body {
    /* background-color: #111; */
    background: linear-gradient(125deg, #222121, #272829);
    color: #ddd;
    font-family: 'Roboto Mono', monospace;
    /* background-image: url('../img/background.jpg');  */
    background-position: center center; 
    background-size: cover;
    opacity: 0.8;
    /* margin: 0; */
}

html, body {
    height: 100%;
    overflow: hidden;
    width: 100%;
}
  

.navbar {
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid #ccc;
    height: 40px;
    cursor:pointer;
}

.navbar-item {
    background-color: #3d3a3a;
    color: #ffffff;
    font-size: 14px;
    padding: 8px 16px;
    margin-right: 8px;
    opacity: 0.7;
}

.navbar-item.active {
    background-color: #3d3a3a;
    border-bottom: 2px solid #007acc;
    opacity: 1;
}

.profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin: auto;
    max-width: 800px;
    height: 100vh;
}
  
.profile-pic {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
}

.profile-name {
    font-size: 24px;
    font-weight: bold;
    margin: 0;
}

.profile-title {
    font-size: 16px;
    margin: 0;
}

.profile-bio {
    text-align: center;
    margin-top: 20px;
}

.invisible-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
}
  
.social-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0;
    list-style: none;
    margin-bottom: 30px;
}

.social-icons li {
    margin: 0 8px;
}
  
.social-icons a {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #ffffff;
    transition: all 0.2s ease-in-out;
    text-align: center;
    text-decoration: none;
}
  
  
.social-icons a:hover {
    background-color: #333333;
}
  
.social-icons i {
    color: #333333;
    font-size: 18px;
}

.card-container {
    display: flex;
    flex-wrap: wrap;
    /* justify-content: space-between; */
    justify-content: center;
    margin: 0 20px;
  }
  
  .card {
    flex-basis: calc(25% - 20px);
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    background-color: rgba(0, 0, 0, 0.8);
    background-blend-mode: multiply;
    color: #fff;
    margin: 10px;
    margin-top: 30px;
    transition: transform 0.2s ease-in-out;
    opacity: 0.1;
  }
  
  .card:hover {
    transform: translateY(-5px);
    opacity: 1;
  }
  
  .card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #007bff;
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 20px;
  }
  
  .card-icon i {
    font-size: 30px;
  }
  
  .card-content {
    flex: 1;
  }
  
  .card-title {
    margin: 0;
  }

  .card-button {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    align-self: flex-end;
  }

  .knowledge {
    background-color: #1f1f1f;
    padding: 10px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 80%;
  }
  
  .tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
  }
  
  .tablink {
    background-color: #343a40;
    color: #fff;
    border: none;
    cursor: pointer;
    padding: 10px 20px;
    font-size: 18px;
    margin-right: 10px;
    border-radius: 5px 5px 0 0;
  }
  
  .tablink.active {
    background-color: #fff;
    color: #343a40;
  }
  
  .tabcontent {
    display: none;
  }
  
  .stack {
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: auto;
    max-height: 200px;
    margin-top: 20px;
  }
  
  .stack div {
    text-align: center;
    color: #fff;
    margin-right: 20px;
  }
  
  .stack i {
    font-size: 50px;
    margin-bottom: 10px;
  }
  
  @media only screen and (max-width: 768px) {
    .stack {
      flex-wrap: wrap;
    }
  
    .stack div {
      width: 50%;
    }
  }