chore(release): 4.20.2 [skip ci]

## [4.20.2](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.20.1...v4.20.2) (2025-10-19)

### Bug Fixes

* **homepage:** improve text contrast in Your Journey section ([24d1200](24d120004d))
* **tutorial:** resolve TypeScript errors in TutorialPlayer ([88f57ce](88f57ce6df))

CHANGELOG.md

@@ -1,3 +1,65 @@
+## [4.20.2](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.20.1...v4.20.2) (2025-10-19)
+
+
+### Bug Fixes
+
+* **homepage:** improve text contrast in Your Journey section ([24d1200](https://github.com/antialias/soroban-abacus-flashcards/commit/24d120004dccecc1ce2f08c1b73eec902868fb23))
+* **tutorial:** resolve TypeScript errors in TutorialPlayer ([88f57ce](https://github.com/antialias/soroban-abacus-flashcards/commit/88f57ce6df125142d6ea7feec60c475926bd4929))
+
+## [4.20.1](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.20.0...v4.20.1) (2025-10-19)
+
+
+### Bug Fixes
+
+* **homepage:** correct positioning of progression arrows in Your Journey section ([3fff9ef](https://github.com/antialias/soroban-abacus-flashcards/commit/3fff9ef140bf1f462042f8319ed6c5e2a376e4ba))
+
+
+### Code Refactoring
+
+* **homepage:** move What You'll Learn above tutorial ([ca1c6d8](https://github.com/antialias/soroban-abacus-flashcards/commit/ca1c6d86029c891e019a96ba161e49b08b5be1bf))
+
+## [4.20.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.19.0...v4.20.0) (2025-10-19)
+
+
+### Features
+
+* **tutorial:** add hideTooltip prop and improve dark mode coaching bar ([1ee25b3](https://github.com/antialias/soroban-abacus-flashcards/commit/1ee25b3dd2f0ee9dd7ed571ba818b7ca5a247f85))
+
+## [4.19.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.18.1...v4.19.0) (2025-10-19)
+
+
+### Features
+
+* **tutorial:** add fill color support for dark mode column posts and reckoning bar ([2eb3ff3](https://github.com/antialias/soroban-abacus-flashcards/commit/2eb3ff340613301df20bf14f5b461371a27d7f05))
+
+## [4.18.1](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.18.0...v4.18.1) (2025-10-19)
+
+
+### Bug Fixes
+
+* **tutorial:** use correct customStyles API for dark mode frame styling ([fdc882c](https://github.com/antialias/soroban-abacus-flashcards/commit/fdc882cb046e3d8835fbca59841e9af5329bcc52))
+
+## [4.18.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.17.2...v4.18.0) (2025-10-19)
+
+
+### Features
+
+* **tutorial:** add dark mode styling for coaching bar and abacus frame ([7e2f580](https://github.com/antialias/soroban-abacus-flashcards/commit/7e2f580877af9d21409f427778fa3569c950fcf5))
+
+## [4.17.2](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.17.1...v4.17.2) (2025-10-19)
+
+
+### Bug Fixes
+
+* **tutorial:** correct column index calculation for variable column counts ([bf1ced4](https://github.com/antialias/soroban-abacus-flashcards/commit/bf1ced43f801938b05f01548eea5fe771de1b58f))
+
+## [4.17.1](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.17.0...v4.17.1) (2025-10-19)
+
+
+### Bug Fixes
+
+* **tutorial:** filter bead highlights when using fewer columns ([4d906ec](https://github.com/antialias/soroban-abacus-flashcards/commit/4d906ec20e90a9b0b3838f9b8428e0c68992f381))
+
 ## [4.17.0](https://github.com/antialias/soroban-abacus-flashcards/compare/v4.16.0...v4.17.0) (2025-10-19)
 
 

apps/web/src/app/page.tsx

@@ -219,21 +219,12 @@ export default function HomePage() {
                 mx: 'auto',
               })}
             >
-              <TutorialPlayer
-                tutorial={friendsOf5Tutorial}
-                isDebugMode={false}
-                showDebugPanel={false}
-                hideNavigation={true}
-                abacusColumns={2}
-                theme="dark"
-              />
-
-              {/* What you'll learn - below tutorial */}
+              {/* What you'll learn - above tutorial */}
               <div
                 className={css({
-                  mt: '8',
-                  pt: '6',
-                  borderTop: '1px solid',
+                  mb: '8',
+                  pb: '6',
+                  borderBottom: '1px solid',
                   borderColor: 'gray.700',
                 })}
               >
@@ -262,6 +253,16 @@ export default function HomePage() {
                   ))}
                 </div>
               </div>
+
+              <TutorialPlayer
+                tutorial={friendsOf5Tutorial}
+                isDebugMode={false}
+                showDebugPanel={false}
+                hideNavigation={true}
+                hideTooltip={true}
+                abacusColumns={2}
+                theme="dark"
+              />
             </div>
           </section>
 
@@ -378,7 +379,7 @@ export default function HomePage() {
               >
                 Your Journey
               </h2>
-              <p className={css({ color: 'gray.400', fontSize: 'md' })}>
+              <p className={css({ color: 'gray.200', fontSize: 'md' })}>
                 Progress from beginner to master
               </p>
             </div>
@@ -407,7 +408,15 @@ export default function HomePage() {
                   { level: '1 Kyu', label: 'Advanced', color: 'purple.400' },
                   { level: 'Dan', label: 'Master', color: 'yellow.400' },
                 ].map((stage, i) => (
-                  <div key={i} className={stack({ gap: '2', textAlign: 'center', flex: '1' })}>
+                  <div
+                    key={i}
+                    className={stack({
+                      gap: '2',
+                      textAlign: 'center',
+                      flex: '1',
+                      position: 'relative',
+                    })}
+                  >
                     <div
                       className={css({
                         fontSize: 'xl',
@@ -417,7 +426,7 @@ export default function HomePage() {
                     >
                       {stage.level}
                     </div>
-                    <div className={css({ fontSize: 'sm', color: 'gray.400' })}>{stage.label}</div>
+                    <div className={css({ fontSize: 'sm', color: 'gray.200' })}>{stage.label}</div>
                     {i < 3 && (
                       <div
                         className={css({
@@ -425,7 +434,7 @@ export default function HomePage() {
                           position: 'absolute',
                           right: '-50%',
                           fontSize: 'xl',
-                          color: 'gray.600',
+                          color: 'gray.400',
                         })}
                       >
                         →
@@ -439,7 +448,7 @@ export default function HomePage() {
                   mt: '6',
                   textAlign: 'center',
                   fontSize: 'sm',
-                  color: 'gray.500',
+                  color: 'gray.300',
                   fontStyle: 'italic',
                 })}
               >

apps/web/src/components/tutorial/TutorialPlayer.tsx

@@ -216,6 +216,7 @@ interface TutorialPlayerProps {
   isDebugMode?: boolean
   showDebugPanel?: boolean
   hideNavigation?: boolean
+  hideTooltip?: boolean
   abacusColumns?: number
   theme?: 'light' | 'dark'
   onStepChange?: (stepIndex: number, step: TutorialStep) => void
@@ -231,6 +232,7 @@ function TutorialPlayerContent({
   isDebugMode = false,
   showDebugPanel = false,
   hideNavigation = false,
+  hideTooltip = false,
   abacusColumns = 5,
   theme = 'light',
   onStepChange,
@@ -385,16 +387,20 @@ function TutorialPlayerContent({
       }
 
       // Convert bead diff results to StepBeadHighlight format expected by AbacusReact
-      const stepBeadHighlights: StepBeadHighlight[] = beadDiff.changes.map((change, _index) => ({
-        placeValue: change.placeValue,
-        beadType: change.beadType,
-        position: change.position,
-        direction: change.direction,
-        stepIndex: currentMultiStep, // Use current multi-step index to match AbacusReact filtering
-        order: change.order,
-      }))
+      // Filter to only include beads from columns that exist
+      const minValidPlaceValue = Math.max(0, 5 - abacusColumns)
+      const stepBeadHighlights: StepBeadHighlight[] = beadDiff.changes
+        .filter((change) => change.placeValue < abacusColumns)
+        .map((change, _index) => ({
+          placeValue: change.placeValue,
+          beadType: change.beadType,
+          position: change.position,
+          direction: change.direction,
+          stepIndex: currentMultiStep, // Use current multi-step index to match AbacusReact filtering
+          order: change.order,
+        }))
 
-      return stepBeadHighlights
+      return stepBeadHighlights.length > 0 ? stepBeadHighlights : undefined
     } catch (error) {
       console.error('Error generating step beads with bead diff:', error)
       return undefined
@@ -405,6 +411,7 @@ function TutorialPlayerContent({
     expectedSteps,
     currentMultiStep,
     currentStep.stepBeadHighlights,
+    abacusColumns,
   ])
 
   // Get the current step's bead diff summary for real-time user feedback
@@ -428,6 +435,14 @@ function TutorialPlayerContent({
   // Get current step summary for real-time user feedback
   const currentStepSummary = getCurrentStepSummary()
 
+  // Filter highlightBeads to only include valid columns
+  const filteredHighlightBeads = useMemo(() => {
+    if (!currentStep.highlightBeads) return undefined
+    return currentStep.highlightBeads.filter((highlight) => {
+      return highlight.placeValue < abacusColumns
+    })
+  }, [currentStep.highlightBeads, abacusColumns])
+
   // Helper function to highlight the current mathematical term in the full decomposition
   const renderHighlightedDecomposition = useCallback(() => {
     if (!fullDecomposition || expectedSteps.length === 0) return null
@@ -525,16 +540,27 @@ function TutorialPlayerContent({
       return null
     }
 
+    // Validate that the bead is from a column that exists
+    if (topmostBead.placeValue >= abacusColumns) {
+      // Bead is from an invalid column, skip tooltip
+      return null
+    }
+
     // Smart positioning logic: avoid covering active beads
-    const targetColumnIndex = 4 - topmostBead.placeValue // Convert placeValue to columnIndex (5 columns: 0-4)
+    // Convert placeValue to columnIndex based on actual number of columns
+    const targetColumnIndex = abacusColumns - 1 - topmostBead.placeValue
 
     // Check if there are any active beads (against reckoning bar OR with arrows) in columns to the left
     const hasActiveBeadsToLeft = (() => {
       // Get current abacus state - we need to check which beads are against the reckoning bar
-      const abacusDigits = currentValue.toString().padStart(5, '0').split('').map(Number)
+      const abacusDigits = currentValue
+        .toString()
+        .padStart(abacusColumns, '0')
+        .split('')
+        .map(Number)
 
       for (let col = 0; col < targetColumnIndex; col++) {
-        const _placeValue = 4 - col // Convert columnIndex back to placeValue
+        const placeValue = abacusColumns - 1 - col // Convert columnIndex back to placeValue
         const digitValue = abacusDigits[col]
 
         // Check if any beads are active (against reckoning bar) in this column
@@ -550,7 +576,7 @@ function TutorialPlayerContent({
         // Also check if this column has beads with direction arrows (from current step)
         const hasArrowsInColumn =
           currentStepBeads?.some((bead) => {
-            const beadColumnIndex = 4 - bead.placeValue
+            const beadColumnIndex = abacusColumns - 1 - bead.placeValue
             return beadColumnIndex === col && bead.direction && bead.direction !== 'none'
           }) ?? false
         if (hasArrowsInColumn) {
@@ -676,6 +702,7 @@ function TutorialPlayerContent({
     currentValue,
     currentStep,
     isMeaningfulDecomposition,
+    abacusColumns,
   ])
 
   // Timer for smart help detection
@@ -870,8 +897,8 @@ function TutorialPlayerContent({
       // Check if this is the correct action
       if (currentStep.highlightBeads && Array.isArray(currentStep.highlightBeads)) {
         const isCorrectBead = currentStep.highlightBeads.some((highlight) => {
-          // Get place value from highlight (convert columnIndex to placeValue if needed)
-          const highlightPlaceValue = highlight.placeValue ?? 4 - highlight.columnIndex
+          // Get place value from highlight
+          const highlightPlaceValue = highlight.placeValue
           // Get place value from bead click event
           const beadPlaceValue = beadInfo.bead ? beadInfo.bead.placeValue : 4 - beadInfo.columnIndex
 
@@ -883,9 +910,10 @@ function TutorialPlayerContent({
         })
 
         if (!isCorrectBead) {
+          const errorMessage = "That's not the highlighted bead. Try clicking the highlighted bead."
           dispatch({
             type: 'SET_ERROR',
-            error: currentStep.errorMessages.wrongBead,
+            error: errorMessage,
           })
 
           dispatch({
@@ -893,7 +921,7 @@ function TutorialPlayerContent({
             event: {
               type: 'ERROR_OCCURRED',
               stepId: currentStep.id,
-              error: currentStep.errorMessages.wrongBead,
+              error: errorMessage,
               timestamp: new Date(),
             },
           })
@@ -1009,14 +1037,21 @@ function TutorialPlayerContent({
 
   // Memoize custom styles calculation to avoid expensive recalculation on every render
   const customStyles = useMemo(() => {
+    // Calculate valid column range based on abacusColumns
+    const minValidColumn = 5 - abacusColumns
+
     // Start with static highlights from step configuration
     const staticHighlights: Record<number, any> = {}
 
     if (currentStep.highlightBeads && Array.isArray(currentStep.highlightBeads)) {
       currentStep.highlightBeads.forEach((highlight) => {
         // Convert placeValue to columnIndex for AbacusReact compatibility
-        const columnIndex =
-          highlight.placeValue !== undefined ? 4 - highlight.placeValue : highlight.columnIndex
+        const columnIndex = abacusColumns - 1 - highlight.placeValue
+
+        // Skip highlights for columns that don't exist
+        if (columnIndex < minValidColumn) {
+          return
+        }
 
         // Initialize column if it doesn't exist
         if (!staticHighlights[columnIndex]) {
@@ -1047,6 +1082,12 @@ function TutorialPlayerContent({
     const mergedHighlights = { ...staticHighlights }
     Object.keys(dynamicColumnHighlights).forEach((columnIndexStr) => {
       const columnIndex = parseInt(columnIndexStr, 10)
+
+      // Skip highlights for columns that don't exist
+      if (columnIndex < minValidColumn) {
+        return
+      }
+
       if (!mergedHighlights[columnIndex]) {
         mergedHighlights[columnIndex] = {}
       }
@@ -1054,8 +1095,32 @@ function TutorialPlayerContent({
       Object.assign(mergedHighlights[columnIndex], dynamicColumnHighlights[columnIndex])
     })
 
-    return Object.keys(mergedHighlights).length > 0 ? { columns: mergedHighlights } : undefined
-  }, [currentStep.highlightBeads, dynamicColumnHighlights])
+    // Build the custom styles object
+    const styles: any = {}
+
+    // Add column highlights if any
+    if (Object.keys(mergedHighlights).length > 0) {
+      styles.columns = mergedHighlights
+    }
+
+    // Add frame styling for dark mode
+    if (theme === 'dark') {
+      // Column dividers (global for all columns)
+      styles.columnPosts = {
+        fill: 'rgba(255, 255, 255, 0.3)', // High contrast fill for visibility
+        stroke: 'rgba(255, 255, 255, 0.2)',
+        strokeWidth: 2,
+      }
+      // Reckoning bar (horizontal middle bar)
+      styles.reckoningBar = {
+        fill: 'rgba(255, 255, 255, 0.4)', // High contrast fill for visibility
+        stroke: 'rgba(255, 255, 255, 0.25)',
+        strokeWidth: 3,
+      }
+    }
+
+    return Object.keys(styles).length > 0 ? styles : undefined
+  }, [currentStep.highlightBeads, dynamicColumnHighlights, abacusColumns, theme])
 
   if (!currentStep) {
     return <div>No steps available</div>
@@ -1075,9 +1140,9 @@ function TutorialPlayerContent({
         <div
           className={css({
             borderBottom: '1px solid',
-            borderColor: 'gray.200',
+            borderColor: theme === 'dark' ? 'rgba(255, 255, 255, 0.1)' : 'gray.200',
             p: 4,
-            bg: 'white',
+            bg: theme === 'dark' ? 'rgba(30, 30, 40, 0.6)' : 'white',
           })}
         >
           <div
@@ -1346,7 +1411,8 @@ function TutorialPlayerContent({
               </div>
 
               {/* Multi-step instructions panel */}
-              {currentStep.multiStepInstructions &&
+              {!hideTooltip &&
+                currentStep.multiStepInstructions &&
                 currentStep.multiStepInstructions.length > 0 && (
                   <div
                     className={css({
@@ -1482,7 +1548,10 @@ function TutorialPlayerContent({
                               className={css({
                                 mb: 1,
                                 fontWeight: 'bold',
-                                color: 'yellow.900',
+                                color: theme === 'dark' ? 'yellow.200' : 'yellow.900',
+                                textShadow:
+                                  theme === 'dark' ? '0 0 12px rgba(251, 191, 36, 0.4)' : 'none',
+                                fontSize: theme === 'dark' ? 'lg' : 'base',
                               })}
                             >
                               {currentInstruction}
@@ -1535,7 +1604,7 @@ function TutorialPlayerContent({
                   hideInactiveBeads={abacusConfig.hideInactiveBeads}
                   soundEnabled={abacusConfig.soundEnabled}
                   soundVolume={abacusConfig.soundVolume}
-                  highlightBeads={currentStep.highlightBeads}
+                  highlightBeads={filteredHighlightBeads}
                   stepBeadHighlights={currentStepBeads}
                   currentStep={currentMultiStep}
                   showDirectionIndicators={true}
@@ -1600,7 +1669,7 @@ function TutorialPlayerContent({
               </div>
 
               {/* Tooltip */}
-              {currentStep.tooltip && (
+              {!hideTooltip && currentStep.tooltip && (
                 <div
                   className={css({
                     maxW: '500px',

package.json

@@ -1,6 +1,6 @@
 {
   "name": "soroban-monorepo",
-  "version": "4.17.0",
+  "version": "4.20.2",
   "private": true,
   "description": "Beautiful Soroban Flashcard Generator - Monorepo",
   "workspaces": [

packages/abacus-react/src/AbacusReact.tsx

@@ -27,6 +27,7 @@ export interface BeadStyle {
 }
 
 export interface ColumnPostStyle {
+  fill?: string;
   stroke?: string;
   strokeWidth?: number;
   opacity?: number;
@@ -34,6 +35,7 @@ export interface ColumnPostStyle {
 }
 
 export interface ReckoningBarStyle {
+  fill?: string;
   stroke?: string;
   strokeWidth?: number;
   opacity?: number;
@@ -1979,7 +1981,10 @@ export const AbacusReact: React.FC<AbacusConfig> = ({
           const columnStyles = customStyles?.columns?.[colIndex];
           const globalColumnPosts = customStyles?.columnPosts;
           const rodStyle = {
-            fill: "rgb(0, 0, 0, 0.1)", // Default Typst color
+            fill:
+              columnStyles?.columnPost?.fill ||
+              globalColumnPosts?.fill ||
+              "rgb(0, 0, 0, 0.1)", // Default Typst color
             stroke:
               columnStyles?.columnPost?.stroke ||
               globalColumnPosts?.stroke ||
@@ -2017,8 +2022,10 @@ export const AbacusReact: React.FC<AbacusConfig> = ({
             (effectiveColumns - 1) * dimensions.rodSpacing + dimensions.beadSize
           }
           height={dimensions.barThickness}
-          fill="black" // Typst uses black
-          stroke="none"
+          fill={customStyles?.reckoningBar?.fill || "black"} // Typst default is black
+          stroke={customStyles?.reckoningBar?.stroke || "none"}
+          strokeWidth={customStyles?.reckoningBar?.strokeWidth ?? 0}
+          opacity={customStyles?.reckoningBar?.opacity ?? 1}
         />
 
         {/* Beads */}