.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.popup-overlay.active {
  visibility: visible;
  opacity: 1;
}

.popup-content {
  position: relative;
  background: white;
  padding: 20px;
  border-radius: 8px;
  text-align: center;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.popup-content h2 {
  margin-bottom: 10px;
  font-size: 2.5rem;
  font-weight: bold;
  color: red;
}

.popup-content p {
  margin-bottom: 20px;
  font-size: 2rem;
}

.popup-content button {
  position: absolute;
  top: 10px;
  right: 10px;
  background: red;
  color: white;
  border: none;
  padding: 7px 14px;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 700;
}

.btn-km {
  background: red;
  display: block;
  text-align: center;
  padding: 20px 30px;
  font-size: 2rem;
  border-radius: 10px;
  color: #fff;
}

.btn-km:hover {
  opacity: 0.7;
  cursor: pointer;
}