/* ============================================================
   Luk-Service — arkusz stylów wspólny dla wszystkich podstron
   Kolory pobrane z logo. Zmieniasz je w jednym miejscu, poniżej.
   ============================================================ */

:root{
  --black:#000;            /* czerń jak tło logo - nagłówek, stopka, sekcje ciemne */
  --black-2:#121717;       /* czerń rozjaśniona - karty na ciemnym tle */
  --teal:#02A89E;          /* turkus z logo - akcenty na czarnym */
  --teal-deep:#0A7A73;     /* ciemniejszy turkus - przyciski i linki na jasnym tle */
  --teal-deeper:#08655F;
  --paper:#F0F4F4;         /* jasne tło strony */
  --white:#fff;
  --ink:#101414;
  --muted:#59645F;
  --line:#D4DCDB;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Barlow',system-ui,sans-serif;
  font-size:17.5px;
  line-height:1.6;
}
h1,h2,h3,.nav a,.btn,.stat-val,.step-no{
  font-family:'Barlow Condensed','Barlow',sans-serif;
  font-weight:600;
  letter-spacing:.01em;
}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1060px;margin:0 auto;padding:0 24px}
section{padding:70px 0}
p{max-width:68ch}
h1,h2,h3,p,li,figcaption{overflow-wrap:anywhere}
a{color:var(--teal-deep)}

/* ---------- NAGŁÓWEK / NAWIGACJA ---------- */
.top{background:var(--black);color:var(--white);position:sticky;top:0;z-index:50}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:78px;flex-wrap:wrap}
.logo{display:block;line-height:0}
.logo img{height:58px;width:auto}
.nav{display:flex;gap:26px;align-items:center;flex-wrap:wrap}
.nav a{color:#C6CFCE;text-decoration:none;font-size:1.05rem}
.nav a:hover,.nav a.is-active{color:var(--white);border-bottom:2px solid var(--teal);padding-bottom:2px}
.nav .tel{color:var(--teal);font-size:1.05rem}
.nav .tel + .tel{margin-left:-10px}
.nav .tel:hover{border-bottom:0}

/* ---------- PRZYCISKI ---------- */
.btn{
  display:inline-block;background:var(--teal-deep);color:#fff;text-decoration:none;
  padding:14px 28px;font-size:1.15rem;border:0;cursor:pointer;
}
.btn:hover{background:var(--teal-deeper)}
.dark .btn{background:var(--teal);color:#00201E}
.dark .btn:hover{background:#04BDB1}
.btn-line{background:transparent;color:#fff;border:1px solid #4A5555}
.btn-line:hover{background:#1A2120;color:#fff}
.dark .btn-line{background:transparent;color:#fff}

/* ---------- HERO ---------- */
.hero{position:relative;color:#fff;padding:0;border-bottom:4px solid var(--teal);background:#000;overflow:hidden}

/* tło: trzy zdjęcia obok siebie, każde skalowane osobno */
.hero-bg{position:absolute;inset:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;filter:brightness(.70) saturate(.85)}

/* przyciemnienie od lewej, żeby tekst był czytelny */
.hero::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(0,0,0,.80) 0%,rgba(0,0,0,.44) 42%,rgba(0,0,0,.22) 100%);
}
.hero>.wrap,.hero>*:not(.hero-bg){position:relative;z-index:2}
.hero .wrap{padding-top:84px;padding-bottom:0}
.hero h1{font-size:3.1rem;line-height:1.05;margin:0 0 20px;max-width:17ch;text-shadow:0 2px 20px rgba(0,0,0,.85)}
.hero .lead{color:#DCE3E2;text-shadow:0 1px 14px rgba(0,0,0,.8);font-size:1.2rem;max-width:54ch;margin:0 0 34px}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:120px}
.eyebrow{color:var(--teal);font-size:1.05rem;margin:0 0 14px;font-family:'Barlow Condensed',sans-serif;font-weight:600}

/* pasek z danymi z protokołu serwisowego */
.readout{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.18);background:rgba(0,0,0,.45)}
.readout div{padding:22px 20px 26px;border-right:1px solid rgba(255,255,255,.18)}
.readout div:last-child{border-right:0}
.stat-val{display:block;font-size:2rem;color:var(--teal);line-height:1}
.readout small{color:#909B99;font-size:.93rem;display:block;margin-top:6px}

/* ---------- NAGŁÓWKI SEKCJI ---------- */
h2{font-size:2.1rem;line-height:1.15;margin:0 0 10px}
.sub{color:var(--muted);margin:0 0 36px;max-width:60ch}
.page-head{background:var(--black);color:#fff;padding:54px 0 48px;border-bottom:4px solid var(--teal)}
.page-head h1{font-size:2.6rem;margin:0 0 10px}
.page-head p{color:#BAC4C3;margin:0}

/* ---------- KARTY USŁUG ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.card{background:var(--white);padding:28px 26px 30px}
.card h3{font-size:1.4rem;margin:0 0 8px}
.card p{color:var(--muted);font-size:1rem;margin:0}
.card .mark{width:34px;height:4px;background:var(--teal);margin-bottom:18px}

/* ---------- PROCES ---------- */
.steps{list-style:none;margin:0;padding:0}
.steps li{display:grid;grid-template-columns:64px 1fr;gap:20px;padding:20px 0;border-top:1px solid var(--line)}
.steps li:last-child{border-bottom:1px solid var(--line)}
.step-no{color:var(--teal-deep);font-size:1.5rem;line-height:1.1}
.dark .step-no{color:var(--teal)}
.steps h3{margin:0 0 3px;font-size:1.25rem}
.steps p{margin:0;color:var(--muted);font-size:1rem}

/* ---------- SEKCJA CIEMNA / CTA ---------- */
.dark{background:var(--black);color:#fff}
.dark h2,.dark h3{color:#fff}
.dark p{color:#BAC4C3}
.dark .sub{color:#909B99}
.dark .cards{background:#2A3130;border-color:#2A3130}
.dark .card{background:var(--black-2)}
.dark .card p{color:#95A09E}
.dark .steps li{border-color:#2A3130}
.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}

/* ---------- LISTA USŁUG (podstrona) ---------- */
.service{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:42px 0;border-top:1px solid var(--line);align-items:start}
.service:first-of-type{border-top:0}
.service h2{font-size:1.75rem;margin:0 0 12px}
.service ul{margin:16px 0 0;padding-left:20px;color:var(--muted)}
.service li{margin-bottom:6px}
.spec{background:var(--white);border-left:4px solid var(--teal);padding:22px 24px}
.spec dt{font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:1.1rem;margin-top:14px}
.spec dt:first-child{margin-top:0}
.spec dd{margin:0;color:var(--muted);font-size:1rem}

/* ---------- LOGA KLIENTÓW ---------- */
.logos{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.logos div{
  background:var(--white);aspect-ratio:3/2;display:flex;align-items:center;justify-content:center;
  padding:22px;text-align:center;
}
/* nazwa firmy widoczna, dopóki nie ma pliku z logo */
.logos span{
  font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:1.25rem;
  color:var(--ink);line-height:1.15;
}
.logos img{max-height:70px;width:auto;object-fit:contain;filter:grayscale(1);opacity:.75}
.logos div:hover img{filter:none;opacity:1}

/* ---------- KONTAKT ---------- */
.regions{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);margin-bottom:46px}
.region{background:var(--white);padding:30px 28px}
.region h3{font-size:1.5rem;margin:0 0 4px}
.region .area{color:var(--teal-deep);margin:0 0 16px;font-size:1rem}
.big-tel{font-family:'Barlow Condensed',sans-serif;font-weight:600;font-size:2rem;color:var(--ink);text-decoration:none;display:inline-block;line-height:1.1}
.big-tel:hover{color:var(--teal-deep)}
.region .mail{display:block;margin-top:8px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
form{display:grid;gap:14px}
label{font-size:.95rem;font-weight:600;color:var(--muted)}
input,textarea,select{
  font-family:inherit;font-size:1rem;padding:13px;width:100%;
  border:1px solid var(--line);background:var(--white);
}
input:focus,textarea:focus,select:focus{outline:2px solid var(--teal-deep);outline-offset:1px;border-color:var(--teal-deep)}

/* ---------- STOPKA ---------- */
footer{background:var(--black);color:#8A9593;font-size:.95rem;padding:44px 0 30px}
footer .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
footer h4{font-family:'Barlow Condensed',sans-serif;color:#fff;font-size:1.15rem;margin:0 0 10px;font-weight:600}
footer a{color:#8A9593;text-decoration:none;display:block;margin-bottom:6px}
footer a:hover{color:var(--teal)}
.foot-logo{height:92px;width:auto;margin-bottom:14px}
.copy{border-top:1px solid #262D2C;margin-top:30px;padding-top:18px;font-size:.88rem}

a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--teal);outline-offset:2px}

/* ---------- ASORTYMENT / SPRZĘT ---------- */
.kit{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.kit-item{background:var(--white);padding:26px 24px 28px;display:flex;flex-direction:column}
.kit-photo{
  height:180px;display:flex;align-items:center;justify-content:center;
  background:#F7F9F9;margin:-6px -6px 18px;padding:12px;
}
.kit-photo img{max-height:100%;width:auto;object-fit:contain}
.kit-item h3{font-size:1.3rem;margin:0 0 8px;line-height:1.2}
.kit-item p{color:var(--muted);font-size:1rem;margin:0}

/* ---------- TABLETY I TELEFONY ---------- */
@media(max-width:1000px){
  .wrap{padding:0 20px}
  .hero h1{font-size:2.6rem}
}

@media(max-width:900px){
  section{padding:56px 0}
  .kit{grid-template-columns:1fr 1fr}
  .cards{grid-template-columns:1fr 1fr}
  .readout{grid-template-columns:1fr 1fr}
  .logos{grid-template-columns:repeat(3,1fr)}
  .service,.contact-grid,.regions{grid-template-columns:1fr;gap:26px}
  footer .wrap{grid-template-columns:1fr 1fr}
  .readout div:nth-child(2){border-right:0}
  /* nagłówek: zostaje zdjęcie z ekipą i mycie osłon */
  .hero-bg{grid-template-columns:1fr 1fr}
  .hero-bg img:nth-child(1){display:none}
  .gal{grid-template-columns:1fr 1fr}
}

@media(max-width:620px){
  body{font-size:16.5px}
  section{padding:42px 0}
  .wrap{padding:0 16px}
  h2{font-size:1.65rem}

  /* nagłówek strony */
  .top .wrap{min-height:0;padding-top:12px;padding-bottom:10px;gap:10px}
  .logo img{height:46px}
  .nav{
    gap:18px;width:100%;flex-wrap:nowrap;overflow-x:auto;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .nav::-webkit-scrollbar{display:none}
  .nav a{font-size:1rem;white-space:nowrap;padding-bottom:4px}

  /* hero */
  .hero .wrap{padding-top:44px}
  .hero h1{font-size:2rem;max-width:100%}
  .hero .lead{font-size:1.05rem}
  .hero .actions{margin-bottom:56px;flex-direction:column;align-items:stretch}
  .actions .btn{width:100%;text-align:center}
  .hero-bg{grid-template-columns:1fr}
  .hero-bg img:nth-child(1),.hero-bg img:nth-child(3){display:none}
  /* na telefonie zdjęcie ma być widoczne, więc jaśniej i z cieniem tylko pod tekstem */
  .hero-bg img{filter:brightness(.85) saturate(.95)}
  .hero::after{
    background:linear-gradient(180deg,
      rgba(0,0,0,.88) 0%,
      rgba(0,0,0,.72) 30%,
      rgba(0,0,0,.30) 52%,
      rgba(0,0,0,.18) 72%,
      rgba(0,0,0,.60) 100%);
  }
  /* odstęp odsłaniający plecy z logo między tekstem a przyciskami */
  .hero .actions{margin-top:190px}
  .hero h1{text-shadow:0 2px 16px rgba(0,0,0,.95)}
  .hero .lead{text-shadow:0 1px 14px rgba(0,0,0,.95)}

  /* treść */
  .readout{grid-template-columns:1fr 1fr}
  .readout div{border-right:1px solid rgba(255,255,255,.18);padding:18px 16px 20px}
  .readout div:nth-child(even){border-right:0}
  .stat-val{font-size:1.7rem}
  .cards{grid-template-columns:1fr}
  .kit{grid-template-columns:1fr}
  .kit-photo{height:200px}
  .gal,.ba{grid-template-columns:1fr}
  .logos{grid-template-columns:1fr 1fr}
  .steps li{grid-template-columns:40px 1fr;gap:12px}
  .issues li{padding:16px 18px}
  .page-head{padding:38px 0 34px}
  .page-head h1{font-size:2rem}

  /* kontakt i formularz */
  .contact-grid{gap:30px}
  input,textarea,select{font-size:16px} /* mniejsza czcionka powoduje zoom na iPhonie */
  .big-tel{font-size:1.8rem}
  .cta .wrap{gap:20px}
  .cta .btn{width:100%;text-align:center}

  footer{padding:32px 0 26px}
  footer .wrap{grid-template-columns:1fr;gap:22px}
}

@media(max-width:380px){
  .hero h1{font-size:1.8rem}
  .readout{grid-template-columns:1fr}
  .readout div{border-right:0}
  .logos{grid-template-columns:1fr}
}

.dark .card a{color:var(--teal);text-decoration:none}
.dark .card a:hover{text-decoration:underline}