/* ==========================================================================
   Agentic AI Automation — design system
   --------------------------------------------------------------------------
   Replaces the previous dark/neon theme. Design rules this file enforces:

   - One accent colour, used sparingly. No gradient text, no glow, no neon.
   - Light ground. Ink on paper, not a dashboard.
   - Type carries the hierarchy; boxes and shadows do not.
   - Every colour pair below meets WCAG AA (4.5:1) on its stated background.
   - Motion is opt-in and respects prefers-reduced-motion.

   Layer order matters: tokens -> reset -> primitives -> components.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Ground. Warm off-white rather than pure #fff — less glare, prints better. */
  --paper:        #fbfaf8;
  --paper-sunk:   #f4f2ee;
  --paper-raised: #ffffff;

  /* Ink. Not pure black: #16161a on --paper is 15.8:1, plenty, and softer. */
  --ink:          #16161a;
  --ink-soft:     #3f4149;   /* 9.7:1  — body copy */
  --ink-muted:    #63656e;   /* 5.9:1  — captions, meta */
  --ink-faint:    #8a8c95;   /* 3.4:1  — decorative only, never body text */

  /* One accent. Deep ink-blue: authoritative, not a startup gradient. */
  --accent:       #1a3d6d;
  --accent-hover: #122c50;
  --accent-wash:  #eef2f8;   /* accent at ~6% — section tints, callouts */
  --accent-line:  #c9d5e6;

  /* Semantic. Used only for the score meter and form validation. */
  --pass:         #1d6b45;
  --warn:         #8a5a00;
  --fail:         #a03028;

  --rule:         #e3e0da;   /* hairlines */
  --rule-strong:  #cbc7bf;

  /* Type. A serif for display gives editorial weight a geometric sans can't.
     Both are variable fonts, subset to latin, self-hosted — see fonts.css. */
  --font-display: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    ui-monospace, 'SF Mono', 'Cascadia Mono', Menlo, monospace;

  /* Modular scale, 1.25 ratio, fluid between 380px and 1240px viewports. */
  --step--1: clamp(0.833rem, 0.80rem + 0.15vw, 0.889rem);
  --step-0:  clamp(1.000rem, 0.96rem + 0.20vw, 1.125rem);
  --step-1:  clamp(1.200rem, 1.12rem + 0.40vw, 1.406rem);
  --step-2:  clamp(1.440rem, 1.30rem + 0.70vw, 1.758rem);
  --step-3:  clamp(1.728rem, 1.50rem + 1.14vw, 2.197rem);
  --step-4:  clamp(2.074rem, 1.72rem + 1.77vw, 2.747rem);
  --step-5:  clamp(2.488rem, 1.96rem + 2.64vw, 3.433rem);

  /* Space. 4px base, named by role not size, so intent survives refactors. */
  --space-2xs: 0.25rem;
  --space-xs:  0.5rem;
  --space-sm:  0.75rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  --section-pad: clamp(3.5rem, 7vw, 6.5rem);
  --measure:     68ch;      /* readable line length ceiling */
  --container:   1140px;
  --container-narrow: 720px;
  --gutter:      clamp(1.25rem, 4vw, 2.5rem);

  /* Restraint: 2px radius, one shadow, one easing. */
  --radius:      2px;
  --radius-lg:   4px;
  --shadow:      0 1px 2px rgba(22, 22, 26, 0.06),
                 0 4px 12px rgba(22, 22, 26, 0.04);
  --ease:        cubic-bezier(0.2, 0, 0.13, 1);
  --nav-h:       68px;
}

/* --------------------------------------------------------------------------
   2. Reset
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--nav-h) + var(--space-lg));
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink-soft);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }

/* Visible focus everywhere. Never remove without replacing. */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius);
}

::selection { background: var(--accent); color: var(--paper-raised); }

/* --------------------------------------------------------------------------
   3. Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;          /* serif display reads heavy at 600+ */
  line-height: 1.15;
  letter-spacing: -0.011em;
  color: var(--ink);
  text-wrap: balance;
}

h1 { font-size: var(--step-5); line-height: 1.08; }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }

h2 + p, h3 + p { margin-top: var(--space-sm); }

p { max-width: var(--measure); text-wrap: pretty; }
p + p { margin-top: var(--space-md); }

a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-hover); }

strong { font-weight: 600; color: var(--ink); }
small  { font-size: var(--step--1); }

.lede {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 56ch;
}

/* Section eyebrow. Replaces the old pill-shaped gradient badges. */
.eyebrow {
  display: block;
  font-family: var(--font-body);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-sm);
}

.mono { font-family: var(--font-mono); font-size: 0.92em; }

/* --------------------------------------------------------------------------
   4. Layout primitives
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container-narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--section-pad); }
.section-tint { background: var(--paper-sunk); }
.section-rule { border-top: 1px solid var(--rule); }

/* Stack: vertical rhythm without margin collapse surprises. */
.stack > * + * { margin-top: var(--space-md); }
.stack-lg > * + * { margin-top: var(--space-lg); }
.stack-xl > * + * { margin-top: var(--space-xl); }

/* Auto-fitting grid. minmax floor keeps cards from collapsing to slivers. */
.grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr)); }

.section-head { max-width: 62ch; margin-bottom: var(--space-xl); }

/* Skip link — required by spec 01 §10. Visible only on keyboard focus. */
.skip-link {
  position: absolute;
  top: var(--space-xs);
  left: var(--space-xs);
  z-index: 100;
  padding: var(--space-xs) var(--space-md);
  background: var(--ink);
  color: var(--paper-raised);
  border-radius: var(--radius);
  transform: translateY(-200%);
}
.skip-link:focus { transform: translateY(0); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.7rem 1.4rem;
  font-family: var(--font-body);
  font-size: var(--step-0);
  font-weight: 500;
  line-height: 1.2;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  transition: background-color 0.15s var(--ease), border-color 0.15s var(--ease),
              color 0.15s var(--ease);
}

.btn-primary {
  background: var(--accent);
  color: var(--paper-raised);
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--paper-raised); }

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-strong);
}
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); background: transparent; }

/* Text link that behaves like a button target. */
.btn-quiet {
  padding: 0;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.btn-sm { padding: 0.45rem 0.9rem; font-size: var(--step--1); }

.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-sm); }

/* --------------------------------------------------------------------------
   6. Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 248, 0.92);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--rule);
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  min-height: var(--nav-h);
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.nav-logo { margin-right: auto; display: flex; align-items: center; }
.nav-logo img { height: 30px; width: auto; }

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: var(--step--1);
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
  padding-block: var(--space-xs);
  border-bottom: 2px solid transparent;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); border-bottom-color: var(--accent); }

.nav-actions { display: flex; align-items: center; gap: var(--space-sm); }

.nav-toggle {
  display: none;
  padding: var(--space-xs);
  color: var(--ink);
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-actions .btn-secondary { display: none; }

  .nav-links.is-open {
    display: flex;
    position: absolute;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm) var(--gutter) var(--space-lg);
    background: var(--paper-raised);
    border-bottom: 1px solid var(--rule);
  }
  .nav-links.is-open .nav-link {
    display: block;
    padding-block: var(--space-sm);
    border-bottom: 1px solid var(--rule);
  }
}

/* --------------------------------------------------------------------------
   7. Hero
   -------------------------------------------------------------------------- */
.hero { padding-block: clamp(3rem, 8vw, 6rem) var(--section-pad); }

.hero-inner { max-width: 46ch; }
.hero h1 { margin-bottom: var(--space-lg); }
.hero .lede { margin-bottom: var(--space-xl); }

/* Proof strip under the hero. Real numbers only — if a figure has no source,
   it does not belong here. */
.proof-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--rule);
}

.proof-item { max-width: 22ch; }
.proof-figure {
  display: block;
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.1;
}
.proof-label {
  display: block;
  margin-top: var(--space-2xs);
  font-size: var(--step--1);
  color: var(--ink-muted);
}
.proof-source {
  display: block;
  margin-top: var(--space-2xs);
  font-size: var(--step--1);
  color: var(--ink-faint);
}

/* --------------------------------------------------------------------------
   8. Cards
   -------------------------------------------------------------------------- */
.card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
}

.card h3 { font-size: var(--step-1); margin-bottom: var(--space-xs); }
.card p  { font-size: var(--step--1); color: var(--ink-muted); }
.card-link { margin-top: auto; padding-top: var(--space-md); font-size: var(--step--1); }

/* Whole-card click target without nesting interactive elements. */
.card-linked { position: relative; transition: border-color 0.15s var(--ease); }
.card-linked:hover { border-color: var(--rule-strong); }
.card-linked a::after { content: ''; position: absolute; inset: 0; }

/* Numbered list of steps. Replaces the old animated timeline. */
.steps { counter-reset: step; list-style: none; padding: 0; }
.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: var(--space-md);
  padding-block: var(--space-lg);
  border-top: 1px solid var(--rule);
}
.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--ink-faint);
  padding-top: 0.25em;
}
.step h3 { font-size: var(--step-1); margin-bottom: var(--space-2xs); }
.step p  { font-size: var(--step-0); }

/* --------------------------------------------------------------------------
   9. Case study / testimonial
   -------------------------------------------------------------------------- */
.quote {
  max-width: var(--measure);
  padding-left: var(--space-lg);
  border-left: 2px solid var(--accent-line);
}
.quote blockquote {
  font-family: var(--font-display);
  font-size: var(--step-2);
  line-height: 1.35;
  color: var(--ink);
}
.quote figcaption {
  margin-top: var(--space-md);
  font-size: var(--step--1);
  color: var(--ink-muted);
}
.quote cite { font-style: normal; font-weight: 600; color: var(--ink); }

/* Result table beats a row of animated counters — it is scannable and citable. */
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--step--1);
}
.result-table caption {
  text-align: left;
  font-size: var(--step--1);
  color: var(--ink-muted);
  padding-bottom: var(--space-sm);
}
.result-table th,
.result-table td {
  padding: var(--space-sm) var(--space-md) var(--space-sm) 0;
  text-align: left;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.result-table th { font-weight: 600; color: var(--ink); }
.result-table td.numeric { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

.table-scroll { overflow-x: auto; }

/* --------------------------------------------------------------------------
   10. Breadcrumbs — spec 01 §8
   -------------------------------------------------------------------------- */
.breadcrumbs { padding-block: var(--space-md); font-size: var(--step--1); }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: var(--space-xs); list-style: none; padding: 0; }
.breadcrumbs li { display: flex; gap: var(--space-xs); color: var(--ink-muted); }
.breadcrumbs a { color: var(--ink-muted); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs [aria-current="page"] { color: var(--ink); }

/* --------------------------------------------------------------------------
   11. FAQ
   -------------------------------------------------------------------------- */
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-md);
  padding-block: var(--space-md);
  font-family: var(--font-display);
  font-size: var(--step-1);
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-family: var(--font-mono); color: var(--ink-faint); }
.faq-item[open] summary::after { content: '\2212'; }
.faq-item > div { padding-bottom: var(--space-md); }

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
/* Dark footer. The ground is sampled from the brand wordmark itself
   (rgb(1,10,25)), so logo-wordmark-dark-v3.png sits on it with no visible
   edge — the artwork's own background and the footer are the same colour.
   It also gives the light page a deliberate close instead of fading out.

   Contrast on this ground: #e8ecf4 body text is 14.9:1, #9aa6bd muted is
   6.4:1, #7fc4ff links are 8.1:1. All well past AA. */
.site-footer {
  --footer-ink:       #e8ecf4;
  --footer-ink-muted: #9aa6bd;
  --footer-link:      #7fc4ff;
  --footer-rule:      rgba(255, 255, 255, 0.12);

  margin-top: var(--space-3xl);
  padding-block: var(--space-2xl) var(--space-xl);
  background: #010a19;
  color: var(--footer-ink);
  font-size: var(--step--1);
}

.site-footer p { color: var(--footer-ink-muted); }
.site-footer a { color: var(--footer-link); }
.site-footer a:hover { color: #ffffff; }

.site-footer .footer-col-title { color: var(--footer-ink); }
.site-footer .footer-links a { color: var(--footer-ink-muted); }
.site-footer .footer-links a:hover { color: #ffffff; }
.site-footer .social-link { color: var(--footer-ink-muted); }
.site-footer .social-link:hover { color: #ffffff; }
.site-footer .footer-bottom {
  border-top-color: var(--footer-rule);
  color: var(--footer-ink-muted);
}

/* The wordmark is 762x251 and carries its own dark ground, so it needs no
   padding or panel — it blends straight into the footer. */
.footer-wordmark { width: 200px; height: auto; margin-bottom: var(--space-md); }

.footer-grid {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
}
.footer-brand { max-width: 32ch; }
.footer-brand img { height: 28px; width: auto; margin-bottom: var(--space-md); }

.footer-col-title {
  font-family: var(--font-body);
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-md);
}

.footer-links { list-style: none; padding: 0; }
.footer-links li + li { margin-top: var(--space-xs); }
.footer-links a { color: var(--ink-soft); text-decoration: none; }
.footer-links a:hover { color: var(--accent); text-decoration: underline; }

.footer-socials { display: flex; flex-wrap: wrap; gap: var(--space-md); margin-top: var(--space-md); }
.social-link { color: var(--ink-muted); }
.social-link:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--rule);
  color: var(--ink-muted);
}

/* --------------------------------------------------------------------------
   13. Prose — blog post body, rendered from WordPress/markdown
   -------------------------------------------------------------------------- */
.prose { max-width: var(--measure); }
.prose > * + * { margin-top: var(--space-md); }
.prose h2 { font-size: var(--step-3); margin-top: var(--space-xl); }
.prose h3 { font-size: var(--step-2); margin-top: var(--space-lg); }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li + li { margin-top: var(--space-xs); }
.prose blockquote {
  padding-left: var(--space-lg);
  border-left: 2px solid var(--accent-line);
  color: var(--ink-muted);
}
.prose img { border-radius: var(--radius-lg); margin-block: var(--space-lg); }
.prose figcaption { font-size: var(--step--1); color: var(--ink-muted); margin-top: var(--space-xs); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.15em 0.35em;
  background: var(--paper-sunk);
  border-radius: var(--radius);
}
.prose pre {
  padding: var(--space-md);
  background: var(--paper-sunk);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}
.prose pre code { padding: 0; background: none; }

/* Legal pages keep their original section markup; this gives it rhythm. */
.legal-body .legal-section + .legal-section { margin-top: var(--space-xl); }
.legal-body .legal-section h2 { font-size: var(--step-2); margin-bottom: var(--space-sm); }
.legal-body .legal-section h3 { font-size: var(--step-1); margin-top: var(--space-lg); }
.legal-body .legal-section ul { padding-left: 1.4em; margin-top: var(--space-sm); }
.legal-body .legal-section li + li { margin-top: var(--space-xs); }

/* --------------------------------------------------------------------------
   14. Print — case studies get printed and forwarded internally
   -------------------------------------------------------------------------- */
@media print {
  .site-header, .site-footer, .btn, .breadcrumbs { display: none; }
  body { background: #fff; color: #000; font-size: 11pt; }
  a::after { content: ' (' attr(href) ')'; font-size: 9pt; color: #555; }
}