.spinner span {
                  display: inline-block;
                  width: 20px;
                  height: 20px;
                  border: 3px solid #ccc;
                  border-top-color: #00cc99;
                  border-radius: 50%;
                  animation: spin 0.8s linear infinite;
                }

                @keyframes spin {
                  to { transform: rotate(360deg); }
                }

                .form-feedback span {
                  display: inline-block;
                  font-weight: 500;
                  transition: opacity 0.3s ease-in-out;
                }

                .form-feedback.show span {
                  opacity: 1;
                }