body {
  background: #1e1e1e;
  color: white;
  font-family: Arial;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.box {
  background: #2b2b2b;
  padding: 25px;
  border-radius: 12px;
  width: 350px;
  box-shadow: 0 0 20px rgba(0,0,0,0.4);
}

input {
  width: 100%;
  padding: 12px;
  margin-top: 12px;
  background: #333;
  border: none;
  border-radius: 6px;
  color: white;
}

button {
  width: 100%;
  padding: 12px;
  margin-top: 15px;
  background: #4CAF50;
  border: none;
  border-radius: 6px;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background: #45a049;
}