#popup-success {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 9999;
  justify-content: center;
  align-items: center;
}

#popup-success .popup-box {
  background: #fff;
  border-radius: 12px;
  padding: 40px;
  max-width: 450px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

#popup-success .popup-box h3 {
  color: #1a1a1a;
  margin-bottom: 15px;
  font-size: 1.3rem;
}

#popup-success .popup-box p {
  color: #555;
  margin-bottom: 25px;
}

#popup-success .popup-box button {
  background-color: rgb(246, 176, 3);
  border: none;
  padding: 10px 30px;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  font-size: 1rem;
}