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Longport Whale
Design System

Radius, Spacing & Elevation

The radius ladder, density scale, and elevation tokens

Whale interfaces are dense and calm. Structure comes from a consistent radius ladder, compact control heights, and restrained elevation — not from decorative padding or heavy shadows.

Radius

The base radius is 0.5rem (8px). Use the ladder by role.

Radius Role
4 Compact status badge, category tag
6 Filter chip, pagination item, compact icon control
8 Button, input, select, inner attachment card (base)
10 Alert, toast, upload dropzone, summary block
12 Card, popover, menu, working surface, panel, drawer, dialog
full Avatar, status dot, switch, pill search field
  • Outer radius ≥ inner radius. When nesting, step the inner radius down one level.
  • Table cells and dividers stay square — do not round them.

Density

Whale is compact by default. Control heights and the base text size are fixed; do not shrink them further.

Token Value Role
Standard control 28px Buttons and most toolbar controls
Input / top-bar control 32px Inputs, top-bar search and chrome, avatar
Touch control 40px Deliberately prominent or touch-heavy entry
Table row 44px Default data row
Base text 13px Body and control text
Shell gap ~8px Gap between shell and working surface

Spacing symmetry

  • Every functional container uses balanced internal spacing; prefer equal padding on all four sides.
  • When horizontal and vertical spacing differ, left must match right and top must match bottom.
  • The same component role uses the same spacing across surfaces. Do not manufacture rhythm with unrelated one-sided padding utilities.
  • On both sides of a divider, give each side equivalent breathing room.

Elevation

Prefer a border to a shadow. Reserve elevation for genuinely floating layers.

Token Value Role
Card 0 1px 2px rgba(0,0,0,.04) Maximum lift for a resting surface — a border is preferred
Scrim rgba(24,24,27,.32) Blocking overlay behind dialogs, alerts, and drawers
  • Do not stack shadows or use elevation to manufacture hierarchy that the neutral scale and spacing can express.
  • Floating layers (popover, menu, dialog, drawer) use radius 12 and the scrim where they block interaction.
Whale Docs