/* Theme System - Dark/Light Mode */
    :root {
      /* Light mode colors */
      --bg-primary: #ffffff;
      --bg-secondary: #f8fafc;
      --bg-tertiary: #f1f5f9;
      --text-primary: #1e293b;
      --text-secondary: #64748b;
      --text-muted: #94a3b8;
      --border-color: #e2e8f0;
      --shadow-light: rgba(0, 0, 0, 0.05);
      --shadow-medium: rgba(0, 0, 0, 0.1);
      --shadow-heavy: rgba(0, 0, 0, 0.15);
      
      /* Agricultural green palette */
      --primary-green: #16a34a;
      --secondary-green: #22c55e;
      --accent-green: #4ade80;
      --light-green: #f0fdf4;
      --dark-green: #15803d;
      --green-hover: #15803d;
    }

    [data-theme="dark"] {
      /* Dark mode colors */
      --bg-primary: #0f172a;
      --bg-secondary: #1e293b;
      --bg-tertiary: #334155;
      --text-primary: #f8fafc;
      --text-secondary: #cbd5e1;
      --text-muted: #94a3b8;
      --border-color: #334155;
      --shadow-light: rgba(0, 0, 0, 0.3);
      --shadow-medium: rgba(0, 0, 0, 0.4);
      --shadow-heavy: rgba(0, 0, 0, 0.6);
      
      /* Adjusted green colors for dark mode */
      --light-green: #1a2e1a;
      --green-hover: #22c55e;
    }

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

    body {
      font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
      background-color: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.6;
      transition: all 0.3s ease;
    }

    .serif {
      font-family: 'Libertinus Serif', Georgia, serif;
    }

    /* Navigation */
    .navbar {
      background: var(--bg-primary);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      z-index: 100;
      padding: 1rem 2rem;
      transition: all 0.3s ease;
    }

    .navbar-content {
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand .logo {
      font-family: 'Libertinus Serif', serif;
      font-size: 1.75rem;
      font-weight: 600;
      color: var(--primary-green);
      text-decoration: none;
    }

    .nav-buttons {
      display: flex;
      gap: 1rem;
      align-items: center;
    }

    .btn {
      padding: 0.5rem 1rem;
      border-radius: 8px;
      text-decoration: none;
      font-weight: 500;
      font-size: 0.875rem;
      transition: all 0.2s ease;
      border: none;
      cursor: pointer;
    }

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

    .btn-primary:hover {
      background: var(--green-hover);
      transform: translateY(-1px);
    }

    .btn-secondary {
      background: transparent;
      color: var(--text-primary);
      border: 1px solid var(--border-color);
    }

    .btn-secondary:hover {
      background: var(--bg-secondary);
    }

    /* Theme Toggle */
    .theme-toggle {
      position: relative;
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: 20px;
      padding: 0.5rem 0.75rem;
      cursor: pointer;
      transition: all 0.3s ease;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: var(--text-primary);
      font-size: 0.875rem;
      font-weight: 500;
      min-width: 80px;
      justify-content: center;
    }

    .theme-toggle:hover {
      background: var(--bg-tertiary);
    }

    .theme-toggle i {
      font-size: 0.875rem;
      transition: all 0.3s ease;
    }

    .theme-toggle .sun-icon {
      opacity: 1;
      transform: rotate(0deg);
    }

    .theme-toggle .moon-icon {
      opacity: 0;
      transform: rotate(180deg);
      position: absolute;
      left: 12px;
    }

    [data-theme="dark"] .theme-toggle .sun-icon {
      opacity: 0;
      transform: rotate(180deg);
    }

    [data-theme="dark"] .theme-toggle .moon-icon {
      opacity: 1;
      transform: rotate(0deg);
    }

    /* Hero Section */
    .hero {
      background: linear-gradient(135deg, var(--light-green) 0%, var(--bg-secondary) 100%);
      padding: 4rem 2rem;
      text-align: center;
    }

    [data-theme="dark"] .hero {
      background: linear-gradient(135deg, var(--light-green) 0%, var(--bg-secondary) 100%);
    }

    .hero-content {
      max-width: 800px;
      margin: 0 auto;
    }

    .hero h2 {
      font-family: 'Libertinus Serif', serif;
      font-size: clamp(2rem, 5vw, 3.5rem);
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 1.5rem;
      line-height: 1.2;
    }

    .hero p {
      font-size: 1.125rem;
      color: var(--text-secondary);
      margin-bottom: 2rem;
      line-height: 1.7;
    }

    .hero strong {
      color: var(--primary-green);
      font-weight: 600;
    }

    /* Features Section */
    .features {
      padding: 4rem 2rem;
      background: var(--bg-primary);
    }

    .features-container {
      max-width: 1200px;
      margin: 0 auto;
    }

    .features-title {
      font-family: 'Libertinus Serif', serif;
      text-align: center;
      font-size: 2.5rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 3rem;
    }

    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 2rem;
    }

    .feature-card {
      background: var(--bg-secondary);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 2rem;
      text-align: center;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--primary-green);
      transform: scaleX(0);
      transition: transform 0.3s ease;
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 10px 25px var(--shadow-medium);
      border-color: var(--primary-green);
    }

    .feature-card:hover::before {
      transform: scaleX(1);
    }

    .feature-icon {
      font-size: 3rem;
      margin-bottom: 1rem;
      display: block;
    }

    .feature-title {
      font-family: 'Libertinus Serif', serif;
      font-size: 1.5rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 1rem;
    }

    .feature-description {
      color: var(--text-secondary);
      line-height: 1.6;
    }

    /* Carousel Section */
    .carousel {
      padding: 4rem 2rem;
      background: var(--bg-secondary);
      overflow: hidden;
    }

    .carousel-title {
      font-family: 'Libertinus Serif', serif;
      text-align: center;
      font-size: 2.5rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 3rem;
    }

    .slider {
      width: 100%;
      overflow: hidden;
      position: relative;
    }

    .slide-track {
      display: flex;
      animation: scroll 20s linear infinite;
      width: calc(300px * 12); /* 12 images total */
    }

    .slide-track img {
      width: 300px;
      height: 200px;
      object-fit: cover;
      border-radius: 12px;
      margin-right: 1rem;
      box-shadow: 0 4px 15px var(--shadow-light);
      transition: transform 0.3s ease;
    }

    .slide-track img:hover {
      transform: scale(1.05);
    }

    @keyframes scroll {
      0% { transform: translateX(0); }
      100% { transform: translateX(calc(-300px * 6 - 6rem)); } /* Move by 6 images */
    }

    /* CTA Section */
    .cta {
      background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
      color: white;
      padding: 4rem 2rem;
      text-align: center;
    }

    .cta-content {
      max-width: 600px;
      margin: 0 auto;
    }

    .cta h3 {
      font-family: 'Libertinus Serif', serif;
      font-size: 2.5rem;
      font-weight: 600;
      margin-bottom: 1rem;
    }

    .cta p {
      font-size: 1.125rem;
      margin-bottom: 2rem;
      opacity: 0.9;
    }

    .cta-button {
      display: inline-block;
      background: white;
      color: var(--primary-green);
      padding: 1rem 2rem;
      border-radius: 12px;
      text-decoration: none;
      font-weight: 600;
      font-size: 1.125rem;
      transition: all 0.3s ease;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    }

    .cta-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    }

    /* Footer */
    .site-footer {
      background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
      color: white;
      margin-top: auto;
      padding: 3rem 2rem 2rem;
    }

    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
      align-items: flex-start;
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .footer-logo {
      width: 60px;
      height: 60px;
      border-radius: 12px;
      object-fit: cover;
      background: white;
      padding: 8px;
    }

    .site-footer h3,
    .site-footer h4 {
      font-family: 'Libertinus Serif', serif;
      margin: 0 0 1rem 0;
      font-weight: 600;
    }

    .site-footer h3 {
      font-size: 1.5rem;
    }

    .site-footer p {
      margin: 0;
      opacity: 0.9;
      line-height: 1.6;
    }

    .site-footer ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .site-footer a {
      color: white;
      text-decoration: none;
      opacity: 0.9;
      transition: all 0.2s ease;
    }

    .site-footer a:hover {
      opacity: 1;
      transform: translateX(4px);
    }

    .footer-bottom {
      max-width: 1200px;
      margin: 2rem auto 0;
      padding-top: 2rem;
      border-top: 1px solid rgba(255, 255, 255, 0.2);
      text-align: center;
      font-size: 0.875rem;
      opacity: 0.8;
    }

    .social-media {
      display: flex;
      gap: 1rem;
      margin-top: 1rem;
    }

    .social-media a {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      transition: all 0.3s ease;
      font-size: 1.25rem;
    }

    .social-media a:hover {
      background: rgba(255, 255, 255, 0.2);
      transform: translateY(-2px);
    }

    /* Scroll to Top Button */
    .scroll-to-top {
      position: fixed;
      bottom: 2rem;
      right: 2rem;
      width: 50px;
      height: 50px;
      background: var(--primary-green);
      color: white;
      border: none;
      border-radius: 50%;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 15px var(--shadow-medium);
      transition: all 0.3s ease;
      opacity: 0;
      visibility: hidden;
      z-index: 1000;
    }

    .scroll-to-top.visible {
      opacity: 1;
      visibility: visible;
    }

    .scroll-to-top:hover {
      transform: translateY(-3px);
      box-shadow: 0 6px 20px var(--shadow-heavy);
    }

    /* Responsive Design */
    @media (max-width: 768px) {
      .navbar {
        padding: 1rem;
      }

      .navbar-content {
        flex-direction: column;
        gap: 1rem;
      }

      .nav-buttons {
        flex-wrap: wrap;
        justify-content: center;
      }

      .hero {
        padding: 3rem 1rem;
      }

      .features,
      .carousel,
      .cta {
        padding: 3rem 1rem;
      }

      .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
      }

      .slide-track {
        animation-duration: 15s;
      }

      .site-footer {
        padding: 2rem 1rem;
      }

      .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
      }
    }

    /* Loading Animation */
    .loading {
      opacity: 0;
      animation: fadeIn 0.8s ease forwards;
    }

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

    /* Smooth transitions for all elements */
    * {
      transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
    }