---
name: Loops
description: "This site is a great example of modern SaaS design that balances developer-centric functionality with a clean, premium aesthetic."
version: alpha

colors:
  background: "#FFFFFF"
  primary: "#1C1917"
  secondary: "#78716C"
  neutral: "#A8A29E"
  bg-soft: "#FAFAF9"
  bg-quiet: "#F5F5F4"
  line: "rgba(0, 0, 0, 0.05)"

typography:
  display:
    fontFamily: transitional-serif
    fontSize: 56px
    lineHeight: 1.0
    fontWeight: 700
    letterSpacing: "-1px"
  heading:
    fontFamily: humanist-sans
    fontSize: 32px
    lineHeight: 1.2
    fontWeight: 700
    letterSpacing: "-0.5px"
  body:
    fontFamily: humanist-sans
    fontSize: 16px
    lineHeight: 1.5
    fontWeight: 400
    letterSpacing: "0px"
  caption:
    fontFamily: humanist-sans
    fontSize: 12px
    lineHeight: 1.4
    fontWeight: 500
    letterSpacing: "0.1px"

rounded:
  sm: 4px
  md: 8px
  lg: 12px
  pill: 999px

spacing:
  xs: 4px
  sm: 8px
  md: 12px
  lg: 16px
  xl: 24px
  2xl: 32px
  3xl: 48px

---

## Overview

A reliable, developer-first email platform for product, marketing, and transactional needs.

*A clean, high-performance engine room for growth teams.*

## Colors

High-contrast neutrals with restrained use of a single brand accent.

- **Background (`#FFFFFF`)** — uses `bg` token
- **Primary text (`#1C1917`)** — uses `ink` token
- **Secondary text (`#78716C`)** — uses `ink-soft` token
- **Muted (`#A8A29E`)** — uses `muted` token
- **Borders (`rgba(0, 0, 0, 0.05)`)** — uses `line` token

## Typography

- **Display:** transitional-serif
- **Body:** humanist-sans
- **Mono:** geometric-mono

- Use Newsreader for display headlines to establish authority.
- Use Inter for body text to ensure high legibility and a clean interface.
- Use Geist Mono for technical snippets and data labels.

## Layout

Fluid grid with a focused, narrow central content column.

*Rhythm:* Consistent 4px base unit with standard vertical rhythm.

## Elevation & Depth

- 0px 1px 4px 0px rgba(0, 0, 0, 0.05)
- 0px 2px 6px 0px rgba(0, 0, 0, 0.03)
- Borders: 1px solid rgba(0, 0, 0, 0.05)

## Shapes

- `sm`: 4px
- `md`: 8px
- `lg`: 12px
- `pill`: 999px

## Components

- **button:** Solid primary (ink) and outlined secondary styles with pill-radius.
- **card:** Lightly bordered containers with subtle shadows for data presentation.
- **chip:** Small pill-shaped badges with a subtle border and muted background.
- **input:** Minimal, clean input fields with subtle borders.
- **hero:** Large, centered serif headline supported by clean sans-serif body text.

## Do's and Don'ts

**Don't:**
- don't use vibrant gradients — screenshot shows a clean white background instead.
- don't use playful typography — screenshot shows a mix of serious serif and clean sans-serif instead.
- don't use rounded cards everywhere — screenshot shows sharp-cornered buttons and pill-shaped chips instead.
- don't use a loud primary accent color — screenshot shows high-contrast neutrals with minimal color instead.
- don't use complex shadows — screenshot shows very subtle, low-opacity shadows instead.
- don't use a cluttered layout — screenshot shows ample whitespace and a centered content column instead.

---

## System Prompt (paste into AI agent)

```
Positioning: Loops is a clean, reliable email platform for developers and growth teams. Key hex colors: #FFFFFF (bg), #1C1917 (ink), #A8A29E (muted), #FAFAF9 (bgSoft). Font categories: transitional-serif (display), humanist-sans (body), geometric-mono (data). Critical donts: don't use vibrant gradients; screenshot shows white instead. don't use playful fonts; screenshot shows Newsreader and Inter instead. don't use a single dominant accent color; screenshot shows neutrals instead.
```