: "0.75rem 1.5rem"
  button-secondary:
    background: "transparent"
    color: "#FFFFFF"
    border: "1px solid {colors.border-strong}"
    radius: "{rounded.sm}"
    padding: "0.75rem 1.5rem"
  card:
    background: "rgba(255, 255, 255, 0.03)"
    border: "1px solid {colors.border}"
    radius: "{rounded.sm}"
    padding: "1.5rem"
  input:
    background: "transparent"
    color: "#FFFFFF"
    border: "1px solid {colors.border-strong}"
    radius: "{rounded.sm}"
    padding: "0.5rem 0.75rem"
---

<!-- source: VoltAgent/awesome-design-md @ 80bbbc2 (MIT) — see ATTRIBUTION.md -->

# Design System Inspiration of xAI

## 1. Visual Theme & Atmosphere

xAI's website is a masterclass in dark-first, monospace-driven brutalist
minimalism -- a design system that feels like it was built by engineers who
understand that restraint is the ultimate form of sophistication. The entire
experience is anchored to an almost-black background (`#1f2228`) with pure white
text (`#ffffff`), creating a high-contrast, terminal-inspired aesthetic that
signals deep technical credibility. There are no gradients, no decorative
illustrations, no color accents competing for attention. This is a site that
communicates through absence.

The typographic system is split between two carefully chosen typefaces.
`GeistMono` (Vercel's monospace font) handles display-level headlines at an
extraordinary 320px with weight 300, and also serves as the button typeface in
uppercase with tracked-out letter-spacing (1.4px). `universalSans` handles all
body and secondary heading text with a clean, geometric sans-serif voice. The
monospace-as-display-font choice is the defining aesthetic decision -- it
positions xAI not as a consumer product but as infrastructure, as something
built by people who live in terminals.

The spacing system operates on an 8px base grid with values concentrated at the
small end (4px, 8px, 24px, 48px), reflecting a dense, information-focused layout
philosophy. Border radius is minimal -- the site barely rounds anything,
maintaining sharp, architectural edges. There are no decorative shadows, no
gradients, no layered elevation. Depth is communicated purely through contrast
and whitespace.

**Key Characteristics:**

- Pure dark theme: `#1f2228` background with `#ffffff` text -- no gray middle
  ground
- GeistMono at extreme display sizes (320px, weight 300) -- monospace as luxury
- Uppercase monospace buttons with 1.4px letter-spacing -- technical, commanding
- universalSans for body text at 16px/1.5 and headings at 30px/1.2 -- clean
  contrast
- Zero decorative elements: no shadows, no gradients, no colored accents
- 8px spacing grid with a sparse, deliberate scale
- Heroicons SVG icon system -- minimal, functional
- Tailwind CSS with arbitrary values -- utility-first engineering approach

## 2. Color Palette & Roles

### Primary

- **Pure White** (`#ffffff`): The singular text color, link color, and all
  foreground elements. In xAI's system, white is not a background -- it is the
  voice.
- **Dark Background** (`#1f2228`): The canvas. A warm near-black with a subtle
  blue undertone (not pure black, not neutral gray). This specific hue prevents
  the harsh eye strain of `#000000` while maintaining deep darkness.

### Interactive

- **White Default** (`#ffffff`): Link and interactive element color in default
  state.
- **White Muted** (`rgba(255, 255, 255, 0.5)`): Hover state for links -- a
  deliberate dimming rather than brightening, which is unusual and distinctive.
- **White Subtle** (`rgba(255, 255, 255, 0.2)`): Borders, dividers, and subtle
  surface treatments.
- **Ring Blue** (`rgb(59, 130, 246) / 0.5`): Tailwind's default focus ring color
  (`--tw-ring-color`), used for keyboard accessibility focus states.

### Surface & Borders

- **Surface Elevated** (`rgba(255, 255, 255, 0.05)`): Subtle card backgrounds
  and hover surfaces -- barely visible lift.
- **Surface Hover** (`rgba(255, 255, 255, 0.08)`): Slightly more visible hover
  state for interactive containers.
- **Border Default** (`rgba(255, 255, 255, 0.1)`): Standard border for cards,
  dividers, and containers.
- **Border Strong** (`rgba(255, 255, 255, 0.2)`): Emphasized borders for active
  states and button outlines.

### Functional

- **Text Primary** (`#ffffff`): All headings, body text, labels.
- **Text Secondary** (`rgba(255, 255, 255, 0.7)`): Descriptions, captions,
  supporting text.
- **Text Tertiary** (`rgba(255, 255, 255, 0.5)`): Muted labels, placeholder
  text, timestamps.
- **Text Quaternary** (`rgba(255, 255, 255, 0.3)`): Disabled text, very subtle
  annotations.

## 3. Typography Rules

### Font Family

- **Display / Buttons**: `GeistMono`, with fallback:
  `ui-monospace, SFMono-Regular, Roboto Mono, Menlo, Monaco, Liberation Mono, DejaVu Sans Mono, Courier New`
- **Body / Headings**: `universalSans`, with fallback: `universalSans Fallback`

### Hierarchy

| Role            | Font          | Size           | Weight | Line Height  | Letter Spacing | Transform | Notes                           |
| --------------- | ------------- | -------------- | ------ | ------------ | -------------- | --------- | ------------------------------- |
| Display Hero    | GeistMono     | 320px (20rem)  | 300    | 1.50         | normal         | none      | Extreme scale, monospace luxury |
| Section Heading | universalSans | 30px (1.88rem) | 400    | 1.20 (tight) | normal         | none      | Clean sans-serif contrast       |
| Body            | universalSans | 16px (1rem)    | 400    | 1.50         | normal         | none      | Standard reading text           |
| Button          | GeistMono     | 14px (0.88rem) | 400    | 1.43         | 1.4px          | uppercase | Tracked monospace, commanding   |
| Label / Caption | universalSans | 14px (0.88rem) | 400    | 1.50         | normal         | none      | Supporting text                 |
| Small / Meta    | universalSans | 12px (0.75rem) | 400    | 1.50         | normal         | none      | Timestamps, footnotes           |

### Principles

- **Monospace as display**: GeistMono at 320px is not a gimmick -- it is the
  brand statement. The fixed-width characters at extreme scale create a
  rhythmic, architectural quality that no proportional font can achieve.
- **Light weight at scale**: Weight 300 for the 320px headline prevents the
  monospace from feeling heavy or brutish at extreme sizes. It reads as precise,
  not overwhelming.
- **Uppercase buttons**: All button text is uppercase GeistMono with 1.4px
  letter-spacing. This creates a distinctly technical, almost command-line
  aesthetic for interactive elements.
- **Sans-serif for reading**: universalSans at 16px/1.5 provides excellent
  readability for body content, creating a clean contrast against the monospace
  display elements.
- **Two-font clarity**: The system uses exactly two typefaces with clear roles
  -- monospace for impact and interaction, sans-serif for information and
  reading. No overlap, no ambiguity.

## 4. Component Stylings

### Buttons

**Primary (White on Dark)**

- Background: `#ffffff`
- Text: `#1f2228`
- Padding: 12px 24px
- Radius: 0px (sharp corners)
- Font: GeistMono 14px weight 400, uppercase, letter-spacing 1.4px
- Hover: `rgba(255, 255, 255, 0.9)` background
- Use: Primary CTA ("TRY GROK", "GET STARTED")

**Ghost / Outlined**

- Background: transparent
- Text: `#ffffff`
- Padding: 12px 24px
- Radius: 0px
- Border: `1px solid rgba(255, 255, 255, 0.2)`
- Font: GeistMono 14px weight 400, uppercase, letter-spacing 1.4px
- Hover: `rgba(255, 255, 255, 0.05)` background
- Use: Secondary actions ("LEARN MORE", "VIEW API")

**Text Link**

- Background: none
- Text: `#ffffff`
- Font: universalSans 16px weight 400
- Hover: `rgba(255, 255, 255, 0.5)` -- dims on hover
- Use: Inline links, navigation items

### Cards & Containers

- Background: `rgba(255, 255, 255, 0.03)` or transparent
- Border: `1px solid rgba(255, 255, 255, 0.1)`
- Radius: 0px (sharp) or 4px (subtle)
- Shadow: none -- xAI does not use box shadows
- Hover: border shifts to `rgba(255, 255, 255, 0.2)`

### Navigation

- Dark background matching page (`#1f2228`)
- Brand logotype: white text, left-aligned
- Links: universalSans 14px weight 400, `#ffffff` text
- Hover: `rgba(255, 255, 255, 0.5)` text color
- CTA: white primary button, right-aligned
- Mobile: hamburger toggle

### Badges / Tags

**Monospace Tag**

- Background: transparent
- Text: `#ffffff`
- Padding: 4px 8px
- Border: `1px solid rgba(255, 255, 255, 0.2)`
- Radius: 0px
- Font: GeistMono 12px uppercase, letter-spacing 1px

### Inputs & Forms

- Background: transparent or `rgba(255, 255, 255, 0.05)`
- Border: `1px solid rgba(255, 255, 255, 0.2)`
- Radius: 0px
- Focus: ring with `rgb(59, 130, 246) / 0.5`
- Text: `#ffffff`
- Placeholder: `rgba(255, 255, 255, 0.3)`
- Label: `rgba(255, 255, 255, 0.7)`, universalSans 14px

## 5. Layout Principles

### Spacing System

- Base unit: 8px
- Scale: 4px, 8px, 24px, 48px
- The scale is deliberately sparse -- xAI avoids granular spacing distinctions,
  preferring large jumps that create clear visual hierarchy through whitespace
  alone

### Grid & Container

- Max content width: approximately 1200px
- Hero: full-viewport height with massive centered monospace headline
- Feature sections: simple vertical stacking with generous section padding
  (48px-96px)
- Two-column layouts for feature descriptions at desktop
- Full-width dark sections maintain the single dark background throughout

### Whitespace Philosophy

- **Extreme generosity**: xAI uses vast amounts of whitespace. The 320px
  headline with 48px+ surrounding padding creates a sense of emptiness that is
  itself a design statement -- the content is so important it needs room to
  breathe.
- **Vertical rhythm over horizontal density**: Content stacks vertically with
  large gaps between sections rather than packing horizontally. This creates a
  scroll-driven experience that feels deliberate and cinematic.
- **No visual noise**: The absence of decorative elements, borders between
  sections, and color variety means whitespace is the primary structural tool.

### Breakpoints

- 2000px, 1536px, 1280px, 1024px, 1000px, 768px, 640px
- Tailwind responsive modifiers drive breakpoint behavior

### Border Radius Scale

- Sharp (0px): Primary treatment for buttons, cards, inputs -- the default
- Subtle (4px): Occasional softening on secondary containers
- The near-zero radius philosophy is core to the brand's brutalist identity

## 6. Depth & Elevation

| Level                 | Treatment                                | Use                           |
| --------------------- | ---------------------------------------- | ----------------------------- |
| Flat (Level 0)        | No shadow, no border                     | Page background, body content |
| Surface (Level 1)     | `rgba(255,255,255,0.03)` background      | Subtle card surfaces          |
| Bordered (Level 2)    | `1px solid rgba(255,255,255,0.1)` border | Cards, containers, dividers   |
| Active (Level 3)      | `1px solid rgba(255,255,255,0.2)` border | Hover states, active elements |
| Focus (Accessibility) | `ring` with `rgb(59,130,246)/0.5`        | Keyboard focus indicator      |

**Elevation Philosophy**: xAI rejects the conventional shadow-based elevation
system entirely. There are no box-shadows anywhere on the site. Instead, depth
is communicated through three mechanisms: (1) opacity-based borders that
brighten on interaction, creating a sense of elements "activating" rather than
lifting; (2) extremely subtle background opacity shifts (`0.03` to `0.08`) that
create barely-perceptible surface differentiation; and (3) the massive scale
contrast between the 320px display type and 16px body text, which creates
typographic depth. This is elevation through contrast and opacity, not through
simulated light and shadow.

## 7. Do's and Don'ts

### Do

- Use `#1f2228` as the universal background -- never pure black `#000000`
- Use GeistMono for all display headlines and button text -- monospace IS the
  brand
- Apply uppercase + 1.4px letter-spacing to all button labels
- Use weight 300 for the massive display headline (320px)
- Keep borders at `rgba(255, 255, 255, 0.1)` -- barely visible, not absent
- Dim interactive elements on hover to `rgba(255, 255, 255, 0.5)` -- the reverse
  of convention
- Maintain sharp corners (0px radius) as the default -- brutalist precision
- Use universalSans for all body and reading text at 16px/1.5

### Don't

- Don't use box-shadows -- xAI has zero shadow elevation
- Don't introduce color accents beyond white and the dark background -- the
  monochromatic palette is sacred
- Don't use large border-radius (8px+, pill shapes) -- the sharp edge is
  intentional
- Don't use bold weights (600-700) for headlines -- weight 300-400 only
- Don't brighten elements on hover -- xAI dims to `0.5` opacity instead
- Don't add decorative gradients, illustrations, or color blocks
- Don't use proportional fonts for buttons -- GeistMono uppercase is mandatory
- Don't use colored status indicators unless absolutely necessary -- keep
  everything in the white/dark spectrum

## 8. Responsive Behavior

### Breakpoints

| Name         | Width       | Key Changes                                           |
| ------------ | ----------- | ----------------------------------------------------- |
| Mobile       | <640px      | Single column, hero headline scales dramatically down |
| Small Tablet | 640-768px   | Slight increase in padding                            |
| Tablet       | 768-1024px  | Two-column layouts begin, heading sizes increase      |
| Desktop      | 1024-1280px | Full layout, generous whitespace                      |
| Large        | 1280-1536px | Wider containers, more breathing room                 |
| Extra Large  | 1536-2000px | Maximum content width, centered                       |
| Ultra        | >2000px     | Content stays centered, extreme margins               |

### Touch Targets

- Buttons use 12px 24px padding for comfortable touch
- Navigation links spaced with 24px gaps
- Minimum tap target: 44px height
- Mobile: full-width buttons for easy thumb reach

### Collapsing Strategy

- Hero: 320px monospace headline scales down dramatically (to ~48px-64px on
  mobile)
- Navigation: horizontal links collapse to hamburger menu
- Feature sections: two-column to single-column stacking
- Section padding: 96px -> 48px -> 24px across breakpoints
- Massive display type is the first thing to resize -- it must remain impactful
  but not overflow

### Image Behavior

- Minimal imagery -- the site relies on typography and whitespace
- Any product screenshots maintain sharp corners
- Full-width media scales proportionally with viewport

## 9. Agent Prompt Guide

### Quick Color Reference

- Background: Dark (`#1f2228`)
- Text Primary: White (`#ffffff`)
- Text Secondary: White 70% (`rgba(255, 255, 255, 0.7)`)
- Text Muted: White 50% (`rgba(255, 255, 255, 0.5)`)
- Text Disabled: White 30% (`rgba(255, 255, 255, 0.3)`)
- Border Default: White 10% (`rgba(255, 255, 255, 0.1)`)
- Border Strong: White 20% (`rgba(255, 255, 255, 0.2)`)
- Surface Subtle: White 3% (`rgba(255, 255, 255, 0.03)`)
- Surface Hover: White 8% (`rgba(255, 255, 255, 0.08)`)
- Focus Ring: Blue (`rgb(59, 130, 246)` at 50% opacity)
- Button Primary BG: White (`#ffffff`), text Dark (`#1f2228`)

### Example Component Prompts

- "Create a hero section on #1f2228 background. Headline in GeistMono at 72px
  weight 300, color #ffffff, centered. Subtitle in universalSans 18px weight
  400, rgba(255,255,255,0.7), max-width 600px centered. Two buttons: primary
  (white bg, #1f2228 text, 0px radius, GeistMono 14px uppercase, 1.4px
  letter-spacing, 12px 24px padding) and ghost (transparent bg, 1px solid
  rgba(255,255,255,0.2), white text, same font treatment)."
- "Design a card: transparent or rgba(255,255,255,0.03) background, 1px solid
  rgba(255,255,255,0.1) border, 0px radius, 24px padding. No shadow. Title in
  universalSans 22px weight 400, #ffffff. Body in universalSans 16px weight 400,
  rgba(255,255,255,0.7), line-height 1.5. Hover: border changes to
  rgba(255,255,255,0.2)."
- "Build navigation: #1f2228 background, full-width. Brand text left (GeistMono
  14px uppercase). Links in universalSans 14px #ffffff with hover to
  rgba(255,255,255,0.5). White primary button right-aligned (GeistMono 14px
  uppercase, 1.4px letter-spacing)."
- "Create a form: dark background #1f2228. Label in universalSans 14px
  rgba(255,255,255,0.7). Input with transparent bg, 1px solid
  rgba(255,255,255,0.2) border, 0px radius, white text 16px universalSans.
  Focus: blue ring rgb(59,130,246)/0.5. Placeholder: rgba(255,255,255,0.3)."
- "Design a monospace tag/badge: transparent bg, 1px solid
  rgba(255,255,255,0.2), 0px radius, GeistMono 12px uppercase, 1px
  letter-spacing, white text, 4px 8px padding."

### Iteration Guide

1. Always start with `#1f2228` background -- never use pure black or gray
   backgrounds
2. GeistMono for display and buttons, universalSans for everything else -- never
   mix these roles
3. All buttons must be GeistMono uppercase with 1.4px letter-spacing -- this is
   non-negotiable
4. No shadows, ever -- depth comes from border opacity and background opacity
   only
5. Borders are always white with low opacity (0.1 default, 0.2 for emphasis)
6. Hover behavior dims to 0.5 opacity rather than brightening -- the reverse of
   most systems
7. Sharp corners (0px) by default -- only use 4px for specific secondary
   containers
8. Body text at 16px universalSans with 1.5 line-height for comfortable reading
9. Generous section padding (48px-96px) -- let content breathe in the darkness
10. The monochromatic white-on-dark palette is absolute -- resist adding color
    unless critical for function