body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: #f0f2f5;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background: #ffffff;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  text-align: center;
  width: 95%;
  max-width: 400px;
}

.buttons {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 20px;
}

button {
  padding: 15px;
  font-size: 18px;
  width: 90%;
  margin: 0 auto;
  border: none;
  border-radius: 8px;
  background-color: #007BFF;
  color: white;
  transition: background 0.3s ease, transform 0.1s;
}

button:hover {
  background-color: #0056b3;
  transform: scale(1.02);
}

button:active {
  transform: scale(0.98);
}

#mensaje {
  margin-top: 20px;
  font-weight: bold;
  color: #333;
}