.loader {
    display: none;
    position: fixed;
    left: 50%; 
    top: 50%;
    transform: translate(-50%, -50%); 
    z-index: 9999;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 30px;
    margin: 10px;
    border-radius: 10px;
    text-align: center;
}

.spinner {
    border: 8px solid #f3f3f3; /* Light grey */
    border-top: 8px solid #3498db; /* Blue */
    border-radius: 50%;
    width: 50px; /* Width of the spinner */
    height: 50px; /* Height of the spinner */
    animation: spin 1s linear infinite; /* Spinner animation */
}

.double-ring-loader {
    width: 60px; /* Size of the outer ring */
    height: 60px; /* Size of the outer ring */
    border: 6px solid transparent; /* Use transparent for outer ring */
    border-radius: 50%;
    animation: spin 1s linear infinite; /* Outer ring spin animation */
    position: relative;
}

.double-ring-loader::before {
    content: '';
    width: 60px; /* Size of the inner ring */
    height: 60px; /* Size of the inner ring */
    border: 6px solid transparent; /* Use transparent for inner ring */
    border-radius: 50%;
    position: absolute;
    left: 0;
    top: 0;
    animation: spin 1s linear infinite; /* Inner ring spin animation */
    animation-delay: 0.5s; /* Delay for the second ring */
    border-top-color: #3498db; /* Color for part of the outer ring */
    border-right-color: #e74c3c; /* Color for part of the outer ring */
    border-bottom-color: #f1c40f; /* Color for part of the outer ring */
    border-left-color: #9b59b6; /* Color for part of the outer ring */
}

.double-ring-loader::after {
    content: '';
    width: 60px; /* Size of the inner ring */
    height: 60px; /* Size of the inner ring */
    border: 6px solid transparent; /* Use transparent for inner ring */
    border-radius: 50%;
    position: absolute;
    left: 0;
    top: 0;
    animation: spin 1s linear infinite; /* Inner ring spin animation */
    border-top-color: #2ecc71; /* Color for part of the inner ring */
    border-right-color: #e67e22; /* Color for part of the inner ring */
    border-bottom-color: #1abc9c; /* Color for part of the inner ring */
    border-left-color: #34495e; /* Color for part of the inner ring */
}

/* Spinner animation */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}