Coder — design system & UI screens

Dev Tools · 1 screen · 10 sections · https://coder.com/

Clean light landing; a headline over a dark Coder workspace dashboard mockup showing live agent runs, run-state controls, and a completed-task log.

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/website/coder.

Decoded design system

Coder's decoded design system: background #FFFFFF, text #0A0C0C, accent #0A0C0C, link #A19CC8, primary #FF8067; type scale h1 68px / h2 14px / body 18px; 4px spacing base; 0px base radius. The single interactive/action color is #0A0C0C — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Role	Value
bg	`#FFFFFF`
surface	`#F0F0F0`
border	`#DADADA`
text	`#0A0C0C`
text_muted	`#676868`
primary	`#FF8067`
accent	`#0A0C0C`
link	`#A19CC8`
secondary	`#9EDFE9`
button_bg	`#0A0C0C`
button_text	`#FFFFFF`

Using these colors

Action color #0A0C0C — the single interactive color; only on things you click or must notice, never large fills.
accent, button_bg are all #0A0C0C — one role, not several (the action color).
accent #0A0C0C — 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 #FF8067 — a brand color — but the call-to-action uses #0A0C0C, not this.
link #A19CC8 — fails contrast on the background (~2.6:1) — this is a dark UI color, NOT a readable link; use the text or action color for links (verify against the reference).
secondary #9EDFE9 — 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.

Typography

Heading: Geist
Body: LayGrotesk
Mono: FT System Mono
h1: 68px
h2: 14px
body: 18px

Spacing

base unit: 4px
scale: 4px, 7px, 8px, 10px, 11px, 12px, 14px, 20px, 24px, 32px

Radii

base: 0px
button: 9999px

Shadows (elevation)

card: rgba(0, 0, 0, 0.1) 0px 2px 10px 0px

Motion

Micro-interactions run at 300ms (dominant) with cubic-bezier(0.4, 0, 0.2, 1).

durations: 300ms · 400ms · 200ms
easings: cubic-bezier(0.4, 0, 0.2, 1) · ease
animated properties: scale, background-color, transform, translate

Native design tokens

Token	Value
`--background`	`oklch(100% 0 0)`
`--foreground`	`oklch(14.1% .005 285.823)`
`--card`	`oklch(100% 0 0)`
`--card-foreground`	`oklch(14.1% .005 285.823)`
`--popover`	`oklch(100% 0 0)`
`--popover-foreground`	`oklch(14.1% .005 285.823)`
`--primary`	`oklch(21% .006 285.885)`
`--primary-foreground`	`oklch(98.5% 0 0)`
`--secondary`	`oklch(96.7% .001 286.375)`
`--secondary-foreground`	`oklch(21% .006 285.885)`

…and 110 more measured on the page.

Button states (measured)

primary hover: background oklab(0.946192 0 0)
primary focus: outline 1px auto oklab(0.705 0.00415142 -0.0144141 / 0.5)

Layout (measured)

container max-width: 1376px
nav: 80px fixed
common grid: 2 columns

Motion choreography (measured)

Load order: div.osano-cm-info-dialog__in → div.osano-cm-window__dialog → button.osano-cm-dialog__close → button.osano-cm-dialog__close → button.osano-cm-dialog__close → button.osano-cm-dialog__close

Scroll reveal: 2 elements rest at opacity 0, animate in over 0.3s cubic-bezier(0.4, 0, 0.2, 1).

Stagger: div ×4 — 50ms apart.

Responsive (measured)

breakpoints: 640px · 768px · 1024px · 1280px · 1520px · 1536px
mobile (390px): hero 34px · nav hamburger

Full design system, per-section tokens & DESIGN.md / Tailwind / CSS exports →

Screens

Coder - Secure Environments Where Devs and Agents Work in Parallel