v0 — decoded design system

v0.app · light · modern · tailwind · deep decode — measured live

v0's design system, decoded live by Mozaika: measured color roles, type scale, buttons with real hover/focus states, motion and the brand's own tokens.

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This is a static, crawlable rendering for search & AI engines. The interactive version — filters, live decode console, copy & export — is at https://mozaika.design/decode/v0.app.

Decoded design system

v0's decoded design system: background #FAFAFA, text #666666, accent #FF0000, link #FF0000, primary #FF0000; type scale h1 48px / h2 32px / body 16px; 6px spacing base; 6px base radius. The single interactive/action color is #171717 — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #171717 — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, link are all #FF0000 — one role, not several (the action color).
• accent #FF0000 — accent for emphasis — keep it rare on the page.

Typography

• Heading: GeistSans
• Body: GeistSans
• Mono: GeistMono
• h1: 48px
• h2: 32px
• body: 16px

Spacing

• base unit: 6px
• scale: 4px, 6px, 8px, 10px, 12px, 16px, 24px, 32px, 40px, 48px

Radii

• base: 6px
• button: 4px

Motion

Micro-interactions run at 150ms (dominant) with cubic-bezier(0.4, 0, 0.2, 1).

• durations: 150ms · 300ms · 200ms
• easings: cubic-bezier(0.4, 0, 0.2, 1) · cubic-bezier(0, 0, 0.2, 1)
• animated properties: opacity, border-color, color, background-color

Native design tokens

…and 110 more measured on the page.

Button states (measured)

• primary focus: border 1px solid oklch(0.51 0 0) · background oklch(0.51 0 0)

Layout (measured)

• container max-width: 690px
• nav: 50px relative
• common grid: 2 columns

Motion choreography (measured)

Load order: div.flex → a.text-v0-gray-900×25 → path.text-v0-gray-1000×12 → button.group×3 → div.flex×3 → div.mx-4×36

Scroll reveal: 24 elements rest at opacity 0, translateY(4px), animate in over 0.15s cubic-bezier(0.4, 0, 0.2, 1).

Overlay recipe (measured)

palette panel: rgba(0, 0, 0, 0) · radius 0px

Responsive (measured)

• breakpoints: 600px · 640px · 768px · 960px · 1024px · 1280px
• mobile (390px): hero 16px · nav hamburger

Install it

Drop this measured system into any shadcn/Tailwind project in one command:

npx shadcn add mozaika.design/r/decode/v0.app

registry item · or query it over MCP: get_design_system("v0")

Export: DESIGN.md

# v0 — Design System

> light, modern, high, tailwind — deep decode (measured live)

## Colors

| Role | Value |
|------|-------|
| bg | `#FAFAFA` |
| surface | `#F1F1F1` |
| border | `#E3E3E3` |
| text | `#666666` |
| text_muted | `#9E9E9E` |
| primary | `#FF0000` |
| accent | `#FF0000` |
| link | `#FF0000` |
| button_bg | `#171717` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#171717` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `primary`, `accent`, `link` are all `#FF0000` — one role, not several.
- **accent** `#FF0000` — accent for emphasis — keep it rare on the page.
- **Page coverage** (full-page screenshot pixels): `#FAFAFA` 82.3% · `#131313` 7.6% · `#010101` 6.7% · `#C7C6C6` 3.4% — the action color covers ~7.6% of the page; keep it that scarce.

## Typography

- Heading: **GeistSans** _(free fallback: Newsreader)_
- Body: **GeistSans** _(free fallback: Newsreader)_
- Mono: **GeistMono** _(measured)_

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 48px / 600 · lh 56px · tracking -2.88px |
| h2 | 32px / 600 · lh 40px · tracking -1.28px |
| h3 | 24px / 600 · lh 32px · tracking -0.96px |
| body | 16px / 500 · lh 24px |
| small | 14px / 500 · lh 20px |

- Weight ladder: 400 · 500 · 600 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** GeistSans may be proprietary — safe free fallback: Newsreader (Google Fonts).

## Spacing
- base unit: 6px (inferred from the measured scale)
- measured scale: 4px, 6px, 8px, 10px, 12px, 16px, 24px, 32px, 40px, 48px — snap all gaps/padding to these
- section rhythm: 80px top/bottom padding per section (measured)

## Radius
- base: 6px
- button: 4px
- card: 8px
- pill: 9999px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `oklch(0.205 0 0)` / `oklch(1 0 0)` | 1px solid oklch(0.205 0 0) | 4px | 0px 8px 0px 8px | 500 14px | none |
| secondary | `oklch(1 0 0)` / `oklch(0.51 0 0)` | 1px solid oklch(0 0 0 / 0.078) | 3.35544e+07px | 0px 12px 0px 12px | 500 14px | none |

**States (measured, not guessed)**

- primary focus: border `1px solid oklch(0.51 0 0)` · background `oklch(0.51 0 0)`
- transition: `color 0.15s cubic-bezier(0.4, 0, 0.2, 1)`

## Motion
- durations: 150ms (dominant) · 300ms · 200ms
- easings: `cubic-bezier(0.4, 0, 0.2, 1)` (dominant) · `cubic-bezier(0, 0, 0.2, 1)`
- animated properties: opacity, border-color, color, background-color

Micro-interactions use the dominant duration + easing; nothing on the page animates slower than the longest duration above — don't invent springier motion.

## Their own tokens (verbatim from :root)

| Token | Value |
|-------|-------|
| `--sh-class` | `#00a7fd` |
| `--sh-identifier` | `#fff` |
| `--sh-sign` | `#9b9b9b` |
| `--sh-string` | `#00e7c1` |
| `--sh-keyword` | `#ff0078` |
| `--sh-comment` | `#a19595` |
| `--sh-jsxliterals` | `#ffff72` |
| `--fides-overlay-primary-color` | `#2b2e35` |
| `--fides-overlay-background-color` | `#f7fafc` |
| `--fides-overlay-font-color` | `#4a5568` |
| `--fides-overlay-font-color-dark` | `#2d3748` |
| `--fides-overlay-hover-color` | `#edf2f7` |

_…and 108 more measured on the page._

Prefer these names when extending their system — it's the brand's actual vocabulary.

## Layout (measured)
- container max 690px · common grid: 2-col
- nav: 50px relative · border-bottom 1px solid oklch(0.961 0 0)

| Section (y) | Height | Cols | Gap | Pad y | Split |
|---|---|---|---|---|---|
| 2 | 413 | — | — | 192/0 | — |
| 1357 | 1288 | 3 | 16 | 0/80 | — |
| 2717 | 200 | 2 | — | 80/80 | — |
| 2989 | 1033 | — | — | 80/80 | — |
| 4094 | 492 | — | — | 96/96 | — |

## Motion choreography (measured)
Load order: `div.flex` @0ms → `a.text-v0-gray-900`×25 @24ms → `path.text-v0-gray-1000`×12 @24ms → `button.group`×3 @535ms → `div.flex`×3 @535ms → `div.mx-4`×36 @536ms
- `div.flex` — transform translate(0px)→translate(-50%) — 24000ms · loops
- scroll reveal: 24 elements rest at opacity 0, translateY(4px), animate in over 0.15s cubic-bezier(0.4, 0, 0.2, 1) (2 revealed during the drive).
- overlay palette (auto-opened): panel rgba(0, 0, 0, 0) · r 0px

Rebuild the timeline, not just the durations — order, delays and staggers above are the choreography.

## Responsive (measured)
- breakpoints: 600px · 640px · 768px · 960px · 1024px · 1280px
- mobile (390px): hero 16px · body 16px · nav: hamburger

## How to apply
Paste the Tailwind `@theme` (or CSS variables) as your base, then build each
section to its spec — verify every color, radius, and font against these tokens.
Hover/focus states, shadows and motion timings above are measured from the live page — match them exactly, don't re-guess them.

← All decoded design systems

An automated reading of v0's publicly-visible CSS (colors, fonts, spacing, motion) — not affiliated with v0.app. No screenshots stored. Removal requests: hello@mozaika.design.