.discipline-card {
    background: #f8f9fa;
    border: 1px solid #ced4da;
    border-left: 6px solid #343a40;
    border-radius: 12px;
    margin-bottom: 25px;
    padding: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  }

  .discipline-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #343a40;
    margin-bottom: 15px;
  }

  .theme-link {
    color: #0d6efd;
    text-decoration: none;
    font-weight: 500;
  }

  .theme-link:hover {
    text-decoration: underline;
  }

  .badge-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
  }

  .badge {
    font-size: 0.85rem;
    padding: 0.5em 0.75em;
  }
  .image-top {
    height: 120px;
    width: auto;
  }

/* Gradiente personalizado usando utilitários do Bootstrap */
.btn-gradient {
  background: linear-gradient(135deg, #0d6efd, #0dcaf0);
  color: #fff;
  border: none;
  transition: all 0.3s ease;
}

.btn-gradient:hover {
  background: linear-gradient(135deg, #0dcaf0, #0d6efd);
  transform: scale(1.05);
}