/* Skład Opału i Pelletu — motyw „węgiel + płomień". Wanilia, bez zależności. */
:root{
  --coal:#141110; --coal-2:#1b1613; --panel:#221b16; --panel-2:#2a221b;
  --ember:#ff7a29; --ember-2:#ff9d4d;
  --amber:#f5b53a; --amber-2:#ffcf6b;
  --green:#7bb661; --green-2:#9ed17f;
  --cream:#f5ece0; --muted:#c3b3a1; --muted-2:#9c8b78;
  --line:rgba(245,236,224,.12); --line-2:rgba(245,236,224,.22);
  --radius:16px; --radius-lg:26px; --maxw:1180px;
  --shadow:0 22px 60px -28px rgba(0,0,0,.75);
  --ff-h:"Sora",system-ui,sans-serif; --ff-b:"Inter",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
html.js .reveal{opacity:0;transform:translateY(22px)}
html.js .reveal.in{opacity:1;transform:none}
body{
  margin:0;font-family:var(--ff-b);color:var(--cream);background:var(--coal);
  line-height:1.65;font-size:17px;overflow-x:clip;
  background-image:
    radial-gradient(1100px 620px at 82% -8%, rgba(255,122,41,.14), transparent 60%),
    radial-gradient(900px 560px at 8% 6%, rgba(123,182,97,.08), transparent 58%);
  background-attachment:fixed;
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--ff-h);font-weight:700;line-height:1.12;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,6vw,4rem)}
h2{font-size:clamp(1.7rem,3.6vw,2.7rem)}
h3{font-size:clamp(1.15rem,2vw,1.4rem)}
p{margin:0 0 1em}
.wrap{width:min(100% - 2.4rem,var(--maxw));margin-inline:auto}
.eyebrow{font-family:var(--ff-h);font-weight:600;font-size:.8rem;letter-spacing:.22em;text-transform:uppercase;color:var(--amber-2);display:inline-flex;align-items:center;gap:.6rem}
.eyebrow svg{width:18px;height:18px}
.section{padding:clamp(3.4rem,8vw,6.5rem) 0}
.section--tight{padding:clamp(2.4rem,5vw,4rem) 0}
.lead{font-size:1.12rem;color:var(--muted);max-width:60ch}
.muted{color:var(--muted)}
.center{text-align:center}
.mx-auto{margin-inline:auto}

/* skip link */
.skip{position:absolute;left:-999px;top:0;z-index:200;background:var(--ember);color:#1a0f06;padding:.7rem 1.1rem;border-radius:0 0 12px 0;font-weight:700}
.skip:focus{left:0}

/* buttons */
.btn{
  --bg:var(--ember);--fg:#1c0f05;
  display:inline-flex;align-items:center;gap:.6rem;justify-content:center;
  font-family:var(--ff-h);font-weight:650;font-size:1rem;line-height:1;
  padding:.95rem 1.5rem;border-radius:999px;border:1px solid transparent;
  background:linear-gradient(180deg,var(--ember-2),var(--bg));color:var(--fg);cursor:pointer;
  box-shadow:0 14px 30px -14px rgba(255,122,41,.7);transition:transform .18s ease,box-shadow .18s ease,filter .18s ease}
.btn:hover{transform:translateY(-2px);box-shadow:0 20px 38px -14px rgba(255,122,41,.8);filter:brightness(1.04)}
.btn:focus-visible{outline:3px solid var(--amber-2);outline-offset:3px}
.btn svg{width:19px;height:19px}
.btn--ghost{background:transparent;border-color:var(--line-2);color:var(--cream);box-shadow:none}
.btn--ghost:hover{background:rgba(245,236,224,.06);box-shadow:none}
.btn--green{--bg:#5f9f47;--fg:#0c1607;background:linear-gradient(180deg,var(--green-2),#5f9f47);box-shadow:0 14px 30px -14px rgba(123,182,97,.6)}
.btn--sm{padding:.65rem 1.05rem;font-size:.9rem}
.btn--block{width:100%}

/* header */
.site-header{position:sticky;top:0;z-index:80;background:rgba(20,17,16,.72);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:border-color .25s,background .25s}
.site-header.scrolled{border-bottom-color:var(--line);background:rgba(18,15,13,.9)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 0}
.brand{display:flex;align-items:center;gap:.7rem;font-family:var(--ff-h);font-weight:750;font-size:1.12rem;letter-spacing:-.01em}
.brand .mark{width:42px;height:42px;flex:0 0 auto}
.brand small{display:block;font-family:var(--ff-b);font-weight:500;font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted-2)}
.nav-links{display:flex;align-items:center;gap:.25rem}
.nav-links a{font-family:var(--ff-h);font-weight:550;font-size:.92rem;color:var(--muted);padding:.55rem .62rem;border-radius:10px;white-space:nowrap;transition:color .18s,background .18s}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--cream);background:rgba(245,236,224,.06)}
.nav-cta{display:flex;align-items:center;gap:.6rem}
.nav-phone{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--ff-h);font-weight:650;color:var(--cream)}
.nav-phone svg{width:18px;height:18px;color:var(--amber-2)}
.burger{display:none;width:46px;height:46px;border:1px solid var(--line-2);border-radius:12px;background:transparent;cursor:pointer;padding:0;color:var(--cream)}
.burger span{display:block;width:20px;height:2px;background:currentColor;margin:4px auto;transition:.25s}
body.nav-open .burger span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.nav-open .burger span:nth-child(2){opacity:0}
body.nav-open .burger span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* hero */
.hero{position:relative;padding:clamp(3rem,8vw,6rem) 0 clamp(3.5rem,8vw,6rem);overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:-1}
.hero__bg svg{width:100%;height:100%;object-fit:cover}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(1.5rem,4vw,3.5rem);align-items:center}
.hero h1{margin-bottom:.4em}
.hero h1 .accent{background:linear-gradient(120deg,var(--amber-2),var(--ember-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__cta{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:1.6rem}
.hero__trust{display:flex;flex-wrap:wrap;gap:1.4rem;margin-top:2rem;padding-top:1.4rem;border-top:1px solid var(--line)}
.hero__trust div{display:flex;flex-direction:column}
.hero__trust b{font-family:var(--ff-h);font-size:1.5rem;color:var(--cream)}
.hero__trust span{font-size:.82rem;color:var(--muted-2);letter-spacing:.02em}
.hero__art{position:relative}
.hero__art svg{width:100%;height:auto;filter:drop-shadow(0 30px 50px rgba(0,0,0,.5))}

/* marquee strip */
.strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(0,0,0,.2)}
.strip__row{display:flex;flex-wrap:wrap;gap:1.5rem 2.6rem;justify-content:center;padding:1.1rem 0}
.strip__row span{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--ff-h);font-weight:600;font-size:.92rem;color:var(--muted);letter-spacing:.02em}
.strip__row svg{width:20px;height:20px;color:var(--amber-2)}

/* section head */
.shead{max-width:64ch;margin-bottom:2.6rem}
.shead.center{margin-inline:auto}
.shead h2{margin-top:.5rem}

/* grids */
.grid{display:grid;gap:1.3rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* cards */
.card{background:linear-gradient(180deg,var(--panel),var(--coal-2));border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;transition:transform .2s,border-color .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow)}
.card .ico{width:54px;height:54px;border-radius:14px;display:grid;place-items:center;background:radial-gradient(circle at 35% 30%,rgba(255,157,77,.28),rgba(255,122,41,.08));border:1px solid var(--line-2);margin-bottom:1rem}
.card .ico svg{width:28px;height:28px;color:var(--amber-2)}
.card h3{margin-bottom:.35em}
.card p{color:var(--muted);font-size:.97rem;margin-bottom:0}

/* product cards */
.prod{background:linear-gradient(180deg,var(--panel),var(--coal-2));border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s,border-color .2s,box-shadow .2s}
.prod:hover{transform:translateY(-5px);border-color:var(--line-2);box-shadow:var(--shadow)}
.prod__art{aspect-ratio:16/10;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.prod__art svg{width:100%;height:100%}
.prod__badge{position:absolute;top:.85rem;left:.85rem;font-family:var(--ff-h);font-weight:650;font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;padding:.35rem .7rem;border-radius:999px;background:rgba(20,17,16,.72);border:1px solid var(--line-2);color:var(--amber-2)}
.prod__body{padding:1.4rem;display:flex;flex-direction:column;flex:1}
.prod__body h3{margin-bottom:.3em}
.prod__body p{color:var(--muted);font-size:.95rem}
.spec{list-style:none;padding:0;margin:.4rem 0 1.1rem;display:flex;flex-wrap:wrap;gap:.45rem}
.spec li{font-size:.78rem;font-family:var(--ff-h);font-weight:550;color:var(--muted);background:rgba(245,236,224,.05);border:1px solid var(--line);padding:.3rem .6rem;border-radius:8px}
.prod__foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:1rem;border-top:1px solid var(--line)}
.price{font-family:var(--ff-h);line-height:1}
.price b{font-size:1.5rem;color:var(--cream)}
.price span{display:block;font-size:.76rem;color:var(--muted-2);letter-spacing:.03em}

/* steps */
.steps{counter-reset:step;display:grid;gap:1.3rem;grid-template-columns:repeat(4,1fr)}
.step{position:relative;padding:1.5rem 1.4rem;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,var(--panel),var(--coal-2))}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:-18px;left:1.4rem;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-family:var(--ff-h);font-weight:750;color:#1c0f05;background:linear-gradient(180deg,var(--amber-2),var(--ember));box-shadow:0 10px 22px -10px rgba(255,122,41,.7)}
.step h3{margin:.9rem 0 .3em;font-size:1.1rem}
.step p{color:var(--muted);font-size:.93rem;margin:0}

/* split feature */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,4vw,3.4rem);align-items:center}
.split__art svg{width:100%;height:auto;border-radius:var(--radius-lg);border:1px solid var(--line);box-shadow:var(--shadow)}
.ticks{list-style:none;padding:0;margin:1.2rem 0 0;display:grid;gap:.75rem}
.ticks li{display:flex;gap:.7rem;align-items:flex-start;color:var(--cream)}
.ticks li svg{width:22px;height:22px;color:var(--green-2);flex:0 0 auto;margin-top:2px}
.ticks li span{color:var(--muted)}
.ticks li b{color:var(--cream)}

/* table cennik */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,var(--panel),var(--coal-2))}
table.cennik{width:100%;border-collapse:collapse;min-width:560px}
.cennik th,.cennik td{padding:1rem 1.2rem;text-align:left;border-bottom:1px solid var(--line)}
.cennik thead th{font-family:var(--ff-h);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--amber-2);background:rgba(0,0,0,.22)}
.cennik tbody tr:last-child td{border-bottom:none}
.cennik tbody tr:hover{background:rgba(245,236,224,.03)}
.cennik td b{font-family:var(--ff-h)}
.cennik .u{color:var(--muted-2);font-size:.85rem}

/* kalkulator */
.calc{background:linear-gradient(180deg,var(--panel-2),var(--coal-2));border:1px solid var(--line-2);border-radius:var(--radius-lg);padding:clamp(1.5rem,3vw,2.4rem)}
.calc__row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.calc__out{margin-top:1.6rem;padding-top:1.4rem;border-top:1px solid var(--line);display:flex;align-items:baseline;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.calc__out b{font-family:var(--ff-h);font-size:2rem;color:var(--amber-2)}

/* forms + custom controls */
.field{display:flex;flex-direction:column;gap:.45rem;margin-bottom:1.1rem}
.field label,.calc label{font-family:var(--ff-h);font-weight:550;font-size:.9rem;color:var(--cream)}
.input,.select-btn,textarea.input{
  width:100%;font-family:var(--ff-b);font-size:1rem;color:var(--cream);
  background:rgba(0,0,0,.28);border:1px solid var(--line-2);border-radius:12px;padding:.85rem 1rem;transition:border-color .18s,box-shadow .18s}
.input::placeholder{color:var(--muted-2)}
.input:focus,textarea.input:focus{outline:none;border-color:var(--ember-2);box-shadow:0 0 0 3px rgba(255,122,41,.2)}
textarea.input{resize:vertical;min-height:120px}

/* custom dropdown */
.select{position:relative}
.select-btn{display:flex;align-items:center;justify-content:space-between;gap:.8rem;cursor:pointer;text-align:left}
.select-btn:focus-visible{outline:none;border-color:var(--ember-2);box-shadow:0 0 0 3px rgba(255,122,41,.2)}
.select-btn .chev{width:18px;height:18px;color:var(--muted);transition:transform .2s}
.select.open .select-btn .chev{transform:rotate(180deg)}
.select-list{position:absolute;z-index:30;top:calc(100% + 6px);left:0;right:0;background:var(--panel-2);border:1px solid var(--line-2);border-radius:12px;box-shadow:var(--shadow);padding:.4rem;max-height:260px;overflow:auto;display:none}
.select.open .select-list{display:block}
.select-list li{list-style:none;padding:.65rem .8rem;border-radius:9px;cursor:pointer;font-size:.96rem;color:var(--cream)}
.select-list li:hover,.select-list li[aria-selected="true"]{background:rgba(255,122,41,.16)}

/* stepper */
.stepper{display:inline-flex;align-items:stretch;border:1px solid var(--line-2);border-radius:12px;overflow:hidden;background:rgba(0,0,0,.28)}
.stepper button{width:46px;border:none;background:transparent;color:var(--cream);font-size:1.3rem;cursor:pointer;font-family:var(--ff-h)}
.stepper button:hover{background:rgba(255,122,41,.16)}
.stepper input{width:64px;text-align:center;border:none;background:transparent;color:var(--cream);font-family:var(--ff-h);font-size:1.05rem}
.stepper input::-webkit-outer-spin-button,.stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}

/* opinie */
.quote{background:linear-gradient(180deg,var(--panel),var(--coal-2));border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;display:flex;flex-direction:column;gap:1rem}
.stars{display:flex;gap:.2rem;color:var(--amber-2)}
.stars svg{width:18px;height:18px}
.quote p{color:var(--cream);font-size:1rem;margin:0}
.quote .who{display:flex;align-items:center;gap:.7rem;margin-top:auto}
.avatar{width:42px;height:42px;border-radius:50%;flex:0 0 auto}
.quote .who b{font-family:var(--ff-h);font-size:.95rem}
.quote .who span{display:block;font-size:.8rem;color:var(--muted-2)}

/* gallery masonry */
.filters{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.8rem;justify-content:center}
.chip{font-family:var(--ff-h);font-weight:550;font-size:.9rem;color:var(--muted);background:transparent;border:1px solid var(--line-2);border-radius:999px;padding:.5rem 1.05rem;cursor:pointer;transition:.18s}
.chip:hover{color:var(--cream);border-color:var(--amber-2)}
.chip.active{color:#1c0f05;background:linear-gradient(180deg,var(--amber-2),var(--ember));border-color:transparent}
.masonry{columns:3;column-gap:1.1rem}
.masonry .tile{break-inside:avoid;margin-bottom:1.1rem;border-radius:14px;overflow:hidden;border:1px solid var(--line);cursor:pointer;position:relative;transition:transform .2s,border-color .2s}
.masonry .tile:hover{transform:translateY(-3px);border-color:var(--line-2)}
.masonry .tile svg{width:100%;height:auto;display:block}
.masonry .tile.hidden{display:none}
.masonry .tile figcaption{position:absolute;left:0;right:0;bottom:0;padding:.7rem .9rem;font-size:.82rem;background:linear-gradient(0deg,rgba(15,12,10,.9),transparent);color:var(--cream)}

/* lightbox */
.lb{position:fixed;inset:0;z-index:120;background:rgba(10,8,6,.92);display:none;align-items:center;justify-content:center;padding:1.4rem}
.lb.open{display:flex}
.lb figure{margin:0;max-width:min(920px,92vw)}
.lb svg,.lb img{width:100%;height:auto;border-radius:14px;border:1px solid var(--line-2)}
.lb figcaption{text-align:center;color:var(--cream);margin-top:.9rem}
.lb button{position:absolute;background:rgba(34,27,22,.85);border:1px solid var(--line-2);color:var(--cream);width:52px;height:52px;border-radius:50%;cursor:pointer;font-size:1.2rem;display:grid;place-items:center}
.lb-close{top:1.2rem;right:1.2rem}
.lb-prev{left:1.2rem;top:50%;transform:translateY(-50%)}
.lb-next{right:1.2rem;top:50%;transform:translateY(-50%)}

/* FAQ */
.faq{max-width:820px;margin-inline:auto}
.faq details{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(180deg,var(--panel),var(--coal-2));margin-bottom:.9rem;overflow:hidden}
.faq summary{cursor:pointer;list-style:none;padding:1.15rem 1.4rem;font-family:var(--ff-h);font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{width:22px;height:22px;flex:0 0 auto;color:var(--amber-2);transition:transform .2s}
.faq details[open] summary .plus{transform:rotate(45deg)}
.faq details p{padding:0 1.4rem 1.3rem;margin:0;color:var(--muted)}

/* banner cta */
.cta-band{position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--line-2);background:linear-gradient(120deg,rgba(255,122,41,.16),rgba(20,17,16,.6));padding:clamp(2rem,5vw,3.4rem);text-align:center}
.cta-band h2{margin-bottom:.4em}
.cta-band .btn{margin-top:1rem}

/* contact grid */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,4vw,3rem)}
.info-list{list-style:none;padding:0;margin:1.4rem 0 0;display:grid;gap:1rem}
.info-list li{display:flex;gap:.9rem;align-items:flex-start}
.info-list .ico{width:44px;height:44px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;background:rgba(255,122,41,.1);border:1px solid var(--line-2)}
.info-list .ico svg{width:20px;height:20px;color:var(--amber-2)}
.info-list b{font-family:var(--ff-h);display:block;font-size:.95rem}
.info-list span{color:var(--muted);font-size:.95rem}
.map-frame{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;margin-top:1.3rem}
.map-frame svg{width:100%;height:100%}

/* demo note */
.demo-note{display:flex;gap:.7rem;align-items:flex-start;background:rgba(245,181,58,.08);border:1px solid rgba(245,181,58,.3);border-radius:12px;padding:.9rem 1.1rem;font-size:.9rem;color:var(--amber-2);margin-bottom:1.4rem}
.demo-note svg{width:20px;height:20px;flex:0 0 auto;margin-top:1px}

/* footer */
.site-footer{border-top:1px solid var(--line);background:rgba(0,0,0,.28);padding:clamp(2.6rem,6vw,4rem) 0 1.5rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2rem}
.foot-grid h4{font-family:var(--ff-h);font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted-2);margin-bottom:1rem}
.foot-grid a{color:var(--muted);display:block;padding:.28rem 0;transition:color .18s}
.foot-grid a:hover{color:var(--cream)}
.foot-grid p{color:var(--muted);font-size:.94rem}
.foot-bottom{margin-top:2.4rem;padding-top:1.4rem;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;color:var(--muted-2);font-size:.85rem}

/* toast + totop */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(30px);z-index:140;max-width:min(92vw,460px);background:var(--panel-2);border:1px solid var(--line-2);color:var(--cream);padding:1rem 1.2rem;border-radius:14px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s;font-size:.95rem}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.totop{position:fixed;right:22px;bottom:22px;z-index:70;width:50px;height:50px;border-radius:50%;border:1px solid var(--line-2);background:var(--panel-2);color:var(--cream);cursor:pointer;display:grid;place-items:center;opacity:0;pointer-events:none;transition:.25s}
.totop.show{opacity:1;pointer-events:auto}
.totop:hover{border-color:var(--amber-2)}
.totop svg{width:22px;height:22px}

/* responsive */
@media (max-width:960px){
  .hero__grid{grid-template-columns:1fr}
  .hero__art{order:-1;max-width:440px;margin-inline:auto}
  .split{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .contact{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .masonry{columns:2}
}
@media (max-width:680px){
  body{font-size:16px}
  .nav-links,.nav-phone{position:fixed;inset:64px 0 auto 0;flex-direction:column;background:var(--coal-2);border-bottom:1px solid var(--line);padding:1rem 1.2rem;transform:translateY(-140%);transition:transform .3s;visibility:hidden;align-items:stretch}
  body.nav-open .nav-links{transform:translateY(0);visibility:visible}
  .nav-links a{padding:.85rem .6rem;font-size:1.05rem}
  .burger{display:block}
  .nav-phone{display:none}
  .grid-2,.grid-3,.grid-4,.steps,.calc__row{grid-template-columns:1fr}
  .masonry{columns:1}
  .foot-grid{grid-template-columns:1fr}
}