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bada.design

Design Thinking Made Visible

Principle 1

Grid

The invisible scaffold that organizes space into predictable, measurable units. Every element aligns to a 12-column grid with consistent gutters, creating visual rhythm and spatial coherence.

Columns: 12
Gutter: 1.5rem
Ratio: 1:1:1...

Principle 2

Hierarchy

Typographic scale creates visual order by distinguishing information levels. A consistent modular scale (1.5:1 ratio) ensures that size relationships feel mathematically justified.

Ratio: 1.5:1
Base Size: 1rem
Levels: 6

H1 — 2.441rem

H2 — 1.627rem
H3 — 1.085rem

Body — 1rem

Caption — 0.667rem

Principle 3

Contrast

Visual contrast ensures readability and emphasis. WCAG AA standard requires 4.5:1 contrast for body text, 3:1 for large text. Contrast goes beyond color—shape, weight, and scale create distinction.

Min Body: 4.5:1
Min Large: 3:1
Standard: WCAG AA
7.2:1
Excellent
5.1:1
Good
4.5:1
Minimum
1.8:1
Fail

Principle 4

Rhythm

Repetition of visual elements at consistent intervals creates pattern and predictability. Rhythm can be regular (simple patterns) or syncopated (complex, breaking expectations strategically).

Baseline: 4rem
Pattern: Regular
Palette: 4 Accents

Principle 5

Balance

Balance is the visual weight distribution across a composition. Symmetrical balance feels stable; asymmetrical balance feels dynamic. Both can achieve equilibrium through careful spacing and emphasis.

Type: Asymmetrical
Weight: Distributed
Tension: Dynamic
Light, Far Heavy, Close Equilibrium

Design System in Practice

How principles combine into a cohesive system

Button States

Card Variations

Minimal

Essential information only

Emphasis

Primary content with accent

Color Application

Primary
Secondary
Tertiary
Accent

Spacing Scale

0.5
1
1.5
2
3