/* Centered loading spinner - no background overlay */
#loading-overlay {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    display: none;
    pointer-events: none;  /* Don't block clicks */
}

#loading-overlay.active {
    display: block;
}

/* Spinning loader */
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 122, 255, 0.2);
    border-top: 4px solid #007AFF;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    box-shadow: 0 0 15px rgba(0, 122, 255, 0.3);
}

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