.popup-container {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50vh;
  background-color: rgba(255, 255, 255, 0.97);
  box-shadow: 0 -5px 15px rgba(0, 0, 0, 0.2);
  z-index: 9999;
  animation: slideUp 0.5s ease-out;
}

.popup-content {
  padding: 20px;
  max-width: 500px;
  margin: auto;
  text-align: center;
  position: relative;
  top: 50%;
  transform: translateY(-50%);
}

.popup-content input[type="email"] {
  width: 80%;
  padding: 10px;
  margin: 15px 0;
}

.popup-content button {
  padding: 10px 20px;
  background: #007bff;
  border: none;
  color: white;
  cursor: pointer;
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 24px;
  cursor: pointer;
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}