/* Base Variables */
:root {
  /* Primary Colors */
  --primary-color: #0079c1;
  --primary-dark: #005a8f;
  --primary-light: #60a5db;
  
  /* Secondary Colors */
  --secondary-color: #ff7143;
  --secondary-dark: #e45c2e;
  --secondary-light: #ff9a75;
  
  /* Accent Colors */
  --accent-color: #23d5ab;
  --accent-dark: #19a985;
  --accent-light: #59e8c7;
  
  /* Neutral Colors */
  --text-dark: #222222;
  --text-medium: #444444;
  --text-light: #ffffff;
  --background-light: #f8f9fa;
  --background-medium: #e9ecef;
  --background-dark: #343a40;
  
  /* Utility Colors */
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  
  /* Shadows */
  --shadow-small: 0 2px 5px rgba(0, 0, 0, 0.1);
  --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-large: 0 10px 20px rgba(0, 0, 0, 0.15);
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  
  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-full: 999px;
  
  /* Typography */
  --font-heading: 'Raleway', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Container Width */
  --container-width: 1200px;
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--text-medium);
  background-color: var(--background-light);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-dark);
  margin-bottom: var(--space-sm);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-md);
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

ul, ol {
  padding-left: var(--space-md);
  margin-bottom: var(--space-sm);
}

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

button, .btn, input[type="submit"] {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-md);
  text-align: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-medium);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--text-light);
}

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  color: var(--text-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

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

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-md);
  position: relative;
  z-index: 1;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background-color: var(--secondary-color);
  margin: var(--space-xs) auto 0;
  border-radius: var(--border-radius-full);
}

.section-subtitle {
  text-align: center;
  font-size: var(--font-size-lg);
  color: var(--text-medium);
  margin-bottom: var(--space-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Read More Links */
.read-more {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  color: var(--primary-color);
  transition: all var(--transition-fast);
}

.read-more::after {
  content: '→';
  margin-left: 0.5rem;
  transition: transform var(--transition-fast);
}

.read-more:hover {
  color: var(--primary-dark);
}

.read-more:hover::after {
  transform: translateX(4px);
}

/* Card Styles */
.card {
  background-color: white;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-medium);
  overflow: hidden;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-large);
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  text-align: center;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-content {
  padding: var(--space-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  width: 100%;
}

.card-content h3 {
  margin-top: 0;
  margin-bottom: var(--space-xs);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-small);
  z-index: 1000;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-color);
}

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

.logo h1 {
  font-size: var(--font-size-2xl);
  margin: 0;
}

.desktop-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.desktop-nav li {
  margin-left: var(--space-md);
}

.desktop-nav a {
  color: var(--text-dark);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.desktop-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-medium);
}

.desktop-nav a:hover::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--text-dark);
  border-radius: var(--border-radius-full);
  transition: all var(--transition-medium);
}

.mobile-menu-toggle.active span:first-child {
  transform: translateY(9px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:last-child {
  transform: translateY(-9px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  background-color: white;
  padding: var(--space-md) 0;
  box-shadow: var(--shadow-medium);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-medium);
  z-index: 999;
}

.mobile-nav.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.mobile-nav li {
  padding: 0.5rem var(--space-md);
}

.mobile-nav a {
  color: var(--text-dark);
  font-weight: 500;
  display: block;
  padding: 0.5rem 0;
}

/* Hero Section */
.hero {
  position: relative;
  padding: var(--space-xl) 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--text-light);
  margin-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(0,0,0,0.7), rgba(0,0,0,0.4));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: var(--space-lg) 0;
}

.hero-content h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-sm);
  color: var(--text-light);
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
  animation: fadeInUp 1s ease-out;
}

.hero-content p {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-md);
  color: var(--text-light);
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
  animation: fadeInUp 1s ease-out 0.2s;
  animation-fill-mode: both;
}

.hero-buttons {
  display: flex;
  gap: var(--space-sm);
  animation: fadeInUp 1s ease-out 0.4s;
  animation-fill-mode: both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Services Section */
.services {
  padding: var(--space-xl) 0;
  background-color: var(--background-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-md);
}

/* Case Studies Section */
.case-studies {
  padding: var(--space-xl) 0;
  background-color: white;
}

.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-lg);
}

/* Features Section */
.features {
  padding: var(--space-xl) 0;
  background-color: var(--background-light);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.feature-item {
  text-align: center;
  padding: var(--space-md);
  border-radius: var(--border-radius-md);
  transition: transform var(--transition-medium);
  background-color: white;
  box-shadow: var(--shadow-small);
}

.feature-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-medium);
}

.feature-icon {
  margin: 0 auto var(--space-sm);
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Mission Section */
.mission {
  padding: var(--space-xl) 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  color: var(--text-light);
}

.mission::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(0,0,0,0.8), rgba(0,0,0,0.6));
}

.mission-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
}

.mission .section-title {
  color: var(--text-light);
}

.mission-text {
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-lg);
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.mission-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

.value-item {
  padding: var(--space-md);
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-md);
  text-align: center;
}

.value-item h3 {
  color: var(--text-light);
  margin-bottom: var(--space-xs);
}

.value-item p {
  color: var(--text-light);
  opacity: 0.9;
}

/* Research Section */
.research {
  padding: var(--space-xl) 0;
  background-color: white;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-lg);
}

/* Resources Section */
.resources {
  padding: var(--space-xl) 0;
  background-color: var(--background-light);
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
}

.resource-item {
  padding: var(--space-md);
  background-color: white;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-small);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.resource-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.resource-item h3 {
  margin-top: 0;
  margin-bottom: var(--space-xs);
}

.resource-item a {
  color: var(--primary-color);
  font-weight: 600;
}

.resource-item a:hover {
  color: var(--primary-dark);
}

/* Events Section */
.events {
  padding: var(--space-xl) 0;
  background-color: white;
}

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--space-lg);
}

.event-date {
  color: var(--secondary-color);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.event-location {
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--text-medium);
}

/* Accolades Section */
.accolades {
  padding: var(--space-xl) 0;
  background-color: var(--background-light);
}

.testimonials-slider {
  margin-bottom: var(--space-xl);
}

.testimonial-item {
  background-color: white;
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-medium);
  margin-bottom: var(--space-md);
}

.testimonial-content p {
  font-size: var(--font-size-lg);
  font-style: italic;
  margin-bottom: var(--space-md);
  position: relative;
  padding-left: var(--space-md);
}

.testimonial-content p::before {
  content: '"';
  font-size: 4rem;
  color: var(--primary-light);
  position: absolute;
  top: -20px;
  left: -10px;
  opacity: 0.3;
}

.testimonial-author {
  display: flex;
  align-items: center;
}

.testimonial-author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin-right: var(--space-sm);
  object-fit: cover;
}

.author-info h4 {
  margin: 0;
  font-size: var(--font-size-md);
}

.author-info p {
  margin: 0;
  color: var(--text-medium);
}

.awards {
  text-align: center;
}

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

.awards-grid {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.award-item {
  text-align: center;
}

.award-item img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin: 0 auto var(--space-sm);
}

.award-item p {
  font-weight: 500;
}

/* Contact Section */
.contact {
  padding: var(--space-xl) 0;
  background-color: white;
}

.contact-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.contact-info {
  padding-right: var(--space-lg);
}

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

.info-item h4 {
  margin-bottom: var(--space-xs);
  color: var(--primary-color);
}

.contact-form {
  background-color: var(--background-light);
  padding: var(--space-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-medium);
}

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

.form-group.full-width {
  grid-column: 1 / -1;
}

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

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

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-body);
  transition: border-color var(--transition-fast);
}

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

.checkbox-container {
  display: flex;
  align-items: center;
  position: relative;
  padding-left: 35px;
  cursor: pointer;
  user-select: none;
}

.checkbox-container input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  position: absolute;
  top: 0;
  left: 0;
  height: 25px;
  width: 25px;
  background-color: #eee;
  border-radius: var(--border-radius-sm);
}

.checkbox-container:hover input ~ .checkmark {
  background-color: #ccc;
}

.checkbox-container input:checked ~ .checkmark {
  background-color: var(--primary-color);
}

.checkmark:after {
  content: "";
  position: absolute;
  display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
  display: block;
}

.checkbox-container .checkmark:after {
  left: 9px;
  top: 5px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 3px 3px 0;
  transform: rotate(45deg);
}

/* Footer */
.footer {
  background-color: var(--background-dark);
  color: var(--text-light);
  padding: var(--space-lg) 0 var(--space-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-logo h2 {
  color: var(--text-light);
  margin-bottom: var(--space-sm);
}

.footer-logo p {
  opacity: 0.8;
}

.footer h3 {
  color: var(--text-light);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-md);
  position: relative;
}

.footer h3::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--secondary-color);
  margin-top: var(--space-xs);
}

.footer ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer a {
  color: var(--text-light);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer a:hover {
  opacity: 1;
  color: var(--secondary-light);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  opacity: 0.6;
  margin-bottom: var(--space-xs);
}

/* Cookie Popup */
.cookie-popup {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  color: white;
  z-index: 9999;
  padding: var(--space-md);
}

.cookie-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.cookie-content p {
  margin: 0;
  flex: 1;
}

.btn-cookie {
  background-color: var(--secondary-color);
  color: white;
  border: none;
  padding: 0.5rem 1.5rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  font-weight: 600;
  transition: background-color var(--transition-fast);
}

.btn-cookie:hover {
  background-color: var(--secondary-dark);
}

/* Success Page */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background-color: var(--background-light);
}

.success-content {
  max-width: 600px;
  background-color: white;
  padding: var(--space-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-medium);
}

.success-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-md);
  color: var(--success-color);
}

.success-content h1 {
  margin-bottom: var(--space-md);
}

.success-content p {
  margin-bottom: var(--space-lg);
}

/* Static Pages (Privacy, Terms) */
.static-page {
  padding-top: 150px;
  padding-bottom: var(--space-xl);
}

.static-page .container {
  max-width: 800px;
}

.static-page h1 {
  margin-bottom: var(--space-lg);
}

.static-page h2 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-md);
}

.static-page p, 
.static-page ul {
  margin-bottom: var(--space-md);
}

/* Responsive Styles */
@media (max-width: 1024px) {
  :root {
    --font-size-4xl: 2.5rem;
    --font-size-3xl: 2rem;
    --space-xl: 6rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.25rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --space-xl: 4rem;
    --space-lg: 3rem;
  }
  
  .desktop-nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-content {
    padding: var(--space-md) 0;
    text-align: center;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .mission-values {
    grid-template-columns: 1fr;
  }
  
  .contact-container,
  .contact-form form {
    grid-template-columns: 1fr;
  }
  
  .contact-info {
    padding-right: 0;
  }
  
  .awards-grid {
    gap: var(--space-md);
  }
  
  .testimonial-content p {
    font-size: var(--font-size-md);
  }
  
  .cookie-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl: 1.125rem;
    --space-lg: 2rem;
    --space-md: 1.5rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
    margin-bottom: var(--space-xs);
  }
  
  .static-page {
    padding-top: 120px;
  }
}