.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
  }

  
  .portfolio-nav {
    height: 90px;
    padding: 0 50px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    background: #10101000;
    transition: height 0.6s ease, background-color 0.6s ease;
  }

  .portfolio-nav.scrolled{
    background: #101010da;
    height: 60px;
  }
  
  .nav-logo {
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    font-size: 16px;
  }
  
  .nav-links {
    display: flex;
    gap: 42px;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  .nav-links a,
  .mobile-menu a {
    color: #ffffffa6;
    text-decoration: none;
    font-weight: 400;
    font-size: 14px;
    transition: color 0.3s ease;
    letter-spacing: 1px;
  }

  .nav-links a.active,  .mobile-menu a.active{
    color: #ffffff;
  }

  .nav-links a:hover, .mobile-menu:hover{
    color: rgb(0, 255, 200);
  }
  
  .nav-button {
    justify-self: end;
    color: #fff;
    text-decoration: none;
    border: 1px solid #fff;
    border-radius: 999px;
    padding: 10px 22px;
    font-size: 13px;
    font-weight: 700;
  }
  
  .nav-toggle {
    display: none;
  }
  
  .mobile-menu {
    display: none;
  }
  
  main .hero-section{
    padding-top: 90px;
  }
  
  @media (max-width: 768px) {
    .portfolio-nav {
      height: 76px;
      padding: 0 20px;
      grid-template-columns: 1fr auto auto;
      gap: 16px;
      position: relative;
      z-index: 1000;
      background:  #10101030;
    }

    .portfolio-nav.scrolled{
      background: #101010da;
      height: 50px;
    }
  
    .nav-links {
      display: none;
    }
  
    .nav-button {
      font-size: 12px;
      padding: 8px 16px;
    }
  
    .nav-toggle {
      display: flex;
      width: 32px;
      height: 24px;
      background: none;
      border: 0;
      flex-direction: column;
      justify-content: center;
      gap: 6px;
    
    }
  
    .nav-toggle span {
      display: block;
      height: 2px;
      background: #fff;
      width: 100%;
      transition: transform 0.3s ease;
    }
  
    .mobile-menu {
      display: none;
      position: fixed;
      inset: 0; 
      background: #101010;
      padding: 50px 24px;
      padding-top: 100px;
    }
  
    .mobile-menu.is-open {
      display: flex;
      flex-direction: column;
      gap: 28px;
    }
  
    .mobile-menu a {
      font-size: 32px;
    }
  
    main {
      /* padding-top: 76px; */
    }

    .nav-toggle.is-active span:first-child {
      transform: translateY(4px) rotate(45deg);
    }
    
    .nav-toggle.is-active span:last-child {
      transform: translateY(-4px) rotate(-45deg);
    }


  }