:root {
  /* Brutalist Design System with Biomorphic elements */
  /* Complementary color scheme */
  --primary-color: #ff5722;
  --primary-dark: #e64a19;
  --primary-light: #ffab91;
  --secondary-color: #2196f3;
  --secondary-dark: #1976d2;
  --secondary-light: #bbdefb;
  
  /* Additional colors for brutalist design */
  --contrast-color: #303030;
  --light-color: #f5f5f5;
  --dark-color: #212121;
  --accent-color: #8bc34a;
  --error-color: #f44336;
  --success-color: #4caf50;
  
  /* Biomorphic soft colors */
  --bio-soft-1: #e1f5fe;
  --bio-soft-2: #b3e5fc;
  --bio-soft-3: #81d4fa;
  
  /* Typography */
  --heading-font: 'Montserrat', sans-serif;
  --body-font: 'Merriweather', serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 5rem;
  
  /* Border radius for biomorphic shapes */
  --border-radius-sm: 8px;
  --border-radius-md: 16px;
  --border-radius-lg: 24px;
  --border-radius-xl: 32px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.14);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.16);
  
  /* Container width */
  --container-width: 1200px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3.5rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-md);
}

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

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

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

ul {
  list-style-position: inside;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Section common styles */
section {
  padding: var(--spacing-xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
  padding-bottom: var(--spacing-md);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: var(--primary-color);
  border-radius: var(--border-radius-sm);
}

/* Buttons - GLOBAL */
.btn, button, input[type='submit'] {
  display: inline-block;
  font-family: var(--heading-font);
  font-weight: 700;
  text-align: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* Header and Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--dark-color);
  box-shadow: var(--shadow-md);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.logo h1 {
  color: var(--primary-color);
  font-size: 1.8rem;
  margin: 0;
}

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

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

.desktop-nav ul li a {
  color: var(--light-color);
  font-family: var(--heading-font);
  font-weight: 600;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.desktop-nav ul li a:hover {
  color: var(--primary-color);
}

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

.desktop-nav ul li 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;
  height: 3px;
  background-color: var(--light-color);
  border-radius: 3px;
  transition: all var(--transition-medium);
}

.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--dark-color);
  padding: var(--spacing-md) 0;
  box-shadow: var(--shadow-md);
}

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

.mobile-nav ul li {
  padding: var(--spacing-sm) var(--spacing-lg);
}

.mobile-nav ul li a {
  color: var(--light-color);
  font-family: var(--heading-font);
  font-weight: 600;
  display: block;
}

.mobile-nav.active {
  display: block;
}

/* Hero section */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  color: white;
  margin-top: 0;
  padding-top: 80px;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  z-index: 2;
}

.hero-content h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-lg);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xl);
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

/* Cards common styles */
.card {
  background: white;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

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

.card-image {
  width: 100%;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.card-image img {
  width: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  margin: 0 auto;
}

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

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

.price {
  font-family: var(--heading-font);
  font-weight: 700;
  color: var(--primary-color);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

/* Courses section */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.progress-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 5px;
  background-color: var(--primary-color);
  transition: width var(--transition-slow);
}

.card:hover .progress-bar {
  animation: progress-pulse 1.5s infinite alternate;
}

@keyframes progress-pulse {
  0% {
    opacity: 0.7;
  }
  100% {
    opacity: 1;
  }
}

/* Gallery section */
.gallery {
  background-color: var(--bio-soft-1);
  padding: var(--spacing-xl) 0;
  position: relative;
}

.gallery::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(var(--bio-soft-2) 15%, transparent 15%),
                    radial-gradient(var(--bio-soft-2) 15%, transparent 15%);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  opacity: 0.3;
  z-index: 0;
}

.gallery-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
  position: relative;
  z-index: 1;
}

.gallery-item {
  text-align: center;
  transition: transform var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.gallery-item:hover {
  transform: translateY(-5px);
}

.gallery-item .image-container {
  width: 100%;
  height: 300px;
  overflow: hidden;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item p {
  font-family: var(--heading-font);
  font-weight: 600;
  color: var(--contrast-color);
  margin-top: var(--spacing-sm);
}

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

.research-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xl);
}

.research-image {
  flex: 1 1 400px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.research-text {
  flex: 1 1 500px;
}

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

/* Projects section */
.projects {
  background-color: var(--bio-soft-1);
  padding: var(--spacing-xl) 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

/* Resources section */
.resources {
  padding: var(--spacing-xl) 0;
  background-color: white;
}

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

.resource-item {
  padding: var(--spacing-lg);
  background-color: var(--bio-soft-1);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium);
}

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

.resource-item h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.resource-item ul {
  list-style: none;
}

.resource-item ul li {
  margin-bottom: var(--spacing-sm);
}

.resource-item ul li a {
  color: var(--secondary-color);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.resource-item ul li a:hover {
  color: var(--secondary-dark);
  transform: translateX(5px);
}

/* Customer Stories section */
.customer-stories {
  background-color: var(--bio-soft-1);
  padding: var(--spacing-xl) 0;
}

.stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.customer-title {
  color: var(--secondary-color);
  font-style: italic;
  margin-bottom: var(--spacing-md);
}

/* Blog section */
.blog {
  padding: var(--spacing-xl) 0;
  background-color: white;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.blog-grid .card-content {
  text-align: left;
  align-items: flex-start;
}

/* Events section */
.events {
  background-color: var(--bio-soft-1);
  padding: var(--spacing-xl) 0;
}

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

/* Sustainability section */
.sustainability {
  padding: var(--spacing-xl) 0;
  background-color: white;
}

.sustainability-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-xl);
}

.sustainability-image {
  flex: 1 1 400px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.sustainability-text {
  flex: 1 1 500px;
}

/* Contact section */
.contact {
  padding: var(--spacing-xl) 0;
  background-color: var(--bio-soft-1);
}

.contact-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.contact-form {
  flex: 2;
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

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

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-family: var(--heading-font);
  font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid #ddd;
  border-radius: var(--border-radius-sm);
  font-family: var(--body-font);
  transition: border-color var(--transition-fast);
}

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

.form-checkbox {
  display: flex;
  align-items: center;
}

.form-checkbox input {
  width: auto;
  margin-right: var(--spacing-sm);
}

.form-checkbox label {
  margin: 0;
}

.contact-info {
  flex: 1;
  background-color: var(--dark-color);
  color: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
}

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

.contact-info p {
  margin-bottom: var(--spacing-md);
}

.social-links h4 {
  margin-bottom: var(--spacing-md);
  color: var(--light-color);
}

.social-links ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-md);
}

.social-links ul li a {
  color: var(--light-color);
  transition: color var(--transition-fast);
}

.social-links ul li a:hover {
  color: var(--primary-color);
}

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

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

.footer-logo h2 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.footer h3 {
  color: var(--light-color);
  margin-bottom: var(--spacing-md);
  font-size: 1.2rem;
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: var(--spacing-sm);
}

.footer ul li a {
  color: var(--light-color);
  opacity: 0.8;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.footer ul li a:hover {
  opacity: 1;
  color: var(--primary-color);
  transform: translateX(5px);
}

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

/* Success page */
.success-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
}

.success-content {
  max-width: 600px;
}

/* Privacy and Terms pages */
.privacy-page, .terms-page {
  padding-top: 100px;
  min-height: 100vh;
}

.privacy-content, .terms-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
}

/* Utilities */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* Animations */
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

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

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

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

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

/* Responsive styles */
@media (max-width: 992px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2.2rem; }
  h3 { font-size: 1.5rem; }
  
  .hero-content h1 { font-size: 3rem; }
  .hero-content p { font-size: 1.2rem; }
  
  .desktop-nav { display: none; }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .research-content, .sustainability-content {
    flex-direction: column;
  }
  
  .research-image, .sustainability-image {
    margin-bottom: var(--spacing-lg);
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  
  .hero-content h1 { font-size: 2.5rem; }
  
  .contact-container {
    flex-direction: column;
  }
  
  .section {
    padding: var(--spacing-lg) 0;
  }
  
  .card-content {
    padding: var(--spacing-md);
  }
}

@media (max-width: 576px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.8rem; }
  
  .hero-content h1 { font-size: 2rem; }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}