diff --git a/.env.sample b/.env.sample
index b2e280a..1eccfbf 100644
--- a/.env.sample
+++ b/.env.sample
@@ -445,3 +445,8 @@
 # When true, all sections start expanded. When false, all sections start collapsed.
 # Default: true
 # BK_STATISTICS_DEFAULT_EXPANDED=false
+
+# Optional: Enable dark mode by default
+# When true, the application starts in dark mode. 
+# Default: false
+# BK_DARK_MODE=true
diff --git a/bricktracker/config.py b/bricktracker/config.py
index 7026295..94e681c 100644
--- a/bricktracker/config.py
+++ b/bricktracker/config.py
@@ -96,4 +96,5 @@ CONFIG: Final[list[dict[str, Any]]] = [
     {'n': 'WISHES_DEFAULT_ORDER', 'd': '"bricktracker_wishes"."rowid" DESC'},
     {'n': 'STATISTICS_SHOW_CHARTS', 'd': True, 'c': bool},
     {'n': 'STATISTICS_DEFAULT_EXPANDED', 'd': True, 'c': bool},
+    {'n': 'DARK_MODE', 'c': bool},
 ]
diff --git a/bricktracker/config_manager.py b/bricktracker/config_manager.py
index 475a3c7..d5d1298 100644
--- a/bricktracker/config_manager.py
+++ b/bricktracker/config_manager.py
@@ -53,6 +53,7 @@ LIVE_CHANGEABLE_VARS: Final[List[str]] = [
     'BK_REBRICKABLE_PAGE_SIZE',
     'BK_STATISTICS_SHOW_CHARTS',
     'BK_STATISTICS_DEFAULT_EXPANDED',
+    'BK_DARK_MODE',
     # Default ordering and formatting
     'BK_INSTRUCTIONS_ALLOWED_EXTENSIONS',
     'BK_MINIFIGURES_DEFAULT_ORDER',
@@ -322,6 +323,7 @@ class ConfigManager:
             'BK_HIDE_SPARE_PARTS': 'Hide spare parts from parts lists (spare parts must still be in database)',
             'BK_USE_REMOTE_IMAGES': 'Use remote images from Rebrickable CDN instead of local',
             'BK_STATISTICS_SHOW_CHARTS': 'Show collection growth charts on statistics page',
-            'BK_STATISTICS_DEFAULT_EXPANDED': 'Expand all statistics sections by default'
+            'BK_STATISTICS_DEFAULT_EXPANDED': 'Expand all statistics sections by default',
+            'BK_DARK_MODE': 'Enable dark mode theme'
         }
         return help_text.get(var_name, 'No help available for this variable')
\ No newline at end of file
diff --git a/static/scripts/statistics.js b/static/scripts/statistics.js
index f51c4bf..df2ca3a 100644
--- a/static/scripts/statistics.js
+++ b/static/scripts/statistics.js
@@ -11,6 +11,11 @@ document.addEventListener('DOMContentLoaded', function() {
     // Debug: Log chart data to console
     console.log('Chart Data:', window.chartData);
 
+    // Get current theme colors
+    const isDarkMode = document.documentElement.getAttribute('data-bs-theme') === 'dark';
+    const textColor = isDarkMode ? '#f8f9fa' : '#212529';
+    const gridColor = isDarkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
+
     // Common chart configuration
     const commonConfig = {
         type: 'line',
@@ -25,20 +30,30 @@ document.addEventListener('DOMContentLoaded', function() {
                 x: {
                     title: {
                         display: true,
-                        text: 'Release Year'
+                        text: 'Release Year',
+                        color: textColor
+                    },
+                    ticks: {
+                        color: textColor
                     },
                     grid: {
-                        display: false
+                        display: false,
+                        color: gridColor
                     }
                 },
                 y: {
                     beginAtZero: true,
                     title: {
                         display: true,
-                        text: 'Count'
+                        text: 'Count',
+                        color: textColor
                     },
                     ticks: {
-                        precision: 0
+                        precision: 0,
+                        color: textColor
+                    },
+                    grid: {
+                        color: gridColor
                     }
                 }
             },
@@ -110,7 +125,8 @@ document.addEventListener('DOMContentLoaded', function() {
                         ...commonConfig.options.scales.y,
                         title: {
                             display: true,
-                            text: 'Parts Count'
+                            text: 'Parts Count',
+                            color: textColor
                         }
                     }
                 }
@@ -143,7 +159,8 @@ document.addEventListener('DOMContentLoaded', function() {
                         ...commonConfig.options.scales.y,
                         title: {
                             display: true,
-                            text: 'Minifigures Count'
+                            text: 'Minifigures Count',
+                            color: textColor
                         }
                     }
                 }
diff --git a/static/styles.css b/static/styles.css
index 90a9b7e..857c3c6 100644
--- a/static/styles.css
+++ b/static/styles.css
@@ -87,6 +87,11 @@
     border-color: #6c757d;
 }
 
+[data-bs-theme="dark"] .table th .dropdown-toggle:hover {
+    background-color: #2b3035;
+    border-color: #6c757d;
+}
+
 /* Style dropdown items */
 .dropdown-menu .dropdown-header {
     font-size: 0.75rem;
@@ -106,6 +111,11 @@
     color: #212529;
 }
 
+[data-bs-theme="dark"] .dropdown-menu .dropdown-item:hover {
+    background-color: #2b3035;
+    color: #fff;
+}
+
 .dropdown-menu .dropdown-item i {
     width: 1.25rem;
     text-align: center;
@@ -117,6 +127,11 @@
     --th-bg:#fff !important;
 }
 
+[data-bs-theme="dark"] .sortable {
+    --th-color: #fff !important;
+    --th-bg: #212529 !important;
+}
+
 .sortable thead th {
     font-weight: bold !important;
 }
@@ -180,3 +195,80 @@
     pointer-events: none;
 }/* Duplicate filter support */
 .duplicate-filter-hidden { display: none !important; }
+
+/* Dark mode link and text fixes */
+[data-bs-theme="dark"] .text-reset {
+    color: var(--bs-body-color) !important;
+}
+
+[data-bs-theme="dark"] a.text-reset:hover {
+    color: var(--bs-link-hover-color) !important;
+}
+
+[data-bs-theme="dark"] .text-dark {
+    color: var(--bs-body-color) !important;
+}
+
+/* Dark mode border fixes */
+[data-bs-theme="dark"] .border-black {
+    border-color: var(--bs-border-color) !important;
+}
+
+/* Dark mode badge fixes */
+[data-bs-theme="dark"] .text-bg-light {
+    background-color: #343a40 !important;
+    color: #f8f9fa !important;
+}
+
+[data-bs-theme="dark"] .bg-white {
+    background-color: #212529 !important;
+}
+
+[data-bs-theme="dark"] .text-black {
+    color: #f8f9fa !important;
+}
+
+/* Dark mode button fixes */
+[data-bs-theme="dark"] .btn-outline-dark {
+    border-color: #f8f9fa;
+    color: #f8f9fa;
+}
+
+[data-bs-theme="dark"] .btn-outline-dark:hover {
+    background-color: #f8f9fa;
+    border-color: #f8f9fa;
+    color: #212529;
+}
+
+[data-bs-theme="dark"] .btn-light {
+    background-color: #343a40;
+    border-color: #495057;
+    color: #f8f9fa;
+}
+
+[data-bs-theme="dark"] .btn-light:hover {
+    background-color: #495057;
+    border-color: #6c757d;
+    color: #fff;
+}
+
+/* Dark mode table fixes */
+[data-bs-theme="dark"] .table-light {
+    --bs-table-bg: #343a40;
+    --bs-table-color: #f8f9fa;
+}
+
+/* Dark mode for card header links */
+[data-bs-theme="dark"] .text-decoration-none.text-dark {
+    color: var(--bs-body-color) !important;
+}
+
+/* Dark mode table text fix - ensure all table text is visible */
+[data-bs-theme="dark"] .table {
+    --bs-table-color: var(--bs-body-color);
+}
+
+[data-bs-theme="dark"] .table tbody td,
+[data-bs-theme="dark"] .table tbody th {
+    color: var(--bs-body-color);
+}
diff --git a/templates/admin/configuration.html b/templates/admin/configuration.html
index 99c65b0..f6f6fcd 100644
--- a/templates/admin/configuration.html
+++ b/templates/admin/configuration.html
@@ -508,6 +508,14 @@
                   <div class="text-muted small">Expand all statistics sections by default</div>
                 </label>
               </div>
+
+              <div class="form-check form-switch">
+                <input class="form-check-input config-toggle" type="checkbox" id="BK_DARK_MODE" data-var="BK_DARK_MODE" {{ is_locked('BK_DARK_MODE') }}>
+                <label class="form-check-label" for="BK_DARK_MODE">
+                  BK_DARK_MODE {{ config_badges('BK_DARK_MODE') }}
+                  <div class="text-muted small">Enable dark mode theme</div>
+                </label>
+              </div>
             </div>
           </div>
 
diff --git a/templates/base.html b/templates/base.html
index b95433d..968f6ca 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -1,5 +1,5 @@
 <!doctype html>
-<html lang="en">
+<html lang="en" data-bs-theme="{{ 'dark' if config.get('DARK_MODE') in [True, 'True', 'true'] else 'light' }}">
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">