/* =====================================================================
 * LAYOUT: industry-hub
 *
 * Grammar: authority + navigation. Directory first (primary value),
 * then guides (topic-grouped), then news, then reference — ordered by
 * user intent frequency. Independence claim is visible, not buried.
 * ===================================================================== */

:root {
  /* ── Palette ── */
  --color-primary:        #3A6B35;
  --color-primary-hover:  #1e3a8a;
  --color-primary-text:   #ffffff;
  --color-secondary:      #5C8A3C;
  --color-accent:         #C8851A;
  --color-background:     #F9F6F1;
  --color-surface:        #FFFFFF;
  --color-text:           #1E1E1E;
  --color-text-muted:     #5E5E4E;
  --color-border:         #DDD8CC;
  --color-card-bg:        #ffffff;
  --color-header-bg:      #ffffff;
  --color-header-text:    #1e293b;
  --color-cta-bg:         #1e40af;
  --color-cta-text:       #ffffff;
  --color-footer-bg:      #0f172a;
  --color-footer-text:    rgba(255,255,255,0.75);
  --color-independence-bg:     #f0f9ff;
  --color-independence-border: #0284c7;
  --color-news-date:           #b91c1c;

  /* ── Typography ── */
  --font-body:        'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;
  --font-heading:     'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-size-base:   16px;
  --line-height-base: 1.7;

  /* ── Structure ── */
  --container-max:      1200px;
  --container-pad-x:    1.5rem;
  --section-pad-y:      3.5rem;
  --section-pad-y-sm:   2rem;
  --directory-min:      280px;
  --news-min:           260px;
  --radius:             0.375rem;
  --radius-sm:          0.25rem;
  --shadow-sm:          0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:          0 4px 10px rgba(0,0,0,0.06);
  --transition:         180ms ease;
  --card-pad:           1.5rem;
  --header-h:           64px;
  --cat-strip-h:        44px;

  
}

/* ── Base reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
main { flex: 1; }
img { max-width: 100%; height: auto; display: block; }

/* ── Colour Inheritance Model ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--section-heading, var(--color-primary));
  margin: 0 0 0.75rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.005em;
}
h1 { font-size: clamp(2rem, 3.5vw, 2.5rem); line-height: 1.15; }
h2 { font-size: 1.625rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.0625rem; }

p, li, blockquote { color: var(--section-text, inherit); margin: 0 0 1rem; }
blockquote {
  font-style: italic;
  border-left: 3px solid var(--color-primary);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  color: var(--section-text-muted, var(--color-text-muted));
}
a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
a:hover {
  color: var(--color-primary-hover);
  border-bottom-color: currentColor;
}

/* ── Layout primitives ── */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad-x);
  width: 100%;
}
.section { padding-block: var(--section-pad-y); }
.section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary);
}
.section__head h2 { margin: 0; font-size: 1.375rem; }
.section__head .view-all {
  font-size: 0.875rem;
  font-family: var(--font-body);
  font-weight: 600;
  border-bottom: none;
}

/* ── Site header ── */
.site-header {
  background: var(--color-header-bg);
  color: var(--color-header-text);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.site-header__main {
  height: var(--header-h);
  display: flex;
  align-items: center;
}
.header-container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 0 var(--container-pad-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  width: 100%;
}
.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: none;
}
.logo-img { max-height: 44px; width: auto; }

.main-nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  color: var(--color-header-text);
  font-weight: 600;
  font-size: 0.9375rem;
  border-bottom: none;
  padding: 0.5rem 0;
}
.main-nav a:hover,
.main-nav a.active { color: var(--color-primary); }

/* Category strip — below main header */
.category-strip {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  height: var(--cat-strip-h);
  display: flex;
  align-items: center;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.category-strip::-webkit-scrollbar { display: none; }
.category-strip ul {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 0 var(--container-pad-x);
  display: flex;
  gap: 1.5rem;
  list-style: none;
  white-space: nowrap;
}
.category-strip a {
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: none;
  padding: 0.25rem 0;
}
.category-strip a:hover,
.category-strip a.active { color: var(--color-primary); }

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  min-width: 44px;
  min-height: 44px;
  color: var(--color-header-text);
}
.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
}

/* ── Hero — positioning statement, prominent search/browse ── */
.hero-section {
  padding-block: 4rem;
  background: var(--color-surface);
  text-align: center;
}
.hero-section .container { max-width: 820px; }
.hero-section h1 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 2.75rem);
}
.hero-subtitle, .hero-section .lead {
  font-size: 1.125rem;
  color: var(--section-text-muted, var(--color-text-muted));
  max-width: 640px;
  margin: 0 auto 1.75rem;
  line-height: 1.55;
}
.hero-cta-group {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Independence / "about this site" callout banner ── */
.independence-banner {
  background: var(--color-independence-bg);
  border-left: 4px solid var(--color-independence-border);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.25rem;
  margin: 2rem auto;
  max-width: var(--container-max);
  margin-inline: auto;
  font-size: 0.9375rem;
}
.independence-banner__title {
  font-weight: 700;
  margin-bottom: 0.25rem;
  font-family: var(--font-heading);
  font-size: 1rem;
}
.independence-banner p { margin: 0; color: var(--color-text); }

/* ── Directory listing — the primary content element ── */
.directory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--directory-min), 1fr));
  gap: 1rem;
}
.directory-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--card-pad);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.directory-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.directory-card__name {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
  line-height: 1.3;
}
.directory-card__name a {
  color: var(--color-text);
  border-bottom: none;
}
.directory-card__name a:hover { color: var(--color-primary); }
.directory-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--section-text-muted, var(--color-text-muted));
  margin-bottom: 0.75rem;
}
.directory-card__tag {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}
.directory-card__description {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--section-text-muted, var(--color-text-muted));
  margin: 0 0 0.75rem;
}
.directory-card__details-link {
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  border-bottom: none;
}
.directory-card__details-link:hover { text-decoration: underline; }

/* Filter bar above directory (simpler than comparison-aggregator's) */
.directory-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1.5rem;
  padding: 0.875rem 1rem;
  background: var(--color-surface);
  border-radius: var(--radius);
}
.directory-filter label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--section-text-muted, var(--color-text-muted));
}
.directory-filter select {
  padding: 0.375rem 0.625rem;
  font: inherit;
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background);
  min-height: 36px;
}

/* ── Guide index — topic-organised, NOT chronological ── */
.guide-topics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 1.5rem;
}
.guide-topic {
  background: var(--color-card-bg);
  padding: var(--card-pad);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.guide-topic__name {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary);
}
.guide-topic ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.guide-topic li {
  padding: 0.375rem 0;
  border-bottom: 1px solid var(--color-border);
}
.guide-topic li:last-child { border-bottom: none; }
.guide-topic a {
  display: block;
  font-size: 0.9375rem;
  line-height: 1.4;
  padding: 0.25rem 0;
  border-bottom: none;
  min-height: 32px;
}
.guide-topic__description {
  display: block;
  font-size: 0.8125rem;
  color: var(--section-text-muted, var(--color-text-muted));
  font-weight: 400;
  margin-top: 0.125rem;
}

/* ── News section — date-prominent, compact ── */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--news-min), 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.news-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.125rem 1.25rem;
  transition: border-color var(--transition);
}
.news-card:hover { border-color: var(--color-primary); }
.news-card__date {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-news-date);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}
.news-card__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.375rem;
}
.news-card__title a { color: var(--color-text); border-bottom: none; }
.news-card__title a:hover { color: var(--color-primary); }
.news-card__excerpt {
  font-size: 0.875rem;
  color: var(--section-text-muted, var(--color-text-muted));
  margin: 0;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Glossary / reference list ── */
.glossary-section .container { max-width: 920px; }
.glossary-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.glossary-list > li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}
.glossary-list > li:last-child { border-bottom: none; }
.glossary-term {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  margin-bottom: 0.25rem;
  display: block;
}
.glossary-definition {
  margin: 0;
  color: var(--section-text-muted, var(--color-text-muted));
  font-size: 0.9375rem;
  line-height: 1.55;
}

/* Alphabetic jumplist option */
.glossary-jumplist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-bottom: 1.5rem;
}
.glossary-jumplist a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  min-width: 32px;
  min-height: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-border);
}
.glossary-jumplist a:hover {
  background: var(--color-primary);
  color: var(--color-primary-text);
  border-color: var(--color-primary);
}

/* ── Renderer-managed surface sections ──
 *
 * TEMPORARY RENDERER COUPLING: Phase 4.5 pending. */
.features-section,
.services-section,
.differentiators-section,
.about-section,
.faq-section { background: var(--color-surface); }

/* Features — when present, simple three-col list */
.features-grid,
.services-grid,
.differentiators-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.feature-card,
.service-card,
.differentiator-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--card-pad);
}

/* About / Contact / FAQ */
.about-section .container,
.contact-section .container { max-width: 820px; }
.faq-section .container { max-width: 820px; }

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}
.faq-item summary {
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 700;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  min-height: 44px;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-weight: 400; font-size: 1.25rem; color: var(--color-primary); }
.faq-item[open] summary::after { content: "−"; }

/* CTA / testimonials */
.call-to-action-section { text-align: center; padding-block: 2.5rem; }
.testimonials-section { padding-block: 2.5rem; }
.testimonials-section .testimonial {
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.125rem;
  line-height: 1.4;
}

/* Forms */
.form-field { margin-bottom: 1rem; }
.form-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.375rem;
  font-size: 0.875rem;
}
.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font: inherit;
  font-size: 0.9375rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background);
  color: var(--color-text);
  min-height: 44px;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font: inherit;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
  border-bottom: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.btn:hover { text-decoration: none; border-bottom: none; }
.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-text);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-primary-text);
}
.btn-secondary {
  background: var(--color-card-bg);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-primary-text);
}

/* ── Site footer — dark, with heavy disclaimer block ── */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 3.5rem 0 0;
  margin-top: auto;
}
.footer-container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 0 var(--container-pad-x);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
}
.site-footer h3, .site-footer h4 {
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  margin-bottom: 0.75rem;
}
.site-footer a { color: var(--color-footer-text); border-bottom: none; }
.site-footer a:hover { color: #ffffff; text-decoration: underline; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 0.5rem; font-size: 0.9rem; }

/* The defining feature: prominent heavy disclaimer block */
.footer-disclaimer {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 2rem var(--container-pad-x);
  margin-top: 2.5rem;
  border-top: 1px solid rgba(255,255,255,0.15);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.65);
}
.footer-disclaimer__title {
  color: #ffffff;
  font-weight: 700;
  font-family: var(--font-heading);
  margin-bottom: 0.75rem;
  font-size: 1rem;
}
.footer-disclaimer p { margin: 0 0 0.75rem; }
.footer-disclaimer p:last-child { margin-bottom: 0; }

.footer-bottom {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 1.5rem var(--container-pad-x);
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.5);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .guide-topics { grid-template-columns: repeat(2, 1fr); }
  .footer-container { grid-template-columns: repeat(2, 1fr); }
  .features-grid,
  .services-grid,
  .differentiators-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding-block: var(--section-pad-y-sm); }
  .hero-section { padding-block: 2.5rem; }
  .directory-grid,
  .guide-topics,
  .news-grid,
  .features-grid,
  .services-grid,
  .differentiators-grid { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; }
  .main-nav { display: none; }
  .main-nav.is-open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-header-bg); border-bottom: 1px solid var(--color-border); padding: 0.75rem var(--container-pad-x); }
  .main-nav.is-open ul { flex-direction: column; gap: 0; }
  .mobile-menu-toggle { display: inline-flex; flex-direction: column; justify-content: center; align-items: center; }
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    transform: none !important;
  }
}


/* === Component-specific styles === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp 0.6s ease forwards; }

/* renderer-enforced compatibility aliases (component vocabulary bridge) */
:root {
  --border-radius: var(--radius, 8px);
  --shadow: var(--shadow-md, 0 2px 12px rgba(0, 0, 0, 0.15));
  --spacing-section: var(--section-pad-y, 4rem);
  --container-max-width: var(--container-max, 1200px);
  --primary-color: var(--color-primary);
  --secondary-color: var(--color-secondary);
  --accent-color: var(--color-accent);
  --color-heading: var(--color-text);
  --color-white: #ffffff;
  --color-error: #d64545;
  --hero-ink: var(--color-text);
}


/* renderer-owned legible-ink companions. Opt in with
   var(--color-primary-ink, var(--color-primary)) — never bare, so a
   stylesheet rendered before this block renders byte-identically. */
:root {
  --color-primary-ink: #3A6B35;
  --color-accent-ink: #8d5e12;
  --color-accent-text: #1E1E1E;
}


/* css-patch-agent 2026-09-05: contrast */
SPAN.mech-flow__eyebrow { color: #7a4a0a; }

/* css-patch-agent 2026-09-05: contrast */
/* css-patch-agent: contrast fix for mech-flow__branch-label */
SPAN.mech-flow__branch-label { color: #7a4e00; }