/* ==========================================================================
   KUBIK — budowa domów. Estetyka: rysunek techniczny + beton + jeden akcent.
   Źródła: 21st.dev (struktura sekcji), Aceternity (sticky scroll scene),
   Magic UI (marquee), Uiverse (CTA), Codrops (kamera na krzywej / scroll).
   ========================================================================== */

@font-face{font-family:'Sora';src:url('../fonts/sora-regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Sora';src:url('../fonts/sora-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'Sora';src:url('../fonts/sora-700.woff2') format('woff2');font-weight:700;font-display:swap}
@font-face{font-family:'Plex Mono';src:url('../fonts/ibm-plex-mono-regular.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Plex Mono';src:url('../fonts/ibm-plex-mono-500.woff2') format('woff2');font-weight:500;font-display:swap}

:root{
  --paper:#F4F2EE;
  --paper-2:#EAE7E1;
  --white:#FFFFFF;
  --ink:#14161A;
  --ink-2:#4A4F57;
  --ink-3:#7A8089;
  --accent:#C8452F;
  --accent-dark:#9E3222;
  --line:rgba(20,22,26,.14);
  --line-2:rgba(20,22,26,.07);
  --sans:'Sora',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --mono:'Plex Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --edge:5vw;
  --wrap:1260px;
  --r:4px;
  --shadow:0 1px 2px rgba(20,22,26,.05),0 18px 40px -24px rgba(20,22,26,.4);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:clamp(1rem,.96rem + .2vw,1.06rem);
  line-height:1.62;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* siatka rysunku technicznego pod całą stroną */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);
  background-size:56px 56px;
}
main,.hdr,.ftr{position:relative;z-index:1}

.wrap{width:min(var(--wrap),100% - 2*var(--edge));margin-inline:auto}
.sec{padding:clamp(4.5rem,9vw,8rem) 0}
.sec--paper2{background:var(--paper-2)}
.sec--ink{background:var(--ink);color:var(--paper)}

/* ---------- typografia ---------- */
.kicker{
  font-family:var(--mono);font-size:.74rem;font-weight:500;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent);display:flex;align-items:center;gap:.7rem;margin-bottom:1.1rem;
}
.kicker::before{content:"";width:1.6rem;height:1px;background:var(--accent)}
.sec--ink .kicker{color:#E9A08F}
.sec--ink .kicker::before{background:#E9A08F}

.h1{font-weight:700;line-height:1.02;letter-spacing:-.03em;font-size:clamp(2.5rem,5.6vw,4.6rem)}
.h2{font-weight:700;line-height:1.05;letter-spacing:-.025em;font-size:clamp(2.1rem,4.4vw,3.6rem)}
.h3{font-weight:600;line-height:1.15;font-size:clamp(1.3rem,1.9vw,1.7rem)}
.h1 em,.h2 em{font-style:normal;color:var(--accent)}
.lead{font-size:clamp(1.03rem,.98rem + .35vw,1.2rem);color:var(--ink-2);max-width:54ch}
.muted{color:var(--ink-3)}
.sec--ink .lead,.sec--ink .muted{color:rgba(244,242,238,.72)}
.mono{font-family:var(--mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}

/* reveal */
.js .rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.65,.25,1)}
.js .rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.js .rv{opacity:1!important;transform:none!important;transition:none}}

/* ---------- przyciski ---------- */
.btn{
  --bg:var(--ink);--fg:var(--paper);
  position:relative;display:inline-flex;align-items:center;gap:.6rem;
  padding:.92rem 1.5rem;border:1px solid transparent;border-radius:var(--r);
  background:var(--bg);color:var(--fg);text-decoration:none;font-weight:600;font-size:.92rem;
  overflow:hidden;cursor:pointer;transition:transform .3s cubic-bezier(.22,.65,.25,1),box-shadow .3s ease;
}
.btn::after{
  content:"";position:absolute;inset:0 auto 0 -60%;width:45%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.3),transparent);
  transform:skewX(-16deg);transition:left .7s cubic-bezier(.22,.65,.25,1);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px -16px rgba(20,22,26,.8)}
.btn:hover::after{left:120%}
.btn--accent{--bg:var(--accent);--fg:#fff}
.btn--ghost{--bg:transparent;--fg:var(--ink);border-color:var(--line)}
.btn--ghost:hover{background:rgba(20,22,26,.05)}
.sec--ink .btn--ghost{--fg:var(--paper);border-color:rgba(244,242,238,.3)}

/* ---------- header ---------- */
.hdr{
  position:sticky;top:0;z-index:70;display:flex;align-items:center;gap:1.4rem;
  padding:.7rem var(--edge);background:rgba(244,242,238,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-2);
}
.hdr.stuck{background:rgba(244,242,238,.96);box-shadow:0 8px 26px -22px rgba(20,22,26,.9)}
.brand{display:flex;align-items:baseline;gap:.55rem;text-decoration:none;font-weight:700;letter-spacing:-.02em;font-size:1.18rem}
.brand span{font-family:var(--mono);font-size:.66rem;letter-spacing:.2em;color:var(--accent);text-transform:uppercase}
.nav{display:flex;gap:1.5rem;margin-left:auto;align-items:center}
.nav a{text-decoration:none;font-size:.88rem;font-weight:500;color:var(--ink-2);position:relative;padding:.3rem 0}
.nav a::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--accent);transition:width .3s}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{width:100%}
.hdr__side{display:flex;align-items:center;gap:.6rem}
.lang{display:flex;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.lang button{background:none;border:0;padding:.4rem .65rem;font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:var(--ink-3);cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:var(--r);width:42px;height:42px;align-items:center;justify-content:center;cursor:pointer}
.burger svg{width:19px;height:19px}
@media (max-width:960px){
  .nav{position:fixed;inset:60px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;background:var(--paper);
       border-bottom:1px solid var(--line);padding:.4rem var(--edge) 1.2rem;transform:translateY(-130%);
       transition:transform .4s cubic-bezier(.22,.65,.25,1);max-height:calc(100vh - 60px);overflow-y:auto}
  .nav.open{transform:none}
  .nav a{padding:.8rem 0;font-size:1.02rem;width:100%;border-bottom:1px solid var(--line-2)}
  .burger{display:flex}
  .hdr .btn{display:none}
}

/* ---------- SCENA: hero + budowa na scrollu ---------- */
.build{position:relative}
.build__sticky{position:sticky;top:0;height:100svh;overflow:hidden;background:#dfe4ea}
#scene{position:absolute;inset:0;width:100%;height:100%;display:block}
.build__poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:none}
.no-webgl .build__poster{display:block}
.no-webgl #scene{display:none}

/* nakładka: hero (na starcie) */
.build__hero{
  position:absolute;left:0;right:0;bottom:0;top:0;display:flex;flex-direction:column;justify-content:flex-start;
  padding:12vh var(--edge) 0;pointer-events:none;transition:opacity .4s ease;
}
.build__hero > *{pointer-events:auto}
.build__hero h1{max-width:15ch;margin-bottom:1.1rem}
.build__hero .lead{max-width:34ch;margin-bottom:1.6rem;color:var(--ink);font-weight:500}
.lead--m{display:none}
.build__cta{display:flex;flex-wrap:wrap;gap:.7rem}
/* nad zdjęciem przycisk-duch musi być pełny, inaczej ginie na ziemi */
.build__cta .btn--ghost{background:var(--paper);border-color:transparent}
.build__cta .btn--ghost:hover{background:#fff}

/* nakładka: karta etapu */
.stagecard{
  position:absolute;left:var(--edge);bottom:clamp(2rem,7vh,4.5rem);width:min(30rem,90vw);
  background:rgba(255,255,255,.93);backdrop-filter:blur(6px);border:1px solid var(--line);
  border-left:3px solid var(--accent);border-radius:var(--r);padding:1.5rem 1.6rem;
  opacity:0;transform:translateY(14px);transition:opacity .35s ease,transform .35s ease;box-shadow:var(--shadow);
}
.stagecard.on{opacity:1;transform:none}
.stagecard__no{font-family:var(--mono);font-size:.75rem;letter-spacing:.18em;color:var(--accent);margin-bottom:.5rem}
.stagecard h2{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:700;letter-spacing:-.02em;line-height:1.1;margin-bottom:.5rem}
.stagecard p{font-size:.96rem;color:var(--ink-2)}
.stagecard__meta{display:flex;gap:1.4rem;margin-top:1rem;padding-top:.9rem;border-top:1px solid var(--line-2)}
.stagecard__meta div{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-3);text-transform:uppercase}
.stagecard__meta b{display:block;font-family:var(--sans);font-size:1.05rem;font-weight:600;color:var(--ink);letter-spacing:0;text-transform:none;margin-top:.2rem}

/* legenda etapów po prawej */
.legend{
  position:absolute;right:var(--edge);top:50%;transform:translateY(-50%);display:grid;gap:.7rem;
  background:rgba(244,242,238,.9);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1.1rem;
}
.legend li{display:flex;align-items:center;justify-content:flex-end;gap:.7rem;font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-2);transition:color .3s}
.legend li::after{content:"";width:1.6rem;height:1px;background:currentColor;opacity:.5;transition:width .35s ease,opacity .3s}
.legend li.on{color:var(--accent)}
.legend li.on::after{width:2.8rem;opacity:1}
.legend li.done{color:var(--ink-2)}

/* pasek postępu budowy */
.progress{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(20,22,26,.1)}
.progress i{display:block;height:100%;width:0;background:var(--accent)}

@media (max-width:820px){
  /* Na telefonie nakładki NIE leżą na zdjęciu — timelapse dostaje własne pasmo
     u góry, a cała typografia siada pod nim na papierze. Inaczej hero i karta
     etapu zasłaniają całą budowę. */
  .build__sticky{height:100svh;background:var(--paper)}
  #scene,.build__poster{top:0;bottom:auto;height:52svh}
  .build__hero,.stagecard{
    position:absolute;top:52svh;bottom:0;left:0;right:0;
    background:var(--paper);border:0;border-radius:0;box-shadow:none;
    padding:1.3rem var(--edge) 4.6rem;transform:none;
  }
  .build__hero{justify-content:flex-start;border-top:2px solid var(--accent)}
  /* kicker zjada dwie linie w wąskim pasmie — H1 niesie ten sam komunikat */
  .build__hero .kicker{display:none}
  .build__hero h1{font-size:clamp(1.9rem,8.5vw,2.6rem);max-width:none;margin-bottom:.7rem}
  .build__hero .lead{display:none}
  .build__hero .lead--m{display:block;font-size:.95rem;line-height:1.45;max-width:none;margin-bottom:0}
  /* CTA z hero jest zbędne — dolny pasek ma „Zadzwoń" i „Wycena" */
  .build__cta{display:none}

  .stagecard{border-top:2px solid var(--accent);display:flex;flex-direction:column;justify-content:flex-start}
  .stagecard__no{font-size:.68rem;margin-bottom:.35rem}
  .stagecard h2{font-size:clamp(1.5rem,6.5vw,2rem);margin-bottom:.4rem}
  .stagecard p{font-size:.94rem;line-height:1.45;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  .stagecard__meta{margin-top:.8rem;padding-top:.7rem;gap:1.2rem}
  .stagecard__meta b{font-size:.98rem}

  .legend{display:none}
  .progress{bottom:auto;top:calc(52svh - 3px)}
}
}

/* wersja bez WebGL — etapy jako karty */
.nogl-stages{display:none;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr))}
.no-webgl .nogl-stages{display:grid}

/* ---------- marquee ---------- */
.marq{background:var(--ink);color:var(--paper);overflow:hidden}
.marq__track{display:flex;width:max-content;animation:marq 34s linear infinite}
.marq:hover .marq__track{animation-play-state:paused}
.marq__set{display:flex;align-items:center}
.marq__i{display:flex;align-items:center;gap:.6rem;padding:.95rem 1.7rem;white-space:nowrap;font-family:var(--mono);font-size:.76rem;letter-spacing:.14em;text-transform:uppercase}
.marq__i::after{content:"";width:4px;height:4px;background:var(--accent);margin-left:1.4rem}
.marq__i b{font-family:var(--sans);font-weight:700;font-size:.95rem;letter-spacing:0}
@keyframes marq{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.marq__track{animation:none}}

/* ---------- usługi (bento) ---------- */
.bento{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.cell{background:var(--paper);padding:clamp(1.5rem,2.5vw,2.2rem);display:flex;flex-direction:column;gap:.7rem;min-height:14rem;transition:background .3s}
.cell:hover{background:var(--white)}
.cell--wide{grid-column:span 2}
.cell__no{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;color:var(--accent)}
.cell h3{font-size:1.25rem;font-weight:600;letter-spacing:-.01em}
.cell p{font-size:.94rem;color:var(--ink-2)}
.cell ul{margin-top:auto;display:flex;flex-wrap:wrap;gap:.4rem}
.cell li{font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);border:1px solid var(--line);padding:.2rem .5rem}
@media (max-width:900px){.bento{grid-template-columns:1fr 1fr}.cell--wide{grid-column:span 2}}
@media (max-width:560px){.bento{grid-template-columns:1fr}.cell--wide{grid-column:span 1}.cell{min-height:0}}

/* ---------- realizacje ---------- */
.gal{display:grid;grid-template-columns:repeat(6,1fr);gap:clamp(.7rem,1.4vw,1.1rem)}
.gal figure{position:relative;margin:0;overflow:hidden;background:var(--paper-2);border-radius:var(--r)}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform 1s cubic-bezier(.22,.65,.25,1)}
.gal figure:hover img{transform:scale(1.04)}
.gal figcaption{position:absolute;left:.7rem;bottom:.7rem;background:rgba(244,242,238,.94);padding:.3rem .7rem;font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;border-radius:2px}
.g-a{grid-column:span 4;aspect-ratio:16/10}
.g-b{grid-column:span 2;aspect-ratio:3/4}
.g-c{grid-column:span 2;aspect-ratio:3/4}
.g-d{grid-column:span 4;aspect-ratio:16/10}
.g-e{grid-column:span 3;aspect-ratio:16/10}
.g-f{grid-column:span 3;aspect-ratio:16/10}
.gal img{display:block}
@media (max-width:820px){
  .gal{grid-template-columns:repeat(2,1fr)}
  .g-a,.g-d,.g-e,.g-f{grid-column:span 2;aspect-ratio:16/10}
  .g-b,.g-c{grid-column:span 1;aspect-ratio:3/4}
}

/* ---------- liczby ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:rgba(244,242,238,.16);border:1px solid rgba(244,242,238,.16)}
.stat{background:var(--ink);padding:1.6rem 1.3rem}
.stat b{display:block;font-size:clamp(2rem,3.6vw,3rem);font-weight:700;letter-spacing:-.03em;line-height:1}
.stat span{display:block;font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:rgba(244,242,238,.6);margin-top:.55rem}
@media (max-width:700px){.stats{grid-template-columns:1fr 1fr}}

/* ---------- opinie ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1rem,2vw,1.5rem)}
.quote{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:1.7rem}
.quote p{font-size:1.02rem;line-height:1.55}
.quote footer{margin-top:1.1rem;padding-top:.9rem;border-top:1px solid var(--line-2);font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.quote__stars{color:var(--accent);letter-spacing:.14em;margin-bottom:.8rem;font-size:.9rem}
@media (max-width:900px){.quotes{grid-template-columns:1fr}}

/* ---------- kontakt ---------- */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4rem);align-items:start}
.form{display:grid;gap:.9rem}
.field{display:grid;gap:.35rem}
.field label{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.field input,.field select,.field textarea{
  font:inherit;font-size:.96rem;padding:.8rem .9rem;border:1px solid var(--line);border-radius:var(--r);
  background:var(--white);color:var(--ink);width:100%;
}
.field textarea{min-height:6.5rem;resize:vertical}
.form__note{font-size:.8rem;color:var(--ink-3)}
.cinfo{display:grid;gap:1.1rem;margin-top:1.6rem}
.cinfo a,.cinfo div{display:flex;gap:.8rem;align-items:flex-start;text-decoration:none;font-weight:500}
.cinfo svg{width:1.15rem;height:1.15rem;color:var(--accent);flex:none;margin-top:.2rem}
.cinfo small{display:block;font-weight:400;color:var(--ink-3);font-size:.82rem}
@media (max-width:820px){.contact{grid-template-columns:1fr}}

/* ---------- stopka ---------- */
.ftr{background:var(--ink);color:var(--paper);padding:clamp(3rem,6vw,4.5rem) 0 1.8rem}
.ftr__top{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2.2rem}
.ftr h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:#E9A08F;margin-bottom:.9rem}
.ftr a{color:rgba(244,242,238,.8);text-decoration:none;display:block;padding:.25rem 0;font-size:.92rem}
.ftr a:hover{color:#fff}
.ftr__bot{margin-top:2.6rem;padding-top:1.4rem;border-top:1px solid rgba(244,242,238,.16);display:flex;flex-wrap:wrap;gap:.9rem;justify-content:space-between;align-items:center;font-size:.78rem;color:rgba(244,242,238,.55)}
.ftr__bot a{display:inline;font-size:.78rem}
.credit{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase}
@media (max-width:820px){.ftr__top{grid-template-columns:1fr;gap:1.6rem}}

/* mobilny pasek CTA */
.callbar{position:fixed;left:0;right:0;bottom:0;z-index:80;display:none;gap:.5rem;padding:.5rem;background:rgba(244,242,238,.95);backdrop-filter:blur(10px);border-top:1px solid var(--line)}
.callbar .btn{flex:1;justify-content:center}
@media (max-width:700px){.callbar{display:flex}body{padding-bottom:4.4rem}}

/* strona prawna */
.legal{max-width:70ch;padding-block:clamp(3rem,7vw,5.5rem)}
.legal h1{font-size:clamp(2rem,4.5vw,3rem);font-weight:700;letter-spacing:-.02em;margin-bottom:1.3rem}
.legal h2{font-size:clamp(1.3rem,2.4vw,1.7rem);font-weight:600;margin:2.2rem 0 .7rem}
.legal p,.legal li{color:var(--ink-2);margin-bottom:.85rem}
.legal ul{list-style:disc;padding-left:1.2rem}
.legal a{color:var(--accent);font-weight:600}

.demobar{background:var(--ink);color:rgba(244,242,238,.82);font-family:var(--mono);font-size:.7rem;letter-spacing:.08em;text-align:center;padding:.5rem 1rem}