#mobile-popup {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 380px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
  z-index: 9999;
  animation: popupSlideUp 0.4s ease;
  font-family: system-ui, sans-serif;
}

@keyframes popupSlideUp {
  from { transform: translate(-50%, 50%); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

#mobile-popup img {
  width: 100%;
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
}

#mobile-popup h2 {
  font-size: 18px;
  margin: 10px 16px 4px;
}

#mobile-popup p {
  font-size: 14px;
  margin: 0 16px 12px;
  color: #555;
}

#mobile-popup .popup-button {
  display: block;
  margin: 0 16px 16px;
  background: #2196f3;
  color: #fff;
  text-align: center;
  padding: 10px 0;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
}

#mobile-popup .popup-button:hover {
  background: #1976d2;
}

#popup-close {
  position: absolute;
  top: 8px;
  right: 10px;
  background: transparent;
  border: none;
  font-size: 20px;
  color: #777;
  cursor: pointer;
}

.mobile-popup-hidden {
  display: none;
}