/* Design tokens — the single source of truth for colour, type and spacing.
   Nothing else in the stylesheet set should contain a raw hex value or a
   hard-coded pixel size that belongs here. */

:root {
  /* --- Brand palette --------------------------------------------------- */
  --color-blue: #2f80ed;
  --color-blue-hover: #1c6fdb;
  --color-blue-active: #1660c4;
  --color-blue-soft: rgba(47, 128, 237, 0.14);

  /* --- Neutrals --------------------------------------------------------- */
  --color-ink: #14181d;
  --color-ink-muted: #5f6b78;
  --color-ink-faint: #8b96a3;

  --color-surface: #ffffff;
  --color-surface-alt: #f1f3f6;
  --color-surface-sunken: #e7eaee;

  --color-dark: #0d1218;
  --color-dark-alt: #131a22;
  --color-dark-line: rgba(255, 255, 255, 0.09);
  --color-on-dark: #ffffff;
  --color-on-dark-muted: #b3bdc9;

  --color-border: #d8dde3;
  --color-danger: #c0392b;
  --color-success: #1e7e57;

  /* --- Typography ------------------------------------------------------- */
  --font-sans: "Helvetica Neue", Helvetica, Arial, "Liberation Sans",
    system-ui, -apple-system, sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 1rem;
  --text-md: 1.0625rem;
  --text-lg: 1.375rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.25rem;
  --text-3xl: 3rem;
  --text-4xl: 3.75rem;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-bold: 700;
  --weight-black: 800;

  --leading-tight: 1.05;
  --leading-snug: 1.25;
  --leading-normal: 1.6;

  --tracking-wide: 0.06em;
  --tracking-wider: 0.09em;

  /* --- Spacing scale ---------------------------------------------------- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 4rem;
  --space-10: 5rem;

  /* --- Layout ----------------------------------------------------------- */
  --container-max: 1180px;
  --container-pad: var(--space-5);
  --header-height: 84px;

  /* --- Shape and depth --------------------------------------------------- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-card: 0 18px 48px rgba(10, 18, 28, 0.16);
  --shadow-soft: 0 2px 10px rgba(10, 18, 28, 0.08);

  --transition-fast: 140ms ease;
  --transition-base: 220ms ease;

  --focus-ring: 3px solid var(--color-blue);
  --focus-offset: 2px;
}

@media (max-width: 720px) {
  :root {
    --text-3xl: 2.125rem;
    --text-4xl: 2.5rem;
    --text-2xl: 1.75rem;
    --header-height: 72px;
    --container-pad: var(--space-4);
  }
}