body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: black;
  color: white;
}

/* Star background */
canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

/* Navbar */
header {
    background-color: transparent;
    padding: 10px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
  display: flex;
    justify-content: flex-end;
    align-items: center;
    list-style: none;
    gap: 30px;
    margin: 0;
    font-size: 20px;
}

nav ul li a {
  color: whitesmoke;
  text-decoration: none;
}

nav ul li a:hover {
  color: #c084f5;
}
.toggle {
    background: #6c43d4;
    border: none;
    color: white;
    padding: 5px 10px;
    border-radius: 8px;
    cursor: pointer;
}

/* Button styles */
.btn-container {
  text-align: center;
  margin: 20px 0;
}

.btn-view, .btn-download {
  background: #6c43d4;
  color: white;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
}

.btn-view:hover, .btn-download:hover {
  background: #8b5cf6;
}

/* PDF container */
.pdf-container {
  display: flex;
  justify-content: center;
  padding: 20px;
}

.pdf-container iframe {
  width: 80%;
  height: 80vh;
  background: white;
  border-radius: 6px;
  border:2px solid #ccc;
  box-shadow:0 4px 15px rgba(0, 0, 0, 0.4);
}
.pdf-container iframe::-webkit-scrollbar {
  display: none;
}

.pdf-container iframe {
  -ms-overflow-style: none; /* IE and Edge */
  scrollbar-width: none; /* Firefox */
}