/*
  Design Brain — public site stylesheet.

  Every visual value below is copied verbatim from the Design Brain product
  design system, never invented here:
    - brand ramp, semantic colour mapping (light mode), type scale, radius,
      container width: design-brain/src/styles/theme.css @ e53a5af
    - neutral ramp: tailwindcss@4.3.2 theme.css default `neutral` palette,
      which the product resolves its neutral tokens to (it defines no override)
    - badge (pill, md, brand), link colour, focus ring: product components
      src/components/base/badges/badges.tsx, src/components/base/buttons/button.tsx
  To change a value, change the product token first, then mirror it here.

  Light theme only (the product's dark token block is not mirrored yet).
  No motion, no scripts, no external requests.
*/

@font-face {
  /* Inter 4.001 variable, latin subset — the exact file the product
     self-hosts through next/font. SIL OFL 1.1, see fonts/OFL.txt. */
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/fonts/inter-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC,
    U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212,
    U+2215, U+FEFF, U+FFFD;
}

:root {
  color-scheme: light;

  /* FONT FAMILY (theme.css --font-body / --font-display) */
  --font-body: "Inter", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  /* BRAND RAMP (theme.css, blue, read from Untitled UI Figma variables) */
  --color-brand-50: rgb(239 246 255);
  --color-brand-500: rgb(59 130 246);
  --color-brand-600: rgb(37 99 235);
  --color-brand-700: rgb(29 78 216);
  --color-brand-800: rgb(30 64 175);

  /* NEUTRAL RAMP (tailwindcss 4.3.2 default) */
  --color-neutral-50: oklch(98.5% 0 0);
  --color-neutral-200: oklch(92.2% 0 0);
  --color-neutral-600: oklch(43.9% 0 0);
  --color-neutral-700: oklch(37.1% 0 0);
  --color-neutral-900: oklch(20.5% 0 0);

  /* SEMANTIC (theme.css light mode) */
  --color-bg-primary: rgb(255 255 255);
  --color-bg-secondary: var(--color-neutral-50);
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-700);
  --color-text-tertiary: var(--color-neutral-600);
  --color-text-brand-secondary: var(--color-brand-700);
  --color-text-brand-secondary_hover: var(--color-brand-800);
  --color-border-secondary: var(--color-neutral-200);
  --color-focus-ring: var(--color-brand-500);
  --color-utility-brand-50: var(--color-brand-50);
  --color-utility-brand-700: var(--color-brand-700);

  /* TYPE SCALE (theme.css; --spacing = 0.25rem) */
  --text-xs: 0.75rem;
  --text-xs--line-height: 1.125rem;
  --text-sm: 0.875rem;
  --text-sm--line-height: 1.25rem;
  --text-md: 1rem;
  --text-md--line-height: 1.5rem;
  --text-lg: 1.125rem;
  --text-lg--line-height: 1.75rem;
  --text-xl: 1.25rem;
  --text-xl--line-height: 1.875rem;
  --text-display-xs: 1.5rem;
  --text-display-xs--line-height: 2rem;
  --text-display-sm: 1.875rem;
  --text-display-sm--line-height: 2.375rem;
  --text-display-md: 2.25rem;
  --text-display-md--line-height: 2.75rem;
  --text-display-md--letter-spacing: -0.72px;
  --text-display-lg: 3rem;
  --text-display-lg--line-height: 3.75rem;
  --text-display-lg--letter-spacing: -0.96px;
  --text-display-xl: 3.75rem;
  --text-display-xl--line-height: 4.5rem;
  --text-display-xl--letter-spacing: -1.2px;

  /* RADIUS, LAYOUT */
  --radius-sm: 0.25rem;
  --radius-full: 9999px;
  --max-width-container: 1280px;
  --spacing: 0.25rem;
}

/* ---------- base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-md);
  line-height: var(--text-md--line-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-kerning: normal;
  font-variant-ligatures: contextual;
}

h1,
h2,
p {
  margin: 0;
}

main {
  flex: 1 0 auto;
}

a {
  color: var(--color-text-brand-secondary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
  border-radius: var(--radius-sm);
  overflow-wrap: anywhere;
}

a:hover {
  color: var(--color-text-brand-secondary_hover);
}

/* Focus ring = product "Focus rings/focus-ring": 2px Brand/500, 2px offset */
a:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--max-width-container);
  margin-inline: auto;
  padding-inline: calc(var(--spacing) * 4);
}

/* ---------- header ---------- */

.site-header {
  padding-block: calc(var(--spacing) * 5);
  border-bottom: 1px solid var(--color-border-secondary);
}

.site-header__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--spacing) * 4);
}

.wordmark {
  font-size: var(--text-md);
  line-height: var(--text-md--line-height);
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
}

/* Badge: product <Badge type="pill-color" color="brand" size="md"> */
.badge {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  border-radius: var(--radius-full);
  padding: calc(var(--spacing) * 0.5) calc(var(--spacing) * 2.5);
  background: var(--color-utility-brand-50);
  color: var(--color-utility-brand-700);
  font-size: var(--text-sm);
  line-height: var(--text-sm--line-height);
  font-weight: 500;
}

/* ---------- hero ---------- */

.hero {
  padding-block: calc(var(--spacing) * 16) calc(var(--spacing) * 14);
}

.hero__title {
  max-width: 24ch;
  font-size: var(--text-display-sm);
  line-height: var(--text-display-sm--line-height);
  font-weight: 600;
  color: var(--color-text-primary);
  text-wrap: balance;
}

.hero__lead {
  max-width: 60ch;
  margin-top: calc(var(--spacing) * 6);
  font-size: var(--text-lg);
  line-height: var(--text-lg--line-height);
  color: var(--color-text-tertiary);
  text-wrap: pretty;
}

/* ---------- sections ---------- */

.section {
  border-top: 1px solid var(--color-border-secondary);
}

.section__grid {
  display: grid;
  gap: calc(var(--spacing) * 4);
  padding-block: calc(var(--spacing) * 10);
}

.section__title {
  font-size: var(--text-display-xs);
  line-height: var(--text-display-xs--line-height);
  font-weight: 600;
  color: var(--color-text-primary);
}

.section__body {
  max-width: 60ch;
  font-size: var(--text-lg);
  line-height: var(--text-lg--line-height);
  color: var(--color-text-tertiary);
}

.section__body p + p {
  margin-top: calc(var(--spacing) * 3);
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--color-border-secondary);
  padding-block: calc(var(--spacing) * 8);
  font-size: var(--text-sm);
  line-height: var(--text-sm--line-height);
  color: var(--color-text-tertiary);
}

/* ---------- responsive ----------
   Breakpoints: xs 600px (product token), md 768px, lg 1024px (Tailwind
   defaults the product uses). The hero title climbs the product display
   scale one token step at a time: sm → md → lg → xl. */

@media (max-width: 379.98px) {
  /* Badge size "sm" so the header row fits a 320px viewport. */
  .badge {
    padding: calc(var(--spacing) * 0.5) calc(var(--spacing) * 2);
    font-size: var(--text-xs);
    line-height: var(--text-xs--line-height);
  }
}

@media (min-width: 600px) {
  .container {
    padding-inline: calc(var(--spacing) * 8);
  }

  .hero__title {
    font-size: var(--text-display-md);
    line-height: var(--text-display-md--line-height);
    letter-spacing: var(--text-display-md--letter-spacing);
  }
}

@media (min-width: 768px) {
  .hero {
    padding-block: calc(var(--spacing) * 28) calc(var(--spacing) * 24);
  }

  .hero__title {
    font-size: var(--text-display-lg);
    line-height: var(--text-display-lg--line-height);
    letter-spacing: var(--text-display-lg--letter-spacing);
  }

  .hero__lead {
    margin-top: calc(var(--spacing) * 8);
    font-size: var(--text-xl);
    line-height: var(--text-xl--line-height);
  }

  .section__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
    gap: calc(var(--spacing) * 8);
    padding-block: calc(var(--spacing) * 16);
  }
}

@media (min-width: 1024px) {
  .hero__title {
    font-size: var(--text-display-xl);
    line-height: var(--text-display-xl--line-height);
    letter-spacing: var(--text-display-xl--letter-spacing);
  }
}