<!-- SPDX-License-Identifier: MIT -->
<!-- SPDX-FileCopyrightText: 2025-2026 Marcus Quinn -->

# Design System: Lovable — Typography Rules

## Font Family

- **Primary**: `Camera Plain Variable`, with fallbacks: `ui-sans-serif, system-ui`
- **Weight range**: 400 (body/reading), 480 (special display), 600 (headings/emphasis)
- **Feature**: Variable font with continuous weight axis — allows fine-tuned intermediary weights like 480.

## Hierarchy

| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
|------|------|------|--------|-------------|----------------|-------|
| Display Hero | Camera Plain Variable | 60px (3.75rem) | 600 | 1.00–1.10 (tight) | -1.5px | Maximum impact, editorial |
| Display Alt | Camera Plain Variable | 60px (3.75rem) | 480 | 1.00 (tight) | normal | Lighter hero variant |
| Section Heading | Camera Plain Variable | 48px (3.00rem) | 600 | 1.00 (tight) | -1.2px | Feature section titles |
| Sub-heading | Camera Plain Variable | 36px (2.25rem) | 600 | 1.10 (tight) | -0.9px | Sub-sections |
| Card Title | Camera Plain Variable | 20px (1.25rem) | 400 | 1.25 (tight) | normal | Card headings |
| Body Large | Camera Plain Variable | 18px (1.13rem) | 400 | 1.38 | normal | Introductions |
| Body | Camera Plain Variable | 16px (1.00rem) | 400 | 1.50 | normal | Standard reading text |
| Button | Camera Plain Variable | 16px (1.00rem) | 400 | 1.50 | normal | Button labels |
| Button Small | Camera Plain Variable | 14px (0.88rem) | 400 | 1.50 | normal | Compact buttons |
| Link | Camera Plain Variable | 16px (1.00rem) | 400 | 1.50 | normal | Underline decoration |
| Link Small | Camera Plain Variable | 14px (0.88rem) | 400 | 1.50 | normal | Footer links |
| Caption | Camera Plain Variable | 14px (0.88rem) | 400 | 1.50 | normal | Metadata, small text |

## Principles

- **Warm humanist voice**: Camera Plain Variable gives Lovable its approachable personality. The slightly rounded terminals and organic curves contrast with the sharp geometric sans-serifs used by most developer tools.
- **Variable weight as design tool**: The font supports continuous weight values (e.g., 480), enabling nuanced hierarchy beyond standard weight stops. Weight 480 at 60px creates a display style that feels lighter than semibold but stronger than regular.
- **Compression at scale**: Headlines use negative letter-spacing (-0.9px to -1.5px) for editorial impact. Body text stays at normal tracking for comfortable reading.
- **Two weights, clear roles**: 400 (body/UI/links/buttons) and 600 (headings/emphasis). The narrow weight range creates hierarchy through size and spacing, not weight variation.
