/* =========================================================
   FabXE — assets/css/styles.css
   Master stylesheet (compiled from Tailwind + custom rules)
   
   To recompile: npx tailwindcss -i ./src/input.css -o ./assets/css/styles.css --minify
   For quick test: replace the Tailwind CDN line in HTML <head>.
   ========================================================= */

/* ---------------------------------------------------------
   1. GOOGLE FONTS — loaded via <link> in HTML for performance
   --------------------------------------------------------- */

/* ---------------------------------------------------------
   2. CSS CUSTOM PROPERTIES (Design Tokens)
   Edit these to change the entire site's color theme.
   --------------------------------------------------------- */
:root {
  /* Brand Red */
  --color-primary:        #CD2129;
  --color-primary-dark:   #A81A20;
  --color-primary-deepest:#7A1217;
  --color-primary-tint:   #FBEBEC;

  /* Text */
  --color-ink:            #1A1A1A;
  --color-ink-muted:      #5C6670;

  /* Backgrounds */
  --color-surface:        #FFFFFF;
  --color-surface-alt:    #F6F7F8;
  --color-surface-dark:   #16181B;

  /* Border */
  --color-border:         #E3E5E8;

  /* Typography */
  --font-heading:         'Manrope', 'Inter', system-ui, sans-serif;
  --font-body:            'Inter', system-ui, sans-serif;
  --font-size-body:       17px;
  --line-height-body:     1.75;

  /* Spacing */
  --section-py:           5rem;
  --container-px:         1.5rem;

  /* Transitions */
  --transition-base:      all 0.2s ease;
  --transition-slow:      all 0.35s ease;

  /* Shadows */
  --shadow-card:          0 2px 16px rgba(0,0,0,0.07);
  --shadow-card-hover:    0 8px 32px rgba(0,0,0,0.12);
  --shadow-header:        0 2px 8px rgba(0,0,0,0.08);
}

/* Dark mode overrides */
.dark {
  --color-ink:            #F0F0F0;
  --color-ink-muted:      #9BA5AE;
  --color-surface:        #16181B;
  --color-surface-alt:    #1E2124;
  --color-surface-dark:   #0D0F11;
  --color-border:         #2C2F33;
  --shadow-card:          0 2px 16px rgba(0,0,0,0.3);
  --shadow-card-hover:    0 8px 32px rgba(0,0,0,0.45);
}

/* ---------------------------------------------------------
   3. RESET / BASE STYLES
   --------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-body);
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-body);
  color: var(--color-ink);
  background-color: var(--color-surface);
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

/* Skip-to-content link for accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  z-index: 9999;
  border-radius: 0 0 8px 0;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* Visible focus states */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------------------------------------------------------
   4. LAYOUT UTILITIES
   --------------------------------------------------------- */
.container-site {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

.section-py { padding-top: var(--section-py); padding-bottom: var(--section-py); }

/* ---------------------------------------------------------
   5. TYPOGRAPHY SYSTEM
   --------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-ink);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p { margin-bottom: 1.25rem; }
p:last-child { margin-bottom: 0; }

.text-muted { color: var(--color-ink-muted); }

/* Eyebrow label above headings */
.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

/* ---------------------------------------------------------
   6. BUTTONS
   --------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-base);
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  min-height: 48px; /* accessibility tap target */
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(205,33,41,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.btn-white:hover {
  background: var(--color-primary-tint);
  color: var(--color-primary-dark);
}

.btn-outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  min-height: 40px;
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.0625rem;
  min-height: 56px;
}

/* ---------------------------------------------------------
   7. HEADER
   --------------------------------------------------------- */
#site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-header);
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1rem;
}

.header-logo img { height: 40px; width: auto; }

/* Desktop nav */
.nav-desktop { display: none; align-items: center; gap: 0.25rem; }
@media (min-width: 1024px) { .nav-desktop { display: flex; } }

.nav-link {
  padding: 0.5rem 0.875rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink);
  border-radius: 6px;
  transition: var(--transition-base);
  position: relative;
}
.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-tint);
}

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 200;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu a {
  display: block;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-ink);
  border-radius: 6px;
  transition: var(--transition-base);
}
.nav-dropdown-menu a:hover {
  background: var(--color-primary-tint);
  color: var(--color-primary);
}

/* Header right controls */
.header-controls { display: flex; align-items: center; gap: 0.5rem; }

/* Hamburger */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 6px;
  color: var(--color-ink);
  transition: var(--transition-base);
}
.menu-toggle:hover { background: var(--color-surface-alt); }
@media (min-width: 1024px) { .menu-toggle { display: none; } }

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  min-height: 72px;
}
.mobile-menu-body { padding: 1.5rem; flex: 1; }
.mobile-nav-link {
  display: block;
  padding: 0.875rem 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
  transition: color 0.2s;
}
.mobile-nav-link:hover { color: var(--color-primary); }
.mobile-nav-section { margin-top: 1rem; }
.mobile-nav-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  padding: 0.75rem 0 0.25rem;
}
.mobile-nav-sub {
  display: block;
  padding: 0.625rem 0 0.625rem 1rem;
  font-size: 0.9375rem;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav-sub:hover { color: var(--color-primary); }

/* ---------------------------------------------------------
   8. FOOTER
   --------------------------------------------------------- */
#site-footer {
  background: var(--color-surface-dark);
  color: #fff;
  padding-top: 4rem;
  padding-bottom: 2rem;
}
.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1.5fr; } }

.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1rem;
}
.footer-link {
  display: block;
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.7);
  padding: 0.25rem 0;
  transition: color 0.2s;
}
.footer-link:hover { color: #fff; }
.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: #fff; }

/* ---------------------------------------------------------
   9. FLOATING BUTTONS
   --------------------------------------------------------- */
/* WhatsApp */
.fab-whatsapp {
  position: fixed;
  bottom: 6rem;
  right: 1.5rem;
  z-index: 90;
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  color: #fff;
}
.fab-whatsapp:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(37,211,102,0.5);
  color: #fff;
}
.fab-whatsapp svg { width: 28px; height: 28px; fill: currentColor; }

/* Back to top */
.fab-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 90;
  width: 48px; height: 48px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(205,33,41,0.35);
  transition: transform 0.2s ease, opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
  color: #fff;
  border: none;
  cursor: pointer;
}
.fab-top.visible { opacity: 1; pointer-events: auto; }
.fab-top:hover { transform: translateY(-3px); }
.fab-top svg { width: 22px; height: 22px; stroke: currentColor; fill: none; }

/* Dark mode toggle */
.dark-toggle {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: none; background: transparent;
  cursor: pointer;
  border-radius: 50%;
  color: var(--color-ink);
  transition: var(--transition-base);
}
.dark-toggle:hover { background: var(--color-surface-alt); }
.dark-toggle svg { width: 20px; height: 20px; }

/* ---------------------------------------------------------
   10. CARDS
   --------------------------------------------------------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition-slow);
  box-shadow: var(--shadow-card);
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.card-body { padding: 1.75rem; }

/* Capability card */
.cap-card {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: var(--transition-slow);
  box-shadow: var(--shadow-card);
}
.cap-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-6px);
}
.cap-card-icon {
  width: 56px; height: 56px;
  background: var(--color-primary-tint);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.cap-card-icon svg { width: 28px; height: 28px; stroke: var(--color-primary); fill: none; }

/* Article card */
.article-card {
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: var(--transition-slow);
  box-shadow: var(--shadow-card);
}
.article-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.article-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: var(--color-surface-alt);
}
.article-card-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.article-card-category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-tint);
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.article-card-title {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}
.article-card-title a { color: inherit; }
.article-card-title a:hover { color: var(--color-primary); }
.article-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.article-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  margin-top: auto;
}

/* ---------------------------------------------------------
   11. BADGES / TAGS
   --------------------------------------------------------- */
.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  border: 1px solid var(--color-border);
  color: var(--color-ink-muted);
  background: var(--color-surface-alt);
  cursor: pointer;
  transition: var(--transition-base);
}
.badge:hover, .badge.active {
  background: var(--color-primary-tint);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ---------------------------------------------------------
   12. SECTION COMPONENTS
   --------------------------------------------------------- */
/* Stat / Key Numbers */
.stat-card {
  text-align: center;
  padding: 2rem 1rem;
}
.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-label {
  font-size: 0.9375rem;
  color: var(--color-ink-muted);
  font-weight: 500;
}

/* Industry pill strip */
.industry-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-ink);
  transition: var(--transition-base);
}
.industry-pill:hover {
  background: var(--color-primary-tint);
  border-color: var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
}

/* CTA Banner */
.cta-banner {
  background: var(--color-primary);
  color: #fff;
  padding: 4rem 0;
  text-align: center;
}
.cta-banner h2 { color: #fff; }

/* Section divider with red accent */
.section-title-wrapper { margin-bottom: 3rem; }
.section-title-wrapper .section-line {
  display: block;
  width: 48px;
  height: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  margin-top: 0.75rem;
}

/* ---------------------------------------------------------
   13. HERO SECTION
   --------------------------------------------------------- */
.hero {
  background: linear-gradient(135deg, #0f1012 0%, #16181B 50%, #1E2228 100%);
  color: #fff;
  padding: 6rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(205,33,41,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.hero-eyebrow { color: var(--color-primary); }
.hero h1 { color: #fff; font-size: clamp(2.25rem, 5vw, 3.5rem); }
.hero-sub { font-size: 1.125rem; color: rgba(255,255,255,0.75); max-width: 640px; }

/* Animated hero grid lines */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

/* ---------------------------------------------------------
   14. IMAGE PLACEHOLDERS
   --------------------------------------------------------- */
.img-placeholder {
  width: 100%;
  background: var(--color-surface-alt);
  border: 2px dashed var(--color-border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--color-ink-muted);
  font-size: 0.875rem;
  text-align: center;
  padding: 2rem 1rem;
}
.img-placeholder svg { width: 32px; height: 32px; opacity: 0.4; }

/* ---------------------------------------------------------
   15. PROCESS STEPS
   --------------------------------------------------------- */
.process-steps { counter-reset: step; }
.process-step {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  align-items: flex-start;
}
.process-step-num {
  flex-shrink: 0;
  counter-increment: step;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
}

/* ---------------------------------------------------------
   16. BREADCRUMB
   --------------------------------------------------------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-ink-muted);
  padding: 1.25rem 0;
}
.breadcrumb a { color: var(--color-ink-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb-sep { margin: 0 0.25rem; color: var(--color-border); }
.breadcrumb-current { color: var(--color-ink); font-weight: 500; }

/* ---------------------------------------------------------
   17. ARTICLE TYPOGRAPHY (custom, not Tailwind prose)
   --------------------------------------------------------- */
.article-body {
  max-width: 720px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--color-ink);
}
.dark .article-body { color: var(--color-ink); }

.article-body h2 {
  font-size: 1.625rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-border);
}
.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--color-ink);
}
.article-body h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 1.5rem 0 0.5rem;
}
.article-body p { margin-bottom: 1.5rem; }
.article-body ul, .article-body ol {
  margin: 1rem 0 1.5rem;
  padding-left: 1.75rem;
}
.article-body li { margin-bottom: 0.5rem; }
.article-body a { color: var(--color-primary); text-decoration: underline; text-decoration-thickness: 1px; }
.article-body a:hover { color: var(--color-primary-dark); }
.article-body strong { font-weight: 700; color: var(--color-ink); }
.article-body em { font-style: italic; }
.article-body blockquote {
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-tint);
  padding: 1rem 1.5rem;
  border-radius: 0 8px 8px 0;
  margin: 1.5rem 0;
  font-style: italic;
}
.dark .article-body blockquote { background: rgba(205,33,41,0.1); }
.article-body img {
  border-radius: 8px;
  margin: 2rem 0;
  width: 100%;
}
.article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

/* Callout boxes */
.callout {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: 10px;
  margin: 1.75rem 0;
  border: 1px solid;
  align-items: flex-start;
}
.callout-icon { flex-shrink: 0; width: 22px; height: 22px; margin-top: 2px; }
.callout-tip    { background: #ECFDF5; border-color: #A7F3D0; color: #065F46; }
.callout-tip .callout-icon { color: #059669; }
.callout-warning { background: #FFFBEB; border-color: #FCD34D; color: #92400E; }
.callout-warning .callout-icon { color: #D97706; }
.callout-note   { background: #EFF6FF; border-color: #BFDBFE; color: #1E40AF; }
.callout-note .callout-icon { color: #3B82F6; }
.callout-important { background: var(--color-primary-tint); border-color: rgba(205,33,41,0.3); color: var(--color-primary-deepest); }
.callout-important .callout-icon { color: var(--color-primary); }

.dark .callout-tip    { background: rgba(5,150,105,0.12); border-color: rgba(5,150,105,0.3); color: #6EE7B7; }
.dark .callout-warning { background: rgba(217,119,6,0.12); border-color: rgba(217,119,6,0.3); color: #FCD34D; }
.dark .callout-note   { background: rgba(59,130,246,0.12); border-color: rgba(59,130,246,0.3); color: #93C5FD; }

/* Comparison tables */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
  border-radius: 10px;
  border: 1px solid var(--color-border);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.comparison-table th {
  background: var(--color-surface-dark);
  color: #fff;
  padding: 0.875rem 1rem;
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.dark .comparison-table th { background: #0D0F11; }
.comparison-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:nth-child(even) td { background: var(--color-surface-alt); }
.dark .comparison-table tr:nth-child(even) td { background: var(--color-surface-dark); }
.comparison-table .check { color: #059669; font-weight: 700; }
.comparison-table .cross { color: var(--color-primary); }

/* Reading progress bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--color-primary);
  z-index: 200;
  transition: width 0.1s linear;
  border-radius: 0 2px 2px 0;
}

/* Table of contents */
.toc {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}
.dark .toc { background: var(--color-surface-dark); }
.toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: 0.75rem;
}
.toc-list { list-style: none; padding: 0; margin: 0; }
.toc-list li { padding: 0.2rem 0; }
.toc-list a {
  font-size: 0.9rem;
  color: var(--color-ink-muted);
  text-decoration: none;
  transition: color 0.2s;
  display: block;
  padding: 0.15rem 0;
}
.toc-list a:hover, .toc-list a.active { color: var(--color-primary); font-weight: 600; }
.toc-list .toc-h3 { padding-left: 1rem; font-size: 0.85rem; }

/* Sticky TOC sidebar */
.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}
@media (min-width: 1024px) {
  .article-layout { grid-template-columns: 1fr 260px; }
  .toc-sidebar {
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
  }
}

/* FAQ accordion */
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  color: var(--color-ink);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  gap: 1rem;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--color-primary); }
.faq-question svg {
  flex-shrink: 0;
  transition: transform 0.3s ease;
  stroke: currentColor;
  fill: none;
}
.faq-item.open .faq-question svg { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-answer { max-height: 500px; }
.faq-answer-inner { padding: 0 0 1.25rem; color: var(--color-ink-muted); line-height: 1.7; }

/* In-article CTA box */
.article-cta-box {
  background: linear-gradient(135deg, var(--color-primary-deepest), var(--color-primary));
  color: #fff;
  border-radius: 12px;
  padding: 2rem;
  margin: 2.5rem 0;
  text-align: center;
}
.article-cta-box h3 { color: #fff; font-size: 1.25rem; margin-bottom: 0.5rem; }
.article-cta-box p { color: rgba(255,255,255,0.85); margin-bottom: 1.25rem; font-size: 0.9375rem; }

/* Related articles */
.related-articles {
  border-top: 1px solid var(--color-border);
  padding-top: 3rem;
  margin-top: 3rem;
}

/* ---------------------------------------------------------
   18. FORMS
   --------------------------------------------------------- */
.form-group { margin-bottom: 1.5rem; }
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 0.5rem;
}
.form-required { color: var(--color-primary); margin-left: 2px; }
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  -webkit-appearance: none;
}
.dark .form-input, .dark .form-select, .dark .form-textarea {
  background: var(--color-surface-alt);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(205,33,41,0.12);
}
.form-input.error, .form-select.error, .form-textarea.error {
  border-color: var(--color-primary);
}
.form-error {
  font-size: 0.8rem;
  color: var(--color-primary);
  margin-top: 0.35rem;
  display: none;
}
.form-error.visible { display: block; }
.form-textarea { min-height: 140px; resize: vertical; }
.form-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%235C6670' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; background-size: 16px; padding-right: 2.5rem; }

/* File upload */
.file-upload-area {
  border: 2px dashed var(--color-border);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-base);
  background: var(--color-surface-alt);
}
.file-upload-area:hover, .file-upload-area.drag-over {
  border-color: var(--color-primary);
  background: var(--color-primary-tint);
}
.file-upload-area input[type=file] { display: none; }

/* Form messages */
.form-success, .form-error-msg {
  display: none;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  margin-top: 1rem;
}
.form-success { background: #ECFDF5; border: 1px solid #A7F3D0; color: #065F46; display: none; }
.form-error-msg { background: var(--color-primary-tint); border: 1px solid rgba(205,33,41,0.3); color: var(--color-primary-deepest); display: none; }
.form-success.show, .form-error-msg.show { display: block; }

/* ---------------------------------------------------------
   19. PAGE-SPECIFIC: RESOURCES HUB
   --------------------------------------------------------- */
.search-box {
  position: relative;
  max-width: 480px;
}
.search-box input {
  padding-left: 3rem;
  width: 100%;
}
.search-box .search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-ink-muted);
  pointer-events: none;
}

.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--color-ink-muted);
}
.empty-state svg { width: 48px; height: 48px; margin: 0 auto 1rem; opacity: 0.3; }

/* ---------------------------------------------------------
   20. GLOSSARY
   --------------------------------------------------------- */
.glossary-letter {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 0.25rem;
  margin: 2rem 0 1rem;
  display: inline-block;
}
.glossary-term { font-weight: 700; margin-bottom: 0.25rem; color: var(--color-ink); }
.glossary-def { color: var(--color-ink-muted); font-size: 0.9375rem; margin-bottom: 1rem; }

/* ---------------------------------------------------------
   21. INFRASTRUCTURE PAGE
   --------------------------------------------------------- */
.machine-card {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
  background: var(--color-surface);
  transition: var(--transition-slow);
}
.machine-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(205,33,41,0.3);
}
.machine-spec {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.machine-spec:last-child { border-bottom: none; }
.machine-spec-key { color: var(--color-ink-muted); }
.machine-spec-val { font-weight: 600; color: var(--color-ink); }

/* ---------------------------------------------------------
   22. PAGE HERO (inner pages)
   --------------------------------------------------------- */
.page-hero {
  background: var(--color-surface-dark);
  color: #fff;
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 50% 100% at 90% 50%, rgba(205,33,41,0.18) 0%, transparent 70%);
}
.page-hero h1 { color: #fff; }
.page-hero .breadcrumb { color: rgba(255,255,255,0.5); }
.page-hero .breadcrumb a { color: rgba(255,255,255,0.5); }
.page-hero .breadcrumb a:hover { color: #fff; }
.page-hero .breadcrumb-current { color: rgba(255,255,255,0.85); }
.page-hero .breadcrumb-sep { color: rgba(255,255,255,0.3); }

/* ---------------------------------------------------------
   23. ANIMATIONS / FADE-IN ON SCROLL
   --------------------------------------------------------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

.fade-in {
  opacity: 0;
  transition: opacity 0.6s ease;
}
.fade-in.visible { opacity: 1; }

/* Stagger children */
.stagger-children > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children > *:nth-child(5) { transition-delay: 0.25s; }
.stagger-children > *:nth-child(6) { transition-delay: 0.3s; }

/* ---------------------------------------------------------
   24. PRINT STYLES
   --------------------------------------------------------- */
@media print {
  #site-header, #site-footer, .fab-whatsapp, .fab-top, .toc-sidebar,
  .article-cta-box, .related-articles, .reading-progress { display: none !important; }
  body { color: #000; background: #fff; font-size: 12pt; }
  .article-body { max-width: 100%; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 10pt; color: #555; }
  h2, h3 { page-break-after: avoid; }
  img { max-width: 100%; }
  .page-hero { background: #f0f0f0 !important; color: #000 !important; padding: 1rem 0; }
  .page-hero h1 { color: #000 !important; }
}

/* ---------------------------------------------------------
   25. DARK MODE SPECIFIC OVERRIDES
   --------------------------------------------------------- */
.dark .cap-card { background: var(--color-surface-alt); }
.dark .article-card { background: var(--color-surface-alt); }
.dark .machine-card { background: var(--color-surface-alt); }
.dark .card { background: var(--color-surface-alt); }
.dark .nav-dropdown-menu { background: var(--color-surface-dark); border-color: var(--color-border); }
.dark .mobile-menu { background: var(--color-surface-dark); }

/* ---------------------------------------------------------
   26. UTILITY HELPERS
   --------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 2rem 0;
}

/* Responsive grid helpers */
.grid-caps { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 640px)  { .grid-caps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-caps { grid-template-columns: repeat(3, 1fr); } }

.grid-articles { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 640px)  { .grid-articles { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-articles { grid-template-columns: repeat(3, 1fr); } }

.grid-4 { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 640px)  { .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-4 { grid-template-columns: repeat(4, 1fr); } }