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

# Design System: ElevenLabs — Typography Rules

## Font Families

- **Display**: `Waldenburg`, fallback: `Waldenburg Fallback`
- **Display Bold**: `WaldenburgFH`, fallback: `WaldenburgFH Fallback`
- **Body / UI**: `Inter`, fallback: `Inter Fallback`
- **Monospace**: `Geist Mono` or `ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas`

## Hierarchy

| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
|------|------|------|--------|-------------|----------------|-------|
| Display Hero | Waldenburg | 48px (3.00rem) | 300 | 1.08 (tight) | -0.96px | Whisper-thin, ethereal |
| Section Heading | Waldenburg | 36px (2.25rem) | 300 | 1.17 (tight) | normal | Light display |
| Card Heading | Waldenburg | 32px (2.00rem) | 300 | 1.13 (tight) | normal | Light card titles |
| Body Large | Inter | 20px (1.25rem) | 400 | 1.35 | normal | Introductions |
| Body | Inter | 18px (1.13rem) | 400 | 1.44–1.60 | 0.18px | Standard reading text |
| Body Standard | Inter | 16px (1.00rem) | 400 | 1.50 | 0.16px | UI text |
| Body Medium | Inter | 16px (1.00rem) | 500 | 1.50 | 0.16px | Emphasized body |
| Nav / UI | Inter | 15px (0.94rem) | 500 | 1.33–1.47 | 0.15px | Navigation links |
| Button | Inter | 15px (0.94rem) | 500 | 1.47 | normal | Button labels |
| Button Uppercase | WaldenburgFH | 14px (0.88rem) | 700 | 1.10 (tight) | 0.7px | `text-transform: uppercase` |
| Caption | Inter | 14px (0.88rem) | 400–500 | 1.43–1.50 | 0.14px | Metadata |
| Small | Inter | 13px (0.81rem) | 500 | 1.38 | normal | Tags, badges |
| Code | Geist Mono | 13px (0.81rem) | 400 | 1.85 (relaxed) | normal | Code blocks |
| Micro | Inter | 12px (0.75rem) | 500 | 1.33 | normal | Tiny labels |
| Tiny | Inter | 10px (0.63rem) | 400 | 1.60 (relaxed) | normal | Fine print |

## Principles

- **Light as the hero weight**: Waldenburg at 300 is the defining typographic choice. Where other design systems use bold for impact, ElevenLabs uses lightness — thin strokes that feel like audio waveforms, creating intrigue through restraint.
- **Positive letter-spacing on body**: Inter uses +0.14px to +0.18px tracking across body text, creating an airy, well-spaced reading rhythm that contrasts with the tight display tracking (-0.96px).
- **WaldenburgFH for emphasis**: A bold (700) uppercase variant of Waldenburg appears only in specific CTA button labels with 0.7px letter-spacing — the one place where the type system gets loud.
- **Monospace as ambient**: Geist Mono at relaxed line-height (1.85) for code blocks feels unhurried and readable.
