MozaikaDesign system

Things — Design System

light · modern · medium · custom · confidence 92% · deep decode

Things markets like the Mac app it is: the native SF system stack at a product-honest 24-36px, 15-20px body in Apple's reading greys on cloud #F2F5F7, and no web buttons — just the app, screenshotted with device-frame reverence. Cultured Code's page is an extension of macOS itself; the design system is the platform's, wielded with award-winning restraint.

Open in Mozaika →

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

Tokens

Things's decoded design system: background #F2F5F7, text #303336, accent #4F91FB, link #5C9CF5, primary #2576EB; type scale h1 23.994px / h2 15.3px / body 23.994px; 4px spacing base; 7px base radius. The single interactive/action color is #4F91FB — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

RoleValue
bg#F2F5F7
surface#E6E9EB
border#D4D7DA
text#303336
text_muted#797C7F
primary#2576EB
accent#4F91FB
link#5C9CF5
secondary#55606E
button_bg#4F91FB
button_text#FFFFFF

Using these colors

Typography

Spacing

Radii

Shadows (elevation)

Motion

Micro-interactions run at 100ms (dominant) with ease-out.

Button states (measured)

Responsive (measured)

Per-section tokens (9)

Export: DESIGN.md

# Things — Design System

> light, modern, medium, custom — deep decode (measured live)

Things markets like the Mac app it is: the native SF system stack at a product-honest 24-36px, 15-20px body in Apple's reading greys on cloud #F2F5F7, and no web buttons — just the app, screenshotted with device-frame reverence. Cultured Code's page is an extension of macOS itself; the design system is the platform's, wielded with award-winning restraint.

## Colors

| Role | Value |
|------|-------|
| bg | `#F2F5F7` |
| surface | `#E6E9EB` |
| border | `#D4D7DA` |
| text | `#303336` |
| text_muted | `#797C7F` |
| primary | `#2576EB` |
| accent | `#4F91FB` |
| link | `#5C9CF5` |
| secondary | `#55606E` |
| button_bg | `#4F91FB` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#4F91FB` — the single interactive color; it appears only on things you click or must notice (buttons, key highlights), never on large fills or backgrounds.
- `accent`, `button_bg` are all `#4F91FB` — one role, not several (your action color).
- **accent** `#4F91FB` — THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed.
- **primary** `#2576EB` — a brand color — but the call-to-action uses #4F91FB, not this.
- **link** `#5C9CF5` — fails contrast on the background (~2.5:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
- **secondary** `#55606E` — optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two.
- **Page coverage** (full-page screenshot pixels): `#FFFFFF` 93.6% · `#A8A8B8` 6.4%

## Typography

- Heading: **Roboto**
- Body: **Roboto**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 36px / 700 · lh 36px |
| h2 | 24px / 400 · lh 30px |
| body | 18px / 400 · lh 24px |
| small | 16px / 400 · lh 21px |

- Weight ladder: 400 · 600 · 700 · 800 — use these exact measured weights, not the 400/600 defaults.

> **Fonts —** Roboto — free, on Google.

## Spacing
- base unit: 4px (inferred from the measured scale)
- measured scale: 3px, 4px, 7px, 10px, 13px, 18px, 23px, 27px, 29px, 36px — snap all gaps/padding to these

## Radius
- base: 7px
- button: 8px
- card: 18px
- sharp: 3px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `rgba(0, 0, 0, 0)` / `#5C9CF5` | none | 6px | 4.05px 10.125px 4.05px 10.125px | 600 20.25px | none |
| secondary | `#FBFCFE` / `#5C9CF5` | none | 6px | — | — | none |

**States (measured, not guessed)**

- primary focus: outline `1px auto rgb(16, 16, 16)`

## Shadows (elevation)
- subtle: `rgba(38, 52, 74, 0.15) 0px 1px 0px 0px`
- card: `rgba(0, 0, 0, 0.1) 0px 2px 8px 0px, rgba(0, 0, 0, 0.1) 0px 0px 2px 0px`

## Motion
- durations: 100ms (dominant) · 200ms
- easings: `ease-out` (dominant)
- animated properties: transform, background

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

## Components (measured)
- link: #5C9CF5 · no underline

## Responsive (measured)
- breakpoints: 420px · 734px · 739px · 899px · 972px · 1002px
- mobile (390px): hero 20px · body 18px · nav: inline

## 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.

---

> **Decoded with Mozaika** — measured live, not guessed. Full decoded design system + one-command install: mozaika.design/ds/things

Export: Tailwind v4 (@theme)

@theme {
  /* action color #4F91FB — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #F2F5F7;
  --color-surface: #E6E9EB;
  --color-border: #D4D7DA;
  --color-text: #303336;
  --color-text-muted: #797C7F;
  --color-primary: #2576EB;  /* a brand color — but the call-to-action uses #4F91FB, not this. */
  --color-accent: #4F91FB;  /* THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed. */
  --color-link: #5C9CF5;  /* fails contrast on the background (~2.5:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --color-secondary: #55606E;  /* optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two. */
  --color-button-bg: #4F91FB;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: Roboto — free, on Google. */
  --font-heading: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  /* measured weights: 400, 600, 700, 800 — use these, not 400/600 */
  --text-hero: 36px; --font-weight-hero: 700; --leading-hero: 36px;
  --text-h2: 24px; --font-weight-h2: 400; --leading-h2: 30px;
  --text-body: 18px; --font-weight-body: 400; --leading-body: 24px;
  --text-small: 16px; --font-weight-small: 400; --leading-small: 21px;
  --radius-base: 7px;
  --radius-button: 8px;
  --radius-card: 18px;
  --radius-sharp: 3px;
  --shadow-card: rgba(0, 0, 0, 0.1) 0px 2px 8px 0px, rgba(0, 0, 0, 0.1) 0px 0px 2px 0px;
  --shadow-subtle: rgba(38, 52, 74, 0.15) 0px 1px 0px 0px;
  --outline-focus: 1px auto rgb(16, 16, 16);  /* measured focus ring */
  --ease-brand: ease-out;
  --duration-fast: 100ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 200ms;
  --spacing: 4px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 3, 4, 7, 10, 13, 18, 23, 27, 29, 36px */
}

Export: CSS variables

:root {
  /* action color #4F91FB — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #F2F5F7;
  --surface: #E6E9EB;
  --border: #D4D7DA;
  --text: #303336;
  --text-muted: #797C7F;
  --primary: #2576EB;  /* a brand color — but the call-to-action uses #4F91FB, not this. */
  --accent: #4F91FB;  /* THE accent / action color — interactive & must-notice only (buttons, links, focus, one key highlight); never large fills or backgrounds. Scarcity is what makes it read as designed. */
  --link: #5C9CF5;  /* fails contrast on the background (~2.5:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference). */
  --secondary: #55606E;  /* optional secondary accent — LOW decode confidence; use rarely (a status color or a single decorative moment) or omit it entirely. Prefer one accent unless the reference clearly shows two. */
  --button-bg: #4F91FB;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Roboto", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-hero: 36px; --weight-hero: 700; --leading-hero: 36px;
  --text-h2: 24px; --weight-h2: 400; --leading-h2: 30px;
  --text-body: 18px; --weight-body: 400; --leading-body: 24px;
  --text-small: 16px; --weight-small: 400; --leading-small: 21px;
  --radius: 7px;
  --radius-button: 8px;
  --radius-card: 18px;
  --radius-sharp: 3px;
  --shadow-card: rgba(0, 0, 0, 0.1) 0px 2px 8px 0px, rgba(0, 0, 0, 0.1) 0px 0px 2px 0px;
  --shadow-subtle: rgba(38, 52, 74, 0.15) 0px 1px 0px 0px;
  --focus-ring: 1px auto rgb(16, 16, 16);
  --ease: ease-out;
  --duration-fast: 100ms;
  --duration-base: 200ms;
}
/* fonts: Roboto — free, on Google. */