.inapp-browser-popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999999;
}

.inapp-browser-popup-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  pointer-events: none; /* Không cho tắt popup khi click vào overlay */
}

.inapp-browser-popup-box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  border-radius: 12px;
  padding: 28px 24px;
  width: 90%;
  max-width: 360px;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.25);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
}

.inapp-browser-popup-close {
  position: absolute;
  top: 8px;
  right: 12px;
  background: none;
  border: none;
  font-size: 24px;
  line-height: 1;
  color: #888;
  cursor: pointer;
}

.inapp-browser-popup-icon {
  font-size: 36px;
  margin-bottom: 8px;
}

.inapp-browser-popup-box h3 {
  margin: 0 0 12px;
  font-size: 18px;
  color: #222;
}

.inapp-browser-popup-box p {
  font-size: 14px;
  color: #555;
  line-height: 1.5;
  margin: 0 0 10px;
}

.inapp-browser-popup-instruction {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #eee;
}

.inapp-browser-btn {
  background: #1a73e8;
  color: #fff;
  border: none;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
  width: 100%;
}

.inapp-browser-btn:active {
  background: #1558b3;
}