#loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9997;
}

.spinner {
    width: 80px;
    height: 80px;
    border: 8px solid #ccc;
    border-top: 8px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

#loading-percent {
    position: absolute;
    color: #fff;
    font-size: 16px;
    font-family: sans-serif;
    font-weight: bold;
}

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