Color Palette for Calculator & Unit Converter. Primary: #EA580C (on-primary: #FFFFFF). Secondary: #F97316 (on-secondary: #FFFFFF). Accent: #2563EB (on-accent: #FFFFFF). Background: #1C1917. Foreground: #FFFFFF. Card: #262321 (card-foreground: #FFFFFF). Muted: #2C1E16 (muted-foreground: #94A3B8). Border: rgba(255,255,255,0.08). Destructive: #DC2626 (on-destructive: #FFFFFF). Ring: #EA580C. Notes: Operation orange on dark.