Gordijn-overgang tussen pagina's Nieuw

<!-- Gordijn-overgang tussen pagina's · NedDev · eigen werk. -->
<div class="jouw-container">
<div class="pgc"><div class="pgc__bar"><span class="pgc__logo">Verhoef<b>.</b></span><div class="pgc__nav"><button class="pgc__lnk is-on" type="button">Home</button><button class="pgc__lnk" type="button">Diensten</button><button class="pgc__lnk" type="button">Contact</button></div></div>
<div class="pgc__view">
<div class="pgc__pg is-on"><span class="pgc__k">Bouwbedrijf · Delft</span><h4 class="pgc__h">Verbouwen zonder verrassingen.</h4><p class="pgc__p">Vaste prijs vooraf, één aanspreekpunt en oplevering op de afgesproken dag.</p></div>
<div class="pgc__pg pgc__pg--b"><span class="pgc__k">Diensten</span><ul class="pgc__ul"><li><span>Dakkapel plaatsen</span><em>vanaf € 7.950</em></li><li><span>Badkamer compleet</span><em>vanaf € 11.500</em></li><li><span>Aanbouw 3 x 4 meter</span><em>vanaf € 39.000</em></li></ul></div>
<div class="pgc__pg pgc__pg--c"><span class="pgc__k">Contact</span><h4 class="pgc__h">Kom langs in de werkplaats.</h4><p class="pgc__p">Rotterdamseweg 212, Delft · 015 123 4567 · info@voorbeeld.nl</p></div>
</div><div class="pgc__cur" aria-hidden="true"><i></i><i></i><i></i><i></i><i></i></div></div>
</div>

/* Gordijn-overgang tussen pagina's · NedDev · eigen werk. */
.pgc{position:absolute;inset:0;background:#fff;color:#0a0a0a;font-family:'Switzer',system-ui,sans-serif;display:flex;flex-direction:column;overflow:hidden;container-type:inline-size}
.pgc__bar{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;border-bottom:1px solid #e6e3de;background:#fff;position:relative;z-index:3}
.pgc__logo{font-weight:800;font-size:14px;letter-spacing:-.02em}.pgc__logo b{color:#F5480F}
.pgc__nav{display:flex;gap:2px}
.pgc__lnk{appearance:none;border:0;background:none;font:500 12px 'Switzer',sans-serif;color:#6b6762;padding:5px 9px;border-radius:999px;cursor:pointer;transition:color .2s,background .2s}
.pgc__lnk:hover{color:#0a0a0a}.pgc__lnk.is-on{background:#0a0a0a;color:#fff}
.pgc__lnk:focus-visible{outline:2px solid #F5480F;outline-offset:2px}
.pgc__view{position:relative;flex:1}
.pgc__pg{position:absolute;inset:0;padding:14px 16px;display:flex;flex-direction:column;justify-content:center;gap:7px;visibility:hidden}
.pgc__pg.is-on{visibility:visible}
.pgc__pg--b{background:#f4f3f1}.pgc__pg--c{background:#0a0a0a;color:#fff}
.pgc__k{font:500 10px 'JetBrains Mono',monospace;letter-spacing:.12em;text-transform:uppercase;color:#F5480F}
.pgc__h{margin:0;font:700 clamp(19px,6.4cqw,27px)/1.08 'Switzer',sans-serif;letter-spacing:-.03em;max-width:15em}
.pgc__p{margin:0;font-size:12px;line-height:1.45;color:#57534e;max-width:30em}.pgc__pg--c .pgc__p{color:#bdb8b1}
.pgc__ul{list-style:none;margin:0;padding:0}
.pgc__ul li{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:8px 0;border-top:1px solid #dcd8d2;font-size:13px;font-weight:600}
.pgc__ul li:last-child{border-bottom:1px solid #dcd8d2}
.pgc__ul em{font:500 11px 'JetBrains Mono',monospace;font-style:normal;color:#57534e;font-variant-numeric:tabular-nums}
.pgc__pg.is-on>*{animation:pgc-in .55s cubic-bezier(.2,.7,.2,1) both}
.pgc__pg.is-on>*:nth-child(2){animation-delay:.06s}.pgc__pg.is-on>*:nth-child(3){animation-delay:.12s}
@keyframes pgc-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.pgc__cur{position:absolute;left:0;right:0;bottom:0;top:39px;display:flex;z-index:4;pointer-events:none}
.pgc__cur i{flex:1;background:#F5480F;transform:scaleY(0);transform-origin:50% 100%;transition:transform .42s cubic-bezier(.7,0,.3,1)}
.pgc__cur i+i{margin-left:-1px}
@media (prefers-reduced-motion:reduce){.pgc__pg.is-on>*{animation:none}.pgc__cur{display:none}}

// Gordijn-overgang tussen pagina's · NedDev · eigen werk.
// root = het element waarin de HTML staat
function init(root){
root=root.querySelector('.pgc')||root;
var rm=matchMedia('(prefers-reduced-motion: reduce)').matches;
var links=[].slice.call(root.querySelectorAll('.pgc__lnk')),pages=[].slice.call(root.querySelectorAll('.pgc__pg')),bars=[].slice.call(root.querySelectorAll('.pgc__cur i'));
var cur=0,busy=false,auto=!rm,timer=0,ST=55;
function show(n){pages.forEach(function(p,i){p.classList.toggle('is-on',i===n);});links.forEach(function(l,i){l.classList.toggle('is-on',i===n);l.setAttribute('aria-current',i===n?'page':'false');});cur=n;}
function set(o,s){bars.forEach(function(b,i){b.style.transformOrigin=o;b.style.transitionDelay=(i*ST)+'ms';b.style.transform=s;});}
function go(n){if(busy||n===cur)return;if(rm){show(n);return;}busy=true;set('50% 100%','scaleY(1)');
setTimeout(function(){show(n);set('50% 0%','scaleY(0)');setTimeout(function(){busy=false;},420+bars.length*ST);},420+bars.length*ST);}
links.forEach(function(l,i){l.addEventListener('click',function(){auto=false;clearTimeout(timer);go(i);});});
function loop(){timer=setTimeout(function(){if(!auto)return;go((cur+1)%pages.length);loop();},2800);}
if(auto)loop();
}
init(document.querySelector('.jouw-container'));