nav a {
    color: #f5f5f5;
    text-transform: uppercase;
    text-decoration: none;
    margin-left: 20px;
    font-weight: bold;
    letter-spacing: 1px;
    transition: color 0.3s;
  }

  nav a:hover,
  .mobile-menu a:hover {
    color: #a8dadc;
  }

  .menu-toggle {
    display: none;
    font-size: 30px;
    cursor: pointer;
    color: #f5f5f5;
  }

  .mobile-menu {
    display: none;
    flex-direction: column;
    background-color: #0d1b2a;
    position: absolute;
    top: 70px;
    right: 0;
    width: 100%;
    z-index: 1001;
  }

  .mobile-menu a {
    padding: 15px;
    border-bottom: 1px solid #1b263b;
    color: #f5f5f5;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    font-weight: bold;
  }

  .mobile-menu.show {
    display: flex;
  }
  @media (max-width: 768px) {
    nav { display: none; }
    .menu-toggle { display: block; }
    nav a { font-size: 12px; }
  }

  #backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: #a8dadc;
  color: #0d1b2a;
  border: none;
  padding: 12px 18px;
  border-radius: 50px;
  font-size: 16px;
  cursor: pointer;
  display: none;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 1002;
}

#backToTop:hover {
  background-color: #89c2d9;
  transform: translateY(-3px);
}