/* =====================================================
   SAITS - Swiss AI Tech Service
   Clean & Professional Design Theme
   ===================================================== */

/* =====================================================
   1. CSS VARIABLES - Unified Color Theme
   ===================================================== */
:root {
  /* Primary Brand Colors */
  --color-primary: #172554;
  --color-primary-dark: #1e3a8a;
  --color-primary-light: #2563eb;

  /* Neutral Colors */
  --color-black: #1a1a1a;
  --color-white: #FFFFFF;
  --color-gray-50: #f9fafb;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #E5E5E5;
  --color-gray-300: #d1d5db;
  --color-gray-500: #666666;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;

  /* Typography */
  --font-heading: 'DM Serif Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;

  /* Container */
  --container-max: 1400px;
  --container-padding: 3rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

/* =====================================================
   2. RESET & BASE
   ===================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-black);
  background-color: var(--color-white);
}

h1,
h2,
h3 {
  font-family: 'DM Serif Display', Georgia, serif;
  font-weight: 400;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

/* =====================================================
   3. TYPOGRAPHY - Large & Bold
   ===================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 300;
}

h2 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 300;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
}

h4 {
  font-size: 1.25rem;
  font-weight: 500;
}

p {
  color: var(--color-gray-500);
  line-height: 1.7;
}

.text-white {
  color: var(--color-white);
}

.text-muted {
  color: var(--color-gray-500);
}

/* =====================================================
   4. LAYOUT
   ===================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-2xl) 0;
}

/* =====================================================
   5. HEADER - Minimal Transparent
   ===================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  transition: all var(--transition-base);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  height: 24px;
  width: auto;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--color-white);
  text-transform: uppercase;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.header.scrolled .logo-text {
  color: #172554;
}

.footer .logo-text {
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--color-white);
  margin-bottom: 1rem;
  display: inline-block;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 42px;
  width: auto;
}

.header.scrolled .logo-img {
  filter: none;
}

.footer-logo {
  height: 28px;
}

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-white);
}

.header.scrolled .nav-link {
  color: #0a1628;
}

.header.scrolled .nav-link:hover {
  color: #152238;
}

/* Header on light background pages (no hero image) */
.header-dark .logo-text,
.header-dark .nav-link {
  color: #1f2937;
}

.header-dark .nav-link:hover {
  color: #111827;
}

.header-dark .nav-link svg {
  color: #1f2937;
}

.header-dark .mobile-menu-btn span {
  background-color: #1f2937;
}

.header-dark .mobile-menu-btn.active span {
  background-color: #1f2937;
}

/* Ensure header-dark works when scrolled too */
.header-dark.scrolled .logo-text,
.header-dark.scrolled .nav-link {
  color: #1f2937;
}

.header-dark.scrolled .mobile-menu-btn span {
  background-color: #1f2937;
}

/* Dropdown Menu */
.nav-dropdown {
  position: relative;
}

.nav-dropdown>.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-dropdown>.nav-link svg {
  transition: transform var(--transition-fast);
}

.nav-dropdown:hover>.nav-link svg {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 240px;
  background: var(--color-white);
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  margin-top: 0.5rem;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.dropdown-menu a {
  display: block;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  color: var(--color-gray-500);
  transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
  background: var(--color-gray-100);
  color: var(--color-black);
}

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  position: relative;
  z-index: 1001;
  cursor: pointer;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: all var(--transition-fast);
  display: block;
}

.header.scrolled .mobile-menu-btn span {
  background-color: var(--color-black);
}

/* Mobile menu button active state - X icon */
.mobile-menu-btn.active span {
  background-color: var(--color-black);
}

.mobile-menu-btn.active span:first-child {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:last-child {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.mobile-nav-link {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-black);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--color-primary);
}

/* =====================================================
   6. HERO - Full Viewport with Image
   ===================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding-bottom: var(--space-3xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
      rgba(37, 99, 235, 0.85) 0%,
      rgba(29, 78, 216, 0.75) 50%,
      rgba(59, 130, 246, 0.65) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 900px;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 500px;
  line-height: 1.6;
}

/* =====================================================
   7. COLORED SECTIONS - Upline Style Blocks
   ===================================================== */
.block-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.block-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.block-content {
  max-width: 500px;
}

.block-content h2 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.block-content p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
  margin-bottom: var(--space-lg);
}

.block-image {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 50%;
  background-size: cover;
  background-position: center;
  opacity: 0.7;
  mix-blend-mode: overlay;
}

/* Color variations - Consistent Blue Theme */
.block-orange {
  background-color: var(--color-primary);
}

.block-purple {
  background-color: var(--color-primary-dark);
}

.block-blue {
  background-color: var(--color-primary);
}

.block-pink {
  background-color: var(--color-primary-light);
}

/* =====================================================
   8. SERVICES SECTION - Clean Grid
   ===================================================== */
.services {
  background-color: var(--color-white);
  padding: var(--space-2xl) 0;
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.service-card {
  padding: var(--space-lg);
  border: 1px solid var(--color-gray-200);
  border-radius: 16px;
  transition: all var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(20, 60, 255, 0.1);
  border-radius: 12px;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h4 {
  margin-bottom: var(--space-xs);
}

/* =====================================================
   9. VALUES / WHY SECTION
   ===================================================== */
.why-section {
  background-color: var(--color-gray-100);
  padding: var(--space-2xl) 0;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.value-card {
  background: var(--color-white);
  padding: var(--space-lg);
  border-radius: 16px;
}

.value-card h4 {
  margin-bottom: var(--space-sm);
}

/* =====================================================
   10. PROCESS SECTION
   ===================================================== */
.process-section {
  background: var(--color-white);
  padding: var(--space-2xl) 0;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-md);
}

.process-step {
  text-align: center;
  padding: var(--space-lg);
}

.step-number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.25rem;
  font-weight: 500;
  border-radius: 50%;
  margin: 0 auto var(--space-md);
}

.process-step h4 {
  margin-bottom: var(--space-xs);
}

.process-step p {
  font-size: 0.875rem;
}

/* =====================================================
   11. CTA SECTION - Consistent Blue Theme
   ===================================================== */
.cta-section {
  background: var(--color-white);
  padding: var(--space-2xl) 0;
  text-align: center;
  border-top: 1px solid var(--color-gray-200);
}

.cta-section h2 {
  color: var(--color-black);
  margin-bottom: var(--space-sm);
}

.cta-section p {
  color: var(--color-gray-500);
  max-width: 500px;
  margin: 0 auto var(--space-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(37, 99, 235, 0.35);
}

.btn-white {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-white:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* =====================================================
   12. FOOTER - Deep Blue Universal Theme
   ===================================================== */
.footer {
  background: #1f2937;
  color: var(--color-white);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo-text {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  display: block;
  color: var(--color-white);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-contact a,
.footer-contact span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact a:hover {
  color: var(--color-white);
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: rgba(255, 255, 255, 0.8);
}

.footer-section h5 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
  color: var(--color-white);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom .logo-text {
  color: var(--color-white);
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
}

.footer-social a,
.footer-social button {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  color: rgba(255, 255, 255, 0.5);
  transition: all var(--transition-fast);
}

.footer-social a:hover,
.footer-social button:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

/* =====================================================
   13. CONTACT PAGE
   ===================================================== */
.contact-hero {
  padding: 160px 0 var(--space-2xl);
  background: var(--color-gray-100);
}

.contact-hero h1 {
  margin-bottom: var(--space-sm);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.contact-form {
  background: var(--color-white);
  padding: var(--space-xl);
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  transition: all var(--transition-fast);
  background: white;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.contact-info h2 {
  margin-bottom: var(--space-md);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.contact-method {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-white);
  border-radius: 12px;
}

.contact-method h4 {
  margin-bottom: 0.25rem;
}

.contact-method p {
  font-size: 0.875rem;
  margin: 0;
}

.contact-method a {
  color: var(--color-primary);
  font-weight: 500;
}

/* =====================================================
   14. SOLUTIONS PAGE
   ===================================================== */
.solutions-hero {
  padding: 160px 0 var(--space-2xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
}

.solutions-hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.solutions-hero p {
  color: rgba(255, 255, 255, 0.8);
}

.solution-block {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.solution-block:last-child {
  border-bottom: none;
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.solution-content h3 {
  margin-bottom: var(--space-md);
}

.solution-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.solution-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.solution-feature svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
}

/* =====================================================
   15. ANIMATIONS
   ===================================================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================================================
   16. RESPONSIVE
   ===================================================== */

/* Large tablets and small desktops */
@media (max-width: 1200px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablets */
@media (max-width: 1023px) {
  :root {
    --container-padding: 2rem;
  }

  .nav {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .block-section .container {
    grid-template-columns: 1fr;
  }

  .block-image {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }

  .solution-grid {
    grid-template-columns: 1fr;
  }

  /* Hero adjustments */
  .hero {
    min-height: 80vh;
    padding-bottom: var(--space-2xl);
  }

  .hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
  }

  .hero-subtitle {
    font-size: 1rem;
  }
}

/* Mobile devices */
@media (max-width: 767px) {
  :root {
    --container-padding: 1.25rem;
    --space-3xl: 4rem;
    --space-2xl: 2.5rem;
    --space-xl: 2rem;
    --space-lg: 1.5rem;
  }

  /* Typography scaling */
  h1 {
    font-size: clamp(2rem, 8vw, 2.5rem);
  }

  h2 {
    font-size: clamp(1.75rem, 6vw, 2rem);
  }

  h3 {
    font-size: clamp(1.25rem, 4vw, 1.5rem);
  }

  p {
    font-size: 0.9375rem;
  }

  /* Header mobile */
  .header {
    padding: var(--space-sm) 0;
  }

  .logo-text {
    font-size: 1.125rem;
    letter-spacing: 0.2em;
  }

  /* Hero mobile */
  .hero {
    min-height: 70vh;
    padding-bottom: var(--space-xl);
    align-items: center;
  }

  .hero h1 {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
  }

  .hero-subtitle {
    font-size: 0.9375rem;
    line-height: 1.6;
  }

  /* Grids */
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .values-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .process-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }

  /* Service cards */
  .service-card {
    padding: var(--space-md);
  }

  .service-icon {
    width: 40px;
    height: 40px;
    margin-bottom: var(--space-sm);
  }

  .service-icon svg {
    width: 20px;
    height: 20px;
  }

  /* Value cards */
  .value-card {
    padding: var(--space-md);
  }

  /* Process steps */
  .process-step {
    padding: var(--space-sm);
  }

  .step-number {
    width: 44px;
    height: 44px;
    font-size: 1rem;
    margin-bottom: var(--space-sm);
  }

  .process-step h4 {
    font-size: 0.875rem;
  }

  .process-step p {
    font-size: 0.8125rem;
  }

  /* Block sections */
  .block-section {
    min-height: auto;
    padding: var(--space-2xl) 0;
  }

  .block-content h2 {
    font-size: 1.75rem;
    margin-bottom: var(--space-sm);
  }

  .block-content p {
    font-size: 0.9375rem;
  }

  /* Buttons - touch friendly */
  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
    min-height: 44px;
    width: 100%;
    justify-content: center;
  }

  .btn-outline {
    width: auto;
  }

  /* CTA section */
  .cta-section {
    padding: var(--space-xl) 0;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }

  .cta-section p {
    font-size: 0.9375rem;
    margin-bottom: var(--space-md);
  }

  /* Footer mobile */
  .footer {
    padding: var(--space-xl) 0 var(--space-md);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }

  .footer-brand {
    max-width: 100%;
    align-items: center;
  }

  .footer-brand .logo-text {
    font-size: 1.25rem;
  }

  .footer-contact {
    align-items: center;
  }

  .footer-section {
    text-align: center;
  }

  .footer-section h5 {
    margin-bottom: var(--space-sm);
  }

  .footer-links {
    align-items: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
    padding-top: var(--space-md);
  }

  .footer-social {
    justify-content: center;
  }

  /* Contact page */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .contact-hero {
    padding: 120px 0 var(--space-xl);
  }

  .contact-hero h1 {
    font-size: 2rem;
  }

  .contact-form {
    padding: var(--space-md);
  }

  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 0.75rem;
    font-size: 16px;
    /* Prevents zoom on iOS */
  }

  .contact-method {
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }

  /* Solutions page */
  .solutions-hero {
    padding: 120px 0 var(--space-xl);
  }

  .solutions-hero h1 {
    font-size: 2rem;
  }

  .solution-block {
    padding: var(--space-xl) 0;
  }

  .solution-grid {
    gap: var(--space-lg);
  }

  .solution-content h3 {
    font-size: 1.5rem;
  }

  /* Mobile menu enhancements */
  .mobile-menu {
    padding: var(--space-xl);
  }

  .mobile-nav {
    gap: var(--space-md);
  }

  .mobile-nav-link {
    font-size: 1.25rem;
    padding: var(--space-sm) 0;
  }

  /* Dropdown on mobile - hide */
  .dropdown-menu {
    display: none;
  }
}

/* Small mobile devices */
@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero {
    min-height: 60vh;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .process-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-grid {
    gap: var(--space-md);
  }

  /* Ensure touch targets are at least 44px */
  .footer-links a,
  .footer-contact a,
  .footer-contact span {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .footer-social a,
  .footer-social button {
    width: 44px;
    height: 44px;
  }
}

/* Landscape mobile */
@media (max-width: 767px) and (orientation: landscape) {
  .hero {
    min-height: 100vh;
    padding-top: 80px;
  }

  .block-section {
    min-height: auto;
  }
}

/* High DPI screens */
@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
  .logo-img {
    image-rendering: -webkit-optimize-contrast;
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* =====================================================
   17. UTILITIES
   ===================================================== */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-sm {
  margin-bottom: var(--space-sm);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

/* Logo visibility adjustments */
.header .logo-img {
  filter: none;
  /* White logo visible on dark hero */
}

.header.scrolled .logo-img {
  filter: brightness(0) saturate(100%) invert(12%) sepia(45%) saturate(2000%) hue-rotate(200deg) brightness(95%) contrast(95%);
  /* Dark blue on white background */
}

.footer .logo-img {
  filter: none;
  /* White logo visible on dark footer */
}

/* Footer Logo Adjustments */
.footer-brand .logo-img.footer-logo {
  height: 48px;
  width: auto;
  margin-bottom: 1rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* Mobile footer alignment fix */
@media (max-width: 767px) {
  .footer-brand {
    align-items: center;
    text-align: center;
  }

  .footer-contact {
    align-items: center;
  }

  .footer-contact a,
  .footer-contact span {
    justify-content: center;
  }

  .footer-links {
    align-items: center;
  }
}

/* Large screens (2K and above) */
@media (min-width: 1600px) {
  :root {
    --container-max: 1600px;
    --container-padding: 4rem;
  }

  h1 {
    font-size: 5rem;
  }

  h2 {
    font-size: 3.5rem;
  }

  .hero {
    min-height: 90vh;
  }

  .hero h1 {
    font-size: 5rem;
  }

  .hero-subtitle {
    font-size: 1.35rem;
    max-width: 600px;
  }
}

/* 4K screens */
@media (min-width: 2560px) {
  :root {
    --container-max: 1920px;
    --container-padding: 5rem;
  }

  body {
    font-size: 18px;
  }

  h1 {
    font-size: 6rem;
  }

  h2 {
    font-size: 4rem;
  }
}