feat: transform tooltip into celebration when step completed

- Remove separate success notification components entirely
- Transform existing tooltip into celebration state when isStepCompleted
- Change background from blue to green gradient with enhanced shadow
- Replace instructional content with "🎉 Excellent work!" message
- Add celebrationPulse animation and scale(1.05) transform
- Update tooltip arrow color to match celebration theme
- Maintains same positioning rules and collision detection
- Perfect "in your face" feedback without blocking interaction

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

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

@@ -436,20 +436,26 @@ function TutorialPlayerContent({
                 align="center"
                 sideOffset={20}
                 style={{
-                  background: '#1e40af',
+                  background: isStepCompleted
+                    ? 'linear-gradient(135deg, rgba(34, 197, 94, 0.95) 0%, rgba(21, 128, 61, 0.95) 100%)'
+                    : '#1e40af',
                   color: 'white',
                   padding: '12px 16px',
                   borderRadius: '8px',
                   fontSize: '14px',
                   fontWeight: '700',
-                  boxShadow: '0 4px 12px rgba(0,0,0,0.3)',
+                  boxShadow: isStepCompleted
+                    ? '0 8px 25px rgba(34, 197, 94, 0.4), 0 0 0 2px rgba(255, 255, 255, 0.2)'
+                    : '0 4px 12px rgba(0,0,0,0.3)',
                   whiteSpace: 'normal',
                   maxWidth: '200px',
                   minWidth: '150px',
                   wordBreak: 'break-word',
                   zIndex: 1000,
-                  opacity: 0.85,
-                  transition: 'opacity 0.2s ease'
+                  opacity: 0.95,
+                  transition: 'all 0.3s ease',
+                  transform: isStepCompleted ? 'scale(1.05)' : 'scale(1)',
+                  animation: isStepCompleted ? 'celebrationPulse 0.6s ease-out' : 'none'
                 }}
                 onMouseEnter={(e) => {
                   e.currentTarget.style.opacity = '1'
@@ -459,16 +465,31 @@ function TutorialPlayerContent({
                 }}
               >
                 <div style={{ fontSize: '12px', opacity: 0.9 }}>
-                  <PedagogicalDecompositionDisplay
-                    variant="tooltip"
-                    showLabel={true}
-                    decomposition={renderHighlightedDecomposition()}
-                  />
-                  <span style={{ fontSize: '18px' }}>💡</span> {currentStepSummary}
+                  {isStepCompleted ? (
+                    <div style={{
+                      display: 'flex',
+                      alignItems: 'center',
+                      gap: '8px',
+                      fontSize: '14px',
+                      fontWeight: 'bold'
+                    }}>
+                      <span style={{ fontSize: '18px' }}>🎉</span>
+                      <span>Excellent work!</span>
+                    </div>
+                  ) : (
+                    <>
+                      <PedagogicalDecompositionDisplay
+                        variant="tooltip"
+                        showLabel={true}
+                        decomposition={renderHighlightedDecomposition()}
+                      />
+                      <span style={{ fontSize: '18px' }}>💡</span> {currentStepSummary}
+                    </>
+                  )}
                 </div>
                 <Tooltip.Arrow
                   style={{
-                    fill: '#1e40af'
+                    fill: isStepCompleted ? '#15803d' : '#1e40af'
                   }}
                 />
               </Tooltip.Content>
@@ -1286,66 +1307,19 @@ function TutorialPlayerContent({
           </div>
         )}
 
-        {/* Success notification - positioned directly above the abacus */}
-        {isStepCompleted && !isSuccessPopupDismissed && (
-          <div
-            className={css({
-              position: 'absolute',
-              top: '-60px',
-              left: '50%',
-              transform: 'translateX(-50%)',
-              zIndex: 50,
-              pointerEvents: 'none',
-              animation: 'bounceIn 0.4s ease-out, fadeOut 0.3s ease-in 2.2s forwards'
-            })}
-          >
-            <div className={css({
-              background: 'linear-gradient(135deg, rgba(34, 197, 94, 0.95) 0%, rgba(21, 128, 61, 0.95) 100%)',
-              borderRadius: 'xl',
-              px: 6,
-              py: 3,
-              color: 'white',
-              fontSize: 'lg',
-              fontWeight: 'bold',
-              boxShadow: '0 8px 25px rgba(34, 197, 94, 0.4), 0 0 0 2px rgba(255, 255, 255, 0.2)',
-              display: 'flex',
-              alignItems: 'center',
-              gap: 3,
-              textShadow: '0 1px 2px rgba(0, 0, 0, 0.2)',
-              whiteSpace: 'nowrap'
-            })}>
-              <span className={css({ fontSize: 'xl' })}>🎉</span>
-              <span>Excellent!</span>
-            </div>
-          </div>
-        )}
       </div>
 
       {/* Add CSS animations */}
       <style jsx>{`
-        @keyframes bounceIn {
+        @keyframes celebrationPulse {
           0% {
-            transform: translateX(-50%) scale(0.3);
-            opacity: 0;
+            transform: scale(1);
           }
           50% {
-            transform: translateX(-50%) scale(1.05);
-          }
-          70% {
-            transform: translateX(-50%) scale(0.95);
+            transform: scale(1.1);
           }
           100% {
-            transform: translateX(-50%) scale(1);
-            opacity: 1;
-          }
-        }
-
-        @keyframes fadeOut {
-          0% {
-            opacity: 1;
-          }
-          100% {
-            opacity: 0;
+            transform: scale(1.05);
           }
         }
       `}</style>