const PURPOSES = [
  { id: "research",   title: "Health Research",        blurb: "Scientific knowledge.", refs: [] },
  { id: "quality",    title: "Quality Improvement",    blurb: "Improve your own service.", refs: [] },
  { id: "statistics", title: "Statistics / Official",  blurb: "Org/regional/national stats.", refs: [] },
  { id: "innovation", title: "Innovation / AI",        blurb: "Tool/algorithm/model.", refs: [] },
  { id: "anon",       title: "Exclusively Anonymized Data", blurb: "No reasonable reidentification risk.", refs: [] },
];

const STEPS = [
  {
    num: 1,
    key: "classification",
    title: "Project classification",
    items: [
      {
        k: "1a",
        label:
          "Record purpose, controller(s)/processor(s) roles and identifiability.",
        req: true,
        refs: [
          { title: "HRA §2 (scope)", url: "https://lovdata.no/lov/2008-06-20-44/%C2%A72" },
          { title: "HRA §4 (definitions)", url: "https://lovdata.no/lov/2008-06-20-44/%C2%A74" },
          { title: "GDPR Art. 4; Art. 4(7)", url: "https://gdpr-info.eu/art-4-gdpr/" }
        ],
      },
      {
        k: "1b",
        label:
          "Identify data status: personal / special category (health/genetic/biometric) / anonymized. Pseudonymized data remains personal; genetics falls under biotechnology.",
        req: true,
        refs: [
          { title: "GDPR Art. 9(1) (special)", url: "https://gdpr-info.eu/art-9-gdpr/" },
          { title: "GDPR Recital 26 (anonymized)", url: "https://gdpr-info.eu/recitals/no-26/" },
          { title: "GDPR Art. 4(5) (pseudonymized)", url: "https://gdpr-info.eu/art-4-gdpr/" }
        ],
      },
      {
        k: "1c",
        label:
          "If medical/health research: HRA applies and REK decides scope (before access).",
        req: true,
        showFor: ["research"],
        refs: [
          { title: "HRA §2; §4; REK scope", url: "https://lovdata.no/lov/2008-06-20-44" }
        ],
      },
      {
        k: "1d",
        label:
          "If using health registers: record registry restrictions.",
        req: false,
        showFor: ["statistics", "research", "quality", "innovation"],
        refs: [
          { title: "HRL §§8–11 (registers)", url: "https://lovdata.no/dokument/NL/lov/2014-06-20-43" }
        ],
      },
      {
        k: "1e",
        label:
          "Consult health trusts data protection officer, retain written rationale.",
        req: true,
        showFor: ["research", "quality", "statistics", "innovation"],
        refs: [
          { title: "GDPR Art. 5(2) (accountability)", url: "https://gdpr-info.eu/art-5-gdpr/" },
          { title: "GDPR Art. 24(1) (responsibility)", url: "https://gdpr-info.eu/art-24-gdpr/" }
        ],
      },
      {
        k: "1f",
        label:
          "Plan periodic re-review as tech/law evolve (accountability).",
        req: false,
        refs: [{ title: "GDPR Art. 5(2)", url: "https://gdpr-info.eu/art-5-gdpr/" }],
      },
    ],
  },

  {
    num: 2,
    key: "legal",
    title: "Legal basis & consent",
    items: [
      {
        k: "2a",
        label:
          "Select legal route ;public interest/official authority ; research/statistics with safeguards; healthcare/management/quality improvment",
        req: true,
        refs: [
          { title: "GDPR Art. 6(1)(e)", url: "https://gdpr-info.eu/art-6-gdpr/" },
          { title: "GDPR Art. 9(2)(h)/(j)", url: "https://gdpr-info.eu/art-9-gdpr/" },
          { title: "GDPR Art. 89(1)", url: "https://gdpr-info.eu/art-89-gdpr/" }
        ],
      },
      {
        k: "2b",
        label:
          "Data protection impact assessment for high-risk projects; document rationale if not.",
        req: true,
        refs: [{ title: "GDPR Art. 35 (DPIA)", url: "https://gdpr-info.eu/art-35-gdpr/" }],
      },
      {
        k: "2c",
        label:
          "Health-law confidentiality satisfied via valid consent or dispensation (archival/research/statistics in public interest).",
        req: true,
        refs: [
          { title: "HPA §21 (confidentiality)", url: "https://lovdata.no/lov/1999-07-02-64/%C2%A721" },
          { title: "HPA §29; HRL §19e (dispensation)", url: "https://lovdata.no/dokument/NL/lov/2014-06-20-43" }
        ],
      },
      {
        k: "2d",
        label:
          "If using consent: GDPR-valid; information duties; withdrawal covered (re-consent if needed).",
        req: false,
        refs: [
          { title: "GDPR Art. 7 (consent)", url: "https://gdpr-info.eu/art-7-gdpr/" },
          { title: "GDPR Arts. 13–14 (information)", url: "https://gdpr-info.eu/art-13-gdpr/" },
          { title: "HRA §13 (consent, if HRA)", url: "https://lovdata.no/lov/2008-06-20-44/%C2%A713" }
        ],
      },
    ],
  },

  {
    num: 3,
    key: "ethics",
    title: "Ethics & regulatory approvals",
    items: [
      {
        k: "3a",
        label: "Regional committees for medical and health research ethics (REK) approval or exemption before research access/use.",
        req: true,
        showFor: ["research"],
        refs: [
          { title: "HRA §9; §33", url: "https://lovdata.no/lov/2008-06-20-44" }
        ],
      },
      {
        k: "3b",
        label:
          "Take into account ethics/regulators (REK), DPA (Datatilsynet), registry/data holders (e.g., linkage constraints).",
        req: true,
        refs: [
          { title: "Datatilsynet — rules/tools", url: "https://www.datatilsynet.no/regelverk-og-verktoy/lover-og-regler/" }
        ],
      },
      {
        k: "3c",
        label: "RoPA & transparency notices ready.",
        req: true,
        refs: [
          { title: "GDPR Art. 30 (RoPA)", url: "https://gdpr-info.eu/art-30-gdpr/" },
          { title: "GDPR Arts. 13–14 (transparency)", url: "https://gdpr-info.eu/art-13-gdpr/" }
        ],
      },
      {
        k: "3d",
        label: "Include AI details in materials where applicable; plan obligations.",
        req: true,
        showFor: ["innovation"],
        refs: [{ title: "AI Act Arts. 9–15", url: "https://ai-act-law.eu/article/9/" }],
      },
    ],
  },

  {
    num: 4,
    key: "access",
    title: "Data access & agreements",
    items: [
      {
        k: "4a",
        label:
          "Obtain data user or data sharing agreement (DUA/DSA or equivalent) with data provider: scope, purpose, duration, security, confidentiality, post-hoc control, return/destruction.",
        req: true,
        refs: [
        { title: "HPA §21 (confidentiality)", url: "https://lovdata.no/lov/1999-07-02-64/%C2%A721" },
        { title: "HPA §29; HRL §19e (dispensation)", url: "https://lovdata.no/dokument/NL/lov/2014-06-20-43" },
        { title: "GDPR 28(3)-processor contract)", url: "https://gdpr-info.eu/art-28-gdpr/" },
        { title: "GDPR 26- joint controllers", url: "https://gdpr-info.eu/art-26-gdpr/" }
        ],
      },
      {
        k: "4b",
        label:
          "Security controls for controller/processor incl. access control & logging.",
        req: true,
        refs: [
          { title: "GDPR Art. 32 (security)", url: "https://gdpr-info.eu/art-32-gdpr/" },
          { title: "PRA §22; PRR §14 (logging)", url: "https://lovdata.no/forskrift/2019-03-01-168/%C2%A714" },
          { title: "Normen §5.2; §5.4.4", url: "https://www.helsedirektoratet.no/english/the-code-of-conduct-for-information-security-and-data-protection" }
        ],
      },
      {
        k: "4c",
        label:
          "Team confidentiality/training completed (duty of confidentiality).",
        req: true,
        refs: [
          { title: "HPA §21", url: "https://lovdata.no/lov/1999-07-02-64/%C2%A721" }
        ],
      },
      {
        k: "4d",
        label:
          "Use Secure Processing or Secure Analysis Environment(SPE/SAE) (e.g., TSD/HUNT Cloud/SAFE). Transfers via secure channels (logging, access control, encryption).",
        req: true,
        refs: [
          { title: "GDPR Art. 32", url: "https://gdpr-info.eu/art-32-gdpr/" },
          { title: "Normen (logging/encryption)", url: "https://www.helsedirektoratet.no/normen/logging-og-innsyn-i-logg-faktaark-15" }
        ],
      },
       {
        k: "4e",
        label:
          "Data comes from an external source, obtain data access agreements, processor/joint controller contracts, DSA/DUA signed",
        req: false,
        refs: [
            { title: "HRL §19e; HPA §29", url: "https://lovdata.no/dokument/NL/lov/2014-06-20-43" },
            { title: "GDPR Art. 28(3)", url: "https://gdpr-info.eu/art-28-gdpr/" },
            { title: "GDPR Art. 26", url: "https://gdpr-info.eu/art-26-gdpr/" }
          ],
      },
      // {
      //   k: "4e",
      //   label:
      //     "Data comes from an external source (outside institutions: registries/health trusts).",
      //   req: false,
      //   children: [
      //     {
      //       k: "4e-1",
      //       label:
      //         "Obtain data access agreements; dispensation where applicable.",
      //       req: false,
      //       refs: [
      //         { title: "HRL §19e; HPA §29", url: "https://lovdata.no/dokument/NL/lov/2014-06-20-43" }
      //       ],
      //     },
      //     {
      //       k: "4e-2",
      //       label:
      //         "Processor/joint controller contracts (GDPR 28(3), 26) and DSA/DUA signed (scope, duration, security, destruction/return).",
      //       req: false,
      //       refs: [
      //         { title: "GDPR Art. 28(3)", url: "https://gdpr-info.eu/art-28-gdpr/" },
      //         { title: "GDPR Art. 26", url: "https://gdpr-info.eu/art-26-gdpr/" }
      //       ],
      //     },
      //   ],
      // },
      {
        k: "4f",
        label:
          "Maximum permitted retention/access period set and followed.",
        req: true,
        refs: [{ title: "HRL §19f", url: "https://lovdata.no/dokument/NL/lov/2014-06-20-43" }],
      },
      {
        k: "4g",
        label:
          "Agreement aligns with SPE checklists.",
        req: true,
      },
      {
        k: "4h",
        label:
          "European health data space (EHDS) alignment for cross-border/secondary use (permit; SPE; permitted purposes).",
        req: false,
        refs: [
          { title: "EHDS Art. 68 (permit); Arts. 73/75 (SPE); Art. 53 (purposes)", url: "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=OJ:L_202500327" }
        ],
      },
    ],
  },

  {
    num: 5,
    key: "security",
    title: "Data security & privacy",
    items: [
      {
        k: "5a",
        label: "Pseudonymize where possible; keep keys separate.",
        req: true,
        refs: [{ title: "GDPR Art. 4(5)", url: "https://gdpr-info.eu/art-4-gdpr/" }],
      },
      {
        k: "5b",
        label:
          "Encrypted storage in transit/at rest, Role-Based access control, multi-factor authentication, network segregation, key mgmt, logging with risk-based review.",
        req: true,
        refs: [
          { title: "GDPR Art. 32", url: "https://gdpr-info.eu/art-32-gdpr/" },
          { title: "PRA §22; PRR §14; Normen factsheets", url: "https://www.helsedirektoratet.no/normen/logging-og-innsyn-i-logg-faktaark-15" }
        ],
      },
      {
        k: "5c",
        label:
          "Derived datasets with personal data protected equally.",
        req: true,
        refs: [{ title: "GDPR Art. 5(1)(f); Art. 32", url: "https://gdpr-info.eu/art-5-gdpr/" }],
      },
      {
        k: "5d",
        label:
          "Data Protection Impact Assessment (DPIA) done before analysis (large-scale health/innovative AI/vulnerable groups) or rationale recorded.",
        req: true,
        refs: [{ title: "GDPR Art. 35", url: "https://gdpr-info.eu/art-35-gdpr/" }],
      },
      {
        k: "5e",
        label:
          "Consult Data Protection Officer (DPO) as required; record advice and implement recommendations.",
        req: false,
        refs: [{ title: "GDPR Arts. 37–39", url: "https://gdpr-info.eu/chapter-4/" }],
      },
      {
        k: "5f",
        label:
          "Sharing within NO/EU: verify permission, lawful basis/principles; respect IP/licensing/REK terms.",
        req: false,
        refs: [
          { title: "GDPR Art. 5(1)(b)-(c); Art. 6(1)", url: "https://gdpr-info.eu/art-5-gdpr/" },
          { title: "GDPR Arts. 44–49 (transfers)", url: "https://gdpr-info.eu/chapter-5/" },
          { title: "HRA §33 (conditions)", url: "https://lovdata.no/lov/2008-06-20-44/%C2%A733" }
        ],
      },
      {
        k: "5g",
        label:
          "Transfers outside EEA: lawful mechanism (adequacy/Standard Contractual Clauses/derogations); Transfer Impact Assessment (TIA) documented; approvals/logs kept.",
        req: true,
        refs: [
          { title: "GDPR Arts. 44–46", url: "https://gdpr-info.eu/chapter-5/" },
          { title: "GDPR Art. 49", url: "https://gdpr-info.eu/art-49-gdpr/" }
        ],
      },
      {
        k: "5h",
        label:
          "Third-party tools/vendors: GDPR 28 DPAs; safeguards vetted.",
        req: true,
        refs: [{ title: "GDPR Art. 28", url: "https://gdpr-info.eu/art-28-gdpr/" }],
      },
      {
        k: "5i",
        label:
          "Data breach: notify national data protection authority (Datatilsynet) within 72h where required; assess duty to inform subjects.",
        req: true,
        refs: [{ title: "GDPR Arts. 33–34", url: "https://gdpr-info.eu/art-33-gdpr/" }],
      },
      { k: "5j", label: "Periodic review of security (incl. SPE/SAE).", req: true },
    ],
  },

  {
    num: 6,
    key: "quality",
    title: "Data minimisation & quality",
    items: [
      {
        k: "6a",
        label:
          "Identify & extract only necessary/approved fields (minimisation & purpose limitation).",
        req: true,
        refs: [{ title: "GDPR Art. 5(1)(b)-(c)", url: "https://gdpr-info.eu/art-5-gdpr/" }],
      },
      {
        k: "6b",
        label:
          "Post-extraction sweeps for unexpected/disallowed content (free text/images) unless approved.",
        req: true,
        refs: [{ title: "GDPR Art. 5(1)(c); Art. 25", url: "https://gdpr-info.eu/art-25-gdpr/" }],
      },
      {
        k: "6c",
        label:
          "Conform to approvals, scope & objectives.",
        req: true,
      },
      {
        k: "6d",
        label:
          "Periodic data quality review aligned with emerging standards/regulatory updates (accuracy/accountability).",
        req: true,
        refs: [{ title: "GDPR Art. 5(1)(d); 5(2)", url: "https://gdpr-info.eu/art-5-gdpr/" }],
      },
    ],
  },

  {
    num: 7,
    key: "analysis",
    title: "Analysis & AI development",
    items: [
      {
        k: "7a",
        label:
          "Analyse strictly within SPE/SAE; validated tools; no re-identification unless legally authorised.",
        req: true,
        refs: [{ title: "GDPR Art. 5(1)(a)-(b)", url: "https://gdpr-info.eu/art-5-gdpr/" }],
      },
      {
        k: "7b",
        label:
          "Maintain comprehensive preprocessing documentation (cleaning/transforms/anonymity) & technical documentation.",
        req: true,
        refs: [
          { title: "AI Act Art. 10; Annex XI–XII", url: "https://ai-act-law.eu/article/10/" },
          { title: "GDPR Art. 5(2)", url: "https://gdpr-info.eu/art-5-gdpr/" }
        ],
      },
      {
        k: "7c",
        label:
          "Perform an AI risk classification assessment; document (classification framework, Annex III categories).",
        req: true,
        showFor: ["research","innovation"],
        refs: [
          { title: "AI Act Arts. 6–7; Annex III", url: "https://ai-act-law.eu/article/6/" }
        ],
        children: [
          {
            k: "7c-1",
            label:
              "High-risk AI: implement risk mgmt & controls; define human oversight; validate performance; manage drift; ensure cybersecurity.",
            req: true,
            refs: [{ title: "AI Act Arts. 9–15", url: "https://ai-act-law.eu/article/9/" }],
          },
          {
            k: "7c-2",
            label:
              "High-risk AI: data governance for train/val/test — representative, relevant, accurate; bias assessed.",
            req: true,
            refs: [{ title: "AI Act Art. 10(2)", url: "https://ai-act-law.eu/article/10/" }],
          },
          // {
          //   k: "7c-3",
          //   label:
          //     "Non-high-risk AI: adopt good practice on data quality, bias (subgroup eval/mitigation/monitoring), transparency & human oversight; consider voluntary codes.",
          //   req: false,
          //   refs: [{ title: "AI Act Arts. 95–96", url: "https://ai-act-law.eu/article/95/" }],
          // },
          // {
          //   k: "7c-4",
          //   label:
          //     "Maintain technical documentation & record-keeping (model, algorithms, data sources, intended purpose).",
          //   req: true,
          //   refs: [
          //     { title: "AI Act Art. 11 (tech docs)", url: "https://ai-act-law.eu/article/11/" },
          //     { title: "AI Act Art. 12 (records)", url: "https://ai-act-law.eu/article/12/" }
          //   ],
          // },
          // {
          //   k: "7c-5",
          //   label:
          //     "For AI projects: ongoing obligations — risk mgmt, data governance, docs, record-keeping, transparency, human oversight, accuracy & cybersecurity.",
          //   req: true,
          //   refs: [{ title: "AI Act Arts. 9–15", url: "https://ai-act-law.eu/article/9/" }],
          // },
          // {
          //   k: "7c-6",
          //   label:
          //     "If developing an AI model: verify permission & GDPR legal basis; remove personal data or ensure vetted/validated use; respect IP/licensing & REK terms.",
          //   req: true,
          //   refs: [
          //     { title: "AI Act Art. 2(7) (scope)", url: "https://ai-act-law.eu/article/2/" },
          //     { title: "GDPR Art. 5(1)(b)-(c); Art. 6(1); Arts. 44–49", url: "https://gdpr-info.eu/art-6-gdpr/" }
          //   ],
          // },
          // {
          //   k: "7c-7",
          //   label:
          //     "If deploying on EU market: conformity/CE/registration in EU AI database where required.",
          //   req: false,
          //   refs: [{ title: "AI Act Arts. 30 & 43", url: "https://ai-act-law.eu/article/30/" }],
          // },
          // {
          //   k: "7c-8",
          //   label:
          //     "Risk mgmt & bias mitigation documented for interpretation of results.",
          //   req: true,
          //   refs: [
          //     { title: "AI Act Art. 9; Art. 10(2)(e)", url: "https://ai-act-law.eu/article/9/" },
          //     { title: "GDPR Art. 35 (DPIA)", url: "https://gdpr-info.eu/art-35-gdpr/" },
          //   ],
          // },
          // {
          //   k: "7c-9",
          //   label:
          //     "Exclude malpractice data; run fairness checks (e.g., demographic parity, equalised odds, subgroup analysis); schedule bias audits & compliance reviews; handle subject rights.",
          //   req: true,
          //   refs: [
          //     { title: "AI Act Arts. 9, 10(2)(e), 15", url: "https://ai-act-law.eu/article/9/" },
          //     { title: "GDPR Arts. 12–22 (rights)", url: "https://gdpr-info.eu/chapter-3/" }
          //   ],
          // },
          // {
          //   k: "7c-10",
          //   label:
          //     "Plan periodic reassessment & review as tech/regulations evolve.",
          //   req: true,
          // },
        ],
      },
      {
        k: "7d",
        label:
          "Non-high-risk AI: adopt good practice on data quality, bias (subgroup eval/mitigation/monitoring), transparency & human oversight; consider voluntary codes.",
        req: false,
        showFor: ["research", "quality","innovation"],
        refs: [{ title: "AI Act Arts. 95–96", url: "https://ai-act-law.eu/article/95/" }],
      },
      {
        k: "7e",
        label:
          "Maintain technical documentation & record-keeping (model, algorithms, data sources, intended purpose).",
        req: true,
        showFor: ["research", "quality","innovation"],
        refs: [
          { title: "AI Act Art. 11 (tech docs)", url: "https://ai-act-law.eu/article/11/" },
          { title: "AI Act Art. 12 (records)", url: "https://ai-act-law.eu/article/12/" }
        ],
      },
      {
        k: "7f",
        label:
          "For AI projects: ongoing obligations — risk mgmt, data governance, docs, record-keeping, transparency, human oversight, accuracy & cybersecurity.",
        req: false,
        showFor: ["research", "quality","innovation"],
        refs: [{ title: "AI Act Arts. 9–15", url: "https://ai-act-law.eu/article/9/" }],
      },
      {
        k: "7g",
        label:
          "If developing an AI model: verify permission & GDPR legal basis; remove personal data or ensure vetted/validated use; respect intelectual propety/licensing & REK terms.",
        req: true,
        showFor: ["research", "quality","innovation"],
        refs: [
          { title: "AI Act Art. 2(7) (scope)", url: "https://ai-act-law.eu/article/2/" },
          { title: "GDPR Art. 5(1)(b)-(c); Art. 6(1); Arts. 44–49", url: "https://gdpr-info.eu/art-6-gdpr/" }
        ],
      },
      {
        k: "7h",
        label:
          "If deploying on EU market: conformity/CE marking/registration in EU AI database where required.",
        req: false,
        showFor: ["research", "quality","innovation"],
        refs: [{ title: "AI Act Arts. 30 & 43", url: "https://ai-act-law.eu/article/30/" }],
      },
      {
        k: "7i",
        label:
          "Risk mgmt & bias mitigation documented for interpretation of results.",
        req: false,
        showFor: ["research", "quality","innovation"],
        refs: [
          { title: "AI Act Art. 9; Art. 10(2)(e)", url: "https://ai-act-law.eu/article/9/" },
          { title: "GDPR Art. 35 (DPIA)", url: "https://gdpr-info.eu/art-35-gdpr/" },
        ],
      },
      {
        k: "7j",
        label:
          "Exclude malpractice data; run fairness checks (e.g., demographic parity, equalised odds, subgroup analysis); schedule bias audits & compliance reviews; handle subject rights.",
        req: false,
        showFor: ["research", "quality","innovation"],
        refs: [
          { title: "AI Act Arts. 9, 10(2)(e), 15", url: "https://ai-act-law.eu/article/9/" },
          { title: "GDPR Arts. 12–22 (rights)", url: "https://gdpr-info.eu/chapter-3/" }
        ],
      },
      {
        k: "7k",
        label:
          "Plan periodic reassessment & review as tech/regulations evolve.",
        req: true,
        showFor: ["research", "quality","innovation"],
      }
    ],
  },

  {
    num: 8,
    key: "compliance",
    title: "Compliance monitoring & auditing",
    items: [
      {
        k: "8a",
        label:
          "Internal audit (e.g., by/with health trust); remediate discrepancies.",
        req: true,
        refs: [{ title: "GDPR Art. 5(2); Art. 24", url: "https://gdpr-info.eu/art-24-gdpr/" }],
      },
      { k: "8b", label: "Maintain a compliance report (docs/approvals/permits/agreements).", req: true },
      {
        k: "8c",
        label:
          "All source-system extractions logged (who/when/what); periodic risk-based log review.",
        req: true,
        refs: [{ title: "PRA §22; PRR §14; Normen 5.4.4", url: "https://lovdata.no/forskrift/2019-03-01-168/%C2%A714" }],
      },
      {
        k: "8d",
        label:
          "Use only for approved protocol; seek amendments before new purposes or analyses.",
        req: true,
        refs: [{ title: "GDPR Art. 5(1)(b); HRA §33", url: "https://gdpr-info.eu/art-5-gdpr/" }],
      },
      {
        k: "8e",
        label:
          "Review & update audit/compliance process periodically (law & technology changes).",
        req: true,
      },
    ],
  },

  {
    num: 9,
    key: "closeout",
    title: "Dissemination, close-out, retention & deletion",
    items: [
      {
        k: "9a",
        label:
          "Before releasing results, ensure no individual can be identified in outputs.",
        req: true,
        refs: [{ title: "GDPR Art. 5(1)(c); Art. 89(1)", url: "https://gdpr-info.eu/art-89-gdpr/" }],
      },
      {
        k: "9b",
        label:
          "Publications/reports include ethics & data-protection statements (e.g., REK ref., GDPR compliance; Helsinki where applicable).",
        req: false,
      },
      {
        k: "9c",
        label:
          "If an AI product/service: disclose intended use, limitations, validation status; transparency.",
        req: false,
        refs: [{ title: "AI Act Art. 13", url: "https://ai-act-law.eu/article/13/" }],
      },
      {
        k: "9d",
        label:
          "Fulfil reporting obligations (REK/registries/funders; EU AI database if required).",
        req: false,
        refs: [{ title: "AI Act Chapter III", url: "https://ai-act-law.eu/chapter/3/" }],
      },
      {
        k: "9e",
        label: "Post-project closure actions (expand when ready).",
        req: false,
        children: [
          {
            k: "9e-1",
            label:
              "Delete/anonymize all personal data at retention end; double-check backups & stray copies; document date & method.",
            req: true,
            refs: [{ title: "GDPR Art. 5(1)(e); 5(2)", url: "https://gdpr-info.eu/art-5-gdpr/" }],
          },
          {
            k: "9e-2",
            label:
              "Archive key documentation securely (approvals, consent, scripts, final reports, DPIA), typically 5–10 years without identifiable raw data.",
            req: true,
            refs: [{ title: "GDPR Art. 5(1)(e); Art. 89(1)", url: "https://gdpr-info.eu/art-89-gdpr/" }],
          },
          {
            k: "9e-3",
            label:
              "If retaining/reusing data: record new legal basis (renewed consent, extended REK, or lawful data bank/registry/biobank).",
            req: true,
            refs: [
              { title: "GDPR Art. 6(1); Art. 9(2)", url: "https://gdpr-info.eu/art-6-gdpr/" },
              { title: "HRA §§13–14; §33", url: "https://lovdata.no/lov/2008-06-20-44/%C2%A713" },
              { title: "HRL rules", url: "https://lovdata.no/dokument/NL/lov/2014-06-20-43" }
            ],
          },
          {
            k: "9e-4",
            label:
              "Final debrief meeting; note best practices and recommendations.",
            req: false,
          },
          {
            k: "9e-5",
            label:
              "Notify relevant bodies (e.g., REK) that the study is concluded and data destroyed; update RoPA to mark project finished.",
            req: true,
            refs: [{ title: "GDPR Art. 30 (RoPA)", url: "https://gdpr-info.eu/art-30-gdpr/" }],
          },
          {
            k: "9e-6",
            label:
              "If an AI model continues in clinical use: govern under ops protocols (monitoring/maintenance/fallback); if discontinued: purge model artifacts to ensure no personal data persists.",
            req: false,
            refs: [{ title: "AI Act Arts. 9–15; 30; 43", url: "https://ai-act-law.eu/article/9/" }],
          },
        ],
      },
    ],
  },
];

/* Flow questions*/
const FLOW = {
  1: { q: "Project classification complete & documented?", onYes: 2, onNo: 1 },
  2: { q: "Valid legal route and consent completed?", onYes: 3, onNo: 2 },
  3: { q: "All ethical and regulatory approvals in place?", onYes: 4, onNo: 3 },
  4: { q: "Data access route & contracts are ok?", onYes: 5, onNo: 4 },
  5: {
    q: "Information security & privacy measures and risks controlled?",
    onYes: 6,
    onNo: 5,
  },
  6: { q: "Extract matches necessary data approvals?", onYes: 7, onNo: 6 },
  /* Step 7 has several conditional questions */
  7: [
    { q: "Any new additional purpose ?", yes: 1, no: "next" },
    { q: "Any new approvals needed?", yes: 3, no: "next" },
    { q: "Any new access/contracts?", yes: 4, no: 8 },
  ],
  8: { q: "Any gaps found?", onYes: 4, onNo: 9 },
  9: { q: "Will you retain or reuse data beyond approved plan?", onYes: 1, onNo: "end" },
};

/* ------------ State ------------ */
const STORAGE = "suhr_flow_v2_nested";
const $  = (s) => document.querySelector(s);
const $$ = (s) => Array.from(document.querySelectorAll(s));
const state = {
  purpose: null,
  checks: {},    
  savedAt: null,
  visible: 0,
  step: 0,
  subQ: 0,
  reachedEnd: false,
};

/* ------------ Purpose UI ------------ */
function renderPurposes() {
  const host = $("#purposeList");
  host.innerHTML = "";
  PURPOSES.forEach((p) => {
    const el = document.createElement("label");
    el.className = "option";
    el.innerHTML = `
      <input type="radio" name="purpose" value="${p.id}">
      <div style="display:flex;justify-content:space-between;gap:8px">
        <div><b>${p.title}</b><div class="tiny" style="margin-top:4px">${p.blurb}</div></div>
        <span class="tag gdpr">${p.id === "anon" ? "No GDPR" : "GDPR"}</span>
      </div>`;

    el.addEventListener("click", (e) => {
      host.querySelectorAll(".option").forEach(opt => opt.classList.remove("active"));
      el.classList.add("active");
      host.querySelectorAll('input[name="purpose"]').forEach(inp => {
        inp.checked = (inp.value === p.id);
      });

      state.purpose = p.id;
      save(true);

      $("#anonMsg").classList.toggle("hidden", state.purpose !== "anon");

      if (p.id === "anon") {
        hideFlow();
        renderDots(0);
        $("#timeline").innerHTML = "";
        $("#finish").classList.remove("show");
        state.reachedEnd = false;
        updateProgress();
        return;
      }

      state.visible = Math.max(1, state.visible || 1);
      state.step = 1;
      state.subQ = 0;
      state.reachedEnd = false;
      save(true);
      $("#finish").classList.remove("show");
      renderDots(state.visible);
      renderTimeline();
      showFlow();
      askCurrent(); 
    });

    host.appendChild(el);
  });

  if (state.purpose) {
    $$('input[name="purpose"]').forEach((i) => {
      const isMatch = i.value === state.purpose;
      i.checked = isMatch;
      if (isMatch) i.closest(".option").classList.add("active");
    });
    $("#anonMsg").classList.toggle("hidden", state.purpose !== "anon");
  }
}

/* ------------ Timeline (accordion) ------------ */
function renderTimeline() {
  const host = $("#timeline");
  host.innerHTML = "";
  if (!state.purpose || state.purpose === "anon") return;
  const v = state.visible || 1;
  for (let i = 0; i < v; i++) addStep(host, STEPS[i], i + 1);
  expandDetailsForStep(state.step);
  markCurrentStep(state.step);
  requestAnimationFrame(drawLinkToFlow);
}

function addStep(host, step, idx) {
  const done = isStepComplete(step);
  const sec = document.createElement("section");
  sec.className = "step" + (done ? " done" : "");
  sec.dataset.step = step.key;
  sec.innerHTML = `
    <div class="head">
      <div class="title">
        <span class="num">${step.num}</span>
        <div><b>${step.title}</b></div>
      </div>
      <div style="display:flex;gap:8px;align-items:center">
        <span class="badge" id="badge_${step.key}">${done ? "Complete ✓" : "In progress"}</span>
        <button class="toggle" data-fold="${step.key}" aria-expanded="${!done}">Expand⬇</button>
      </div>
    </div>
    <div class="body fold" id="fold_${step.key}">
      <ul class="list"></ul>
    </div>`;
  const ul = sec.querySelector(".list");

  step.items.forEach((it) => {
    if (it.showFor && !it.showFor.includes(state.purpose)) return;
    const checked = !!state.checks[step.key]?.[it.k];
    const li = document.createElement("li");
    li.className = "li" + (it.children && it.children.length ? " has-children" : "");
    const id = `${step.key}_${it.k}`;

    const refsHtml =
      it.refs && it.refs.length
        ? ` <small class="refs">` +
          it.refs
            .map(
              (r) =>
                `<a href="${r.url}" target="_blank" rel="noreferrer noopener">${(r.title || r.url)}</a>`
            )
            .join(" • ") +
          `</small>`
        : "";

    li.innerHTML = `
      <div class="letters">${it.k}</div>
      <label for="${id}">${it.label}${
      it.req ? ` <span class='req'>★</span>` : " <span class='opt'>(opt)</span>"
    }${refsHtml}</label>
      <div style="display:flex;align-items:center;gap:8px">
        <input class="chk" type="checkbox" id="${id}" ${checked ? "checked" : ""}/>
        <svg class="box" viewBox="0 0 24 24" aria-hidden="true"><path class="tick" d="M5 13l4 4L19 7"/></svg>
      </div>`;

 
    li.addEventListener("click", (e) => {
      if (e.target.closest("a, button, input, .toggle")) return;
      if (e.target.closest(".sublist")) return; 
      if (e.target.closest("label")) e.preventDefault();
      const cb = li.querySelector(".chk");
      cb.checked = !cb.checked;
      cb.dispatchEvent(new Event("change", { bubbles: true }));
    });

    let sublist;
    if (it.children && it.children.length) {
      sublist = document.createElement("ul");
      sublist.className = "sublist";
      sublist.style.display = checked ? "block" : "none";

      it.children.forEach((ch) => {
        if (ch.showFor && !ch.showFor.includes(state.purpose)) return;
        const cChecked = !!state.checks[step.key]?.[ch.k];
        const cli = document.createElement("li");
        cli.className = "li subitem";
        const cid = `${step.key}_${ch.k}`;

        const cRefsHtml =
          ch.refs && ch.refs.length
            ? ` <small class="refs">` +
              ch.refs
                .map(
                  (r) =>
                    `<a href="${r.url}" target="_blank" rel="noreferrer noopener">${(r.title || r.url)}</a>`
                )
                .join(" • ") +
              `</small>`
            : "";

        cli.innerHTML = `
          <div class="letters">${ch.k}</div>
          <label for="${cid}">${ch.label}${
          ch.req ? ` <span class='req'>★</span>` : " <span class='opt'>(opt)</span>"
        }${cRefsHtml}</label>
          <div style="display:flex;align-items:center;gap:8px">
            <input class="chk" type="checkbox" id="${cid}" ${cChecked ? "checked" : ""}/>
            <svg class="box" viewBox="0 0 24 24" aria-hidden="true"><path class="tick" d="M5 13l4 4L19 7"/></svg>
          </div>`;

        cli.addEventListener("click", (e) => {
          if (e.target.closest("a, button, input, .toggle")) { e.stopPropagation(); return; }
          if (e.target.closest("label")) e.preventDefault();
          const ccb = cli.querySelector(".chk");
          ccb.checked = !ccb.checked;
          ccb.dispatchEvent(new Event("change", { bubbles: true }));
          e.stopPropagation();
        });

        cli.querySelector(".chk").addEventListener("change", (e) => {
          (state.checks[step.key] ??= {})[ch.k] = e.target.checked;
          save(true);
          updateStepBadgeAndProgress(step, sec, idx);
        });

        sublist.appendChild(cli);
      });

      li.appendChild(sublist);
    }

    li.querySelector(".chk").addEventListener("change", (e) => {
      (state.checks[step.key] ??= {})[it.k] = e.target.checked;
      if (sublist) {
        sublist.style.display = e.target.checked ? "block" : "none";
      }
      save(true);
      updateStepBadgeAndProgress(step, sec, idx);
    });

    ul.appendChild(li);
  });

  const detailsBtn = sec.querySelector(".toggle");
  detailsBtn.addEventListener("click", () => {
    const pane = document.getElementById("fold_" + step.key);
    const nowFold = pane.classList.toggle("fold");
    detailsBtn.setAttribute("aria-expanded", (!nowFold).toString());
  });

  host.appendChild(sec);
}

function updateStepBadgeAndProgress(step, sec, idx) {
  const nowDone = isStepComplete(step);
  $("#badge_" + step.key).textContent = nowDone ? "Complete ✓" : "In progress";
  if (nowDone && !sec.classList.contains("done")) {
    sec.classList.add("done");
    /*if (idx === 1) advanceToStep(2); */
  } else if (!nowDone) {
    sec.classList.remove("done");
  }
  renderDots(state.visible); 
  updateProgress();
  if ($("#finish").classList.contains("show")) {
    refreshFinishBanner();
  } else if (state.reachedEnd && allStepsComplete()) {
    finish();
  }
}

function expandDetailsForStep(stepNum) {
  if (!stepNum) return;
  $$("#timeline .body").forEach((pane) => pane.classList.add("fold"));
  const current = STEPS[stepNum - 1];
  if (!current) return;
  const pane = document.getElementById("fold_" + current.key);
  if (pane) {
    pane.classList.remove("fold");
    const btn = document.querySelector(`button.toggle[data-fold="${current.key}"]`);
    if (btn) btn.setAttribute("aria-expanded", "true");
  }
  // highlight and link
  markCurrentStep(stepNum);
  // Wait for layout to settle then draw the link
  requestAnimationFrame(drawLinkToFlow);

}

/* ------------ Dots / progress ------------ */
function renderDots(visible) {
  const d = $("#dots");
  d.innerHTML = "";
  for (let i = 1; i <= STEPS.length; i++) {
    const stepObj = STEPS[i - 1];
    const stepDone = isStepComplete(stepObj);
    const dot = document.createElement("div");
    dot.className =
      "dot" +
      (i <= visible ? " unlocked" : "") +
      (i === state.step ? " active" : "") +
      (stepDone ? " done" : "");
    dot.textContent = i;
    dot.setAttribute("aria-label", `Step ${i}${stepDone ? " complete" : ""}`);
    if (i <= visible) {
      dot.addEventListener("click", () => {
        state.step = i;
        state.subQ = 0;
        save(true);
        askCurrent();
        scrollToStep(i);
        highlightDot();
        requestAnimationFrame(drawLinkToFlow);
      });
    }
    d.appendChild(dot);
  }
  updateProgress();
}
function highlightDot() {
  $$("#dots .dot").forEach((el, idx) => {
    el.classList.toggle("active", idx + 1 === state.step);
  });
}

function scrollToStep(n) {
  const el = document.querySelector(`.step:nth-of-type(${n})`);
  if (!el) return;
  el.scrollIntoView({ behavior: "smooth", block: "start" });
  el.animate(
    [
      { outlineColor: "#56b4e9", outlineWidth: "0px" },
      { outlineColor: "#56b4e9", outlineWidth: "6px" },
      { outlineColor: "transparent", outlineWidth: "0px" },
    ],
    { duration: 800 }
  );
}

/* ------------ Flow controller (Yes/No) ------------ */
const flow = $("#flow"),
  qtxt = $("#qtxt"),
  yesBtn = $("#yesBtn"),
  noBtn = $("#noBtn");

function showFlow() { flow.classList.remove("hidden"); }
function hideFlow() { flow.classList.add("hidden"); }

function askCurrent() {
  $("#finish").classList.remove("show");

  if (state.purpose === "anon" || !state.step) {
    hideFlow();
    return;
  }

  expandDetailsForStep(state.step);
  markCurrentStep(state.step);
  requestAnimationFrame(drawLinkToFlow);

  if (state.step === 7) {
    const seq = FLOW[7];
    let idx = state.subQ;
    if (idx >= seq.length) {
      state.step = 8;
      state.subQ = 0;
      renderDots(state.visible);
      askCurrent();
      return;
    }
    const node = seq[idx];
    qtxt.textContent = node.q;
    yesBtn.onclick = () => {
      if (node.yes === "next") {
        state.subQ++;
        askCurrent();
        return;
      }
      goto(node.yes);
    };
    noBtn.onclick = () => {
      if (node.no === "next") {
        state.subQ++;
        askCurrent();
        return;
      }
      goto(node.no);
    };
    return;
  }

  const node = FLOW[state.step];
  if (!node) {
    hideFlow();
    return;
  }
  qtxt.textContent = node.q;
  yesBtn.onclick = () => goto(node.onYes);
  noBtn.onclick = () => goto(node.onNo);
}

function goto(dest) {
  if (dest === "end") {
    finish();
    return;
  }
  state.step = dest;
  state.subQ = 0;
  if (state.step > state.visible) state.visible = state.step;
  renderDots(state.visible);
  renderTimeline();
  askCurrent();
  scrollToStep(state.step);
  save(true);
  requestAnimationFrame(drawLinkToFlow);
}

/* Called when step 1 completes to auto reveal step 2 */
function advanceToStep(n) {
  if (state.visible < n) {
    state.visible = n;
    renderDots(state.visible);
    renderTimeline();
    scrollToStep(n);
  }
  state.step = n;
  state.subQ = 0;
  askCurrent();
  save(true);
}

/* ------------ Helpers ------------ */
function itemVisibleForPurpose(it) {
  return !(it.showFor && !it.showFor.includes(state.purpose));
}

function isStepComplete(step) {
  const d = state.checks[step.key] || {};

  const checkItem = (it, parentChecked = true) => {
    if (!itemVisibleForPurpose(it)) return true; 
    if (!parentChecked) return true;

    if (it.req && !d[it.k]) return false;

    if (it.children && d[it.k]) {
      for (const ch of it.children) {
        if (!itemVisibleForPurpose(ch)) continue;
        if (ch.req && !d[ch.k]) return false;
      }
    }
    return true;
  };

  for (const it of step.items) {
    if (!checkItem(it, true)) return false;
  }
  return true;
}

function allStepsComplete() {
  if (!state.purpose || state.purpose === "anon") return false;
  return STEPS.every((s) => isStepComplete(s));
}

function updateProgress() {
  let total = 0, done = 0;
  STEPS.forEach((s) => {
    if (state.purpose === "anon" && s.num > 1) return;
    const d = state.checks[s.key] || {};
    s.items.forEach((it) => {
      if (!itemVisibleForPurpose(it)) return;

      const countChild = (ch, parentChecked) => {
        if (!itemVisibleForPurpose(ch) || !parentChecked) return;
        if (ch.req) {
          total++;
          if (d[ch.k]) done++;
        }
      };

      if (it.req) {
        total++;
        if (d[it.k]) done++;
      }
      if (it.children && d[it.k]) {
        it.children.forEach((ch) => countChild(ch, true));
      }
    });
  });
  const pct = total ? Math.round((100 * done) / total) : 0;
  $("#pbar").style.width = pct + "%";
}

/* ------------ Finish ------------ */
function finish() {
  hideFlow();
  state.reachedEnd = true;
  save(true);
  const ok = allStepsComplete();
  const titleEl = $("#finishTitle");
  const subEl = $("#finishSub");
  const confettiHost = $("#confetti");
  if (ok) {
    titleEl.textContent = "End 🎉";
    subEl.textContent = "All flow checks passed.";
    confettiHost.innerHTML = "";
    confetti(24);
  } else {
    titleEl.textContent = "End";
    subEl.textContent = "";
    confettiHost.innerHTML = "";
  }
  $("#finish").classList.add("show");
}
function refreshFinishBanner() {
  const ok = allStepsComplete();
  const titleEl = $("#finishTitle");
  const subEl = $("#finishSub");
  const confettiHost = $("#confetti");
  if (ok) {
    titleEl.textContent = "End 🎉";
    subEl.textContent = "All flow checks passed.";
    confettiHost.innerHTML = "";
    confetti(24);
  } else {
    titleEl.textContent = "End";
    subEl.textContent = "";
    confettiHost.innerHTML = "";
  }
}
function confetti(n) {
  const host = $("#confetti");
  host.innerHTML = "";
  for (let i = 0; i < n; i++) {
    const piece = document.createElement("i");
    piece.style.setProperty("--dx", Math.random() * 300 - 150 + "px");
    piece.style.left = 20 + Math.random() * 60 + "%";
    piece.style.background = i % 2 ? "#0072B2" : "#E69F00";
    piece.style.animationDelay = Math.random() * 0.4 + "s";
    host.appendChild(piece);
  }
}

/* ------------ Save/Load ------------ */
function save(quiet = false) {
  state.savedAt = Date.now();
  localStorage.setItem(STORAGE, JSON.stringify(state));
  if (!quiet) updateProgress();
}
function load() {
  try {
    const raw = localStorage.getItem(STORAGE);
    if (raw) Object.assign(state, JSON.parse(raw));
  } catch (e) {}
}

/* ------------ Clear / Reset ------------ */
function clearAll() {
  try { localStorage.removeItem(STORAGE); } catch (e) {}
  state.purpose = null;
  state.checks = {};
  state.savedAt = null;
  state.visible = 0;
  state.step = 0;
  state.subQ = 0;
  state.reachedEnd = false;
  renderPurposes();
  renderDots(0);
  $("#timeline").innerHTML = "";
  $("#finish").classList.remove("show");
  $("#anonMsg").classList.add("hidden");
  hideFlow();
  updateProgress();
}

/* ------------ (a) mark the current step and (b) draw the arrow ------------ */
function markCurrentStep(stepNum) {
  // Clear old
  $$("#timeline .step").forEach(el => el.classList.remove("current"));
  const current = document.querySelector(`.step:nth-of-type(${stepNum})`);
  if (current) current.classList.add("current");
}

function drawLinkToFlow() {
  const flowEl = $("#flow");
  const svg = $("#linkSvg");
  const path = $("#linkPath");

  // Hide arrow if flow is hidden or no current step
  const current = document.querySelector(`.step:nth-of-type(${state.step})`);
  const flowHidden = flowEl.classList.contains("hidden");
  if (!current || flowHidden) {
    if (path) path.setAttribute("d", "");
    return;
  }

  // Dimensions
  const sRect = current.getBoundingClientRect();
  const fRect = flowEl.getBoundingClientRect();

  // Start: bottom-center of current step card
  const x1 = sRect.left + sRect.width / 2;
  const y1 = sRect.bottom + 4; // a tiny gap below the step

  // End: top-center of the flow bar
  const x2 = fRect.left + fRect.width / 2;
  const y2 = fRect.top - 6; // a tiny gap above the bar

  // Control points for a smooth bent curve
  const midY = (y1 + y2) / 2;
  const c1x = x1;
  const c1y = midY;
  const c2x = x2;
  const c2y = midY;

  // Resize SVG viewBox to viewport and draw
  svg.setAttribute("viewBox", `0 0 ${window.innerWidth} ${window.innerHeight}`);
  path.setAttribute("d", `M ${x1} ${y1} C ${c1x} ${c1y}, ${c2x} ${c2y}, ${x2} ${y2}`);

  // Optional: animate the path slightly on change (simple stroke-dash trick)
  path.style.transition = "d 0.2s ease";
}

/* ------------ Boot ------------ */
// Keep arrow aligned on resize/scroll
window.addEventListener("resize", drawLinkToFlow, { passive: true });
window.addEventListener("scroll", drawLinkToFlow, { passive: true });
load();
renderPurposes();
if (state.purpose && state.purpose !== "anon") {
  state.visible = state.visible || 1;
  state.step = state.step || 1;
  renderDots(state.visible);
  renderTimeline();
  showFlow();
  askCurrent();
} else {
  hideFlow();
}
updateProgress();

// Clear button handler
document.getElementById("clearBtn").addEventListener("click", () => {
  const ok = confirm("Clear all saved progress and do a fresh start? This will remove your selections!");
  if (ok) clearAll();
});