@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100..900&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
  }

  main > section:nth-last-of-type(1) {
    padding-bottom: 50px;
}
  
  header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100px;
    transition: transform 0.3s ease;
  }
  
  header.hidden {
    transform: translateY(-100%);
  }
  
  .nav-links {
    display: flex;
    margin-left: auto;
    list-style: none;
    overflow: hidden;
  }
  
  .nav-links a {
    text-decoration: none;
    color: #6a9ef7;
    font-weight: bold;
    font-size: 16px;
    text-align: center;
    padding: 37px 20px;
    flex-shrink: 1;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
  }
  
  .nav-links a:hover, .nav-links a.active {
    background-color: #e9eef7;
    color: #004aad;
  }
  
  body {
    margin-top: 100px;
  }
  
  .upper-hover-area {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 20px;
    z-index: 999;
  }
  
  .logo img {  
    height: 140px;  
    padding: 30px;
}  

.track-and-trace {
    text-align: left;
    background-color: #d3d3d3; 
    padding: 100px;
    color: black;
  }
  
  .track-and-trace h1 {
    font-size: 4rem; 
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 10px;
    text-shadow: 1px 1px #000; 
    display: inline-block; 
    position: relative;
  }
  
  .track-and-trace h1::after {
    content: '';
    display: block;
    width: 100%; 
    height: 3px; 
    background-color: black; 
    position: absolute;
    bottom: -5px;
    left: 0;
  }
  
  .track-and-trace p {
    margin: 5px 0;
    font-size: 1.2rem; 
  }
  
  .track-and-trace a {
    color: black;
    text-decoration: none;
  }
  
  .track-and-trace a:hover {
    text-decoration: underline;
  }
  
  .track-form {
    display: block;
    text-align: left;
    margin-top: 20px;
  }
  
  .track-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    font-size: 1.2rem; 
  }
  
  .track-form input {
    width: 300px;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #000;
    border-radius: 4px;
    font-size: 1.2rem; 
    display: block; 
  }
  
  .track-form button {
    display: block; 
    width: auto; 
    padding: 10px 20px; 
    background-color: black;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1.2rem; 
    cursor: pointer;
    margin-top: 10px; 
  }
  
  .track-form button:hover {
    background-color: #444;
  }    

  .error-message {
    color: red; 
    font-weight: bold;
    margin-top: 10px; 
    font-size: 1.2rem; 
}

/* Footer */  
footer {  
  padding: 10px;  
  margin: 0;  
  background-color: white;  
  color: black;  
}  

footer .footer-content {  
  display: flex;  
  justify-content: space-between;  
  align-items: center;  
}  

footer .social-icons {  
  display: flex;  
}   

footer .social-icons img {  
  width: 36px;  
  height: 36px;  
  margin: 0 5px;  
}