A fully offline digital reader for Sayyid Qutb's monumental tafsir, featuring full-text search across 110 surahs, dark/light themes, bookmarks, verse highlighting, and PWA support.

في ظلال القرآن (Fi Dhilal al-Quran — 'In the Shades of the Quran') is a comprehensive digital reader for Sayyid Qutb's monumental Quranic exegesis. Built as an SPA with React 19 and TypeScript, it contains 110 surahs with 305 verse-range sections of tafsir text — all stored locally with no external API dependencies. Features include blazing-fast full-text search with word-match scoring, a gilded gold dark/light theme system, surah/verse bookmarks with optional Supabase cloud sync, reading history tracking, Quranic verse highlighting, Juz-based navigation, and full PWA offline support. The ~18MB tafsir dataset is lazy-loaded on demand.