:root {
      --primary-blue: #004860;
      --accent-yellow: #ffc107;
      --dark-blue: #002a3a;
      --light-gray: #f8f9fa;
      --text-dark: #2c3e50;
      --shadow-light: 0 2px 10px rgba(0,0,0,0.1);
      --shadow-medium: 0 5px 25px rgba(0,0,0,0.15);
      --shadow-heavy: 0 10px 40px rgba(0,0,0,0.2);
    }
    
    * {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }
    
    body {
      line-height: 1.6;
      color: var(--text-dark);
      overflow-x: hidden;
    }
    
    /* Smooth scrolling */
    html {
      scroll-behavior: smooth;
    }
    
    /* Loading animation */
    .loading-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: var(--primary-blue);
      z-index: 9999;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: opacity 0.5s ease;
    }
    
    .loading-spinner {
      width: 50px;
      height: 50px;
      border: 3px solid rgba(255,255,255,0.3);
      border-top: 3px solid var(--accent-yellow);
      border-radius: 50%;
      animation: spin 1s linear infinite;
    }
    
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    
    /* Enhanced hero section */
    .hero-gradient {
      background: linear-gradient(135deg, var(--primary-blue) 0%, #006b8a 50%, var(--dark-blue) 100%);
      position: relative;
      overflow: hidden;
    }
    
    .hero-gradient::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
      opacity: 0.3;
    }
    
    .hero-content {
      position: relative;
      z-index: 2;
    }
    
    /* Enhanced feature cards */
    .feature-card {
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      border: none;
      height: 100%;
      background: white;
      border-radius: 20px;
      overflow: hidden;
      position: relative;
    }
    
    .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary-blue), var(--accent-yellow));
      transform: scaleX(0);
      transition: transform 0.3s ease;
    }
    
    .feature-card:hover::before {
      transform: scaleX(1);
    }
    
    .feature-card:hover {
      transform: translateY(-15px) scale(1.02);
      box-shadow: var(--shadow-heavy);
    }
    
    .service-icon {
      width: 90px;
      height: 90px;
      background: linear-gradient(135deg, var(--primary-blue), #006b8a);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 1.5rem;
      position: relative;
      transition: all 0.3s ease;
    }
    
    .service-icon::before {
      content: '';
      position: absolute;
      top: -5px;
      left: -5px;
      right: -5px;
      bottom: -5px;
      background: linear-gradient(135deg, var(--accent-yellow), #ffd700);
      border-radius: 50%;
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    
    .feature-card:hover .service-icon::before {
      opacity: 0.3;
    }
    
    .feature-card:hover .service-icon {
      transform: scale(1.1) rotate(5deg);
    }
    
    /* Animated counters */
    .stats-counter {
      font-size: 3.5rem;
      font-weight: 800;
      color: var(--accent-yellow);
      text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
      position: relative;
    }
    
    .stats-counter::after {
      content: '+';
      font-size: 2rem;
      position: absolute;
      top: -10px;
      right: -20px;
    }
    
    /* Enhanced section titles */
    .section-title {
      position: relative;
      display: inline-block;
      margin-bottom: 3rem;
      font-weight: 700;
      font-size: 2.5rem;
    }
    
    .section-title::after {
      content: '';
      position: absolute;
      bottom: -15px;
      left: 50%;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background: linear-gradient(90deg, var(--primary-blue), var(--accent-yellow));
      border-radius: 2px;
    }
    
    .section-title::before {
      content: '';
      position: absolute;
      bottom: -20px;
      left: 50%;
      transform: translateX(-50%);
      width: 40px;
      height: 2px;
      background: var(--accent-yellow);
      border-radius: 1px;
    }
    
    /* Enhanced expertise cards */
    .expertise-card {
      background: white;
      border-radius: 20px;
      padding: 2.5rem;
      box-shadow: var(--shadow-medium);
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
    }
    
    .expertise-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 5px;
      background: linear-gradient(90deg, var(--primary-blue), var(--accent-yellow));
    }
    
    .expertise-card:hover {
      transform: translateY(-10px) scale(1.02);
      box-shadow: var(--shadow-heavy);
    }
    
    /* Enhanced timeline */
    .timeline-item {
      background: white;
      border-radius: 15px;
      padding: 2.5rem;
      margin-bottom: 2rem;
      box-shadow: var(--shadow-light);
      position: relative;
      transition: all 0.3s ease;
      border-left: 4px solid var(--primary-blue);
    }
    
    .timeline-item:hover {
      transform: translateX(10px);
      box-shadow: var(--shadow-medium);
    }
    
    .timeline-item::before {
      content: '';
      position: absolute;
      left: -20px;
      top: 50%;
      transform: translateY(-50%);
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary-blue), #006b8a);
      border-radius: 50%;
      border: 6px solid white;
      box-shadow: 0 0 0 4px #e9ecef, var(--shadow-light);
      transition: all 0.3s ease;
    }
    
    .timeline-item:hover::before {
      transform: translateY(-50%) scale(1.2);
      box-shadow: 0 0 0 4px #e9ecef, var(--shadow-medium);
    }
    
    /* Enhanced buttons */
    .btn-custom {
      background: linear-gradient(135deg, var(--accent-yellow), #ffd700);
      border: none;
      color: #000;
      font-weight: 600;
      padding: 15px 35px;
      border-radius: 50px;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    
    .btn-custom::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
      transition: left 0.5s ease;
    }
    
    .btn-custom:hover::before {
      left: 100%;
    }
    
    .btn-custom:hover {
      background: linear-gradient(135deg, #e0a800, var(--accent-yellow));
      transform: translateY(-3px) scale(1.05);
      box-shadow: 0 10px 25px rgba(255,193,7,0.4);
    }
    
    /* Client logos enhancement */
    .client-logo {
      transition: all 0.3s ease;
      filter: grayscale(100%) opacity(0.7);
      padding: 1rem;
    }
    
    .client-logo:hover {
      filter: grayscale(0%) opacity(1);
      transform: scale(1.1);
    }
    
    /* Scroll animations */
    .fade-in-up {
      opacity: 0;
      transform: translateY(30px);
      transition: all 0.6s ease;
    }
    
    .fade-in-up.visible {
      opacity: 1;
      transform: translateY(0);
    }
    
    /* Parallax effect */
    .parallax {
      background-attachment: fixed;
      background-position: center;
      background-repeat: no-repeat;
      background-size: cover;
    }
    
    /* Mobile optimizations */
    @media (max-width: 768px) {
      .section-title {
        font-size: 2rem;
      }
      
      .stats-counter {
        font-size: 2.5rem;
      }
      
      .hero-content h1 {
        font-size: 2.5rem;
      }
      
      .feature-card:hover {
        transform: translateY(-5px) scale(1.01);
      }
    }
    
    /* Accessibility improvements */
    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }
    
    /* Focus styles */
    .btn-custom:focus,
    .nav-link:focus {
      outline: 3px solid var(--accent-yellow);
      outline-offset: 2px;
    }
    
    /* High contrast mode support */
    @media (prefers-contrast: high) {
      :root {
        --primary-blue: #000080;
        --accent-yellow: #ffff00;
      }
    }
    
    /* Reduced motion support */
    @media (prefers-reduced-motion: reduce) {
      * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }
.tech-visual {
  position: relative;
  width: 100%;
  height: 500px;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0.08),
    rgba(255,255,255,0.02)
  );
  backdrop-filter: blur(12px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

.grid-layer {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  from { background-position: 0 0; }
  to { background-position: 200px 200px; }
}

.node {
  position: absolute;
  width: 10px;
  height: 10px;
  background: #00ffc8;
  border-radius: 50%;
  box-shadow: 0 0 15px #00ffc8;
  animation: float 6s ease-in-out infinite;
}

.n1 { top: 20%; left: 25%; }
.n2 { top: 40%; left: 70%; animation-delay: 1s; }
.n3 { top: 70%; left: 40%; animation-delay: 2s; }
.n4 { top: 30%; left: 55%; animation-delay: 3s; }

@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.scan-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0,255,200,0.8),
    transparent
  );
  animation: scan 4s linear infinite;
}

@keyframes scan {
  from { top: 0; }
  to { top: 100%; }
}

.system-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: linear-gradient(transparent, rgba(0,0,0,0.6));
  font-family: monospace;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  color: rgba(255,255,255,0.85);
}

.system-overlay .live {
  color: #28a745;
}