body {
  font-family: Arial, sans-serif;
  background: #f1f4f8;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.login-box {
  background: white;
  padding: 30px;
  width: 100%;
  max-width: 350px;
  border-radius: 10px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  text-align: center;
}

h2 {
  margin-bottom: 20px;
}

input {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
}

button {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 6px;
  background: #2563eb;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background: #1e40af;
}

.error {
  color: red;
  margin-top: 10px;
}