from reportlab.lib.pagesizes import A4
from reportlab.lib import colors
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.units import mm, cm
from reportlab.platypus import (
    SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle,
    HRFlowable, KeepTogether
)
from reportlab.lib.enums import TA_CENTER, TA_LEFT, TA_JUSTIFY
from reportlab.pdfbase import pdfmetrics
from reportlab.pdfbase.ttfonts import TTFont

doc_path = "/tmp/workspace/fmt-bns-notes/BNS_BNSS_FMT_Revision_Notes.pdf"

doc = SimpleDocTemplate(
    doc_path,
    pagesize=A4,
    rightMargin=15*mm,
    leftMargin=15*mm,
    topMargin=18*mm,
    bottomMargin=18*mm
)

styles = getSampleStyleSheet()

# Custom styles
NAVY = colors.HexColor("#1a2e5a")
TEAL = colors.HexColor("#0e6b7a")
GOLD = colors.HexColor("#c8860a")
LIGHT_BLUE = colors.HexColor("#dbeeff")
LIGHT_GREEN = colors.HexColor("#e6f7f0")
LIGHT_YELLOW = colors.HexColor("#fff8e1")
LIGHT_PINK = colors.HexColor("#fce4ec")
LIGHT_PURPLE = colors.HexColor("#f3e5f5")
LIGHT_ORANGE = colors.HexColor("#fff3e0")
WHITE = colors.white
DARK_GRAY = colors.HexColor("#2d2d2d")

title_style = ParagraphStyle(
    "TitleStyle",
    parent=styles["Title"],
    fontSize=20,
    textColor=WHITE,
    alignment=TA_CENTER,
    fontName="Helvetica-Bold",
    spaceAfter=4,
)
subtitle_style = ParagraphStyle(
    "SubtitleStyle",
    parent=styles["Normal"],
    fontSize=10,
    textColor=colors.HexColor("#c8e6ff"),
    alignment=TA_CENTER,
    fontName="Helvetica",
    spaceAfter=2,
)
section_header_style = ParagraphStyle(
    "SectionHeader",
    parent=styles["Normal"],
    fontSize=13,
    textColor=WHITE,
    fontName="Helvetica-Bold",
    alignment=TA_LEFT,
    leftIndent=4,
    spaceAfter=2,
    spaceBefore=2,
)
subsection_style = ParagraphStyle(
    "SubsectionStyle",
    parent=styles["Normal"],
    fontSize=10.5,
    textColor=NAVY,
    fontName="Helvetica-Bold",
    alignment=TA_LEFT,
    spaceBefore=4,
    spaceAfter=2,
)
body_style = ParagraphStyle(
    "BodyStyle",
    parent=styles["Normal"],
    fontSize=9.5,
    textColor=DARK_GRAY,
    fontName="Helvetica",
    alignment=TA_JUSTIFY,
    spaceBefore=1,
    spaceAfter=1,
    leading=13,
)
note_style = ParagraphStyle(
    "NoteStyle",
    parent=styles["Normal"],
    fontSize=8.5,
    textColor=colors.HexColor("#555555"),
    fontName="Helvetica-Oblique",
    alignment=TA_LEFT,
    leftIndent=8,
    spaceBefore=1,
    spaceAfter=1,
)
small_bold = ParagraphStyle(
    "SmallBold",
    parent=styles["Normal"],
    fontSize=9,
    textColor=DARK_GRAY,
    fontName="Helvetica-Bold",
)
table_header_style = ParagraphStyle(
    "TableHeader",
    parent=styles["Normal"],
    fontSize=9,
    textColor=WHITE,
    fontName="Helvetica-Bold",
    alignment=TA_CENTER,
)
table_cell_style = ParagraphStyle(
    "TableCell",
    parent=styles["Normal"],
    fontSize=8.5,
    textColor=DARK_GRAY,
    fontName="Helvetica",
    alignment=TA_LEFT,
    leading=11,
)
table_cell_center = ParagraphStyle(
    "TableCellCenter",
    parent=styles["Normal"],
    fontSize=8.5,
    textColor=DARK_GRAY,
    fontName="Helvetica",
    alignment=TA_CENTER,
    leading=11,
)
highlight_style = ParagraphStyle(
    "HighlightStyle",
    parent=styles["Normal"],
    fontSize=9,
    textColor=colors.HexColor("#7b0000"),
    fontName="Helvetica-Bold",
    leftIndent=6,
)

story = []

# ─── TITLE BANNER ────────────────────────────────────────────────────────────
def make_title_banner():
    data = [[
        Paragraph("BNS & BNSS Sections", title_style),
        ],
        [Paragraph("Relevant to Forensic Medicine & Toxicology", subtitle_style)],
        [Paragraph("As per PC Ignatius | Quick Revision Notes", subtitle_style)],
    ]
    t = Table(data, colWidths=[180*mm])
    t.setStyle(TableStyle([
        ("BACKGROUND", (0,0), (-1,-1), NAVY),
        ("ALIGN", (0,0), (-1,-1), "CENTER"),
        ("TOPPADDING", (0,0), (-1,0), 10),
        ("BOTTOMPADDING", (0,-1), (-1,-1), 10),
        ("LEFTPADDING", (0,0), (-1,-1), 8),
        ("RIGHTPADDING", (0,0), (-1,-1), 8),
        ("ROUNDEDCORNERS", [6]),
    ]))
    return t

story.append(make_title_banner())
story.append(Spacer(1, 6*mm))

# ─── INTRO BOX ───────────────────────────────────────────────────────────────
intro_data = [[Paragraph(
    "<b>KEY:</b>  BNS = Bharatiya Nyaya Sanhita 2023 (replaces IPC) &nbsp;|&nbsp; "
    "BNSS = Bharatiya Nagarik Suraksha Sanhita 2023 (replaces CrPC) &nbsp;|&nbsp; "
    "BSA = Bharatiya Sakshya Adhiniyam 2023 (replaces IEA)",
    body_style
)]]
intro_t = Table(intro_data, colWidths=[180*mm])
intro_t.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,-1), LIGHT_YELLOW),
    ("BOX", (0,0), (-1,-1), 1, GOLD),
    ("TOPPADDING", (0,0), (-1,-1), 5),
    ("BOTTOMPADDING", (0,0), (-1,-1), 5),
    ("LEFTPADDING", (0,0), (-1,-1), 8),
    ("RIGHTPADDING", (0,0), (-1,-1), 8),
]))
story.append(intro_t)
story.append(Spacer(1, 5*mm))

# ─────────────────────────────────────────────────────────────────────────────
# HELPER: section banner
# ─────────────────────────────────────────────────────────────────────────────
def section_banner(text, color=TEAL):
    data = [[Paragraph(text, section_header_style)]]
    t = Table(data, colWidths=[180*mm])
    t.setStyle(TableStyle([
        ("BACKGROUND", (0,0), (-1,-1), color),
        ("TOPPADDING", (0,0), (-1,-1), 5),
        ("BOTTOMPADDING", (0,0), (-1,-1), 5),
        ("LEFTPADDING", (0,0), (-1,-1), 8),
        ("RIGHTPADDING", (0,0), (-1,-1), 8),
    ]))
    return t

# ─────────────────────────────────────────────────────────────────────────────
# SECTION 1: BNS — OFFENCES (ex-IPC sections)
# ─────────────────────────────────────────────────────────────────────────────
story.append(section_banner("SECTION 1: BNS 2023 — Offences Relevant to FMT", color=NAVY))
story.append(Spacer(1, 3*mm))

# TABLE: BNS sections
bns_headers = [
    Paragraph("BNS Sec.", table_header_style),
    Paragraph("Old IPC", table_header_style),
    Paragraph("Topic", table_header_style),
    Paragraph("Key Points for FMT", table_header_style),
]

bns_data = [
    # General
    ["11", "44", "Injury", "Bodily harm to any person — foundation for wound description in MLRs"],
    ["2(17)", "—", "Child", "Person <18 yrs — relevant to infanticide, POCSO cases"],
    ["2(20)", "—", "Death", "Cessation of life — medico-legal definition used in PME"],
    ["2(22)", "—", "Document", "Includes medical certificates, post-mortem reports"],
    ["2(55)", "—", "Wrongful gain/loss", "Relevant to medical negligence fraud cases"],
    # Culpable homicide & murder
    ["100", "299", "Culpable Homicide (CH)", "Causing death with intention / knowledge it will likely cause death"],
    ["101", "300", "Murder", "CH becomes murder if done with intention to cause death or bodily injury sufficient to cause death; Exceptions: grave provocation, exceeding private defence"],
    ["105", "304A", "Death by Negligence", "No intention; rash/negligent act by doctor = medical negligence; 2 yrs imprisonment / fine / both"],
    ["106", "304B", "Dowry Death", "Death within 7 yrs of marriage due to burns/bodily injury; ILL-TREATMENT by husband or relatives"],
    ["109", "307", "Attempt to Murder", "Act done with intention/knowledge to cause death"],
    ["115", "319", "Hurt", "Causing bodily pain, disease or infirmity"],
    ["116", "320", "Grievous Hurt", "Emasculation; permanent privation of sight/hearing; loss of any limb/joint; permanent disfiguration of head/face; fracture or dislocation of bone/tooth; any hurt endangering life / causing 20-day severe body pain"],
    ["117", "321", "Voluntarily causing Hurt", "Person causes hurt; used in MLR for classifying assault injuries"],
    ["118", "322", "Voluntarily causing Grievous Hurt", "—"],
    ["124", "326A", "Acid Attack", "Permanent or partial damage by acid; min 10 yrs to life imprisonment"],
    ["125", "326B", "Attempt to throw Acid", "2–7 yrs imprisonment"],
    ["131", "338", "Grievous Hurt by Rash/Negligent Act", "Endangering life/safety of others; 2 yrs / fine / both"],
    ["138", "304A", "Causing Death by Negligence", "Rash/negligent act not amounting to CH — medical negligence"],
    # Sexual offences
    ["63", "375", "Rape", "6 exceptions: includes age <18 always rape; MLR mandatory; examination by female doctor preferred"],
    ["64", "376", "Punishment for Rape", "Min 10 yrs to life + fine"],
    ["65", "376A–D", "Aggravated Rape", "By police/public servant/gang rape; min 20 yrs to life/death"],
    ["69", "376C", "Sexual intercourse by deceit/false promise of marriage", "Imprisonment up to 10 yrs + fine"],
    ["70", "376D", "Gang Rape", "Rigorous imprisonment ≥20 yrs to life"],
    ["74", "354", "Outraging Modesty", "1–5 yrs; includes stalking"],
    ["75", "354A", "Sexual Harassment", "Up to 3 yrs / fine / both"],
    ["77", "354C", "Voyeurism", "1st offence: 1–3 yrs; 2nd: 3–7 yrs"],
    ["78", "354D", "Stalking", "1st: 3 yrs; 2nd: 5 yrs"],
    ["94", "377", "Unnatural Offences", "Voluntarily having carnal intercourse against the order of nature"],
    # Abortion
    ["88", "312", "Causing Miscarriage (Abortion)", "Unless to save mother's life; 3 yrs / fine / both; 7 yrs if woman quick with child"],
    ["89", "313", "Abortion without Consent", "Life imprisonment or 10 yrs + fine"],
    ["90", "314", "Death caused in attempt to cause Miscarriage", "10 yrs or life imprisonment"],
    ["91", "315", "Acts to prevent child from being born alive / cause death after birth", "10 yrs / fine / both"],
    ["92", "316", "Causing Death of Quick Unborn Child", "Culpable homicide – life imprisonment"],
    # Infanticide & abandonment
    ["93", "317", "Exposure & Abandonment of child <12 yrs", "7 yrs / fine / both"],
    ["86", "310B", "Child Trafficking", "—"],
    # False evidence/certificates
    ["227", "191", "Giving False Evidence", "7 yrs + fine; relevant to doctors giving false certificates"],
    ["228", "192", "Fabricating False Evidence", "—"],
    ["231", "196", "Using False Evidence as True", "—"],
    ["237", "202", "Omission to give information", "Withholding info from magistrate/police"],
    ["240", "204", "Destruction of Document", "Destroying medical/legal evidence"],
    # Negligence / Public servant
    ["202", "304A", "Medical Negligence (general)", "Rash/negligent act; NOT intentional killing"],
    ["174B", "197B", "False certificate by public servant", "1 yr / fine / both — relevant to MOs issuing false certificates"],
    # Poisoning
    ["122", "328", "Causing Hurt by Poison", "Administering poison/stupefying substance; 10 yrs / fine"],
    # Consent
    ["20", "87", "Consent – no offence for acts causing grievous hurt by consent", "Consent <18 yrs = not valid"],
    ["21", "88", "Medical treatment under consent", "Good faith treatment; patient consents to harm; valid legal defence for doctors"],
    ["22", "89", "Act done in good faith for child/insane person", "Guardian consent valid"],
]

bns_table_data = [bns_headers]
for row in bns_data:
    bns_table_data.append([
        Paragraph(f"<b>{row[0]}</b>", table_cell_center),
        Paragraph(row[1], table_cell_center),
        Paragraph(f"<b>{row[2]}</b>", table_cell_style),
        Paragraph(row[3], table_cell_style),
    ])

bns_t = Table(
    bns_table_data,
    colWidths=[18*mm, 18*mm, 44*mm, 100*mm],
    repeatRows=1
)
bns_t.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,0), NAVY),
    ("TEXTCOLOR", (0,0), (-1,0), WHITE),
    ("ALIGN", (0,0), (1,-1), "CENTER"),
    ("VALIGN", (0,0), (-1,-1), "TOP"),
    ("FONTNAME", (0,0), (-1,0), "Helvetica-Bold"),
    ("FONTSIZE", (0,0), (-1,0), 9),
    ("TOPPADDING", (0,0), (-1,-1), 3),
    ("BOTTOMPADDING", (0,0), (-1,-1), 3),
    ("LEFTPADDING", (0,0), (-1,-1), 4),
    ("RIGHTPADDING", (0,0), (-1,-1), 4),
    ("ROWBACKGROUNDS", (0,1), (-1,-1), [WHITE, LIGHT_BLUE]),
    ("GRID", (0,0), (-1,-1), 0.3, colors.HexColor("#aaaaaa")),
    ("LINEBELOW", (0,0), (-1,0), 1.5, GOLD),
]))
story.append(bns_t)
story.append(Spacer(1, 5*mm))

# ─────────────────────────────────────────────────────────────────────────────
# SECTION 2: BNSS — Procedure (ex-CrPC)
# ─────────────────────────────────────────────────────────────────────────────
story.append(section_banner("SECTION 2: BNSS 2023 — Procedure Relevant to FMT", color=colors.HexColor("#145a32")))
story.append(Spacer(1, 3*mm))

bnss_headers = [
    Paragraph("BNSS Sec.", table_header_style),
    Paragraph("Old CrPC", table_header_style),
    Paragraph("Topic", table_header_style),
    Paragraph("Key Points for FMT", table_header_style),
]

bnss_data = [
    ["173", "154", "FIR (First Information Report)", "Duty of police to register; copy to magistrate; doctor informs police of ML case"],
    ["176(1)", "174", "Inquest by Police", "Investigation of unnatural/sudden death; constable/police officer in charge"],
    ["176(3)", "NEW", "Forensic Expert at Scene", "MANDATORY forensic team for offences punishable ≥7 yrs; 5-yr implementation period; forensic expert must document & collect evidence"],
    ["194", "176", "Magistrate Inquest", "Inquest by Executive Magistrate: dowry deaths, police custody deaths, gang rape victims, acid attack deaths"],
    ["195", "177", "Jurisdiction of Inquest", "Magistrate of district where body found"],
    ["230", "198B", "Complaint for Rape of wife", "Court cannot take cognisance unless wife files complaint (wife ≥18 yrs)"],
    ["248", "161", "Examination of witnesses by police", "Statements to police — not admissible; doctor's verbal information"],
    ["249", "162", "Statements not to be signed; use of statement", "Police statements can be used to contradict a witness in court"],
    ["312", "273", "Evidence to be in presence of accused", "Doctor's court testimony given in presence of accused"],
    ["329", "293", "Government Scientific Expert's Report", "Written report admissible in evidence without oral testimony; BNSS expands to 'any other scientific expert' beyond govt expert; Experts listed: FSL, Chemical Examiner, Serologist, Fingerprint, Handwriting, Ballistic experts + others"],
    ["349", "311A", "Power of Magistrate to order samples", "Finger impressions, handwriting, voice samples, blood, saliva, semen etc. on written order from 1st class Magistrate; BNSS allows without prior arrest (broader than old CrPC 311A)"],
    ["350", "312", "Examination of accused by doctor", "Medical examination of accused by registered medical practitioner on request of police officer (rape cases)"],
    ["351", "313", "Power to examine accused", "Court may examine accused; used in mental state assessments"],
    ["376", "327", "Trial of rape in camera", "In-camera trial for rape; identity of victim protected"],
    ["397", "357", "Compensation to victims", "Court can award compensation to victim of crime including rape/acid attack"],
    ["530(a)", "509", "Insult to modesty – word/gesture", "Simple imprisonment up to 3 yrs + fine"],
    ["184", "185", "Examination of person in police custody", "Magistrate can order medical examination; important in custodial torture cases"],
    ["360", "316", "Detention in safe custody (insane accused)", "Accused of unsound mind detained until fit for trial — Sec 84 BNS defence applies"],
    ["505", "482", "Inherent powers of High Court", "HC can quash FIR/proceedings — relevant to medical negligence FIRs"],
]

bnss_table_data = [bnss_headers]
for row in bnss_data:
    bnss_table_data.append([
        Paragraph(f"<b>{row[0]}</b>", table_cell_center),
        Paragraph(row[1], table_cell_center),
        Paragraph(f"<b>{row[2]}</b>", table_cell_style),
        Paragraph(row[3], table_cell_style),
    ])

bnss_t = Table(
    bnss_table_data,
    colWidths=[18*mm, 18*mm, 44*mm, 100*mm],
    repeatRows=1
)
bnss_t.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,0), colors.HexColor("#145a32")),
    ("TEXTCOLOR", (0,0), (-1,0), WHITE),
    ("ALIGN", (0,0), (1,-1), "CENTER"),
    ("VALIGN", (0,0), (-1,-1), "TOP"),
    ("FONTNAME", (0,0), (-1,0), "Helvetica-Bold"),
    ("FONTSIZE", (0,0), (-1,0), 9),
    ("TOPPADDING", (0,0), (-1,-1), 3),
    ("BOTTOMPADDING", (0,0), (-1,-1), 3),
    ("LEFTPADDING", (0,0), (-1,-1), 4),
    ("RIGHTPADDING", (0,0), (-1,-1), 4),
    ("ROWBACKGROUNDS", (0,1), (-1,-1), [WHITE, LIGHT_GREEN]),
    ("GRID", (0,0), (-1,-1), 0.3, colors.HexColor("#aaaaaa")),
    ("LINEBELOW", (0,0), (-1,0), 1.5, GOLD),
]))
story.append(bnss_t)
story.append(Spacer(1, 5*mm))

# ─────────────────────────────────────────────────────────────────────────────
# SECTION 3: BSA (Bharatiya Sakshya Adhiniyam) — Evidence
# ─────────────────────────────────────────────────────────────────────────────
story.append(section_banner("SECTION 3: BSA 2023 — Evidence Relevant to FMT", color=colors.HexColor("#6d1a7a")))
story.append(Spacer(1, 3*mm))

bsa_headers = [
    Paragraph("BSA Sec.", table_header_style),
    Paragraph("Old IEA", table_header_style),
    Paragraph("Topic", table_header_style),
    Paragraph("Key Points for FMT", table_header_style),
]
bsa_data = [
    ["26", "32(1)", "Dying Declaration", "Statement by person who believes death imminent; admissible even if declarant dies; doctor may record; no oath needed; thumb impression accepted"],
    ["27", "32(2)–(8)", "Statements by deceased in other situations", "Includes cause of death of deceased in proceedings where their death is in question"],
    ["39", "45", "Expert Witness", "Opinions of expert in science, art, foreign law etc. — doctor as expert witness in court"],
    ["40", "46", "Facts bearing upon opinions of experts", "Facts on which expert's opinion is based — basis of medico-legal report"],
    ["57", "65B", "Admissibility of Electronic Records", "Electronic evidence (CCTV, digital records) — important in new era forensics"],
    ["63", "73", "Comparison of signatures / handwriting", "Handwriting expert evidence — questioned documents"],
    ["30", "35", "Relevance of entries in public records", "Hospital admission records, death registers — admissible as evidence"],
    ["114", "114", "Presumptions of fact by court", "Court may presume: rape accused knew victim was <18 if she looks <18; woman's recent absence = presumed dead if 7 yrs"],
    ["118", "118", "Who may testify", "All persons competent to testify unless court considers them unable to understand due to mental illness etc."],
    ["119", "119", "Deaf-mute witness", "Can give evidence in writing or by signs; relevant to forensic psychiatry"],
    ["166", "165", "Judge's power to ask questions", "Judge may ask any question in any form at any time — affects expert witness examination"],
]
bsa_table_data = [bsa_headers]
for row in bsa_data:
    bsa_table_data.append([
        Paragraph(f"<b>{row[0]}</b>", table_cell_center),
        Paragraph(row[1], table_cell_center),
        Paragraph(f"<b>{row[2]}</b>", table_cell_style),
        Paragraph(row[3], table_cell_style),
    ])
bsa_t = Table(
    bsa_table_data,
    colWidths=[18*mm, 18*mm, 44*mm, 100*mm],
    repeatRows=1
)
bsa_t.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,0), colors.HexColor("#6d1a7a")),
    ("TEXTCOLOR", (0,0), (-1,0), WHITE),
    ("ALIGN", (0,0), (1,-1), "CENTER"),
    ("VALIGN", (0,0), (-1,-1), "TOP"),
    ("FONTNAME", (0,0), (-1,0), "Helvetica-Bold"),
    ("FONTSIZE", (0,0), (-1,0), 9),
    ("TOPPADDING", (0,0), (-1,-1), 3),
    ("BOTTOMPADDING", (0,0), (-1,-1), 3),
    ("LEFTPADDING", (0,0), (-1,-1), 4),
    ("RIGHTPADDING", (0,0), (-1,-1), 4),
    ("ROWBACKGROUNDS", (0,1), (-1,-1), [WHITE, LIGHT_PURPLE]),
    ("GRID", (0,0), (-1,-1), 0.3, colors.HexColor("#aaaaaa")),
    ("LINEBELOW", (0,0), (-1,0), 1.5, GOLD),
]))
story.append(bsa_t)
story.append(Spacer(1, 5*mm))

# ─────────────────────────────────────────────────────────────────────────────
# SECTION 4: TOPIC-WISE QUICK CROSS-REFERENCE
# ─────────────────────────────────────────────────────────────────────────────
story.append(section_banner("SECTION 4: Topic-wise Quick Cross Reference (Exam-Ready)", color=colors.HexColor("#8b1a1a")))
story.append(Spacer(1, 3*mm))

xref_data = [
    [Paragraph("<b>FMT Topic</b>", table_header_style), Paragraph("<b>BNS Section</b>", table_header_style), Paragraph("<b>BNSS Section</b>", table_header_style), Paragraph("<b>BSA Section</b>", table_header_style)],
    [Paragraph("<b>Wounds / Injuries</b>", table_cell_style), Paragraph("Sec 11 (Injury)\nSec 115–131 (Hurt → Grievous Hurt)\nSec 124–125 (Acid Attack)", table_cell_style), Paragraph("Sec 350 (Medical exam of accused)\nSec 184 (Custody exam)", table_cell_style), Paragraph("Sec 39 (Expert opinion)\nSec 40 (Expert's basis)", table_cell_style)],
    [Paragraph("<b>Death Investigation</b>", table_cell_style), Paragraph("Sec 100–105 (CH/Murder)\nSec 106 (Dowry death)\nSec 105 (Negligent death)", table_cell_style), Paragraph("Sec 176(1) (Police inquest)\nSec 194 (Magistrate inquest)\nSec 176(3) (Forensic expert at scene)", table_cell_style), Paragraph("Sec 26 (Dying Declaration)\nSec 27 (Deceased's statements)", table_cell_style)],
    [Paragraph("<b>Rape / Sexual Assault</b>", table_cell_style), Paragraph("Sec 63–70 (Rape, aggravated, gang)\nSec 74–78 (Outraging modesty)\nSec 94 (Unnatural offences)", table_cell_style), Paragraph("Sec 350 (Exam of accused)\nSec 376 (In-camera trial)\nSec 230 (Complaint by wife)", table_cell_style), Paragraph("Sec 114 (Presumption re: age)\nSec 39 (Expert witness)", table_cell_style)],
    [Paragraph("<b>Abortion / MTP</b>", table_cell_style), Paragraph("Sec 88–92 (Miscarriage, quick child)\nSec 91–92 (Infanticide-adjacent)", table_cell_style), Paragraph("—", table_cell_style), Paragraph("—", table_cell_style)],
    [Paragraph("<b>Infanticide / Child</b>", table_cell_style), Paragraph("Sec 93 (Exposure of child)\nSec 2(17) (Child <18 yrs)\nSec 86 (Child trafficking)", table_cell_style), Paragraph("Sec 176(3) (Crime scene forensics)", table_cell_style), Paragraph("Sec 118–119 (Witness competency)", table_cell_style)],
    [Paragraph("<b>Medical Negligence</b>", table_cell_style), Paragraph("Sec 105 (Negligent death / 304A)\nSec 131 (GH by negligence)\nSec 21 (Consent – doctor defence)", table_cell_style), Paragraph("Sec 505 (HC quash FIR)\nSec 248 (Witness examination)", table_cell_style), Paragraph("Sec 39 (Expert witness)", table_cell_style)],
    [Paragraph("<b>Poisoning</b>", table_cell_style), Paragraph("Sec 122 (Causing hurt by poison)\nSec 105 (Negligent death by drugs)", table_cell_style), Paragraph("Sec 329 (Expert report admissible)\nSec 349 (Biological sample order)", table_cell_style), Paragraph("Sec 39 (Toxicologist as expert)", table_cell_style)],
    [Paragraph("<b>Identification / Forensic Science</b>", table_cell_style), Paragraph("—", table_cell_style), Paragraph("Sec 329 (Govt scientific expert)\nSec 349 (Fingerprints/voice samples)\nSec 176(3) (Forensic at scene)", table_cell_style), Paragraph("Sec 57 (Electronic evidence)\nSec 63 (Handwriting comparison)", table_cell_style)],
    [Paragraph("<b>Mental Health / Psychiatry</b>", table_cell_style), Paragraph("Sec 22 BNS (Unsoundness of mind)\nSec 84 IPC → Sec 22 BNS: McNaughten rules", table_cell_style), Paragraph("Sec 360 (Detention of insane accused)\nSec 351 (Examination of accused)", table_cell_style), Paragraph("Sec 118 (Competency of witness)", table_cell_style)],
    [Paragraph("<b>Dying Declaration</b>", table_cell_style), Paragraph("—", table_cell_style), Paragraph("Sec 176 (Inquest note dying decl.)", table_cell_style), Paragraph("Sec 26 BSA (Dying Declaration admissible)\nDoctor's fitness certificate validates", table_cell_style)],
    [Paragraph("<b>False Certificates</b>", table_cell_style), Paragraph("Sec 227–228 (False evidence)\nSec 174B (False cert by public servant)", table_cell_style), Paragraph("—", table_cell_style), Paragraph("Sec 30 (Public record entries)", table_cell_style)],
]
xref_t = Table(
    xref_data,
    colWidths=[40*mm, 50*mm, 48*mm, 42*mm],
    repeatRows=1
)
xref_t.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,0), colors.HexColor("#8b1a1a")),
    ("TEXTCOLOR", (0,0), (-1,0), WHITE),
    ("VALIGN", (0,0), (-1,-1), "TOP"),
    ("FONTNAME", (0,0), (-1,0), "Helvetica-Bold"),
    ("TOPPADDING", (0,0), (-1,-1), 3),
    ("BOTTOMPADDING", (0,0), (-1,-1), 3),
    ("LEFTPADDING", (0,0), (-1,-1), 4),
    ("RIGHTPADDING", (0,0), (-1,-1), 4),
    ("ROWBACKGROUNDS", (0,1), (-1,-1), [WHITE, LIGHT_PINK]),
    ("GRID", (0,0), (-1,-1), 0.3, colors.HexColor("#aaaaaa")),
    ("LINEBELOW", (0,0), (-1,0), 1.5, GOLD),
]))
story.append(xref_t)
story.append(Spacer(1, 5*mm))

# ─────────────────────────────────────────────────────────────────────────────
# SECTION 5: HIGH-YIELD MNEMONICS & MEMORY AIDS
# ─────────────────────────────────────────────────────────────────────────────
story.append(section_banner("SECTION 5: High-Yield Mnemonics & Memory Aids", color=colors.HexColor("#b35900")))
story.append(Spacer(1, 3*mm))

mnemonics = [
    ("GRIEVOUS HURT (BNS Sec.116) — Mnemonic: 'E-PELL-FBH'",
     "E = Emasculation\n"
     "P = Privation of sight (permanent)\n"
     "E = Ear (permanent privation of hearing)\n"
     "L = Limb / joint loss (any member / joint)\n"
     "L = Look (permanent disfiguration of head/face)\n"
     "F = Fracture or dislocation of bone or tooth\n"
     "B = Body pain >20 days or severe pain\n"
     "H = Hurt endangering life"
    ),
    ("RAPE (BNS Sec.63) — 6 EXCEPTIONS where consent irrelevant",
     "1. Wife <18 yrs (marital rape of minor)\n"
     "2. Fear of death or hurt\n"
     "3. Unsoundness of mind / intoxication\n"
     "4. Below age of consent (18 yrs)\n"
     "5. Consent obtained by fraud / impersonation\n"
     "6. Communicates consent but in a state unable to understand"
    ),
    ("MAGISTRATE INQUEST (BNSS Sec.194) — Mnemonic: 'D-PGA'",
     "D = Dowry death (within 7 yrs)\n"
     "P = Police custody death\n"
     "G = Gang rape victim's death\n"
     "A = Acid attack victim's death"
    ),
    ("DYING DECLARATION (BSA Sec.26) — 'FACE'",
     "F = Fit to make statement (doctor certifies mental fitness)\n"
     "A = Ante mortem (made when death was apprehended)\n"
     "C = Complete (though incomplete may still be accepted)\n"
     "E = Even without oath; thumb impression valid"
    ),
    ("BNSS Sec.329 — Experts who can send report without court appearance",
     "Chemical Examiner / Asst Chemical Examiner\n"
     "Chief Inspector of Explosives\n"
     "Director of Fingerprint Bureau\n"
     "Director / Deputy Director — FSL\n"
     "Serologist to Government\n"
     "+ Any other scientific expert notified by Central/State Govt"
    ),
    ("IPC vs BNS — KEY SECTION PAIRS to remember",
     "IPC 302 (Murder) → BNS 101\n"
     "IPC 304A (Negligence) → BNS 105 / 106\n"
     "IPC 312 (Abortion) → BNS 88\n"
     "IPC 320 (Grievous Hurt) → BNS 116\n"
     "IPC 375 (Rape) → BNS 63\n"
     "IPC 328 (Poison) → BNS 122\n"
     "IPC 87–89 (Consent) → BNS 20–22"
    ),
]

for title, content in mnemonics:
    m_data = [
        [Paragraph(f"<b>{title}</b>", ParagraphStyle("mT", parent=styles["Normal"], fontSize=9.5, textColor=colors.HexColor("#5a2d00"), fontName="Helvetica-Bold"))],
        [Paragraph(content.replace("\n", "<br/>"), ParagraphStyle("mB", parent=styles["Normal"], fontSize=9, textColor=DARK_GRAY, fontName="Courier", leading=13, leftIndent=6))],
    ]
    m_t = Table(m_data, colWidths=[180*mm])
    m_t.setStyle(TableStyle([
        ("BACKGROUND", (0,0), (-1,0), LIGHT_ORANGE),
        ("BACKGROUND", (0,1), (-1,1), colors.HexColor("#fffdf5")),
        ("BOX", (0,0), (-1,-1), 0.7, colors.HexColor("#e08000")),
        ("TOPPADDING", (0,0), (-1,-1), 4),
        ("BOTTOMPADDING", (0,0), (-1,-1), 4),
        ("LEFTPADDING", (0,0), (-1,-1), 7),
        ("RIGHTPADDING", (0,0), (-1,-1), 7),
    ]))
    story.append(m_t)
    story.append(Spacer(1, 2.5*mm))

story.append(Spacer(1, 3*mm))

# ─────────────────────────────────────────────────────────────────────────────
# SECTION 6: IMPORTANT NUMBERS / PENALTIES AT A GLANCE
# ─────────────────────────────────────────────────────────────────────────────
story.append(section_banner("SECTION 6: Important Numbers & Punishments at a Glance", color=colors.HexColor("#1a3c5a")))
story.append(Spacer(1, 3*mm))

num_data = [
    [Paragraph("<b>Offence</b>", table_header_style), Paragraph("<b>BNS Sec.</b>", table_header_style), Paragraph("<b>Punishment</b>", table_header_style)],
    ["Culpable Homicide not amounting to Murder", "101", "Life / 10 yrs + fine"],
    ["Murder", "101", "Death / Life + fine"],
    ["Negligent Death (Medical Negligence)", "105", "2 yrs / fine / both"],
    ["Dowry Death", "106", "7 yrs → Life"],
    ["Rape (basic)", "64", "Min 10 yrs → Life + fine"],
    ["Gang Rape", "70", "≥20 yrs → Life"],
    ["Aggravated Rape (custody/repeat)", "65", "Min 20 yrs → Life / Death"],
    ["Acid Attack", "124", "Min 10 yrs → Life + fine (special)"],
    ["Attempt to throw Acid", "125", "2–7 yrs + fine"],
    ["Causing Miscarriage", "88", "3 yrs / fine (7 yrs if quick with child)"],
    ["Causing Hurt by Poison", "122", "10 yrs + fine"],
    ["Grievous Hurt by Negligence", "131", "2 yrs / fine / both"],
    ["Outraging Modesty of Woman", "74", "1–5 yrs + fine"],
    ["False Evidence (Certificate)", "227", "7 yrs + fine"],
    ["False Certificate by Public Servant", "174B", "1 yr / fine / both"],
    ["Exposure/Abandonment of child <12 yrs", "93", "7 yrs / fine / both"],
    ["Unnatural Offences", "94", "Life / 10 yrs + fine"],
]
num_t_data = [num_data[0]]
for row in num_data[1:]:
    num_t_data.append([
        Paragraph(row[0], table_cell_style),
        Paragraph(f"<b>{row[1]}</b>", table_cell_center),
        Paragraph(row[2], table_cell_style),
    ])
num_t = Table(num_t_data, colWidths=[90*mm, 22*mm, 68*mm], repeatRows=1)
num_t.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,0), colors.HexColor("#1a3c5a")),
    ("TEXTCOLOR", (0,0), (-1,0), WHITE),
    ("ALIGN", (1,0), (1,-1), "CENTER"),
    ("VALIGN", (0,0), (-1,-1), "TOP"),
    ("TOPPADDING", (0,0), (-1,-1), 3),
    ("BOTTOMPADDING", (0,0), (-1,-1), 3),
    ("LEFTPADDING", (0,0), (-1,-1), 5),
    ("RIGHTPADDING", (0,0), (-1,-1), 5),
    ("ROWBACKGROUNDS", (0,1), (-1,-1), [WHITE, LIGHT_BLUE]),
    ("GRID", (0,0), (-1,-1), 0.3, colors.HexColor("#aaaaaa")),
    ("LINEBELOW", (0,0), (-1,0), 1.5, GOLD),
]))
story.append(num_t)
story.append(Spacer(1, 5*mm))

# ─────────────────────────────────────────────────────────────────────────────
# FOOTER NOTE
# ─────────────────────────────────────────────────────────────────────────────
footer_data = [[Paragraph(
    "<b>Note:</b> BNS (Bharatiya Nyaya Sanhita), BNSS (Bharatiya Nagarik Suraksha Sanhita) and BSA (Bharatiya Sakshya Adhiniyam) came into force on <b>1st July 2024</b>, "
    "replacing IPC 1860, CrPC 1973, and IEA 1872 respectively. Always check the latest notifications as sections may be amended. "
    "Compiled for FMT revision as per PC Ignatius textbook framework.",
    note_style
)]]
footer_t = Table(footer_data, colWidths=[180*mm])
footer_t.setStyle(TableStyle([
    ("BACKGROUND", (0,0), (-1,-1), LIGHT_YELLOW),
    ("BOX", (0,0), (-1,-1), 0.7, GOLD),
    ("TOPPADDING", (0,0), (-1,-1), 5),
    ("BOTTOMPADDING", (0,0), (-1,-1), 5),
    ("LEFTPADDING", (0,0), (-1,-1), 8),
    ("RIGHTPADDING", (0,0), (-1,-1), 8),
]))
story.append(footer_t)

# ─────────────────────────────────────────────────────────────────────────────
# BUILD
# ─────────────────────────────────────────────────────────────────────────────
doc.build(story)
print(f"PDF saved to: {doc_path}")

from reportlab.lib.pagesizes import A4
from reportlab.lib import colors
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.lib.units import mm
from reportlab.platypus import (
    SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, HRFlowable
)
from reportlab.lib.enums import TA_CENTER, TA_LEFT, TA_JUSTIFY

doc_path = "/tmp/workspace/fmt-chelating-notes/Chelating_Agents_FMT_Notes.pdf"

doc = SimpleDocTemplate(
    doc_path,
    pagesize=A4,
    rightMargin=14*mm,
    leftMargin=14*mm,
    topMargin=16*mm,
    bottomMargin=16*mm
)

styles = getSampleStyleSheet()

# Colours
NAVY    = colors.HexColor("#1a2e5a")
TEAL    = colors.HexColor("#0e6b7a")
GOLD    = colors.HexColor("#c8860a")
MAROON  = colors.HexColor("#8b1a1a")
PURPLE  = colors.HexColor("#5c1f7a")
DKGREEN = colors.HexColor("#145a32")
ORANGE  = colors.HexColor("#b35900")
LGRAY   = colors.HexColor("#f5f5f5")
WHITE   = colors.white
DKGRAY  = colors.HexColor("#2d2d2d")

LT_BLUE   = colors.HexColor("#dbeeff")
LT_GREEN  = colors.HexColor("#e6f7f0")
LT_YELLOW = colors.HexColor("#fff8e1")
LT_PINK   = colors.HexColor("#fce4ec")
LT_PURPLE = colors.HexColor("#f3e5f5")
LT_ORANGE = colors.HexColor("#fff3e0")
LT_TEAL   = colors.HexColor("#e0f7fa")

def st(name, base="Normal", **kw):
    s = ParagraphStyle(name, parent=styles[base])
    for k, v in kw.items():
        setattr(s, k, v)
    return s

TITLE_S  = st("TitleS", fontSize=21, textColor=WHITE, alignment=TA_CENTER, fontName="Helvetica-Bold")
SUB_S    = st("SubS",   fontSize=10, textColor=colors.HexColor("#c8e6ff"), alignment=TA_CENTER, fontName="Helvetica")
SEC_S    = st("SecS",   fontSize=13, textColor=WHITE, fontName="Helvetica-Bold", leftIndent=4)
DRUG_S   = st("DrugS",  fontSize=12, textColor=WHITE, fontName="Helvetica-Bold", alignment=TA_CENTER)
BODY_S   = st("BodyS",  fontSize=9.5, textColor=DKGRAY, fontName="Helvetica", alignment=TA_JUSTIFY, leading=13)
BOLD_S   = st("BoldS",  fontSize=9.5, textColor=NAVY, fontName="Helvetica-Bold", leading=13)
NOTE_S   = st("NoteS",  fontSize=8.5, textColor=colors.HexColor("#555555"), fontName="Helvetica-Oblique", leading=12)
TH_S     = st("ThS",    fontSize=9,   textColor=WHITE, fontName="Helvetica-Bold", alignment=TA_CENTER)
TC_S     = st("TcS",    fontSize=8.8, textColor=DKGRAY, fontName="Helvetica", leading=12)
TC_C     = st("TcC",    fontSize=8.8, textColor=DKGRAY, fontName="Helvetica", alignment=TA_CENTER, leading=12)
MNEM_T   = st("MnT",    fontSize=10,  textColor=colors.HexColor("#5a2d00"), fontName="Helvetica-Bold")
MNEM_B   = st("MnB",    fontSize=9.2, textColor=DKGRAY, fontName="Courier", leading=14, leftIndent=6)
HL_S     = st("HlS",    fontSize=9,   textColor=MAROON, fontName="Helvetica-Bold", leftIndent=4)

def banner(text, color=NAVY):
    t = Table([[Paragraph(text, SEC_S)]], colWidths=[182*mm])
    t.setStyle(TableStyle([
        ("BACKGROUND", (0,0), (-1,-1), color),
        ("TOPPADDING",    (0,0), (-1,-1), 5),
        ("BOTTOMPADDING", (0,0), (-1,-1), 5),
        ("LEFTPADDING",   (0,0), (-1,-1), 8),
        ("RIGHTPADDING",  (0,0), (-1,-1), 8),
    ]))
    return t

def drug_banner(name, alias, color=TEAL):
    rows = [
        [Paragraph(name, DRUG_S)],
        [Paragraph(alias, st("AlS", fontSize=9, textColor=colors.HexColor("#c8e6ff"), fontName="Helvetica-Oblique", alignment=TA_CENTER))],
    ]
    t = Table(rows, colWidths=[182*mm])
    t.setStyle(TableStyle([
        ("BACKGROUND",    (0,0), (-1,-1), color),
        ("TOPPADDING",    (0,0), (0,0),   5),
        ("BOTTOMPADDING", (0,-1), (-1,-1), 5),
        ("TOPPADDING",    (0,1), (-1,1),   2),
        ("LEFTPADDING",   (0,0), (-1,-1), 8),
        ("RIGHTPADDING",  (0,0), (-1,-1), 8),
    ]))
    return t

def info_table(rows_data, bg_col=LT_BLUE, border_col=TEAL):
    data = []
    for label, val in rows_data:
        data.append([
            Paragraph(f"<b>{label}</b>", TC_S),
            Paragraph(val, TC_S),
        ])
    t = Table(data, colWidths=[42*mm, 140*mm])
    t.setStyle(TableStyle([
        ("BACKGROUND",    (0,0), (0,-1), bg_col),
        ("BACKGROUND",    (1,0), (1,-1), WHITE),
        ("VALIGN",        (0,0), (-1,-1), "TOP"),
        ("TOPPADDING",    (0,0), (-1,-1), 3),
        ("BOTTOMPADDING", (0,0), (-1,-1), 3),
        ("LEFTPADDING",   (0,0), (-1,-1), 5),
        ("RIGHTPADDING",  (0,0), (-1,-1), 5),
        ("BOX",           (0,0), (-1,-1), 0.7, border_col),
        ("INNERGRID",     (0,0), (-1,-1), 0.3, colors.HexColor("#cccccc")),
    ]))
    return t

def mnemonic_box(title, lines):
    data = [
        [Paragraph(title, MNEM_T)],
        [Paragraph("<br/>".join(lines), MNEM_B)],
    ]
    t = Table(data, colWidths=[182*mm])
    t.setStyle(TableStyle([
        ("BACKGROUND",    (0,0), (-1,0), LT_ORANGE),
        ("BACKGROUND",    (0,1), (-1,1), colors.HexColor("#fffdf5")),
        ("BOX",           (0,0), (-1,-1), 0.8, ORANGE),
        ("TOPPADDING",    (0,0), (-1,-1), 4),
        ("BOTTOMPADDING", (0,0), (-1,-1), 4),
        ("LEFTPADDING",   (0,0), (-1,-1), 7),
        ("RIGHTPADDING",  (0,0), (-1,-1), 7),
    ]))
    return t

def warn_box(text, bg=LT_PINK, border=MAROON):
    t = Table([[Paragraph(text, st("WS", fontSize=9, textColor=MAROON, fontName="Helvetica-Bold", leading=13))]], colWidths=[182*mm])
    t.setStyle(TableStyle([
        ("BACKGROUND",    (0,0), (-1,-1), bg),
        ("BOX",           (0,0), (-1,-1), 1, border),
        ("TOPPADDING",    (0,0), (-1,-1), 5),
        ("BOTTOMPADDING", (0,0), (-1,-1), 5),
        ("LEFTPADDING",   (0,0), (-1,-1), 8),
        ("RIGHTPADDING",  (0,0), (-1,-1), 8),
    ]))
    return t

def sp(n=3): return Spacer(1, n*mm)

story = []

# ── TITLE ────────────────────────────────────────────────────────────────────
title_rows = [
    [Paragraph("CHELATING AGENTS", TITLE_S)],
    [Paragraph("Forensic Medicine & Toxicology | Revision Notes", SUB_S)],
    [Paragraph("Based on PC Ignatius / PC Dikshit Framework", st("SubS2", fontSize=9, textColor=colors.HexColor("#90caf9"), alignment=TA_CENTER, fontName="Helvetica-Oblique"))],
]
title_t = Table(title_rows, colWidths=[182*mm])
title_t.setStyle(TableStyle([
    ("BACKGROUND",    (0,0), (-1,-1), NAVY),
    ("TOPPADDING",    (0,0), (-1,0),  10),
    ("BOTTOMPADDING", (0,-1), (-1,-1), 10),
    ("LEFTPADDING",   (0,0), (-1,-1), 8),
    ("RIGHTPADDING",  (0,0), (-1,-1), 8),
]))
story.append(title_t)
story.append(sp(4))

# ── DEFINITION BOX ───────────────────────────────────────────────────────────
defn = Table([[Paragraph(
    "<b>Definition:</b> Chelating agents are compounds that form stable, soluble, non-toxic ring structures (chelates) "
    "with metallic ions, rendering them water-soluble and non-ionized so they are excreted in urine without damaging "
    "the liver or kidneys. The word 'Chelate' comes from the Greek <i>chele</i> = claw (the metal is 'gripped').",
    BODY_S)]], colWidths=[182*mm])
defn.setStyle(TableStyle([
    ("BACKGROUND",    (0,0), (-1,-1), LT_YELLOW),
    ("BOX",           (0,0), (-1,-1), 1, GOLD),
    ("TOPPADDING",    (0,0), (-1,-1), 5),
    ("BOTTOMPADDING", (0,0), (-1,-1), 5),
    ("LEFTPADDING",   (0,0), (-1,-1), 8),
    ("RIGHTPADDING",  (0,0), (-1,-1), 8),
]))
story.append(defn)
story.append(sp(4))

# ── MASTER TABLE ─────────────────────────────────────────────────────────────
story.append(banner("MASTER QUICK-REFERENCE TABLE — All Chelating Agents at a Glance", NAVY))
story.append(sp(2))

master_hdr = [
    Paragraph("Agent", TH_S),
    Paragraph("Drug / Full Name", TH_S),
    Paragraph("Metals Chelated", TH_S),
    Paragraph("Route", TH_S),
    Paragraph("Key Use / Unique Fact", TH_S),
    Paragraph("Contraindicated In", TH_S),
]
master_rows = [
    ["BAL\n(Dimercaprol)", "British Anti-Lewisite\nDimercaptopropanol", "As, Hg, Pb, Sb, Au, Tl\n(+ Cu, Bi)", "IM only\n(deep, in oil)", "Drug of choice: Arsenic & Mercury\nChloice in impaired renal function\n2 mol BAL : 1 atom metal", "Cadmium (nephrotoxic complex)\nLiver disease"],
    ["CaNa₂EDTA\n(Calcium Disodium Versenate)", "Ethylene Diamine\nTetra-acetic Acid", "Pb (best), Zn, Mn,\nCu, Ni, Cd, Fe", "IV / IM\n(NOT oral)", "Best for inorganic lead\nNOT effective in tetraethyl lead\nGive BAL 4 hrs BEFORE EDTA", "Raised intracranial pressure\n(fluids restricted)"],
    ["Penicillamine\n(Cuprimine / D-Pen)", "β,β-Dimethylcysteine\n(hydrolysis product of penicillin)", "Cu (main), Pb, Hg,\nZn, Fe", "Oral\n(unique advantage)", "Drug of choice: Wilson's disease, Cystinuria\nOnly agent given orally for long term\nGive Pyridoxine 25–50 mg/day with it", "Penicillin allergy\nPregnancy (teratogenic)"],
    ["Deferoxamine\n(Desferrioxamine)", "Deferoxamine mesylate\nDesferal", "Fe³⁺ (ferric ion only)\nAluminium", "Oral / IM / IV\n(all routes)", "Drug of choice: Acute iron poisoning & Haemochromatosis\nDoes NOT chelate Fe from Hb or cytochromes\nUrine turns 'vin rosé' (pink-orange) = positive test", "Not for primary haemochromatosis treatment alone"],
    ["DMSA\n(Succimer)", "Dimercaptosuccinic acid\n2,3-DMSA", "Pb (children), As,\nHg, Cd", "Oral\n(water soluble BAL analogue)", "Drug of choice: Pb poisoning in children\nWater-soluble; less toxic than BAL\nCan cross blood–brain barrier (minor)", "—"],
    ["DMPS", "2,3-Dimercaptopropane-\n1-sulphonate", "Hg (organic + inorganic),\nAs, Pb", "IV / Oral", "Used in mercury poisoning (esp. organic)\nMore water-soluble than BAL", "—"],
    ["Prussian Blue\n(Ferric hexacyanoferrate)", "Ferric ferrocyanide", "Thallium (Tl)\nRadiocesium (¹³⁷Cs)", "Oral", "Ion exchange in gut; prevents reabsorption\nFDA approved for Tl & radiocesium\nBlue stool expected", "—"],
    ["Deferiprone\n(L1)", "1,2-Dimethyl-3-\nhydroxypyrid-4-one", "Fe³⁺ (oral iron chelator)", "Oral", "Used in thalassaemia iron overload\nSecond-line if deferoxamine fails\nSide effect: Agranulocytosis (monitor WBC)", "—"],
    ["Desferasirox\n(Exjade)", "Deferasirox", "Fe³⁺", "Oral\n(once daily)", "Newer oral iron chelator\nUsed in transfusion-related iron overload", "Renal failure (nephrotoxic)"],
    ["Dithiocarb\n(Diethyldithiocarbamate)", "Sodium diethyldithiocarbamate", "Nickel carbonyl (main)", "IV", "Drug of choice: Nickel carbonyl pneumonitis", "—"],
    ["Hydroxocobalamin", "Vitamin B12a", "Cyanide (CN⁻)", "IV", "Drug of choice: Cyanide poisoning\nBinds CN to form cyanocobalamin\nTurns urine red", "—"],
    ["Protamine Sulphate", "Basic protein (from fish sperm)", "Heparin (not a metal)", "IV", "Antidote for heparin overdose\nNot a classical chelator but functionally similar", "—"],
]

master_tdata = [master_hdr]
row_bgs = [WHITE, LT_BLUE]
for i, row in enumerate(master_rows):
    bg = row_bgs[i % 2]
    master_tdata.append([Paragraph(f"<b>{row[0]}</b>", TC_C), Paragraph(row[1], TC_S), Paragraph(f"<b>{row[2]}</b>", TC_S), Paragraph(row[3], TC_C), Paragraph(row[4], TC_S), Paragraph(row[5], TC_S)])

mt = Table(master_tdata, colWidths=[24*mm, 32*mm, 28*mm, 18*mm, 52*mm, 28*mm], repeatRows=1)
mt.setStyle(TableStyle([
    ("BACKGROUND",    (0,0), (-1,0), NAVY),
    ("TEXTCOLOR",     (0,0), (-1,0), WHITE),
    ("VALIGN",        (0,0), (-1,-1), "TOP"),
    ("TOPPADDING",    (0,0), (-1,-1), 3),
    ("BOTTOMPADDING", (0,0), (-1,-1), 3),
    ("LEFTPADDING",   (0,0), (-1,-1), 4),
    ("RIGHTPADDING",  (0,0), (-1,-1), 4),
    ("ROWBACKGROUNDS",(0,1), (-1,-1), [WHITE, LT_BLUE]),
    ("GRID",          (0,0), (-1,-1), 0.3, colors.HexColor("#aaaaaa")),
    ("LINEBELOW",     (0,0), (-1,0),  1.5, GOLD),
]))
story.append(mt)
story.append(sp(5))

# ─── DRUG PROFILES ───────────────────────────────────────────────────────────
story.append(banner("INDIVIDUAL DRUG PROFILES (Exam Detail)", TEAL))
story.append(sp(3))

# ─ BAL ─
story.append(drug_banner("1. BAL — British Anti-Lewisite (Dimercaprol)", "Dimercaptopropanol | 2,3-Dimercapto-1-propanol", color=TEAL))
story.append(sp(2))
story.append(info_table([
    ("Full name",      "British Anti-Lewisite (BAL) | Dimercaptopropanol"),
    ("Mechanism",      "Heavy metal ions combine with sulphydryl (SH) groups of tissue enzymes, blocking them. "
                       "BAL has 2 thiol (-SH) groups that compete with tissue SH groups, grab the metal ion, "
                       "form a stable chelate ring (2 mol BAL : 1 mol metal) → excreted in urine & bile."),
    ("Metals chelated","Arsenic (DOC), Mercury (DOC), Lead, Antimony, Gold, Thallium, Copper, Bismuth"),
    ("Route / Dose",   "Deep IM (ONLY) in arachis/peanut oil with 20% benzyl benzoate; "
                       "Dose: 3–4 mg/kg body weight; 4-hourly × 2 days, then 3× daily × 10 days"),
    ("Preparation",    "Ampoule: 100 mg/mL — 2 mL of 10% compound in arachis oil"),
    ("Side effects",   "Anorexia / Nausea / Vomiting | Excessive salivation, lachrymation | "
                       "Generalised aches & pains | Hyperthermia | Chest constriction | "
                       "Burning eyes & throat | Fall in BP (appear at >3.5 mg/kg)"),
    ("Contraindicated","Cadmium poisoning (forms nephrotoxic BAL-Cd complex) | Hepatic disease | "
                       "Relatively CI in renal disease"),
    ("Special facts",  "Originally developed as antidote for Lewisite (arsenic war gas) | "
                       "Give BAL at least 4 hours BEFORE EDTA in lead poisoning | "
                       "Chelator of CHOICE when renal function is impaired"),
], LT_TEAL, TEAL))
story.append(sp(4))

# ─ EDTA ─
story.append(drug_banner("2. CaNa₂EDTA — Calcium Disodium Versenate", "Ethylene Diamine Tetra-acetic Acid (Calcium Disodium Edetate)", color=DKGREEN))
story.append(sp(2))
story.append(info_table([
    ("Full name",      "Calcium Disodium EDTA (CaNa₂EDTA) | Calcium Disodium Versenate"),
    ("Mechanism",      "Acts as an ion exchanger: Ca²⁺ is exchanged for heavy metal ion (Pb²⁺). "
                       "Lead displaces calcium, forming stable, soluble, non-ionized Pb-EDTA complex → excreted in urine. "
                       "Chelates extracellular lead in soft tissues AND bones. "
                       "Urinary lead excretion increases ×50 above baseline."),
    ("Metals chelated","Lead (BEST — inorganic only), Zinc, Manganese, Copper, Nickel, Cadmium, Iron"),
    ("NOT effective",  "Tetraethyl lead (organic lead) | Less effective for Manganese, Iron, Cd, radioactive elements | "
                       "INFERIOR to BAL for Arsenic & Mercury"),
    ("Route / Dose",   "IV infusion (NOT oral — oral increases GIT lead absorption!) | "
                       "5 mL of 20% solution in 250–500 mL NS or 5% dextrose-saline; "
                       "concentration must NOT exceed 3%; drip >2 hours; "
                       "50–70 mg/kg/day; 1 g IV twice daily × 5 days; repeat after 3-day gap"),
    ("Side effects",   "Thrombophlebitis (strong solution) | Lower nephron nephrosis | "
                       "Hypersensitivity | Fever, headache, malaise | Lachrymation, nasal congestion | "
                       "Sneezing, muscle pain | Hypotension"),
    ("Contraindicated","Raised intracranial pressure (fluids must be restricted)"),
    ("Special facts",  "NEVER give orally (chelates gut lead → increased absorption) | "
                       "Give BAL 4 hrs BEFORE EDTA in lead poisoning | "
                       "Best chelator for inorganic lead poisoning"),
], LT_GREEN, DKGREEN))
story.append(sp(4))

# ─ Penicillamine ─
story.append(drug_banner("3. Penicillamine (Cuprimine / D-Pen)", "β,β-Dimethylcysteine — Hydrolysis Product of Penicillin", color=PURPLE))
story.append(sp(2))
story.append(info_table([
    ("Full name",      "D-Penicillamine | Cuprimine | β,β-Dimethylcysteine"),
    ("Mechanism",      "Contains stable SH (thiol) groups (product of penicillin hydrolysis). "
                       "SH groups chelate heavy metals. Can be given orally and continuously without major toxicity."),
    ("Metals chelated","Copper (PRIMARY — DOC for Wilson's disease), Lead, Mercury, Zinc, Iron"),
    ("Indications",    "Wilson's disease (hepatolenticular degeneration — copper metabolism disorder) | "
                       "Cystinuria | Lead, Cu, Hg, Zn poisoning | Rheumatoid arthritis (DMARDs use)"),
    ("Route / Dose",   "ORAL (unique advantage over BAL, EDTA) | "
                       "0.5 g orally 30 min before meals × 4 times/day × 8–10 days | "
                       "Also IM: 30 mg/kg body weight"),
    ("Side effects",   "Hypersensitivity: skin rashes, nephrotoxicity | "
                       "Optic neuritis (due to pyridoxine deficiency — give Pyridoxine 25–50 mg/day) | "
                       "Leucopenia, Thrombocytopenia, Agranulocytosis"),
    ("Contraindicated","Penicillin allergy | Pregnancy (teratogenic) | Systemic lupus"),
    ("Special facts",  "Only oral chelating agent for LONG-TERM use | "
                       "Always supplement Pyridoxine (Vit B6) 25–50 mg/day | "
                       "DOC for Wilson's disease and Cystinuria | "
                       "Commercial preparation: controlled decomposition of penicillin"),
], LT_PURPLE, PURPLE))
story.append(sp(4))

# ─ Deferoxamine ─
story.append(drug_banner("4. Deferoxamine (Desferrioxamine / Desferal)", "Siderophore — Specific Ferric (Fe³⁺) Chelator", color=MAROON))
story.append(sp(2))
story.append(info_table([
    ("Full name",      "Desferrioxamine mesylate | Deferoxamine | Desferal"),
    ("Mechanism",      "Water-soluble compound with great affinity for ferric ion (Fe³⁺). "
                       "Removes iron from ferritin and hemosiderin. "
                       "Does NOT chelate iron from haemoglobin or cytochromes (selective). "
                       "Forms ferrioxamine complex → excreted in urine."),
    ("Metals chelated","Iron (Fe³⁺) — PRIMARY; also Aluminium"),
    ("Indications",    "DOC: Acute iron poisoning | Haemochromatosis (iron overload) | "
                       "Thalassaemia (iron overload from transfusions — with deferiprone)"),
    ("Route / Dose",   "Oral: 8–10 g in 80–100 mL distilled water | "
                       "IM: 1 g initially → 0.5 g 2–3× daily | "
                       "IV: 1–2 g in 500 mL 5% dextrose saline; NOT more than 15 mg/kg/hr or 80 mg/kg/24 hr"),
    ("Key test",       "Urine turns PINK-ORANGE ('Vin rosé' colour) after deferoxamine → confirms iron poisoning"),
    ("Side effects",   "Hypotension (rapid IV) | Allergic reactions | Neurotoxicity (long-term) | "
                       "Growth retardation in children | Yersinia enterocolitica infection risk"),
    ("Special facts",  "Does NOT remove iron from Hb or cytochromes | "
                       "Vin rosé urine = diagnostic AND therapeutic confirmation | "
                       "Also used in intracerebral haemorrhage research (removes haematoma iron)"),
], LT_PINK, MAROON))
story.append(sp(4))

# ─ DMSA ─
story.append(drug_banner("5. DMSA — Succimer (Dimercaptosuccinic Acid)", "Oral BAL Analogue — Drug of Choice for Paediatric Lead Poisoning", color=ORANGE))
story.append(sp(2))
story.append(info_table([
    ("Full name",      "2,3-Dimercaptosuccinic acid (DMSA) | Succimer | Chemet"),
    ("Mechanism",      "Water-soluble analogue of BAL with 2 thiol (SH) groups. "
                       "Can be given orally (unlike BAL). Less toxic. "
                       "Chelates lead intracellularly and extracellularly."),
    ("Metals chelated","Lead (PRIMARY — children's DOC), Arsenic, Mercury, Cadmium"),
    ("Route / Dose",   "ORAL: 10 mg/kg every 8 hrs × 5 days, then every 12 hrs × 14 days"),
    ("Side effects",   "GI upset | Skin rash | Transaminase elevation | Sulphurous odour (from thiol groups)"),
    ("Special facts",  "DOC for lead poisoning in CHILDREN | "
                       "More water-soluble and less toxic than BAL | "
                       "Can penetrate CNS (minor) | "
                       "First oral chelator approved for paediatric lead poisoning (FDA)"),
], LT_ORANGE, ORANGE))
story.append(sp(5))

# ── MNEMONICS ────────────────────────────────────────────────────────────────
story.append(banner("MNEMONICS & MEMORY AIDS", color=colors.HexColor("#b35900")))
story.append(sp(3))

mnemonics = [
    (
        "🔑 METALS CHELATED BY BAL — Mnemonic: 'A MAGIC Compound'",
        [
            "A  = Arsenic (DOC)",
            "M  = Mercury (DOC)",
            "A  = Antimony",
            "G  = Gold",
            "I  = [lead] Intracellular chelation",
            "C  = Copper / Cobalt / Cadmium (CI — nephrotoxic!)",
            "   → Also: Thallium, Bismuth",
        ]
    ),
    (
        "🔑 DOC (Drug of Choice) for each metal — Mnemonic: 'BAIL PEDF'",
        [
            "B  = BAL        → Arsenic, Mercury (also Lead in renal impairment)",
            "A  = —",
            "I  = —",
            "L  = Lead       → CaNa₂EDTA (inorganic Pb); DMSA (children)",
            "   ─────────────────────────────────────",
            "P  = Penicillamine → Copper (Wilson's disease), Cystinuria",
            "E  = EDTA       → Inorganic Lead (adults)",
            "D  = Deferoxamine → Iron",
            "F  = DMSA (Fine for children) → Paediatric Lead",
        ]
    ),
    (
        "🔑 PENICILLAMINE side effects — Mnemonic: 'HOL-P'",
        [
            "H  = Hypersensitivity (rash, nephropathy)",
            "O  = Optic neuritis (pyridoxine deficiency → give Vit B6!)",
            "L  = Leucopenia / thrombocytopenia / agranulocytosis",
            "P  = Pyridoxine deficiency (always supplement B6 25–50 mg/day)",
        ]
    ),
    (
        "🔑 DEFEROXAMINE — Key facts to remember: 'VIN ROSE'",
        [
            "V  = Vin rosé urine (pink-orange) = positive test for iron poisoning",
            "I  = Iron (Fe³⁺) only — ferric iron",
            "N  = NOT Hb, NOT cytochromes (spared)",
            "R  = Removes iron from ferritin, hemosiderin",
            "O  = Oral / IM / IV (all routes)",
            "S  = Selective ferric ion chelator",
            "E  = Emergency use in acute iron poisoning",
        ]
    ),
    (
        "🔑 BAL CONTRAINDICATIONS — Mnemonic: 'BAL CAN'T do Cadmium'",
        [
            "Cadmium  → BAL + Cd = nephrotoxic complex (ABSOLUTELY CI)",
            "Hepatic disease → absolutely contraindicated",
            "Kidney disease  → relatively contraindicated",
            "Also: BAL must be given 4 hrs BEFORE EDTA in lead poisoning",
        ]
    ),
    (
        "🔑 EDTA — 'Never give EDTA by mouth' (Oral EDTA increases Pb absorption from GIT!)",
        [
            "E  = Exchange — Ca for Pb (ion exchanger mechanism)",
            "D  = Drip (IV, slow, >2 hrs; concentration <3%)",
            "T  = Twice daily × 5 days, then 3-day gap, repeat",
            "A  = Always give BAL 4 hrs BEFORE EDTA",
            "EXTRA: Urinary Pb excretion ×50 above baseline after EDTA",
        ]
    ),
    (
        "🔑 COMPARISON TABLE: BAL vs EDTA vs Penicillamine — Quick Recall",
        [
            "Feature         | BAL            | EDTA            | Penicillamine",
            "─────────────────────────────────────────────────────────────────────",
            "Route           | IM only         | IV / IM         | ORAL (only oral)",
            "Metal (DOC)     | As, Hg          | Pb (inorganic)  | Cu (Wilson's)",
            "Mechanism       | Thiol (SH) grp  | Ion exchange    | Thiol (SH) grp",
            "CI              | Cadmium, Liver  | Raised ICP      | PCN allergy, Preg",
            "Give with       | Nothing special | BAL 4 hr before | Pyridoxine (B6)",
            "Solvent         | Arachis oil     | Saline/Dextrose | —",
        ]
    ),
    (
        "🔑 Urine Colour Clues in Chelation Therapy",
        [
            "Pink-Orange (Vin rosé) → Deferoxamine given for iron poisoning",
            "Blue stool              → Prussian Blue given for Thallium / Radiocesium",
            "Red urine               → Hydroxocobalamin given for Cyanide poisoning",
        ]
    ),
]

for title, lines in mnemonics:
    story.append(mnemonic_box(title, lines))
    story.append(sp(2.5))

story.append(sp(3))

# ── HIGH-YIELD EXAM POINTS ────────────────────────────────────────────────────
story.append(banner("HIGH-YIELD EXAM POINTS (Must Know)", MAROON))
story.append(sp(2))

exam_data = [
    [Paragraph("<b>Question / Scenario</b>", TH_S), Paragraph("<b>Answer</b>", TH_S)],
    [Paragraph("DOC for arsenic poisoning", TC_S), Paragraph("<b>BAL (Dimercaprol)</b>", TC_S)],
    [Paragraph("DOC for mercury poisoning", TC_S), Paragraph("<b>BAL</b> (DMPS for organic mercury)", TC_S)],
    [Paragraph("DOC for inorganic lead in adults", TC_S), Paragraph("<b>CaNa₂EDTA</b> (give BAL 4 hrs before)", TC_S)],
    [Paragraph("DOC for lead poisoning in children", TC_S), Paragraph("<b>DMSA (Succimer)</b> — oral", TC_S)],
    [Paragraph("DOC for copper poisoning / Wilson's disease", TC_S), Paragraph("<b>Penicillamine</b> (oral)", TC_S)],
    [Paragraph("DOC for acute iron poisoning", TC_S), Paragraph("<b>Deferoxamine</b> (Desferrioxamine)", TC_S)],
    [Paragraph("DOC for thallium poisoning", TC_S), Paragraph("<b>Prussian Blue</b> (Ferric hexacyanoferrate)", TC_S)],
    [Paragraph("DOC for nickel carbonyl poisoning", TC_S), Paragraph("<b>Dithiocarb (Diethyldithiocarbamate)</b>", TC_S)],
    [Paragraph("DOC for cyanide poisoning", TC_S), Paragraph("<b>Hydroxocobalamin</b> (IV) ± Sodium thiosulphate", TC_S)],
    [Paragraph("Only chelator given ORALLY long-term", TC_S), Paragraph("<b>Penicillamine</b>", TC_S)],
    [Paragraph("BAL absolutely contraindicated in which metal?", TC_S), Paragraph("<b>Cadmium</b> (forms nephrotoxic complex)", TC_S)],
    [Paragraph("Why NOT give EDTA orally?", TC_S), Paragraph("Chelates gut lead → <b>INCREASES absorption</b> from GIT", TC_S)],
    [Paragraph("Order of giving BAL + EDTA in lead poisoning", TC_S), Paragraph("<b>BAL first (4 hrs before EDTA)</b> — BAL mobilizes intracellular Pb, then EDTA mops up", TC_S)],
    [Paragraph("Vin rosé (pink-orange) urine after chelation", TC_S), Paragraph("<b>Deferoxamine</b> — confirms iron poisoning / therapy working", TC_S)],
    [Paragraph("Vitamin to give with Penicillamine", TC_S), Paragraph("<b>Pyridoxine (Vit B6)</b> 25–50 mg/day", TC_S)],
    [Paragraph("Penicillamine source / origin", TC_S), Paragraph("<b>Hydrolysis of Penicillin</b> (controlled decomposition)", TC_S)],
    [Paragraph("EDTA mechanism in brief", TC_S), Paragraph("Ion exchange: Ca²⁺ displaced by Pb²⁺ → Pb-EDTA complex excreted in urine; urinary Pb ×50 baseline", TC_S)],
    [Paragraph("Which chelator works in impaired renal function?", TC_S), Paragraph("<b>BAL</b> — excreted via bile (not dependent on renal excretion)", TC_S)],
    [Paragraph("Deferoxamine does NOT chelate iron from?", TC_S), Paragraph("<b>Haemoglobin and Cytochromes</b>", TC_S)],
]

exam_t = Table(exam_data, colWidths=[82*mm, 100*mm], repeatRows=1)
exam_t.setStyle(TableStyle([
    ("BACKGROUND",    (0,0), (-1,0), MAROON),
    ("TEXTCOLOR",     (0,0), (-1,0), WHITE),
    ("VALIGN",        (0,0), (-1,-1), "TOP"),
    ("TOPPADDING",    (0,0), (-1,-1), 3),
    ("BOTTOMPADDING", (0,0), (-1,-1), 3),
    ("LEFTPADDING",   (0,0), (-1,-1), 5),
    ("RIGHTPADDING",  (0,0), (-1,-1), 5),
    ("ROWBACKGROUNDS",(0,1), (-1,-1), [WHITE, LT_PINK]),
    ("GRID",          (0,0), (-1,-1), 0.3, colors.HexColor("#aaaaaa")),
    ("LINEBELOW",     (0,0), (-1,0),  1.5, GOLD),
]))
story.append(exam_t)
story.append(sp(4))

# ── FOOTER ────────────────────────────────────────────────────────────────────
foot = Table([[Paragraph(
    "<b>Sources:</b> PC Dikshit Textbook of Forensic Medicine & Toxicology | "
    "Katzung's Basic & Clinical Pharmacology 16e | Compiled for FMT exam revision. "
    "All dose information is for academic reference — always verify with current clinical guidelines.",
    NOTE_S)]], colWidths=[182*mm])
foot.setStyle(TableStyle([
    ("BACKGROUND",    (0,0), (-1,-1), LT_YELLOW),
    ("BOX",           (0,0), (-1,-1), 0.7, GOLD),
    ("TOPPADDING",    (0,0), (-1,-1), 5),
    ("BOTTOMPADDING", (0,0), (-1,-1), 5),
    ("LEFTPADDING",   (0,0), (-1,-1), 8),
    ("RIGHTPADDING",  (0,0), (-1,-1), 8),
]))
story.append(foot)

doc.build(story)
print(f"PDF created: {doc_path}")