body {
  margin: 0;
  height: 100vh;
  background: #f6f1eb;
  font-family: "Georgia", serif;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book {
  background: #fffdf9;
  padding: 50px;
  max-width: 400px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  border-radius: 8px;
}

h1 {
  font-weight: normal;
  margin-bottom: 10px;
}

.subtitle {
  font-style: italic;
  margin-bottom: 30px;
  color: #555;
}

input {
  width: 100%;
  padding: 12px;
  font-size: 16px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  padding: 12px 25px;
  font-size: 16px;
  background: #d8cfc4;
  border: none;
  cursor: pointer;
  font-family: "Georgia", serif;
}

button:hover {
  background: #cbbfb1;
}

#error {
  margin-top: 15px;
  color: #a05a5a;
}