*,
*:before,
*:after {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  background-color: #121317;
}

nav {
  height: 100vh;
  width: 70vw;
  min-width: 600px;
  display: flex;
  align-items: baseline;
  justify-content: space-around;
  margin: auto;
}

a {
  position: relative;
  text-decoration: none;
  font-family: "Poppins", sans-serif;
  color: #a0a0a0;
  font-size: 18px;
  letter-spacing: 0.5px;
  padding: 0 10px;
}

a:before,
a:after {
  content: "";
  position: absolute;
  height: 3px;
  width: 0;
  background-color: #18f08b;
  transition: 0.5s;
}

a:after {
  left: 0;
  bottom: -10px;
}

a:before {
  right: 0;
  top: -10px;
}

a:hover {
  color: #ffffff;
}

a:hover:after,
a:hover:before {
  width: 100%;
}

/* Responsive design for screens up to 768px wide (Tablets) */
@media (max-width: 768px) {
  nav {
    width: 90vw; /* Adjust width for smaller screens */
    min-width: auto;
    flex-direction: column; /* Stack items vertically */
    align-items: center; /* Center items vertically */
    text-align: center; /* Center text */
  }
  a {
    margin: 10px 0; /* Adjust vertical spacing */
    padding: 10px 0; /* Adjust padding */
  }
  a:before,
  a:after {
    width: 100%; /* Full-width underline on hover */
  }
}

/* Responsive design for screens up to 480px wide (Smartphones) */
@media (max-width: 480px) {
  nav {
    width: 90vw; /* Adjust width for smaller screens */
    min-width: auto;
    flex-direction: column; /* Stack items vertically */
    align-items: center; /* Center items vertically */
    text-align: center; /* Center text */
  }
  a {
    margin: 10px 0; /* Adjust vertical spacing */
    padding: 10px 0; /* Adjust padding */
    font-size: 16px; /* Reduce font size for smaller screens */
  }
  a:before,
  a:after {
    width: 100%; /* Full-width underline on hover */
  }
}