Color & Contrast CONTRAST RATIO REQUIREMENTS (WCAG 2.1 / Apple HIG): - Normal text (<20pt): minimum 4.5:1 contrast ratio. - Large text (20pt+ regular or 14pt+ bold): minimum 3:1 contrast ratio. - Preferred: 7:1 for maximum readability. - UI components (icons, borders, controls): minimum 3:1 against background. SEMANTIC COLOR USAGE: - Red (.red / destructive): delete, remove, error, critical alert. - Green (.green): success, complete, enabled, positive. - Orange (.orange): warning, caution, attention needed. - Blue (.blue): informational, links, primary actions. - NEVER use red for positive ac…