* { font-family: 'Roboto', sans-serif; }
    html, body { height: 100%; margin: 0; }
    
    .fade-in { opacity: 0; transform: translateY(30px); transition: all 0.8s ease-out; }
    .fade-in.visible { opacity: 1; transform: translateY(0); }
    
    .card-hover { transition: all 0.3s ease; }
    .card-hover:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(137, 152, 109, 0.3); }
    
    .btn-primary { transition: all 0.3s ease; }
    .btn-primary:hover { transform: scale(1.05); box-shadow: 0 10px 30px rgba(54, 101, 107, 0.4); }
    
    .btn-secondary { transition: all 0.3s ease; }
    .btn-secondary:hover { transform: scale(1.05); box-shadow: 0 10px 30px rgba(137, 152, 109, 0.4); }
    
    .nav-link { position: relative; }
    .nav-link::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: #89986D; transition: width 0.3s ease; }
    .nav-link:hover::after { width: 100%; }
    
    .hero-pattern { background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%2336656B' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); }
    
    .page-section { display: none; }
    .page-section.active { display: block; }
    
    @keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
    .float-animation { animation: float 3s ease-in-out infinite; }
    
    .portfolio-card { position: relative; overflow: hidden; }
    .portfolio-card::before { content: ''; position: absolute; inset: 0; background: rgba(137, 152, 109, 0.9); opacity: 0; transition: opacity 0.3s ease; z-index: 1; }
    .portfolio-card:hover::before { opacity: 1; }
    .portfolio-overlay { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s ease; z-index: 2; }
    .portfolio-card:hover .portfolio-overlay { opacity: 1; }

      .popup {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
  }

  .popup:target {
    display: flex;
  }

  .popup-content {
    background: white;
    max-width: 500px;
    width: 90%;
    padding: 40px;
    border-radius: 12px;
    position: relative;
  }

  .popup-content h2 {
    color: #36656B;
    margin-bottom: 15px;
  }

  .close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    text-decoration: none;
    font-size: 22px;
    color: #888;
  }

  .close-btn:hover {
    color: #36656B;
  }