/* Base & Utilities */
  *, *::before, *::after {
    box-sizing: border-box;
  }

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

  body {
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  /* Selection */
  ::selection {
    background: rgba(255, 107, 74, 0.3);
    color: #fff;
  }

  /* Scrollbar */
  ::-webkit-scrollbar {
    width: 8px;
  }
  ::-webkit-scrollbar-track {
    background: #0D0D0D;
  }
  ::-webkit-scrollbar-thumb {
    background: #3A3A3A;
    border-radius: 4px;
  }
  ::-webkit-scrollbar-thumb:hover {
    background: #FF6B4A;
  }

  /* Reveal animations — progressive enhancement, hidden if JS fails */
  .reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(30px);
    }
    .reveal.revealed {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* Navbar scroll state */
  nav.scrolled {
    background: rgba(13, 13, 13, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(58, 58, 58, 0.5);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  }

  /* Mobile menu animation */
  .menu-line {
    display: block;
    transition: all 0.3s ease;
  }
  #mobile-menu-btn.active .menu-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  #mobile-menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
  }
  #mobile-menu-btn.active .menu-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
    width: 20px;
  }

  /* Service card hover */
  .service-card {
    transform: translateY(0);
    transition: all 0.3s ease;
  }
  .service-card:hover {
    transform: translateY(-4px);
  }

  /* Map filter for dark theme */
  iframe[src*="google.com/maps"] {
    filter: grayscale(80%) invert(92%) contrast(90%);
  }

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