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

  html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
  }

  body {
    overflow-x: hidden;
  }

  /* Smooth scroll offset for fixed header */
  section[id] {
    scroll-margin-top: 80px;
  }

  /* Header scroll state */
  #header.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(10, 37, 64, 0.08);
  }

  /* Navigation links */
  .nav-link {
    position: relative;
  }

  .nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #34d4a8;
    transition: width 0.3s ease;
  }

  .nav-link:hover::after {
    width: 100%;
  }

  /* Mobile menu */
  #mobileMenu {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  #mobileMenu.open {
    transform: translateX(0);
  }

  .mobile-link {
    transition: color 0.3s ease;
  }

  .mobile-link:hover {
    color: #34d4a8;
  }

  /* Service cards */
  .service-card {
    border: 1px solid rgba(10, 37, 64, 0.06);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease;
  }

  .service-card:hover {
    transform: translateY(-4px);
  }

  /* Scroll animations */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .reveal.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
  .reveal-delay-5 { transition-delay: 0.5s; }
  .reveal-delay-6 { transition-delay: 0.6s; }

  /* Form focus styles */
  input:focus, select:focus, textarea:focus {
    outline: none;
  }

  /* Selection color */
  ::selection {
    background: #34d4a8;
    color: #0a2540;
  }

  /* Custom scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }

  ::-webkit-scrollbar-track {
    background: #f0f4f8;
  }

  ::-webkit-scrollbar-thumb {
    background: #9db8cc;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #759cb8;
  }

  /* Responsive adjustments */
  @media (max-width: 768px) {
    html {
      scroll-padding-top: 70px;
    }

    section[id] {
      scroll-margin-top: 70px;
    }

    .font-display {
      font-family: 'Playfair Display', Georgia, serif;
    }
  }

  @media (min-width: 768px) {
    .font-display {
      font-family: 'Playfair Display', Georgia, serif;
    }
  }

  /* Print styles */
  @media print {
    #header, #mobileMenu, #contactForm {
      display: none;
    }

    body {
      color: #000;
      background: #fff;
    }

    .service-card {
      break-inside: avoid;
    }
  }