:root {
  /* Primary colors */
  --color-primary-light: #8fd9a8;
  --color-primary: #4caf50;
  --color-primary-dark: #2e7d32;
  
  /* Secondary colors */
  --color-secondary-light: #b3e0ff;
  --color-secondary: #64b5f6;
  --color-secondary-dark: #1976d2;
  
  /* Accent colors */
  --color-accent-light: #ffccbc;
  --color-accent: #ff8a65;
  --color-accent-dark: #e64a19;
  
  /* Neutral colors */
  --color-white: #ffffff;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #eeeeee;
  --color-gray-300: #e0e0e0;
  --color-gray-400: #bdbdbd;
  --color-gray-500: #9e9e9e;
  --color-gray-600: #757575;
  --color-gray-700: #616161;
  --color-gray-800: #424242;
  --color-gray-900: #212121;
  --color-black: #000000;
  
  /* Text colors */
  --color-text-primary: #333333;
  --color-text-secondary: #666666;
  --color-text-tertiary: #999999;
  --color-text-light: var(--color-white);
  
  /* Background colors */
  --color-bg-light: #f9fbf9;
  --color-bg-medium: #e8f5e9;
  --color-bg-dark: #c8e6c9;
  
  /* UI element colors */
  --color-success: #66bb6a;
  --color-error: #f44336;
  --color-warning: #ffa726;
  --color-info: #29b6f6;
  
  /* Animation durations */
  --transition-fast: 0.2s;
  --transition-medium: 0.3s;
  --transition-slow: 0.5s;
  
  /* Border radius */
  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 16px;
  --radius-circle: 50%;
  
  /* Shadows */
  --shadow-small: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-large: 0 8px 16px rgba(0, 0, 0, 0.1);
  --shadow-focus: 0 0 0 3px rgba(76, 175, 80, 0.3);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Font sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Container widths */
  --container-width: 1200px;
}

/* Base Elements */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Nunito', sans-serif;
  color: var(--color-text-primary);
  line-height: 1.6;
  background-color: var(--color-bg-light);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Oswald', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

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

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

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

/* Buttons */
.btn-primary, .btn-secondary {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-medium);
  font-weight: 600;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all var(--transition-medium);
  cursor: pointer;
  box-shadow: var(--shadow-small);
  border: none;
}

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

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

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

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

/* Forms */
input, textarea, select {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-medium);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-focus);
}

/* Layout components */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.section-title {
  font-size: var(--font-size-3xl);
  color: var(--color-primary-dark);
  text-align: center;
  margin-bottom: var(--space-xl);
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 80px;
  height: 3px;
  background-color: var(--color-primary);
  margin: var(--space-sm) auto 0;
}

/* Header */
header {
  transition: background-color var(--transition-medium), box-shadow var(--transition-medium);
}

header.scrolled {
  background-color: var(--color-white);
  box-shadow: var(--shadow-medium);
}

.nav-link {
  color: var(--color-text-primary);
  font-weight: 600;
  padding: var(--space-sm) var(--space-md);
  transition: color var(--transition-fast);
}

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

.burger-menu {
  display: none;
}

@media (max-width: 768px) {
  .burger-menu {
    display: block;
  }
}

/* Hero Section */
#hero {
  position: relative;
  overflow: hidden;
  height: 100vh;
  display: flex;
  align-items: center;
}

#hero .absolute {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

#hero h1 {
  font-size: var(--font-size-5xl);
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

#hero p {
  color: var(--color-white);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xl);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* About Section */
.feature-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.feature-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: var(--radius-circle);
  flex-shrink: 0;
}

/* Timeline */
.timeline-container {
  position: relative;
  padding: var(--space-xl) 0;
}

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-primary-light);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-2xl);
  display: flex;
  justify-content: center;
}

.timeline-dot {
  position: absolute;
  left: 50%;
  top: 0;
  width: 20px;
  height: 20px;
  background-color: var(--color-primary);
  border-radius: var(--radius-circle);
  transform: translateX(-50%);
  z-index: 2;
}

.timeline-content {
  width: 45%;
  background-color: var(--color-white);
  padding: var(--space-lg);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-medium);
  position: relative;
}

.timeline-content-left {
  margin-right: auto;
}

.timeline-content-right {
  margin-left: auto;
}

.timeline-content-left::after,
.timeline-content-right::after {
  content: "";
  position: absolute;
  top: 10px;
  width: 20px;
  height: 20px;
  background-color: var(--color-white);
  transform: rotate(45deg);
}

.timeline-content-left::after {
  right: -10px;
}

.timeline-content-right::after {
  left: -10px;
}

@media (max-width: 768px) {
  .timeline-line {
    left: 20px;
  }
  
  .timeline-dot {
    left: 20px;
  }
  
  .timeline-content {
    width: calc(100% - 50px);
    margin-left: 40px;
  }
  
  .timeline-content-left,
  .timeline-content-right {
    margin-left: 40px;
    margin-right: 0;
  }
  
  .timeline-content-left::after,
  .timeline-content-right::after {
    left: -10px;
    right: auto;
  }
}

/* Research Section */
#research .card-image {
  overflow: hidden;
  border-radius: var(--radius-medium) var(--radius-medium) 0 0;
}

#research .card-image img {
  transition: transform var(--transition-slow);
}

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

/* Why Us Section */
#why-us {
  position: relative;
}

/* Projects Section */
.custom-slider {
  position: relative;
}

.slider-container {
  overflow: hidden;
}

.slider-track {
  display: flex;
  transition: transform var(--transition-medium);
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
  border-radius: var(--radius-circle);
  box-shadow: var(--shadow-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.slider-btn.prev {
  left: 20px;
}

.slider-btn.next {
  right: 20px;
}

.slider-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-circle);
  background-color: var(--color-gray-300);
  transition: background-color var(--transition-fast);
  cursor: pointer;
}

.slider-dot.active {
  background-color: var(--color-primary);
}

/* Success Stories Section */
#success-stories .card {
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform var(--transition-medium);
}

#success-stories .card:hover {
  transform: translateY(-5px);
}

#success-stories .card-image {
  height: 220px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

/* Resources Section */
.resource-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

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

/* News Section */
#news .card {
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform var(--transition-medium);
}

#news .card:hover {
  transform: translateY(-5px);
}

#news .card-image {
  height: 200px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

/* Testimonials Section */
.custom-testimonial-slider {
  position: relative;
}

.testimonial-slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
  border-radius: var(--radius-circle);
  box-shadow: var(--shadow-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.testimonial-slider-btn:hover {
  background-color: var(--color-primary-light);
}

.testimonial-slider-btn.prev {
  left: 20px;
}

.testimonial-slider-btn.next {
  right: 20px;
}

.testimonial-slider-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.testimonial-slider-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-circle);
  background-color: var(--color-gray-300);
  transition: background-color var(--transition-fast);
  cursor: pointer;
}

.testimonial-slider-dot.active {
  background-color: var(--color-primary);
}

/* FAQ Section */
.faq-item {
  border-bottom: 1px solid var(--color-gray-300);
  padding-bottom: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.faq-question {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: var(--space-md) 0;
}

.faq-question h3 {
  margin-bottom: 0;
}

.faq-icon {
  transition: transform var(--transition-medium);
}

.faq-question.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding-top: var(--space-md);
}

/* Community Section */
#community {
  position: relative;
}

#community .absolute {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Contact Section */
#contact form {
  margin-bottom: var(--space-xl);
}

#contact .btn-primary {
  width: 100%;
}

/* Media Section */
.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-medium);
}

.gallery-item img {
  transition: transform var(--transition-slow);
}

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

.gallery-item .absolute {
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  transition: opacity var(--transition-medium);
}

.gallery-item:hover .absolute {
  opacity: 1;
}

.gallery-item p {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  right: var(--space-md);
  color: var(--color-white);
  font-weight: 600;
}

/* Blog Preview Section */
#blog .card {
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform var(--transition-medium);
}

#blog .card:hover {
  transform: translateY(-5px);
}

#blog .card-image {
  height: 200px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

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

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

/* Footer */
footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--space-2xl) 0;
}

footer h3 {
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

footer p, footer a {
  color: var(--color-gray-300);
}

footer a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

footer .border-t {
  border-top-color: rgba(255, 255, 255, 0.1);
}

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

/* Success Page */
.success-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
  padding: var(--space-2xl);
}

/* Animations */
[data-scroll-reveal] {

  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-scroll-reveal].revealed {
  opacity: 1;
  transform: translateY(0) !important;
}

/* Image containers */
.image-container {
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

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

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

/* Mobile Menu */
.mobile-menu {
  display: none;
}

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

/* Utility Classes */
.hidden {
  display: none !important;
}

/* Responsive adjustments */
@media (max-width: 992px) {
  :root {
    --space-xl: 1.75rem;
    --space-2xl: 2.5rem;
    --space-3xl: 3.5rem;
    --font-size-4xl: 2rem;
    --font-size-5xl: 2.5rem;
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  #hero h1 {
    font-size: var(--font-size-4xl);
  }
  
  #hero p {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --font-size-3xl: 1.75rem;
    --font-size-4xl: 1.75rem;
  }
  
  .section-title {
    font-size: var(--font-size-xl);
  }
  
  #hero h1 {
    font-size: var(--font-size-3xl);
  }
  
  #hero p {
    font-size: var(--font-size-md);
  }
  
  .slider-btn, .testimonial-slider-btn {
    width: 30px;
    height: 30px;
  }
  
  .slider-btn.prev, .testimonial-slider-btn.prev {
    left: 5px;
  }
  
  .slider-btn.next, .testimonial-slider-btn.next {
    right: 5px;
  }
}

@media (max-width: 576px) {
  :root {
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.25rem;
  }
  
  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }
  
  .section-title::after {
    width: 60px;
  }
  
  #hero .btn-primary, #hero .btn-secondary {
    display: block;
    width: 100%;
    margin-bottom: var(--space-md);
  }
}

/* Animations and Transitions */
.animate-bounce {
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(-25%);
    animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
  }
  50% {
    transform: translateY(0);
    animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
  }
}

/* Parallax effect for background images */
.parallax {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

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

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

.card-image {
  width: 100%;
  height: 220px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: 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);
}

/* Read more links */
a[href*="#"].text-green-600,
a:has(span.text-green-600) {
  position: relative;
  display: inline-block;
  font-weight: 600;
  transition: color var(--transition-fast);
}

a[href*="#"].text-green-600::after,
a:has(span.text-green-600)::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: -2px;
  left: 0;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transform-origin: bottom right;
  transition: transform var(--transition-medium);
}

a[href*="#"].text-green-600:hover::after,
a:has(span.text-green-600):hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

/* Social Media Icons */
footer .flex.space-x-4 a,
footer .flex.space-x-6 a {
  position: relative;
  display: inline-block;
  transition: color var(--transition-fast);
  padding-bottom: 3px;
}

footer .flex.space-x-4 a::after,
footer .flex.space-x-6 a::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 1px;
  bottom: 0;
  left: 0;
  background-color: var(--color-white);
  transform: scaleX(0);
  transform-origin: bottom right;
  transition: transform var(--transition-medium);
}

footer .flex.space-x-4 a:hover::after,
footer .flex.space-x-6 a:hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

@media (max-width: 768px) {
  .menu-nav {
    display: none;
  }
}