filter: brightness(125%);
        }
    </style>
    <style>
        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.9);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .loading-bar {
            width: 200px;
            height: 4px;
        