:root {
  /* Primary color palette - Complementary scheme */
  --primary-color: #2c53d7;
  --primary-dark: #1c3bb9;
  --primary-light: #4e6dee;
  --primary-bg: #f0f4ff;
  
  /* Complementary/accent colors */
  --accent-color: #ff7b2c;
  --accent-dark: #e06218;
  --accent-light: #ff9453;
  --accent-bg: #fff8f0;
  
  /* Neutral colors */
  --dark: #1a1a2e;
  --dark-gray: #2a2a40;
  --medium-gray: #4a4a65;
  --light-gray: #8a8aa5;
  --very-light: #f5f7ff;
  
  /* Gradient backgrounds */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  --gradient-accent: linear-gradient(135deg, var(--accent-color), var(--accent-dark));
  --gradient-light: linear-gradient(135deg, var(--primary-light), var(--accent-light) 70%);
  
  /* Overlay for images */
  --overlay-dark: rgba(26, 26, 46, 0.7);
  --overlay-light: rgba(240, 244, 255, 0.9);
  
  /* Shadows */
  --shadow-sm: 0 2px 10px rgba(44, 83, 215, 0.1);
  --shadow-md: 0 5px 20px rgba(44, 83, 215, 0.15);
  --shadow-lg: 0 10px 30px rgba(44, 83, 215, 0.2);
  
  /* Animation speeds */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-rounded: 50%;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
}

/* Base styles */
body {
  font-family: 'Open Sans', sans-serif;
  color: var(--dark);
  background-color: var(--very-light);
  line-height: 1.6;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--dark);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1.5rem;
}

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

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

a:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

/* Buttons */
.btn {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  z-index: 1;
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--primary-dark);
  border-color: var(--primary-dark);
  color: white;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 120%;
  height: 0;
  padding-bottom: 120%;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-rounded);
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  z-index: -1;
  transition: transform 0.4s cubic-bezier(0.1, 0, 0.3, 1), opacity 0.4s;
}

.btn-primary:hover::after {
  transform: translate(-50%, -50%) scale(1);
  opacity: 1;
}

.btn-outline-light {
  color: white;
  border: 2px solid white;
  background-color: transparent;
}

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

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

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.25rem;
}

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

.btn-secondary:hover, .btn-secondary:focus {
  background-color: var(--dark-gray);
  border-color: var(--dark-gray);
  color: white;
}

/* Read more links */
.read-more {
  display: inline-block;
  position: relative;
  color: var(--primary-color);
  font-weight: 600;
  padding-right: 25px;
  transition: all var(--transition-normal);
}

.read-more::after {
  content: '→';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  transition: transform var(--transition-normal);
}

.read-more:hover {
  color: var(--primary-dark);
  padding-right: 30px;
}

.read-more:hover::after {
  transform: translate(5px, -50%);
}

/* Section styles */
.section-title {
  position: relative;
  margin-bottom: 3rem;
  font-weight: 700;
  z-index: 1;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -15px;
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  transform: translateX(-50%);
  border-radius: var(--radius-sm);
}

.section-subtitle {
  font-size: 1.2rem;
  color: var(--light-gray);
  text-align: center;
  max-width: 800px;
  margin: 0 auto 3rem;
}

/* Header & Navigation */
.header-section {
  background-color: transparent;
  padding: 1.5rem 0;
  transition: all var(--transition-normal);
  z-index: 1000;
  background-color: #8a8aa5;
}

.header-section.scrolled {
  background-color: var(--dark);
  padding: 1rem 0;
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  color: white !important;
}

.nav-link {
  color: rgba(255, 255, 255, 0.8) !important;
  font-weight: 600;
  padding: 0.5rem 1rem !important;
  transition: all var(--transition-normal);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 50%;
  background-color: white;
  transform: translateX(-50%);
  transition: width var(--transition-normal);
}

.nav-link:hover, .nav-link.active {
  color: white !important;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 80%;
}

/* Hero Section */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: white;
  overflow: hidden;
}

.hero-section .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(26, 26, 46, 0.8), rgba(26, 26, 46, 0.5));
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  animation: fadeInUp 1s ease-out 0.3s;
  animation-fill-mode: both;
}

.hero-buttons {
  animation: fadeInUp 1s ease-out 0.6s;
  animation-fill-mode: both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Vision Section */
.vision-section {
  padding: var(--space-xl) 0;
  background-color: white;
}

.vision-image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: perspective(1000px) rotateY(5deg);
  transition: all var(--transition-normal);
}

.vision-image-container:hover {
  transform: perspective(1000px) rotateY(0);
}

.vision-image-container img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.vision-content {
  padding: var(--space-md);
}

.vision-content h3 {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

/* Innovation Section */
.innovation-section {
  padding: var(--space-xl) 0;
  background-color: var(--primary-bg);
  position: relative;
  overflow: hidden;
}

.innovation-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: var(--gradient-light);
  border-radius: var(--radius-rounded);
  opacity: 0.1;
  z-index: 0;
}

.innovation-image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

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

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

.innovation-content {
  padding: var(--space-md);
}

.innovation-content h3 {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

.innovation-blocks {
  margin-top: var(--space-xl);
}

.innovation-block {
  background-color: white;
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  height: 100%;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.innovation-block:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.innovation-icon {
  width: 80px;
  height: 80px;
  margin-bottom: var(--space-md);
  border-radius: var(--radius-rounded);
  overflow: hidden;
}

.innovation-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-rounded);
}

.innovation-block h4 {
  margin-bottom: var(--space-sm);
  color: var(--primary-color);
}

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

.research-image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

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

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

.research-content {
  padding: var(--space-md);
}

.research-content h3 {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

/* Timeline Section */
.timeline-section {
  margin-top: var(--space-xl);
}

.timeline {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.timeline::after {
  content: '';
  position: absolute;
  width: 4px;
  background-color: var(--primary-light);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -2px;
}

.timeline-item {
  position: relative;
  padding: 10px 40px;
  width: 50%;
}

.timeline-item:nth-child(odd) {
  left: 0;
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  right: -10px;
  background-color: var(--primary-color);
  border: 4px solid var(--primary-light);
  border-radius: var(--radius-rounded);
  z-index: 1;
  top: 15px;
}

.timeline-item:nth-child(even) .timeline-dot {
  left: -10px;
}

.timeline-content {
  padding: var(--space-md);
  background-color: white;
  position: relative;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.timeline-content h4 {
  color: var(--primary-color);
}

/* Team Section */
.team-section {
  padding: var(--space-xl) 0;
  background-color: var(--primary-bg);
}

.team-card {
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.team-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  width: 100%;
  height: 350px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

.card-content {
  padding: var(--space-md);
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card-content h4 {
  color: var(--primary-color);
  margin-top: var(--space-sm);
  margin-bottom: var(--space-xs);
}

.position {
  color: var(--light-gray);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

/* Insights Section */
.insights-section {
  padding: var(--space-xl) 0;
  background-color: white;
}

.insights-image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

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

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

.insights-content {
  padding: var(--space-md);
}

.insights-content h3 {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

.insight-card {
  background-color: white;
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  height: 100%;
  transition: all var(--transition-normal);
}

.insight-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.insight-number {
  display: inline-block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-light);
  margin-right: var(--space-sm);
}

/* History Section */
.history-section {
  padding: var(--space-xl) 0;
  background-color: var(--primary-bg);
  position: relative;
  overflow: hidden;
}

.history-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  background: var(--gradient-light);
  border-radius: var(--radius-rounded);
  opacity: 0.1;
  z-index: 0;
}

.history-image-container {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

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

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

.history-content {
  padding: var(--space-md);
}

.history-content h3 {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

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

.resource-card {
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.resource-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.resource-card .card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

.resource-card .card-content {
  padding: var(--space-md);
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.resource-card .card-content h4 {
  color: var(--primary-color);
  margin-bottom: var(--space-sm);
}

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

.contact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('image/pattern-bg.jpg') repeat;
  opacity: 0.05;
  z-index: 0;
}

.contact-section .container {
  position: relative;
  z-index: 1;
}

.contact-info {
  padding: var(--space-md);
  height: 100%;
}

.contact-info h3 {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

.contact-details {
  margin-top: var(--space-lg);
}

.contact-item h5 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.contact-form-container {
  background-color: white;
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  height: 100%;
}

.contact-form-container h3 {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

.form-group label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--dark-gray);
}

.form-control {
  border: 2px solid var(--light-gray);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  transition: all var(--transition-normal);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(44, 83, 215, 0.25);
}

.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-top: var(--space-lg);
}

.map-container img {
  display: block;
  width: 100%;
  height: 400px;
  object-fit: cover;
}

/* Footer */
.footer-section {
  padding: var(--space-xl) 0 var(--space-md);
  background-color: var(--dark);
  color: white;
}

.footer-title {
  color: white;
  margin-bottom: var(--space-md);
  font-weight: 700;
}

.footer-description {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-md);
}

.social-links {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.social-link {
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-normal);
  font-weight: 600;
  position: relative;
  overflow: hidden;
}

.social-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: width var(--transition-normal);
}

.social-link:hover {
  color: white;
}

.social-link:hover::after {
  width: 100%;
}

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

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-normal);
}

.footer-links a:hover {
  color: white;
  padding-left: 5px;
}

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

.copyright {
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

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

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

.success-icon {
  font-size: 5rem;
  color: var(--accent-color);
  margin-bottom: var(--space-md);
}

.success-title {
  color: var(--primary-color);
  margin-bottom: var(--space-md);
}

/* Privacy & Terms Pages */
.content-page {
  padding-top: 100px;
  padding-bottom: var(--space-xl);
}

.content-page .container {
  background-color: white;
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.content-title {
  color: var(--primary-color);
  margin-bottom: var(--space-lg);
}

/* Modal Styling */
.modal-content {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  background-color: var(--primary-color);
  color: white;
  border-bottom: none;
}

.modal-title {
  font-weight: 700;
}

.modal-body {
  padding: var(--space-lg);
}

.modal-footer {
  border-top: none;
  padding: var(--space-md) var(--space-lg);
}

.btn-close {
  color: white;
  filter: brightness(0) invert(1);
}

/* Media Queries */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
  }
  
  .timeline::after {
    left: 31px;
  }
  
  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  
  .timeline-item:nth-child(even) {
    left: 0%;
  }
  
  .timeline-dot {
    left: 21px;
    right: auto;
  }
  
  .timeline-item:nth-child(even) .timeline-dot {
    left: 21px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  h3 {
    font-size: 1.75rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.125rem;
  }
  
  .contact-form-container {
    padding: var(--space-md);
  }
  
  .hero-section {
    min-height: 600px;
  }
}

@media (max-width: 576px) {
  .btn {
    padding: 0.6rem 1.2rem;
  }
  
  .btn-lg {
    padding: 0.8rem 1.6rem;
    font-size: 1.1rem;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  .contact-item {
    margin-bottom: var(--space-md);
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    transform: translateX(-100px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(100px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn 1s ease-out;
}

.slide-in-right {
  animation: slideInRight 1s ease-out;
}

.slide-in-left {
  animation: slideInLeft 1s ease-out;
}

.slide-in-up {
  animation: slideInUp 1s ease-out;
}