. {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
 }

 body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    background-color: #132c52;
    color:white;
 }
 header {
    text-align: center;
    padding: 2rem 1rem;
    background: linear-gradient(135deg,#044590, #185f98)
    color: white;
    position: relative;
 }
 header .avatar {
    width: 110px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid #fff;
    margin-bottom: 1rem;
 }
 header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
 }
  header p {
    font-size: 1.1rem;
    opacity: 0.8;
  }
  header ul {
    list-style: none;
    margin-right: 30px;
    display:flex;
    justify-content: center;
    gap: 30px;
  }

  header ul li a {
    text-decoration:dotted;
    color: rgb(223, 217, 217);
    font-weight: bold;
    transition: color 0.3s;
  }
  header ul li a:hover {
    color: rgb(57, 57, 77);
  }
  main {
    padding: 2rem;
    max-width: 1100px;
    margin: auto;
  }
  .id {
    margin-bottom: 2rem;
    background: rgb(10, 18, 56);
    padding: 38px;
    border-radius: 15px;
    box-shadow: 0 4px 8px rgb(0,0,0,0.1);
  }

  .id h2 {
    color: white;
    margin-bottom: 1rem;
  }

  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(280px, 1fr));
    gap: 1.5rem;
  }
  .card {
    background: rgb(10, 18, 56);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 8px rgb(0,0,0,0.08);
    transition: transform 0.3s;
  }

  .card:hover {
    transform: translateY(-6px);
  }
  .card h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: white;
  }

  video, audio, iframe, object {
    width: 100%;
    border-radius: 10px;
  }
  .youtube-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
  }
  .youtube-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 90%;
    height: 90%;
  }
  .images img {
    width: 100%;
    margin-top: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  }
  footer {
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
    background: #132c52;
    color: white;
  }
  footer a:hover {
    text-decoration: underline;
  }