body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: #f2f2f2;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.login-box {
  background: #fff;
  padding: 40px 30px;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
  width: 100%;
  max-width: 400px;
}

.login-box h2 {
  margin-bottom: 25px;
  text-align: center;
  font-size: 24px;
}

.login-box label {
  display: block;
  margin: 12px 0 6px;
  font-weight: bold;
}

.login-box input[type="text"],
.login-box input[type="password"] {
  width: 100%;
  padding: 10px;
  font-size: 16px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

.login-box button {
  width: 100%;
  padding: 12px;
  background: #007acc;
  border: none;
  color: white;
  font-size: 16px;
  border-radius: 6px;
  cursor: pointer;
}

.login-box button:hover {
  background: #005fa3;
}

.error {
  background-color: #f8d7da;
  color: #721c24;
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 15px;
  font-size: 14px;
}