Shortwave — Design System

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

Shortwave automates email in round geometry: Poppins at 64px/400 white on deep space, 16-18px body, and flat text CTAs. AI-agent chat panels and inbox screenshots do the demonstrating while gradient auroras keep the dark canvas alive — the Google-alumni email client that pitches AI triage with a friendly, circular voice.

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/shortwave.

Tokens

Shortwave's decoded design system: background #0F0F16, text #ECECEE, accent #356AFF, link #9E9EFF, primary #356AFF; type scale h1 64px / h2 52px / body 16px; 8px spacing base; 8px base radius. The single interactive/action color is #356AFF — used only on interactive or must-notice elements (buttons, links, key highlights), never on large fills.

Color roles

Using these colors

• Action color #356AFF — the single interactive color; only on things you click or must notice, never large fills.
• primary, accent, button_bg are all #356AFF — one role, not several (the action color).
• accent #356AFF — 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 #9E9EFF — inline text links and link-styled controls.
• secondary #6593FF — 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: Poppins
• Body: Poppins
• h1: 64px
• h2: 52px
• body: 16px

Spacing

• base unit: 8px
• scale: 4px, 8px, 12px, 16px, 20px, 24px, 26px, 32px, 48px, 50px

Radii

• base: 8px
• button: 8px

Motion

Micro-interactions run at 200ms (dominant) with ease-in-out.

• durations: 200ms · 300ms
• easings: ease-in-out · ease
• animated properties: color, background-color, border-color, background

Native design tokens

…and 19 more measured on the page.

Button states (measured)

• primary hover: background #4D7EFF

Layout (measured)

• nav: 80px fixed

Motion choreography (measured)

Load order: span.emotion-cache-57eetd

Responsive (measured)

• breakpoints: 799px · 1200px · 1599px
• mobile (390px): hero 48px · nav inline

Per-section tokens (9)

• Hero — dark · bg #0E1246 · text #3E476F · 2 col · split
• Logo Wall — dark · bg #0F1016 · text #71727A · 3 col · split
• Feature — dark · bg #0F1016 · text #585D7D · 1 col · left
• CTA / Sign-up — dark · bg #0F1016 · text #2F3554 · 1 col · left
• Feature — dark · bg #0F1016 · text #474A5F · 1 col · center
• Testimonial / Social Proof — dark · bg #16171F · text #454654 · 1 col · left
• Gallery / Showcase — dark · bg #16171F · text #3E3F48 · 3 col · split
• Feature — dark · bg #16171F · text #393A42 · 3 col · split
• CTA / Sign-up — dark · bg #0F1016 · text #535C81 · 2 col · split

Export: DESIGN.md

# Shortwave — Design System

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

Shortwave automates email in round geometry: Poppins at 64px/400 white on deep space, 16-18px body, and flat text CTAs. AI-agent chat panels and inbox screenshots do the demonstrating while gradient auroras keep the dark canvas alive — the Google-alumni email client that pitches AI triage with a friendly, circular voice.

## Colors

| Role | Value |
|------|-------|
| bg | `#0F0F16` |
| surface | `#1C1C22` |
| border | `#303036` |
| text | `#ECECEE` |
| text_muted | `#98989B` |
| primary | `#356AFF` |
| accent | `#356AFF` |
| link | `#9E9EFF` |
| secondary | `#6593FF` |
| button_bg | `#356AFF` |
| button_text | `#FFFFFF` |

**Using these colors**

- **Action color** `#356AFF` — 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`, `button_bg` are all `#356AFF` — one role, not several (your action color).
- **accent** `#356AFF` — 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** `#9E9EFF` — inline text links and link-styled controls.
- **secondary** `#6593FF` — 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): `#0F0F16` 78.7% · `#0F1244` 15.2% · `#40466B` 6.1%

## Typography

- Heading: **Poppins**
- Body: **Poppins**

| Role | Size / weight · line-height · tracking |
|------|------------------------------------------|
| hero | 64px / 400 · lh 76px |
| h2 | 52px / 400 · lh 54px |
| h3 | 34px / 400 · lh 42px |
| body | 18px / 400 · lh 28px · tracking 0.2px |
| small | 16px / 600 · lh 24px · tracking 0.2px |

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

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

## Spacing
- base unit: 8px (inferred from the measured scale)
- measured scale: 4px, 8px, 12px, 16px, 20px, 24px, 26px, 32px, 48px, 50px — snap all gaps/padding to these

## Radius
- base: 8px
- button: 8px
- card: 12px

## Buttons

| Button | Fill / text | Border | Radius | Padding | Font | Shadow |
|--------|-------------|--------|--------|---------|------|--------|
| primary | `#356AFF` / `#FFFFFF` | none | 8px | 16px 32px 16px 32px | 600 16px | none |
| secondary | `rgba(0, 0, 0, 0)` / `#FFFFFF` | none | 8px | 0px 0px 0px 0px | 600 16px / 0.2px | none |

**States (measured, not guessed)**

- primary hover: background `#4D7EFF`
- secondary hover: color `#6593FF`
- transition: `background-color 0.2s ease-in-out`

## Motion
- durations: 200ms (dominant) · 300ms
- easings: `ease-in-out` (dominant) · `ease`
- animated properties: color, background-color, border-color, background

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 |
|-------|-------|
| `--bg` | `#0F0F16` |
| `--card-bg` | `#161620` |
| `--card-border` | `rgba(255, 255, 255, 0.12)` |
| `--card-border-shine` | `rgba(255, 255, 255, 0.24)` |
| `--nav-bg` | `rgba(22, 22, 22, 0.4)` |
| `--primary` | `#356AFF` |
| `--primary-text` | `#6593FF` |
| `--primary-shine` | `#abc7ff` |
| `--primary-hover` | `#4D7EFF` |
| `--blue-splash` | `#0f1354` |
| `--cta-lowlight-splash` | `#0055ff42` |
| `--sea-green` | `#60D1D1` |

_…and 17 more measured on the page._

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

## Layout (measured)
- nav: 80px fixed

## Motion choreography (measured)
Load order: `span.emotion-cache-57eetd` @0ms

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

## Components (measured)
- link: #A1A1A1 · underline — hover #FFFFFF
- disabled: bg rgba(0, 0, 0, 0) · text #A1A1A1

## Responsive (measured)
- breakpoints: 799px · 1200px · 1599px
- mobile (390px): hero 48px · body 16px · 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/shortwave

Export: Tailwind v4 (@theme)

@theme {
  /* action color #356AFF — the one interactive color; buttons/links/emphasis only, never large fills. */
  --color-bg: #0F0F16;
  --color-surface: #1C1C22;
  --color-border: #303036;
  --color-text: #ECECEE;
  --color-text-muted: #98989B;
  --color-primary: #356AFF;  /* primary brand / action color. */
  --color-accent: #356AFF;  /* 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: #9E9EFF;  /* inline text links and link-styled controls. */
  --color-secondary: #6593FF;  /* 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: #356AFF;  /* primary-button fill — the main call-to-action color. */
  --color-button-text: #FFFFFF;
  /* fonts: Poppins — free, on Google. */
  --font-heading: "Poppins", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Poppins", system-ui, -apple-system, 'Segoe UI', sans-serif;
  /* measured weights: 400, 600 — use these, not 400/600 */
  --text-hero: 64px; --font-weight-hero: 400; --leading-hero: 76px;
  --text-h2: 52px; --font-weight-h2: 400; --leading-h2: 54px;
  --text-h3: 34px; --font-weight-h3: 400; --leading-h3: 42px;
  --text-body: 18px; --font-weight-body: 400; --leading-body: 28px; --tracking-body: 0.2px;
  --text-small: 16px; --font-weight-small: 600; --leading-small: 24px; --tracking-small: 0.2px;
  --radius-base: 8px;
  --radius-button: 8px;
  --radius-card: 12px;
  --color-btn-hover: #4D7EFF;  /* measured primary hover fill */
  --ease-brand: ease-in-out;
  --duration-fast: 200ms;  /* use: duration-[var(--duration-fast)] */
  --duration-base: 300ms;
  --spacing: 8px;  /* measured base — drives the p-*/gap-* scale. steps seen on the page: 4, 8, 12, 16, 20, 24, 26, 32, 48, 50px */
}

Export: CSS variables

:root {
  /* action color #356AFF — the one interactive color; buttons/links/emphasis only, never large fills. */
  --bg: #0F0F16;
  --surface: #1C1C22;
  --border: #303036;
  --text: #ECECEE;
  --text-muted: #98989B;
  --primary: #356AFF;  /* primary brand / action color. */
  --accent: #356AFF;  /* 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: #9E9EFF;  /* inline text links and link-styled controls. */
  --secondary: #6593FF;  /* 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: #356AFF;  /* primary-button fill — the main call-to-action color. */
  --button-text: #FFFFFF;
  --font-heading: "Poppins", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: "Poppins", system-ui, -apple-system, 'Segoe UI', sans-serif;
  --text-hero: 64px; --weight-hero: 400; --leading-hero: 76px;
  --text-h2: 52px; --weight-h2: 400; --leading-h2: 54px;
  --text-h3: 34px; --weight-h3: 400; --leading-h3: 42px;
  --text-body: 18px; --weight-body: 400; --leading-body: 28px; --tracking-body: 0.2px;
  --text-small: 16px; --weight-small: 600; --leading-small: 24px; --tracking-small: 0.2px;
  --radius: 8px;
  --radius-button: 8px;
  --radius-card: 12px;
  --btn-bg-hover: #4D7EFF;
  --ease: ease-in-out;
  --duration-fast: 200ms;
  --duration-base: 300ms;
}

/* their own tokens, verbatim from the site's :root */
:root {
  --bg: #0F0F16;
  --card-bg: #161620;
  --card-border: rgba(255, 255, 255, 0.12);
  --card-border-shine: rgba(255, 255, 255, 0.24);
  --nav-bg: rgba(22, 22, 22, 0.4);
  --primary: #356AFF;
  --primary-text: #6593FF;
  --primary-shine: #abc7ff;
  --primary-hover: #4D7EFF;
  --blue-splash: #0f1354;
  --cta-lowlight-splash: #0055ff42;
  --sea-green: #60D1D1;
}
/* fonts: Poppins — free, on Google. */