:root {
  /* Core Brand Colors */
  --primary-color: #0047AB;
  --primary-dark: #00337D;
  --primary-light: #4785E5;
  --secondary-color: #FFD700;
  --secondary-dark: #E5C200;
  --secondary-light: #FFEC80;
  
  /* Neutral Colors */
  --neutral-900: #1A1A2E;
  --neutral-800: #16213E;
  --neutral-700: #0F3460;
  --neutral-600: #406E8E;
  --neutral-500: #6B7F99;
  --neutral-400: #8D9DAF;
  --neutral-300: #BCC6D0;
  --neutral-200: #E1E5EA;
  --neutral-100: #F0F2F5;
  --neutral-50: #F8F9FA;
  
  /* Gradients */
  --gradient-blue: linear-gradient(135deg, var(--primary-color), #2563EB);
  --gradient-blue-dark: linear-gradient(135deg, var(--primary-dark), #1E40AF);
  --gradient-blue-light: linear-gradient(135deg, var(--primary-light), #60A5FA);
  --gradient-gold: linear-gradient(135deg, var(--secondary-color), #FFC107);
  --gradient-hero: linear-gradient(135deg, rgba(0, 71, 171, 0.9), rgba(37, 99, 235, 0.8));
  --gradient-card: linear-gradient(135deg, #ffffff, #f0f2f5);
  
  /* Shadows */
  --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 15px 50px rgba(0, 0, 0, 0.2);
  
  /* Neomorphism Shadows */
  --nm-shadow-inset: inset 5px 5px 10px rgba(0, 0, 0, 0.1), 
                     inset -5px -5px 10px rgba(255, 255, 255, 0.8);
  --nm-shadow: 5px 5px 10px rgba(0, 0, 0, 0.1), 
              -5px -5px 10px rgba(255, 255, 255, 0.8);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-xxl: 32px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Fonts */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Source Sans Pro', sans-serif;
}

/* Base Styles */
body {
  font-family: var(--font-body);
  color: var(--neutral-800);
  line-height: 1.6;
  overflow-x: hidden;
  background-color: var(--neutral-50);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--neutral-900);
}

p {
  margin-bottom: 1rem;
}

section {
  position: relative;
  overflow: hidden;
}

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

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

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

/* Button Styles */
.btn,
button,
input[type="submit"] {
  display: inline-block;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 2px solid transparent;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.btn:hover,
button:hover,
input[type="submit"]:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.btn:active,
button:active,
input[type="submit"]:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-sm);
}

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

.btn-primary:hover {
  background: var(--gradient-blue-dark);
}

.btn-secondary {
  background: var(--gradient-gold);
  color: var(--neutral-800);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--secondary-dark), #FFA000);
}

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

.btn-white:hover {
  background: var(--neutral-100);
}

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

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

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

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

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

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

/* Form Styles */
input:not([type="submit"]),
select,
textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--neutral-800);
  background-color: white;
  background-clip: padding-box;
  border: 2px solid var(--neutral-300);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

input:not([type="submit"]):focus,
select:focus,
textarea:focus {
  border-color: var(--primary-light);
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(0, 71, 171, 0.25);
}

label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: block;
}

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

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

.card-image {
  width: 100%;
  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);
}

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

.card-content {
  padding: 1.5rem;
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.image-container {
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

/* Header */
header {
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
  z-index: 1000;
}

header.scrolled {
  box-shadow: var(--shadow-lg);
  background: var(--gradient-blue);
}

.nav-link {
  position: relative;
  padding: 0.5rem 1rem;
  margin: 0 0.25rem;
  font-weight: 600;
  color: white;
  transition: color var(--transition-normal);
}

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

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

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

/* Mobile Menu */
#mobile-menu-button {
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 20;
}

#mobile-menu {
  border-radius: var(--radius-lg);
  margin-top: 1rem;
  box-shadow: var(--shadow-lg);
}

/* Hero Section */
#hero {
  position: relative;
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  color: white;
}

#hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.7), rgba(0,0,0,0.5));
  z-index: 1;
}

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

#hero h1 {
  color: white;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

#hero p {
  color: white;
  text-shadow: 0 2px 5px rgba(0,0,0,0.2);
  font-size: 1.25rem;
  max-width: 800px;
  margin: 0 auto 2rem;
}

/* Vision Section */
#vision {
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  padding: 5rem 0;
}

#vision .card {
  height: 100%;
}

/* Sustainability Section */
#sustainability {
  background: linear-gradient(135deg, #f0f7ff, #e6f7ef);
  padding: 5rem 0;
}

/* Methodology Section */
#methodology {
  background: linear-gradient(135deg, #f8f9fa, #e0f2fe);
  padding: 5rem 0;
}

#methodology .card {
  height: 100%;
  transition: transform var(--transition-normal);
}

#methodology .card:hover {
  transform: translateY(-10px);
}

/* Projects Section */
#projects {
  background: linear-gradient(135deg, #e0f2fe, #e0e7ff);
  padding: 5rem 0;
}

#projects .card {
  position: relative;
  overflow: hidden;
}

#projects .card-image {
  height: 300px;
  position: relative;
}

#projects .card-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.7));
  z-index: 1;
}

/* Resources Section */
#resources {
  background: linear-gradient(135deg, #f8f9fa, #e9ecef);
  padding: 5rem 0;
}

#resources .card {
  text-align: center;
  padding: 2rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

#resources .card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

/* Insights Section */
#insights {
  background: linear-gradient(135deg, #e0e7ff, #ede9fe);
  padding: 5rem 0;
}

#insights .card-image {
  height: 250px;
  position: relative;
}

/* Webinars Section */
#webinars {
  background: linear-gradient(135deg, #f8f9fa, #e0f2fe);
  padding: 5rem 0;
}

#webinars .card {
  height: 100%;
}

#webinars .card-image {
  height: 200px;
  position: relative;
}

/* Community Section */
#community {
  background: linear-gradient(135deg, #e0f2fe, #e0f7ea);
  padding: 5rem 0;
}

/* Contact Section */
#contact {
  background: linear-gradient(135deg, #f8f9fa, #e0f2fe);
  padding: 5rem 0;
}

#contact form {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

/* Footer */
footer {
  background: var(--gradient-blue-dark);
  color: white;
  padding: 4rem 0 2rem;
}

footer h3 {
  color: white;
  margin-bottom: 1.5rem;
}

footer p {
  color: var(--neutral-200);
}

footer a {
  color: white;
  transition: color var(--transition-normal);
}

footer a:hover {
  color: var(--secondary-color);
  text-decoration: none;
}

footer .social-links {
  display: flex;
  gap: 1rem;
}

footer .social-links a {
  font-weight: 600;
  position: relative;
}

footer .social-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--secondary-color);
  transition: width var(--transition-normal);
}

footer .social-links a:hover::after {
  width: 100%;
}

/* Cookie Consent */
#cookie-consent {
  background: rgba(23, 25, 35, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.2);
}

#cookie-consent p {
  color: var(--neutral-300);
}

#accept-cookies {
  background: var(--secondary-color);
  color: var(--neutral-900);
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

#accept-cookies:hover {
  background: var(--secondary-light);
  transform: translateY(-2px);
}

/* Additional Pages */
.page-content {
  padding-top: 100px;
  min-height: 80vh;
}

.privacy-content,
.terms-content {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3rem;
}

/* Success Page */
.success-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: linear-gradient(135deg, #f8f9fa, #e0f2fe);
  padding: 2rem;
}

.success-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 100%;
  animation: fadeInUp 1s ease-out;
}

.success-icon {
  font-size: 4rem;
  color: #4CAF50;
  margin-bottom: 1.5rem;
}

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

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

/* 3D Effects */
.card-3d {
  transition: transform 0.5s ease;
  transform-style: preserve-3d;
}

.card-3d:hover {
  transform: rotateY(5deg) rotateX(5deg) scale(1.02);
}

/* Parallax Effects */
.parallax {
  position: relative;
  overflow: hidden;
}

.parallax-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  background-size: cover;
  background-position: center;
  z-index: 1;
}

/* Media Queries */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .card-image {
    height: 200px;
  }
  
  .hide-mobile {
    display: none;
  }
}

@media (max-width: 576px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }
  
  #hero p {
    font-size: 1rem;
  }
  
  .card-image {
    height: 180px;
  }
}

/* Utility Classes */
.text-gradient {
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.shadow-hover {
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.bg-blur {
  backdrop-filter: blur(10px);
}

.neomorphism {
  background: #f0f2f5;
  box-shadow: var(--nm-shadow);
  border-radius: var(--radius-lg);
}

.neomorphism-inset {
  background: #f0f2f5;
  box-shadow: var(--nm-shadow-inset);
  border-radius: var(--radius-lg);
}

.text-underline-animated {
  position: relative;
}

.text-underline-animated::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background-color: var(--primary-color);
  transition: width var(--transition-normal);
}

.text-underline-animated:hover::after {
  width: 100%;
}