/* 4px base scale (Tailwind steps the app actually uses). */
:root{
  --space-0:0px;--space-0-5:2px;--space-1:4px;--space-1-5:6px;--space-2:8px;--space-2-5:10px;
  --space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;
  /* Layout constants */
  --screen-gutter:24px;      /* p-6 on every screen */
  --screen-stack:24px;       /* space-y-6 between screen blocks */
  --control-height:56px;     /* h-14 primary CTA */
  --control-height-sm:48px;  /* h-12 intensity picker */
  --tap-min:44px;
}