#cover-spin {
    position: fixed;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.7);
    z-index: 9999;
    display: none;
    overflow: hidden; /* Mencegah scroll saat loader muncul */
}

.spinner {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
}

.spinner div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 48px;
    height: 48px;
    margin: 6px;
    border: 6px solid #3498db;
    border-radius: 50%;
    animation: spinner 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: #3498db transparent transparent transparent;
}

.spinner div:nth-child(1) {
    animation-delay: -0.45s;
}

.spinner div:nth-child(2) {
    animation-delay: -0.3s;
}

.spinner div:nth-child(3) {
    animation-delay: -0.15s;
}

@keyframes spinner {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}