/**
 * HomeView Component
 * Client-side home page view with search and filtering
 */

'use client';

import React, { useState, useEffect, useRef, useCallback } from 'react';
import { useSearchParams, useRouter, usePathname } from 'next/navigation';
import { FilterBar } from './FilterBar';
import { SchoolRow } from './SchoolRow';
import { SecondarySchoolRow } from './SecondarySchoolRow';
import { SchoolMap } from './SchoolMap';
import { EmptyState } from './EmptyState';
import { HeroIllustration } from './Illustration';
import { useComparisonContext } from '@/context/ComparisonContext';
import { fetchSchools, fetchLAaverages, fetchNationalAverages } from '@/lib/api';
import type { SchoolsResponse, Filters, School } from '@/lib/types';
import { schoolUrl, buildOfstedListBadge } from '@/lib/utils';
import { track } from '@/lib/analytics';
import styles from './HomeView.module.css';

interface HomeViewProps {
  initialSchools: SchoolsResponse;
  filters: Filters;
  totalSchools?: number | null;
  // Slot props for static markup the server pre-renders so it stays out of
  // the client bundle. Server passes null when the landing sections shouldn't
  // show (e.g. an active search).
  howItWorks?: React.ReactNode;
  editorial?: React.ReactNode;
}

function daysUntil(month: number, day: number): number {
  const today = new Date();
  today.setHours(0, 0, 0, 0);
  const y = today.getFullYear();
  let target = new Date(y, month - 1, day);
  if (target < today) target = new Date(y + 1, month - 1, day);
  return Math.round((target.getTime() - today.getTime()) / 86_400_000);
}

function formatCountdownDate(month: number, day: number): string {
  const today = new Date();
  today.setHours(0, 0, 0, 0);
  const y = today.getFullYear();
  let target = new Date(y, month - 1, day);
  if (target < today) target = new Date(y + 1, month - 1, day);
  return target.toLocaleDateString('en-GB', { weekday: 'short', day: 'numeric', month: 'long', year: 'numeric' });
}

interface CountdownChipData {
  type: 'deadline' | 'offer';
  track: string;
  milestone: string;
  month: number;
  day: number;
}

const ADMISSIONS_CHIPS: CountdownChipData[] = [
  { type: 'offer',    track: 'Primary · Offer Day',        milestone: 'Primary National Offer Day',     month: 4,  day: 16 },
  { type: 'deadline', track: 'Secondary · Deadline',       milestone: 'Secondary applications close',   month: 10, day: 31 },
  { type: 'deadline', track: 'Primary · Deadline',         milestone: 'Primary applications close',     month: 1,  day: 15 },
  { type: 'offer',    track: 'Secondary · Offer Day',      milestone: 'Secondary National Offer Day',   month: 3,  day: 1  },
];

/* ── Value-prop icons ──────────────────────────────────────────────────────
   Rounded 2px line icons on a 24px grid, inheriting the chip's colour. Kept
   local because they exist for this one row and nothing else. */

const ICON_PROPS = {
  viewBox: '0 0 24 24',
  width: 21,
  height: 21,
  fill: 'none',
  stroke: 'currentColor',
  strokeWidth: 2,
  strokeLinecap: 'round',
  strokeLinejoin: 'round',
  'aria-hidden': true,
} as const;

function ShieldCheckIcon() {
  return (
    <svg {...ICON_PROPS}>
      <path d="M12 3 4 6v6c0 4.5 3.2 8.2 8 9 4.8-.8 8-4.5 8-9V6l-8-3Z" />
      <path d="m9 12 2 2 4-4" />
    </svg>
  );
}

function BarsIcon() {
  return (
    <svg {...ICON_PROPS}>
      <path d="M4 20V10M10 20V4M16 20v-7M22 20H2" />
    </svg>
  );
}

function HeartIcon() {
  return (
    <svg {...ICON_PROPS}>
      <path d="M12 20s-7-4.4-7-9.2A3.9 3.9 0 0 1 12 8a3.9 3.9 0 0 1 7 2.8C19 15.6 12 20 12 20Z" />
    </svg>
  );
}

function CalendarIcon() {
  return (
    <svg {...ICON_PROPS}>
      <rect x="3" y="5" width="18" height="16" rx="2" />
      <path d="M3 10h18M8 3v4M16 3v4" />
    </svg>
  );
}

interface ValueProp {
  icon: React.ReactNode;
  tintClass: string;
  title: string;
  body: string;
}

/*
 * The brand guideline's fourth value prop is "Save & revisit" (shortlisting /
 * favourites). That feature does not exist in this product, so it is
 * deliberately replaced by the admissions-deadline prop below — which is real,
 * and is backed by the countdown strip further down this page.
 */
const VALUE_PROPS: ValueProp[] = [
  {
    icon: <ShieldCheckIcon />,
    tintClass: styles.propIconTrust,
    title: 'Official & trusted',
    body: 'Every figure comes from DfE performance tables and Ofsted.',
  },
  {
    icon: <BarsIcon />,
    tintClass: styles.propIconCompare,
    title: 'Easy to compare',
    body: 'Up to three schools side by side, on the measures that matter.',
  },
  {
    icon: <HeartIcon />,
    tintClass: styles.propIconContext,
    title: 'Beyond the numbers',
    body: 'Class sizes, SEN support and local context, not just results.',
  },
  {
    icon: <CalendarIcon />,
    tintClass: styles.propIconDeadline,
    title: 'Never miss a deadline',
    body: 'Application and offer dates for both primary and secondary.',
  },
];

export function HomeView({ initialSchools, filters, totalSchools, howItWorks, editorial }: HomeViewProps) {
  const searchParams = useSearchParams();
  const router = useRouter();
  const pathname = usePathname();
  const { addSchool, removeSchool, selectedSchools } = useComparisonContext();
  const [resultsView, setResultsView] = useState<'list' | 'map'>('list');
  const [selectedMapSchool, setSelectedMapSchool] = useState<School | null>(null);
  const sortOrder = searchParams.get('sort') || 'default';
  const [allSchools, setAllSchools] = useState<School[]>(initialSchools.schools);
  const [currentPage, setCurrentPage] = useState(initialSchools.page);
  const [hasMore, setHasMore] = useState(initialSchools.total_pages > 1);
  const [isLoadingMore, setIsLoadingMore] = useState(false);
  const [laAverages, setLaAverages] = useState<Record<string, number>>({});
  const [nationalAvgRwm, setNationalAvgRwm] = useState<number | null>(null);
  const [mapSchools, setMapSchools] = useState<School[]>([]);
  const [isLoadingMap, setIsLoadingMap] = useState(false);
  const prevSearchParamsRef = useRef(searchParams.toString());
  const mapParamsRef = useRef<string>('');
  const [geoState, setGeoState] = useState<'idle' | 'requesting' | 'error'>('idle');
  const [geoError, setGeoError] = useState<string | null>(null);
  const [sortedChips, setSortedChips] = useState<Array<{ chip: CountdownChipData; days: number | null }>>(
    ADMISSIONS_CHIPS.map(c => ({ chip: c, days: null }))
  );

  const hasSearch = searchParams.get('search') || searchParams.get('postcode');
  const isLocationSearch = !!searchParams.get('postcode');
  const isSearchActive = !!(hasSearch || searchParams.get('local_authority') || searchParams.get('school_type'));
  const currentPhase = searchParams.get('phase') || '';
  const secondaryCount = allSchools.filter(s => s.attainment_8_score != null).length;
  const primaryCount = allSchools.filter(s => s.rwm_expected_pct != null).length;
  const isSecondaryView = currentPhase.toLowerCase().includes('secondary')
    || (!currentPhase && secondaryCount > primaryCount);
  const isMixedView = primaryCount > 0 && secondaryCount > 0 && !currentPhase;

  // Reset pagination and map cache when search params change
  useEffect(() => {
    const newParamsStr = searchParams.toString();
    if (newParamsStr !== prevSearchParamsRef.current) {
      prevSearchParamsRef.current = newParamsStr;
      mapParamsRef.current = '';  // allow map to re-fetch for new search
      setAllSchools(initialSchools.schools);
      setCurrentPage(initialSchools.page);
      setHasMore(initialSchools.total_pages > 1);
      setMapSchools([]);
    }
  }, [searchParams, initialSchools]);

  // Close bottom sheet if we change views or search
  useEffect(() => {
    setSelectedMapSchool(null);
  }, [resultsView, searchParams]);

  // Fetch all schools within radius when map view is active.
  // Guard with a ref so toggling back to map never re-fetches the same params.
  useEffect(() => {
    if (resultsView !== 'map' || !isLocationSearch) return;
    const paramsKey = searchParams.toString();
    if (paramsKey === mapParamsRef.current) return;
    mapParamsRef.current = paramsKey;
    setIsLoadingMap(true);
    const params: Record<string, any> = {};
    searchParams.forEach((value, key) => { params[key] = value; });
    params.page = 1;
    params.page_size = 500;
    fetchSchools(params, { cache: 'no-store' })
      .then(r => setMapSchools(r.schools))
      .catch(() => setMapSchools(initialSchools.schools))
      .finally(() => setIsLoadingMap(false));
  }, [resultsView, searchParams]);

  // Fetch LA averages when secondary or mixed schools are visible
  useEffect(() => {
    if (!isSecondaryView && !isMixedView) return;
    fetchLAaverages({ cache: 'force-cache' })
      .then(data => setLaAverages(data.secondary.attainment_8_by_la))
      .catch(() => {});
  }, [isSecondaryView, isMixedView]);

  // Fetch national averages (supplementary — never blocks render)
  useEffect(() => {
    fetchNationalAverages()
      .then(data => setNationalAvgRwm(data.primary?.rwm_expected_pct ?? null))
      .catch(() => {});
  }, []);

  // Compute admissions countdown days client-side and sort soonest-first to avoid SSR mismatch
  useEffect(() => {
    const withDays = ADMISSIONS_CHIPS.map(c => ({ chip: c, days: daysUntil(c.month, c.day) }));
    withDays.sort((a, b) => (a.days ?? Infinity) - (b.days ?? Infinity));
    setSortedChips(withDays);
  }, []);

  const handleLoadMore = async () => {
    if (isLoadingMore || !hasMore) return;
    track('results_load_more', { next_page: currentPage + 1 });
    setIsLoadingMore(true);
    try {
      const params: Record<string, any> = {};
      searchParams.forEach((value, key) => { params[key] = value; });
      params.page = currentPage + 1;
      params.page_size = initialSchools.page_size;
      const response = await fetchSchools(params, { cache: 'no-store' });
      setAllSchools(prev => [...prev, ...response.schools]);
      setCurrentPage(response.page);
      setHasMore(response.page < response.total_pages);
    } catch {
      // silently ignore
    } finally {
      setIsLoadingMore(false);
    }
  };

  const handleNearMe = useCallback(() => {
    if (!navigator.geolocation) {
      track('near_me_used', { outcome: 'unsupported' });
      setGeoState('error');
      setGeoError('Geolocation is not supported by your browser. Enter a postcode instead.');
      return;
    }
    setGeoState('requesting');
    setGeoError(null);
    navigator.geolocation.getCurrentPosition(
      async (position) => {
        const { latitude, longitude } = position.coords;
        try {
          const res = await fetch(
            `https://api.postcodes.io/postcodes?lon=${longitude}&lat=${latitude}&limit=1`
          );
          const data = await res.json();
          if (data.result && data.result.length > 0) {
            const postcode = data.result[0].postcode as string;
            setGeoState('idle');
            track('near_me_used', { outcome: 'granted' });
            track('search_submitted', { query: postcode, via: 'near_me', has_postcode: true, filters_active: '', filters_count: 0 });
            router.push(`/?postcode=${encodeURIComponent(postcode)}&radius=1`);
          } else {
            track('near_me_used', { outcome: 'no_postcode' });
            setGeoState('error');
            setGeoError('No postcode found near your location. Try entering one above.');
          }
        } catch {
          track('near_me_used', { outcome: 'lookup_error' });
          setGeoState('error');
          setGeoError('Could not look up your location. Please try again.');
        }
      },
      (err) => {
        setGeoState('error');
        if (err.code === err.PERMISSION_DENIED) {
          track('near_me_used', { outcome: 'denied' });
          setGeoError('Location access was denied. Enter a postcode above to find nearby schools.');
        } else {
          track('near_me_used', { outcome: 'error' });
          setGeoError('Could not get your location. Please try again or enter a postcode.');
        }
      },
      { timeout: 10000, maximumAge: 60000 }
    );
  }, [router]);

  const sortedSchools = [...allSchools].sort((a, b) => {
    if (sortOrder === 'rwm_desc') return (b.rwm_expected_pct ?? -Infinity) - (a.rwm_expected_pct ?? -Infinity);
    if (sortOrder === 'rwm_asc') return (a.rwm_expected_pct ?? Infinity) - (b.rwm_expected_pct ?? Infinity);
    if (sortOrder === 'att8_desc') return (b.attainment_8_score ?? -Infinity) - (a.attainment_8_score ?? -Infinity);
    if (sortOrder === 'att8_asc') return (a.attainment_8_score ?? Infinity) - (b.attainment_8_score ?? Infinity);
    if (sortOrder === 'distance') return (a.distance ?? Infinity) - (b.distance ?? Infinity);
    if (sortOrder === 'name_asc') return a.school_name.localeCompare(b.school_name);
    return 0;
  });

  // Empty-results sentinel: track when a search returns nothing.
  useEffect(() => {
    if (!isSearchActive) return;
    if (initialSchools.total !== 0) return;
    track('empty_results', {
      query_length: (searchParams.get('search') || '').length,
      has_postcode: !!searchParams.get('postcode'),
    });
  }, [initialSchools.total, isSearchActive, searchParams]);

  // Wrap addSchool with `from: 'search'` attribution so funnel reports can
  // split which surface drives compare adds.
  const addSchoolFromSearch = useCallback((school: School) => {
    addSchool(school);
    track('compare_school_added', {
      urn: school.urn,
      from: 'search',
      selection_count_after: selectedSchools.length + 1,
    });
  }, [addSchool, selectedSchools.length]);

  return (
    <div className={styles.homeView}>
      {/* Hero: a Sand panel with the proposition and the search on the left and
          the brand landscape bleeding to the panel edge on the right. The
          search lives inside the panel here and above the results elsewhere,
          which is why FilterBar is rendered in two places rather than moved. */}
      {!isSearchActive ? (
        <section className={styles.heroPanel}>
          <div className={styles.heroContent}>
            <span className={styles.heroEyebrow}>
              <span className={styles.heroEyebrowDot} aria-hidden="true" />
              Updated for the 2026/27 admissions round
            </span>
            <h1 className={styles.heroTitle}>
              Find the school where your child will{' '}
              <em className={styles.heroEmph}>flourish.</em>
            </h1>
            <p className={styles.heroDescription}>
              Compare every school in England with clarity and confidence.
              {/* The coverage sentence is the detail a first-time visitor needs
                  but a returning one does not, so it drops away on phones where
                  every line above the fold costs. */}
              <span className={styles.heroDescriptionFull}>
                {' '}Key Stage 2 SATs, GCSE results, Ofsted grades, progress scores
                and admissions data for <strong>24,000+ schools</strong> — side by
                side, in one place.
              </span>
            </p>

            <FilterBar
              filters={filters}
              isHero
              resultFilters={initialSchools.result_filters}
              onNearMe={handleNearMe}
              geoState={geoState}
              geoError={geoError}
            />

            <p className={styles.heroTrust}>
              <span className={styles.heroTrustDots} aria-hidden="true">
                <span className={styles.heroTrustDot} />
                <span className={styles.heroTrustDot} />
                <span className={styles.heroTrustDot} />
              </span>
              Built on official DfE and Ofsted data — 24,000+ schools
            </p>
          </div>

          <div className={styles.heroArt}>
            <HeroIllustration />
          </div>
        </section>
      ) : (
        <FilterBar
          filters={filters}
          isHero={false}
          resultFilters={initialSchools.result_filters}
          onNearMe={handleNearMe}
          geoState={geoState}
          geoError={geoError}
        />
      )}

      {/* Why this site, in four lines. Only on the landing page. */}
      {!isSearchActive && (
        <ul className={styles.valueProps}>
          {VALUE_PROPS.map(({ icon, tintClass, title, body }) => (
            <li key={title} className={styles.valueProp}>
              <span className={`${styles.propIcon} ${tintClass}`}>{icon}</span>
              <div>
                <h2 className={styles.propTitle}>{title}</h2>
                <p className={styles.propBody}>{body}</p>
              </div>
            </li>
          ))}
        </ul>
      )}

      {/* Admissions countdown strip — only on landing page */}
      {!isSearchActive && (
        <section className={styles.admissionsStrip}>
          <div className={styles.stripHeader}>
            <span className={styles.stripLabel}>Key admissions deadlines</span>
            <a href="/admissions" className={styles.stripCta}>Full admissions guide →</a>
          </div>
          <div
            className={styles.countdownRail}
            style={{
              opacity: sortedChips[0]?.days !== null ? 1 : 0,
              transition: 'opacity 0.2s ease',
            }}
          >
            {sortedChips.map(({ chip, days }) => {
              const isUrgent = days !== null && days <= 14;
              const chipClass = [
                styles.countdownChip,
                chip.type === 'deadline' ? styles.countdownChipDeadline : styles.countdownChipOffer,
                isUrgent ? styles.countdownChipUrgent : '',
              ].filter(Boolean).join(' ');
              const trackClass = [
                styles.chipTrack,
                chip.type === 'deadline' ? styles.chipTrackDeadline : styles.chipTrackOffer,
              ].join(' ');
              return (
                <div key={chip.milestone} className={chipClass}>
                  <span className={trackClass}>
                    <span className={styles.chipTrackDot} aria-hidden="true" />
                    {chip.track}
                  </span>
                  <div>
                    <span className={styles.chipDays}>{days === 0 ? 'Today' : (days ?? '—')}</span>
                    {days !== null && days > 0 && <span className={styles.chipDaysUnit}>days</span>}
                  </div>
                  <div className={styles.chipMilestone}>{chip.milestone}</div>
                  <div className={styles.chipDate}>
                    {days !== null ? formatCountdownDate(chip.month, chip.day) : ''}
                  </div>
                </div>
              );
            })}
          </div>
        </section>
      )}

      {/* Secondary discovery — moved below deadlines so the admissions
          countdown (time-sensitive) shows ahead of generic "explore" links. */}
      {!isSearchActive && initialSchools.schools.length === 0 && (
        <div className={styles.exploringRow}>
          <span className={styles.exploringLabel}>Start exploring</span>
          <div className={styles.exploringChips}>
            <a href="/rankings" className={styles.exploringChip}>
              <span className={styles.chipDot} aria-hidden="true" />
              Top-rated primary schools
            </a>
            <a href="/rankings" className={styles.exploringChip}>
              <span className={styles.chipDot} aria-hidden="true" />
              Top-rated secondary schools
            </a>
            <a href="/compare" className={styles.exploringChip}>
              <span className={styles.chipDot} aria-hidden="true" />
              Start a comparison
            </a>
          </div>
        </div>
      )}

      {/* How it works + Editorial — server-rendered slots, only on landing */}
      {!isSearchActive && howItWorks}
      {!isSearchActive && editorial}

      {/* Results Section */}
      <section className={`${styles.results} ${resultsView === 'map' && isLocationSearch ? styles.mapViewResults : ''}`}>
        {!hasSearch && initialSchools.schools.length > 0 && (
          <div className={styles.sectionHeader}>
            <h2>Featured Schools</h2>
            <p className={styles.sectionDescription}>
              Explore schools from across England
            </p>
          </div>
        )}

        {hasSearch && (
          <div className={styles.resultsHeader}>
            <h2 aria-live="polite" aria-atomic="true">
              {isLocationSearch && initialSchools.location_info
                ? `${initialSchools.total.toLocaleString()} school${initialSchools.total !== 1 ? 's' : ''} within ${(initialSchools.location_info.radius / 1.60934).toFixed(1)} miles of ${initialSchools.location_info.postcode}`
                : `${initialSchools.total.toLocaleString()} school${initialSchools.total !== 1 ? 's' : ''} found`
              }
            </h2>
            <div className={styles.resultsHeaderActions}>
              {isLocationSearch && initialSchools.schools.length > 0 && (
                <div className={styles.viewToggle}>
                  <button
                    className={`${styles.viewToggleBtn} ${resultsView === 'list' ? styles.active : ''}`}
                    onClick={() => setResultsView('list')}
                  >
                    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" width="16" height="16">
                      <line x1="8" y1="6" x2="21" y2="6"/>
                      <line x1="8" y1="12" x2="21" y2="12"/>
                      <line x1="8" y1="18" x2="21" y2="18"/>
                      <line x1="3" y1="6" x2="3.01" y2="6"/>
                      <line x1="3" y1="12" x2="3.01" y2="12"/>
                      <line x1="3" y1="18" x2="3.01" y2="18"/>
                    </svg>
                    List
                  </button>
                  <button
                    className={`${styles.viewToggleBtn} ${resultsView === 'map' ? styles.active : ''}`}
                    onClick={() => setResultsView('map')}
                  >
                    <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" width="16" height="16">
                      <path d="M21 10c0 7-9 13-9 13s-9-6-9-13a9 9 0 0 1 18 0z"/>
                      <circle cx="12" cy="10" r="3"/>
                    </svg>
                    Map
                  </button>
                </div>
              )}
              {resultsView === 'list' && (
                <select
                  value={sortOrder}
                  onChange={e => {
                    const params = new URLSearchParams(searchParams);
                    if (e.target.value === 'default') {
                      params.delete('sort');
                    } else {
                      params.set('sort', e.target.value);
                    }
                    router.push(`${pathname}?${params.toString()}`);
                  }}
                  className={styles.sortSelect}
                >
                  <option value="default">Sort: Relevance</option>
                  {(!isSecondaryView || isMixedView) && <option value="rwm_desc">Highest Reading, Writing &amp; Maths %</option>}
                  {(!isSecondaryView || isMixedView) && <option value="rwm_asc">Lowest Reading, Writing &amp; Maths %</option>}
                  {(isSecondaryView || isMixedView) && <option value="att8_desc">Highest Attainment 8</option>}
                  {(isSecondaryView || isMixedView) && <option value="att8_asc">Lowest Attainment 8</option>}
                  {isLocationSearch && <option value="distance">Nearest first</option>}
                  <option value="name_asc">Name A–Z</option>
                </select>
              )}
            </div>
          </div>
        )}

        {isSearchActive && (
          <div className={styles.activeFilters}>
            {searchParams.get('search') && <span className={styles.filterChip}>Search: {searchParams.get('search')}<a href="/" className={styles.chipRemove} onClick={e => { e.preventDefault(); }}>×</a></span>}
            {searchParams.get('local_authority') && <span className={styles.filterChip}>{searchParams.get('local_authority')}</span>}
            {searchParams.get('school_type') && <span className={styles.filterChip}>{searchParams.get('school_type')}</span>}
          </div>
        )}

        {initialSchools.schools.length === 0 && isSearchActive ? (
          <EmptyState
            title="No schools found"
            message="Try adjusting your search criteria or filters to find schools."
            action={{
              label: 'Clear all filters',
              onClick: () => {
                window.location.href = '/';
              },
            }}
          />
        ) : initialSchools.schools.length > 0 && resultsView === 'map' && isLocationSearch ? (
          /* Map View Layout */
          <div className={styles.mapViewContainer}>
            <div className={styles.mapContainer}>
              <SchoolMap
                schools={isLoadingMap ? initialSchools.schools : mapSchools}
                center={initialSchools.location_info?.coordinates}
                referencePoint={initialSchools.location_info?.coordinates}
                onMarkerClick={setSelectedMapSchool}
                nationalAvgRwm={nationalAvgRwm}
                laAverages={laAverages}
              />
            </div>
            <div className={styles.compactList}>
              {(isLoadingMap ? initialSchools.schools : mapSchools).map((school) => (
                <div
                  key={school.urn}
                  className={`${styles.listItemWrapper} ${selectedMapSchool?.urn === school.urn ? styles.highlightedItem : ''}`}
                >
                  <CompactSchoolItem
                    school={school}
                    onAddToCompare={addSchoolFromSearch}
                    isInCompare={selectedSchools.some(s => s.urn === school.urn)}
                    nationalAvgRwm={nationalAvgRwm}
                  />
                </div>
              ))}
            </div>

            {/* Mobile Bottom Sheet for Selected Map Pin */}
            {selectedMapSchool && (
              <div className={styles.bottomSheetWrapper}>
                <div className={styles.bottomSheet}>
                  <button className={styles.closeSheetBtn} onClick={() => setSelectedMapSchool(null)}>×</button>
                  <CompactSchoolItem
                    school={selectedMapSchool}
                    onAddToCompare={addSchoolFromSearch}
                    isInCompare={selectedSchools.some(s => s.urn === selectedMapSchool.urn)}
                    nationalAvgRwm={nationalAvgRwm}
                  />
                </div>
              </div>
            )}
          </div>
        ) : (
          /* List View Layout */
          <>
            <div className={styles.schoolList}>
              {sortedSchools.map((school) => (
                school.attainment_8_score != null ? (
                  <SecondarySchoolRow
                    key={school.urn}
                    school={school}
                    isLocationSearch={isLocationSearch}
                    onAddToCompare={addSchoolFromSearch}
                    onRemoveFromCompare={removeSchool}
                    isInCompare={selectedSchools.some(s => s.urn === school.urn)}
                    laAvgAttainment8={school.local_authority ? laAverages[school.local_authority] ?? null : null}
                  />
                ) : (
                  <SchoolRow
                    key={school.urn}
                    school={school}
                    isLocationSearch={isLocationSearch}
                    onAddToCompare={addSchoolFromSearch}
                    onRemoveFromCompare={removeSchool}
                    isInCompare={selectedSchools.some(s => s.urn === school.urn)}
                    nationalAvgRwm={nationalAvgRwm}
                  />
                )
              ))}
            </div>

            {(hasMore || allSchools.length < initialSchools.total) && (
              <div className={styles.loadMoreSection}>
                <p className={styles.loadMoreCount}>
                  Showing {allSchools.length.toLocaleString()} of {initialSchools.total.toLocaleString()} schools
                </p>
                {hasMore && (
                  <button
                    onClick={handleLoadMore}
                    disabled={isLoadingMore}
                    className={`btn btn-secondary ${styles.loadMoreButton}`}
                  >
                    {isLoadingMore ? 'Loading...' : 'Load more schools'}
                  </button>
                )}
              </div>
            )}
          </>
        )}
      </section>
    </div>
  );
}

/* Compact School Item for Map View */
interface CompactSchoolItemProps {
  school: School;
  onAddToCompare: (school: School) => void;
  isInCompare: boolean;
  nationalAvgRwm?: number | null;
}

function CompactSchoolItem({ school, onAddToCompare, isInCompare, nationalAvgRwm }: CompactSchoolItemProps) {
  const ofstedBadge = buildOfstedListBadge(school);
  const isSecondary = school.attainment_8_score != null;

  // vs-national delta for primary schools
  const rwmDelta =
    !isSecondary && school.rwm_expected_pct != null && nationalAvgRwm != null
      ? Math.round(school.rwm_expected_pct - nationalAvgRwm)
      : null;

  const deltaStyle: React.CSSProperties =
    rwmDelta == null
      ? {}
      : rwmDelta >= 2
      ? { fontSize: '0.7rem', color: 'var(--status-above)', fontWeight: 600 }
      : rwmDelta <= -2
      ? { fontSize: '0.7rem', color: 'var(--brand)', fontWeight: 600 }
      : { fontSize: '0.7rem', color: 'var(--text-muted)' };

  return (
    <div className={styles.compactItem}>
      <div className={styles.compactItemContent}>
        <div className={styles.compactItemHeader}>
          <a href={schoolUrl(school.urn, school.school_name)} className={styles.compactItemName}>
            {school.school_name}
          </a>
          {school.distance !== undefined && school.distance !== null && (
            <span className={styles.distanceBadge}>
              {school.distance.toFixed(1)} mi
            </span>
          )}
        </div>
        {/* Ofsted badge */}
        <div style={{ marginBottom: '0.25rem' }}>
          <span
            style={{
              display: 'inline-block',
              padding: '0.0625rem 0.375rem',
              fontSize: '0.625rem',
              fontWeight: 600,
              borderRadius: '3px',
              whiteSpace: 'nowrap',
              ...(ofstedBadge.cssClass === 'ofsted1' ? { background: 'var(--status-above-bg)', color: 'var(--status-above)' } :
                  ofstedBadge.cssClass === 'ofsted2' ? { background: 'var(--status-above-bg)', color: 'var(--status-above)' } :
                  ofstedBadge.cssClass === 'ofsted3' ? { background: 'var(--status-below-bg)', color: 'var(--status-below)' } :
                  ofstedBadge.cssClass === 'ofsted4' ? { background: 'var(--status-below)', color: 'var(--text-inverse)' } :
                  ofstedBadge.cssClass === 'ofstedRc' ? { background: 'var(--phase-secondary-text)', color: 'var(--text-inverse)' } :
                  ofstedBadge.cssClass === 'ofstedPending' ? { background: 'var(--bg-secondary)', color: 'var(--text-muted)' } :
                  { background: 'var(--bg-secondary)', color: 'var(--text-muted)' }),
            }}
          >
            {ofstedBadge.label}
          </span>
        </div>
        {/* Headline metric + delta */}
        <div className={styles.compactItemStats}>
          <span className={styles.compactStat}>
            <strong>
              {isSecondary
                ? (school.attainment_8_score != null ? school.attainment_8_score.toFixed(1) : '-')
                : (school.rwm_expected_pct != null ? `${school.rwm_expected_pct}%` : '-')}
            </strong>
            {' '}
            {isSecondary ? 'Att 8' : 'RWM'}
          </span>
          {rwmDelta != null && (
            <span style={deltaStyle}>
              {rwmDelta >= 2
                ? `+${rwmDelta} pts vs national`
                : rwmDelta <= -2
                ? `${rwmDelta} pts vs national`
                : '≈ national avg'}
            </span>
          )}
        </div>
      </div>
      <div className={styles.compactItemActions}>
        <button
          className={isInCompare ? 'btn btn-active btn-sm' : 'btn btn-secondary btn-sm'}
          onClick={() => onAddToCompare(school)}
        >
          {isInCompare ? '✓ Comparing' : '+ Compare'}
        </button>
        <a href={schoolUrl(school.urn, school.school_name)} className="btn btn-tertiary btn-sm">
          View
        </a>
      </div>
    </div>
  );
}
