app/static/js/main.js

$(document).ready(function() {
    // File handling variables
    let currentFile = null;
    let originalTextContent = null;
    let lastUploadedFileName = null;
    let fileJustUploaded = false;  // Flag to prevent immediate detachment
    let currentModelType = window.tokenizerData?.model_type || 'predefined';
    let currentTokenizerInfo = null;
    
    // Try to parse tokenizer info if available from server
    try {
        currentTokenizerInfo = window.tokenizerData?.tokenizer_info || null;
        if (currentTokenizerInfo) {
            updateTokenizerInfoDisplay(currentTokenizerInfo, currentModelType === 'custom');
        }
    } catch(e) {
        console.error("Error parsing tokenizer info:", e);
    }
    
    // Show error if exists
    if (window.tokenizerData?.error) {
        showError(window.tokenizerData.error);
    }
    
    // Setup model type based on initial state
    if (currentModelType === "custom") {
        $('.toggle-option').removeClass('active');
        $('.custom-toggle').addClass('active');
        $('#predefinedModelSelector').hide();
        $('#customModelSelector').show();
    }
    
    // Show success badge if custom model loaded successfully
    if (currentModelType === "custom" && !window.tokenizerData?.error) {
        $('#modelSuccessBadge').addClass('show');
        setTimeout(() => {
            $('#modelSuccessBadge').removeClass('show');
        }, 3000);
    }

    // Toggle between predefined and custom model inputs
    $('.toggle-option').click(function() {
        const modelType = $(this).data('type');
        $('.toggle-option').removeClass('active');
        $(this).addClass('active');
        currentModelType = modelType;
        
        if (modelType === 'predefined') {
            $('#predefinedModelSelector').show();
            $('#customModelSelector').hide();
            $('#modelTypeInput').val('predefined');
            // Set the model input value to the selected predefined model
            $('#modelInput').val($('#modelSelect').val());
        } else {
            $('#predefinedModelSelector').hide();
            $('#customModelSelector').show();
            $('#modelTypeInput').val('custom');
        }
        
        // Clear tokenizer info if switching models
        if (modelType === 'predefined') {
            $('#tokenizerInfoContent').html('<div class="tokenizer-info-loading"><div class="tokenizer-info-spinner"></div></div>');
            fetchTokenizerInfo($('#modelSelect').val(), false);
        } else {
            $('#customTokenizerInfoContent').html('<div class="tokenizer-info-loading"><div class="tokenizer-info-spinner"></div></div>');
            // Only fetch if there's a custom model value
            const customModel = $('#customModelInput').val();
            if (customModel) {
                fetchTokenizerInfo(customModel, true);
            }
        }
    });
    
    // Update hidden input when custom model input changes
    $('#customModelInput').on('input', function() {
        $('#customModelInputHidden').val($(this).val());
    });

    function showError(message) {
        const errorDiv = $('#errorMessage');
        errorDiv.text(message);
        errorDiv.show();
        setTimeout(() => errorDiv.fadeOut(), 5000);
    }
    
    // Function to update tokenizer info display in tooltip
    function updateTokenizerInfoDisplay(info, isCustom = false) {
        const targetSelector = isCustom ? '#customTokenizerInfoContent' : '#tokenizerInfoContent';
        let htmlContent = '';
        
        
        if (info.error) {
            $(targetSelector).html(`<div class="tokenizer-info-error">${info.error}</div>`);
            return;
        }
        
        // Start building the tooltip content
        htmlContent = `<div class="tokenizer-info-header">Tokenizer Details</div>

                      <div class="tokenizer-info-grid">`;
        
        // Dictionary size
        if (info.vocab_size) {
            htmlContent += `

                <div class="tokenizer-info-item">

                    <span class="tokenizer-info-label">Dictionary Size</span>

                    <span class="tokenizer-info-value">${info.vocab_size.toLocaleString()}</span>

                </div>`;
        }
        
        // Tokenizer type
        if (info.tokenizer_type) {
            htmlContent += `

                <div class="tokenizer-info-item">

                    <span class="tokenizer-info-label">Tokenizer Type</span>

                    <span class="tokenizer-info-value">${info.tokenizer_type}</span>

                </div>`;
        }
        
        
        // Max length
        if (info.model_max_length) {
            htmlContent += `

                <div class="tokenizer-info-item">

                    <span class="tokenizer-info-label">Max Length</span>

                    <span class="tokenizer-info-value">${info.model_max_length.toLocaleString()}</span>

                </div>`;
        }
        
        htmlContent += `</div>`;  // Close tokenizer-info-grid
        
        // Special tokens section
        if (info.special_tokens && Object.keys(info.special_tokens).length > 0) {
            htmlContent += `

                <div class="tokenizer-info-item" style="margin-top: 0.75rem;">

                    <span class="tokenizer-info-label">Special Tokens</span>

                    <div class="special-tokens-container">`;
            
            // Add each special token with proper escaping for HTML special characters
            for (const [tokenName, tokenValue] of Object.entries(info.special_tokens)) {
                // Properly escape HTML special characters
                const escapedValue = tokenValue
                    .replace(/&/g, '&amp;')
                    .replace(/</g, '&lt;')
                    .replace(/>/g, '&gt;')
                    .replace(/"/g, '&quot;')
                    .replace(/'/g, '&#039;');
                    
                htmlContent += `

                    <div class="special-token-item">

                        <span class="token-name">${tokenName}:</span>

                        <span class="token-value">${escapedValue}</span>

                    </div>`;
            }
            
            htmlContent += `

                    </div>

                </div>`;
        }
        
        $(targetSelector).html(htmlContent);
    }
    
    // Function to show loading overlay
    function showLoadingOverlay(text = 'Loading...') {
        $('#loadingText').text(text);
        $('#loadingOverlay').addClass('active');
    }
    
    // Function to hide loading overlay
    function hideLoadingOverlay() {
        $('#loadingOverlay').removeClass('active');
    }

    // Function to fetch tokenizer info
    function fetchTokenizerInfo(modelId, isCustom = false) {
        if (!modelId) return;
        
        const targetSelector = isCustom ? '#customTokenizerInfoContent' : '#tokenizerInfoContent';
        $(targetSelector).html('<div class="tokenizer-info-loading"><div class="tokenizer-info-spinner"></div></div>');
        
        $.ajax({
            url: '/tokenizer-info',
            method: 'GET',
            data: {
                model_id: modelId,
                is_custom: isCustom
            },
            success: function(response) {
                if (response.error) {
                    $(targetSelector).html(`<div class="tokenizer-info-error">${response.error}</div>`);
                } else {
                    currentTokenizerInfo = response;
                    updateTokenizerInfoDisplay(response, isCustom);
                }
            },
            error: function(xhr) {
                $(targetSelector).html('<div class="tokenizer-info-error">Failed to load tokenizer information</div>');
            }
        });
    }

    // Token search functionality
    let searchMatches = [];
    let currentSearchIndex = -1;
    let searchVisible = false;
    
    // Token frequency functionality
    let tokenFrequencyData = [];
    let showFrequencyChart = false;
    
    function performTokenSearch(searchTerm) {
        const tokenContainer = $('#tokenContainer');
        const tokens = tokenContainer.find('.token');
        
        // Clear previous highlights
        tokens.removeClass('highlighted current');
        searchMatches = [];
        currentSearchIndex = -1;
        
        if (!searchTerm.trim()) {
            updateSearchCount();
            return;
        }
        
        const searchLower = searchTerm.toLowerCase();
        
        // Find matching tokens
        tokens.each(function(index) {
            const tokenText = $(this).text().toLowerCase();
            if (tokenText.includes(searchLower)) {
                $(this).addClass('highlighted');
                searchMatches.push(index);
            }
        });
        
        updateSearchCount();
        
        // Navigate to first match if any
        if (searchMatches.length > 0) {
            navigateToMatch(0);
        }
    }
    
    function navigateToMatch(index) {
        if (searchMatches.length === 0) return;
        
        // Remove current highlight
        $('.token.current').removeClass('current');
        
        // Update current index
        currentSearchIndex = index;
        
        // Highlight current match
        const tokenContainer = $('#tokenContainer');
        const tokens = tokenContainer.find('.token');
        const currentToken = tokens.eq(searchMatches[currentSearchIndex]);
        currentToken.addClass('current');
        
        // Scroll to current match - improved logic
        const scrollContainer = tokenContainer;
        const containerOffset = scrollContainer.offset();
        const tokenOffset = currentToken.offset();
        
        if (containerOffset && tokenOffset) {
            const containerHeight = scrollContainer.height();
            const containerScrollTop = scrollContainer.scrollTop();
            const tokenRelativeTop = tokenOffset.top - containerOffset.top;
            
            // Check if token is outside visible area
            if (tokenRelativeTop < 0 || tokenRelativeTop > containerHeight - 50) {
                // Calculate new scroll position to center the token
                const tokenHeight = currentToken.outerHeight();
                const newScrollTop = containerScrollTop + tokenRelativeTop - (containerHeight / 2) + (tokenHeight / 2);
                
                scrollContainer.animate({
                    scrollTop: Math.max(0, newScrollTop)
                }, 400, 'swing');
            }
        }
        
        updateSearchCount();
    }
    
    function toggleSearchVisibility() {
        console.log('toggleSearchVisibility called, current state:', searchVisible);
        searchVisible = !searchVisible;
        const container = $('#tokenSearchContainer');
        const toggleBtn = $('#searchToggleBtn');
        
        console.log('Container found:', container.length, 'Toggle button found:', toggleBtn.length);
        
        if (searchVisible) {
            // Show the container first, then animate
            container.show();
            setTimeout(() => {
                container.addClass('show');
            }, 10);
            toggleBtn.addClass('active');
            console.log('Showing search container');
            setTimeout(() => {
                $('#tokenSearchInput').focus();
            }, 300);
        } else {
            container.removeClass('show');
            toggleBtn.removeClass('active');
            console.log('Hiding search container');
            setTimeout(() => {
                container.hide();
            }, 300);
            // Clear search when hiding
            $('#tokenSearchInput').val('');
            performTokenSearch('');
        }
    }
    
    function updateSearchCount() {
        const countText = searchMatches.length > 0 
            ? `${currentSearchIndex + 1}/${searchMatches.length}`
            : `0/${searchMatches.length}`;
        $('#searchCount').text(countText);
        
        // Update navigation button states
        $('#prevMatch').prop('disabled', searchMatches.length === 0 || currentSearchIndex <= 0);
        $('#nextMatch').prop('disabled', searchMatches.length === 0 || currentSearchIndex >= searchMatches.length - 1);
    }
    
    // Token frequency chart functions
    function calculateTokenFrequency(tokens) {
        const frequencyMap = {};
        
        tokens.each(function() {
            const tokenText = $(this).text();
            if (tokenText.trim()) {
                frequencyMap[tokenText] = (frequencyMap[tokenText] || 0) + 1;
            }
        });
        
        // Convert to array and sort by frequency
        const frequencyArray = Object.entries(frequencyMap)
            .map(([token, count]) => ({ token, count }))
            .sort((a, b) => b.count - a.count)
            .slice(0, 10); // Top 10 tokens
        
        return frequencyArray;
    }
    
    function renderFrequencyChart(frequencyData) {
        const chartContainer = $('#frequencyChart');
        chartContainer.empty();
        
        if (frequencyData.length === 0) {
            chartContainer.html('<div style="text-align: center; color: var(--secondary-text); padding: 1rem;">No token data available</div>');
            return;
        }
        
        const maxCount = frequencyData[0].count;
        
        frequencyData.forEach(({ token, count }) => {
            const percentage = (count / maxCount) * 100;
            
            const item = $(`

                <div class="frequency-item">

                    <div class="frequency-token" data-token="${token}">${token}</div>

                    <div class="frequency-bar-container">

                        <div class="frequency-bar">

                            <div class="frequency-bar-fill" style="width: ${percentage}%"></div>

                        </div>

                        <div class="frequency-count">${count}</div>

                    </div>

                </div>

            `);
            
            // Add click handler to search for this token
            item.find('.frequency-token').click(function() {
                const searchToken = $(this).data('token');
                $('#tokenSearchInput').val(searchToken);
                performTokenSearch(searchToken);
            });
            
            chartContainer.append(item);
        });
    }
    
    function toggleFrequencyChart() {
        showFrequencyChart = !showFrequencyChart;
        const container = $('#frequencyChartContainer');
        const chart = $('#frequencyChart');
        const toggleBtn = $('#toggleFrequencyChart');
        
        if (showFrequencyChart) {
            container.show();
            chart.show();
            toggleBtn.text('Hide Chart').addClass('active');
            
            // Calculate and render frequency data
            const tokens = $('#tokenContainer').find('.token');
            tokenFrequencyData = calculateTokenFrequency(tokens);
            renderFrequencyChart(tokenFrequencyData);
        } else {
            chart.hide();
            toggleBtn.text('Show Chart').removeClass('active');
        }
    }
    
    function updateResults(data) {
        $('#results').show();
        
        // Show search toggle button and frequency chart container
        $('#searchToggleBtn').show();
        $('#frequencyChartContainer').show();
        
        // Update tokens
        const tokenContainer = $('#tokenContainer');
        tokenContainer.empty();
        data.tokens.forEach(token => {
            const span = $('<span>')
                .addClass('token')
                .css({
                    'background-color': token.colors.background,
                    'color': token.colors.text
                })
                // Include token id in the tooltip on hover
                .attr('title', `Original token: ${token.original} | Token ID: ${token.token_id}`)
                .text(token.display);
            
            tokenContainer.append(span);
            if (token.newline) {
                tokenContainer.append('<br>');
            }
        });
        
        // Re-apply current search if any
        const currentSearch = $('#tokenSearchInput').val();
        if (currentSearch.trim()) {
            performTokenSearch(currentSearch);
        }

        // Update display limit notice
        if (data.display_limit_reached) {
            $('#displayLimitNotice').show();
            $('#totalTokenCount').text(data.total_tokens);
        } else {
            $('#displayLimitNotice').hide();
        }

        // Update preview notice
        if (data.preview_only) {
            $('#previewNotice').show();
        } else {
            $('#previewNotice').hide();
        }

        // Update basic stats
        $('#totalTokens').text(data.stats.basic_stats.total_tokens);
        $('#uniqueTokens').text(`${data.stats.basic_stats.unique_tokens} unique`);
        $('#uniquePercentage').text(data.stats.basic_stats.unique_percentage);
        $('#specialTokens').text(data.stats.basic_stats.special_tokens);
        $('#spaceTokens').text(data.stats.basic_stats.space_tokens);
        $('#spaceCount').text(data.stats.basic_stats.space_tokens);
        $('#newlineCount').text(data.stats.basic_stats.newline_tokens);
        $('#compressionRatio').text(data.stats.basic_stats.compression_ratio);

        // Update length stats
        $('#avgLength').text(data.stats.length_stats.avg_length);
        $('#medianLength').text(data.stats.length_stats.median_length);
        $('#stdDev').text(data.stats.length_stats.std_dev);
        
        // Update tokenizer info if available
        if (data.tokenizer_info) {
            currentTokenizerInfo = data.tokenizer_info;
            updateTokenizerInfoDisplay(data.tokenizer_info, currentModelType === 'custom');
        }
    }

    // Handle text changes to detach file
    $('#textInput').on('input', function() {
        // Skip if file was just uploaded (prevents immediate detachment)
        if (fileJustUploaded) {
            fileJustUploaded = false;
            return;
        }
        
        const currentText = $(this).val();
        const fileInput = document.getElementById('fileInput');
        
        // Only detach if a file exists and text has been substantially modified
        if (fileInput.files.length > 0 && originalTextContent !== null) {
            // Check if the text is completely different or has been significantly changed
            // This allows for small edits without detaching
            const isMajorChange = 
                currentText.length < originalTextContent.length * 0.8 || // Text reduced by at least 20%
                (currentText.length > 0 && 
                 currentText !== originalTextContent.substring(0, currentText.length) && 
                 currentText.substring(0, Math.min(20, currentText.length)) !== 
                 originalTextContent.substring(0, Math.min(20, currentText.length)));
            
            if (isMajorChange) {
                detachFile();
            }
        }
    });
    
    // Function to detach file
    function detachFile() {
        // Clear the file input
        $('#fileInput').val('');
        // Hide file info
        $('#fileInfo').fadeOut(300);
        // Reset the original content tracker
        originalTextContent = $('#textInput').val();
        // Reset last uploaded filename
        lastUploadedFileName = null;
    }
    
    // For model changes
    $('#modelSelect').change(function() {
        const selectedModel = $(this).val();
        $('#modelInput').val(selectedModel);
        
        // Fetch tokenizer info for the selected model
        fetchTokenizerInfo(selectedModel, false);
        
        // If text exists, submit the form
        if ($('#textInput').val().trim()) {
            $('#analyzeForm').submit();
        }
    });

    // File drop handling
    const fileDropZone = $('#fileDropZone');
    const fileUploadIcon = $('#fileUploadIcon');
    
    // Prevent default drag behaviors
    ['dragenter', 'dragover', 'dragleave', 'drop'].forEach(eventName => {
        fileDropZone[0].addEventListener(eventName, preventDefaults, false);
        document.body.addEventListener(eventName, preventDefaults, false);
    });
    
    function preventDefaults(e) {
        e.preventDefault();
        e.stopPropagation();
    }

    // Show drop zone when file is dragged over the document
    document.addEventListener('dragenter', showDropZone, false);
    document.addEventListener('dragover', showDropZone, false);
    
    fileDropZone[0].addEventListener('dragleave', hideDropZone, false);
    fileDropZone[0].addEventListener('drop', hideDropZone, false);
    
    function showDropZone(e) {
        fileDropZone.addClass('active');
    }
    
    function hideDropZone() {
        fileDropZone.removeClass('active');
    }

    // Handle dropped files
    fileDropZone[0].addEventListener('drop', handleDrop, false);
    
    function handleDrop(e) {
        const dt = e.dataTransfer;
        const files = dt.files;
        handleFiles(files);
    }
    
    // Also handle file selection via click on the icon
    fileUploadIcon.on('click', function() {
        const input = document.createElement('input');
        input.type = 'file';
        input.onchange = e => {
            handleFiles(e.target.files);
        };
        input.click();
    });
    
    function handleFiles(files) {
        if (files.length) {
            const file = files[0];
            currentFile = file;
            lastUploadedFileName = file.name;
            fileJustUploaded = true; // Set flag to prevent immediate detachment
            
            // Show file info with animation and add detach button
            $('#fileInfo').html(`${file.name} (${formatFileSize(file.size)}) <span class="file-detach" id="fileDetach"><i class="fas fa-times"></i></span>`).fadeIn(300);
            
            // Add click handler for detach button
            $('#fileDetach').on('click', function(e) {
                e.stopPropagation(); // Prevent event bubbling
                detachFile();
                return false;
            });
            
            // Set the file to the file input
            const dataTransfer = new DataTransfer();
            dataTransfer.items.add(file);
            document.getElementById('fileInput').files = dataTransfer.files;
            
            // Preview in textarea (first 8096 chars)
            const reader = new FileReader();
            reader.onload = function(e) {
                const previewText = e.target.result.slice(0, 8096);
                $('#textInput').val(previewText);
                
                // Store this as the original content AFTER setting the value
                // to prevent the input event from firing and detaching immediately
                setTimeout(() => {
                    originalTextContent = previewText;
                    // Automatically submit for analysis
                    $('#analyzeForm').submit();
                }, 50);
            };
            reader.readAsText(file);
        }
    }
    
    function formatFileSize(bytes) {
        if (bytes < 1024) return bytes + ' bytes';
        else if (bytes < 1048576) return (bytes / 1024).toFixed(1) + ' KB';
        else return (bytes / 1048576).toFixed(1) + ' MB';
    }

    // Make sure to check if there's still a file when analyzing
    $('#analyzeForm').on('submit', function(e) {
        e.preventDefault();
        
        // Skip detachment check if file was just uploaded
        if (!fileJustUploaded) {
            // Check if text has been changed but file is still attached
            const textInput = $('#textInput').val();
            const fileInput = document.getElementById('fileInput');
            
            if (fileInput.files.length > 0 && 
                originalTextContent !== null && 
                textInput !== originalTextContent && 
                textInput.length < originalTextContent.length * 0.8) {
                // Text was significantly changed but file is still attached, detach it
                detachFile();
            }
        } else {
            // Reset flag after first submission
            fileJustUploaded = false;
        }
        
        // Update the hidden inputs based on current model type
        if (currentModelType === 'custom') {
            $('#customModelInputHidden').val($('#customModelInput').val());
        } else {
            $('#modelInput').val($('#modelSelect').val());
        }
        
        const formData = new FormData(this);
        const analyzeButton = $('#analyzeButton');
        const originalButtonText = analyzeButton.text();
        
        analyzeButton.prop('disabled', true);
        analyzeButton.html(originalButtonText + '<span class="loading-spinner"></span>');
        showLoadingOverlay('Analyzing text...');
        
        $.ajax({
            url: '/',
            method: 'POST',
            data: formData,
            processData: false,
            contentType: false,
            success: function(response) {
                if (response.error) {
                    showError(response.error);
                } else {
                    updateResults(response);
                    
                    // Show success badge if custom model
                    if (currentModelType === 'custom') {
                        $('#modelSuccessBadge').addClass('show');
                        setTimeout(() => {
                            $('#modelSuccessBadge').removeClass('show');
                        }, 3000);
                    }
                }
            },
            error: function(xhr) {
                showError(xhr.responseText || 'An error occurred while processing the text');
            },
            complete: function() {
                analyzeButton.prop('disabled', false);
                analyzeButton.text(originalButtonText);
                hideLoadingOverlay();
            }
        });
    });

    $('#expandButton').click(function() {
        const container = $('#tokenContainer');
        const isExpanded = container.hasClass('expanded');
        
        container.toggleClass('expanded');
        $(this).text(isExpanded ? 'Show More' : 'Show Less');
    });
    
    // Initialize tokenizer info for current model
    if (currentModelType === 'predefined') {
        fetchTokenizerInfo($('#modelSelect').val(), false);
    } else if ($('#customModelInput').val()) {
        fetchTokenizerInfo($('#customModelInput').val(), true);
    }
    
    // Add event listener for custom model input
    $('#customModelInput').on('change', function() {
        const modelValue = $(this).val();
        if (modelValue) {
            fetchTokenizerInfo(modelValue, true);
        }
    });
    
    // Keyboard shortcuts - specifically for textarea
    $('#textInput').keydown(function(e) {
        // Ctrl+Enter (or Cmd+Enter on Mac) to analyze
        if ((e.ctrlKey || e.metaKey) && (e.keyCode === 13 || e.which === 13)) {
            e.preventDefault();
            if ($(this).val().trim()) {
                $('#analyzeForm').submit();
            }
            return false;
        }
    });
    
    // Global keyboard shortcuts
    $(document).keydown(function(e) {
        // Ctrl+F (or Cmd+F on Mac) to toggle search
        if ((e.ctrlKey || e.metaKey) && (e.keyCode === 70 || e.which === 70)) {
            if ($('#searchToggleBtn').is(':visible')) {
                e.preventDefault();
                if (!searchVisible) {
                    toggleSearchVisibility();
                } else {
                    $('#tokenSearchInput').focus();
                }
                return false;
            }
        }
        
        // Escape to close search or loading overlay
        if (e.keyCode === 27 || e.which === 27) {
            if (searchVisible) {
                toggleSearchVisibility();
                return false;
            }
            if ($('#loadingOverlay').hasClass('active')) {
                // Don't close if there's an active request
                return false;
            }
        }
    });
    
    // Add keyboard shortcut hint to the textarea placeholder
    $('#textInput').attr('placeholder', 'Enter text to analyze or upload a file in bottom left corner... (Ctrl+Enter to analyze)');
    
    // Token search event handlers
    $('#tokenSearchInput').on('input', function() {
        const searchTerm = $(this).val();
        performTokenSearch(searchTerm);
    });
    
    $('#nextMatch').click(function() {
        if (currentSearchIndex < searchMatches.length - 1) {
            navigateToMatch(currentSearchIndex + 1);
        }
    });
    
    $('#prevMatch').click(function() {
        if (currentSearchIndex > 0) {
            navigateToMatch(currentSearchIndex - 1);
        }
    });
    
    $('#clearSearch').click(function() {
        $('#tokenSearchInput').val('');
        performTokenSearch('');
    });
    
    // Additional keyboard shortcuts for search
    $('#tokenSearchInput').keydown(function(e) {
        if (e.keyCode === 13) { // Enter
            e.preventDefault();
            if (e.shiftKey) {
                // Shift+Enter: previous match
                $('#prevMatch').click();
            } else {
                // Enter: next match
                $('#nextMatch').click();
            }
        } else if (e.keyCode === 27) { // Escape
            $('#clearSearch').click();
            $(this).blur();
        }
    });
    
    // Search toggle handler using event delegation
    $(document).on('click', '#searchToggleBtn', function(e) {
        console.log('Search toggle button clicked!');
        e.preventDefault();
        e.stopPropagation();
        toggleSearchVisibility();
        return false;
    });
    
    // Frequency chart toggle handler
    $('#toggleFrequencyChart').click(function() {
        toggleFrequencyChart();
    });
    
    // Mobile touch enhancements
    function addTouchSupport() {
        // Add touch-friendly double-tap for expand/collapse
        let lastTap = 0;
        $('#tokenContainer').on('touchend', function(e) {
            const currentTime = new Date().getTime();
            const tapLength = currentTime - lastTap;
            if (tapLength < 500 && tapLength > 0) {
                $('#expandButton').click();
                e.preventDefault();
            }
            lastTap = currentTime;
        });
        
        // Improve touch scrolling for token container
        $('#tokenContainer').on('touchstart', function(e) {
            this.scrollTop = this.scrollTop;
        });
    }
    
    // Check if mobile device and add touch support
    if ('ontouchstart' in window || navigator.maxTouchPoints > 0) {
        addTouchSupport();
    }
});