add DESIGN.md

Author: masseater

apps/ops-harbor/DESIGN.md

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+# Design System Inspiration of Airtable
+
+## 1. Visual Theme & Atmosphere
+
+Airtable's website is a clean, enterprise-friendly platform that communicates "sophisticated simplicity" through a white canvas with deep navy text (`#181d26`) and Airtable Blue (`#1b61c9`) as the primary interactive accent. The Haas font family (display + text variants) creates a Swiss-precision typography system with positive letter-spacing throughout.
+
+**Key Characteristics:**
+- White canvas with deep navy text (`#181d26`)
+- Airtable Blue (`#1b61c9`) as primary CTA and link color
+- Haas + Haas Groot Disp dual font system
+- Positive letter-spacing on body text (0.08px–0.28px)
+- 12px radius buttons, 16px–32px for cards
+- Multi-layer blue-tinted shadow: `rgba(45,127,249,0.28) 0px 1px 3px`
+- Semantic theme tokens: `--theme_*` CSS variable naming
+
+## 2. Color Palette & Roles
+
+### Primary
+- **Deep Navy** (`#181d26`): Primary text
+- **Airtable Blue** (`#1b61c9`): CTA buttons, links
+- **White** (`#ffffff`): Primary surface
+- **Spotlight** (`rgba(249,252,255,0.97)`): `--theme_button-text-spotlight`
+
+### Semantic
+- **Success Green** (`#006400`): `--theme_success-text`
+- **Weak Text** (`rgba(4,14,32,0.69)`): `--theme_text-weak`
+- **Secondary Active** (`rgba(7,12,20,0.82)`): `--theme_button-text-secondary-active`
+
+### Neutral
+- **Dark Gray** (`#333333`): Secondary text
+- **Mid Blue** (`#254fad`): Link/accent blue variant
+- **Border** (`#e0e2e6`): Card borders
+- **Light Surface** (`#f8fafc`): Subtle surface
+
+### Shadows
+- **Blue-tinted** (`rgba(0,0,0,0.32) 0px 0px 1px, rgba(0,0,0,0.08) 0px 0px 2px, rgba(45,127,249,0.28) 0px 1px 3px, rgba(0,0,0,0.06) 0px 0px 0px 0.5px inset`)
+- **Soft** (`rgba(15,48,106,0.05) 0px 0px 20px`)
+
+## 3. Typography Rules
+
+### Font Families
+- **Primary**: `Haas`, fallbacks: `-apple-system, system-ui, Segoe UI, Roboto`
+- **Display**: `Haas Groot Disp`, fallback: `Haas`
+
+### Hierarchy
+
+| Role | Font | Size | Weight | Line Height | Letter Spacing |
+|------|------|------|--------|-------------|----------------|
+| Display Hero | Haas | 48px | 400 | 1.15 | normal |
+| Display Bold | Haas Groot Disp | 48px | 900 | 1.50 | normal |
+| Section Heading | Haas | 40px | 400 | 1.25 | normal |
+| Sub-heading | Haas | 32px | 400–500 | 1.15–1.25 | normal |
+| Card Title | Haas | 24px | 400 | 1.20–1.30 | 0.12px |
+| Feature | Haas | 20px | 400 | 1.25–1.50 | 0.1px |
+| Body | Haas | 18px | 400 | 1.35 | 0.18px |
+| Body Medium | Haas | 16px | 500 | 1.30 | 0.08–0.16px |
+| Button | Haas | 16px | 500 | 1.25–1.30 | 0.08px |
+| Caption | Haas | 14px | 400–500 | 1.25–1.35 | 0.07–0.28px |
+
+## 4. Component Stylings
+
+### Buttons
+- **Primary Blue**: `#1b61c9`, white text, 16px 24px padding, 12px radius
+- **White**: white bg, `#181d26` text, 12px radius, 1px border white
+- **Cookie Consent**: `#1b61c9` bg, 2px radius (sharp)
+
+### Cards: `1px solid #e0e2e6`, 16px–24px radius
+### Inputs: Standard Haas styling
+
+## 5. Layout
+- Spacing: 1–48px (8px base)
+- Radius: 2px (small), 12px (buttons), 16px (cards), 24px (sections), 32px (large), 50% (circles)
+
+## 6. Depth
+- Blue-tinted multi-layer shadow system
+- Soft ambient: `rgba(15,48,106,0.05) 0px 0px 20px`
+
+## 7. Do's and Don'ts
+### Do: Use Airtable Blue for CTAs, Haas with positive tracking, 12px radius buttons
+### Don't: Skip positive letter-spacing, use heavy shadows
+
+## 8. Responsive Behavior
+Breakpoints: 425–1664px (23 breakpoints)
+
+## 9. Agent Prompt Guide
+- Text: Deep Navy (`#181d26`)
+- CTA: Airtable Blue (`#1b61c9`)
+- Background: White (`#ffffff`)
+- Border: `#e0e2e6`