body {
  font-family: Arial, sans-serif;
  background-color: #ffffff;
  color: #000;
  margin: 0;
  padding: 0;
}

header {
  background-color: #000;
  color: #fff;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  overflow-x: auto;
}

header .logo {
  height: 55px !important;
  width: auto !important;
  margin-right: 10px;
}

nav {
  display: flex;
  gap: 15px;
  flex-wrap: nowrap;
}

nav a {
  color: gold;
  text-decoration: none;
  font-weight: bold;
  font-size: 15px;
  white-space: nowrap;
}

nav a.active {
  color: #fff;
  background-color: gold;
  border-radius: 5px;
  padding: 5px 10px;
  text-decoration: none;
}

main {
  padding: 20px;
  max-width: 1200px;
  margin: auto;
}

footer {
  background-color: #000;
  color: gold;
  text-align: center;
  padding: 15px;
}

footer a {
  color: blue;
  text-decoration: underline;
}

.whatsapp-link {
  color: white;
}

.book-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  margin: 30px auto;
  max-width: 1000px;
}

.book-item {
  flex: 1 1 250px;
  max-width: 300px;
  box-sizing: border-box;
  text-align: center;
  border: 1px solid #ccc;
  border-radius: 10px;
  padding: 15px;
  background-color: #fff;
  box-shadow: 0 0 5px rgba(0,0,0,0.1);
}

.book-img {
  max-width: 120px;
  height: 60;
  margin: 0 auto 10px auto;
  display: block;
}

.book-button {
  display: inline-block;
  margin: 5px;
  padding: 5px 10px;
  background-color: gold;
  color: black;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  font-size: 14px;
}

.book-button:hover {
  background-color: #ffcc00;
}

@media (max-width: 600px) {
  .book-item {
    flex: 1 1 100%;
    max-width: 100%;
  }
}

.book-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding: 30px;
  max-width: 1200px;
  margin: auto;
}

.book-section {
  background-color: #f9f9f9;
  padding: 20px;
  border-radius: 8px;
  }
}