body {
      background-color: #203a43;
      color: #fff;
      font-family: Arial, sans-serif;
      margin: 0;
      padding: 0;
    }
    .author-header {
      background: #0f2027 center/cover;
      padding: 50px;
      position: relative;
    }
    .profile-img {
      width: 140px;
      height: 140px;
      border-radius: 50%;
      border: 4px solid #fff;
      margin-top: 10px;
    }
    .author-header h1 {
      margin: 10px 0 5px;
      font-size: 25px;
    }
    .author-header p {
      margin: 5px 0;
      opacity: 0.9;
      font-size: 16px;
    }
    
    .nav-bar {
        margin-top: 15px;
        border-bottom: 2px solid #333;
        padding-bottom: 5px;
    }
    
    .nav-link {
        margin-right: 15px;
        color: #ccc;
        text-decoration: none;
        font-size: 14px;
        padding-bottom: 4px;
        transition: color 0.3s ease, border-bottom 0.3s ease;
    }
    
    .nav-link.active, .nav-link:hover {
        color: #fff;
        border-bottom: 2px solid #6a0dad;
    }
    
    .btn {
      padding: 8px 5px;
      margin-right: 5px;
      margin-top: 5px;
      border-radius: 8px;
      text-decoration: none;
      display: inline-block;
    }
    .btn-connect {
      background: #6a0dad;
      color: #fff;
    }
    .btn-message {
      background: #203a43;
      border: 1px solid #6a0dad;
      color: #fff;
    }
    .container {
      display: flex;
      flex-wrap: wrap;
      gap: 20px;
      padding: 20px;
    }
    .left-column {
      flex: 3;
      min-width: 250px;
    }
    .right-column {
      flex: 1;
      min-width: 200px;
    }
    .card {
      background-color: #0f2027;
      padding: 20px;
      border-radius: 12px;
      margin-bottom: 20px;
    }
    .card h2 {
      border-bottom: 2px solid #333;
      padding-bottom: 8px;
      margin-bottom: 15px;
    }
    .card p {
        font-size: 16px;
      }
    .details i, .awards i {
      margin-right: 10px;
      color: #6a0dad;
    }
    .publication {
      margin-bottom: 15px;
      padding-bottom: 10px;
      border-bottom: 1px solid #333;
    }
    .books {
      margin-bottom: 15px;
      padding-bottom: 10px;
      border-bottom: 1px solid #333;
    }
    .education {
      margin-bottom: 15px;
      padding-bottom: 10px;
      border-bottom: 1px solid #333;
    }
    .recom {
      margin-bottom: 15px;
      padding-bottom: 10px;
      border-bottom: 1px solid #333;
    }
    .tag {
      display: inline-block;
      background: #333;
      padding: 5px 10px;
      border-radius: 5px;
      margin-right: 5px;
      margin-top: 5px;
    }
    .btn-read {
      background: #203a43; 
      border: 1px solid #6a0dad;
      color: #fff;
    }
    .publication a {
      color: inherit;
      text-decoration: none;
    }
    .publication a:hover {
      text-decoration: underline;
    }
    
    .footer {
      text-align: center;
      padding: 20px;
      font-size: 13px;
      color: #ccc;
      background: transparent;
      backdrop-filter: blur(5px);
      border-top: 1px solid #444;
      margin-top: 40px;
    }
    
    .footer a {
      color: #6b4eff;
      text-decoration: none;
      font-weight: bold;
    }
    
    .footer a:hover {
      text-decoration: underline;
    }
    
    @media (max-width: 768px) {
      .author-header {
        padding: 10px 10px;
        text-align: left;
      }
    
      .profile-img {
        width: 100px;
        height: 100px;
      }
    
      .author-header h1 {
        font-size: 20px;
      }
    
      .author-header p {
        font-size: 12.5px;
      }
    
      .container {
        flex-direction: column;
        padding: 10px;
      }
    
      .left-column,
      .right-column {
        min-width: 100%;
        flex: 1 1 100%;
      }
    
      .nav-bar {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
      }
    
      .nav-link {
        font-size: 13px;
        margin: 5px;
      }
    
      .btn {
        width: 30%;
        margin-bottom: 8px;
        text-align: center;
      }
    
      .card h2 {
        font-size: 16px;
      }
      .card p {
        font-size: 13px;
      }
    
      .publication, .books, .education, .recom {
        font-size: 14px;
      }
    
      .tag {
        font-size: 13px;
      }
    }