/* Reset default styles */
  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  body {
    font-family: 'Arial', sans-serif;
  }

  /* Navbar styling */
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: #1f2937; /* dark gray */
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
  }

  .navbar .logo {
    font-size: 1.5rem;
    font-weight: bold;
  }

  .navbar ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
  }

  .navbar ul li a {
    text-decoration: none;
    color: #fff;
    transition: color 0.3s;
  }

  .navbar ul li a:hover {
    color: #10b981; /* emerald green */
  }

  /* Mobile menu button */
  .menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
  }

  .menu-toggle div {
    width: 25px;
    height: 3px;
    background-color: #fff;
  }

  /* Mobile menu */
  @media (max-width: 768px) {
    .navbar ul {
      position: absolute;
      top: 70px;
      left: 0;
      width: 100%;
      background-color: #1f2937;
      flex-direction: column;
      align-items: center;
      gap: 1rem;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-in-out;
    }

    .navbar ul.active {
      max-height: 300px;
    }

    .menu-toggle {
      display: flex;
    }
  }