body {
  background-color: #f4f6f9;
}
[data-bs-theme="dark"] body {
  background-color: #15181d;
}
.login-bg {
  background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
}
.portal-card {
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.portal-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.1) !important;
}