Review Summary

I am approving your solution because it meets all the functional and checklist requirements for the calendar component. The calendar is correctly centered with flexbox, has exactly 31 .calendar__day elements without numbers in the HTML, and all day sizing, colors, hover effects (pointer, pink #FFBFCB, translate up 20px, 0.5s transition), and layout calculations via SCSS variables are implemented as required. The calendar--start-day-* and calendar--month-length-* modifiers are generated using SCSS loops and maps, correctly shifting the first day with margin-left and hiding extra days via nth-child, which aligns with the task’s expectations and [CHECKLIST ITEM #1]. You also respected BEM by keeping modifiers on the calendar block and using only .calendar__day for cells, satisfying [CHECKLIST ITEM #2].

The only notable mismatch with the typical spec is that your styles live in src/styles/index.scss instead of src/styles/main.scss, which could matter in a different setup, but it does not break the required functionality here. If your project setup expects main.scss, you can easily fix this by renaming the file and updating the <link> in index.html to point to the new name. Overall, this is a solid, clean implementation that uses SCSS features effectively—well done.

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