#loadingOverlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.spinner {
    border: 8px solid #f3f3f3;
    border-top: 8px solid #3498db;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    color: white;
    margin-top: 20px;
    font-size: 18px;
}

#imagePreview {
    display: none;
    margin-top: 15px;
    max-width: 100%;
    max-height: 300px;
    border: 2px solid #dee2e6;
    border-radius: 8px;
}

.file-info {
    margin-top: 10px;
    font-size: 14px;
    color: #6c757d;
}

.validation-error {
    color: #dc3545;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}