body {
  background: #f7f9fc;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.login-box {
  width: 100%;
  max-width: 400px;
  padding: 2rem;
  border-radius: 12px;
  background: white;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
}

.btn-primary {
  width: 100%;
}

h2 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: #0d6efd;
  font-weight: 700;
}

.form-control {
  border-radius: 8px;
  border: 1px solid #ced4da;
}

.btn-primary {
  background-color: #0d6efd;
  border: none;
  font-weight: bold;
  padding: 10px;
  transition: background-color 0.3s ease;
}

.btn-primary:hover {
  background-color: #0b5ed7;
}

.alert {
  border-radius: 8px;
  padding: 0.75rem 1rem;
}