/* Color tokens — Vercel theme (the starter's DEFAULT_THEME).
   Monochrome, high-contrast: pure black primary on near-white surfaces.
   All values are the exact oklch() from the source theme. */
:root {
  /* Base surfaces & text */
  --background: oklch(0.99 0 0);
  --foreground: oklch(0 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0 0 0);
  --popover: oklch(0.99 0 0);
  --popover-foreground: oklch(0 0 0);

  /* Actions */
  --primary: oklch(0 0 0);
  --primary-foreground: oklch(1 0 0);
  --secondary: oklch(0.94 0 0);
  --secondary-foreground: oklch(0 0 0);
  --accent: oklch(0.94 0 0);
  --accent-foreground: oklch(0 0 0);

  /* Muted / subtle */
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.44 0 0);

  /* Status */
  --destructive: oklch(0.63 0.19 23.03);
  --destructive-foreground: oklch(1 0 0);

  /* Lines & focus */
  --border: oklch(0.92 0 0);
  --input: oklch(0.94 0 0);
  --ring: oklch(0 0 0);

  /* Data viz */
  --chart-1: oklch(0.81 0.17 75.35);   /* amber */
  --chart-2: oklch(0.55 0.22 264.53);  /* blue  */
  --chart-3: oklch(0.72 0 0);          /* gray  */
  --chart-4: oklch(0.92 0 0);          /* light gray */
  --chart-5: oklch(0.56 0 0);          /* mid gray */

  /* Sidebar surface */
  --sidebar: oklch(0.99 0 0);
  --sidebar-foreground: oklch(0 0 0);
  --sidebar-primary: oklch(0 0 0);
  --sidebar-primary-foreground: oklch(1 0 0);
  --sidebar-accent: oklch(0.94 0 0);
  --sidebar-accent-foreground: oklch(0 0 0);
  --sidebar-border: oklch(0.94 0 0);
  --sidebar-ring: oklch(0 0 0);
}

/* Dark mode — add class="dark" on a root element */
.dark {
  --background: oklch(0 0 0);
  --foreground: oklch(1 0 0);
  --card: oklch(0.14 0 0);
  --card-foreground: oklch(1 0 0);
  --popover: oklch(0.18 0 0);
  --popover-foreground: oklch(1 0 0);
  --primary: oklch(1 0 0);
  --primary-foreground: oklch(0 0 0);
  --secondary: oklch(0.25 0 0);
  --secondary-foreground: oklch(1 0 0);
  --accent: oklch(0.32 0 0);
  --accent-foreground: oklch(1 0 0);
  --muted: oklch(0.23 0 0);
  --muted-foreground: oklch(0.72 0 0);
  --destructive: oklch(0.69 0.2 23.91);
  --destructive-foreground: oklch(0 0 0);
  --border: oklch(0.26 0 0);
  --input: oklch(0.32 0 0);
  --ring: oklch(0.72 0 0);
  --chart-1: oklch(0.81 0.17 75.35);
  --chart-2: oklch(0.58 0.21 260.84);
  --chart-3: oklch(0.56 0 0);
  --chart-4: oklch(0.44 0 0);
  --chart-5: oklch(0.92 0 0);
  --sidebar: oklch(0.18 0 0);
  --sidebar-foreground: oklch(1 0 0);
  --sidebar-primary: oklch(1 0 0);
  --sidebar-primary-foreground: oklch(0 0 0);
  --sidebar-accent: oklch(0.32 0 0);
  --sidebar-accent-foreground: oklch(1 0 0);
  --sidebar-border: oklch(0.32 0 0);
  --sidebar-ring: oklch(0.72 0 0);
}