body {
  font-family: Arial, sans-serif;
  background: #f4f6fb;
  margin: 0;
  padding: 20px;
}

h1 {
  text-align: center;
}

#books-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 15px;
}

.book-card {
  background: white;
  padding: 15px;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.book-card:hover {
  transform: scale(1.03);
}

.book-card h3 {
  margin: 0;
  font-size: 16px;
}

.book-card p {
  font-size: 13px;
  color: #555;
}

/* Reader */
#readerModal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 999;
}

#readerFrame {
  width: 90%;
  height: 90%;
  margin: 3% auto;
  display: block;
  border-radius: 10px;
  border: none;
  background: white;
}

#closeBtn {
  position: absolute;
  top: 15px;
  right: 20px;
  color: white;
  font-size: 22px;
  cursor: pointer;
}
.books-disclaimer {
  max-width: 900px;
  margin: 40px auto 20px;
  padding: 20px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  font-size: 14px;
  line-height: 1.7;
  color: #333;
}

.books-disclaimer p {
  margin-bottom: 12px;
}

.books-disclaimer strong {
  color: #000;
}