/* ============================================
   IESES - Instituto de Estudos Superiores do Extremo Sul
   Stylesheet Principal
   Mobile-First | WCAG AAA Compliant
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   Baseado no Manual da Marca IESES - Agosto/2023
   ============================================ */

:root {
  /* Cores Institucionais - Conforme Manual da Marca */
  --color-primary: #363b68; /* Azul Institucional */
  --color-secondary: #76a96b; /* Verde Institucional */
  --color-concursos: #e6a444; /* Laranja - Concursos */
  --color-social: #8a5ea4; /* Roxo - Social */
  --color-ensino: #5e8d9c; /* Azul esverdeado - Ensino */

  /* Cores Neutras */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-black: #000000;

  /* Tipografia - Conforme Manual da Marca */
  --font-primary:
    "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-secondary: Verdana, Geneva, sans-serif;

  /* Font Sizes - Mobile First (Base 16px) */
  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem; /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem; /* 20px */
  --font-size-2xl: 1.5rem; /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem; /* 36px */
  --font-size-5xl: 3rem; /* 48px */

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing Scale */
  --space-1: 0.25rem; /* 4px */
  --space-2: 0.5rem; /* 8px */
  --space-3: 0.75rem; /* 12px */
  --space-4: 1rem; /* 16px */
  --space-5: 1.25rem; /* 20px */
  --space-6: 1.5rem; /* 24px */
  --space-8: 2rem; /* 32px */
  --space-10: 2.5rem; /* 40px */
  --space-12: 3rem; /* 48px */
  --space-16: 4rem; /* 64px */
  --space-20: 5rem; /* 80px */

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg:
    0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl:
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;

  /* Container Max Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;

  /* Focus Visible Styles - WCAG AAA */
  --focus-ring: 0 0 0 3px rgba(54, 59, 104, 0.3);
  --focus-ring-offset: 2px;
}

/* High Contrast Mode Variables */
body.high-contrast {
  --color-primary: #000000;
  --color-secondary: #000000;
  --color-concursos: #000000;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray-100: #ffffff;
  --color-gray-900: #000000;
}

/* ============================================
   2. RESET & BASE STYLES
   ============================================ */

/* Modern CSS Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%; /* 16px base - permite zoom do navegador */
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

/* Respeitar preferências de movimento reduzido */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Font Size Control via Body Classes */
body.font-size-increase {
  font-size: 1.125rem; /* 18px */
}

body.font-size-increase-2 {
  font-size: 1.25rem; /* 20px */
}

body.font-size-decrease {
  font-size: 0.875rem; /* 14px */
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--font-size-3xl);
}
h2 {
  font-size: var(--font-size-2xl);
}
h3 {
  font-size: var(--font-size-xl);
}
h4 {
  font-size: var(--font-size-lg);
}
h5 {
  font-size: var(--font-size-base);
}
h6 {
  font-size: var(--font-size-sm);
}

/* Tablet */
@media (min-width: 768px) {
  h1 {
    font-size: var(--font-size-4xl);
  }
  h2 {
    font-size: var(--font-size-3xl);
  }
  h3 {
    font-size: var(--font-size-2xl);
  }
}

/* Desktop */
@media (min-width: 1024px) {
  h1 {
    font-size: var(--font-size-5xl);
  }
  h2 {
    font-size: var(--font-size-4xl);
  }
}

p {
  margin-bottom: var(--space-4);
}

.lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-700);
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-sm);
}

/* ============================================
   4. ACCESSIBILITY UTILITIES
   ============================================ */

/* Screen Reader Only */
.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;
}

/* Skip Links */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-4) var(--space-6);
  text-decoration: none;
  font-weight: 700;
  z-index: var(--z-tooltip);
  border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Accessibility Controls Toolbar */
.accessibility-controls {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  gap: var(--space-2);
  z-index: var(--z-fixed);
  background: var(--color-white);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.accessibility-controls button {
  width: 44px;
  height: 44px;
  border: 2px solid var(--color-primary);
  background: var(--color-white);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-lg);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.accessibility-controls button:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.05);
}

.accessibility-controls button:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

.accessibility-controls button:active {
  transform: scale(0.98);
}

/* Focus Visible Styling - WCAG AAA */
*:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================
   5. LAYOUT COMPONENTS
   ============================================ */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

/* ============================================
   6. HEADER
   ============================================ */

.site-header {
  background: var(--color-white);
  border-bottom: 2px solid var(--color-gray-200);
  padding: var(--space-4) 0;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

@media (min-width: 768px) {
  .header-content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.logo-link {
  display: inline-block;
  text-decoration: none;
  transition: transform var(--transition-base);
}

.logo-link:hover {
  transform: scale(1.02);
}

.logo-link:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-md);
}

.logo {
  width: 180px;
  height: auto;
  display: block;
}

@media (min-width: 768px) {
  .logo {
    width: 220px;
  }
}

.tagline {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  font-style: italic;
  max-width: 300px;
  margin: 0;
}

@media (min-width: 768px) {
  .tagline {
    font-size: var(--font-size-base);
    max-width: 400px;
  }
}

/* ============================================
   7. NAVIGATION
   ============================================ */

.main-nav {
  background: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-md);
}

.nav-wrapper {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

@media (min-width: 768px) {
  .nav-wrapper {
    align-items: center;
  }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  width: auto;
  text-align: left;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin: var(--space-3) 0;
  font-size: var(--font-size-base);
  font-family: var(--font-primary);
  font-weight: 600;
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

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

@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.hamburger {
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  left: 0;
  transition: transform var(--transition-fast);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  bottom: -8px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger {
  background: transparent;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Navigation Menu */
.nav-menu {
  list-style: none;
  display: none;
  flex-direction: column;
  background: var(--color-primary);
  margin-top: var(--space-2);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

/* Fallback: Se JS não carregar, menu aparece ao fazer hover no botão */
.mobile-menu-toggle:hover + .nav-menu,
.mobile-menu-toggle:focus + .nav-menu,
.nav-menu:hover {
  display: flex;
}

.nav-menu.is-open {
  display: flex;
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 768px) {
  .nav-menu {
    display: flex !important;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: var(--space-2);
    margin-top: 0;
    background: transparent;
  }
}

.nav-menu li {
  margin: 0;
}

.nav-menu a {
  display: block;
  color: var(--color-white);
  text-decoration: none;
  padding: var(--space-4) var(--space-6);
  font-weight: 500;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    border-left-color var(--transition-fast),
    border-bottom-color var(--transition-fast);
  border-left: 3px solid transparent;
}

@media (min-width: 768px) {
  .nav-menu a {
    padding: var(--space-3) var(--space-4);
    border-left: none;
    border-bottom: 3px solid transparent;
    border-radius: var(--radius-sm);
  }
}

.nav-menu a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-menu a:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: -3px;
}

.nav-menu a[aria-current="page"],
.nav-menu a.nav-highlight,
.nav-menu a.nav-active {
  border-left-color: var(--color-secondary);
  background-color: rgba(255, 255, 255, 0.15);
  font-weight: 700;
}

@media (min-width: 768px) {
  .nav-menu a[aria-current="page"],
  .nav-menu a.nav-highlight,
  .nav-menu a.nav-active {
    border-left-color: transparent;
    border-bottom-color: var(--color-secondary);
    background-color: rgba(
      118,
      169,
      107,
      0.1
    ); /* Verde IESES com 10% opacidade */
  }
}

/* ============================================
   8. HERO SECTION
   ============================================ */

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #2a2e4f 100%);
  color: var(--color-white);
  padding: var(--space-12) 0;
  text-align: center;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-20) 0;
  }
}

.hero-title {
  color: var(--color-white);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-6);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-4xl);
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: var(--font-size-5xl);
  }
}

.hero-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  max-width: 700px;
  margin: 0 auto var(--space-8);
  opacity: 0.95;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

@media (min-width: 768px) {
  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }
}

/* ============================================
   9. BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px; /* WCAG touch target minimum */
  text-align: center;
}

.btn:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background: #669458;
  border-color: #669458;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

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

.btn-large {
  padding: var(--space-5) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn:active {
  transform: translateY(0);
}

/* ============================================
   10. SECTIONS
   ============================================ */

section {
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  section {
    padding: var(--space-16) 0;
  }
}

@media (min-width: 1024px) {
  section {
    padding: var(--space-20) 0;
  }
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-8);
  color: var(--color-primary);
}

.section-intro {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  max-width: 700px;
  margin: 0 auto var(--space-10);
}

.subsection-title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 3px solid var(--color-secondary);
}

/* ============================================
   11. SERVICES SECTION
   ============================================ */

.services-overview {
  background: var(--color-gray-50);
}

.services-grid {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.service-card {
  background: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border-top: 4px solid var(--color-primary);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.service-card--concursos {
  border-top-color: var(--color-concursos);
}

.service-card--social {
  border-top-color: var(--color-social);
}

.service-card--education {
  border-top-color: var(--color-ensino);
}

.service-icon {
  margin-bottom: var(--space-6);
  display: flex;
  justify-content: flex-start;
}

.service-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
}

.service-description {
  color: var(--color-gray-700);
  margin-bottom: var(--space-6);
  line-height: var(--line-height-relaxed);
}

.service-features {
  list-style: none;
  margin-bottom: var(--space-6);
}

.service-features li {
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  position: relative;
  color: var(--color-gray-700);
}

.service-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: 700;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  padding: var(--space-3) 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.service-link:hover {
  border-bottom-color: var(--color-secondary);
}

/* ============================================
   12. ABOUT SECTION
   ============================================ */

.about-section {
  background: var(--color-white);
}

.about-intro {
  margin-bottom: var(--space-10);
}

.about-intro .lead {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}

.about-intro p {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-700);
  margin-bottom: var(--space-6);
}

.about-structure {
  background: var(--color-gray-50);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-10);
  border-left: 4px solid var(--color-secondary);
}

.about-structure p {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-gray-700);
  margin-bottom: var(--space-4);
}

.about-structure p:last-child {
  margin-bottom: 0;
}

.pillars-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

@media (min-width: 768px) {
  .pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pillar-card {
  background: var(--color-gray-50);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-secondary);
  transition: transform var(--transition-base);
}

.pillar-card:hover {
  transform: translateY(-4px);
}

.pillar-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-lg);
  color: var(--color-primary);
}

.pillar-icon {
  font-size: var(--font-size-2xl);
}

.pillar-card p {
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

/* ============================================
   12A. MISSION, VISION & VALUES SECTION
   ============================================ */

.mission-section {
  background: var(--color-gray-50);
}

.mvv-grid {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .mvv-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.mvv-card {
  background: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border-top: 4px solid var(--color-primary);
  transition: all var(--transition-base);
}

.mvv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.mvv-card--mission {
  border-top-color: var(--color-secondary);
}

.mvv-card--vision {
  border-top-color: var(--color-ensino);
}

.mvv-card--values {
  border-top-color: var(--color-social);
}

.mvv-title {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  text-align: center;
}

.mvv-card p {
  color: var(--color-gray-700);
  line-height: var(--line-height-relaxed);
  text-align: center;
  margin: 0;
}

.values-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  text-align: center;
}

.values-list li {
  font-size: var(--font-size-lg);
  color: var(--color-gray-700);
  font-weight: 600;
  padding: var(--space-3);
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
}

/* ============================================
   13. EXPERTISE SECTION
   ============================================ */

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

.expertise-section .section-title {
  color: var(--color-white);
}

.expertise-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.expertise-item {
  padding: var(--space-6);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.expertise-item h3 {
  color: var(--color-white);
  margin-bottom: var(--space-3);
}

.expertise-item p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
}

/* ============================================
   14. DIFFERENTIALS SECTION
   ============================================ */

.differentials-section {
  background: var(--color-gray-50);
}

.differentials-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-10);
}

@media (min-width: 768px) {
  .differentials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .differentials-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.differential-item {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.differential-item:hover {
  box-shadow: var(--shadow-md);
}

.differential-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-4);
}

.differential-item h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-3);
}

.differential-item p {
  color: var(--color-gray-700);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* ============================================
   15. CTA SECTION
   ============================================ */

.cta-section {
  background: linear-gradient(135deg, var(--color-secondary) 0%, #669458 100%);
  color: var(--color-white);
  text-align: center;
}

.cta-title {
  color: var(--color-white);
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-6);
}

.cta-description {
  font-size: var(--font-size-lg);
  max-width: 700px;
  margin: 0 auto var(--space-8);
  opacity: 0.95;
}

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

.cta-section .btn-primary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-white);
}

/* ============================================
   16. FOOTER
   ============================================ */

.site-footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-12) 0 var(--space-6);
}

.footer-grid {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-section {
  display: flex;
  flex-direction: column;
}

.footer-title {
  font-size: var(--font-size-lg);
  color: var(--color-white);
  margin-bottom: var(--space-4);
  font-weight: 600;
}

.footer-address {
  font-style: normal;
  line-height: var(--line-height-relaxed);
}

.footer-address p {
  margin-bottom: var(--space-3);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  color: var(--color-gray-300);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: inline-block;
  padding: var(--space-2) 0;
}

.footer-links a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--space-6);
  text-align: center;
}

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

.footer-mission {
  font-size: var(--font-size-sm);
  font-style: italic;
  color: var(--color-gray-400);
  margin-bottom: var(--space-3);
}

/* ============================================
   17. UTILITY CLASSES
   ============================================ */

/* Text Alignment */
.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

/* Display */
.hidden {
  display: none;
}
.block {
  display: block;
}
.inline-block {
  display: inline-block;
}
.flex {
  display: flex;
}

/* Spacing */
.mt-4 {
  margin-top: var(--space-4);
}
.mb-4 {
  margin-bottom: var(--space-4);
}
.mt-8 {
  margin-top: var(--space-8);
}
.mb-8 {
  margin-bottom: var(--space-8);
}

/* ============================================
   18. PRINT STYLES
   ============================================ */

@media print {
  .accessibility-controls,
  .mobile-menu-toggle,
  .skip-link,
  .main-nav,
  .hero-cta,
  .cta-section {
    display: none;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 10pt;
    font-weight: normal;
  }
}