feat(design-systems): add Slack design system (#899)

* feat(design-systems): add Slack design system * fix(i18n): cover slack design system in de/ru/fr fallback lists The localized-content coverage test scans design-systems/*/DESIGN.md and asserts every id appears in each locale's designSystems list. Adding the slack design system without a locale fallback entry breaks de/ru/fr CI. --------- Co-authored-by: lefarcen <935902669@qq.com>
2026-05-31 19:04:39 +07:00 · 2026-05-09 06:02:27 +05:00 · 2026-05-09 06:02:27 +05:00 · 01851aa32a
commit 01851aa32a
parent 0d66643f33
4 changed files with 366 additions and 0 deletions
--- a/apps/web/src/i18n/content.fr.ts
+++ b/apps/web/src/i18n/content.fr.ts
@ -437,6 +437,7 @@ export const FR_DESIGN_SYSTEM_IDS_WITH_EN_FALLBACK = [
  'shadcn',
  'simple',
  'skeumorphism',
+  'slack',
  'sleek',
  'spacious',
  'storytelling',
--- a/apps/web/src/i18n/content.ru.ts
+++ b/apps/web/src/i18n/content.ru.ts
@ -437,6 +437,7 @@ export const RU_DESIGN_SYSTEM_IDS_WITH_EN_FALLBACK = [
  'shadcn',
  'simple',
  'skeumorphism',
+  'slack',
  'sleek',
  'spacious',
  'storytelling',
--- a/apps/web/src/i18n/content.ts
+++ b/apps/web/src/i18n/content.ts
@ -486,6 +486,7 @@ const DE_DESIGN_SYSTEM_IDS_WITH_EN_FALLBACK = [
  'shadcn',
  'simple',
  'skeumorphism',
+  'slack',
  'sleek',
  'spacious',
  'storytelling',
--- a/design-systems/slack/DESIGN.md
+++ b/design-systems/slack/DESIGN.md
@ -0,0 +1,363 @@
+# Design System Inspired by Slack
+
+> Category: Productivity & SaaS
+> Workplace communication platform. Aubergine-primary, multi-accent logo palette, light surfaces with dark sidebar, warm and approachable.
+
+## 1. Visual Theme & Atmosphere
+
+Slack's identity is built around the idea that work should feel human and even a little fun. The canonical surface is **light** — white content areas with a deep aubergine (`#4A154B`) sidebar — the inverse of dark-first tools. This contrast is intentional: the sidebar is a calm, always-present navigation anchor, while the content area is bright and open.
+
+The logo palette — blue, green, yellow, red — appears primarily in the hashtag icon and marketing contexts, not scattered through the UI. In the product itself, Slack uses a restrained, professional color system with aubergine as the sole brand anchor.
+
+**Key Characteristics:**
+- Light-first content surfaces: white `#FFFFFF` and near-white `#F8F8F8`
+- Deep aubergine `#4A154B` sidebar — the brand's most recognizable UI element
+- Four logo accent colors (blue, green, yellow, red) used sparingly as highlights only
+- Larsseit for headings (marketing), system sans-serif for UI
+- Rounded but not cartoonish: 4–8px radius on most components
+- Dense but breathable: compact message rows with clear thread hierarchy
+- Warm and conversational tone — emojis, reactions, and illustrations are first-class
+
+---
+
+## 2. Color Palette & Roles
+
+### Brand Primary
+| Token | Hex | Role |
+|---|---|---|
+| `--color-aubergine` | `#4A154B` | Sidebar background, primary brand color |
+| `--color-aubergine-dark` | `#350d36` | Hover states on aubergine surfaces |
+| `--color-aubergine-light` | `#611f69` | Active item highlight in sidebar |
+
+### Logo Accent Colors (use sparingly — highlights, icons, marketing only)
+| Token | Hex | Name | Role |
+|---|---|---|---|
+| `--color-blue` | `#36C5F0` | Sky Blue | Channel icons, links, info states |
+| `--color-green` | `#2EB67D` | Teal Green | Online status, success states |
+| `--color-yellow` | `#ECB22E` | Gold | Away status, warnings, highlights |
+| `--color-red` | `#E01E5A` | Ruby | Notifications, errors, mentions badge |
+
+### Surface & Background
+| Token | Hex | Role |
+|---|---|---|
+| `--bg-primary` | `#FFFFFF` | Main message area, modals |
+| `--bg-secondary` | `#F8F8F8` | Thread panels, secondary surfaces |
+| `--bg-tertiary` | `#F1F1F1` | Input backgrounds, hover states |
+| `--bg-sidebar` | `#4A154B` | Left sidebar (aubergine) |
+| `--bg-sidebar-hover` | `rgba(255,255,255,0.1)` | Sidebar item hover |
+| `--bg-sidebar-active` | `rgba(255,255,255,0.2)` | Active sidebar item |
+| `--bg-message-hover` | `#F8F8F8` | Message row hover |
+
+### Text Colors
+| Token | Hex | Role |
+|---|---|---|
+| `--text-primary` | `#1D1C1D` | Primary body text (near-black) |
+| `--text-secondary` | `#616061` | Timestamps, muted labels |
+| `--text-sidebar` | `rgba(255,255,255,0.9)` | Sidebar channel names |
+| `--text-sidebar-muted` | `rgba(255,255,255,0.6)` | Sidebar inactive items |
+| `--text-link` | `#1264A3` | Inline links in messages |
+| `--text-mention` | `#1264A3` | @mention text color |
+
+### Semantic Colors
+| Token | Hex | Role |
+|---|---|---|
+| `--color-success` | `#2EB67D` | Success toasts, positive states |
+| `--color-warning` | `#ECB22E` | Warning states |
+| `--color-danger` | `#E01E5A` | Error states, destructive actions |
+| `--color-info` | `#36C5F0` | Informational highlights |
+
+### Border & Divider
+| Token | Hex | Role |
+|---|---|---|
+| `--border-default` | `#DDDDDD` | Standard dividers, card borders |
+| `--border-subtle` | `#F1F1F1` | Subtle separators between rows |
+| `--border-focus` | `#1264A3` | Focus ring color |
+
+---
+
+## 3. Typography Rules
+
+### Typefaces
+| Role | Official | Web Fallback |
+|---|---|---|
+| Display / Marketing Headings | Larsseit | `'Larsseit', 'Helvetica Neue', Arial, sans-serif` |
+| UI / Body / Chrome | Slack Lato (custom) | `system-ui, -apple-system, BlinkMacSystemFont, sans-serif` |
+| Code / Monospace | — | `'Monaco', 'Menlo', 'Courier New', monospace` |
+
+> Slack uses **Larsseit** for marketing headlines and a custom Lato variant for in-product UI. For web use, `system-ui` is the safest fallback.
+
+### Type Scale
+
+| Level | Size | Weight | Line Height | Letter Spacing | Usage |
+|---|---|---|---|---|---|
+| Display XL | 48px | 800 | 1.1 | -1px | Marketing hero headlines |
+| Display L | 36px | 700 | 1.15 | -0.5px | Section heroes |
+| Heading 1 | 28px | 700 | 1.25 | normal | Modal titles, page headers |
+| Heading 2 | 22px | 700 | 1.3 | normal | Card titles, settings sections |
+| Heading 3 | 18px | 700 | 1.35 | normal | Sub-section headers |
+| Body L | 16px | 400 | 1.5 | normal | Message text, descriptions |
+| Body | 15px | 400 | 1.46667 | normal | Default UI text (Slack's base size) |
+| Body SM | 13px | 400 | 1.38462 | normal | Secondary metadata |
+| Caption | 12px | 400 | 1.33 | normal | Timestamps, hints |
+| Code | 12px | 400 | 1.5 | normal | Inline code, code blocks |
+
+### Type Rules
+- Slack's base body size is **15px** — slightly smaller than 16px for density
+- Unread channels: weight 700 — bold is the primary unread indicator
+- Timestamps: 12px `--text-secondary`, show on hover only
+- Code blocks: background `#F8F8F8`, border `1px solid #DDDDDD`, border-radius 4px
+- Never use font sizes below 12px
+- Marketing headings: letter-spacing `-1px` for large display sizes
+
+---
+
+## 4. Component Stylings
+
+### Buttons
+
+```css
+/* Primary */
+.btn-primary {
+  background: #4A154B;
+  color: #FFFFFF;
+  border-radius: 4px;
+  padding: 0 16px;
+  height: 36px;
+  font-size: 15px;
+  font-weight: 700;
+  border: none;
+}
+.btn-primary:hover { background: #611f69; }
+
+/* Secondary */
+.btn-secondary {
+  background: #FFFFFF;
+  color: #1D1C1D;
+  border: 1px solid #DDDDDD;
+  border-radius: 4px;
+  padding: 0 16px;
+  height: 36px;
+  font-size: 15px;
+  font-weight: 700;
+}
+.btn-secondary:hover { background: #F8F8F8; }
+
+/* Danger */
+.btn-danger {
+  background: #E01E5A;
+  color: #FFFFFF;
+  border-radius: 4px;
+}
+.btn-danger:hover { background: #B3114A; }
+```
+
+### Input Fields
+```css
+.input {
+  background: #FFFFFF;
+  border: 1px solid #DDDDDD;
+  border-radius: 4px;
+  color: #1D1C1D;
+  font-size: 15px;
+  padding: 8px 12px;
+  height: 36px;
+}
+.input:focus {
+  border-color: #1264A3;
+  box-shadow: 0 0 0 2px rgba(18,100,163,0.25);
+  outline: none;
+}
+```
+
+### Sidebar Channel Item
+```css
+.channel-item {
+  height: 28px;
+  padding: 0 16px;
+  border-radius: 6px;
+  color: rgba(255,255,255,0.7);
+  font-size: 15px;
+  font-weight: 400;
+}
+.channel-item:hover {
+  background: rgba(255,255,255,0.1);
+  color: #FFFFFF;
+}
+.channel-item.active {
+  background: rgba(255,255,255,0.2);
+  color: #FFFFFF;
+}
+.channel-item.unread {
+  color: #FFFFFF;
+  font-weight: 700;
+}
+```
+
+### Unread Badge
+```css
+.badge {
+  background: #E01E5A;
+  color: #FFFFFF;
+  border-radius: 8px;
+  font-size: 11px;
+  font-weight: 700;
+  padding: 1px 6px;
+  min-width: 18px;
+}
+```
+
+### Message Attachments / Cards
+```css
+.attachment {
+  border-left: 4px solid #DDDDDD;
+  background: #F8F8F8;
+  border-radius: 0 4px 4px 0;
+  padding: 8px 12px;
+  margin: 4px 0;
+}
+```
+
+### Reactions
+```css
+.reaction {
+  border: 1px solid #DDDDDD;
+  border-radius: 24px;
+  background: #F8F8F8;
+  padding: 2px 8px;
+  font-size: 13px;
+  cursor: pointer;
+}
+.reaction:hover { background: #F1F1F1; }
+.reaction.active {
+  background: rgba(18,100,163,0.1);
+  border-color: #1264A3;
+}
+```
+
+---
+
+## 5. Layout Principles
+
+### Three-Column Layout
+```
+┌──────────────┬──────────────────────────────┬─────────────┐
+│   Sidebar    │        Message Area          │   Thread    │
+│   (240px)    │          (flex: 1)           │  (400px)    │
+│  #4A154B     │          #FFFFFF             │  optional   │
+└──────────────┴──────────────────────────────┴─────────────┘
+```
+
+### Spacing System (4px base)
+| Token | Value | Usage |
+|---|---|---|
+| `--space-1` | 4px | Tight gaps |
+| `--space-2` | 8px | Component padding |
+| `--space-3` | 12px | Input padding |
+| `--space-4` | 16px | Standard padding |
+| `--space-6` | 24px | Card padding |
+| `--space-8` | 32px | Section gaps |
+
+### Sidebar Structure
+```
+[Workspace Name ▼]
+────────────────────
+Threads
+All DMs
+Drafts & Sent
+────────────────────
+▼ Channels
+  # general
+  # random
+  # design  ● (unread)
+────────────────────
+▼ Direct Messages
+  John Doe
+  Jane Smith
+```
+
+### Message Composer
+- Pinned to bottom of message area
+- `border: 1px solid #DDDDDD`, `border-radius: 8px`, `margin: 0 16px 16px`
+- Toolbar: emoji, attach, format, send button
+
+---
+
+## 6. Depth & Elevation
+
+Slack uses light shadows on a light surface:
+
+| Level | Usage | Shadow |
+|---|---|---|
+| Flat | Message rows, sidebar items | none |
+| Low | Cards, inputs | `0 1px 3px rgba(0,0,0,0.08)` |
+| Medium | Dropdowns, popovers | `0 4px 12px rgba(0,0,0,0.12)` |
+| High | Modals, dialogs | `0 8px 24px rgba(0,0,0,0.15)` |
+| Overlay | Modal backdrops | `rgba(0,0,0,0.5)` |
+
+---
+
+## 7. Do's and Don'ts
+
+### ✅ Do
+- Use aubergine `#4A154B` for the sidebar — it is Slack's most iconic UI element
+- Keep the main content area white and light
+- Use `#1D1C1D` (near-black) for all body text, not pure black
+- Bold channel names to show unread status — weight is the indicator
+- Use the four accent colors only for semantic roles (success, warning, danger, info)
+- Apply `border-left: 4px` on message attachments and embeds
+- Show timestamps on hover only
+- Use `#1264A3` for links and focus states
+- Keep sidebar items compact: 28px height, 6px border-radius
+
+### ❌ Don't
+- Don't use a dark main content area — Slack is light-first
+- Don't scatter blue/green/yellow/red as decorative accents
+- Don't use pure black `#000000` for text
+- Don't use speech bubbles — messages are flat rows
+- Don't make buttons large-radius — 4px is standard
+- Don't show timestamps permanently
+- Don't use ALL CAPS for channel names
+- Don't use font sizes below 12px
+
+---
+
+## 8. Responsive Behavior
+
+### Breakpoints
+| Breakpoint | Width | Layout |
+|---|---|---|
+| Mobile | < 768px | Single panel, sidebar as left drawer |
+| Tablet | 768–1024px | Sidebar + message area only |
+| Desktop | > 1024px | Full three-column layout |
+
+### Mobile Adaptations
+- Sidebar: left drawer, swipe right to open
+- Bottom tab bar: Home, DMs, Activity, You
+- Thread panel: full-screen overlay
+- Composer: pinned above keyboard
+- Channel list items: 44px touch target height
+- Aubergine top header bar retained on mobile
+
+---
+
+## 9. Agent Prompt Guide
+
+When generating Slack-styled designs, follow this approach:
+
+**Color application:**
+> Set `background: #FFFFFF` as the main canvas. Use `#4A154B` (aubergine) for the sidebar. All primary text is `#1D1C1D`. Links and focus rings use `#1264A3`. The four logo colors — `#36C5F0`, `#2EB67D`, `#ECB22E`, `#E01E5A` — are semantic only: info, success, warning, danger.
+
+**Typography:**
+> Use `system-ui, -apple-system, sans-serif` for all UI. Base size is 15px. Unread channels: weight 700. Body text: weight 400. Timestamps: 12px `#616061`, hover-only. Code: `Monaco, Menlo, monospace`, 12px, `#F8F8F8` background.
+
+**Layout:**
+> Three columns: 240px aubergine sidebar + flex white message area + optional 400px thread panel. Sidebar items: 28px height, 6px radius, bold when unread. Composer: pinned bottom, `border: 1px solid #DDDDDD`, `border-radius: 8px`.
+
+**Components:**
+> Buttons: 4px radius, 36px height, aubergine primary. Inputs: `1px solid #DDDDDD` border, `#1264A3` focus ring. Message rows: flat, no bubbles, 36px circle avatar. Reactions: pill `border: 1px solid #DDDDDD`, `border-radius: 24px`.
+
+**Tone:**
+> Slack is warm, professional, and human. Empty states use friendly illustrations. CTAs are direct: "Send message", "Get started". Error messages are clear and helpful. Never alarming.
+
+**Anti-patterns to avoid:**
+> No dark content area. No speech bubbles. No pure black text. No scattered multi-color accents. No ALL CAPS channel names. No font below 12px. No large button radius.