* {
    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: #56a9ff;
  }

.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: #56a9ff;
    margin-bottom: 1rem;
  }
  
  .back-btn {
    display: inline-block;
    background-color: #56a9ff;
    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: #a2cefd;
}

.container {
  max-width: 900px;
  margin: auto;
  background: #1f1359;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  position: relative;
}

h1 {
  text-align: center;
  color: #223;
}

h2 {
  color: #56a9ff;
  margin-top: 2rem;
  padding-bottom: 0.3rem;
border-bottom: 2px solid #cde8ff;
}
h3 {
  color: #56a9ff;
}
h4 {
  color: #56a9ff;
}

p, ul, ol, figcaption{
  line-height: 1.7;
  text-align: justify;
  color: #d0d0d0;

}

figcaption{
  margin: 0 0 1rem 0;
}

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: #e0e0e0;
  background-color: #1f1359;
}

.collapsible {
  background-color: #3b8adf;
  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: #539fdd;
  }
.collapsible:hover {
  background-color: #539fdd;
}

.content {
padding: 0 1rem;
overflow: hidden;
border-left: 3px solid #56a9ff;
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 #56a9ff;
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: #56a9ff; 
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;
}