.mb-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99998;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
.mb-popup {
  background: #fff;
  color: #333;
  padding: 22px 26px;
  border-radius: 10px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  max-width: 360px;
  text-align: center;
  position: relative;
  animation: fadeIn .3s ease-in-out;
}
.mb-popup h3 {
  font-size: 18px;
  margin: 0 0 8px;
}
.mb-popup p {
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
}
.mb-popup .mb-close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: none;
  border: none;
  font-size: 22px;
  color: #666;
  cursor: pointer;
}
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}