	// -----------------------------------------HEADER-----------------------------------------------------------
  const headers = document.querySelectorAll('.header_top_item');
  if(headers.length > 0) {
  headers[0].classList.add('active');
}
  document.querySelectorAll('.header_top_item').forEach((item) => {
    
  item.addEventListener('click', (e) => {
    e.preventDefault(); // если не нужно переходить со страницы
    document.querySelectorAll('.header_top_item').forEach(el => el.classList.remove('active'));
    item.classList.add('active');
  });
});

// -------------------------------ACCORDION-SLIDER-----------------------------------------------------------

document.addEventListener('DOMContentLoaded', () => {
  const accordion = document.querySelector('.accordion');
  const items = document.querySelectorAll('.accordion-item');
  const dotsContainer = document.createElement('div');
  dotsContainer.classList.add('slider-dots');
  accordion.after(dotsContainer);

  let dots = [];
  let isMobile = false;
  let currentIndex = 0;

  // Свайп
  let startX = 0;
  let endX = 0;

  // === СОЗДАНИЕ ТОЧЕК ===
  function createDots() {
    dotsContainer.innerHTML = '';
    items.forEach((_, index) => {
      const dot = document.createElement('span');
      dot.classList.add('dot');
      if (index === 0) dot.classList.add('active');
      dotsContainer.appendChild(dot);
    });
    dots = document.querySelectorAll('.dot');
  }

  // === ПОКАЗ СЛАЙДА ===
  function showSlide(index) {
    items.forEach((item, i) => {
      if (i === index) {
        item.style.display = 'flex';
      } else {
        item.style.display = 'none';
      }
    });

    dots.forEach(dot => dot.classList.remove('active'));
    if (dots[index]) dots[index].classList.add('active');
  }

  // === АКТИВАЦИЯ СЛАЙДЕРА НА МОБИЛЬНОМ ===
  function enableSlider() {
    isMobile = true;
    items.forEach(item => item.classList.add('active'));
    createDots();
    currentIndex = 0;
    showSlide(currentIndex);

    dots.forEach((dot, i) => {
      dot.addEventListener('click', () => {
        currentIndex = i;
        showSlide(currentIndex);
      });
    });

    // свайпы
    accordion.addEventListener('touchstart', (e) => {
      startX = e.touches[0].clientX;
    });

    accordion.addEventListener('touchmove', (e) => {
      endX = e.touches[0].clientX;
    });

    accordion.addEventListener('touchend', () => {
      if (!isMobile) return;
      const diff = endX - startX;
      if (Math.abs(diff) > 50) {
        if (diff > 0) {
          currentIndex = (currentIndex - 1 + items.length) % items.length;
        } else {
          currentIndex = (currentIndex + 1) % items.length;
        }
        showSlide(currentIndex);
      }
    });

    dotsContainer.style.display = 'flex';
  }

  // === ОТКЛЮЧЕНИЕ СЛАЙДЕРА НА ДЕСКТОПЕ ===
  function disableSlider() {
    isMobile = false;
    dotsContainer.style.display = 'none';

    items.forEach(item => {
      item.classList.remove('active');
      item.style.display = 'flex';
    });

    if (items.length > 0) items[0].classList.add('active');

    items.forEach(item => {
      item.onclick = () => {
        if (!isMobile) {
          items.forEach(i => i.classList.remove('active'));
          item.classList.add('active');
        }
      };
    });
  }

  // === ПРОВЕРКА ШИРИНЫ ===
  function checkWidth() {
    if (window.innerWidth <= 600 && !isMobile) {
      enableSlider();
    } else if (window.innerWidth > 600 && isMobile) {
      disableSlider();
    } else if (window.innerWidth > 600 && !isMobile) {
      disableSlider();
    }
  }

  checkWidth();
  window.addEventListener('resize', checkWidth);
});

  // -----------------------------------------ACCORDION-SECOND----------------------------------------------
document.addEventListener('DOMContentLoaded', () => {
  // карточки (открытие/закрытие)
  const cards = document.querySelectorAll('.advantage_slider_item');
  cards.forEach(card => {
    card.addEventListener('click', () => {
      if (card.classList.contains('active')) card.classList.remove('active');
      else {
        cards.forEach(c => c.classList.remove('active'));
        card.classList.add('active');
      }
    });
  });

  // слайдер
  const sliderContainer = document.querySelector('.advantage_slider');
  const slider = document.querySelector('.advantage_slider_items');
  const slides = document.querySelectorAll('.advantage_slider_item');
  let currentIndex = 0;
  let dotsContainer = null;
  let dots = null;

  const isMobile = () => window.matchMedia('(max-width: 900px)').matches;

  function buildDots() {
    if (dotsContainer) dotsContainer.remove();
    dotsContainer = document.createElement('div');
    dotsContainer.className = 'slider_dots';
    slides.forEach((_, i) => {
      const dot = document.createElement('div');
      dot.className = 'slider_dot' + (i === currentIndex ? ' active' : '');
      dot.addEventListener('click', () => moveToSlide(i));
      dotsContainer.appendChild(dot);
    });
    sliderContainer.appendChild(dotsContainer);
    dots = dotsContainer.querySelectorAll('.slider_dot');
  }

  function updateDots() {
    if (!dots) return;
    dots.forEach((d, i) => d.classList.toggle('active', i === currentIndex));
  }

  function moveToSlide(index) {
    if (!isMobile()) return;
    if (index < 0) index = slides.length - 1;
    if (index >= slides.length) index = 0;
    currentIndex = index;

    // <<< ВАЖНО: едем к фактическому смещению карточки >>>
    const offset = slides[index].offsetLeft;
    slider.style.transform = `translateX(-${offset}px)`;

    updateDots();
  }

  function initSlider() {
    if (!slider || slides.length === 0) return;

    if (!isMobile()) {
      // десктоп: сброс
      slider.style.transform = '';
      if (dotsContainer) { dotsContainer.remove(); dotsContainer = null; dots = null; }
      return;
    }

    if (!dotsContainer) buildDots();

    // после ресайза дождаться перерасчёта верстки
    requestAnimationFrame(() => moveToSlide(currentIndex));
  }

  // свайпы
  let touchStartX = 0;
  sliderContainer.addEventListener('touchstart', e => {
    touchStartX = e.changedTouches[0].screenX;
  }, {passive:true});
  sliderContainer.addEventListener('touchend', e => {
    const diff = e.changedTouches[0].screenX - touchStartX;
    if (Math.abs(diff) >= 50) {
      moveToSlide(currentIndex + (diff < 0 ? 1 : -1));
    }
  });

  window.addEventListener('resize', initSlider);
  initSlider();
});

// ----------------------------------------------------------ВЫПАДАЮЩЕЕ-МЕНЮ--------------------------------------------------------

document.querySelector('.header_nav_link-reverse').addEventListener('click', function() {
  const dropdown = document.querySelector('.dropdown-list');
  const text = this.querySelector('.link-text');

  dropdown.classList.toggle('show');
  
  // Меняем текст кнопки
  if (dropdown.classList.contains('show')) {
    text.textContent = 'Меньше услуг';
  } else {
    text.textContent = 'Больше услуг';
  }
});

// -------------------------------------BURGER-MENU-TOP-----------------------------------------------------------------------------------

document.addEventListener('DOMContentLoaded', () => {
  const burgerBtn = document.querySelector('.burger_menu_btn');
  const navWrapper = document.querySelector('.header_top_wrapper-open');
  const navMenu = navWrapper.querySelector('.header_nav_top');

  burgerBtn.addEventListener('click', () => {
    navMenu.classList.toggle('active');
    burgerBtn.classList.toggle('active');
    document.body.classList.toggle('lock'); // блокируем скролл при открытом меню
  });

  // при клике по ссылке меню закрываем бургер
  navWrapper.querySelectorAll('.header_top_link').forEach(link => {
    link.addEventListener('click', () => {
      navMenu.classList.remove('active');
      burgerBtn.classList.remove('active');
      document.body.classList.remove('lock');
    });
  });
});

// -----------------------------------------BURGER-MENU-----------------------------------------------------------------

document.addEventListener("DOMContentLoaded", () => {
  const toggleBtn = document.querySelector(".top_list_btn");
  const menu = document.querySelector(".header_nav_burger");

  toggleBtn.addEventListener("click", () => {
    menu.classList.toggle("open");
  });
});

// ---------------------------------------------SLIDER----------------------------------------------------

document.addEventListener('DOMContentLoaded', () => {
  const servicesContainer = document.querySelector('.our-services_row');
  const slider = document.querySelector('.our-services_row_items');
  const slides = document.querySelectorAll('.our-services_row_item');
  let currentIndex = 0;
  let dotsContainer, dots;
  let isActive = false;

  function initServicesSlider() {
    if (window.innerWidth > 900) {
      slider.style.transform = '';
      if (dotsContainer) {
        dotsContainer.remove();
        dotsContainer = null;
      }
      isActive = false;
      return;
    }

    if (isActive) return;
    isActive = true;

    // создаём контейнер для точек
    dotsContainer = document.createElement('div');
    dotsContainer.classList.add('our-services_dots');
    slides.forEach((_, i) => {
      const dot = document.createElement('div');
      dot.classList.add('our-services_dot');
      if (i === 0) dot.classList.add('active');
      dot.addEventListener('click', () => moveToSlide(i));
      dotsContainer.appendChild(dot);
    });
    servicesContainer.appendChild(dotsContainer);
    dots = dotsContainer.querySelectorAll('.our-services_dot');

    moveToSlide(0);
  }

  function moveToSlide(index) {
    if (window.innerWidth > 900) return;
    if (index < 0) index = slides.length - 1;
    if (index >= slides.length) index = 0;
    currentIndex = index;
    const offset = index * servicesContainer.offsetWidth;
    slider.style.transform = `translateX(-${offset}px)`;
    updateDots();
  }

  function updateDots() {
    if (!dots) return;
    dots.forEach((dot, i) => dot.classList.toggle('active', i === currentIndex));
  }

  // === свайп ===
  let touchStartX = 0;
  let touchEndX = 0;

  slider.addEventListener('touchstart', e => {
    touchStartX = e.changedTouches[0].screenX;
  });

  slider.addEventListener('touchend', e => {
    touchEndX = e.changedTouches[0].screenX;
    handleSwipe();
  });

  function handleSwipe() {
    const diff = touchEndX - touchStartX;
    if (Math.abs(diff) < 50) return; // минимальная длина свайпа
    if (diff > 0) moveToSlide(currentIndex - 1); // свайп вправо → предыдущий
    else moveToSlide(currentIndex + 1);          // свайп влево → следующий
  }

  window.addEventListener('resize', initServicesSlider);
  initServicesSlider();
});
