:root{--font-family: "Helvetica", "Arial", sans-serif;--font-base-size: 16px;--space-xs: .25rem;--space-sm: .5rem;--space-lg: 1rem;--control-height: 2rem;--control-height-touch: 2.75rem;--motion-fast: .16s;--motion-standard: .22s;--motion-confirm-lock: 3s;--ease-standard: cubic-bezier(.2, 0, 0, 1);--shadow-sm: 0 1px 2px var(--color-shadow-sm);--shadow-lg: 0 10px 30px var(--color-shadow-lg);--gradient-control: linear-gradient(135deg, var(--color-gradient-control-start), var(--color-gradient-control-end));--gradient-surface: linear-gradient(135deg, var(--color-gradient-surface-start), var(--color-gradient-surface-end))}