/* พื้นหลังทึบ */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0; top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.5);
  transition: opacity 0.3s ease;
}

/* กล่อง Modal */
.modal-content {
  background-color: #fff;
  margin: 1% auto;
  padding: 20px;
  border-radius: 8px;
  width: 90%;
  
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  animation: fadeIn 0.3s ease-in-out;
  max-width: 800px;;
}

/* ปุ่มปิด */
.close-btn {
  float: right;
  font-size: 24px;
  cursor: pointer;
}

/* Animation */
@keyframes fadeIn {
  from {opacity: 0; transform: translateY(-20px);}
  to {opacity: 1; transform: translateY(0);}
}