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

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

  body {
    overflow-x: hidden;
  }

  /* Custom font weight classes */
  .font-600 { font-weight: 600; }
  .font-700 { font-weight: 700; }
  .font-800 { font-weight: 800; }

  /* Nav scroll state */
  .nav {
    transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
  }

  .nav.scrolled {
    background: rgba(250, 245, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(107, 33, 168, 0.1);
    padding: 0;
  }

  /* Scroll reveal */
  .reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s ease, transform 0.7s ease;
  }

  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(30px);
    }
    .reveal.visible {
      opacity: 1;
      transform: none;
    }
  }

  .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; }

  /* Service card hover */
  .service-card {
    transform: translateY(0);
  }

  /* Mobile menu animation */
  #mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
  }

  #mobile-menu.open {
    max-height: 400px;
    padding: 1rem 0;
  }

  /* Hamburger animation */
  #menu-btn svg line {
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  #menu-btn.active svg line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }

  #menu-btn.active svg line:nth-child(2) {
    opacity: 0;
  }

  #menu-btn.active svg line:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
  }

  /* Selection color */
  ::selection {
    background: rgba(147, 51, 234, 0.2);
    color: #3b0764;
  }