/*
 * A&CO Growth Engine — foundation stylesheet.
 *
 * The single, Tailwind-free styling source shared by the server-rendered public
 * pages (src/server/marketing/public-pages.ts) and, via a <link> in index.html,
 * the client shell. Organised as cascade layers so tokens/reset/base stay
 * distinct from feature composition, per ADR 0005. New UI adds CSS Modules that
 * consume the --ge-* custom properties defined here; this file never grows into
 * a component-rule dump — only shared primitives live here.
 *
 * No Tailwind utilities, no @apply, no @tailwind. Legacy screens keep their own
 * styles.css and are unaffected.
 */

@layer ge-tokens, ge-reset, ge-base, ge-components;

/* ---------------------------------------------------------------- tokens -- */
@layer ge-tokens {
  :root {
    --ge-white: #ffffff;
    --ge-wash: #f6f5f0;
    --ge-line: #e4e2da;
    --ge-line-soft: #efeee8;
    --ge-ink: #1b1b19;
    --ge-ink-70: #57564f;
    --ge-ink-45: #86847c;
    --ge-ink-25: #b3b1a8;
    --ge-yellow: #ffe357;
    --ge-yellow-strong: #f5d949;
    --ge-ochre: #8a6a00;

    --ge-font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;

    --ge-radius-sm: 0.375rem;
    --ge-radius-md: 0.5rem;

    --ge-space-2: 0.5rem;
    --ge-space-3: 0.75rem;
    --ge-space-4: 1rem;
    --ge-space-6: 1.5rem;
    --ge-space-8: 2rem;
    --ge-space-12: 3rem;

    --ge-shadow-sm: 0 1px 3px rgba(27, 27, 25, 0.05);

    --ge-focus-ring: 0 0 0 2px var(--ge-white), 0 0 0 4px var(--ge-yellow);
    --ge-measure: 42rem;
  }
}

/* ----------------------------------------------------------------- reset -- */
@layer ge-reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  .ge-page,
  .ge-page * {
    margin: 0;
  }

  .ge-page img {
    display: block;
    max-width: 100%;
    height: auto;
  }
}

/* ------------------------------------------------------------------ base -- */
@layer ge-base {
  .ge-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--ge-wash);
    color: var(--ge-ink);
    font-family: var(--ge-font-sans);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }

  .ge-page h1,
  .ge-page h2,
  .ge-page h3 {
    color: var(--ge-ink);
    line-height: 1.15;
    font-weight: 600;
    letter-spacing: -0.01em;
  }

  .ge-page a {
    color: inherit;
  }

  .ge-page :focus-visible {
    outline: none;
    border-radius: var(--ge-radius-sm);
    box-shadow: var(--ge-focus-ring);
  }
}

/* ------------------------------------------------------------ components -- */
@layer ge-components {
  .ge-container {
    width: 100%;
    max-width: var(--ge-measure);
    margin-inline: auto;
    padding-inline: var(--ge-space-6);
  }

  .ge-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--ge-space-4);
    padding-block: var(--ge-space-6);
  }

  .ge-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--ge-space-3);
    color: var(--ge-ink);
    text-decoration: none;
  }

  .ge-brand-mark {
    height: 22px;
    width: auto;
  }

  .ge-nav {
    display: flex;
    align-items: center;
    gap: var(--ge-space-6);
    font-size: 0.9rem;
  }

  .ge-main {
    flex: 1;
    padding-block: var(--ge-space-12) var(--ge-space-8);
  }

  .ge-hero-title {
    font-size: clamp(2rem, 5vw, 3.25rem);
    max-width: 18ch;
  }

  .ge-hero-lede {
    margin-top: var(--ge-space-6);
    max-width: 46ch;
    font-size: 1.1rem;
    color: var(--ge-ink-70);
  }

  .ge-actions {
    margin-top: var(--ge-space-8);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--ge-space-4);
  }

  /* Shared control appearance. The CSS-Module CtaButton mirrors this contract
     for in-app use; the public pages render the same semantics as markup. */
  .ge-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--ge-space-2);
    min-height: 2.75rem;
    padding-inline: var(--ge-space-6);
    border: 1px solid transparent;
    border-radius: var(--ge-radius-md);
    font-weight: 600;
    text-decoration: none;
    transition:
      background-color 150ms ease,
      border-color 150ms ease;
  }

  .ge-cta--primary {
    background: var(--ge-yellow);
    color: var(--ge-ink);
  }

  .ge-cta--primary:hover {
    background: var(--ge-yellow-strong);
  }

  .ge-cta--secondary {
    background: var(--ge-white);
    border-color: var(--ge-line);
    color: var(--ge-ink-70);
  }

  .ge-cta--secondary:hover {
    background: var(--ge-wash);
    color: var(--ge-ink);
  }

  .ge-link {
    color: var(--ge-ink-70);
    text-decoration: underline;
    text-underline-offset: 4px;
  }

  .ge-link:hover {
    color: var(--ge-ink);
  }

  .ge-footer {
    padding-block: var(--ge-space-8);
    border-top: 1px solid var(--ge-line);
    color: var(--ge-ink-45);
    font-size: 0.85rem;
  }

  .ge-footer-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--ge-space-4);
  }

  .ge-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ge-space-6);
  }

  /* Legal reading surface (Privacy, Terms). */
  .ge-legal-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
  }

  .ge-legal-updated {
    margin-top: var(--ge-space-2);
    color: var(--ge-ink-45);
    font-size: 0.85rem;
  }

  .ge-legal-section {
    margin-top: var(--ge-space-8);
  }

  .ge-legal-section h2 {
    font-size: 1.15rem;
    margin-bottom: var(--ge-space-2);
  }

  .ge-legal-section p {
    color: var(--ge-ink-70);
  }

  @media (max-width: 640px) {
    .ge-header {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--ge-space-3);
    }

    .ge-actions {
      flex-direction: column;
      align-items: stretch;
    }

    .ge-cta {
      width: 100%;
    }
  }
}