uber.com

DESIGN.md

Narrative design system document — paste directly into Claude Code, Cursor, or Bolt.

---
version: alpha
name: uber.com
description: "Light product system built on #ffffff with #ffffff as the primary CTA accent. Type anchored in UberMove at 36px / weight 700. Extracted automatically from https://uber.com/ — rendered styles via getComputedStyle() + CSS custom properties (token-only values may not be painted)."
narrative: |
  uber.com is built on a pure-white canvas (rgb(255,255,255)).
  The system uses rgb(255, 255, 255) as the singular interactive color.
  Fully-rounded CTAs (999px) signal a friendly, tactile interaction model alongside UberMove as the primary typeface.
  A restrained elevation system (3 distinct shadows) — shadows reserved for the few elements that must lift off the page.
  Interactions are smoothed by transitions across many elements, with little or no keyframe animation.

colors:
  background: "#ffffff"
  surface-1: "#efefef"
  surface-2: "#f3f3f3"
  ink-subtle: "rgba(107, 107, 107, 0.65)"
  primary: "#ffffff"
  on-primary: "#111111"
  primary-hover: "#9dcdd6"
  hairline: "#5e5e5e"
  primary-focus: "#276ef1"
  semantic-error: "rgba(78, 6, 0, 0.75)"
  semantic-success: "rgba(1, 60, 20, 0.75)"
  semantic-warning: "rgba(80, 32, 2, 0.8)"

typography:
  display-xl:
    fontFamily: "UberMove, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 52px
    fontWeight: 700
    lineHeight: 1.23
    letterSpacing: 0
  display-md:
    fontFamily: "UberMove, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 20px
    fontWeight: 700
    lineHeight: 1.4
    letterSpacing: 0
  body:
    fontFamily: "UberMove, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 16px
    fontWeight: 400
    lineHeight: normal
    letterSpacing: 0
  body-sm:
    fontFamily: "UberMove, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 24px
    fontWeight: 400
    lineHeight: 4.67
    letterSpacing: 0
  button:
    fontFamily: "UberMoveText, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.5
    letterSpacing: 0

rounded:
  none: 0px
  xs: 6px
  sm: 8px
  md: 12px
  lg: 16px
  xl: 999px

spacing:
  xxs: 2px
  xs: 10px
  sm: 12px
  md: 14px
  lg: 48px
  xl: 64px
  xxl: 80px

components:
  button-pill:
    backgroundColor: "#000000"
    textColor: "{colors.primary}"
    typography: "{typography.body}"
    rounded: "{rounded.xl}"
    padding: 10px 12px
  button-ghost:
    backgroundColor: "transparent"
    textColor: "#000000"
    typography: "{typography.body}"
    rounded: "{rounded.sm}"
  button-ghost-2:
    backgroundColor: "#000000"
    textColor: "{colors.primary}"
    typography: "{typography.body}"
    rounded: "{rounded.sm}"
    padding: 14px 25px
  input-text-input:
    backgroundColor: "transparent"
    textColor: "#000000"
    typography: "{typography.body}"
    rounded: "{rounded.none}"
    padding: 10px 14px 10px 48px
  navigation-main-nav:
    backgroundColor: "#000000"
    typography: "{typography.body}"
    rounded: "{rounded.none}"
    padding: 12px 0px

extracted_at: "2026-06-11T05:02:50.904Z"
completeness: 68
scoreVersion: "v2"

---

# Design System — uber.com
> Extracted automatically by Prism from https://uber.com
> Date: 2026-06-11
> Viewport: Desktop 1440x900 + Mobile 390x844
> Values are extracted, not hand-written: rendered styles via getComputedStyle() + colors declared in CSS custom properties (token-only values are marked `(token)` and may not be painted).


## 0. Design DNA

**Density**: sparse  |  **Motion**: subtle  |  **Weight**: heavy  |  **Aesthetic**: soft-rounded

| Dimension | Value | Signal |
|---|---|---|
| Canvas | neutral | `#ffffff` |
| Type posture | sans-led (UberMoveText) | "Explore what you can do with U" |
| Color assertion | dual-accent | #ffffff |
| Whitespace | sparse | section rhythm 72px |
| Interaction | subtle | 1 keyframes, 10 transitions |
| Radius language | soft-pill | from token scale |

**Prism fingerprint**: `neutral-canvas · sans-display · dual-accent · soft-pill · subtle-motion`

> **🤖 TL;DR for AI agents** (read this first — saves you scanning the full doc):
>
> - **Canvas**: `rgb(255,255,255)` is the page background. Every component composits against this.
> - **Accent**: `rgb(255, 255, 255)` for primary CTAs ONLY. Never decorative.
> - **Body type**: 16px (token: `typography.body`). Default for ALL text not in a heading role.
> - **Section rhythm**: 72px between major bands. Card padding: 48px.
> - **Default radius**: 8px on buttons/inputs. Pills (`9999px`) only for icon-buttons or status chips.
>
> **Before generating UI**: import this DESIGN.md, scan §2 (Color Palette) + §4 (Components) + §10 (Agent Guide). Skip §11–12 unless extending.

## 1. Visual Theme & Atmosphere

**Signature:** a multi-stop brand gradient (a hero mesh/ribbon — usually an SVG or image, not a CSS background) — colours: #220ba5, #4466fc, #4c13d4, #a245f7, #526efd. This is the brand's most recognizable visual — reproduce it, don't replace it with a generic card or flat panel.

uber.com uses a pure-white canvas (`#ffffff`), letting typography, color and imagery carry the visual weight. 

Headlines are set in **UberMove**, a sans-serif display face (the dominant type signature, e.g. "Explore what you can do with Uber" at 36px). Body text is set in **UberMoveText**. Headlines use weight 700 for confident, assertive presence — the brand wants to be heard. 

Body text reads in Pure Black (`#000000`) (contrast ratio 21.0:1, well above WCAG AA). **Pure White** (`#ffffff`) provides interactive distinction without visual aggression. Elevation comes from a small, deliberate set of shadows (3 distinct), each a multi-layer stack — several blurred layers at varying offsets — used sparingly rather than across the whole UI. 
Border radius varies from pill-shaped (fully rounded) to moderately rounded elements, creating visual rhythm. Motion design uses smooth easing curves for polished state transitions. 

**Key Characteristics:**
- Background: Pure White (`#ffffff`)
- Primary typeface: UberMove
- Accent: Pure White (`#ffffff`)
- Display: 52px weight 700
- Shadow system: 3 distinct elevation levels
- Custom fonts loaded: UberMove, UberMoveText, Book, Medium, NarrowBook, NarrowMedium, NarrowNews, NarrowThin, News, Thin

## 2. Color Palette & Roles

### Background & Surface
- **Pure White** (`#ffffff`): Page background (primary)
- **Off-White** (`#efefef`): Surface / elevated background
- **Off-White** (`#f3f3f3`): Surface / elevated background
- **Off-White** (`#f6f6f6`): Surface / elevated background
- **Off-White** (`#eeeeee`): Surface / elevated background

### Text & Content
- **Pure Black** (`#000000`): Primary body text
- **#0000ee** (`#0000ee`): Secondary text
- **Charcoal** (`#333333`): Secondary text

### Accent & Interactive
- **Sage** (`#9dcdd6`): Interactive / accent

### Full Extracted Palette
**15 colors rendered on the page** + **356** more declared in design tokens (CSS custom properties — not necessarily painted). (9 categorized above + 362 additional below.)
Rendered values are read via `getComputedStyle()`; token values come from CSS variable declarations. Third-party logo colors are filtered out.

- `#5e5e5e` — Slate Grey
- `#868686` — Slate Grey
- `#767676` — Slate Grey
- `#4b4b4b` — Charcoal
- `#afafaf` — Grey
- `#757575` — Slate Grey
- `#feda94` — #feda94 *(token)*
- `#474747` — Charcoal *(token)*
- `#5b0336` — #5b0336 *(token)*
- `#79bdfc` — Baby Blue *(token)*
- `#5e0c02` — #5e0c02 *(token)*
- `#220ba5` — #220ba5 *(token)*
- `#4466fc` — Royal Blue *(token)*
- `#fea65d` — Tangerine *(token)*
- `#df9906` — #df9906 *(token)*
- `#cd9ffc` — Plum *(token)*
- `#ac5c10` — #ac5c10 *(token)*
- `#614e01` — Chocolate *(token)*
- `#7c3c08` — Chocolate *(token)*
- `#a78d02` — #a78d02 *(token)*
- `#cec5bb` — Silver *(token)*
- `#c16808` — #c16808 *(token)*
- `#655e54` — Dim Gray *(token)*
- `#4c13d4` — #4c13d4 *(token)*
- `#0f0900` — Pure Black *(token)*
- `#01300c` — #01300c *(token)*
- `#180400` — Pure Black *(token)*
- `#ceccfd` — Lavender *(token)*
- `#dfeffe` — Light Gray *(token)*
- `#fc9026` — #fc9026 *(token)*
- `#75e190` — #75e190 *(token)*
- `#720d00` — #720d00 *(token)*
- *…+330 more in `raw-css.json` (`desktop.allColors`).*

### CSS Custom Properties (Design Tokens)

- `--base-accent-background-primary-disabled`: `rgba(2, 38, 79, 0.75)`
- `--base-background-material-primary`: `rgba(39, 39, 39, 0.9)`
- `--base-accent-border-primary-subtle`: `rgba(17, 117, 221, 0.3)`
- `--base-border-material-primary`: `rgba(236, 236, 236, 0)`
- `--base-elevation-lowest-key-color`: `rgba(224, 224, 224, 0.1)`
- `--base-elevation-lowest-ambient-color`: `rgba(10, 10, 10, 0.48)`
- `--base-elevation-low-key-color`: `rgba(224, 224, 224, 0.12)`
- `--base-elevation-low-ambient-color`: `rgba(10, 10, 10, 0.56)`
- `--base-elevation-mid-key-color`: `rgba(224, 224, 224, 0.16)`
- `--base-elevation-mid-ambient-color`: `rgba(10, 10, 10, 0.64)`
- `--base-elevation-high-key-color`: `rgba(224, 224, 224, 0.18)`
- `--base-elevation-high-ambient-color`: `rgba(10, 10, 10, 0.72)`
- `--base-elevation-highest-key-color`: `rgba(224, 224, 224, 0.2)`
- `--base-elevation-highest-ambient-color`: `rgba(10, 10, 10, 0.8)`

## 3. Typography Rules

### Font Families
- **Primary**: `UberMove`
- **Secondary**: `UberMoveText`
- **Font 3**: `Book`
- **Font 4**: `Medium`
- **Font 5**: `NarrowBook`

### Custom Fonts Loaded
- **UberMove** weight 200 (normal)
- **UberMove** weight 400 (normal)
- **UberMove** weight 500 (normal)
- **UberMove** weight 600 (normal)
- **UberMoveText** weight 200 (normal)
- **UberMoveText** weight 400 (normal)
- **UberMoveText** weight 500 (normal)
- **UberMoveText** weight 600 (normal)
- **Book** weight normal (normal)
- **Medium** weight normal (normal)
- **NarrowBook** weight normal (normal)
- **NarrowMedium** weight normal (normal)
- **NarrowNews** weight normal (normal)
- **NarrowThin** weight normal (normal)
- **News** weight normal (normal)
- **Thin** weight normal (normal)

### Typography Hierarchy

| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
|------|------|------|--------|-------------|----------------|-------|
| Display Hero | UberMove | 52px | 700 | 1.23 | normal | Main headline (h1) |
| Link Large | UberMove | 24px | 400 | 4.67 | normal | Link (24px) — Decoration: none |
| Sub-heading | UberMove | 20px | 700 | 1.4 | normal | Third-level heading (h3) |
| Body | UberMove | 16px | 400 | normal | normal | Standard reading text |
| Button Large | UberMoveText | 16px | 400 | 1.5 | normal | Button label (16px) |
| Button Large | UberMoveText | 16px | 500 | 1.25 | normal | Button label (16px) |
| Button | UberMoveText | 14px | 500 | 1.14 | normal | Button label (14px) |

### Full Font Size Scale

Sizes detected in the design (descending): `52px`, `36px`, `32px`, `24px`, `20px`, `18px`, `16px`, `14px`, `13.33px`, `12px`

> 5 size(s) detected outside the sampled hierarchy (36px, 32px, 18px, 13.3333px, 12px). These appear on elements not in the sampled set — likely additional display sizes, marketing-section overrides, or third-party-widget styles.

## 4. Component Stylings

### Buttons

**Pill**
- Background: `#000000`
- Text: `#ffffff` `{colors.primary}`
- Padding: 10px 12px
- Radius: 999px
- Font: 14px weight 500
- Use: Status pills, tags, chips
- Hover: boxShadow: `rgba(255, 255, 255, 0.1) 999px 999px 0px 0px inset`
- Focus: boxShadow: `rgb(255, 255, 255) 0px 0px 0px 2px inset, rgb(39, 110, 241) `

**Ghost**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px
- Radius: 8px
- Font: 16px weight 400
- Use: Subtle action, toolbar, nav button
- Hover: boxShadow: `rgba(255, 255, 255, 0.1) 999px 999px 0px 0px inset`
- Focus: boxShadow: `rgb(255, 255, 255) 0px 0px 0px 2px inset, rgb(39, 110, 241) `

**Ghost**
- Background: `#000000`
- Text: `#ffffff` `{colors.primary}`
- Padding: 14px 25px
- Radius: 8px
- Font: 16px weight 500
- Use: Subtle action, toolbar, nav button
- Hover: boxShadow: `rgba(255, 255, 255, 0.1) 999px 999px 0px 0px inset`
- Focus: boxShadow: `rgb(255, 255, 255) 0px 0px 0px 2px inset, rgb(39, 110, 241) `

**Pill**
- Background: `#000000`
- Text: `#ffffff` `{colors.primary}`
- Padding: 8px
- Radius: 999px
- Font: 14px weight 500
- Use: Status pills, tags, chips
- Hover: boxShadow: `rgba(255, 255, 255, 0.1) 999px 999px 0px 0px inset`
- Focus: boxShadow: `rgb(255, 255, 255) 0px 0px 0px 2px inset, rgb(39, 110, 241) `

### Inputs & Forms

**Text Input**
- Background: `transparent`
- Text: `#000000`
- Padding: 10px 14px 10px 48px
- Radius: 0px
- Border: 0px none rgb(118, 118, 118)
- Font: 16px weight 400
- Use: Text fields, search inputs

### Navigation

**Main Nav**
- Background: `#000000`
- Padding: 12px 0px
- Radius: none
- Font: 16px weight 400
- Use: Fixed/sticky flex nav — N/A items


## 4b. Component Behaviors (State Matrix)

### Interaction State Narrative

- **Button**:
  - **hover:** shadow added
  - **focus:** shadow added

*State transitions extracted via Playwright simulation — exact values in the YAML matrix below.*

```yaml
component-behaviors:
  button:
    default:
      bg: "rgb(0, 0, 0)"
      fg: "rgb(255, 255, 255)"
    hover:
      bg: "transparent"
      fg: "inherit"
      shadow: "rgba(255, 255, 255, 0.1) 999px 999px 0px 0px inset"
    focus:
      bg: "transparent"
      fg: "inherit"
      shadow: "rgb(255, 255, 255) 0px 0px 0px 2px inset, rgb(39, 110, 241) "
  input:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(0, 0, 0)"
  link:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(0, 0, 238)"
  navLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
  footerLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
```

**Agent usage**: Validate generated components against this matrix. If your output's `:hover` state changes properties not listed here, you are off-brand.


## 4c. Component Vocabulary (Closed System)

*This brand uses ONLY the following component vocabulary. Introducing new variants without justification breaks the system's tonal coherence.*

### Buttons
- **2 shape(s)** in this system: `Pill`, `Ghost`
- **DO NOT introduce new buttons variants** without justification

### Inputs & Forms
- **1 shape(s)** in this system: `Text Input`
- **DO NOT introduce new inputs & forms variants** without justification

### Navigation
- **1 shape(s)** in this system: `Main Nav`
- **DO NOT introduce new navigation variants** without justification

## 5. Layout Principles

### Layout Type
**top-nav + content**

### Grid
Single column, centered content

### Max Width
1200px

### Spacing System
Generous spacing — editorial breathing room

| Token | Value |
|-------|-------|
| xxs | 2px |
| xs | 10px |
| sm | 12px |
| md | 14px |
| base | 30px |
| lg | 48px |
| xl | 64px |
| 2xl | 72px |
| 3xl | 80px |

### Border Radius Scale
| Name | Value | Use |
|------|-------|-----|
| None | 0px | No rounding |
| Xs | 6px | Tiny corners (badges, micro elements) |
| Sm | 8px | Buttons, inputs, small elements |
| Md | 12px | Cards, containers |
| Lg | 16px | Large rounded elements, pill segments |
| Xl | 999px | Category strips, featured containers |
| Full | 999px | Pills, avatars, circular elements |

### Shape Language

| Component | Border Radius |
|-----------|---------------|
| Buttons | `999px` |
| Inputs & Forms | `0px` |
| Navigation | `none` |
| Page Body | `0px` |
| Primary Input | `0px` |

**Shape Personality**: Sharp + Pill Contrast — Angular precision with pill-shaped accents (status badges, tags). Creates strong visual hierarchy.

**Full Radius Spectrum**: 0px, 6px, 8px, 12px, 16px, 999px (from `allBorderRadii` scan)


## 5b. Spacing Rhythm Names

**Measured section padding**: bands use ~64px internal vertical padding (up to 64px) — **generous**. (Distinct from the gap *between* sections above.) Reproduce this generous vertical breathing room; cramped spacing is the #1 tell of a cheap clone.

*Named spacing tokens with explicit use cases. Use these names in YOUR code instead of raw pixels for consistency.*

| Name | Value | Use case |
|------|-------|----------|
| **hero** | `80px` | Top/bottom of full-bleed hero sections |
| **section** | `64px` | Between major bands (color change, content shift) |
| **subsection** | `48px` | Within a section, between content groups |
| **card** | `14px` | Card padding, list-item spacing |
| **compact** | `12px` | Form fields, tight clusters, badge padding |
| **micro** | `10px` | Icon-text gap, tag inner padding |

**Agent rule**: NEVER hardcode raw pixel values for spacing in generated UI. Always reference these named tokens (`spacing-rhythm.section`, etc.).

## 5c. Widget & Structure Library

Structural patterns extracted from the page DOM — these are the **blueprints** an agent should follow to reproduce the page architecture (not just CSS values).

**5/8 structural patterns detected.**

### Hero Pattern

- **Composition:** split-left-text — Split layout, text-left/media-right — heading + body in left column, image/illustration in right column. Common for product showcases.
- **Viewport coverage:** 587px tall (not full-viewport)
- **Heading:** "Go anywhere with Uber" — 52px left-aligned
- **Media:** present, positioned right
- **CTAs:** 3 (primary: "ClockPickup nowChevron down small")
- **Clone instruction:** Reproduce the **split-left-text** layout. Use the heading font-size token at the documented size. Place media right of text.

### Navigation Pattern

- **Position:** sticky (stays visible during scroll)
- **Layout:** unknown — Layout not classified
- **Height:** 64px
- **Logo:** ✓ present
- **Nav links:** 1 primary items
- **CTAs in nav:** 6
- **Clone instruction:** Build a sticky unknown navigation. Reserve 6 slots for primary CTAs.

### Card Grid Pattern

- **Card count:** 4 cards detected
- **Columns (desktop):** 6-up grid
- **Card dimensions:** 261×419px (aspect 0.62:1)
- **Gap:** 36px between cards
- **Content:** ✗ no image
- **Clone instruction:** Build a 6-column grid (desktop) with cards at ~0.62:1 aspect ratio. Text/icon-only cards (no photography).

### CTA Banner Pattern

- **Banner count:** 8
- **Position:** multiple
- **Visual treatment:** ✓ contrasting background
- **Primary CTA text:** "RideGo anywhere with Uber. Request a ride, hop in, and go.De"
- **Clone instruction:** Place multiple CTA banners across page sections. Use contrasting solid background.

### Footer Pattern

- **Columns:** 1
- **Links:** 35 total
- **Height:** 1040px
- **Includes:** ✗ no newsletter | ✓ social icons | ✓ language switcher ✓ copyright
- **Clone instruction:** Build a 1-column footer with ~35 links per column, social media links, and a copyright line.

## 6. Depth & Elevation

| Level | Treatment | Use |
|-------|-----------|-----|
| Flat (Level 0) | No shadow | Page background, content blocks |
| Layered (Level 1) | <br>`rgba(0, 0, 0, 0.16) 0px 4px 16px 0px` | Cards, elevated surfaces |
| Layered (Level 2) | <br>`rgba(0, 0, 0, 0.12) 0px 4px 16px 0px` | Cards, elevated surfaces |
| Layered (Level 3) | <br>`rgba(0, 0, 0, 0.16) 0px 2px 8px 0px` | Cards, elevated surfaces |

**Shadow Philosophy**: Multi-layered shadow system creating natural, atmospheric depth. Each shadow level combines multiple layers for realistic elevation.

## 7. Motion & Interaction

### Dominant Easing Curves

| Curve | Semantic Name |
|-------|---------------|
| `cubic-bezier(0.2,0.8,0.4,1)` | Custom Ease — Balanced |
| `cubic-bezier(0.22,1,0.36,1)` | Ease Out — Decelerating |
| `ease-out` | Ease Out — Decelerating |

### Duration Scale

| Value | Tier | Typical Use |
|-------|------|-------------|
| `200ms` | Normal | Panel open/close, navigation |
| `300ms` | Normal | Panel open/close, navigation |
| `500ms` | Slow | Hero animations, page transitions |

### Copy-Paste Transition Snippets

**Transform**
```css
transition: transform 0.2s ease-out;
```

**All Props**
```css
transition: backgroundSize 0.5s cubic-bezier(0.22, 1, 0.36, 1);
```

**Background**
```css
transition: background 0.2s cubic-bezier(0, 0, 1, 1);
```

**Color / Background**
```css
transition: color 0.2s cubic-bezier(0.2, 0.8, 0.4, 1), background-color 0.2s cubic-bezier(0.2, 0.8, 0.4, 1);
```

### Keyframe Animation Catalog

| Animation Name | Type | Animated Props | Use Hint |
|----------------|------|----------------|----------|
| `animation-dkKkL` | Custom | background-position-x, background-position-y | UI transition |

### Motion Fingerprint

- **Speed Character**: Deliberate & Calm (median duration: `300ms`)
- **Dominant Easing**: custom cubic-bezier curves
- **Animation Library**: 1 unique animation (1 total including variants)

> This design moves with deliberate & calm timing using custom cubic-bezier curves, creating a UI that feels calm and controlled.

## 8. Do's and Don'ts

### Do
- Use the extracted shadow patterns for elevation — they are tuned to match the brand palette
- Use full-pill radius (9999px) only for specific elements (avatars, pills, toggles)
- Use Pure White (`#ffffff`) as the primary accent — it's the brand's signature interactive color
- Use pill-shaped radius (999px) for primary CTA buttons — the brand uses fully-rounded, pill CTAs
- Keep navigation sticky to the top — the design uses a persistent navigation pattern
- Maintain nav height at 64px — consistent vertical space for the navigation bar
- Build the hero as a split layout with media on the left — text and visual share equal weight
- Include exactly 3 CTAs in the hero (primary + secondary) — this design pattern is multi-action, not single-purpose
- Make the navigation sticky — it stays visible during scroll, signaling content depth
- Use a 6-column grid on desktop — density matters for this content type
- Repeat the primary CTA across 8 banner sections — conversion paths are layered, not single

### Don't
- Don't invent new shadow values — use only the extracted shadow levels
- Don't apply pill radius on rectangular buttons or cards — it's reserved for specific interactive elements
- Don't introduce additional saturated accent colors — the palette is intentionally controlled
- Don't use rectangular buttons for primary actions — the rounded pill shape is the brand standard
- Don't collapse or hide the nav on scroll without an explicit scroll-triggered animation — the design uses fixed nav presence


## 7b. Enforceable Brand Rules

*Structured Do/Don't with reasoning and validation tests. Agents can programmatically verify generated UI.*

```yaml
rules:
  - id: brand-canvas-001
    type: do
    rule: "Always use the page background `rgb(255,255,255)` as the base canvas"
    why: "Every component is designed to composit against this exact tone"
    test: "document.body.style.backgroundColor === 'rgb(255,255,255)'"
  - id: brand-accent-001
    type: do
    rule: "Reserve `rgb(255, 255, 255)` for primary CTAs and brand-mark signals only"
    why: "Single chromatic assertion device — overuse dilutes meaning"
    test: "querySelectorAll('[style*=\"rgb(255, 255, 255)\"]').length <= 3 per fold"
```

## 9. Responsive Behavior

### Breakpoints
| Name | Width | Key Changes |
|------|-------|-------------|
| Mobile | 320px | Single column, compact spacing |
| Mobile Large | 600px | Expanded mobile layout |
| Mobile Large | 767px | Expanded mobile layout |
| Desktop | 1119px | Full feature layout |

### Token Diff — Desktop vs Mobile

| Element | Property | Desktop | Mobile |
|---------|----------|---------|--------|
| heading | font-size | `52px` | `36px` |
| heading | line-height | `64px` | `44px` |
| button | width | `91px` | `auto` |

### Collapsing Strategy
- Headlines: 52px → 36px on mobile
- Navigation: horizontal links → hamburger menu on mobile
- Cards: multi-column → stacked vertical on mobile
- Footer: multi-column → stacked single column on mobile

### Touch Targets
- Buttons: 10px 12px padding
- Navigation: adequate spacing between items
- Interactive elements: minimum 44px touch target recommended

### Collapsing Narrative

How the structural patterns adapt from desktop to mobile (extracted from both viewport extractions):

- **Hero collapses split-left-text → left-aligned** — composition shifts (verify on actual mobile render).
- **Hero CTAs:** 3 on desktop → 1 on mobile (secondary CTAs dropped on small screens).
- **Card grid: 6-up → 1-up** — cards stack as viewport narrows, becoming a vertical list on mobile.


## 7c. Visual Effects & Dynamic Behavior

*The live/dynamic layer beyond static CSS — reproduce these, not flat substitutes. This is often what separates a faithful clone from a wireframe.*

- **Glassmorphism** — 3 frosted/blur layer(s) (e.g. `blur(32px)`).
- **Clip-path shapes** — 6 non-rectangular cut(s).

> **Motion fingerprint**: glassmorphism (3 layers), non-rectangular shapes (6)

## 9b. Visual Tone & Photography

**Tone:** Mixed photography + illustration

A balanced mix of photographic content and vector graphics. Photos likely carry product/lifestyle context while SVG handles icons, logos, and decorative accents.

**Canonical Brand Image (OG):**
- https://tb-static.uber.com/prod/udam-assets/6b65f287-0bee-44e7-868a-e26b8722364e.png
  *This is the image shown when the site is shared on social media — represents the brand visual essence.*

**Hero Image (above-fold dominant visual):**
- Aspect: 1:1 (square / portrait)
- Rendered size: 459×459px
- *Use this aspect ratio + composition for your clone's hero — mimicking the proportion preserves the visual hierarchy.*

**Aspect Ratio Distribution:**
- Landscape (1.15–2.3): 2 (15%)
- Portrait (<0.87): 0 (0%)
- Square (0.87–1.15): 11 (85%)

**Media Format Mix:**
- PNG: 6 (logos, transparent UI elements, mockups)
- SVG: 1 (icons, illustrations, decorative geometry)

**Average rendered image size:** 289×261px
**Above-fold image count:** 4 / 13

**Decorative Patterns Detected:**
- 9 multi-stop linear gradients (mesh-like, 3+ color stops) — the brand leans on rich color transitions for visual depth
- **Glassmorphism** detected (`backdrop-filter: blur`) — layered transparent surfaces with blur, modern OS-like aesthetic

**Clone instruction for decorative work:** This is a gradient-rich design — invest in multi-stop CSS gradients (3+ color stops), not solid backgrounds.

**Imagery Guidance for clones:**
- Mix photography and illustration intentionally: photos for product/context, vectors for icons + decorative accents.
- Respect the format split — replacing JPGs with illustrations (or vice versa) will shift the brand tone.

## 10. Agent Prompt Guide

### Quick Reference
- Background: Pure White (`#ffffff`)
- Primary text: Pure Black (`#000000`)
- Accent: Pure White (`#ffffff`)
- Border: Slate Grey (`#5e5e5e`)
- Font: UberMove
- Body: 16px weight 400

### Example Component Prompts
- "Create a hero section on Pure White background (#ffffff). Headline at 52px UberMove weight 700, line-height 1.23, color #000000."
- "Create the primary CTA button: `#ffffff` background, `#ffffff` text, 999px border-radius, 10px 12px padding, 500 weight, UberMove font."
- "Build navigation: sticky on `#ffffff`. UberMove 16px weight 400 for links."

### Iteration Guide
1. **Canvas**: Set the light canvas to Pure White (`#ffffff`) — every component is composited against this exact base.
2. **Typography**: All type in UberMove, weight range 400–700. Never exceed 700 — heavier weights break the brand's tonal restraint.
3. **Accent**: Pure White (`#ffffff`) is the sole interactive color. On hover → Sage (`#9dcdd6`). Use CSS transitions, not opacity/brightness filters.
4. **Motion**: All transitions use `cubic-bezier(0.22,1,0.36,1)`. Never use linear for UI transitions — preserve the brand's easing personality.
5. **Shape**: CTAs at `999px`. Apply border-radius from the extracted scale only — don't invent intermediate values.
6. **Spacing**: Use the `--ca-space-*` token scale (10px–64px). All padding, margin, and gap values are multiples from this scale — no magic numbers.
7. **Tokens**: Import from §11 CSS Export (`--ca-*` vars). Never hardcode hex values — always reference a token so theming remains consistent.

## 11. CSS Design Tokens Raw Export

*Copy-paste ready `:root {}` block — all values extracted directly from the live site.*

```css
/* Colors */
:root {
  --ca-primary: #ffffff;
  --ca-surface-1: #efefef;
  --ca-surface-2: #f3f3f3;
  --ca-ink-subtle: #6b6b6b;
  --ca-on-primary: #111111;
  --ca-primary-hover: #9dcdd6;
  --ca-hairline: #5e5e5e;
  --ca-primary-focus: #276ef1;
  --ca-semantic-error: #4e0600;
  --ca-semantic-success: #013c14;
  --ca-semantic-warning: #502002;
}

/* Typography */
:root {
  --ca-font-primary: "UberMove", system-ui, sans-serif;
  --ca-text-display: 52px;
  --ca-text-body: 16px;
  --ca-text-small: 24px;
  --ca-text-button: 16px;
}

/* Spacing & Radius */
:root {
  --ca-space-xxs: 2px;
  --ca-space-xs: 10px;
  --ca-space-sm: 12px;
  --ca-space-md: 14px;
  --ca-space-base: 30px;
  --ca-space-lg: 48px;
  --ca-space-xl: 64px;
  --ca-space-2xl: 72px;
  --ca-space-3xl: 80px;
  --ca-radius-none: 0px;
  --ca-radius-xs: 6px;
  --ca-radius-sm: 8px;
  --ca-radius-md: 12px;
  --ca-radius-lg: 16px;
  --ca-radius-xl: 999px;
  --ca-radius-full: 999px;
}
```


## 13. Page Structure Skeleton

*The actual layout the source site uses. Reproduce these sections in order to match the site structure.*

```yaml
page-skeleton:
  - section: hero
    tag: div
    height: 5436px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: main
    height: 5436px
    width: full-bleed
    layout: block
    children: 28
  - section: hero
    tag: div
    height: 587px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 587px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(255, 255, 255)"
  - section: feature-section
    tag: div
    classes: ["container-inner"]
    height: 587px
    width: 1280px
    layout: block
    children: 1
    bg: "rgb(255, 255, 255)"
    vertical-padding: ~64px (generous)
    padding: "64px"
  - section: hero
    tag: div
    height: 434px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 434px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(255, 255, 255)"
  - section: feature-section
    tag: div
    classes: ["container-inner"]
    height: 434px
    width: 1280px
    layout: block
    children: 1
    bg: "rgb(255, 255, 255)"
    padding: "0px 64px"
  - section: feature-section
    tag: div
    height: 500px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 500px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(255, 255, 255)"
  - section: feature-section
    tag: div
    classes: ["container-inner"]
    height: 500px
    width: 1280px
    layout: block
    children: 1
    vertical-padding: ~64px (generous)
    padding: "64px"
  - section: feature-section
    tag: div
    height: 534px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 534px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(255, 255, 255)"
  - section: feature-section
    tag: div
    classes: ["container-inner"]
    height: 502px
    width: 1280px
    layout: block
    children: 1
    bg: "rgb(255, 255, 255)"
    padding: "0px 64px"
  - section: feature-section
    tag: div
    height: 500px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 500px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(255, 255, 255)"
  - section: feature-section
    tag: div
    classes: ["container-inner"]
    height: 500px
    width: 1280px
    layout: block
    children: 1
    vertical-padding: ~64px (generous)
    padding: "64px"
  - section: feature-section
    tag: div
    height: 686px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 686px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(255, 255, 255)"
  - section: feature-section
    tag: div
    classes: ["container-inner"]
    height: 686px
    width: 1280px
    layout: block
    children: 1
    vertical-padding: ~64px (generous)
    padding: "64px"
  - section: feature-section
    tag: div
    height: 686px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 686px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(255, 255, 255)"
  - section: feature-section
    tag: div
    classes: ["container-inner"]
    height: 686px
    width: 1280px
    layout: block
    children: 1
    vertical-padding: ~64px (generous)
    padding: "64px"
  - section: feature-section
    tag: div
    height: 406px
    width: full-bleed
    layout: block
    children: 1
  - section: feature-section
    tag: section
    height: 406px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    bg: "rgb(246, 246, 246)"
```

**Agent rule**: rebuild sections in this order (sorted by vertical position). Match the layout primitive (grid N-col / flex direction / block).


## 14. Copy Library (Real Content from Source)

*Actual text content extracted from the live page. Use these strings verbatim when reproducing the site — they carry the brand voice.*

```yaml
copy:
  section-headings:
    - "Explore what you can do with Uber"
    - "Log in to see your account details"
    - "Download the Uber app"
    - "Company"
  sub-headings:
    - "Benefits"
  ctas:
    - "About"
    - "EN"
    - "Sign up"
    - "Change city"
    - "Pickup now"
    - "Next"
    - "Paris"
    - "English"
  navigation:
    - "Uber"
    - "Ride"
    - "Earn"
    - "Business"
    - "Uber Eats"
    - "Help"
    - "Log in"
  footer-links:
    - "Uber"
    - "Visit Help Center"
    - "How the Uber and Uber Eats apps and websites work"
    - "About us"
    - "Privacy"
```

**Agent rule**: reuse these exact strings when generating UI. Do NOT translate or rephrase — brand voice is preserved through the original wording.


## 15. Asset Inventory (Image Roles & Ratios)

*Image inventory classified by role and aspect ratio. When reproducing the site, allocate this number of assets per role.*

```yaml
assets:
  logo:
    count: 2
    avg-ratio: 3.17
    common-aspect: "~16:6 banner"
    sample-alts:
      - "Download the Uber app for Android"
      - "Download the Uber app for IOS"
  product:
    count: 3
    avg-ratio: 1.00
    common-aspect: "~1:1 square"
  thumbnail:
    count: 11
    avg-ratio: 1.00
    common-aspect: "~1:1 square"
    sample-alts:
      - "Ride"
      - "Reserve"
      - "Airport"
```

**Agent rule**: when generating placeholder images, match these counts and aspect ratios. Use neutral placeholder backgrounds for `product` (e.g. `#f5f5f5`), full-color photography hints for `hero` and `editorial`.


## 16. Component HTML Templates

*Suggested HTML markup for reproducing the key components — based on what was detected in the source DOM.*

### Button (primary action)
```html
<button class="btn btn-primary">
  About
</button>
```
_Source pattern detected: padding `10px 12px` · radius `999px` · weight `500`_

**Agent rule**: use these markup skeletons as the structural baseline. Apply tokens from §2-3 for visual styling.


## 17. Content Architecture & Resources (Links by Purpose)

*The page's links classified by purpose — the information architecture to reproduce. Categories, featured images, devices and projects are extracted from the rendered DOM, not guessed.*

**By purpose:** **nav** 6 · **cta** 3 · **auth** 4 · **social** 4 · **legal** 4 · **footer** 25 · **other** 14

**Primary actions (conversion path):**
- Account access — "Log in" (login/signup) → `https://auth.uber.com/login-redirect?next_url=https://www.uber.com`
- Account access — "Log in to see your recent activity" (login/signup) → `https://auth.uber.com/login-redirect?next_url=https://www.uber.com`
- Account access — "Log in to your account" (login/signup) → `https://auth.uber.com/login-redirect?next_url=https://www.uber.com`
- Primary call-to-action — "Create an account" (the conversion path) → `https://get.uber.com/sign-up`
- Primary call-to-action — "Get started" (the conversion path) → `https://drivers.uber.com/`
- Account access — "Already have an account? Sign in" (login/signup) → `https://drivers.uber.com/`

**Signals:** 14/60 links carry a featured image · device mockups detected: phone ×3 · dominant link roles: footer-link (33), inline-link (13), content-card (8).


---
## Extraction Completeness: 68/100 (C)

| Category | Score | Max | Detail |
|----------|-------|-----|--------|
| Colors & Palette | 13 | 25 | 9 named colors |
| Typography | 18 | 20 | 7 roles defined |
| Components | 12 | 20 | 3 specs extracted |
| Motion & Interaction | 12 | 15 | Keyframes |
| CSS Custom Properties | 10 | 10 | 537 vars |
| Responsive Breakpoints | 4 | 5 | 4 breakpoints |
| Variable Fonts | 0 | 5 | None detected |

## 12. Known Gaps & Confidence

Explicit list of what this extraction could NOT capture. Agents should not invent values for these — either skip the feature or use the documented baseline + heuristic fallback.

*Auto-detected extraction limitations — understand before building:*

- **Sparse component extraction** — fewer than 5 component types detected. Highly dynamic sections (modals, datepickers, carousels) require interaction to render and are not captured in a static pass.

*✅ No critical extraction gaps detected — high-confidence reproduction expected.*

### Per-section confidence

| Section | Confidence | Reason |
|---------|------------|--------|
| §1 Visual Theme | High | Body bg extracted via getComputedStyle() |
| §2 Colors | High | 537 CSS vars (semantic naming requires ≥20 for high) |
| §3 Typography | High | 7 typography roles inferred |
| §4 Components | Medium | 3 component variants captured |
| §7 Motion | High | Keyframes + transitions |
| §8 Do's/Don'ts | High | 16 rules generated; design-decisions.json has evidence per rule |
| §9 Responsive | High | 4 breakpoints detected |
| §9b Photography | High | 13 images, hero present |

## 11.1 CSS Implementation Guide (CSS Interception Engine v2.15+)

*Ready-to-use CSS from Prism's CSS Interception Engine — intercepted directly from the site's CSS files (bypasses CORS). Copy-paste into your `<style>` block.*

> **Note**: All values above are extracted from the live site's CSS files. The font files are saved locally by Prism and embedded in the output HTML. Use them as-is for maximum fidelity.

## 11.2 Measured Reality (CDP Engine)

Captured directly from Chrome's engine across **all 834 rendered nodes** — not a sample. These are the values the page *actually paints*, weighted by how often they appear.

### Real Responsive Breakpoints
**7 breakpoints** read from the live `@media` rules (not guessed):
`320px` · `600px` · `767px` · `768px` · `1119px` · `1120px` · `1136px`

### Measured Design Scale
**Type scale by usage** (× = paint count): `16px`×658 · `14px`×107 · `12px`×24 · `36px`×16 · `24px`×13 · `18px`×10 · `52px`×2 · `20px`×2

**Radius scale** (× = paint count): `999px`×36 · `8px`×29 · `12px`×2 · `6px`×1 · `16px`×1

**Weights** (× = paint count): `400`×659 · `500`×150 · `700`×24

**Layout gaps** (× = paint count): `36px`×13 · `2px`×3 · `8px`×2 · `4px`×2 · `8px 36px`×1 · `28px`×1 · `16px`×1 · `12px`×1

**Elevation (real shadows)**:
```css
rgba(0, 0, 0, 0.16) 0px 2px 8px 0px
```

### Provenance — measured styles on key elements
Read from the live CSSOM (includes runtime-injected CSS). This is *what actually styles the page*, by element:

```css
nav { font-family:UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:16px; font-weight:normal; background-color:#000000 }
h1 { font-family:UberMove, UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:36px; font-weight:700; color:currentColor; transition:all 200ms cubic-bezier(0.4, 0, 0.2, 1) }
@media screen and (min-width: 600px) h1 { font-family:UberMove, UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:44px; font-weight:700 }
@media screen and (min-width: 1136px) h1 { font-family:UberMove, UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:52px; font-weight:700 }
h2 { font-family:UberMove, UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:28px; font-weight:700 }
@media screen and (min-width: 600px) h2 { font-family:UberMove, UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:32px; font-weight:700 }
@media screen and (min-width: 1136px) h2 { font-family:UberMove, UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:36px; font-weight:700 }
button { box-shadow:none; font-family:UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:14px; font-weight:500; color:#FFFFFF; background-color:#000000 }
a { transition:transform 200ms ease-out }
input { font-family:UberMoveText, system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif; font-size:16px; font-weight:normal; color:rgb(0, 0, 0); background:transparent; box-shadow:none; background-color:transparent }
```

> Selectors normalised to their semantic element — source class names are often build-hashed (`.bgDIHX`) and not reusable. The declarations + CSS vars are the transferable part.

---
*Generated by Prism — automated Playwright extraction + design analysis.*
*Source: https://uber.com | 2026-06-11T05:02:51.161Z*
*Values extracted via getComputedStyle() (rendered) + CSS custom properties (tokens, marked `(token)`). Token-only values may not be painted — verify against the live site before shipping.*