/* KAT Renovatie B.V. — motyw premium: czerń, biel, żółty akcent */
:root{
  --zolty:#ffd200;      /* akcent marki */
  --zolty2:#e6bd00;
  --czern:#101114;      /* nagłówki, hero, stopka */
  --grafit:#1b1d22;
  --tekst:#333740;
  --szary:#6e747f;
  --linia:#e4e7ec;
  --tlo:#f6f7f9;
  --max:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--tekst);background:#fff;line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}
h1,h2,h3,h4{color:var(--czern);line-height:1.1;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(2.4rem,5.2vw,4.4rem);font-weight:800;text-transform:uppercase}
h2{font-size:clamp(1.8rem,3.2vw,2.7rem);font-weight:800}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1.1em}
.lead{font-size:1.15rem;color:#4a5059}

/* pasek górny */
.topbar{background:var(--zolty);color:var(--czern);font-size:.92rem;font-weight:600}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:44px;flex-wrap:wrap}
.topbar a{text-decoration:none}
.topbar a:hover{text-decoration:underline}
.topbar .tb-right{display:flex;gap:22px;flex-wrap:wrap}

/* nagłówek */
.naglowek{position:sticky;top:0;z-index:50;background:rgba(16,17,20,.96);backdrop-filter:saturate(160%) blur(6px)}
.naglowek .container{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:78px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff;font-weight:800;font-size:1.5rem;letter-spacing:-.02em}
.logo .znak{width:38px;height:38px;background:var(--zolty);display:grid;place-items:center;color:var(--czern);font-size:1.05rem;font-weight:800;clip-path:polygon(50% 0,100% 26%,100% 74%,50% 100%,0 74%,0 26%)}
.logo span{color:var(--zolty)}
.menu{display:flex;gap:6px;list-style:none;margin:0;padding:0}
.menu a{display:block;padding:10px 14px;color:#e7e9ee;text-decoration:none;font-weight:600;font-size:.98rem;border-radius:6px}
.menu a:hover{color:var(--zolty)}
.btn{display:inline-flex;align-items:center;gap:10px;background:var(--zolty);color:var(--czern);text-decoration:none;font-weight:700;padding:14px 24px;border:0;border-radius:2px;cursor:pointer;transition:background .15s,transform .15s}
.btn:hover{background:var(--zolty2);transform:translateY(-1px)}
.btn.ciemny{background:var(--czern);color:#fff}
.btn.ciemny:hover{background:#000}
.btn.obrys{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.btn.obrys:hover{border-color:var(--zolty);color:var(--zolty)}
.btn .strzalka{font-size:1.05em;line-height:1}

/* ——— hero: slider przesuwany w poziomie ——— */
.hero{position:relative;overflow:hidden;background:var(--czern)}
.hero-slider{display:flex;transition:transform .65s cubic-bezier(.4,0,.2,1);will-change:transform}
.hero-slajd{min-width:100%;width:100%;display:flex;align-items:center;padding:96px 24px 104px}
.hero-inner{max-width:var(--max);margin:0 auto;width:100%;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.hero-text{z-index:2}
.hero-tag{display:inline-block;font-size:.74rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--zolty);border:1.5px solid var(--zolty);padding:7px 14px;margin-bottom:20px}
.hero-slajd h1{color:#fff;font-size:clamp(2.3rem,4.6vw,4rem);line-height:1.02;margin-bottom:20px}
.hero-sub{color:#c3c9d2;font-size:1.12rem;max-width:52ch;margin-bottom:30px;line-height:1.65}
.hero-akcje{display:flex;gap:14px;flex-wrap:wrap}
.hero-lokalizacja{margin:34px 0 0;padding-top:22px;border-top:1px solid rgba(255,255,255,.13);color:#8d949f;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;font-weight:600}
.hero-foto{position:relative;z-index:1}
.hero-foto img{width:100%;aspect-ratio:4/5;object-fit:cover;max-height:560px}
.hero-foto::before{content:"";position:absolute;top:-18px;right:-18px;width:100%;height:100%;border:3px solid var(--zolty);z-index:-1}
.hero-strzalki{position:absolute;top:50%;left:0;right:0;transform:translateY(-50%);display:flex;justify-content:space-between;padding:0 18px;z-index:10;pointer-events:none}
.hero-strzalka{width:50px;height:50px;background:rgba(0,0,0,.45);border:0;color:#fff;font-size:1.7rem;line-height:1;cursor:pointer;pointer-events:auto;display:grid;place-items:center;transition:background .2s;backdrop-filter:blur(4px)}
.hero-strzalka:hover{background:var(--zolty);color:var(--czern)}
.hero-kropki{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:10}
.hero-kropka{width:12px;height:12px;border:2px solid var(--zolty);background:transparent;padding:0;cursor:pointer;transition:background .2s}
.hero-kropka.akt{background:var(--zolty)}
@media(prefers-reduced-motion:reduce){.hero-slider{transition:none}}
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:34px}
  .hero-foto{order:-1;max-width:440px}
  .hero-foto img{aspect-ratio:16/11;max-height:320px}
  .hero-slajd{padding:72px 20px 96px}
}
@media(max-width:900px){
  .hero-strzalki{display:none}          /* na telefonie: przesuwanie palcem i kropki */
  .hero-kropki{bottom:22px}
  .hero-slajd{padding-bottom:74px}
}
@media(max-width:680px){
  .hero-akcje .btn{width:100%;justify-content:center}
  .hero-foto::before{top:-12px;right:-12px}
  .hero-slajd h1{font-size:clamp(2rem,8.6vw,2.6rem)}
}

/* pasek przewijany */
.tasma{background:var(--zolty);overflow:hidden;white-space:nowrap;padding:16px 0;border-top:3px solid var(--czern);border-bottom:3px solid var(--czern)}
.tasma-tor{display:inline-block;animation:przesun 28s linear infinite}
.tasma span{font-weight:800;text-transform:uppercase;font-size:1.15rem;color:var(--czern);padding:0 26px;letter-spacing:.02em}
.tasma i{color:var(--czern);opacity:.5;font-style:normal}
@keyframes przesun{from{transform:translateX(0)}to{transform:translateX(-50%)}}
@media(prefers-reduced-motion:reduce){.tasma-tor{animation:none}}

/* sekcje */
section{padding:96px 0}
section.tlo{background:var(--tlo)}
section.ciemna{background:var(--czern);color:#c9ced7}
section.ciemna h2,section.ciemna h3{color:#fff}
.naglowek-sekcji{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;flex-wrap:wrap;margin-bottom:52px}
.nadtytul{color:var(--szary);font-weight:700;letter-spacing:.16em;text-transform:uppercase;font-size:.8rem;display:flex;align-items:center;gap:10px;margin-bottom:14px}
.nadtytul::before{content:"";width:8px;height:8px;border:2px solid var(--zolty);border-radius:50%}
section.ciemna .nadtytul{color:#98a0ad}

/* liczby */
.liczby{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--linia)}
.liczba{background:#fff;padding:34px 26px}
section.ciemna .liczby{background:#2a2d34}
section.ciemna .liczba{background:var(--czern)}
.liczba b{display:block;font-size:2.6rem;font-weight:800;color:var(--czern);line-height:1}
section.ciemna .liczba b{color:var(--zolty)}
.liczba span{display:block;margin-top:8px;color:var(--szary);font-size:.95rem}

/* usługi */
.usluga{display:grid;grid-template-columns:80px 1fr 42%;gap:34px;align-items:center;border:1px solid var(--linia);background:#fff;padding:26px;margin-bottom:18px;transition:border-color .15s,box-shadow .15s}
.usluga:hover{border-color:var(--zolty);box-shadow:0 14px 40px rgba(16,17,20,.09)}
.usluga .nr{font-size:1.3rem;font-weight:800;color:var(--czern);border-bottom:3px solid var(--zolty);display:inline-block;padding-bottom:4px}
.usluga img{width:100%;aspect-ratio:4/3;object-fit:cover}
.usluga ul{margin:.4em 0 0;padding-left:1.1em;color:var(--szary)}
.usluga li{margin:.2em 0}

/* realizacje */
.galeria{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.kafel{position:relative;overflow:hidden;background:#000}
.kafel img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s,opacity .3s}
.kafel:hover img{transform:scale(1.06);opacity:.75}
.kafel figcaption{position:absolute;left:0;right:0;bottom:0;padding:18px 20px;color:#fff;background:linear-gradient(transparent,rgba(16,17,20,.88));font-weight:600}
.kafel figcaption small{display:block;font-weight:500;color:var(--zolty);text-transform:uppercase;letter-spacing:.1em;font-size:.74rem;margin-bottom:4px}

/* proces */
.kroki{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.krok{border-top:3px solid var(--zolty);padding-top:20px}
.krok b{display:block;font-size:2.1rem;font-weight:800;color:rgba(16,17,20,.16);line-height:1;margin-bottom:10px}
section.ciemna .krok b{color:rgba(255,255,255,.22)}

/* o firmie */
.dwie{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.dane-firmy{list-style:none;margin:26px 0 0;padding:0;border-top:1px solid var(--linia)}
.dane-firmy li{display:flex;justify-content:space-between;gap:20px;padding:12px 0;border-bottom:1px solid var(--linia)}
.dane-firmy span:first-child{color:var(--szary)}
.dane-firmy span:last-child{font-weight:600;color:var(--czern)}

/* kontakt */
.kontakt-siatka{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.karta-kontakt{background:#fff;border:1px solid var(--linia);padding:30px}
section.ciemna .karta-kontakt{background:var(--grafit);border-color:#2d3038}
.karta-kontakt a{color:var(--zolty);text-decoration:none;font-weight:700;font-size:1.25rem}
.karta-kontakt a:hover{text-decoration:underline}
form label{display:block;font-weight:600;color:#fff;margin:0 0 6px}
form input,form textarea{width:100%;padding:13px 15px;border:1px solid #343841;background:var(--grafit);color:#fff;font:inherit;margin-bottom:16px;border-radius:2px}
form input:focus,form textarea:focus{outline:2px solid var(--zolty);border-color:transparent}

/* stopka */
.stopka{background:#0a0b0d;color:#8d949f;padding:64px 0 28px;font-size:.94rem}
.stopka-siatka{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid #23262c}
.stopka h4{color:#fff;font-size:1rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:16px}
.stopka a{color:#c3c9d2;text-decoration:none}
.stopka a:hover{color:var(--zolty)}
.stopka ul{list-style:none;margin:0;padding:0}
.stopka li{margin:.45em 0}
.stopka-dol{padding-top:22px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:.88rem}

@media(max-width:1000px){
  .usluga{grid-template-columns:56px 1fr;gap:20px}
  .usluga img{grid-column:1/-1;order:3}
  .liczby,.kroki{grid-template-columns:repeat(2,1fr)}
  .galeria{grid-template-columns:repeat(2,1fr)}
  .dwie,.kontakt-siatka{grid-template-columns:1fr;gap:36px}
  .stopka-siatka{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  .naglowek .btn{display:none}
  .topbar .container{justify-content:center;text-align:center;gap:6px}
  .topbar>.container>span:first-child{display:none}
}
@media(max-width:680px){
  section{padding:64px 0}
  .menu{display:none}
  .naglowek .container{min-height:64px}
  .logo{font-size:1.25rem}.logo .znak{width:32px;height:32px;font-size:.9rem}
  .hero-akcje .btn{width:100%;justify-content:center}
  .filtry{gap:8px}.filtr{padding:9px 13px;font-size:.9rem}
  .galeria{grid-template-columns:1fr}
  .liczby,.kroki{grid-template-columns:1fr}
  .stopka-siatka{grid-template-columns:1fr}
  .topbar .tb-right{gap:14px}
  .hero .container{padding-top:56px;padding-bottom:56px}
}

/* ——— filtry galerii ——— */
.filtry{display:flex;gap:10px;flex-wrap:wrap;margin:-24px 0 30px}
.filtr{background:#fff;border:1px solid var(--linia);color:var(--tekst);font:inherit;font-weight:600;font-size:.95rem;padding:10px 18px;cursor:pointer;border-radius:2px;transition:.15s}
.filtr:hover{border-color:var(--zolty)}
.filtr.akt{background:var(--czern);border-color:var(--czern);color:#fff}
.kafel .poglad{position:absolute;top:12px;left:12px;z-index:2;background:rgba(16,17,20,.78);color:#fff;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;padding:5px 9px;font-weight:600}
.kafel[hidden]{display:none}
/* czytelniejsze podpisy na kaflach */
.kafel figcaption{padding:52px 20px 18px;background:linear-gradient(transparent,rgba(16,17,20,.35) 35%,rgba(16,17,20,.92))}
.kafel figcaption small{color:var(--zolty);text-shadow:0 1px 3px rgba(0,0,0,.6)}

/* ——— podstrony realizacji ——— */
.re-hero{background:var(--czern);color:#c3c9d2;padding:64px 0 56px}
.re-hero h1{color:#fff;max-width:20ch;font-size:clamp(2rem,3.8vw,3.1rem);text-transform:none}
.re-hero .lead{color:#c3c9d2;max-width:62ch}
.okruszki{color:#8d949f;font-size:.88rem;margin-bottom:22px}
.okruszki a{color:#8d949f;text-decoration:none}
.okruszki a:hover{color:var(--zolty)}
.re-meta{display:flex;gap:44px;flex-wrap:wrap;margin-top:34px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}
.re-meta span{display:block;color:#8d949f;font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;margin-bottom:6px}
.re-meta b{color:#fff;font-size:1.02rem}
.re-glowne{margin:0;background:#000}
.re-glowne img{width:100%;max-height:620px;object-fit:cover}
.re-glowne figcaption,.re-foto figcaption{color:var(--szary);font-size:.86rem;padding:10px 24px 0;max-width:var(--max);margin:0 auto}
.re-tresc{padding:72px 0 96px}
.re-kolumny{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:56px;align-items:start}
.re-tresc h2{margin-top:1.6em}
.re-tresc h2:first-child{margin-top:0}
.re-foto{margin:34px 0}
.re-foto img{width:100%;aspect-ratio:3/2;object-fit:cover}
.re-foto figcaption{padding:10px 0 0}
.re-dwa{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.re-dwa .re-foto{margin:34px 0 0}
.re-efekt{list-style:none;padding:0;margin:0}
.re-efekt li{padding:12px 0 12px 30px;border-bottom:1px solid var(--linia);position:relative}
.re-efekt li::before{content:"✓";position:absolute;left:0;color:var(--zolty);font-weight:800}
.opinia{margin:44px 0 0;padding:32px 34px;background:var(--tlo);border-left:4px solid var(--zolty)}
.opinia p{font-size:1.14rem;color:#1e2229;margin:0 0 18px;line-height:1.6}
.opinia footer{display:flex;flex-direction:column;gap:2px}
.opinia b{color:var(--czern)}
.opinia span{color:var(--szary);font-size:.9rem}
.re-bok{position:sticky;top:110px;display:grid;gap:18px}
.karta-bok{border:1px solid var(--linia);padding:26px}
.karta-bok h3{font-size:1.05rem;margin-bottom:10px}
.karta-bok p{margin:0 0 14px;color:var(--szary);font-size:.97rem}
.ciemna-karta{background:var(--czern);border-color:var(--czern);color:#c3c9d2}
.ciemna-karta h3{color:#fff}
.ciemna-karta p{color:#c3c9d2}
.tel-bok{margin:16px 0 0!important}
.tel-bok a{color:var(--zolty);font-weight:700;font-size:1.15rem;text-decoration:none}
.re-nawigacja{margin-top:56px;padding-top:24px;border-top:1px solid var(--linia)}
.re-nawigacja a{color:var(--czern);font-weight:700;text-decoration:none}
.re-nawigacja a:hover{color:var(--zolty2)}

/* kafle realizacji na stronie głównej */
.re-kafle{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:52px}
.re-kafel{display:grid;grid-template-columns:200px 1fr;gap:0;border:1px solid var(--linia);background:#fff;text-decoration:none;color:var(--tekst);transition:border-color .15s,box-shadow .15s}
.re-kafel:hover{border-color:var(--zolty);box-shadow:0 14px 40px rgba(16,17,20,.09)}
.re-kafel-foto{display:block;overflow:hidden;background:#000}
.re-kafel-foto img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.re-kafel:hover .re-kafel-foto img{transform:scale(1.05)}
.re-kafel-tresc{display:block;padding:22px 24px}
.re-kafel-tag{display:block;color:var(--szary);font-size:.76rem;text-transform:uppercase;letter-spacing:.11em;margin-bottom:8px}
.re-kafel strong{display:block;color:var(--czern);font-size:1.08rem;line-height:1.3;margin-bottom:8px}
.re-kafel small{display:block;color:var(--szary);font-size:.93rem;line-height:1.5;margin-bottom:12px}
.re-kafel-link{color:var(--czern);font-weight:700;font-size:.92rem;border-bottom:2px solid var(--zolty);display:inline-block;padding-bottom:2px}

@media(max-width:900px){
  .re-kolumny{grid-template-columns:1fr;gap:36px}
  .re-bok{position:static}
  .re-kafle{grid-template-columns:1fr}
}
@media(max-width:600px){
  .re-kafel{grid-template-columns:1fr}
  .re-kafel-foto{aspect-ratio:16/10}
  .re-dwa{grid-template-columns:1fr}
  .re-meta{gap:24px}
}

/* ——— kalkulator okien ——— */
.kalk{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:start}
.kalk-panel{background:#fff;border:1px solid var(--linia);padding:32px 34px}
.kalk-pole{margin-bottom:28px}
.kalk-pole:last-child{margin-bottom:0}
.kalk-pole label,.kalk-etykieta{display:block;font-weight:600;color:var(--czern);margin-bottom:6px}
.kalk-pole output{display:block;color:var(--szary);font-size:.95rem;margin-bottom:12px}
.kalk-pole output b{color:var(--czern);font-size:1.35rem;font-weight:800;margin-right:6px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;background:var(--linia);border-radius:99px;outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;border-radius:50%;background:var(--zolty);border:3px solid #fff;box-shadow:0 2px 8px rgba(16,17,20,.28);cursor:pointer}
input[type=range]::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:var(--zolty);border:3px solid #fff;box-shadow:0 2px 8px rgba(16,17,20,.28);cursor:pointer}
.kalk-skala{display:flex;justify-content:space-between;color:var(--szary);font-size:.82rem;margin-top:8px}
.kalk-wybor{display:flex;gap:8px;flex-wrap:wrap}
.kalk-wybor button{flex:1;min-width:110px;background:#fff;border:1px solid var(--linia);color:var(--tekst);font:inherit;font-weight:600;padding:12px 14px;cursor:pointer;border-radius:2px;transition:.15s}
.kalk-wybor button:hover{border-color:var(--zolty)}
.kalk-wybor button.akt{background:var(--czern);border-color:var(--czern);color:#fff}
.kalk-przelacznik{display:flex;align-items:flex-start;gap:10px;font-weight:500!important;color:var(--tekst)!important;margin-bottom:12px!important;cursor:pointer;line-height:1.45}
.kalk-przelacznik input{width:20px;height:20px;accent-color:var(--zolty);margin-top:1px;flex:none}
.kalk-wynik{background:var(--czern);color:#c3c9d2;padding:32px 34px;position:sticky;top:110px}
.kalk-nad{color:#8d949f;text-transform:uppercase;letter-spacing:.14em;font-size:.76rem;font-weight:700;margin-bottom:10px}
.kalk-kwota{font-size:clamp(2rem,3.6vw,2.9rem);font-weight:800;color:#fff;line-height:1;margin:0 0 12px;letter-spacing:-.02em}
.kalk-kwota i{color:var(--zolty);font-style:normal}
.kalk-info{font-size:.95rem;margin-bottom:20px}
.kalk-info b{color:#fff}
.kalk-lista{list-style:none;margin:0 0 24px;padding:0;border-top:1px solid rgba(255,255,255,.14)}
.kalk-lista li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.14);font-size:.95rem}
.kalk-lista b{color:#fff}
.kalk-wynik .btn{width:100%;justify-content:center}
.kalk-zastrzezenie{font-size:.82rem;color:#8d949f;margin:16px 0 0;line-height:1.5}
@media(max-width:900px){.kalk{grid-template-columns:1fr}.kalk-wynik{position:static}}
@media(max-width:600px){.kalk-panel,.kalk-wynik{padding:24px 20px}.kalk-wybor button{min-width:0}}
.kalk-drobne{color:var(--szary);font-weight:400;font-size:.9em}