.form-success {
  margin: 2rem auto;
  padding: 1.2rem 1.5rem;
  max-width: 600px;
  border-radius: 10px;
  background: #0f1f17; /* sötétebb zöldes háttér */
  border: 1px solid #2de59c;
  color: #2de59c;
  text-align: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
  animation: fadeIn 0.4s ease-in-out;
}

.form-success.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-10px); }
}