/* Custom authentication styles */
.form-control:invalid {
  border-color: #dc3545;
}

.form-control:valid {
  border-color: #28a745;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.alert {
  padding: 12px 16px;
  border-radius: 4px;
  margin-bottom: 20px;
  border: 1px solid transparent;
}

.alert-success {
  color: #155724;
  background-color: #d4edda;
  border-color: #c3e6cb;
}

.alert-danger {
  color: #721c24;
  background-color: #f8d7da;
  border-color: #f5c6cb;
}

.alert-info {
  color: #0c5460;
  background-color: #d1ecf1;
  border-color: #bee5eb;
}

/* Loading spinner for buttons */
.btn-loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
  margin-left: 8px;
}

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