/* Global Loading Spinner Styles */
#globalLoadingSpinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Promote to its own compositor layer so the spinner keeps animating even
       while a synchronous (async:false) AJAX request blocks the main thread. */
    will-change: transform;
    transform: translateZ(0);
}

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(2px);
}

.loading-spinner {
    position: relative;
    z-index: 10000;
    background: white;
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    animation: fadeInScale 0.3s ease-out;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.spinner-border {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #4f46e5;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    /* Keep the rotation on the compositor thread so it does not stop while the
       main thread is blocked by a synchronous AJAX request. */
    will-change: transform;
}

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

.loading-text {
    margin: 0;
    color: #333;
    font-size: 16px;
    font-weight: 500;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .loading-spinner {
        padding: 25px 35px;
    }
    
    .spinner-border {
        width: 40px;
        height: 40px;
        border-width: 3px;
    }
    
    .loading-text {
        font-size: 14px;
    }
}