* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  body {
  font-family: 'Montserrat', sans-serif;
  background-color: #0b0c2a;
  margin: 0;
  color: #333;
  }
  
  
  .top-bar {
    max-width: 900px;
    margin: 1rem auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .top-bar h2 {
    font-size: 1.5rem;
    color: #b561ff;
  }
  
  .page-header {
        display: flex;
        flex-direction: column;
        max-width: 900px;
        margin: 2rem auto 1rem;
        padding: 0 2rem;
      }
      
      .page-header h2 {
        font-size: 1.8rem;
        color: #b561ff;
        margin-bottom: 1rem;
      }
      
      .back-btn {
        display: inline-block;
        background-color: #b561ff;
        border: 1px solid #ccc;
        padding: 0.5rem 1rem;
        border-radius: 8px;
        font-weight: 500;
        cursor: pointer;
        text-decoration: none;
        color: #333;
        transition: background-color 0.2s;
        margin-top: 0.5rem;
        margin-left: auto;
      }
  
  .back-btn:hover {
  background-color: #f0f0f0;
  }
  
  .container {
  max-width: 900px;
  margin: auto;
  background: #1f1359;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
  }
  
  h1 {
  text-align: center;
  color: #223;
  }
  
  h2 {
  color: #b561ff;
  margin-top: 2rem;
  padding-bottom: 0.3rem;
  border-bottom: 2px solid #cde8ff;
  }
  h3 {
  color: #b561ff;
  }
  
  p, ul, ol {
  line-height: 1.7;
      text-align: justify;
      color: #d0d0d0
  }
  
  ul {
  padding-left: 1.2rem;
  }
  
  ol {
    padding-left: 1.2rem;
  }
  
  ul li, ol li {
  margin-bottom: 0.5rem;
    text-align: justify;
  }
  summary {
    font-weight: bold;
    font-size: 1.1rem;
    cursor: pointer;
    margin-bottom: 10px;
  }
  
  details {
    background: #e6f0ff;
    padding: 15px;
    margin-top: 15px;
    border-radius: 6px;
    border: 1px solid #cce0ff;
  }
  code {
    background-color: #eef;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: Consolas, monospace;
  }
  .footer {
  text-align: center;
  padding: 20px;
  margin-top: 30px;
  font-size: 0.9em;
  color: white;
  background-color: #1f1359;
  }
  
  .collapsible {
  background-color: #b561ff;
  color: #333;
  cursor: pointer;
  padding: 0.75rem 1rem;
  width: 100%;
  border: none;
  border-radius: 8px;
  text-align: left;
  outline: none;
  font-size: 1.1rem;
  font-weight: bold;
  margin-top: 1.5rem;
  }
  .active, .collapsible:hover {
    background-color: #b561ff;
  }
  .collapsible:hover {
  background-color: #b561ff;
  }
  
  .content {
  padding: 0 1rem;
  overflow: hidden;
  border-left: 3px solid #b561ff;
  margin-top: 0.5rem;
  background-color: #1f1359;
  border-radius: 0 0 8px 8px;
  max-height: 0; 
  transition: max-height 0.3s ease-out;
  }
  .content ul {
    margin: 1rem 0;
  }
  .content p, .content ul {
    margin: 1rem 0;
  }
  .content img {
    max-width: 100%;
    border-radius: 8px;
    margin: 15px 0;
  }
  img {
    max-width: 100%;
    margin: 10px 0;
    border-radius: 8px;
  }
  .note {
    background: #e3ecff;
    padding: 10px 15px;
    border-left: 4px solid #b561ff;
    border-radius: 6px;
    margin-top: 1rem;
  }
  table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    text-align: center;
    color: #e0e0e0;
    font-family: Arial, sans-serif;
    display: block;
    overflow-x: auto;
  }
  
  thead {
    color: #b561ff; 
    background-color: #000000;
  }
  
  th, td {
    padding: 10px;
    border: 1px solid #444; 
  }
  
  tbody tr{
    background-color: #2a2a2a; 
    color: #d0d0d0; 
  }
  
  
  .blur-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%; 
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 20px;
    box-sizing: border-box;
    transition: opacity 0.5s ease-out; 
    pointer-events: none; 
  }
  
  
  .blur-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backdrop-filter: blur(8px); 
    -webkit-backdrop-filter: blur(8px); 
    background: linear-gradient(to top, rgba(255,255,255,0.3), rgba(255,255,255,0)); 
    pointer-events: auto; 
  }
  
  .blur-overlay p {
      position: absolute; 
      top: 10rem;
      left: auto;
      z-index: 1; 
      margin-bottom: 10px;
      font-size: 20px;
      font-weight: bold;
      color: white;
      text-shadow: 0 0 2px rgba(255,255,255,0.3); 
      pointer-events: auto; 
  }
  
  .blur-overlay .btn {
      position: absolute; 
      top: 15rem;
      left: auto;
      z-index: 1; 
      padding: 10px 20px;
      background-color: #1f1359;
      color: white;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      font-size: 16px;
      pointer-events: auto; 
      transition: all 0.2s ease-in-out;
      text-decoration: none;
      padding: 1rem 2rem;
  }
  
  .blur-overlay .btn:hover {
      background-color: #2f1f7d;
  }
  
  
  .blur-overlay.hidden {
      opacity: 0;
      pointer-events: none; 
  }
  
  
  @media (width < 768px){
    .blur-overlay p{
      top: 5rem;
      margin: 2rem;
    }
    .blur-overlay .btn{
      top: 13rem;
    }
  }

  .video-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; 
    margin: 20px 0;
  }
  
  .video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
  }