/* ============================================
   ADS — Advanced Data Solutions
   Design Tokens & Component Styles
   ============================================ */

:root, [data-theme="light"] {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ADS Brand Colors — Professional Navy + Teal */
  --color-bg:             #f8f9fa;
  --color-surface:        #ffffff;
  --color-surface-2:      #f1f3f5;
  --color-surface-offset: #e9ecef;
  --color-divider:        #dee2e6;
  --color-border:         #ced4da;

  --color-text:           #1a1a2e;
  --color-text-muted:     #5c6370;
  --color-text-faint:     #adb5bd;
  --color-text-inverse:   #ffffff;

  /* Primary — Navy */
  --color-navy:           #0f2b46;
  --color-navy-light:     #1a3a5c;
  --color-navy-dark:      #091e33;

  /* Accent — Teal */
  --color-primary:        #00b4d8;
  --color-primary-hover:  #0096b7;
  --color-primary-active: #007a96;

  /* CTA — Bright Teal */
  --color-cta:            #00b4d8;
  --color-cta-hover:      #0096b7;

  /* Success/Trust — Green */
  --color-success:        #2d9a5c;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 43, 70, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 43, 70, 0.1);
  --shadow-lg: 0 12px 32px rgba(15, 43, 70, 0.12);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;

  /* Fonts */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
}

/* Dark Mode */
[data-theme="dark"] {
  --color-bg:             #0d1b2a;
  --color-surface:        #1b2838;
  --color-surface-2:      #243447;
  --color-surface-offset: #162332;
  --color-divider:        #2a3f55;
  --color-border:         #354d66;

  --color-text:           #e0e6ed;
  --color-text-muted:     #8899aa;
  --color-text-faint:     #5a6d7f;
  --color-text-inverse:   #0d1b2a;

  --color-navy:           #1b3a5c;
  --color-navy-light:     #264d73;
  --color-navy-dark:      #0d1b2a;

  --color-primary:        #4dc9e6;
  --color-primary-hover:  #33b8d8;
  --color-primary-active: #1aa8ca;

  --color-cta:            #4dc9e6;
  --color-cta-hover:      #33b8d8;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0d1b2a;
    --color-surface:        #1b2838;
    --color-surface-2:      #243447;
    --color-surface-offset: #162332;
    --color-divider:        #2a3f55;
    --color-border:         #354d66;
    --color-text:           #e0e6ed;
    --color-text-muted:     #8899aa;
    --color-text-faint:     #5a6d7f;
    --color-text-inverse:   #0d1b2a;
    --color-navy:           #1b3a5c;
    --color-navy-light:     #264d73;
    --color-navy-dark:      #0d1b2a;
    --color-primary:        #4dc9e6;
    --color-primary-hover:  #33b8d8;
    --color-primary-active: #1aa8ca;
    --color-cta:            #4dc9e6;
    --color-cta-hover:      #33b8d8;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

/* ============================================
   GLOBAL COMPONENTS
   ============================================ */

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  z-index: 100;
  text-decoration: none;
}
.skip-link:focus { top: var(--space-2); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-navy) l c h / 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.header-top {
  background: var(--color-navy-dark);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.7);
}
.header-top .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.header-top a {
  color: var(--color-primary);
  text-decoration: none;
}
.header-top a:hover { color: #fff; }

.header-main {
  padding: var(--space-3) var(--space-4);
}
.header-main .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: #fff;
  flex-shrink: 0;
}
.logo svg { width: 44px; height: 44px; }
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-text .company-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: #fff;
  letter-spacing: 0.02em;
}
.logo-text .company-sub {
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Navigation */
.main-nav { display: flex; align-items: center; gap: var(--space-1); }
.main-nav a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-weight: 500;
  white-space: nowrap;
}
.main-nav a:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.main-nav a.active {
  color: var(--color-primary);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}
.nav-dropdown > a::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  margin-left: 6px;
  vertical-align: middle;
}
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--color-navy);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  box-shadow: var(--shadow-lg);
  z-index: 60;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
  display: block;
}
.dropdown-menu a {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: rgba(255,255,255,0.8);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}
.dropdown-menu a:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}

/* Mobile Menu */
.mobile-toggle {
  display: none;
  padding: var(--space-2);
  color: #fff;
}
.mobile-toggle svg { width: 28px; height: 28px; }

@media (max-width: 1023px) {
  .mobile-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-navy);
    flex-direction: column;
    padding: var(--space-4);
    border-top: 1px solid rgba(255,255,255,0.08);
    gap: var(--space-1);
  }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; }
  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: var(--space-4);
    min-width: auto;
  }
  .nav-dropdown:hover .dropdown-menu { display: none; }
  .nav-dropdown.open .dropdown-menu { display: block; }
}

/* Header CTA */
.header-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-cta);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.header-cta:hover {
  background: var(--color-cta-hover);
  transform: translateY(-1px);
}

/* Theme Toggle */
.theme-toggle {
  padding: var(--space-2);
  color: rgba(255,255,255,0.7);
  border-radius: var(--radius-md);
}
.theme-toggle:hover { color: #fff; background: rgba(255,255,255,0.08); }

/* Container */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
.container--narrow { max-width: var(--content-default); }

/* Hero Sections */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  background: var(--color-navy);
  overflow: hidden;
}
.hero--full { min-height: 85vh; }
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.25;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-navy-dark) 0%, transparent 60%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--space-16) 0;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 180, 216, 0.15);
  border: 1px solid rgba(0, 180, 216, 0.3);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-6);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: #fff;
  margin-bottom: var(--space-6);
  line-height: 1.1;
}
.hero p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-8);
  max-width: 560px;
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
}

/* Page Hero (smaller, for inner pages) */
.page-hero {
  position: relative;
  padding: clamp(var(--space-12), 8vw, var(--space-20)) 0;
  background: var(--color-navy);
  overflow: hidden;
}
.page-hero .hero-bg { opacity: 0.15; }
.page-hero .hero-overlay {
  background: linear-gradient(135deg, var(--color-navy-dark) 0%, rgba(15,43,70,0.8) 100%);
}
.page-hero-content {
  position: relative;
  z-index: 2;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: #fff;
  margin-bottom: var(--space-4);
}
.page-hero p {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.75);
  max-width: 600px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-interactive);
}
.btn--primary {
  background: var(--color-cta);
  color: #fff;
}
.btn--primary:hover {
  background: var(--color-cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 180, 216, 0.3);
}
.btn--outline {
  border-color: rgba(255,255,255,0.4);
  color: #fff;
  background: transparent;
}
.btn--outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.08);
}
.btn--outline-dark {
  border-color: var(--color-navy);
  color: var(--color-navy);
  background: transparent;
}
.btn--outline-dark:hover {
  background: var(--color-navy);
  color: #fff;
}
.btn--lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
}

/* Sections */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
}
.section--alt {
  background: var(--color-surface-2);
}
.section--navy {
  background: var(--color-navy);
  color: #fff;
}
.section--navy .section-subtitle { color: rgba(255,255,255,0.7); }
.section--navy h2, .section--navy h3 { color: #fff; }

.section-header {
  text-align: center;
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-16));
}
.section-header--left { text-align: left; }
.section-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.section-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-inline: auto;
}
.section-header--left .section-subtitle { margin-inline: 0; }

/* Stats Bar */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  padding: var(--space-8) 0;
}
.stat-item {
  text-align: center;
  padding: var(--space-4);
}
.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}
@media (max-width: 767px) {
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}

/* Service Cards */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
  gap: var(--space-6);
}
.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: all var(--transition-interactive);
  text-decoration: none;
  color: var(--color-text);
  display: flex;
  flex-direction: column;
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.service-card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-5);
  color: var(--color-primary);
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.service-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex: 1;
  margin-bottom: var(--space-4);
}
.service-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
}
.service-card:hover .card-link { gap: var(--space-3); }

/* Industry Cards */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: var(--space-6);
}
.industry-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  text-decoration: none;
  color: var(--color-text);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: all var(--transition-interactive);
}
.industry-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--color-primary);
}
.industry-card-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto var(--space-4);
  color: var(--color-primary);
}
.industry-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.industry-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Feature List */
.features-list {
  list-style: none;
  padding: 0;
}
.features-list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
}
.features-list li::before {
  content: '';
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--color-primary);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/contain no-repeat;
  margin-top: 2px;
}

/* Testimonial */
.testimonial {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-10);
  box-shadow: var(--shadow-md);
  max-width: 800px;
  margin-inline: auto;
  position: relative;
}
.testimonial::before {
  content: '"';
  position: absolute;
  top: var(--space-4);
  left: var(--space-6);
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--color-primary);
  opacity: 0.3;
  line-height: 1;
}
.testimonial blockquote {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  font-style: italic;
}
.testimonial-author {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.testimonial-role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Trust Badges */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-6) 0;
}
.trust-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  text-align: center;
}
.trust-badge-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
}
.trust-badge span {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Two Column Layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 4vw, var(--space-16));
  align-items: center;
}
.two-col--reverse { direction: rtl; }
.two-col--reverse > * { direction: ltr; }
@media (max-width: 767px) {
  .two-col { grid-template-columns: 1fr; }
  .two-col--reverse { direction: ltr; }
}

/* Content Block */
.content-block h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.content-block h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}
.content-block p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

/* Image Placeholder */
.img-block {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.2);
  position: relative;
}
.img-block img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Process Steps */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(240px, 100%), 1fr));
  gap: var(--space-6);
  counter-reset: step;
}
.process-step {
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  counter-increment: step;
}
.process-step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.process-step h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.process-step p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  padding: clamp(var(--space-10), 6vw, var(--space-20));
  border-radius: var(--radius-xl);
  text-align: center;
  color: #fff;
}
.cta-banner h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
  color: #fff;
}
.cta-banner p {
  color: rgba(255,255,255,0.75);
  margin-bottom: var(--space-8);
  max-width: 500px;
  margin-inline: auto;
}
.cta-banner .btn--primary {
  font-size: var(--text-base);
}

/* Contact Form */
.contact-form {
  display: grid;
  gap: var(--space-5);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: var(--text-base);
  transition: border-color var(--transition-interactive);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.15);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* Footer */
.site-footer {
  background: var(--color-navy-dark);
  color: rgba(255,255,255,0.75);
  padding: var(--space-16) 0 var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
@media (max-width: 767px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-about .logo { margin-bottom: var(--space-4); }
.footer-about p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
  max-width: 320px;
}
.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: var(--space-2); }
.footer-col a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: var(--text-sm);
}
.footer-col a:hover { color: var(--color-primary); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.4);
}
.footer-bottom a {
  color: rgba(255,255,255,0.4);
  text-decoration: none;
}
.footer-bottom a:hover { color: var(--color-primary); }

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin-inline: auto;
}
.faq-item {
  border-bottom: 1px solid var(--color-divider);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: var(--space-5) 0;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}
.faq-question::after {
  content: '+';
  font-size: var(--text-lg);
  color: var(--color-primary);
  transition: transform var(--transition-interactive);
  flex-shrink: 0;
}
.faq-item.open .faq-question::after {
  content: '−';
}
.faq-answer {
  display: none;
  padding-bottom: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* Prose Content */
.prose {
  max-width: 72ch;
}
.prose h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}
.prose h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}
.prose p {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}
.prose ul, .prose ol {
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}
.prose li {
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

/* Article Cards */
.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: var(--space-6);
}
.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-interactive);
}
.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.article-card-img {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
}
.article-card-body {
  padding: var(--space-5);
}
.article-card-tag {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}
.article-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.article-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Scroll Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Phone Link */
.phone-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}
.phone-link:hover { color: var(--color-primary-hover); }

/* Contact Info Block */
.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.contact-info-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.contact-info-item svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 2px;
}
.contact-info-item h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-1);
}
.contact-info-item p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.contact-info-item a {
  color: var(--color-primary);
  text-decoration: none;
}
.contact-info-item a:hover { color: var(--color-primary-hover); }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-4);
}
.breadcrumb a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
}
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { color: rgba(255,255,255,0.7); }

/* Certifications badges inline */
.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
}

/* Advantage grid */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr));
  gap: var(--space-5);
}
.advantage-item {
  padding: var(--space-5);
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.08);
}
.advantage-item h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.advantage-item p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.6);
}