body {
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  font-family: 'Segoe UI', sans-serif;
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  text-align: center;
}
.container {
  background: rgba(255, 255, 255, 0.1);
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 0 15px rgba(0,0,0,0.4);
}
input {
  padding: 10px;
  font-size: 1rem;
  border-radius: 8px;
  border: none;
  width: 300px;
  text-align: center;
  margin: 10px 0;
}
.code {
  font-size: 2rem;
  margin-top: 15px;
  letter-spacing: 3px;
  font-weight: bold;
  background: #fff;
  color: #333;
  padding: 10px 20px;
  border-radius: 10px;
  display: inline-block;
}
button {
  margin-top: 10px;
  padding: 10px 20px;
  font-size: 1rem;
  background: #00c6ff;
  border: none;
  border-radius: 8px;
  color: black;
  cursor: pointer;
  transition: 0.3s;
}
button:hover {
  background: #0072ff;
  color: white;
}