/* Overlay */
       .overlay {
           display: none;
           position: fixed;
           top: 0;
           left: 0;
           width: 100%;
           height: 100%;
           background: rgba(0, 0, 0, 0.7);
           z-index: 1000;
       }

       /* Popup */
.popup-error {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px; /* Atur lebar popup */
    max-width: 90%; /* Responsif untuk layar kecil */
    padding: 20px; /* Spasi dalam popup */
    background: linear-gradient(145deg, #ff7675, #d63031);
    color: #fff;
    border-radius: 30px;
    text-align: center;
    animation: glow 1s infinite alternate;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    z-index: 1100;
    font-size: 16px; /* Ukuran teks popup */
    line-height: 1.5; /* Jarak antar baris teks */
}


       /* Animasi menyala */
       @keyframes glow {
           from {
               box-shadow: 0 0 10px #fdcb6e, 0 0 20px #e17055;
           }
           to {
               box-shadow: 0 0 20px #fab1a0, 0 0 30px #d63031;
           }
       }

       /* Tombol popup */
       .popup-error button {
           margin-top: 15px;
           padding: 10px 20px;
           background-color: #fff;
           color: #d63031;
           font-weight: bold;
           border: none;
           border-radius: 20px;
           cursor: pointer;
           transition: background 0.3s ease;
       }

       .popup-error button:hover {
           background-color: #ffeaa7;
       }