/**
 * 7XL – Interactive Features
 * Clean, accessible, respects user preferences
 */

(function() {
  'use strict';

  const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;

  /**
   * Header scroll behavior
   */
  function initHeader() {
    const header = document.querySelector('.site-header');
    if (!header) return;

    let ticking = false;
    
    function handleScroll() {
      if (!ticking) {
        requestAnimationFrame(() => {
          if (window.pageYOffset > 40) {
            header.classList.add('scrolled');
          } else {
            header.classList.remove('scrolled');
          }
          ticking = false;
        });
        ticking = true;
      }
    }

    window.addEventListener('scroll', handleScroll, { passive: true });
    handleScroll();
  }

  /**
   * Mobile menu toggle
   */
  function initMobileMenu() {
    const toggle = document.querySelector('.mobile-toggle');
    const mobileNav = document.querySelector('.mobile-nav');
    
    if (!toggle || !mobileNav) return;

    toggle.addEventListener('click', () => {
      const isExpanded = toggle.getAttribute('aria-expanded') === 'true';
      toggle.setAttribute('aria-expanded', !isExpanded);
      mobileNav.hidden = isExpanded;
      
      if (!isExpanded) {
        const firstLink = mobileNav.querySelector('a');
        if (firstLink) firstLink.focus();
      }
    });

    // Close on link click
    mobileNav.querySelectorAll('a').forEach(link => {
      link.addEventListener('click', () => {
        toggle.setAttribute('aria-expanded', 'false');
        mobileNav.hidden = true;
      });
    });

    // Close on escape
    document.addEventListener('keydown', (e) => {
      if (e.key === 'Escape' && !mobileNav.hidden) {
        toggle.setAttribute('aria-expanded', 'false');
        mobileNav.hidden = true;
        toggle.focus();
      }
    });
  }

  /**
   * Scroll reveal animations
   */
  function initScrollReveal() {
    if (prefersReducedMotion) return;

    const revealElements = document.querySelectorAll(
      '.feature-card, .sport-card, .casino-game, .bonus-card, .bonus-main, .section-header'
    );

    if (!revealElements.length) return;

    revealElements.forEach(el => el.classList.add('reveal'));

    const observer = new IntersectionObserver(
      (entries) => {
        entries.forEach((entry) => {
          if (entry.isIntersecting) {
            entry.target.classList.add('visible');
            observer.unobserve(entry.target);
          }
        });
      },
      {
        threshold: 0.15,
        rootMargin: '0px 0px -40px 0px'
      }
    );

    revealElements.forEach(el => observer.observe(el));
  }

  /**
   * Smooth scroll for anchor links
   */
  function initSmoothScroll() {
    document.querySelectorAll('a[href^="#"]').forEach(anchor => {
      anchor.addEventListener('click', function(e) {
        const targetId = this.getAttribute('href');
        if (targetId === '#') return;
        
        const target = document.querySelector(targetId);
        if (target) {
          e.preventDefault();
          
          const header = document.querySelector('.site-header');
          const offset = header ? header.offsetHeight + 16 : 80;
          const targetPosition = target.getBoundingClientRect().top + window.pageYOffset - offset;
          
          window.scrollTo({
            top: targetPosition,
            behavior: prefersReducedMotion ? 'auto' : 'smooth'
          });
          
          // Set focus for accessibility
          target.setAttribute('tabindex', '-1');
          target.focus({ preventScroll: true });
        }
      });
    });
  }

  /**
   * Pause animations when not in view (performance)
   */
  function initAnimationPausing() {
    if (prefersReducedMotion) return;

    const roulette = document.querySelector('.roulette-wheel');
    if (!roulette) return;

    // Add animation via JS so it only runs when visible
    const style = document.createElement('style');
    style.textContent = `
      .roulette-wheel.animate {
        animation: spin 15s linear infinite;
      }
      @keyframes spin {
        from { transform: rotate(0deg); }
        to { transform: rotate(360deg); }
      }
    `;
    document.head.appendChild(style);

    const observer = new IntersectionObserver(
      (entries) => {
        entries.forEach(entry => {
          if (entry.isIntersecting) {
            roulette.classList.add('animate');
          } else {
            roulette.classList.remove('animate');
          }
        });
      },
      { threshold: 0.3 }
    );
    observer.observe(roulette);
  }

  /**
   * Floating cards animation (CSS-only when visible)
   */
  function initFloatingCards() {
    if (prefersReducedMotion) return;

    const style = document.createElement('style');
    style.textContent = `
      @keyframes float {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-12px); }
      }
      .floating-card.animate {
        animation: float 5s ease-in-out infinite;
      }
      .floating-card.card-2.animate {
        animation-delay: 1.5s;
      }
      .floating-card.card-3.animate {
        animation-delay: 3s;
      }
    `;
    document.head.appendChild(style);

    const cards = document.querySelectorAll('.floating-card');
    if (!cards.length) return;

    const observer = new IntersectionObserver(
      (entries) => {
        entries.forEach(entry => {
          cards.forEach(card => {
            if (entry.isIntersecting) {
              card.classList.add('animate');
            } else {
              card.classList.remove('animate');
            }
          });
        });
      },
      { threshold: 0.2 }
    );

    const heroVisual = document.querySelector('.hero-visual');
    if (heroVisual) observer.observe(heroVisual);
  }

  /**
   * Live pulse animation
   */
  function initLivePulse() {
    if (prefersReducedMotion) return;

    const style = document.createElement('style');
    style.textContent = `
      @keyframes pulse {
        0%, 100% { transform: scale(1); opacity: 1; }
        50% { transform: scale(1.4); opacity: 0.6; }
      }
      .live-pulse {
        animation: pulse 1.5s ease-in-out infinite;
      }
      .live-indicator {
        animation: blink 1.2s ease-in-out infinite;
      }
      @keyframes blink {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.5; }
      }
    `;
    document.head.appendChild(style);
  }

  /**
   * Initialize all features
   */
  function init() {
    initHeader();
    initMobileMenu();
    initScrollReveal();
    initSmoothScroll();
    initAnimationPausing();
    initFloatingCards();
    initLivePulse();
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', init);
  } else {
    init();
  }

})();