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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="theme-color" content="#2563eb">
<title>SA Crash Data Map 2012-2024</title>
<!-- Web App Manifest -->
<link rel="manifest" href="manifest.json">
<!-- Icons -->
<link rel="icon" type="image/svg+xml" href="saroadcrashmap-icon.svg">
<link rel="apple-touch-icon" href="saroadcrashmap-icon.svg">
<!-- Inter Font for Professional Typography -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<!-- CDN Resource Hints for Performance -->
<link rel="preconnect" href="https://unpkg.com" crossorigin>
<link rel="preconnect" href="https://cdn.jsdelivr.net" crossorigin>
<link rel="preconnect" href="https://cdnjs.cloudflare.com" crossorigin>
<link rel="dns-prefetch" href="https://unpkg.com">
<link rel="dns-prefetch" href="https://cdn.jsdelivr.net">
<link rel="dns-prefetch" href="https://cdnjs.cloudflare.com">
<link rel="dns-prefetch" href="https://server.arcgisonline.com">
<link rel="dns-prefetch" href="https://tile.openstreetmap.org">
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
<!-- Leaflet CSS -->
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" />
<!-- Leaflet MarkerCluster CSS -->
<link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster@1.5.3/dist/MarkerCluster.css" />
<link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster@1.5.3/dist/MarkerCluster.Default.css" />
<!-- noUiSlider CSS -->
<link rel="stylesheet" href="https://unpkg.com/nouislider@15.7.1/dist/nouislider.min.css">
<!-- Leaflet Draw CSS -->
<link rel="stylesheet" href="https://unpkg.com/leaflet-draw@1.0.4/dist/leaflet.draw.css" />
<!-- Custom Styles -->
<link rel="stylesheet" href="styles.css">
</head>
<body>
<!-- First Visit Disclaimer Acknowledgment -->
<div id="firstVisitOverlay" class="first-visit-overlay" style="display: none;">
<div class="first-visit-popup">
<h2>Welcome to SA Crash Data Map</h2>
<p>Before using this application, please acknowledge that you have read and understood the disclaimer.</p>
<p>This tool provides crash data visualization for educational and informational purposes only.</p>
<div class="first-visit-actions">
<a href="#" onclick="openInfoModal('disclaimerModal'); return false;" class="view-disclaimer-link">View Full Disclaimer</a>
<button onclick="acknowledgeDisclaimer()" class="acknowledge-btn">I Acknowledge</button>
</div>
</div>
</div>
<div id="map"></div>
<!-- Draw-mode hint — shown via .draw-mode-active on <body> -->
<div id="drawModeHint" class="draw-mode-hint">
<span class="draw-mode-hint-text"></span>
<button class="draw-mode-cancel-btn" onclick="cancelDrawMode()">Cancel</button>
</div>
<!-- No results overlay (shown when active filters produce 0 crashes) -->
<div id="noResultsOverlay" class="no-results-overlay" style="display:none;">
<div class="no-results-content">
<div class="no-results-icon">⚲</div>
<div class="no-results-title">No crashes found</div>
<div class="no-results-sub">Try broadening your filters or clearing the search.</div>
</div>
</div>
<button class="toggle-panel-btn" onclick="togglePanel()" aria-label="Open filters panel">☰ Filters</button>
<!-- Backdrop: dims the map when the mobile bottom-sheet panel is open.
Tapping it calls togglePanel() to close the sheet. -->
<div class="mobile-panel-backdrop" onclick="togglePanel()" aria-hidden="true"></div>
<!-- Active Filters Badge -->
<div class="active-filters-bar" id="activeFiltersBar">
<div class="active-filters-bar-header"
onclick="toggleActiveFiltersBar()"
onkeydown="if(event.key==='Enter'||event.key===' '){event.preventDefault();toggleActiveFiltersBar();}"
role="button"
tabindex="0"
aria-expanded="false"
aria-controls="activeFiltersContent">
<span class="active-filters-bar-title">🔍 No filters</span>
<span class="active-filters-bar-chevron" aria-hidden="true">▾</span>
</div>
<div class="active-filters-bar-content" id="activeFiltersContent">
<div class="no-active-filters">No filters applied</div>
</div>
</div>
<div class="controls-panel" id="controlsPanel">
<div class="panel-header">
<span>Explorer</span>
<div class="flex-gap-small">
<button class="help-btn" onclick="openTutorial()" title="Open Usage Guide">
<span>?</span>
</button>
<button class="theme-toggle-btn" onclick="toggleTheme()" title="Toggle Light/Dark Mode">
<span id="themeIcon">☀️</span>
</button>
<button class="collapse-btn" onclick="togglePanelCollapse()" title="Collapse/Expand">
<span id="collapseIcon">▲</span>
</button>
<!-- Mobile-only: explicit close button since the collapse button
is hidden and the FAB is not visible while the sheet is open -->
<button class="mobile-panel-close-btn" onclick="togglePanel()" aria-label="Close filters panel">✕</button>
</div>
</div>
<div class="panel-content">
<!-- Spatial Filters - Side by Side -->
<div class="spatial-filters-row section-divider">
<!-- Location Search -->
<div class="filter-group spatial-filter-col">
<div class="location-search-header" onclick="toggleLocationSearch()">
<span class="header-text">🔍 Search</span>
<span class="toggle-icon">▼</span>
</div>
<div class="location-search-content" id="locationSearchContent">
<div class="location-search-inner">
<input type="text" id="locationSearch" placeholder="Enter suburb, street, or landmark..."
autocomplete="off"
oninput="handleLocationInput(this.value)"
onkeydown="handleLocationKeydown(event)"
aria-label="Search for crashes by location"
class="location-search-input">
<div class="location-suggestions" id="locationSuggestions"></div>
<div class="radius-container">
<label class="radius-label" for="searchRadius">Radius:</label>
<select id="searchRadius" class="radius-select" aria-label="Search radius in kilometers">
<option value="0.5">0.5 km</option>
<option value="1">1 km</option>
<option value="2" selected>2 km</option>
<option value="3">3 km</option>
<option value="5">5 km</option>
<option value="7">7 km</option>
<option value="10">10 km</option>
<option value="15">15 km</option>
<option value="20">20 km</option>
<option value="25">25 km</option>
<option value="50">50 km</option>
</select>
</div>
<div class="button-row">
<button onclick="searchByLocation()" class="apply-filters-btn button-row-item" aria-label="Search for crashes within radius">Search</button>
<button id="gpsBtn" onclick="useMyLocation()" class="apply-filters-btn button-row-item gps-btn" aria-label="Use device GPS to find crashes near me" title="Use my GPS location">📍 GPS</button>
<button onclick="clearLocationSearch()" class="clear-filters-btn button-row-item" aria-label="Clear location search">Clear</button>
</div>
<div id="searchResults" class="search-results-box hidden"></div>
</div>
</div>
</div>
<!-- Draw Area -->
<div class="filter-group spatial-filter-col">
<div class="location-search-header" onclick="toggleDrawAreaSection()">
<span class="header-text">📐 Draw Area</span>
<span class="toggle-icon" id="drawAreaToggleIcon">▼</span>
</div>
<div class="location-search-content" id="drawAreaContent">
<div class="location-search-inner">
<p class="help-text-small" style="margin:0 0 10px;color:var(--text-secondary);">Draw a custom area</p>
<div class="button-row" style="gap:6px;">
<button onclick="startDrawArea('rectangle')" class="draw-area-btn button-row-item" id="drawRectBtn">
<span style="font-size:14px;">▭</span> Rectangle
</button>
<button onclick="startDrawArea('polygon')" class="draw-area-btn button-row-item" id="drawPolyBtn">
<span style="font-size:14px;">△</span> Polygon
</button>
</div>
<div id="drawAreaStatus" class="draw-area-status" style="display:none;"></div>
<button id="drawAreaClearBtn" onclick="clearDrawArea()" class="clear-filters-btn" style="display:none;width:100%;margin-top:8px;">Clear Area</button>
</div>
</div>
</div>
</div>
<!-- Basic Filters Group -->
<div class="basic-filters-group">
<div class="filter-group">
<label class="filter-label">Year Range: <span id="yearRangeDisplay">2012 - 2024</span></label>
<div id="yearRangeSlider" class="year-range-slider-container"></div>
</div>
<div class="filter-group">
<label class="filter-label">Crash Severity</label>
<div class="checkbox-dropdown" id="severityDropdown">
<div class="checkbox-dropdown-trigger">
<span id="severityDisplay">All Severities</span>
<span class="dropdown-arrow">▼</span>
</div>
<div class="checkbox-dropdown-menu" id="severityMenu">
<div class="dropdown-search-wrap">
<input type="text" class="dropdown-search" placeholder="Search...">
</div>
<div class="dropdown-items-list" id="severityItemsList">
<div class="checkbox-dropdown-item">
<input type="checkbox" id="severity-pdo" value="1: PDO" checked>
<label for="severity-pdo">PDO (Property Damage Only)</label>
</div>
<div class="checkbox-dropdown-item">
<input type="checkbox" id="severity-mi" value="2: MI" checked>
<label for="severity-mi">Minor Injury</label>
</div>
<div class="checkbox-dropdown-item">
<input type="checkbox" id="severity-si" value="3: SI" checked>
<label for="severity-si">Serious Injury</label>
</div>
<div class="checkbox-dropdown-item">
<input type="checkbox" id="severity-fatal" value="4: Fatal" checked>
<label for="severity-fatal">Fatal</label>
</div>
</div>
<div class="checkbox-dropdown-controls">
<button class="checkbox-select-all">Select All</button>
<button class="checkbox-clear-all">Clear All</button>
</div>
</div>
</div>
</div>
<div class="filter-group">
<label class="filter-label">Crash Type</label>
<div class="checkbox-dropdown" id="crashTypeDropdown">
<div class="checkbox-dropdown-trigger">
<span id="crashTypeDisplay">All Types</span>
<span class="dropdown-arrow">▼</span>
</div>
<div class="checkbox-dropdown-menu" id="crashTypeMenu">
<!-- Options will be populated by filters.js -->
</div>
</div>
</div>
<div class="filter-group">
<label class="filter-label">Area</label>
<div class="checkbox-dropdown" id="areaDropdown">
<div class="checkbox-dropdown-trigger">
<span id="areaDisplay">All Areas</span>
<span class="dropdown-arrow">▼</span>
</div>
<div class="checkbox-dropdown-menu" id="areaMenu">
<!-- Options will be populated by filters.js -->
</div>
</div>
</div>
<div class="filter-group">
<label class="filter-label">Suburb</label>
<div class="checkbox-dropdown" id="suburbDropdown">
<div class="checkbox-dropdown-trigger">
<span id="suburbDisplay">All Suburbs</span>
<span class="dropdown-arrow">▼</span>
</div>
<div class="checkbox-dropdown-menu" id="suburbMenu">
<!-- Options will be populated by filters.js -->
</div>
</div>
</div>
<button class="advanced-filters-btn" onclick="openAdvancedFilters()">
🔧 Advanced Filters
<span id="advancedFilterBadge" class="filter-badge hidden">0</span>
</button>
</div>
<!-- Sample Filter Presets -->
<div class="filter-group preset-selector-group">
<label class="filter-label">📋 Sample Filters</label>
<select id="filterPresets" onchange="applyPreset(this.value)" class="preset-select">
<option value="">-- Select an Example --</option>
<option value="fatal-recent">Fatal Crashes (2023-2024)</option>
<option value="motorcycle-night">Rider Crashes at Night</option>
<option value="dui-crashes">DUI-Related Crashes</option>
<option value="heavy-vehicle">Heavy Vehicle Crashes</option>
<option value="pedestrian">Pedestrian Casualties</option>
<option value="wet-weather">Wet Weather Crashes</option>
<option value="weekend">Weekend Crashes</option>
<option value="hit-object">Hit Fixed Object Crashes</option>
<option value="young-drivers">Young Driver Crashes (Under 26)</option>
</select>
<div class="preset-description" id="presetDescription"></div>
</div>
<button class="apply-filters-btn" id="applyFilters" onclick="applyFilters()">Apply Filters</button>
<button class="clear-filters-btn" onclick="clearFilters()">Clear Filters</button>
<button onclick="shareCurrentView()" class="share-view-btn">
🔗 Share Current View
</button>
<div class="layer-controls">
<div class="filter-label map-layers-label">Map Layers</div>
<div class="layer-toggle active" id="markersToggle" onclick="toggleLayer('markers')">
<span>🎯 Markers</span>
<span id="markersStatus">ON</span>
</div>
<div class="layer-toggle" id="densityToggle" onclick="toggleLayer('density')">
<div class="layer-label-container">
<span>💠 Point Density</span>
<div class="layer-info-icon" onclick="event.stopPropagation()" tabindex="0" role="button" aria-label="Layer info">
ⓘ
<div class="layer-info-tooltip">
Best viewed on <strong>Dark</strong> basemap
</div>
</div>
</div>
<span id="densityStatus">OFF</span>
</div>
<div class="layer-toggle" id="choroplethToggle">
<div class="layer-label-container layer-label-flex" onclick="toggleLayer('choropleth')">
<span>🗺️ Choropleth</span>
</div>
<div class="choropleth-mode-pill">
<button id="choroplethModeLGA" class="choropleth-mode-btn active" onclick="switchChoroplethMode('lga')">LGA</button>
<button id="choroplethModeSuburb" class="choropleth-mode-btn" onclick="switchChoroplethMode('suburb')" disabled title="Loading suburb boundaries...">Suburb</button>
</div>
<span id="choroplethStatus" onclick="toggleLayer('choropleth')">OFF</span>
</div>
</div>
<!-- Marker Colour Mode -->
<div class="filter-group" style="margin-top:8px;">
<label class="filter-label">Colour Markers By</label>
<select id="markerColorModeSelect" onchange="setMarkerColorMode(this.value)" style="width:100%;margin-bottom:6px;">
<option value="severity">Severity</option>
<option value="crashtype">Crash Type</option>
<option value="daynight">Day / Night</option>
</select>
<div id="markerColorLegend" class="marker-color-legend"></div>
</div>
<div class="stats-panel">
<h3>Statistics</h3>
<div class="stat-item">
<span>Total Crashes:</span>
<span class="stat-value" id="totalCrashes">0</span>
</div>
<div class="stat-item">
<span>Fatalities:</span>
<span class="stat-value" id="totalFatalities">0</span>
</div>
<div class="stat-item">
<span>Serious Injuries:</span>
<span class="stat-value" id="totalSerious">0</span>
</div>
<div class="stat-item">
<span>Minor Injuries:</span>
<span class="stat-value" id="totalMinor">0</span>
</div>
<button class="export-btn" onclick="exportFilteredData()" title="Export filtered crash data to CSV" aria-label="Export filtered crash data to CSV file">
Export to CSV
</button>
<button class="export-btn" onclick="openPdfExportModal()" title="Export customizable PDF report with charts and statistics" aria-label="Export PDF report" style="margin-top:6px;">
Export to PDF
</button>
<button class="export-btn" onclick="toggleDataTable()" title="View filtered crashes as a sortable table" aria-label="Open data table to view and sort filtered crashes" style="margin-top:6px;background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border);">
View Data Table
</button>
</div>
</div><!-- End panel-content -->
</div>
<!-- Advanced Filters Modal -->
<div id="advancedFiltersModal" class="modal">
<div class="modal-content">
<div class="modal-header">
<h2>Advanced Filters</h2>
<button class="modal-close" onclick="closeAdvancedFilters()">×</button>
</div>
<div class="modal-tabs">
<button class="tab-btn active" onclick="switchTab('conditions')">Crash Conditions</button>
<button class="tab-btn" onclick="switchTab('casualties')">Casualties</button>
<button class="tab-btn" onclick="switchTab('vehicles')">Vehicles & Units</button>
</div>
<div class="modal-body">
<!-- Crash Conditions Tab -->
<div id="conditionsTab" class="tab-content active">
<div class="filter-group">
<label class="filter-label">Weather Condition</label>
<select id="weather" onchange="markFiltersChanged()">
<option value="all" selected>All Weather</option>
</select>
</div>
<div class="filter-group">
<label class="filter-label">Day/Night</label>
<select id="dayNight" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Daylight">Daylight</option>
<option value="Night">Night</option>
</select>
</div>
<div class="filter-group">
<label class="filter-label">Time of Day (Optional)</label>
<div class="time-range-container">
<div class="time-range-field">
<label class="time-range-label">From:</label>
<input type="time" id="timeFrom" onchange="markFiltersChanged()">
</div>
<div class="time-range-field">
<label class="time-range-label">To:</label>
<input type="time" id="timeTo" onchange="markFiltersChanged()">
</div>
</div>
<div class="help-text-small">Leave empty for all times</div>
</div>
<div class="filter-group">
<label class="filter-label">Date Range (Optional)</label>
<div class="time-range-container">
<div class="time-range-field">
<label class="time-range-label">From:</label>
<input type="date" id="dateFrom" onchange="markFiltersChanged()">
</div>
<div class="time-range-field">
<label class="time-range-label">To:</label>
<input type="date" id="dateTo" onchange="markFiltersChanged()">
</div>
</div>
<div class="help-text-small">Leave empty to use year range only</div>
</div>
<div class="filter-group">
<label class="filter-label">DUI Involved</label>
<select id="duiInvolved" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Yes">Yes</option>
<option value="No">No</option>
</select>
</div>
<div class="filter-group">
<label class="filter-label">Road Surface</label>
<select id="roadSurface" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Surfaces</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Moisture Condition</label>
<select id="moistureCond" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Conditions</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Drugs Involved</label>
<select id="drugsInvolved" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Yes">Yes</option>
<option value="No">No</option>
</select>
</div>
<div class="filter-group">
<label class="filter-label">Speed Zone</label>
<select id="speedZoneFilter" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Speed Zones</option>
</select>
<div class="help-text-small">Speed limit at crash location (km/h)</div>
</div>
<div class="filter-group">
<label class="filter-label">Month of Year</label>
<select id="monthFilter" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Months</option>
<option value="1">January</option>
<option value="2">February</option>
<option value="3">March</option>
<option value="4">April</option>
<option value="5">May</option>
<option value="6">June</option>
<option value="7">July</option>
<option value="8">August</option>
<option value="9">September</option>
<option value="10">October</option>
<option value="11">November</option>
<option value="12">December</option>
</select>
</div>
</div>
<!-- Casualties Tab -->
<div id="casualtiesTab" class="tab-content">
<div class="filter-group">
<label class="filter-label">Road User Type</label>
<select id="roadUserType" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Road Users</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Age Group</label>
<select id="ageGroup" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Ages</option>
<option value="0-17">0-17 (Youth)</option>
<option value="18-25">18-25 (Young Adult)</option>
<option value="26-35">26-35</option>
<option value="36-50">36-50</option>
<option value="51-65">51-65</option>
<option value="66+">66+ (Senior)</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Casualty Sex</label>
<select id="casualtySex" multiple size="3" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Male">Male</option>
<option value="Female">Female</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Injury Extent</label>
<select id="injuryExtent" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Injuries</option>
<option value="Fatal">Fatal</option>
<option value="Serious injury">Serious Injury</option>
<option value="Minor injury">Minor Injury</option>
<option value="Not injured">Not Injured</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Seat Belt Usage</label>
<select id="seatBelt" multiple size="3" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Yes">Worn</option>
<option value="No">Not Worn</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Helmet Usage</label>
<select id="helmet" multiple size="3" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Worn">Worn</option>
<option value="Not Worn">Not Worn</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
</div>
<!-- Vehicles & Units Tab -->
<div id="vehiclesTab" class="tab-content">
<div class="filter-group">
<label class="filter-label">Heavy Vehicle Involved</label>
<select id="heavyVehicle" onchange="markFiltersChanged()">
<option value="all" selected>All Vehicles</option>
<option value="Yes">Heavy Vehicles Only</option>
<option value="No">No Heavy Vehicles</option>
</select>
<div class="help-text-small">
Heavy vehicles: Trucks (≥4.5T), Semi-trailers, B-doubles, Road trains, Buses
</div>
</div>
<div class="filter-group">
<label class="filter-label">Involved Entities</label>
<select id="vehicleType" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Entities</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Vehicle Year</label>
<select id="vehicleYear" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Years</option>
<option value="pre-2000">Before 2000</option>
<option value="2000-2010">2000-2010</option>
<option value="2011-2020">2011-2020</option>
<option value="2021+">2021 or Newer</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Number of Occupants</label>
<select id="occupants" multiple size="5" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="1">1 Occupant</option>
<option value="2">2 Occupants</option>
<option value="3">3 Occupants</option>
<option value="4">4 Occupants</option>
<option value="5+">5+ Occupants</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Towing</label>
<select id="towing" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Yes">Towing</option>
<option value="No">Not Towing</option>
</select>
</div>
<div class="filter-group">
<label class="filter-label">Rollover Involved</label>
<select id="rollover" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Yes">Yes</option>
<option value="No">No</option>
</select>
</div>
<div class="filter-group">
<label class="filter-label">Fire Involved</label>
<select id="fire" onchange="markFiltersChanged()">
<option value="all" selected>All</option>
<option value="Yes">Yes</option>
<option value="No">No</option>
</select>
</div>
<div class="filter-group">
<label class="filter-label">License Type</label>
<select id="licenseType" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All License Types</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Vehicle Reg State</label>
<select id="vehRegState" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All States</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Direction of Travel</label>
<select id="directionTravel" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Directions</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
<div class="filter-group">
<label class="filter-label">Unit Movement</label>
<select id="unitMovement" multiple size="4" onchange="markFiltersChanged()">
<option value="all" selected>All Movements</option>
</select>
<div class="multi-select-hint">Hold Ctrl (or Cmd) to select multiple</div>
</div>
</div>
</div>
<div class="modal-footer">
<button class="modal-apply-btn" onclick="applyAdvancedFilters()">Apply Filters</button>
<button class="modal-cancel-btn" onclick="closeAdvancedFilters()">Cancel</button>
</div>
</div>
</div>
<div class="loading" id="loading">
<div class="loading-content">
<div class="loading-spinner"></div>
<div class="loading-message" id="loadingMessage">Loading crash data...</div>
</div>
</div>
<!-- Leaflet JS -->
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
<!-- Leaflet MarkerCluster -->
<script src="https://unpkg.com/leaflet.markercluster@1.5.3/dist/leaflet.markercluster.js"></script>
<!-- Leaflet Heat (for Density Map) -->
<script src="https://unpkg.com/leaflet.heat@0.2.0/dist/leaflet-heat.js"></script>
<!-- Leaflet Draw (for draw-area spatial filter) -->
<script src="https://unpkg.com/leaflet-draw@1.0.4/dist/leaflet.draw.js"></script>
<!-- Leaflet Image (for PDF map export) -->
<script src="https://cdn.jsdelivr.net/npm/leaflet-image@0.4.0/leaflet-image.js"></script>
<!-- HTML2Canvas (fallback for map capture) -->
<script src="https://cdn.jsdelivr.net/npm/html2canvas@1.4.1/dist/html2canvas.min.js"></script>
<!-- noUiSlider JS -->
<script src="https://unpkg.com/nouislider@15.7.1/dist/nouislider.min.js"></script>
<!-- Pako for gzip decompression -->
<script src="https://unpkg.com/pako@2.1.0/dist/pako.min.js"></script>
<!-- Proj4js for coordinate conversion -->
<script src="https://unpkg.com/proj4@2.9.0/dist/proj4.js"></script>
<!-- Turf.js for geospatial operations (point-in-polygon) -->
<script src="https://unpkg.com/@turf/turf@6.5.0/turf.min.js"></script>
<!-- Chart.js for analytics -->
<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1/dist/chart.umd.min.js"></script>
<!-- jsPDF for PDF generation -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf-autotable/3.8.2/jspdf.plugin.autotable.min.js"></script>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/lz-string/1.5.0/lz-string.min.js"></script>
<!-- Service Worker Registration -->
<script src="sw-register.js"></script>
<!-- Main Application (Modular ES6) -->
<script type="module" src="src/js/main.js"></script>
<!-- Application now uses ES6 modules (src/js/main.js) -->
<!-- Analytics Panel -->
<div class="analytics-panel collapsed" id="analyticsPanel">
<div class="analytics-header" onclick="toggleAnalyticsPanel()">
<h3>📊 Analytics</h3>
<button class="analytics-close-btn" onclick="closeAnalyticsPanel(event)" title="Close">✕</button>
</div>
<div class="analytics-content">
<div class="chart-container">
<div class="chart-header">
<h4>Crashes Over Time <span class="chart-info-icon">i<span class="chart-info-tooltip">Total crashes per year or month. In Yearly mode, click a point to filter to that year. Toggle between Yearly and Monthly views using the buttons.</span></span></h4>
<div class="chart-header-right">
<div class="chart-toggle-btns">
<button id="btnYearly" class="chart-toggle-btn active" onclick="setOverTimeMode('yearly')">Yearly</button>
<button id="btnMonthly" class="chart-toggle-btn" onclick="setOverTimeMode('monthly')">Monthly</button>
</div>
</div>
</div>
<div id="yearFilterBanner" class="year-filter-banner" style="display:none">
<span><strong id="yearBannerLabel"></strong> only</span>
<button onclick="clearYearChip()">Remove Filter ×</button>
</div>
<div class="chart-wrapper">
<canvas id="crashesOverTimeChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Crashes by Day of Week <span class="chart-info-icon">i<span class="chart-info-tooltip">Total crashes for each day of the week. Orange bars highlight weekends (Sat & Sun). The dashed line shows the daily average.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="crashesByDayChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Crashes by Hour <span class="chart-info-icon">i<span class="chart-info-tooltip">Total crashes by hour of day (12am–11pm). Bars graduate from blue (fewer) to red (more). The dashed line shows the hourly average.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="crashesByHourChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Severity Distribution <span class="chart-info-icon">i<span class="chart-info-tooltip">Breakdown of crashes by severity. Click a segment to filter the map and graphs to that severity only. Click the same segment again to restore.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="severityDistributionChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
<p class="chart-click-hint">Click a segment to filter by severity</p>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Top Crash Types <span class="chart-info-icon">i<span class="chart-info-tooltip">Top 10 crash types by frequency in the filtered data. Click a bar to solo-filter by that crash type. Click again to restore all types.</span></span></h4>
</div>
<div class="chart-wrapper chart-wrapper--tall">
<canvas id="crashTypeChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
<p class="chart-click-hint">Click a bar to filter by crash type</p>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Top Areas (LGA) <span class="chart-info-icon">i<span class="chart-info-tooltip">Top 10 Local Government Areas by crash count in the filtered data. Click a bar to filter the map to that LGA. Click again to restore all areas.</span></span></h4>
</div>
<div class="chart-wrapper chart-wrapper--tall">
<canvas id="topLGAChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
<p class="chart-click-hint">Click a bar to filter by LGA</p>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Weather Conditions <span class="chart-info-icon">i<span class="chart-info-tooltip">Crash count by weather condition. Click a bar to filter the map to that weather condition. Click again to restore all conditions.</span></span></h4>
</div>
<div class="chart-wrapper chart-wrapper--tall">
<canvas id="weatherChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
<p class="chart-click-hint">Click a bar to filter by weather</p>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Day × Hour Heatmap <span class="chart-info-icon">i<span class="chart-info-tooltip">Crash intensity by day of week and hour of day. Darker red = more crashes. Reveals high-risk time windows such as Friday afternoon rush hour or Saturday night.</span></span></h4>
</div>
<div id="dayHourHeatmap" class="heatmap-wrap"></div>
</div>
<div class="chart-container chart-container--wide">
<div class="chart-header">
<h4>Severity Trend Over Time <span class="chart-info-icon">i<span class="chart-info-tooltip">Fatal crashes, serious injury crashes and minor injury crashes per year. Reveals whether road safety outcomes are improving even when overall crash volumes stay flat.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="severityTrendChart"></canvas>
<div class="chart-loading-overlay"><div class="chart-loading-spinner"></div></div>
<div class="chart-empty-state"><div class="chart-empty-state-content"><div class="chart-empty-state-icon">📊</div><div class="chart-empty-state-message">No data available</div><div class="chart-empty-state-hint">Try adjusting your filters to see results</div></div></div>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Crashes by Speed Zone <span class="chart-info-icon">i<span class="chart-info-tooltip">Total crashes grouped by the posted speed limit at the crash location. Reveals whether crashes are concentrated on high-speed rural roads or in lower-speed urban environments.</span></span></h4>
</div>
<div class="chart-wrapper chart-wrapper--tall">
<canvas id="speedZoneChart"></canvas>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Casualties by Road User Type <span class="chart-info-icon">i<span class="chart-info-tooltip">Distribution of casualties by road user category — drivers, passengers, pedestrians, cyclists and more. Based on casualty records linked to each crash.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="roadUserChart"></canvas>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Casualty Age Distribution <span class="chart-info-icon">i<span class="chart-info-tooltip">Number of casualties in each age group. Highlights which age groups are most at risk in road crashes.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="casualtyAgeChart"></canvas>
</div>
</div>
<div class="chart-container chart-container--wide">
<div class="chart-header">
<h4>Crash Type × Severity Matrix <span class="chart-info-icon">i<span class="chart-info-tooltip">Each cell shows the proportion of crashes of that type resulting in each severity level. Darker shading means a higher proportion. Identifies which crash types are most likely to cause serious harm.</span></span></h4>
</div>
<div id="crashTypeSeverityMatrix" class="heatmap-wrap"></div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Seat Belt Compliance <span class="chart-info-icon">i<span class="chart-info-tooltip">Whether casualties were wearing a seat belt at the time of the crash. Based on casualty records linked to each crash.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="seatBeltChart"></canvas>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Helmet Usage <span class="chart-info-icon">i<span class="chart-info-tooltip">Whether casualties (motorcyclists, cyclists) were wearing a helmet at the time of the crash.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="helmetChart"></canvas>
</div>
</div>
<div class="chart-container">
<div class="chart-header">
<h4>Casualty Sex Breakdown <span class="chart-info-icon">i<span class="chart-info-tooltip">Number of casualties by sex across all crashes in the filtered data.</span></span></h4>
</div>
<div class="chart-wrapper">
<canvas id="casualtySexChart"></canvas>
</div>
</div>
</div>
</div>
<!-- Data Table Panel -->
<div id="dataTablePanel" class="data-table-panel" style="display:none;">
<div class="data-table-header">
<!-- Top Row: Title, Search, Actions -->
<div class="data-table-header-top">
<div class="data-table-title-row">
<span class="data-table-title">Crash Data Table</span>
<span id="dataTableInfo" class="data-table-info"></span>
</div>
<!-- Search Input -->
<input type="text"
id="dtSearch"
class="data-table-search"
placeholder="Search table..."
oninput="searchDataTable(this.value)"
aria-label="Search within table data">
<div class="data-table-actions">
<!-- Column Picker Button -->
<button class="data-table-column-btn"
onclick="toggleColumnPicker()"
title="Show or hide columns"
aria-label="Show or hide columns">
<span class="dt-btn-icon">⚙</span>
<span class="dt-btn-text">Columns</span>
</button>
<!-- Export Page Button -->
<button class="data-table-export-btn"
onclick="exportFilteredData(false)"
title="Export current page to CSV"
aria-label="Export current page to CSV">
<span class="dt-btn-icon">↓</span>
<span class="dt-btn-text">Export</span>
</button>
<!-- Maximize/Minimize Button -->
<button class="data-table-maximize-btn"
id="dtMaximizeBtn"
onclick="toggleDataTableMaximize()"
title="Maximize table"
aria-label="Maximize table">
☐
</button>
<button class="data-table-close-btn" onclick="toggleDataTable()" aria-label="Close data table">✕</button>
</div>
</div>
<!-- Bottom Row: Pagination Controls -->
<div class="data-table-header-bottom">
<div class="data-table-pagination">
<span class="dt-pagination-label">Rows per page:</span>
<select id="dtPageSize" class="data-table-page-size" onchange="changePageSize(this.value)" aria-label="Rows per page">
<option value="10">10</option>
<option value="25" selected>25</option>
<option value="50">50</option>
<option value="100">100</option>
<option value="250">250</option>
<option value="500">500</option>
</select>
</div>
<div class="data-table-navigation">
<!-- Jump to Page -->
<div class="data-table-jump">
<span class="dt-jump-label">Page:</span>
<input type="number"
id="dtJumpPage"
class="dt-jump-input"
min="1"
placeholder="1"
onkeypress="handlePageJump(event)"
aria-label="Jump to page number">
</div>
<button class="data-table-nav-btn" id="dtPrevBtn" onclick="dtChangePage(-1)" aria-label="Previous page">
<span>‹</span>
</button>
<button class="data-table-nav-btn" id="dtNextBtn" onclick="dtChangePage(1)" aria-label="Next page">
<span>›</span>
</button>
</div>
</div>
</div>
<!-- Column Picker Dropdown -->
<div id="columnPicker" class="column-picker" style="display: none;">
<div class="column-picker-header">