document.addEventListener('DOMContentLoaded', function () {
  // Модалка с вузами
  const universitiesModal = document.getElementById('universitiesModal');
  const openUniversitiesBtn = document.getElementById('showModalBtn');
  const closeUniversitiesBtn = document.getElementById('closeModalBtn');

  function openUniversitiesModal(e){
    e.preventDefault();
    document.body.style.overflow = 'hidden';
    universitiesModal.style.display = 'block';
    setTimeout(() => universitiesModal.classList.add('active'), 10);
  }

  function closeUniversitiesModal(){
    universitiesModal.classList.remove('active');
    setTimeout(() => {
      universitiesModal.style.display = 'none';
      document.body.style.overflow = 'auto';
    }, 300);
  }

  if (openUniversitiesBtn) openUniversitiesBtn.addEventListener('click', openUniversitiesModal);
  if (closeUniversitiesBtn) closeUniversitiesBtn.addEventListener('click', closeUniversitiesModal);
  if (universitiesModal) {
    universitiesModal.addEventListener('click', (e) => {
      if (e.target === universitiesModal) closeUniversitiesModal();
    });
  }

  // Модалка с тестом
  const testModal = document.getElementById('careerTestModal');
  const openTestBtn = document.getElementById('showCareerTestBtn');
  const closeTestBtn = document.getElementById('closeCareerTestBtn');

  function openTestModal(e){
    e.preventDefault();
    document.body.style.overflow = 'hidden';
    testModal.style.display = 'block';
    setTimeout(() => testModal.classList.add('active'), 10);
  }

  function closeTestModal(){
    testModal.classList.remove('active');
    setTimeout(() => {
      testModal.style.display = 'none';
      document.body.style.overflow = 'auto';
    }, 300);
  }

  if (openTestBtn) openTestBtn.addEventListener('click', openTestModal);
  if (closeTestBtn) closeTestBtn.addEventListener('click', closeTestModal);
  if (testModal) {
    testModal.addEventListener('click', (e) => {
      if (e.target === testModal) closeTestModal();
    });
  }

  document.addEventListener('keydown', (e) => {
    if (e.key === 'Escape') {
      if (testModal && testModal.style.display === 'block') closeTestModal();
      if (universitiesModal && universitiesModal.style.display === 'block') closeUniversitiesModal();
    }
  });

  // Аккордион для вузов
  const accordionHeaders = document.querySelectorAll('.accordion-header');
  accordionHeaders.forEach(header => {
    header.addEventListener('click', function () {
      const item = this.parentElement;
      const content = this.nextElementSibling;

      document.querySelectorAll('.accordion-content.active').forEach(activeContent => {
        if (activeContent !== content) {
          activeContent.classList.remove('active');
          activeContent.style.maxHeight = null;
          activeContent.previousElementSibling.classList.remove('active');
        }
      });

      this.classList.toggle('active');
      if (content.classList.contains('active')) {
        content.classList.remove('active');
        content.style.maxHeight = null;
      } else {
        content.classList.add('active');
        content.style.maxHeight = content.scrollHeight + 'px';
      }
    });
  });

  // Открытие первого аккордиона по умолчанию
  document.querySelectorAll('.university-card').forEach(card => {
    const firstAccordion = card.querySelector('.accordion-item');
    if (firstAccordion) {
      const header = firstAccordion.querySelector('.accordion-header');
      const content = firstAccordion.querySelector('.accordion-content');
      header.classList.add('active');
      content.classList.add('active');
      content.style.maxHeight = content.scrollHeight + 'px';
    }
  });
});
document.addEventListener('DOMContentLoaded', function () {
  // ---------- OPEN/CLOSE ----------
  const modal = document.getElementById('ratingModal');
  const openBtn = document.getElementById('showRatingBtn');
  const closeBtn = document.getElementById('closeRatingBtn');

  function openModal(e){
    e.preventDefault();
    document.body.style.overflow = 'hidden';
    modal.style.display = 'block';
    setTimeout(() => modal.classList.add('active'), 10);

    if (typeof ym !== 'undefined') {
      ym(105827527, 'reachGoal', 'rating_opened');
    }
  }

  function closeModal(){
    modal.classList.remove('active');
    setTimeout(() => {
      modal.style.display = 'none';
      document.body.style.overflow = 'auto';
    }, 300);
  }

  if (openBtn) openBtn.addEventListener('click', openModal);
  if (closeBtn) closeBtn.addEventListener('click', closeModal);
  if (modal) modal.addEventListener('click', (e) => { if (e.target === modal) closeModal(); });
  document.addEventListener('keydown', (e) => {
    if (e.key === 'Escape' && modal && modal.style.display === 'block') closeModal();
  });

  // ---------- DATA (пока на фронте, потом можно заменить на API) ----------
  // Оценки 0..100 (примерные заглушки). Замени на свои данные.
  const universities = [
    { id:'ulgu',   name:'УлГУ — Ульяновский государственный университет', type:'classic',     acc:90, emp:75, rank:70, rev:78, url:'https://ulsu.ru' },
    { id:'ulstu',  name:'УлГТУ — Ульяновский государственный технический университет', type:'technical', acc:88, emp:82, rank:72, rev:74, url:'https://ulstu.ru' },
    { id:'ulspu',  name:'УлГПУ — Ульяновский государственный педагогический университет', type:'pedagogical', acc:86, emp:70, rank:60, rev:76, url:'https://ulspu.ru' },
    { id:'ulsau',  name:'УлГАУ — Ульяновский государственный аграрный университет', type:'agro', acc:84, emp:68, rank:58, rev:72, url:'https://ulsau.ru' },
    { id:'uiga',   name:'УИ ГА — Ульяновский институт гражданской авиации', type:'aviation', acc:85, emp:80, rank:65, rev:70, url:'https://uvauga.ru' },
    { id:'ranepa', name:'РАНХиГС (Ульяновский филиал)', type:'management', acc:83, emp:73, rank:62, rev:69, url:'https://ulyanovsk.ranepa.ru' },
  ];

  // ---------- UI refs ----------
  const listEl = document.getElementById('ratingList');
  const countEl = document.getElementById('ratingCount');
  const searchEl = document.getElementById('ratingSearch');
  const sortEl = document.getElementById('ratingSort');
  const minTotalEl = document.getElementById('ratingMinTotal');
  const minTotalLabel = document.getElementById('ratingMinTotalLabel');

  const typeEls = Array.from(document.querySelectorAll('.ratingType'));

  const wAcc = document.getElementById('wAcc');
  const wEmp = document.getElementById('wEmp');
  const wRank = document.getElementById('wRank');
  const wRev = document.getElementById('wRev');

  const wAccL = document.getElementById('wAccL');
  const wEmpL = document.getElementById('wEmpL');
  const wRankL = document.getElementById('wRankL');
  const wRevL = document.getElementById('wRevL');

  const resetBtn = document.getElementById('ratingResetBtn');

  function weights() {
    return {
      acc: Number(wAcc.value),
      emp: Number(wEmp.value),
      rank: Number(wRank.value),
      rev: Number(wRev.value),
    };
  }

  function calcTotal(u, w) {
    const sumW = (w.acc + w.emp + w.rank + w.rev) || 1;
    return Math.round(
      (u.acc * w.acc + u.emp * w.emp + u.rank * w.rank + u.rev * w.rev) / sumW
    );
  }

  function getSelectedTypes() {
    return new Set(typeEls.filter(x => x.checked).map(x => x.value));
  }

  function render() {
    const q = (searchEl.value || '').trim().toLowerCase();
    const minTotal = Number(minTotalEl.value);
    const selectedTypes = getSelectedTypes();
    const w = weights();

    // обновление лейблов
    minTotalLabel.textContent = String(minTotal);
    wAccL.textContent = w.acc; wEmpL.textContent = w.emp; wRankL.textContent = w.rank; wRevL.textContent = w.rev;

    // фильтрация
    let items = universities
      .map(u => ({ ...u, total: calcTotal(u, w) }))
      .filter(u => !q || u.name.toLowerCase().includes(q))
      .filter(u => selectedTypes.has(u.type))
      .filter(u => u.total >= minTotal);

    // сортировка
    const sort = sortEl.value;
    const cmpNum = (k) => (a,b) => b[k] - a[k];
    if (sort === 'total_desc') items.sort(cmpNum('total'));
    if (sort === 'employment_desc') items.sort(cmpNum('emp'));
    if (sort === 'reviews_desc') items.sort(cmpNum('rev'));
    if (sort === 'accreditation_desc') items.sort(cmpNum('acc'));
    if (sort === 'name_asc') items.sort((a,b) => a.name.localeCompare(b.name, 'ru'));

    countEl.textContent = String(items.length);

    // рендер
    listEl.innerHTML = items.map((u, i) => `
      <div class="university-card">
        <div class="university-header">
          <h3>${i+1}) ${u.name}</h3>
          <div class="university-meta">
            <div class="meta-item"><i class="fas fa-star"></i> Итог: <b>${u.total}</b>/100</div>
            <div class="meta-item"><i class="fas fa-check-circle"></i> Аккредитация: ${u.acc}/100</div>
            <div class="meta-item"><i class="fas fa-briefcase"></i> Трудоустройство: ${u.emp}/100</div>
            <div class="meta-item"><i class="fas fa-trophy"></i> Рейтинги: ${u.rank}/100</div>
            <div class="meta-item"><i class="fas fa-comment"></i> Отзывы: ${u.rev}/100</div>
          </div>
        </div>
        <div class="university-body">
          <div class="directions-list" style="margin-top:0;">
            <div class="direction-item">Тип: ${u.type}</div>
            <div class="direction-item">Весовая модель: A${w.acc}/E${w.emp}/R${w.rank}/O${w.rev}</div>
          </div>
        </div>
        <div class="university-footer">
          <a href="${u.url}" target="_blank" class="official-site">
            Официальный сайт <i class="fas fa-external-link-alt"></i>
          </a>
          <a href="#" class="official-site ratingMoreBtn" data-id="${u.id}">
            Подробнее <i class="fas fa-chevron-right"></i>
          </a>
        </div>
      </div>
    `).join('');

    // метрика по фильтрам (без спама: отправляем на изменение, но с лёгкой защитой)
    if (typeof ym !== 'undefined') {
      ym(105827527, 'reachGoal', 'rating_filtered', {
        q: q ? '1' : '0',
        min_total: String(minTotal),
        types: Array.from(selectedTypes).join(','),
        sort: sort
      });
    }
  }

  // события
  [searchEl, sortEl, minTotalEl, wAcc, wEmp, wRank, wRev, ...typeEls].forEach(el => {
    el.addEventListener('input', render);
    el.addEventListener('change', render);
  });

  if (resetBtn) {
    resetBtn.addEventListener('click', () => {
      searchEl.value = '';
      sortEl.value = 'total_desc';
      minTotalEl.value = 0;
      typeEls.forEach(x => x.checked = true);
      wAcc.value = 20; wEmp.value = 35; wRank.value = 25; wRev.value = 20;
      render();
    });
  }

  // initial render
  render();
});
document.addEventListener('DOMContentLoaded', function() {
    // --- Логика фильтрации рейтинга вузов ---
    const filterDirection = document.getElementById('filterDirection');
    const filterDorm = document.getElementById('filterDorm');
    const filterMil = document.getElementById('filterMil');
    const universitiesList = document.getElementById('universitiesList');
    const noResultsMsg = document.getElementById('noResultsMsg');
    const ratingModal = document.getElementById('ratingModal');
    const openRatingBtn = document.getElementById('showRatingModalBtn');
    const closeRatingBtn = document.getElementById('closeRatingModalBtn');

    // Функция фильтрации
    function filterUniversities() {
        if(!universitiesList) return;

        const typeVal = filterDirection.value;
        const needDorm = filterDorm.checked;
        const needMil = filterMil.checked;

        const cards = universitiesList.querySelectorAll('.university-card');
        let visibleCount = 0;

        cards.forEach(card => {
            const types = (card.dataset.type || '').split(' ');
            const hasDorm = card.dataset.dorm === 'true';
            const hasMil = card.dataset.mil === 'true';

            let match = true;

            if (typeVal !== 'all' && !types.includes(typeVal)) {
                match = false;
            }
            if (needDorm && !hasDorm) {
                match = false;
            }
            if (needMil && !hasMil) {
                match = false;
            }

            card.style.display = match ? 'block' : 'none';
            if (match) visibleCount++;
        });

        noResultsMsg.style.display = visibleCount === 0 ? 'block' : 'none';
    }

    // Слушатели для фильтров
    if (filterDirection) filterDirection.addEventListener('change', filterUniversities);
    if (filterDorm) filterDorm.addEventListener('change', filterUniversities);
    if (filterMil) filterMil.addEventListener('change', filterUniversities);

    // Открытие модалки рейтинга
    if (openRatingBtn) {
        openRatingBtn.addEventListener('click', function(e) {
            e.preventDefault();
            if (typeof ym !== 'undefined') {
                ym(105827527, 'reachGoal', 'rating_opened');
            }
            document.body.style.overflow = 'hidden';
            ratingModal.style.display = 'block';
            setTimeout(() => ratingModal.classList.add('active'), 10);
        });
    }

    // Закрытие модалки
    function closeRating() {
        if (ratingModal) {
            ratingModal.classList.remove('active');
            setTimeout(() => {
                ratingModal.style.display = 'none';
                document.body.style.overflow = 'auto';
            }, 300);
        }
    }

    if (closeRatingBtn) closeRatingBtn.addEventListener('click', closeRating);

    // Закрытие по клику на фон
    if (ratingModal) {
        ratingModal.addEventListener('click', (e) => {
            if (e.target === ratingModal) closeRating();
        });
    }

    // Закрытие по Escape
    document.addEventListener('keydown', (e) => {
        if (e.key === 'Escape' && ratingModal && ratingModal.style.display === 'block') {
            closeRating();
        }
    });
});