/* Critical CSS — prevents FOUC by setting theme variables before React loads */
:root { --background: 0 0% 100%; --foreground: 222.2 84% 4.9%; }
.dark { --background: 222.2 84% 4.9%; --foreground: 210 40% 98%; }
body { margin: 0; background-color: hsl(var(--background)); color: hsl(var(--foreground)); font-family: Inter, system-ui, sans-serif; }
#root { min-height: 100vh; }