/**
 * SecondarySchoolDetailView Component
 * Dedicated detail view for secondary schools with scroll-to-section navigation.
 * All sections render at once; the sticky nav scrolls to each.
 */

'use client';

import { useEffect, useState } from 'react';
import { useRouter } from 'next/navigation';
import { useComparison } from '@/hooks/useComparison';
import { PerformanceChart } from './PerformanceChart';
import { MetricTooltip } from './MetricTooltip';
import { SchoolMap } from './SchoolMap';
import type {
  School, SchoolResult, AbsenceData,
  OfstedInspection, OfstedParentView, SchoolCensus,
  SchoolAdmissions, SenDetail, Phonics,
  SchoolDeprivation, SchoolFinance, NationalAverages,
} from '@/lib/types';
import { formatPercentage, formatProgress, formatAcademicYear, buildOfstedHeroChip } from '@/lib/utils';
import { DeltaChip } from './DeltaChip';
import styles from './SecondarySchoolDetailView.module.css';

const OFSTED_LABELS: Record<number, string> = {
  1: 'Outstanding', 2: 'Good', 3: 'Requires Improvement', 4: 'Inadequate',
};

const RC_LABELS: Record<number, string> = {
  1: 'Exceptional', 2: 'Strong', 3: 'Expected standard', 4: 'Needs attention', 5: 'Urgent improvement',
};

const RC_CATEGORIES = [
  { key: 'rc_inclusion' as const,             label: 'Inclusion' },
  { key: 'rc_curriculum_teaching' as const,   label: 'Curriculum & Teaching' },
  { key: 'rc_achievement' as const,           label: 'Achievement' },
  { key: 'rc_attendance_behaviour' as const,  label: 'Attendance & Behaviour' },
  { key: 'rc_personal_development' as const,  label: 'Personal Development' },
  { key: 'rc_leadership_governance' as const, label: 'Leadership & Governance' },
  { key: 'rc_early_years' as const,           label: 'Early Years' },
  { key: 'rc_sixth_form' as const,            label: 'Sixth Form' },
];

function progressClass(val: number | null | undefined, modStyles: Record<string, string>): string {
  if (val == null) return '';
  if (val > 0) return modStyles.progressPositive;
  if (val < 0) return modStyles.progressNegative;
  return '';
}

function deprivationDesc(decile: number): string {
  if (decile <= 3) return `This school is in one of England's most deprived areas (decile ${decile}/10). Many pupils may face additional challenges at home.`;
  if (decile <= 7) return `This school is in an area with average levels of deprivation (decile ${decile}/10).`;
  return `This school is in one of England's less deprived areas (decile ${decile}/10).`;
}

interface SecondarySchoolDetailViewProps {
  schoolInfo: School;
  yearlyData: SchoolResult[];
  absenceData: AbsenceData | null;
  ofsted: OfstedInspection | null;
  parentView: OfstedParentView | null;
  census: SchoolCensus | null;
  admissions: SchoolAdmissions | null;
  senDetail: SenDetail | null;
  phonics: Phonics | null;
  deprivation: SchoolDeprivation | null;
  finance: SchoolFinance | null;
}

export function SecondarySchoolDetailView({
  schoolInfo, yearlyData,
  ofsted, parentView, census, admissions, senDetail, deprivation, finance, absenceData,
}: SecondarySchoolDetailViewProps) {
  const router = useRouter();
  const { addSchool, removeSchool, isSelected } = useComparison();
  const isInComparison = isSelected(schoolInfo.urn);

  const [activeSection, setActiveSection] = useState<string>('');

  const latestResults = yearlyData.length > 0 ? yearlyData[yearlyData.length - 1] : null;

  const [nationalAvg, setNationalAvg] = useState<NationalAverages | null>(null);

  useEffect(() => {
    fetch('/api/national-averages')
      .then(r => r.ok ? r.json() : null)
      .then(data => { if (data) setNationalAvg(data); })
      .catch(() => {});
  }, []);

  const secondaryAvg = nationalAvg?.secondary ?? {};

  const hasSixthForm = schoolInfo.age_range?.includes('18') ?? false;
  const hasFinance = finance != null && finance.per_pupil_spend != null;
  const hasParents = parentView != null && parentView.total_responses != null && parentView.total_responses > 0;
  const hasDeprivation = deprivation != null && deprivation.idaci_decile != null;
  const hasLocation = schoolInfo.latitude != null && schoolInfo.longitude != null;
  const hasWellbeing = (latestResults?.sen_support_pct != null || latestResults?.sen_ehcp_pct != null) || hasDeprivation;
  const p8Suspended = latestResults != null && latestResults.year >= 202425;
  const hasResults = latestResults?.attainment_8_score != null;

  const admissionsTag = (() => {
    const policy = schoolInfo.admissions_policy?.toLowerCase() ?? '';
    if (policy.includes('selective')) return 'Selective';
    const denom = schoolInfo.religious_denomination ?? '';
    if (denom && denom !== 'Does not apply') return 'Faith priority';
    return null;
  })();

  const handleComparisonToggle = () => {
    if (isInComparison) {
      removeSchool(schoolInfo.urn);
    } else {
      addSchool(schoolInfo);
    }
  };

  // Build nav items dynamically based on available data
  const navItems: { id: string; label: string }[] = [];
  if (ofsted) navItems.push({ id: 'ofsted', label: 'Ofsted' });
  if (hasParents) navItems.push({ id: 'parents', label: 'Parents' });
  if (hasResults) navItems.push({ id: 'gcse', label: 'GCSEs' });
  if (admissions) navItems.push({ id: 'admissions', label: 'Admissions' });
  if (hasWellbeing) navItems.push({ id: 'wellbeing', label: 'Wellbeing' });
  if (hasLocation) navItems.push({ id: 'location', label: 'Location' });
  if (hasFinance) navItems.push({ id: 'finances', label: 'Finances' });
  if (yearlyData.length > 1) navItems.push({ id: 'history', label: 'History' });

  // Track active section as user scrolls
  useEffect(() => {
    const ids = navItems.map(n => n.id);
    if (!ids.length) return;
    const observers: IntersectionObserver[] = [];
    const ratioMap: Record<string, number> = {};
    const pickActive = () => {
      const top = Object.entries(ratioMap).sort((a, b) => b[1] - a[1])[0];
      setActiveSection(top?.[1] > 0 ? top[0] : '');
    };
    ids.forEach(id => {
      const el = document.getElementById(id);
      if (!el) return;
      ratioMap[id] = 0;
      const obs = new IntersectionObserver(
        ([entry]) => { ratioMap[id] = entry.intersectionRatio; pickActive(); },
        { threshold: [0, 0.1, 0.25, 0.5, 0.75, 1.0], rootMargin: '-56px 0px 0px 0px' },
      );
      obs.observe(el);
      observers.push(obs);
    });
    return () => observers.forEach(o => o.disconnect());
  // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [navItems.map(n => n.id).join(',')]);

  // ── Ofsted: detect if all OEIF sub-grades match the overall ───────────
  const oeifAllSameGrade = (() => {
    if (!ofsted || ofsted.framework === 'ReportCard') return false;
    const subs = [
      ofsted.quality_of_education,
      ofsted.behaviour_attitudes,
      ofsted.personal_development,
      ofsted.leadership_management,
      ...(ofsted.early_years_provision != null ? [ofsted.early_years_provision] : []),
    ].filter((v): v is number => v != null);
    return subs.length >= 3 && subs.every(v => v === ofsted.overall_effectiveness);
  })();

  // ── Hero signal chip & stats ─────────────────────────────────────────
  const ofstedHeroChip = buildOfstedHeroChip(ofsted);
  const heroAtt8 = latestResults?.attainment_8_score ?? null;
  const heroAtt8Nat = secondaryAvg.attainment_8_score ?? null;
  const heroAcademicYear = latestResults ? formatAcademicYear(latestResults.year) : '';

  return (
    <div className={styles.container}>
      {/* ── Header ─────────────────────────────────────── */}
      <header className={styles.header}>
        <div className={styles.headerContent}>
          <div className={styles.titleSection}>
            <h1 className={styles.schoolName}>{schoolInfo.school_name}</h1>
            <div className={styles.badges}>
              {schoolInfo.school_type && (
                <span className={styles.badge}>{schoolInfo.school_type}</span>
              )}
              {schoolInfo.gender && schoolInfo.gender !== 'Mixed' && (
                <span className={styles.badge}>{schoolInfo.gender}&apos;s school</span>
              )}
              {schoolInfo.age_range && (
                <span className={styles.badge}>{schoolInfo.age_range}</span>
              )}
              {hasSixthForm && (
                <span className={styles.badge}>Sixth form</span>
              )}
              {admissionsTag && (
                <span className={`${styles.badge} ${admissionsTag === 'Selective' ? styles.badgeSelective : styles.badgeFaith}`}>
                  {admissionsTag}
                </span>
              )}
            </div>
            {schoolInfo.address && (
              <p className={styles.address}>
                {schoolInfo.address}{schoolInfo.postcode && `, ${schoolInfo.postcode}`}
              </p>
            )}
            <div className={styles.headerDetails}>
              {schoolInfo.headteacher_name && (
                <span className={styles.headerDetail}>
                  <strong>Headteacher:</strong> {schoolInfo.headteacher_name}
                </span>
              )}
              {schoolInfo.website && (
                <span className={styles.headerDetail}>
                  <a href={/^https?:\/\//i.test(schoolInfo.website) ? schoolInfo.website : `https://${schoolInfo.website}`} target="_blank" rel="noopener noreferrer">
                    School website ↗
                  </a>
                </span>
              )}
              {(schoolInfo.total_pupils != null || latestResults?.total_pupils != null) && (
                <span className={styles.headerDetail}>
                  <strong>Pupils:</strong> {(schoolInfo.total_pupils ?? latestResults!.total_pupils!).toLocaleString()}
                  {schoolInfo.capacity != null && ` (capacity: ${schoolInfo.capacity})`}
                </span>
              )}
              {schoolInfo.trust_name && (
                <span className={styles.headerDetail}>
                  Part of <strong>{schoolInfo.trust_name}</strong>
                </span>
              )}
            </div>
          </div>
          <div className={styles.actions}>
            <button
              onClick={handleComparisonToggle}
              className={isInComparison ? styles.btnRemove : styles.btnAdd}
            >
              {isInComparison ? '✓ In Comparison' : '+ Add to Compare'}
            </button>
          </div>
        </div>

        {/* Hero signal chips */}
        <div className={styles.heroChips}>
          <div className={`${styles.heroChip} ${styles[`tone-${ofstedHeroChip.tone}`]}`}>
            <div className={styles.heroChipTitle}>{ofstedHeroChip.title}</div>
            <div className={styles.heroChipSub}>{ofstedHeroChip.subtitle}</div>
            {ofstedHeroChip.detail && (
              <div className={styles.heroChipDetail}>{ofstedHeroChip.detail}</div>
            )}
          </div>

          {admissions?.oversubscribed && (
            <div className={`${styles.heroChip} ${styles['tone-coral']}`}>
              <div className={styles.heroChipTitle}>Oversubscribed</div>
              <div className={styles.heroChipSub}>
                {admissions.first_preference_offer_pct != null
                  ? `${Math.round(admissions.first_preference_offer_pct)}% of first-choice applicants offered a place`
                  : 'More applicants than places'}
              </div>
            </div>
          )}
        </div>

        {/* At-a-glance stats row */}
        {latestResults && (
          <div className={styles.heroStats}>
            {heroAtt8 != null && (
              <div className={styles.heroStat}>
                <div className={styles.heroStatNumber}>{heroAtt8.toFixed(1)}</div>
                <div className={styles.heroStatLabel}>Attainment 8 score</div>
                {heroAtt8Nat != null && (
                  <DeltaChip value={heroAtt8} baseline={heroAtt8Nat} unit="pts" suffix="vs national" />
                )}
              </div>
            )}

            {ofsted && (
              <div className={styles.heroStat}>
                <div className={`${styles.heroStatNumberSerif} ${styles[`tone-${ofstedHeroChip.tone}`]}`}>
                  {ofstedHeroChip.state === 'oeif'
                    ? ofstedHeroChip.title.replace(/^Ofsted\s+/, '')
                    : ofstedHeroChip.state === 'reportCard'
                      ? 'Report Card'
                      : '—'}
                </div>
                <div className={styles.heroStatLabel}>{ofstedHeroChip.subtitle}</div>
                {ofstedHeroChip.detail && (
                  <div className={styles.heroStatFoot}>{ofstedHeroChip.detail}</div>
                )}
              </div>
            )}

            {admissions?.first_preference_offer_pct != null && (
              <div className={styles.heroStat}>
                <div className={styles.heroStatNumber}>
                  {Math.round(admissions.first_preference_offer_pct)}%
                </div>
                <div className={styles.heroStatLabel}>First-choice offer rate</div>
                {admissions.oversubscribed && (
                  <div className={styles.heroStatFoot}>Oversubscribed</div>
                )}
              </div>
            )}
          </div>
        )}

        {heroAcademicYear && (
          <p className={styles.heroDataNote}>Latest data: {heroAcademicYear}</p>
        )}
      </header>

      {/* ── Sticky section navigation ─────────────────────── */}
      <nav className={styles.tabNav} aria-label="Page sections">
        <div className={styles.tabNavInner}>
          <button onClick={() => router.back()} className={styles.backBtn}>← Back</button>
          {navItems.length > 0 && <div className={styles.tabNavDivider} />}
          {navItems.map(({ id, label }) => (
            <a
              key={id}
              href={`#${id}`}
              className={`${styles.tabBtn}${activeSection === id ? ` ${styles.tabBtnActive}` : ''}`}
            >
              {label}
            </a>
          ))}
        </div>
      </nav>

      {/* ── Ofsted ─────────────────────────────────────── */}
      {ofsted && (
        <section id="ofsted" className={styles.card}>
          <h2 className={styles.sectionTitle}>
            {ofsted.framework === 'ReportCard' ? 'Ofsted Report Card' : 'Ofsted Rating'}
            {ofsted.inspection_date && (
              <span className={styles.ofstedDate}>
                {' '}Inspected {new Date(ofsted.inspection_date).toLocaleDateString('en-GB', { day: 'numeric', month: 'long', year: 'numeric' })}
              </span>
            )}
            <a
              href={`https://reports.ofsted.gov.uk/provider/21/${schoolInfo.urn}`}
              target="_blank"
              rel="noopener noreferrer"
              className={styles.ofstedReportLink}
            >
              Full report ↗
            </a>
          </h2>
          {ofsted.framework === 'ReportCard' ? (
            <>
              <p className={styles.ofstedDisclaimer}>
                From November 2025, Ofsted replaced single overall grades with Report Cards rating schools across several areas.
              </p>
              <div className={styles.metricsGrid}>
                {ofsted.rc_safeguarding_met != null && (
                  <div className={styles.metricCard}>
                    <div className={styles.metricLabel}>Safeguarding</div>
                    <div className={`${styles.metricValue} ${ofsted.rc_safeguarding_met ? styles.safeguardingMet : styles.safeguardingNotMet}`}>
                      {ofsted.rc_safeguarding_met ? 'Met' : 'Not met'}
                    </div>
                  </div>
                )}
                {RC_CATEGORIES.filter(({ key }) => key !== 'rc_early_years' || ofsted[key] != null).map(({ key, label }) => {
                  const value = ofsted[key] as number | null;
                  return value != null ? (
                    <div key={key} className={styles.metricCard}>
                      <div className={styles.metricLabel}>{label}</div>
                      <div className={`${styles.metricValue} ${styles[`rcGrade${value}`]}`}>
                        {RC_LABELS[value]}
                      </div>
                    </div>
                  ) : null;
                })}
              </div>
            </>
          ) : ofsted.overall_effectiveness ? (
            <>
              <div className={styles.ofstedHeader}>
                <span className={`${styles.ofstedGrade} ${styles[`ofstedGrade${ofsted.overall_effectiveness}`]}`}>
                  {OFSTED_LABELS[ofsted.overall_effectiveness]}
                </span>
                {ofsted.previous_overall != null &&
                  ofsted.previous_overall !== ofsted.overall_effectiveness && (
                  <span className={styles.ofstedPrevious}>
                    Previously: {OFSTED_LABELS[ofsted.previous_overall]}
                  </span>
                )}
              </div>
              <p className={styles.ofstedDisclaimer}>
                From September 2024, Ofsted no longer makes an overall effectiveness judgement in inspections.
              </p>
              {oeifAllSameGrade ? (
                <p className={styles.ofstedAllSame}>
                  Rated <strong>{OFSTED_LABELS[ofsted.overall_effectiveness]}</strong> across all inspected areas — Quality of Teaching, Behaviour, Pupils&apos; Development and Leadership.
                </p>
              ) : (
                <div className={styles.metricsGrid}>
                  {[
                    { label: 'Quality of Teaching', value: ofsted.quality_of_education },
                    { label: 'Behaviour in School', value: ofsted.behaviour_attitudes },
                    { label: 'Pupils\' Wider Development', value: ofsted.personal_development },
                    { label: 'School Leadership', value: ofsted.leadership_management },
                    ...(ofsted.early_years_provision != null
                      ? [{ label: 'Early Years (Reception)', value: ofsted.early_years_provision }]
                      : []),
                  ].map(({ label, value }) => value != null && (
                    <div key={label} className={styles.metricCard}>
                      <div className={styles.metricLabel}>{label}</div>
                      <div className={`${styles.metricValue} ${styles[`ofstedGrade${value}`]}`}>
                        {OFSTED_LABELS[value]}
                      </div>
                    </div>
                  ))}
                </div>
              )}
            </>
          ) : (
            <>
              <p className={styles.sectionSubtitle}>
                From September 2024, Ofsted no longer gives a single overall grade.
              </p>
              <div className={styles.metricsGrid}>
                {[
                  { label: 'Quality of Education', value: ofsted.quality_of_education },
                  { label: 'Behaviour & Attitudes', value: ofsted.behaviour_attitudes },
                  { label: 'Personal Development', value: ofsted.personal_development },
                  { label: 'Leadership & Management', value: ofsted.leadership_management },
                ].filter(({ value }) => value != null).map(({ label, value }) => (
                  <div key={label} className={styles.metricCard}>
                    <div className={styles.metricLabel}>{label}</div>
                    <div className={`${styles.metricValue} ${styles[`ofstedGrade${value}`]}`}>
                      {OFSTED_LABELS[value!]}
                    </div>
                  </div>
                ))}
              </div>
            </>
          )}
          {hasParents && (
            <p className={styles.parentRecommendLine}>
              <strong>{Math.round(parentView!.q_recommend_pct!)}%</strong> of parents would recommend this school ({parentView!.total_responses!.toLocaleString()} responses)
            </p>
          )}
        </section>
      )}

      {/* ── Parent View ────────────────────────────────── */}
      {hasParents && parentView && (
        <section id="parents" className={styles.card}>
          <h2 className={styles.sectionTitle}>
            What Parents Say
            <span className={styles.responseBadge}>
              {parentView.total_responses!.toLocaleString()} responses
            </span>
          </h2>
          <p className={styles.sectionSubtitle}>
            From the Ofsted Parent View survey — parents share their experience of this school.
          </p>
          <div className={styles.parentViewGrid}>
            {[
              { label: 'Would recommend this school', pct: parentView.q_recommend_pct },
              { label: 'My child is happy here', pct: parentView.q_happy_pct },
              { label: 'My child feels safe here', pct: parentView.q_safe_pct },
              { label: 'Teaching is good', pct: parentView.q_teaching_pct },
              { label: 'My child makes good progress', pct: parentView.q_progress_pct },
              { label: 'School looks after pupils\' wellbeing', pct: parentView.q_wellbeing_pct },
              { label: 'Behaviour is well managed', pct: parentView.q_behaviour_pct },
              { label: 'School deals well with bullying', pct: parentView.q_bullying_pct },
              { label: 'Communicates well with parents', pct: parentView.q_communication_pct },
            ].filter(q => q.pct != null).map(({ label, pct }) => (
              <div key={label} className={styles.parentViewRow}>
                <span className={styles.parentViewLabel}>{label}</span>
                <div className={styles.parentViewBar}>
                  <div className={styles.parentViewFill} style={{ width: `${pct}%` }} />
                </div>
                <span className={styles.parentViewPct}>{Math.round(pct!)}%</span>
              </div>
            ))}
          </div>
        </section>
      )}

      {/* ── GCSE Results ───────────────────────────────── */}
      {hasResults && latestResults && (
        <section id="gcse" className={styles.card}>
          <h2 className={styles.sectionTitle}>
            GCSE Results ({formatAcademicYear(latestResults.year)})
          </h2>
          <p className={styles.sectionSubtitle}>
            GCSE results for Year 11 pupils. National averages shown for comparison.
          </p>

          {p8Suspended && (
            <div className={styles.p8Banner}>
              Progress 8 scores for 2024/25 are not used for accountability purposes following the KS2 assessment disruption. Treat with caution.
            </div>
          )}

          {/* Hero stat cards — top GCSE metrics */}
          <div className={styles.heroStatGrid}>
            {latestResults.attainment_8_score != null && (
              <div className={styles.heroStatCard}>
                <div className={styles.heroStatLabel}>
                  Attainment 8 score
                  <MetricTooltip metricKey="attainment_8_score" />
                </div>
                <div className={styles.heroStatValue}>
                  {latestResults.attainment_8_score.toFixed(1)}
                  {secondaryAvg.attainment_8_score != null && (
                    <DeltaChip
                      value={latestResults.attainment_8_score}
                      baseline={secondaryAvg.attainment_8_score}
                      unit="pts"
                      size="sm"
                    />
                  )}
                </div>
                {secondaryAvg.attainment_8_score != null && (
                  <div className={styles.heroStatHint}>National avg: {secondaryAvg.attainment_8_score.toFixed(1)}</div>
                )}
              </div>
            )}
            {latestResults.progress_8_score != null && (
              <div className={styles.heroStatCard}>
                <div className={styles.heroStatLabel}>
                  Progress 8 score
                  <MetricTooltip metricKey="progress_8_score" />
                </div>
                <div className={`${styles.heroStatValue} ${progressClass(latestResults.progress_8_score, styles)}`}>
                  {formatProgress(latestResults.progress_8_score)}
                </div>
                {(latestResults.progress_8_lower_ci != null && latestResults.progress_8_upper_ci != null) ? (
                  <div className={styles.heroStatHint}>
                    CI: {latestResults.progress_8_lower_ci.toFixed(2)} to {latestResults.progress_8_upper_ci.toFixed(2)}
                  </div>
                ) : (
                  <div className={styles.heroStatHint}>National baseline: 0.0</div>
                )}
              </div>
            )}
            {latestResults.english_maths_strong_pass_pct != null && (
              <div className={styles.heroStatCard}>
                <div className={styles.heroStatLabel}>
                  English &amp; Maths Grade 5+
                  <MetricTooltip metricKey="english_maths_strong_pass_pct" />
                </div>
                <div className={styles.heroStatValue}>
                  {formatPercentage(latestResults.english_maths_strong_pass_pct)}
                  {secondaryAvg.english_maths_strong_pass_pct != null && (
                    <DeltaChip
                      value={latestResults.english_maths_strong_pass_pct}
                      baseline={secondaryAvg.english_maths_strong_pass_pct}
                      unit="pts"
                      size="sm"
                    />
                  )}
                </div>
                {secondaryAvg.english_maths_strong_pass_pct != null && (
                  <div className={styles.heroStatHint}>National avg: {secondaryAvg.english_maths_strong_pass_pct.toFixed(0)}%</div>
                )}
              </div>
            )}
            {latestResults.english_maths_standard_pass_pct != null && (
              <div className={styles.heroStatCard}>
                <div className={styles.heroStatLabel}>
                  English &amp; Maths Grade 4+
                  <MetricTooltip metricKey="english_maths_standard_pass_pct" />
                </div>
                <div className={styles.heroStatValue}>
                  {formatPercentage(latestResults.english_maths_standard_pass_pct)}
                  {secondaryAvg.english_maths_standard_pass_pct != null && (
                    <DeltaChip
                      value={latestResults.english_maths_standard_pass_pct}
                      baseline={secondaryAvg.english_maths_standard_pass_pct}
                      unit="pts"
                      size="sm"
                    />
                  )}
                </div>
                {secondaryAvg.english_maths_standard_pass_pct != null && (
                  <div className={styles.heroStatHint}>National avg: {secondaryAvg.english_maths_standard_pass_pct.toFixed(0)}%</div>
                )}
              </div>
            )}
          </div>

          {/* Attainment 8 visual bar (0–80 scale) */}
          {latestResults.attainment_8_score != null && (
            <div className={styles.att8Viz}>
              <div className={styles.att8VizLabel}>Attainment 8 — school vs national</div>
              <div className={styles.att8VizTrack}>
                <div
                  className={styles.att8VizFill}
                  style={{ width: `${Math.min((latestResults.attainment_8_score / 80) * 100, 100)}%` }}
                />
                {secondaryAvg.attainment_8_score != null && (
                  <div
                    className={styles.att8VizNatLine}
                    style={{ left: `${(secondaryAvg.attainment_8_score / 80) * 100}%` }}
                  >
                    <div className={styles.att8VizNatPill}>
                      Nat avg {secondaryAvg.attainment_8_score.toFixed(1)}
                    </div>
                  </div>
                )}
              </div>
              <div className={styles.att8VizTicks}>
                <span>0</span><span>20</span><span>40</span><span>60</span><span>80</span>
              </div>
            </div>
          )}

          {/* Progress 8 number line with CI */}
          {latestResults.progress_8_score != null && !p8Suspended && (
            <div className={styles.p8Viz}>
              <div className={styles.p8VizLabel}>Progress 8 — relative to national baseline (0)</div>
              {(() => {
                const p8 = latestResults.progress_8_score!;
                const lo = latestResults.progress_8_lower_ci ?? p8;
                const hi = latestResults.progress_8_upper_ci ?? p8;
                const range = 6; // −3 to +3
                const toX = (v: number) => `${Math.min(Math.max(((v + 3) / range) * 100, 0), 100)}%`;
                return (
                  <div className={styles.p8VizTrack}>
                    {/* CI band */}
                    <div
                      className={styles.p8VizCi}
                      style={{ left: toX(lo), width: `calc(${toX(hi)} - ${toX(lo)})` }}
                    />
                    {/* Zero line */}
                    <div className={styles.p8VizZero} style={{ left: toX(0) }} />
                    {/* Score dot */}
                    <div
                      className={`${styles.p8VizDot} ${p8 < 0 ? styles.p8VizDotNeg : ''}`}
                      style={{ left: toX(p8) }}
                    />
                  </div>
                );
              })()}
              <div className={styles.p8VizTicks}>
                <span>−3</span><span>−2</span><span>−1</span><span>0</span><span>+1</span><span>+2</span><span>+3</span>
              </div>
            </div>
          )}

          {/* Progress 8 component breakdown */}
          {(latestResults.progress_8_english != null || latestResults.progress_8_maths != null ||
            latestResults.progress_8_ebacc != null || latestResults.progress_8_open != null) && (
            <>
              <h3 className={styles.subSectionTitle}>Attainment 8 Components (Progress 8 contribution)</h3>
              <div className={styles.metricTable}>
                {[
                  { label: 'English', val: latestResults.progress_8_english },
                  { label: 'Maths', val: latestResults.progress_8_maths },
                  { label: 'EBacc subjects', val: latestResults.progress_8_ebacc },
                  { label: 'Open (other GCSEs)', val: latestResults.progress_8_open },
                ].filter(r => r.val != null).map(({ label, val }) => (
                  <div key={label} className={styles.metricRow}>
                    <span className={styles.metricName}>{label}</span>
                    <span className={`${styles.metricValue} ${progressClass(val, styles)}`}>
                      {formatProgress(val!)}
                    </span>
                  </div>
                ))}
              </div>
            </>
          )}

          {/* EBacc */}
          {(latestResults.ebacc_entry_pct != null || latestResults.ebacc_standard_pass_pct != null) && (
            <>
              <h3 className={styles.subSectionTitle} style={{ marginTop: '1rem' }}>
                English Baccalaureate (EBacc)
                <MetricTooltip metricKey="ebacc_entry_pct" />
              </h3>
              <div className={styles.metricTable}>
                {latestResults.ebacc_entry_pct != null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Pupils entered for EBacc</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.ebacc_entry_pct)}</span>
                  </div>
                )}
                {latestResults.ebacc_standard_pass_pct != null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>EBacc Grade 4+</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.ebacc_standard_pass_pct)}</span>
                  </div>
                )}
                {latestResults.ebacc_strong_pass_pct != null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>EBacc Grade 5+</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.ebacc_strong_pass_pct)}</span>
                  </div>
                )}
                {latestResults.ebacc_avg_score != null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>EBacc average point score</span>
                    <span className={styles.metricValue}>{latestResults.ebacc_avg_score.toFixed(2)}</span>
                  </div>
                )}
              </div>
            </>
          )}

        </section>
      )}

      {/* ── Admissions ─────────────────────────────────── */}
      {admissions && (
        <section id="admissions" className={styles.card}>
          <h2 className={styles.sectionTitle}>Admissions</h2>

          {admissionsTag && (
            <div className={`${styles.admissionsTypeBadge} ${admissionsTag === 'Selective' ? styles.admissionsSelective : styles.admissionsFaith}`}>
              <strong>{admissionsTag}</strong>{' '}
              {admissionsTag === 'Selective'
                ? '— Entry to this school is by selective examination (e.g. 11+).'
                : `— This school has a faith-based admissions priority (${schoolInfo.religious_denomination}).`}
            </div>
          )}

          <div className={styles.metricsGrid}>
            {admissions.places_offered != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Year 7 places offered</div>
                <div className={styles.metricValue}>{admissions.places_offered}</div>
              </div>
            )}
            {admissions.total_applications != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Total applications</div>
                <div className={styles.metricValue}>{admissions.total_applications.toLocaleString()}</div>
              </div>
            )}
            {admissions.first_preference_applications != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>1st preference applications</div>
                <div className={styles.metricValue}>{admissions.first_preference_applications.toLocaleString()}</div>
              </div>
            )}
            {admissions.first_preference_offer_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Families who got their first choice</div>
                <div className={styles.metricValue}>{formatPercentage(admissions.first_preference_offer_pct)}</div>
              </div>
            )}
          </div>
          {admissions.oversubscribed != null && (
            <div className={`${styles.admissionsBadge} ${admissions.oversubscribed ? styles.statusWarn : styles.statusGood}`}>
              {admissions.oversubscribed
                ? '⚠ Applications exceeded places last year'
                : '✓ Places were available last year'}
            </div>
          )}

          <p className={styles.sectionSubtitle} style={{ marginTop: '1rem' }}>
            Historical distance cut-off data is not available for this school. Contact the admissions authority for oversubscription criteria details.
          </p>

          {hasSixthForm && (
            <div className={styles.sixthFormNote}>
              This school has a sixth form (Post-16 provision). Post-16 destination data coming soon.
            </div>
          )}
        </section>
      )}

      {/* ── Wellbeing ──────────────────────────────────── */}
      {hasWellbeing && (
        <section id="wellbeing" className={styles.card}>
          <h2 className={styles.sectionTitle}>Wellbeing &amp; Context</h2>

          {/* SEN */}
          {(latestResults?.sen_support_pct != null || latestResults?.sen_ehcp_pct != null) && (
            <>
              <h3 className={styles.subSectionTitle}>Special Educational Needs (SEN)</h3>
              <div className={styles.heroStatGrid}>
                {latestResults?.sen_support_pct != null && (
                  <div className={styles.heroStatCard}>
                    <div className={styles.heroStatLabel}>
                      SEN support
                      <MetricTooltip metricKey="sen_support_pct" />
                    </div>
                    <div className={styles.heroStatValue}>{formatPercentage(latestResults.sen_support_pct)}</div>
                    <div className={styles.heroStatHint}>Without an EHCP</div>
                  </div>
                )}
                {latestResults?.sen_ehcp_pct != null && (
                  <div className={styles.heroStatCard}>
                    <div className={styles.heroStatLabel}>
                      Pupils with EHCP
                      <MetricTooltip metricKey="sen_ehcp_pct" />
                    </div>
                    <div className={styles.heroStatValue}>{formatPercentage(latestResults.sen_ehcp_pct)}</div>
                    <div className={styles.heroStatHint}>Education, Health and Care Plan</div>
                  </div>
                )}
                {(() => {
                  const total = census?.total_pupils ?? schoolInfo.total_pupils ?? latestResults?.total_pupils ?? null;
                  if (total == null) return null;
                  const female = census?.female_pupils ?? null;
                  const male = census?.male_pupils ?? null;
                  const isMixed = schoolInfo.gender === 'Mixed' || schoolInfo.gender == null;
                  const hasSplit = isMixed && female != null && male != null && female + male > 0;
                  const sum = hasSplit ? female! + male! : 0;
                  const girlsPct = hasSplit ? Math.round((female! / sum) * 100) : 0;
                  const boysPct = hasSplit ? 100 - girlsPct : 0;
                  return (
                    <div className={styles.heroStatCard}>
                      <div className={styles.heroStatLabel}>Total pupils</div>
                      <div className={styles.heroStatValue}>{total.toLocaleString()}</div>
                      {hasSplit && (
                        <>
                          <div
                            className={styles.genderBar}
                            role="img"
                            aria-label={`Gender split: ${girlsPct}% girls, ${boysPct}% boys`}
                          >
                            <span className={styles.genderBarGirls} style={{ width: `${girlsPct}%` }} />
                            <span className={styles.genderBarBoys} style={{ width: `${boysPct}%` }} />
                          </div>
                          <div className={styles.genderSplitHint}>
                            <span className={styles.genderSplitGirls}>{girlsPct}% girls</span>
                            <span className={styles.genderSplitSep}> · </span>
                            <span className={styles.genderSplitBoys}>{boysPct}% boys</span>
                          </div>
                        </>
                      )}
                      {schoolInfo.capacity != null && !hasSplit && (
                        <div className={styles.heroStatHint}>Capacity: {schoolInfo.capacity}</div>
                      )}
                    </div>
                  );
                })()}
              </div>
            </>
          )}

          {/* Deprivation */}
          {hasDeprivation && deprivation && (
            <>
              <h3 className={styles.subSectionTitle} style={{ marginTop: '1.25rem' }}>
                Local Area Context
                <MetricTooltip metricKey="idaci_decile" />
              </h3>
              <div className={styles.deprivationDots}>
                {Array.from({ length: 10 }, (_, i) => (
                  <div
                    key={i}
                    className={`${styles.deprivationDot} ${i < deprivation.idaci_decile! ? styles.deprivationDotFilled : ''}`}
                    title={`Decile ${i + 1}`}
                  />
                ))}
              </div>
              <div className={styles.deprivationScaleLabel}>
                <span>Most deprived</span>
                <span>Least deprived</span>
              </div>
              <p className={styles.deprivationDesc}>{deprivationDesc(deprivation.idaci_decile!)}</p>
            </>
          )}
        </section>
      )}

      {/* ── Location ───────────────────────────────────── */}
      {hasLocation && (
        <section id="location" className={styles.card}>
          <h2 className={styles.sectionTitle}>Location</h2>
          <div className={styles.mapContainer}>
            <SchoolMap
              schools={[schoolInfo]}
              center={[schoolInfo.latitude!, schoolInfo.longitude!]}
              zoom={15}
            />
          </div>
        </section>
      )}

      {/* ── Finances ───────────────────────────────────── */}
      {hasFinance && finance && (
        <section id="finances" className={styles.card}>
          <h2 className={styles.sectionTitle}>School Finances ({formatAcademicYear(finance.year)})</h2>
          <p className={styles.sectionSubtitle}>
            Per-pupil spending shows how much the school has to spend on each child&apos;s education.
          </p>
          <div className={styles.metricsGrid}>
            <div className={styles.metricCard}>
              <div className={styles.metricLabel}>Total spend per pupil per year</div>
              <div className={styles.metricValue}>£{Math.round(finance.per_pupil_spend!).toLocaleString()}</div>
              <div className={styles.metricHint}>How much the school has to spend on each pupil annually</div>
            </div>
            {finance.teacher_cost_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Share of budget spent on teachers</div>
                <div className={styles.metricValue}>{finance.teacher_cost_pct.toFixed(1)}%</div>
              </div>
            )}
            {finance.staff_cost_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Share of budget spent on all staff</div>
                <div className={styles.metricValue}>{finance.staff_cost_pct.toFixed(1)}%</div>
              </div>
            )}
            {finance.premises_cost_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Share of budget spent on premises</div>
                <div className={styles.metricValue}>{finance.premises_cost_pct.toFixed(1)}%</div>
              </div>
            )}
          </div>
        </section>
      )}

      {/* ── History table ──────────────────────────────── */}
      {yearlyData.length > 1 && (
        <section id="history" className={styles.card}>
          <h2 className={styles.sectionTitle}>Historical Results</h2>
          {yearlyData.length > 0 && (
            <>
              <h3 className={styles.subSectionTitle} style={{ marginTop: '1.25rem' }}>Results Over Time</h3>
              <div className={styles.chartContainer}>
                <PerformanceChart
                  data={yearlyData}
                  schoolName={schoolInfo.school_name}
                  isSecondary={true}
                  nationalAtt8Avg={heroAtt8Nat}
                  nationalByYear={nationalAvg?.by_year}
                />
              </div>
            </>
          )}
          <details className={styles.historyDisclosure}>
            <summary className={styles.historyToggle}>View raw year-by-year data</summary>
            <div className={styles.tableWrapper}>
              <table className={styles.dataTable}>
                <thead>
                  <tr>
                    <th>Year</th>
                    <th>Attainment 8</th>
                    <th>Progress 8</th>
                    <th>Eng &amp; Maths 4+</th>
                    <th>EBacc entry %</th>
                  </tr>
                </thead>
                <tbody>
                  {yearlyData.map((result) => (
                    <tr key={result.year}>
                      <td className={styles.yearCell}>{formatAcademicYear(result.year)}</td>
                      <td>{result.attainment_8_score != null ? result.attainment_8_score.toFixed(1) : '-'}</td>
                      <td>{result.progress_8_score != null ? formatProgress(result.progress_8_score) : '-'}</td>
                      <td>{result.english_maths_standard_pass_pct != null ? formatPercentage(result.english_maths_standard_pass_pct) : '-'}</td>
                      <td>{result.ebacc_entry_pct != null ? formatPercentage(result.ebacc_entry_pct) : '-'}</td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>
          </details>
        </section>
      )}
    </div>
  );
}