/**
 * Visual Modes: Nachtsicht (NVG), FLIR Thermal, CRT Scanlines.
 */
const VisualModes = {
    _current: 'standard',
    _overlay: null,

    init() {
        this._overlay = document.getElementById('visual-overlay');
    },

    set(mode) {
        this._current = mode;
        var container = document.getElementById('cesiumContainer');
        var overlay = this._overlay;

        // Alle Mode-Klassen entfernen
        container.className = '';
        if (overlay) { overlay.className = 'visual-overlay'; overlay.style.display = 'none'; }

        switch (mode) {
            case 'nvg':
                container.className = 'vmode-nvg';
                break;
            case 'flir':
                container.className = 'vmode-flir';
                break;
            case 'crt':
                container.className = 'vmode-crt';
                if (overlay) { overlay.className = 'visual-overlay vmode-crt-overlay'; overlay.style.display = 'block'; }
                break;
            default:
                break;
        }

        // Button-States aktualisieren
        document.querySelectorAll('.vmode-btn, .vmode-btn-sm').forEach(function(btn) {
            btn.classList.toggle('active', btn.dataset.mode === mode);
        });
    },
};