// Preloader
window.addEventListener('load', () => {
  setTimeout(() => {
    document.getElementById('preloader').classList.add('hidden');
  }, 1500);
});

// Navbar scroll effect
const navbar = document.querySelector('.navbar');
window.addEventListener('scroll', () => {
  if (window.scrollY > 80) {
    navbar.classList.add('scrolled');
  } else {
    navbar.classList.remove('scrolled');
  }
});

// Scroll animations
const observerOptions = {
  threshold: 0.1,
  rootMargin: '0px 0px -50px 0px'
};

const observer = new IntersectionObserver((entries) => {
  entries.forEach(entry => {
    if (entry.isIntersecting) {
      entry.target.classList.add('animated');
    }
  });
}, observerOptions);

document.querySelectorAll('.animate-on-scroll').forEach(el => {
  observer.observe(el);
});

// Counter animation
const counterObserver = new IntersectionObserver((entries) => {
  entries.forEach(entry => {
    if (entry.isIntersecting) {
      const counters = entry.target.querySelectorAll('.counter');
      counters.forEach(counter => {
        const target = parseInt(counter.getAttribute('data-target'));
        const duration = 2000;
        const step = target / (duration / 16);
        let current = 0;
        const timer = setInterval(() => {
          current += step;
          if (current >= target) {
            counter.textContent = target;
            clearInterval(timer);
          } else {
            counter.textContent = Math.floor(current);
          }
        }, 16);
      });
      counterObserver.unobserve(entry.target);
    }
  });
}, { threshold: 0.5 });

const statsSection = document.querySelector('.hero-stats');
if (statsSection) counterObserver.observe(statsSection);

// Booking modal - set room name
document.querySelectorAll('.btn-book').forEach(btn => {
  btn.addEventListener('click', function() {
    const room = this.getAttribute('data-room');
    document.getElementById('selectedRoom').value = room;
  });
});

// Form submission
document.getElementById('bookingForm').addEventListener('submit', async function(e) {
  e.preventDefault();
  const btn = this.querySelector('.btn-submit-booking');
  const originalText = btn.innerHTML;
  
  btn.innerHTML = '<i class="fas fa-spinner fa-spin me-2"></i>Отправка...';
  btn.disabled = true;

  const formData = {
    name: this.querySelector('[name="name"]').value,
    phone: this.querySelector('[name="phone"]').value,
    adults: parseInt(this.querySelector('[name="guests"]').value),
    children: 0,
    checkin: this.querySelector('[name="checkin"]').value,
    checkout: this.querySelector('[name="checkout"]').value,
    wishes: this.querySelector('[name="wishes"]').value,
    room: document.getElementById('selectedRoom').value
  };

  try {
    const response = await fetch('/api/bookings', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(formData)
    });

    if (response.ok) {
      btn.innerHTML = '<i class="fas fa-check me-2"></i>Заявка отправлена Рауфу Алексеевичу!';
      btn.style.background = '#25d366';
      this.reset();
      setTimeout(() => {
        btn.innerHTML = originalText;
        btn.style.background = '';
        btn.disabled = false;
        bootstrap.Modal.getInstance(document.getElementById('bookingModal')).hide();
      }, 2500);
    } else {
      const errorData = await response.json();
      throw new Error(errorData.error || 'Ошибка сервера');
    }
  } catch (error) {
    console.error('Booking error:', error);
    btn.innerHTML = '<i class="fas fa-exclamation-triangle me-2"></i>Ошибка отправки';
    btn.style.background = '#c9302c';
    setTimeout(() => {
      btn.innerHTML = originalText;
      btn.style.background = '';
      btn.disabled = false;
    }, 3000);
  }
});

// Smooth scroll for nav links
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
  anchor.addEventListener('click', function(e) {
    e.preventDefault();
    const target = document.querySelector(this.getAttribute('href'));
    if (target) {
      target.scrollIntoView({ behavior: 'smooth', block: 'start' });
      // Close mobile menu
      const navCollapse = document.querySelector('.navbar-collapse');
      if (navCollapse.classList.contains('show')) {
        bootstrap.Collapse.getInstance(navCollapse).hide();
      }
    }
  });
});

// Parallax effect on hero
window.addEventListener('scroll', () => {
  const hero = document.querySelector('.hero-bg');
  if (hero) {
    const scrolled = window.scrollY;
    hero.style.transform = `scale(${1 + scrolled * 0.0001}) translateY(${scrolled * 0.3}px)`;
  }
});