Color Palette for Scanner & Document Manager. Primary: #1E293B (on-primary: #FFFFFF). Secondary: #334155 (on-secondary: #FFFFFF). Accent: #2563EB (on-accent: #FFFFFF). Background: #F8FAFC. Foreground: #0F172A. Card: #FFFFFF (card-foreground: #0F172A). Muted: #F1F2F3 (muted-foreground: #64748B). Border: #E4E5E7. Destructive: #DC2626 (on-destructive: #FFFFFF). Ring: #1E293B. Notes: Document grey + scan blue.