body {
  font-family: 'Segoe UI', sans-serif;
  background: #f4f6f8;
  display: flex;
  justify-content: center;
  padding: 40px;
}

.tts-box {
  background: white;
  padding: 30px;
  border-radius: 16px;
  max-width: 500px;
  width: 100%;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

h1 {
  margin-bottom: 20px;
  font-size: 24px;
  color: #333;
}

textarea {
  width: 100%;
  height: 140px;
  padding: 15px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 10px;
  margin-bottom: 15px;
  resize: none;
}

select {
  width: 100%;
  padding: 10px;
  font-size: 16px;
  margin-bottom: 20px;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.btns {
  display: flex;
  gap: 15px;
  justify-content: center;
}

button {
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  color: white;
  background-color: #007bff;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}