.popup-central {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.popup-central .form-container {
  position: relative; /* impératif */
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  max-width: 400px;
  width: 90%;
}

.popup-central .close-popup {
  position: absolute;
  top: -35px;
  right: 5px;
  font-size: 18px;       /* plus petit */
  font-weight: 900;      /* plus gras */
  color: #fff;
  background-color: #4E73DF;
  border: none;
  border-radius: 50%;
  width: 28px;           /* un peu plus petit */
  height: 28px;
  text-align: center;
  line-height: 28px;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(78, 115, 223, 0.6);
  transition: background-color 0.3s ease, transform 0.2s ease;
  user-select: none;
}

.popup-central .close-popup:hover {
  background-color: #3654b0; /* un bleu plus foncé au hover */
  transform: scale(1.1);
}

.popup-central .close-popup:active {
  transform: scale(0.95);
}

body.popup-open {
  overflow: hidden;
}