/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  :root {
    --primary: #336699;
    --primary-light: #4d7bb8;
    --primary-dark: #1a4d7a;
    --secondary: #5588cc;
    --accent: #77aadd;
    --background: #ffffff;
    --surface: #f8fafc;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --border: #e2e8f0;
    --shadow: rgba(51, 102, 153, 0.1);
    --shadow-strong: rgba(51, 102, 153, 0.2);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  }
  
  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
  }
  
  /* Header */
  .header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: all 0.3s ease;
  }
  
  .nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
  }
  
  .logo h1 {
    color: var(--primary);
    font-size: 1.8rem;
    font-weight: 700;
  }
  
  .nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
  }
  
  .nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
  }
  
  .nav-links a:hover {
    color: var(--primary);
  }
  
  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
  }
  
  .nav-links a:hover::after {
    width: 100%;
  }
  
  .mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
  }
  
  .mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    margin: 3px 0;
    transition: 0.3s;
  }
  
  /* Hero Section */
  .hero {
    padding: 120px 0 80px;
    background: var(--gradient);
    color: white;
    overflow: hidden;
    position: relative;
  }
  
  .hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
  }
  
  .hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
  }
  
  .hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
  }
  
  .cta-button {
    display: inline-block;
    background: white;
    color: var(--primary);
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    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, 0.15);
  }
  
  .hero-graphic {
    position: relative;
    height: 400px;
  }
  
  .floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
  }
  
  .element {
    position: absolute;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
  }
  
  .element-1 {
    width: 120px;
    height: 120px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
  }
  
  .element-2 {
    width: 80px;
    height: 80px;
    top: 60%;
    right: 20%;
    animation-delay: 2s;
  }
  
  .element-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 50%;
    animation-delay: 4s;
  }
  
  @keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
  }
  
  /* Applications Section */
  .applications {
    padding: 80px 0;
    background: var(--surface);
  }
  
  .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
  }
  
  .section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
  }
  
  .app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
  }
  
  .app-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 6px var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border);
  }
  
  .app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px var(--shadow-strong);
  }
  
  .app-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
  }
  
  .app-icon svg {
    width: 28px;
    height: 28px;
    color: white;
  }
  
  .app-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
  }
  
  .app-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
  }
  
  .app-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
  }
  
  .tag {
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
  }
  
  .app-link {
    display: inline-block;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--primary);
    border-radius: 8px;
    transition: all 0.3s ease;
  }
  
  .app-link:hover {
    background: var(--primary);
    color: white;
  }
  
  /* About Section */
  .about {
    padding: 80px 0;
    background: white;
  }
  
  .about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
  }
  
  .about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
  }
  
  .about-text p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    line-height: 1.7;
  }
  
  .about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .stat {
    text-align: center;
    padding: 1.5rem;
    background: var(--surface);
    border-radius: 12px;
  }
  
  .stat h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
  }
  
  .stat p {
    color: var(--text-secondary);
    font-weight: 500;
  }
  
  /* Contact Section */
  .contact {
    padding: 80px 0;
    background: var(--surface);
    text-align: center;
  }
  
  .contact h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
  }
  
  .contact p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
  }
  
  .contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
  }
  
  .contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: white;
    padding: 1.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px var(--shadow);
  }
  
  .contact-item svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
  }
  
  .contact-item span {
    font-weight: 500;
    color: var(--text-primary);
  }
  
  /* Footer */
  .footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
  }
  
  .footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
  }
  
  .footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
  }
  
  .footer-brand p {
    opacity: 0.8;
  }
  
  .footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }
  
  .footer-column h4 {
    margin-bottom: 1rem;
    font-weight: 600;
  }
  
  .footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
  }
  
  .footer-column a:hover {
    color: white;
  }
  
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    opacity: 0.8;
    width: 100%
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    .nav-links {
      display: none;
    }
    
    .mobile-menu-toggle {
      display: flex;
    }
    
    .hero-container {
      grid-template-columns: 1fr;
      text-align: center;
      gap: 2rem;
    }
    
    .hero-title {
      font-size: 2.5rem;
    }
    
    .app-grid {
      grid-template-columns: 1fr;
    }
    
    .about-content {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    
    .contact-info {
      flex-direction: column;
      align-items: center;
    }
    
    .footer-content {
      grid-template-columns: 1fr;
      gap: 2rem;
    }
    
    .footer-links {
      grid-template-columns: 1fr;
      gap: 1rem;
    }
    
    .container {
      padding: 0 1rem;
    }
    
    .nav-container {
      padding: 0 1rem;
    }
    
    .hero-container {
      padding: 0 1rem;
    }
  }
  
  @media (max-width: 480px) {
    .hero-title {
      font-size: 2rem;
    }
    
    .section-title {
      font-size: 2rem;
    }
    
    .app-grid {
      grid-template-columns: 1fr;
    }
    
    .app-card {
      padding: 1.5rem;
    }
  }
  
  /* Smooth scrolling */
  html {
    scroll-behavior: smooth;
  }
  
  /* Loading animations */
  .app-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
  }
  
  .app-card:nth-child(1) { animation-delay: 0.1s; }
  .app-card:nth-child(2) { animation-delay: 0.2s; }
  .app-card:nth-child(3) { animation-delay: 0.3s; }
  .app-card:nth-child(4) { animation-delay: 0.4s; }
  .app-card:nth-child(5) { animation-delay: 0.5s; }
  .app-card:nth-child(6) { animation-delay: 0.6s; }
  
  @keyframes fadeInUp {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }