// Carousel auto-rotation + hover-flip
(function init(){
var cards=document.querySelectorAll('.carousel-card');
if(!cards.length){setTimeout(init,500);return;}
var cardArr=Array.from(cards),N=cardArr.length;

var track=document.querySelector('.carousel-track');
if(track){track.style.position='relative';track.style.display='block';}

var mid=Math.floor(N/2);
cardArr.forEach(function(c,i){
  var s=c.style;
  s.position='absolute';s.width='280px';s.height='360px';
  s.left='50%';s.top='50%';s.marginLeft='-140px';s.marginTop='-180px';
  s.cursor='pointer';s.transformOrigin='center center';s.willChange='transform,opacity';
  c.setAttribute('data-pos',String(i-mid));
});

// 5 visible levels: 0(center) ±1 ±2 — smooth, continuous, no gaps
var posCfg=[
  {s:1,x:0,z:5,o:1},       // 0
  {s:.85,x:220,z:4,o:.7},  // ±1
  {s:.65,x:390,z:3,o:.4},  // ±2
  {s:.45,x:520,z:2,o:.15}, // ±3 — dim edge
  {s:0,x:560,z:1,o:0}      // ±4 — invisible, wrap point
];

function rotate(dir){
  cardArr.forEach(function(c){
    var p=parseInt(c.getAttribute('data-pos'))||0;
    var np=p-dir;if(np>4)np=-4;if(np<-4)np=4;
    c.setAttribute('data-pos',String(np));
  });
  cardArr.forEach(function(c){
    var p=parseInt(c.getAttribute('data-pos'))||0;
    var a=Math.abs(p),d=posCfg[Math.min(a,4)],x=p>=0?d.x:-d.x;
    c.style.transition='all .6s cubic-bezier(.25,.1,.25,1)';
    c.style.transform='translateX('+x+'px) scale('+d.s+')';
    c.style.zIndex=d.z;c.style.opacity=d.o;
    c.style.pointerEvents=a>3?'none':'auto';
  });
}
rotate(0);

cardArr.forEach(function(c){
  c.addEventListener('mouseenter',function(){c.classList.add('flipped');});
  c.addEventListener('mouseleave',function(){c.classList.remove('flipped');});
});

setInterval(function(){rotate(1);},3000);
})();