:root {
  /* Color Palette */
  --primary-green: #2D5A27;
  --secondary-green: #4A7C59;
  --light-green: #7FB069;
  --accent-green: #A4D4B4;
  --earth-brown: #8B4513;
  --light-brown: #D2691E;
  --white: #FFFFFF;
  --light-gray: #F8F9FA;
  --medium-gray: #6C757D;
  --dark-gray: #343A40;
  --error-red: #DC3545;
  --success-green: #28A745;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --h1-size: clamp(2.5rem, 5vw, 4rem);
  --h2-size: clamp(2rem, 4vw, 3rem);
  --h3-size: clamp(1.5rem, 3vw, 2rem);
  --h4-size: clamp(1.25rem, 2.5vw, 1.5rem);
  --body-size: clamp(1rem, 2vw, 1.125rem);
  
  /* Spacing System (8px base) */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-xxl: 64px;
  --space-xxxl: 96px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  
  /* Animations */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-family);
  line-height: 1.5;
  color: var(--dark-gray);
  background-color: var(--white);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

h1 { font-size: var(--h1-size); }
h2 { font-size: var(--h2-size); }
h3 { font-size: var(--h3-size); }
h4 { font-size: var(--h4-size); }

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

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

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }
}

/* Animated Leaves Background */
.leaves-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.leaf {
  position: absolute;
  font-size: 24px;
  opacity: 0.6;
  animation: float 15s infinite linear;
}

.leaf-1 {
  top: -10%;
  left: 10%;
  animation-delay: 0s;
  animation-duration: 20s;
}

.leaf-2 {
  top: -10%;
  left: 30%;
  animation-delay: -5s;
  animation-duration: 25s;
}

.leaf-3 {
  top: -10%;
  left: 60%;
  animation-delay: -10s;
  animation-duration: 18s;
}

.leaf-4 {
  top: -10%;
  left: 80%;
  animation-delay: -15s;
  animation-duration: 22s;
}

.leaf-5 {
  top: -10%;
  left: 50%;
  animation-delay: -8s;
  animation-duration: 16s;
}

@keyframes float {
  0% {
    transform: translateY(-100px) rotate(0deg);
    opacity: 0.6;
  }
  10% {
    opacity: 0.8;
  }
  90% {
    opacity: 0.8;
  }
  100% {
    transform: translateY(calc(100vh + 100px)) rotate(360deg);
    opacity: 0;
  }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(45, 90, 39, 0.1);
  z-index: 1000;
  transition: var(--transition-normal);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-sm);
  padding-right: var(--space-sm);
}

.nav-logo h2 {
  color: var(--primary-green);
  margin: 0;
  font-size: 1.5rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  gap: var(--space-md);
}

.nav-link {
  color: var(--dark-gray);
  font-weight: 500;
  transition: var(--transition-normal);
  position: relative;
}

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

.nav-link:hover::after,
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-green);
  border-radius: 1px;
}

/* Mobile Navigation */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: var(--primary-green);
  border-radius: 2px;
  transition: var(--transition-normal);
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: var(--white);
    width: 100%;
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    padding: var(--space-md) 0;
  }

  .nav-menu.active {
    left: 0;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
  }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: 8px;
  font-size: var(--body-size);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

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

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

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

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

/* Ripple Effect */
.ripple-effect {
  position: relative;
  overflow: hidden;
}

.ripple-effect::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}

.ripple-effect:hover::before {
  width: 300px;
  height: 300px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--accent-green) 0%, var(--light-green) 100%);
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://images.pexels.com/photos/4750274/pexels-photo-4750274.jpeg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0.2;
  z-index: -1;
}

.hero-background-contact {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('https://images.pexels.com/photos/4750344/pexels-photo-4750344.jpeg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  opacity: 0.2;
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero h1 {
  color: var(--white);
  font-weight: 700;
  margin-bottom: var(--space-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  color: var(--white);
  font-size: 1.25rem;
  margin-bottom: var(--space-xl);
  max-width: 600px;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    padding-top: 80px;
  }
  
  .hero-background,
  .hero-background-contact {
    background-attachment: scroll;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 250px;
  }
}

/* Contact Hero */
.contact-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
  margin-top: 70px;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.section-header h2 {
  color: var(--primary-green);
  margin-bottom: var(--space-sm);
}

.section-header p {
  color: var(--medium-gray);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

/* About Section */
.about-section {
  padding: var(--space-xxxl) 0;
  background: var(--light-gray);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xxl);
  align-items: center;
}

.about-text h3 {
  color: var(--primary-green);
  margin-bottom: var(--space-sm);
  margin-top: var(--space-md);
}

.about-text h3:first-child {
  margin-top: 0;
}

.about-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

.stats {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

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

.stat-item h4 {
  color: var(--primary-green);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.stat-item span {
  color: var(--medium-gray);
  font-size: 0.875rem;
  font-weight: 500;
}

@media (max-width: 768px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .stats {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

/* Systems Section */
.systems-section {
  padding: var(--space-xxxl) 0;
}

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

.system-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.system-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  height: 250px;
  overflow: hidden;
  position: relative;
}

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

.card-image:hover img {
  transform: scale(1.1);
}

.card-content {
  padding: var(--space-lg);
}

.card-content h3 {
  color: var(--primary-green);
  margin-bottom: var(--space-sm);
}

.card-content ul {
  list-style: none;
  margin-top: var(--space-sm);
}

.card-content li {
  color: var(--medium-gray);
  margin-bottom: var(--space-xs);
  position: relative;
  padding-left: var(--space-sm);
}

.card-content li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--light-green);
  font-weight: bold;
}

@media (max-width: 768px) {
  .systems-grid {
    grid-template-columns: 1fr;
  }
}

/* Benefits Section */
.benefits-section {
  padding: var(--space-xxxl) 0;
  background: var(--light-gray);
}

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

.benefit-item {
  background: var(--white);
  padding: var(--space-xl);
  border-radius: 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.benefit-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.benefit-icon {
  font-size: 3rem;
  margin-bottom: var(--space-sm);
}

.benefit-item h3 {
  color: var(--primary-green);
  margin-bottom: var(--space-sm);
}

.benefit-item p {
  color: var(--medium-gray);
}

/* Gallery Section */
.gallery-section {
  padding: var(--space-xxxl) 0;
}

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

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  aspect-ratio: 1;
  cursor: pointer;
}

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

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-item::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(45, 90, 39, 0.7);
  opacity: 0;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* Contact Section */
.contact-section {
  padding: var(--space-xxxl) 0;
  background: var(--light-gray);
}

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

.contact-form-container {
  background: var(--white);
  padding: var(--space-xl);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}

.contact-form-container h2 {
  color: var(--primary-green);
  margin-bottom: var(--space-lg);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-sm);
  border: 2px solid #E9ECEF;
  border-radius: 8px;
  font-size: var(--body-size);
  font-family: inherit;
  transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(45, 90, 39, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
  cursor: pointer;
  font-size: 0.875rem;
  line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  margin: 0;
  transform: scale(1.2);
}

.error-message {
  color: var(--error-red);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
  display: block;
}

.contact-info-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-info {
  background: var(--white);
  padding: var(--space-xl);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}

.contact-info h2 {
  color: var(--primary-green);
  margin-bottom: var(--space-md);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.info-icon {
  font-size: 1.5rem;
  margin-top: var(--space-xs);
}

.info-content h3 {
  color: var(--primary-green);
  margin-bottom: var(--space-xs);
  font-size: 1.125rem;
}

.info-content p {
  color: var(--medium-gray);
  margin: 0;
}

.social-links-contact {
  background: var(--white);
  padding: var(--space-xl);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}

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

.social-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm);
  background: var(--light-gray);
  border-radius: 8px;
  color: var(--dark-gray);
  transition: var(--transition-normal);
  font-size: 0.875rem;
}

.social-link:hover {
  background: var(--accent-green);
  color: var(--primary-green);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .social-grid {
    grid-template-columns: 1fr;
  }
}

/* Form Messages */
.form-message {
  position: fixed;
  top: 100px;
  right: var(--space-md);
  z-index: 1001;
  max-width: 400px;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease;
}

.form-message.success .message-content {
  background: var(--success-green);
  color: var(--white);
}

.form-message.error .message-content {
  background: var(--error-red);
  color: var(--white);
}

.message-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  border-radius: 8px;
}

.close-message {
  background: none;
  border: none;
  color: inherit;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  margin-left: var(--space-sm);
}

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

/* Footer */
.footer {
  background: var(--primary-green);
  color: var(--white);
  padding: var(--space-xxl) 0 var(--space-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-section h3 {
  margin-bottom: var(--space-sm);
}

.footer-section h4 {
  margin-bottom: var(--space-sm);
  color: var(--accent-green);
}

.footer-section ul {
  list-style: none;
}

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

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-normal);
}

.footer-section a:hover {
  color: var(--white);
}

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

.social-links a {
  font-size: 1.5rem;
  transition: var(--transition-normal);
}

.social-links a:hover {
  transform: translateY(-2px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  animation: fadeIn 0.3s ease;
}

.modal-content {
  position: relative;
  margin: 5% auto;
  max-width: 90%;
  max-height: 90%;
}

.modal-content img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.close-modal {
  position: absolute;
  top: -40px;
  right: 0;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  background: none;
  border: none;
}

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

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

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --space-xs: 6px;
    --space-sm: 12px;
    --space-md: 18px;
    --space-lg: 24px;
    --space-xl: 36px;
    --space-xxl: 48px;
    --space-xxxl: 64px;
  }
  
  .hero {
    min-height: 80vh;
  }
  
  .section-header {
    margin-bottom: var(--space-xl);
  }
  
  .benefits-grid,
  .systems-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .form-message {
    right: var(--space-sm);
    left: var(--space-sm);
    max-width: none;
  }
}