body {
  background-color: #f4f6f9;
}
.card {
  border: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.card-header {
  background-color: #fff;
  border-bottom: 1px solid #eee;
  font-weight: 600;
}
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a2733, #334455);
}
.login-card {
  width: 100%;
  max-width: 380px;
}
.categoria-block {
  border: 1px solid #e3e3e3;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}
.categoria-block.activa {
  border-color: #0d6efd;
  background-color: #f0f6ff;
}
.table-sm td, .table-sm th {
  vertical-align: middle;
}