/* =========================================================
   XPF — Extended Pinball Framework
   Dark technical theme, Antmicro-flavoured
   ========================================================= */

:root{
  --bg:            #16181b;
  --bg-alt:        #1a1d21;
  --surface:       #1f2225;
  --surface-2:     #24272a;
  --surface-3:     #282b30;
  --line:          #323539;
  --line-soft:     #2a2d31;
  --white:         #ffffff;
  --gray-1:        #d9d9d9;
  --gray-2:        #a7a7a7;
  --gray-3:        #8b8b8b;
  --gray-4:        #79797c;
  --mint:          #b4fdb1;
  --mint-dim:      #8fd68d;
  --cyan:          #8fe3ff;
  --amber:         #ffd28a;
  --pink:          #ff9ecb;

  --font-head: "Lato", "Segoe UI", Arial, Helvetica, sans-serif;
  --font-body: "Roboto", "Segoe UI", Arial, Helvetica, sans-serif;
  --font-mono: "Roboto Mono", "SF Mono", Consolas, monospace;

  --container: 1320px;
  --pad: clamp(1.25rem, 4vw, 3rem);
  --sec-y: clamp(3.5rem, 8vw, 7.5rem);
  --radius: 6px;
}

*,*::before,*::after{ box-sizing:border-box; }

[hidden]{ display:none !important; }

html{ scroll-behavior:smooth; scroll-padding-top:100px; }

body{
  margin:0;
  background:var(--bg);
  color:var(--gray-2);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--font-head); color:var(--white); margin:0 0 .6em; font-weight:700; line-height:1.15; }
h1{ font-size:clamp(2.1rem, 4.6vw, 3.9rem); font-weight:900; letter-spacing:-.015em; }
h2{ font-size:clamp(1.65rem, 3vw, 2.6rem); letter-spacing:-.01em; }
h3{ font-size:1.16rem; letter-spacing:.005em; }
h4{ font-size:1.02rem; }
p{ margin:0 0 1rem; }
ul,ol{ margin:0; padding:0; list-style:none; }

.container{ width:100%; max-width:var(--container); margin:0 auto; padding-inline:var(--pad); }

.eyebrow{
  font-family:var(--font-body);
  font-size:.75rem; letter-spacing:.18em; text-transform:uppercase;
  color:var(--mint); margin:0 0 1rem;
}
.muted{ color:var(--gray-3); }

/* ---------------- banner ---------------- */
.banner{
  background:var(--surface-3);
  border-bottom:1px solid var(--line);
  font-size:.83rem; color:var(--gray-2);
}
.banner--hidden{ display:none; }
.banner__inner{ display:flex; align-items:center; gap:.9rem; min-height:42px; flex-wrap:wrap; }
.banner__tag{
  font-family:var(--font-head); font-weight:700; font-size:.68rem; letter-spacing:.16em;
  color:#16181b; background:var(--mint); padding:.14rem .5rem; border-radius:3px;
}
.banner__link{ color:var(--mint); white-space:nowrap; }
.banner__link:hover{ text-decoration:underline; }
.banner__close{
  margin-left:auto; background:none; border:0; color:var(--gray-4);
  cursor:pointer; font-size:.85rem; line-height:1; padding:.4rem;
}
.banner__close:hover{ color:var(--white); }

/* ---------------- navbar ---------------- */
.navbar{
  position:sticky; top:0; z-index:60;
  background:rgba(22,24,27,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.navbar--scrolled{ background:rgba(22,24,27,.97); }
.navbar__inner{ display:flex; align-items:center; gap:1.5rem; height:76px; }

.logo{ display:flex; align-items:center; gap:.65rem; flex:0 0 auto; }
.logo__text{ display:flex; flex-direction:column; line-height:1.05; }
.logo__text b{
  font-family:var(--font-head); font-weight:900; font-size:1.3rem;
  letter-spacing:.2em; color:var(--white);
}
.logo__text i{
  font-style:normal; font-family:var(--font-body); font-size:.56rem;
  letter-spacing:.19em; text-transform:uppercase; color:var(--gray-4); margin-top:.18rem;
}

.nav{ display:flex; align-items:center; gap:1.9rem; margin-left:auto; }
.nav a{
  font-size:.83rem; letter-spacing:.09em; text-transform:uppercase;
  color:var(--gray-3); white-space:nowrap; padding:.35rem 0;
  border-bottom:1px solid transparent; transition:color .18s, border-color .18s;
}
.nav a:hover{ color:var(--white); border-bottom-color:var(--mint); }

.navbar__right{ display:flex; align-items:center; gap:.85rem; margin-left:auto; }
.nav + .navbar__right{ margin-left:1.5rem; }

/* language selector */
.lang{ position:relative; }
.lang__button{
  display:flex; align-items:center; gap:.45rem;
  background:transparent; border:1px solid var(--line); border-radius:var(--radius);
  color:var(--gray-2); font-family:var(--font-body); font-size:.8rem; letter-spacing:.08em;
  padding:.45rem .6rem; cursor:pointer; transition:border-color .18s, color .18s;
}
.lang__button:hover{ color:var(--white); border-color:var(--gray-4); }
.lang__chev{ transition:transform .2s; }
.lang--open .lang__chev{ transform:rotate(180deg); }
.lang__menu{
  position:absolute; top:calc(100% + .5rem); right:0; z-index:70;
  min-width:190px; padding:.35rem;
  background:var(--surface-3); border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:0 18px 44px rgba(0,0,0,.5);
  display:none;
}
.lang--open .lang__menu{ display:block; }
.lang__menu button{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:1rem;
  background:none; border:0; cursor:pointer;
  font-family:var(--font-body); font-size:.86rem; color:var(--gray-2);
  padding:.5rem .6rem; border-radius:4px; text-align:left;
}
.lang__menu button:hover{ background:rgba(255,255,255,.06); color:var(--white); }
.lang__menu button[aria-selected="true"]{ color:var(--mint); }
.lang__code{ font-size:.7rem; letter-spacing:.12em; color:var(--gray-4); }

/* burger */
.burger{ display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:.4rem; }
.burger span{ width:22px; height:2px; background:var(--gray-2); transition:background .2s; }
.burger:hover span{ background:var(--white); }

/* ---------------- buttons ---------------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  font-family:var(--font-body); font-size:.85rem; letter-spacing:.09em; text-transform:uppercase;
  padding:.85rem 1.6rem; border-radius:var(--radius); border:1px solid transparent;
  cursor:pointer; transition:background .18s, color .18s, border-color .18s, transform .18s;
}
.btn--sm{ padding:.55rem 1.05rem; font-size:.78rem; }
.btn--primary{ background:var(--mint); color:#14171a; font-weight:500; }
.btn--primary:hover{ background:#c8ffc5; transform:translateY(-1px); }
.btn--ghost{ border-color:var(--line); color:var(--gray-1); }
.btn--ghost:hover{ border-color:var(--mint); color:var(--white); }

.link{
  display:inline-flex; align-items:center; gap:.4rem;
  color:var(--mint); font-size:.82rem; letter-spacing:.07em; text-transform:uppercase;
}
.link::after{ content:"→"; transition:transform .18s; }
.link:hover::after{ transform:translateX(3px); }

/* ---------------- sections ---------------- */
.section{ padding-block:var(--sec-y); border-top:1px solid var(--line-soft); }
.section--alt{ background:var(--bg-alt); }

.section__head{ max-width:760px; margin:0 auto clamp(2.2rem,5vw,3.6rem); text-align:center; }
.section__head--left{ margin-inline:0; text-align:left; max-width:820px; }
.section__head p{ color:var(--gray-3); font-size:1.02rem; }

/* ---------------- hero ---------------- */
.hero{ position:relative; overflow:hidden; padding-block:clamp(3rem,7vw,6rem) clamp(3rem,7vw,6.5rem); }
.hero__glow{
  position:absolute; inset:auto; top:-260px; right:-160px; width:900px; height:900px;
  background:radial-gradient(circle, rgba(180,253,177,.13) 0%, rgba(180,253,177,0) 62%);
  pointer-events:none;
}
.hero__inner{
  position:relative; display:grid; grid-template-columns:1fr 1.12fr;
  gap:clamp(2rem,5vw,4rem); align-items:center;
}
.hero__copy .lead{ font-size:clamp(1rem,1.35vw,1.16rem); color:var(--gray-2); max-width:42em; }
.hero h1{ margin-bottom:1.1rem; }
.hero__actions{ display:flex; flex-wrap:wrap; gap:.8rem; margin-top:1.8rem; }

.hero__stats{
  display:flex; flex-wrap:wrap; gap:clamp(1.5rem,4vw,3rem);
  margin-top:clamp(2rem,4vw,3rem); padding-top:1.6rem; border-top:1px solid var(--line);
}
.hero__stats li{ display:flex; flex-direction:column; }
.hero__stats b{ font-family:var(--font-head); font-size:1.75rem; color:var(--mint); font-weight:900; line-height:1.1; }
.hero__stats span{ font-size:.78rem; letter-spacing:.1em; text-transform:uppercase; color:var(--gray-4); }

.hero__art{ position:relative; }
.hero__art picture{
  display:block; overflow:hidden;
  background:#000; border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:0 34px 70px rgba(0,0,0,.55);
}
.hero__art img{ width:100%; height:auto; }

/* ---------------- grids & cards ---------------- */
.grid{ display:grid; gap:1.25rem; }
.grid--4{ grid-template-columns:repeat(4,1fr); }
.grid--3{ grid-template-columns:repeat(3,1fr); }
.grid--tight{ gap:1rem; }

.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:1.7rem 1.6rem; transition:border-color .2s, transform .2s, background .2s;
}
.card:hover{ border-color:#41464c; transform:translateY(-2px); }
.card p{ font-size:.94rem; color:var(--gray-3); margin-bottom:0; }
.card h3{ margin-bottom:.55rem; }

.card--pillar{ display:flex; flex-direction:column; gap:.2rem; }
.card--pillar p{ flex:1; margin-bottom:1.1rem; }
.card__icon{
  width:46px; height:46px; margin-bottom:1.15rem; color:var(--mint);
  display:grid; place-items:center;
  background:rgba(180,253,177,.08); border:1px solid rgba(180,253,177,.22); border-radius:var(--radius);
}
.card__icon svg{ width:24px; height:24px; }

/* inline snippet inside a card (rule call, one-liner) */
.snippet{
  display:block; margin-top:1rem; padding:.6rem .75rem;
  background:#1b1e21; border:1px solid var(--line); border-radius:4px;
  font-family:var(--font-mono); font-size:.79rem; color:var(--mint);
  overflow-x:auto; white-space:nowrap;
}

.card--art{ padding:clamp(1rem,2vw,1.6rem); background:var(--surface-2); }
.card--art:hover{ transform:none; }
.card--wide{ margin-bottom:1.25rem; }
.card--art img{ width:100%; border-radius:4px; }

/* split layouts */
.split{
  display:grid; grid-template-columns:1.1fr 1fr; gap:clamp(1.8rem,4vw,3.6rem);
  align-items:center; margin-top:clamp(2rem,4vw,3rem);
}
.split--reverse .split__art{ order:2; }
.split--wide{ grid-template-columns:1.25fr 1fr; }

.feature-list li{ padding:1.05rem 0; border-top:1px solid var(--line); }
.feature-list li:first-child{ border-top:0; padding-top:0; }
/* H3 for document outline, but kept at the smaller H4 size by design. */
.feature-list h3{ margin-bottom:.35rem; color:var(--gray-1); font-size:1.02rem; }
.feature-list p{ margin:0; font-size:.94rem; color:var(--gray-3); }

.check-list li{
  position:relative; padding:.55rem 0 .55rem 1.9rem; font-size:.96rem; color:var(--gray-2);
  border-bottom:1px solid var(--line-soft);
}
.check-list li::before{
  content:""; position:absolute; left:.15rem; top:1.05rem;
  width:9px; height:9px; border-radius:50%; background:var(--mint);
  box-shadow:0 0 0 4px rgba(180,253,177,.14);
}

/* specs */
.specs{ margin:1.4rem 0 0; border-top:1px solid var(--line); }
.specs div{
  display:grid; grid-template-columns:150px 1fr; gap:1rem;
  padding:.8rem 0; border-bottom:1px solid var(--line-soft);
}
.specs dt{
  font-size:.74rem; letter-spacing:.12em; text-transform:uppercase; color:var(--gray-4);
  padding-top:.15rem;
}
.specs dd{ margin:0; font-size:.94rem; color:var(--gray-2); font-family:var(--font-mono); }

/* machines gallery */
.gallery .card--machine{ padding:0; overflow:hidden; display:flex; flex-direction:column; }
.card--machine img{
  width:100%; background:linear-gradient(180deg,#1c2024,#15181b);
  padding:1.6rem 1.6rem 0; border-bottom:1px solid var(--line-soft);
}
.card__body{ padding:1.4rem 1.5rem 1.6rem; }
.card__body h3{ font-family:var(--font-head); letter-spacing:.06em; }
.tags{ display:flex; flex-wrap:wrap; gap:.4rem; margin-top:1rem; }
.tags li{
  font-size:.7rem; letter-spacing:.09em; text-transform:uppercase; color:var(--gray-3);
  border:1px solid var(--line); border-radius:999px; padding:.22rem .65rem;
}

/* steps */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:1.25rem; }
.steps li{ position:relative; padding:1.7rem 1.5rem; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); }
.steps__n{
  display:block; font-family:var(--font-head); font-weight:900; font-size:1.5rem;
  color:var(--mint); opacity:.55; margin-bottom:.7rem;
}
.steps p{ margin:0; font-size:.94rem; color:var(--gray-3); }

/* ---------------- comparison page ---------------- */
.visually-hidden{
  position:absolute; width:1px; height:1px; margin:-1px; padding:0;
  overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0;
}

.crumbs{ font-size:.82rem; color:var(--gray-4); margin-bottom:1.6rem; display:flex; gap:.5rem; }
.crumbs a{ color:var(--gray-3); }
.crumbs a:hover{ color:var(--mint); }

.callout{
  border:1px solid var(--line); border-left:3px solid var(--mint);
  background:var(--surface); border-radius:var(--radius);
  padding:clamp(1.4rem,3vw,2.2rem); max-width:900px;
}
.callout h2{ font-size:1.16rem; margin-bottom:.9rem; }
.callout p{ color:var(--gray-2); font-size:.97rem; }
.callout p:last-child{ margin-bottom:0; }
.callout--quiet{ border-left-color:var(--gray-4); max-width:none; }
.callout__verdict{ border-top:1px solid var(--line); padding-top:1rem; color:var(--gray-1) !important; }

/* The table is the point of the page, so it scrolls inside its own box
   rather than forcing the whole document sideways on a phone. */
.cmp-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); }
.cmp{ width:100%; border-collapse:collapse; min-width:720px; font-size:.92rem; }
.cmp th, .cmp td{ padding:.85rem 1rem; text-align:left; vertical-align:top; border-top:1px solid var(--line-soft); }
.cmp thead th{
  background:var(--bg-alt); color:var(--white); font-family:var(--font-head);
  font-size:.82rem; letter-spacing:.08em; text-transform:uppercase;
  border-top:0; position:sticky; top:0;
}
.cmp tbody th{ color:var(--gray-2); font-weight:500; width:22%; background:rgba(255,255,255,.02); }
.cmp td{ color:var(--gray-3); }
.cmp tbody tr:hover td, .cmp tbody tr:hover th{ background:rgba(255,255,255,.035); }
.cmp--plus{ color:var(--mint) !important; }
.cmp-note{ font-size:.82rem; margin-top:.9rem; }
.cmp-cta{ justify-content:center; margin-top:2.5rem; }

@media (max-width:640px){
  .cmp{ min-width:560px; font-size:.86rem; }
  .cmp th, .cmp td{ padding:.7rem .75rem; }
}

/* ---------------- faq ---------------- */
.faq{ max-width:900px; margin:0 auto; border-top:1px solid var(--line-soft); }
.faq__item{ border-bottom:1px solid var(--line-soft); }

.faq__item summary{
  display:flex; align-items:center; gap:1rem; cursor:pointer;
  padding:1.15rem .25rem; list-style:none;
}
.faq__item summary::-webkit-details-marker{ display:none; }

.faq__item summary h3{
  margin:0; flex:1; font-size:1.02rem; font-weight:400;
  color:var(--gray-1); transition:color .18s;
}
.faq__item summary:hover h3{ color:var(--white); }
.faq__item[open] summary h3{ color:var(--mint); }

/* Chevron drawn on the summary so no extra markup is needed. */
.faq__item summary::after{
  content:""; flex:0 0 auto; width:9px; height:9px; margin-right:.35rem;
  border-right:1.8px solid var(--gray-4); border-bottom:1.8px solid var(--gray-4);
  transform:rotate(45deg) translate(-2px,-2px); transition:transform .2s, border-color .2s;
}
.faq__item[open] summary::after{
  border-color:var(--mint); transform:rotate(-135deg) translate(-2px,-2px);
}

.faq__more{ max-width:900px; margin:1.6rem auto 0; text-align:center; }

.faq__a{ padding:0 3rem 1.4rem .25rem; }
.faq__a p{ margin:0; color:var(--gray-3); font-size:.95rem; max-width:70ch; }

@media (prefers-reduced-motion:reduce){
  .faq__item summary::after{ transition:none; }
}

/* ---------------- contact ---------------- */
.contact{ display:grid; grid-template-columns:.85fr 1.15fr; gap:clamp(2rem,5vw,4rem); align-items:start; }
.contact__copy p{ color:var(--gray-3); }
.contact__mail a{ color:var(--mint); font-family:var(--font-mono); font-size:.95rem; }
.contact__mail a:hover{ text-decoration:underline; }

.contact__form{ display:grid; grid-template-columns:1fr 1fr; gap:1rem 1.1rem; }
.contact__form label{ display:flex; flex-direction:column; gap:.45rem; }
.contact__form .full{ grid-column:1 / -1; }
.contact__form span{ font-size:.74rem; letter-spacing:.12em; text-transform:uppercase; color:var(--gray-4); }
.contact__form input,
.contact__form select,
.contact__form textarea{
  background:var(--bg); border:1px solid var(--line); border-radius:var(--radius);
  color:var(--gray-1); font-family:var(--font-body); font-size:.95rem;
  padding:.75rem .9rem; width:100%; resize:vertical;
  transition:border-color .18s, background .18s;
}
.contact__form input:focus,
.contact__form select:focus,
.contact__form textarea:focus{ outline:none; border-color:var(--mint); background:#14171a; }
.contact__form input::placeholder,
.contact__form textarea::placeholder{ color:#5c6167; }
.contact__form .btn{ grid-column:1 / -1; justify-self:start; }
.form-note{ grid-column:1 / -1; margin:0; color:var(--mint); font-size:.9rem; }
.form-note--error{ color:var(--pink); }

/* Honeypot. Kept off-screen rather than display:none, which some bots skip. */
.hp{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }

.contact__form button[disabled]{ opacity:.55; cursor:progress; transform:none; }

/* ---------------- thanks ---------------- */
.thanks__card{
  display:flex; flex-direction:column; align-items:center; gap:1rem;
  text-align:center; padding:2.1rem 1.4rem;
}
.thanks__initial{
  width:60px; height:60px; border-radius:50%; display:grid; place-items:center;
  font-family:var(--font-head); font-size:1.4rem; font-weight:900; letter-spacing:.02em;
  color:var(--mint); background:rgba(180,253,177,.08); border:1px solid rgba(180,253,177,.22);
}
.thanks__card b{
  font-family:var(--font-head); font-size:1.22rem; font-weight:700; color:var(--white);
}

/* ---------------- footer ---------------- */
.footer{ border-top:1px solid var(--line); padding-top:clamp(2.5rem,5vw,4rem); background:var(--bg); }
.footer__inner{ display:grid; grid-template-columns:1.2fr 2fr; gap:clamp(2rem,5vw,4rem); }
.footer__brand p{ margin-top:1rem; font-size:.92rem; color:var(--gray-4); max-width:32ch; }
.footer__cols{ display:grid; grid-template-columns:repeat(3,1fr); gap:1.5rem; }
.footer__cols h4{ font-size:.76rem; letter-spacing:.14em; text-transform:uppercase; color:var(--gray-2); margin-bottom:1rem; }
.footer__cols a{ display:block; font-size:.9rem; color:var(--gray-4); padding:.28rem 0; transition:color .18s; }
.footer__cols a:hover{ color:var(--mint); }
.footer__bottom{
  display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap;
  margin-top:clamp(2rem,4vw,3.5rem); padding-block:1.4rem;
  border-top:1px solid var(--line-soft); font-size:.8rem; color:var(--gray-4);
}

/* ---------------- reveal on scroll ---------------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.is-visible{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){ .reveal{ opacity:1; transform:none; transition:none; } }

/* ---------------- responsive ---------------- */
@media (max-width:1320px){
  /* eight nav entries: tighten before the burger takes over at 1080px */
  .nav{ gap:1.15rem; }
  .nav a{ font-size:.79rem; letter-spacing:.06em; }
  .nav + .navbar__right{ margin-left:1rem; }
}
@media (max-width:1180px){
  .grid--4{ grid-template-columns:repeat(2,1fr); }
  .steps{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:1080px){
  .nav{ display:none; }
  .burger{ display:flex; }
  .nav + .navbar__right{ margin-left:auto; }
  .nav--open{
    display:flex; flex-direction:column; align-items:stretch; gap:0;
    position:absolute; top:100%; left:0; right:0;
    background:var(--surface-3); border-top:1px solid var(--line);
    padding:.5rem 0; margin:0;
  }
  .nav--open a{ padding:.9rem var(--pad); border-bottom:1px solid var(--line-soft); }
  .navbar__inner{ position:relative; }
  .hero__inner{ grid-template-columns:1fr; }
  .hero__art{ max-width:720px; }
  .split, .split--wide{ grid-template-columns:1fr; }
  .split--reverse .split__art{ order:0; }
  .contact{ grid-template-columns:1fr; }
}
@media (max-width:820px){
  .grid--3{ grid-template-columns:repeat(2,1fr); }
  .footer__inner{ grid-template-columns:1fr; }
}
@media (max-width:640px){
  .grid--4,.grid--3,.steps{ grid-template-columns:1fr; }
  .contact__form{ grid-template-columns:1fr; }
  .specs div{ grid-template-columns:1fr; gap:.2rem; }
  .footer__cols{ grid-template-columns:repeat(2,1fr); }
  .banner__inner span[data-i18n]{ display:none; }
  .logo__text i{ display:none; }
  .hero__stats{ gap:1.5rem; }
}