body {
      background-color: #121212;
      color: #fff;
      font-family: 'Poppins', sans-serif;
      scroll-behavior: smooth;
    }
    h1, h2, h3, h4, h5 {
      color: #66fcf1; 
    }
    a {
      color: #66fcf1;
      transition: color 0.3s ease;
      text-decoration: none;
    }
    a:hover {
      color: #45a29e;
    }
    .card {
      background-color: #1e1e1e;
      border: 1px solid #66fcf1;
      border-left: 5px solid #66fcf1;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      color: #fff;
      text-align: center;
    }
    .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(102, 252, 241, 0.3);
    }
    .timeline {
      border-left: 2px solid #66fcf1;
      padding-left: 20px;
    }
    .timeline-item {
      margin-bottom: 20px;
      position: relative;
    }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: -10px;
      top: 5px;
      width: 12px;
      height: 12px;
      background: linear-gradient(135deg, #66fcf1, #45a29e, #3a5f0b);
      border-radius: 50%;
    }
    .profile-img {
      max-width: 200px;
      border-radius: 50%;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .profile-img:hover {
      transform: scale(1.05);
      box-shadow: 0 0 15px rgba(102, 252, 241, 0.5);
    }
    footer {
      text-align: center;
      padding: 20px 0;
      border-top: 1px solid #333;
      margin-top: 50px;
      color: #bbb;
    }
    footer p:last-child {
      color: #666;
    }
    button, .btn {
      background: linear-gradient(135deg, #66fcf1, #45a29e, #3a5f0b);
      border: none;
      color: #fff;
      transition: background 0.3s ease, transform 0.3s ease;
    }
    button:hover, .btn:hover {
      transform: scale(1.05);
      background: linear-gradient(135deg, #45a29e, #3a5f0b, #66fcf1);
    }
    #backToTop {
      position: fixed;
      bottom: 30px;
      right: 30px;
      background: linear-gradient(135deg, #66fcf1, #45a29e, #3a5f0b);
      color: white;
      border: none;
      border-radius: 50%;
      width: 50px;
      height: 50px;
      display: none;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      cursor: pointer;
      z-index: 999;
    }

   .navbar {
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    background-color: transparent !important; 
  }

  .navbar.scrolled {
    background-color: #1e1e1e !important; 
    box-shadow: 0 2px 10px rgba(0,0,0,0.4);
  }

  @media (max-width: 991.98px) {
  .navbar-collapse {
    background-color: #1e1e1e !important;
    padding: 1rem;
    border-radius: 5px;
  }
}