{
  "version": 1,
  "classes": [
    {
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      "label": "পঞ্চম",
      "label_en": "Class 5",
      "icon": "school",
      "color": "#0ea5e9",
      "gradient": "from-sky-500 to-cyan-400",
      "description": "প্রাথমিক সমাপনী",
      "subjects": [
        {
          "id": "bgs",
          "label": "বাংলাদেশ ও বিশ্বপরিচয়",
          "icon": "public",
          "color": "#16a34a",
          "description": "BGS — ইতিহাস, ভূগোল, নাগরিকতা",
          "types": [
            {
              "id": "mcq",
              "label": "MCQ",
              "label_en": "MCQ",
              "chapters": [
                {
                  "id": "bdmcq",
                  "file": "bdmcq.json",
                  "label": "MCQ — ৫০ প্রশ্ন",
                  "sub": "পূর্ণ সিলেবাস",
                  "questions": 50,
                  "time": "60 min",
                  "badge": "Core",
                  "accent": "#16a34a"
                }
              ]
            },
            {
              "id": "board",
              "label": "বোর্ড প্রশ্ন",
              "label_en": "Mixed Board",
              "chapters": [
                {
                  "id": "bd",
                  "file": "bd.json",
                  "label": "বোর্ড মডেল — ৫০ নম্বর",
                  "sub": "MCQ + শূন্যস্থান + সংক্ষিপ্ত + রচনামূলক",
                  "questions": 50,
                  "time": "60 min",
                  "badge": "Board",
                  "accent": "#15803d"
                }
              ]
            }
          ]
        },
        {
          "id": "science",
          "label": "প্রাথমিক বিজ্ঞান",
          "icon": "science",
          "color": "#0891b2",
          "description": "General Science • ৫০ নম্বর",
          "types": [
            {
              "id": "mcq",
              "label": "MCQ",
              "chapters": [
                {
                  "id": "sciencemcq",
                  "file": "sciencemcq.json",
                  "label": "MCQ — ৫০ প্রশ্ন",
                  "sub": "পূর্ণ সিলেবাস",
                  "questions": 50,
                  "time": "60 min",
                  "badge": "Core",
                  "accent": "#0891b2"
                },
                {
                  "id": "biggan",
                  "file": "biggan.json",
                  "label": "বিজ্ঞান — মডেল",
                  "sub": "বোর্ড স্টাইল",
                  "questions": 50,
                  "time": "60 min",
                  "badge": "Model",
                  "accent": "#0e7490"
                }
              ]
            }
          ]
        },
        {
          "id": "english",
          "label": "English",
          "icon": "menu_book",
          "color": "#7c3aed",
          "description": "Seen • Unseen • Grammar • Writing",
          "types": [
            {
              "id": "model",
              "label": "Model Test",
              "chapters": [
                {
                  "id": "mq",
                  "file": "mq.json",
                  "label": "Full Model — 100 Marks",
                  "sub": "Seen + Unseen + Grammar",
                  "questions": 13,
                  "time": "2.5 hrs",
                  "badge": "Full",
                  "accent": "#7c3aed"
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              ]
            }
          ]
        }
      ]
    },
    {
      "id": "6",
      "label": "ষষ্ঠ",
      "label_en": "Class 6",
      "icon": "calculate",
      "color": "#1e3a8a",
      "gradient": "from-indigo-600 to-blue-500",
      "description": "গণিত ও বিজ্ঞান • MCQ + CQ",
      "subjects": [
        {
          "id": "math",
          "label": "গণিত",
          "icon": "calculate",
          "color": "#1e3a8a",
          "description": "বীজগণিত, জ্যামিতি, ঐকিক নিয়ম",
          "types": [
            {
              "id": "mcq",
              "label": "MCQ",
              "label_en": "MCQ",
              "chapters": [
                {
                  "id": "mathmcq",
                  "file": "mathmcq.json",
                  "label": "ঐকিক নিয়ম — ২.৩",
                  "sub": "অনুপাত, শতকরা, ঐকিক",
                  "questions": 50,
                  "time": "60 min",
                  "badge": "Core",
                  "accent": "#dc2626"
                },
                {
                  "id": "mathmcq15",
                  "file": "mathmcq15.json",
                  "label": "ভগ্নাংশ — ১.৫",
                  "sub": "৩০টি প্রশ্ন",
                  "questions": 30,
                  "time": "45 min",
                  "badge": "High-yield",
                  "accent": "#ea580c"
                },
                {
                  "id": "mathmcq16",
                  "file": "mathmcq16.json",
                  "label": "দশমিক ভগ্নাংশ — ১.৬",
                  "sub": "৩০টি প্রশ্ন",
                  "questions": 30,
                  "time": "45 min",
                  "badge": "Standard",
                  "accent": "#0891b2"
                },
                {
                  "id": "mathmcq43",
                  "file": "mathmcq43.json",
                  "label": "বীজগণিতীয় রাশি — ৪.৩",
                  "sub": "৩০টি প্রশ্ন",
                  "questions": 30,
                  "time": "45 min",
                  "badge": "Scoring",
                  "accent": "#a16207"
                },
                {
                  "id": "mathmcq5",
                  "file": "mathmcq5.json",
                  "label": "সমীকরণ — ৫",
                  "sub": "সরল সমীকরণ",
                  "questions": 30,
                  "time": "45 min",
                  "badge": "Easy win",
                  "accent": "#16a34a"
                },
                {
                  "id": "mathmcq6",
                  "file": "mathmcq6.json",
                  "label": "জ্যামিতিক ধারণা — ৬",
                  "sub": "স্থান, বিন্দু, তল",
                  "questions": 30,
                  "time": "45 min",
                  "badge": "Visual",
                  "accent": "#15803d"
                },
                {
                  "id": "mathmcq7",
                  "file": "mathmcq7.json",
                  "label": "ত্রিভুজ ও চতুর্ভুজ — ৭",
                  "sub": "জ্যামিতি",
                  "questions": 30,
                  "time": "45 min",
                  "badge": "Geometry",
                  "accent": "#7e22ce"
                },
                {
                  "id": "mathmcq8",
                  "file": "mathmcq8.json",
                  "label": "তথ্য ও উপাত্ত — ৮",
                  "sub": "গড়, মধ্যক, প্রচুরক",
                  "questions": 30,
                  "time": "45 min",
                  "badge": "Analytics",
                  "accent": "#0d9488"
                }
              ]
            },
            {
              "id": "cq",
              "label": "CQ — সৃজনশীল",
              "label_en": "Creative (CQ)",
              "chapters": [
                {
                  "id": "mathcreative",
                  "file": "mathcreative.json",
                  "label": "সৃজনশীল — ৪.৩",
                  "sub": "বীজগণিতীয় রাশি",
                  "questions": 3,
                  "time": "1.5 hrs",
                  "marks": 30,
                  "badge": "Featured",
                  "accent": "#1e3a8a"
                },
                {
                  "id": "mathcreative5",
                  "file": "mathcreative5.json",
                  "label": "সৃজনশীল — ৫",
                  "sub": "সমীকরণ",
                  "questions": 5,
                  "time": "2 hrs",
                  "marks": 50,
                  "badge": "Popular",
                  "accent": "#7c3aed"
                }
              ]
            }
          ]
        },
        {
          "id": "science",
          "label": "বিজ্ঞান",
          "icon": "biotech",
          "color": "#0d9488",
          "description": "খাদ্য, পুষ্টি, পরিবেশ",
          "types": [
            {
              "id": "mcq",
              "label": "MCQ",
              "chapters": [
                {
                  "id": "sciencemcq6",
                  "file": "sciencemcq6.json",
                  "label": "সংবেদী অঙ্গ — ৬",
                  "sub": "126টি প্রশ্ন • সংবেদী অঙ্গ",
                  "questions": 126,
                  "time": "90 min",
                  "badge": "New",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq7",
                  "file": "sciencemcq7.json",
                  "label": "পদার্থের বৈশিষ্ট্য — ৭",
                  "sub": "১১৪টি প্রশ্ন • বাহ্যিক প্রভাব",
                  "questions": 114,
                  "time": "90 min",
                  "badge": "New",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq8",
                  "file": "sciencemcq8.json",
                  "label": "মিশ্রণ — ৮",
                  "sub": "৪০টি প্রশ্ন",
                  "questions": 40,
                  "time": "60 min",
                  "badge": "Core",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq9",
                  "file": "sciencemcq9.json",
                  "label": "আলোর ঘটনা — ৯",
                  "sub": "৪২টি প্রশ্ন",
                  "questions": 42,
                  "time": "60 min",
                  "badge": "Core",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq10",
                  "file": "sciencemcq10.json",
                  "label": "গতি — ১০",
                  "sub": "৫২টি প্রশ্ন",
                  "questions": 52,
                  "time": "60 min",
                  "badge": "Core",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq11",
                  "file": "sciencemcq11.json",
                  "label": "বল ও সরল যন্ত্র — ১১",
                  "sub": "৫৩টি প্রশ্ন",
                  "questions": 53,
                  "time": "60 min",
                  "badge": "Board",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq12",
                  "file": "sciencemcq12.json",
                  "label": "পৃথিবীর উৎপত্তি ও গঠন — ১২",
                  "sub": "৫৬টি প্রশ্ন",
                  "questions": 56,
                  "time": "60 min",
                  "badge": "High-yield",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq13",
                  "file": "sciencemcq13.json",
                  "label": "খাদ্য ও পুষ্টি — ১৩",
                  "sub": "১২১টি প্রশ্ন",
                  "questions": 121,
                  "time": "90 min",
                  "badge": "High-yield",
                  "accent": "#0d9488"
                },
                {
                  "id": "sciencemcq14",
                  "file": "sciencemcq14.json",
                  "label": "পরিবেশের ভারসাম্য — ১৪",
                  "sub": "৭৩টি প্রশ্ন",
                  "questions": 73,
                  "time": "70 min",
                  "badge": "Core",
                  "accent": "#059669"
                }
              ]
            }
          ]
        },
        {
          "id": "english",
          "label": "English",
          "icon": "menu_book",
          "color": "#7c3aed",
          "description": "Poems — Questions & Answers",
          "types": [
            {
              "id": "poems",
              "label": "Poems Q&A",
              "label_en": "Poems Q&A",
              "chapters": [
                {
                  "id": "class6poems",
                  "file": "class6poems.json",
                  "label": "Poems — ৭টি কবিতা",
                  "sub": "Let's Play, Holding Hands, Boats Sail...",
                  "questions": 7,
                  "time": "Reading",
                  "badge": "Poem",
                  "accent": "#7c3aed"
                }
              ]
            },
            {
              "id": "paragraphs",
              "label": "Paragraphs",
              "label_en": "Paragraphs",
              "chapters": [
                {
                  "id": "class6paragraphs",
                  "file": "class6paragraphs.json",
                  "label": "Paragraphs — ১৯টি",
                  "sub": "Gen-Z, July Revolution, My School...",
                  "questions": 19,
                  "time": "Reading",
                  "badge": "Paragraph",
                  "accent": "#0ea5e9"
                }
              ]
            }
          ]
        }
      ]
    },
    {
      "id": "7",
      "label": "সপ্তম",
      "label_en": "Class 7",
      "icon": "menu_book",
      "color": "#f59e0b",
      "gradient": "from-amber-500 to-orange-400",
      "description": "English Grammar • Narration • Letters",
          "subjects": [
            {
              "id": "english",
              "label": "English",
              "icon": "menu_book",
              "color": "#4f46e5",
              "description": "Narration • Compositions • Formal Letters • Paragraph Writing",
              "types": [
            {
              "id": "compositions",
              "label": "Compositions",
              "label_en": "Compositions",
              "chapters": [
                {
                  "id": "class7compositions",
                  "file": "class7compositions.json",
                  "label": "Compositions — ৭টি",
                  "sub": "Prize Giving, Village Doctor, Tree Plantation...",
                  "questions": 7,
                  "time": "Reading",
                  "badge": "Composition",
                  "accent": "#7c3aed"
                }
              ]
            },
            {
              "id": "grammar",
              "label": "Grammar",
              "label_en": "Grammar",
              "chapters": [
                {
                  "id": "class7narration",
                  "file": "class7narration.json",
                  "label": "Narration — মডেল ১৬–৩০",
                  "sub": "Assertive, Question, Order, Let...",
                  "questions": 25,
                  "time": "Reading",
                  "badge": "Grammar",
                  "accent": "#4f46e5"
                }
              ]
            },
            {
              "id": "paragraphs",
              "label": "Paragraphs",
              "label_en": "Paragraphs",
              "chapters": [
                {
                  "id": "class7paragraphs",
                  "file": "class7paragraphs.json",
                  "label": "Paragraphs — ৫টি",
                  "sub": "Computer, Early Rising, Tea Stall...",
                  "questions": 5,
                  "time": "Reading",
                  "badge": "Paragraph",
                  "accent": "#0ea5e9"
                }
              ]
            },
            {
              "id": "formal",
              "label": "Formal Letters",
              "label_en": "Formal Letters",
              "chapters": [
                {
                  "id": "class7formal",
                  "file": "class7formal.json",
                  "label": "Formal Letters — ১টি",
                  "sub": "School Canteen Application",
                  "questions": 1,
                  "time": "Reading",
                  "badge": "Formal",
                  "accent": "#1e40af"
                }
              ]
            }
          ]
        }
      ]
    },
    {
      "id": "8",
      "label": "অষ্টম",
      "label_en": "Class 8",
      "icon": "auto_stories",
      "color": "#7c3aed",
      "gradient": "from-violet-600 to-fuchsia-500",
      "description": "English • Composition & Essays",
      "subjects": [
        {
          "id": "english",
          "label": "English",
          "icon": "edit_note",
          "color": "#7c3aed",
          "description": "Compositions • Letters • Reading",
          "types": [
            {
              "id": "composition",
              "label": "Composition & Essays",
              "label_en": "Composition & Essays",
              "chapters": [
                {
                  "id": "class8essays",
                  "file": "class8essays.json",
                  "label": "Compositions & Essays — ২৩টি",
                  "sub": "Value of Time, Train Journey, Floods...",
                  "questions": 23,
                  "time": "Reading",
                  "badge": "Composition",
                  "accent": "#7c3aed"
                }
              ]
            },
            {
              "id": "paragraphs",
              "label": "Paragraphs",
              "chapters": [
                {
                  "id": "class8paragraphs",
                  "file": "class8paragraphs.json",
                  "label": "Paragraphs — ৫টি",
                  "sub": "Water Pollution, Teacher, Traffic...",
                  "questions": 5,
                  "time": "Reading",
                  "badge": "Paragraph",
                  "accent": "#0ea5e9"
                }
              ]
            },
            {
              "id": "letters",
              "label": "Letters",
              "label_en": "Letters",
              "chapters": [
                {
                  "id": "class8formal",
                  "file": "class8formal.json",
                  "label": "Formal Letters — ২টি",
                  "sub": "Applications • Road, Admission",
                  "questions": 2,
                  "time": "Reading",
                  "badge": "Formal",
                  "accent": "#1e40af"
                },
                {
                  "id": "class8informal",
                  "file": "class8informal.json",
                  "label": "Informal Letters — ২টি",
                  "sub": "Friend • Invitation, English",
                  "questions": 2,
                  "time": "Reading",
                  "badge": "Informal",
                  "accent": "#059669"
                }
              ]
            },
            {
              "id": "emails",
              "label": "E-mails",
              "label_en": "E-mails",
              "chapters": [
                {
                  "id": "class8emails",
                  "file": "class8emails.json",
                  "label": "E-mails — ১৭টি",
                  "sub": "Pen Friend, Birthday, Picnic, DC Relief...",
                  "questions": 17,
                  "time": "Reading",
                  "badge": "E-mail",
                  "accent": "#0891b2"
                }
              ]
            },
            {
              "id": "stories",
              "label": "Completing Stories",
              "label_en": "Completing Stories",
              "chapters": [
                {
                  "id": "class8stories",
                  "file": "class8stories.json",
                  "label": "Stories — ২৫টি",
                  "sub": "Earthquake to Azam Shah...",
                  "questions": 25,
                  "time": "Reading",
                  "badge": "Story",
                  "accent": "#f59e0b"
                }
              ]
            },
            {
              "id": "poems",
              "label": "Poems Q&A",
              "label_en": "Poems Q&A",
              "chapters": [
                {
                  "id": "class8poems",
                  "file": "class8poems.json",
                  "label": "Poems — ৯টি কবিতা",
                  "sub": "Hason Raja, Jasimuddin, Kipling...",
                  "questions": 9,
                  "time": "Reading",
                  "badge": "Poem",
                  "accent": "#7c3aed"
                }
              ]
            },
            {
              "id": "grammar",
              "label": "Grammar",
              "label_en": "Grammar",
              "chapters": [
                {
                  "id": "class8changing",
                  "file": "class8changing.json",
                  "label": "Changing Sentence — ১২টি Rule",
                  "sub": "৭৪টি Solved • Affirmative, Degree, Voice",
                  "questions": 12,
                  "time": "Reading",
                  "badge": "Grammar",
                  "accent": "#4f46e5"
                }
              ]
            },
            {
              "id": "seen_vocabulary",
              "label": "Seen Comprehension Vocabulary",
              "label_en": "Seen Comprehension Vocabulary",
              "chapters": [
                {
                  "id": "seen_comprehension_vocabulary",
                  "file": "seen_comprehension_vocabulary.json",
                  "label": "Seen Vocabulary — ২৫ Lesson",
                  "sub": "২৬৪ শব্দ • Meaning, Synonym, Antonym",
                  "questions": 264,
                  "time": "Reading",
                  "badge": "Vocabulary",
                  "accent": "#0d9488"
                }
              ]
            }
          ]
        },
        {
          "id": "jrbs2026",
          "label": "জুনিয়র বৃত্তি সহায়িকা ২০২৬",
          "icon": "workspace_premium",
          "color": "#d97706",
          "description": "Junior Scholarship Guide 2026 • English",
          "subjects": [
            {
              "id": "jrbs_english",
              "label": "English",
              "icon": "edit_note",
              "color": "#d97706",
              "description": "Writing, Letter, E-mail, Stories, Verb • 66 টি",
              "types": [
                {
                  "id": "compositions",
                  "label": "Writing Composition — English",
                  "chapters": [
                    {
                      "id": "jrbs2026_english_writing",
                      "file": "jrbs2026_english_writing.json",
                      "label": "Writing — ২০টি Composition",
                      "sub": "Train, Dream, Measles, School...",
                      "questions": 20,
                      "time": "Reading",
                      "badge": "Scholarship",
                      "accent": "#d97706"
                    }
                  ]
                },
                {
                  "id": "letters",
                  "label": "Writing Letter — English",
                  "chapters": [
                    {
                      "id": "jrbs2026_english_letters",
                      "file": "jrbs2026_english_letters.json",
                      "label": "Letter — ১২টি Letter",
                      "sub": "Informal, Formal, Application...",
                      "questions": 12,
                      "time": "Reading",
                      "badge": "Scholarship",
                      "accent": "#d97706"
                    }
                  ]
                },
                {
                  "id": "emails",
                  "label": "Writing E-mail — English",
                  "chapters": [
                    {
                      "id": "jrbs2026_english_emails",
                      "file": "jrbs2026_english_emails.json",
                      "label": "E-mail — ৪টি E-mail",
                      "sub": "Friendship, Scholarship, Gift...",
                      "questions": 4,
                      "time": "Reading",
                      "badge": "Scholarship",
                      "accent": "#d97706"
                    }
                  ]
                },
                {
                  "id": "stories",
                  "label": "Completing Stories — English",
                  "chapters": [
                    {
                      "id": "jrbs2026_english_stories",
                      "file": "jrbs2026_english_stories.json",
                      "label": "Stories — ২৫টি",
                      "sub": "Earthquake to Azam Shah...",
                      "questions": 25,
                      "time": "Reading",
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                  "label": "Right Form of Verb (Lecture Book) — English",
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}