/* ============================================================
   NURT — wariant „Brutalizm"
   Paleta: beton + wapno + smoła + żółć budowlana
   Display: Anton 400 · Tekst/UI: Archivo 400/600
   Zero zaokrągleń, zero cieni. Cięcia zamiast fade'ów.
   ============================================================ */

:root {
  --wapno:     #E9E7E2;  /* off-white, tło bazowe */
  --beton:     #CDCAC3;  /* jasny beton, panele i sekcje */
  --zbrojenie: #55524B;  /* tekst przygaszony (kontrast ~6.5:1 na wapnie) */
  --smola:     #191816;  /* tusz / sekcje ciemne / fugi */
  --zolc:      #F6C700;  /* żółć budowlana — jedyny akcent */
}

/* ---------- reset / baza ---------- */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font: 400 1rem/1.65 Archivo, Arial, sans-serif;
  background: var(--wapno);
  color: var(--smola);
  border-top: 8px solid var(--zolc);   /* taśma sygnałowa */
  overflow-x: clip;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3 { font-weight: 400; }

a { color: inherit; }

::selection { background: var(--zolc); color: var(--smola); }

:focus-visible { outline: 3px solid var(--smola); outline-offset: 3px; }
.studio :focus-visible,
.site-footer :focus-visible { outline-color: var(--zolc); }

#projekty, #pracownia, #proces, #kontakt { scroll-margin-top: 5.5rem; }

.wrap {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: clamp(1.15rem, 4vw, 3rem);
}

/* ---------- skip link ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--smola);
  color: var(--zolc);
  font: 600 .85rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .14em;
  text-decoration: none;
  padding: 1em 1.4em;
}
.skip-link:focus-visible { left: 0; position: fixed; outline-color: var(--zolc); outline-offset: -6px; }

/* ---------- nagłówek ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--wapno);
  border-bottom: 3px solid var(--smola);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: 1.4rem;
  letter-spacing: .03em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--smola);
}
.brand span { color: var(--zolc); }        /* kropka sygnałowa */
.brand-mark { width: 32px; height: auto; }

.nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  list-style: none;
}

.nav a {
  display: inline-block;
  font: 600 .8rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .16em;
  text-decoration: none;
  color: var(--smola);
  padding: .6em 0;
  border-bottom: 3px solid transparent;
}
.nav a:hover { border-bottom-color: var(--smola); }

.nav a.nav-cta {
  background: var(--smola);
  color: var(--wapno);
  padding: .8em 1.3em;
  border-bottom: none;
}
.nav a.nav-cta:hover { background: var(--zolc); color: var(--smola); }

.nav-toggle {
  display: none;
  font: 600 .8rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--smola);
  background: var(--wapno);
  border: 3px solid var(--smola);
  padding: .65em 1em;
  cursor: pointer;
}
.nav-toggle[aria-expanded="true"] { background: var(--smola); color: var(--wapno); }

/* ---------- etykiety sekcji (szyld sygnałowy) ---------- */

.sec-no, .eyebrow {
  display: block;
  width: fit-content;
  max-width: 100%;
  font: 600 .75rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .22em;
  background: var(--zolc);
  color: var(--smola);
  padding: .55em .9em .45em;
  margin-bottom: 1.1rem;
}

h2 {
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: clamp(2.1rem, 5.5vw, 4rem);
  line-height: .95;
  text-transform: uppercase;
  letter-spacing: .01em;
}

/* ---------- hero ---------- */

.hero {
  background: var(--beton);
  border-bottom: 3px solid var(--smola);
  padding-bottom: clamp(2.5rem, 7vw, 6rem);
}

.hero-img {
  width: min(88%, 1500px);
  margin-left: auto;
  border-left: 3px solid var(--smola);
  border-bottom: 3px solid var(--smola);
}

.hero-panel {
  position: relative;
  z-index: 2;
  margin-top: calc(-1 * clamp(4.5rem, 18vw, 15rem));
}

.hero-panel .wrap {
  max-width: min(47rem, calc(100% - 2.25rem));
  margin: 0 auto 0 clamp(1rem, 7vw, 7rem);
  background: var(--wapno);
  border: 3px solid var(--smola);
  padding: clamp(1.5rem, 4vw, 3rem);
}

h1 {
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: clamp(2.35rem, 6.6vw, 5.4rem);
  line-height: 1.06;
  text-transform: uppercase;
  letter-spacing: .01em;
  margin: .4rem 0 1.1rem;
}

h1 em {
  font-style: normal;
  background: var(--zolc);
  padding: 0 .12em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.lead {
  max-width: 44ch;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--zbrojenie);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-block;
  font: 600 .85rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .14em;
  text-decoration: none;
  background: var(--smola);
  color: var(--wapno);
  border: 3px solid var(--smola);
  padding: .95em 1.6em;
}
.btn:hover { background: var(--zolc); color: var(--smola); }

.btn-line { background: transparent; color: var(--smola); }
.btn-line:hover { background: var(--smola); color: var(--wapno); }

/* ---------- projekty ---------- */

.projects { padding-top: clamp(3.5rem, 8vw, 7rem); }

.project { margin-top: clamp(3.5rem, 9vw, 7rem); }
.project + .project {
  border-top: 3px solid var(--smola);   /* dylatacja między realizacjami */
  padding-top: clamp(3rem, 8vw, 6rem);
}

.project-head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
}

/* sygnatura: stempel numeryczny prefabrykatu */
.project-no {
  grid-row: 1;
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: clamp(5.5rem, 15vw, 13rem);
  line-height: .78;
  color: var(--beton);
  -webkit-text-stroke: 3px var(--smola);
  user-select: none;
}

.project-head > div {
  grid-row: 1;
  position: relative;
  z-index: 2;
  max-width: 40rem;
  background: var(--wapno);
  border: 3px solid var(--smola);
  padding: clamp(1.25rem, 3vw, 2rem);
  margin-left: calc(-1 * clamp(1.5rem, 5vw, 4.5rem));
  margin-top: clamp(1.75rem, 5vw, 4rem);
}

.project:nth-of-type(even) .project-head { grid-template-columns: 1fr auto; }
.project:nth-of-type(even) .project-no { grid-column: 2; justify-self: end; }
.project:nth-of-type(even) .project-head > div {
  grid-column: 1;
  justify-self: end;
  margin-left: 0;
  margin-right: calc(-1 * clamp(1.5rem, 5vw, 4.5rem));
}

.project h3 {
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: clamp(1.55rem, 3.2vw, 2.4rem);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: .01em;
  margin-bottom: .6rem;
}

.project-tags {
  font: 600 .72rem/1.4 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--zbrojenie);
  margin-bottom: .85rem;
}

.project-head p:last-child { color: var(--zbrojenie); max-width: 58ch; }

/* galeria: panele prefabrykowane z czarną fugą */
.gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: clamp(150px, 22vw, 330px);
  grid-auto-flow: row;
  gap: 3px;
  background: var(--smola);
  border: 3px solid var(--smola);
  max-width: 1600px;
  margin: clamp(1.5rem, 4vw, 3rem) auto 0;
}

.gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  grid-column: span 4;
}

.gallery .g-wide { grid-column: 1 / span 8; grid-row: span 2; }

.project:nth-of-type(even) .gallery .g-wide { grid-column: 5 / -1; grid-row: 1 / span 2; }

/* domknięcie ostatniego rzędu (dzieci 4..n idą trójkami) */
.gallery img:last-child:nth-child(3n+1) { grid-column: span 12; grid-row: span 2; } /* samotny → pełny rząd */
.gallery img:last-child:nth-child(3n+2) { grid-column: span 8; }  /* para → 4 + 8 */

/* monochrom: kolor wraca dopiero pod kursorem (patrz: ryzyko) */
@media (hover: hover) {
  .gallery img:not(.g-wide) {
    filter: grayscale(1) contrast(1.04);
    transition: filter .14s steps(2, end);
  }
  .gallery img:not(.g-wide):hover { filter: none; }
}

/* ---------- pracownia ---------- */

.studio {
  background: var(--smola);
  color: var(--wapno);
  margin-top: clamp(3.5rem, 9vw, 7rem);
  padding-block: clamp(3.5rem, 9vw, 7.5rem);
}

.studio-grid {
  display: grid;
  grid-template-columns: minmax(200px, 340px) 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.studio-logo { width: clamp(140px, 18vw, 240px); margin-top: 1.4rem; }

.studio .big {
  font: 600 clamp(1.35rem, 2.6vw, 1.9rem)/1.35 Archivo, Arial, sans-serif;
  margin-bottom: 1.25rem;
}

.studio p:not(.big) { color: #C9C5BC; max-width: 58ch; }

/* ---------- proces ---------- */

.process {
  background: var(--beton);
  border-bottom: 3px solid var(--smola);
  padding-block: clamp(3.5rem, 9vw, 7rem);
}

.steps {
  list-style: none;
  counter-reset: krok;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
  margin-top: clamp(2rem, 5vw, 3.5rem);
}

.steps li {
  counter-increment: krok;
  background: var(--wapno);
  border: 3px solid var(--smola);
  padding: 1.5rem 1.5rem 2rem;
}

.steps li::before {
  content: counter(krok, decimal-leading-zero);
  display: inline-block;
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: 2.6rem;
  line-height: 1;
  background: var(--smola);
  color: var(--wapno);
  padding: .16em .3em .08em;
  margin-bottom: 1.4rem;
}

.steps h3 {
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: 1.3rem;
  text-transform: uppercase;
  letter-spacing: .01em;
  margin-bottom: .6rem;
}

.steps p { font-size: .95rem; color: var(--zbrojenie); }

/* schodkowanie slabów — mechaniczny rytm biegu schodów */
@media (min-width: 1021px) {
  .steps li:nth-child(2) { margin-top: 2.5rem; }
  .steps li:nth-child(3) { margin-top: 5rem; }
  .steps li:nth-child(4) { margin-top: 7.5rem; }
}

/* ---------- kontakt ---------- */

.contact {
  background: var(--zolc);
  padding-block: clamp(3.5rem, 9vw, 7rem);
}

.contact .sec-no { background: var(--smola); color: var(--zolc); }

.contact-person {
  font: 600 .85rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .2em;
  margin-top: 2.25rem;
}

.contact-phone {
  display: block;
  width: max-content;
  max-width: 100%;
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: clamp(3.2rem, 10.5vw, 8.5rem);
  line-height: .95;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--smola);
  margin-top: .75rem;
  padding: 0 .06em;
}
.contact-phone:hover { background: var(--smola); color: var(--zolc); }

.contact-mail {
  display: inline-block;
  font: 600 clamp(1.05rem, 2.4vw, 1.45rem)/1.2 Archivo, Arial, sans-serif;
  color: var(--smola);
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
  margin-top: 1.1rem;
}
.contact-mail:hover { background: var(--smola); color: var(--zolc); text-decoration: none; }

.contact-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(200px, 1fr));
  gap: 2rem;
  max-width: 760px;
  border-top: 3px solid var(--smola);
  margin-top: 3.25rem;
  padding-top: 1.75rem;
}

.contact-meta h3 {
  font: 600 .75rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .2em;
  margin-bottom: .6rem;
}

.contact-meta p { font-size: .95rem; }

/* ---------- stopka ---------- */

.site-footer {
  background: var(--smola);
  color: #C9C5BC;
  border-top: 3px solid var(--smola);
  padding-block: 1.75rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  font-size: .85rem;
}

.footer-legal { display: flex; gap: 1.5rem; }

.site-footer a {
  color: var(--wapno);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.site-footer a:hover { color: var(--zolc); }

/* ---------- podstrony prawne ---------- */

.legal { padding-block: clamp(3rem, 7vw, 5.5rem); }

.legal .wrap { max-width: 860px; }

.legal h1 {
  font-family: Anton, 'Arial Narrow', sans-serif;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: .95;
  text-transform: uppercase;
  margin: .4rem 0 .9rem;
}

.legal-meta {
  font: 600 .78rem/1 Archivo, Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--zbrojenie);
  border-bottom: 3px solid var(--smola);
  padding-bottom: 1.4rem;
  margin-bottom: 2.5rem;
}

.legal h2 {
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  line-height: 1.05;
  border-left: 8px solid var(--zolc);
  padding-left: .75rem;
  margin: 2.5rem 0 1rem;
}

.legal p { margin-bottom: 1rem; max-width: 72ch; }

.legal ul {
  list-style: square;
  margin-bottom: 1rem;
  padding-left: 1.4rem;
  max-width: 70ch;
}
.legal li { margin-bottom: .55rem; }
.legal li::marker { color: var(--zolc); }

.legal a {
  color: var(--smola);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.legal a:hover { background: var(--zolc); }

/* ---------- odsłony (JS dodaje .rv, obserwator .on) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .rv { opacity: 0; transform: translateY(16px); }
  .rv.on {
    opacity: 1;
    transform: none;
    transition: opacity .26s steps(3, end), transform .26s steps(3, end);
  }
}

/* ---------- responsywność ---------- */

@media (max-width: 1020px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .studio-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 760px) {

  .nav-toggle { display: inline-block; }

  .nav-main {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--wapno);
    border-bottom: 3px solid var(--smola);
    padding: .25rem 1.15rem 1.15rem;
  }
  .nav-main.open { display: flex; }
  .nav-main li + li { border-top: 2px solid var(--beton); }
  .nav-main a { display: block; padding: 1em 0; border-bottom: none; }
  .nav-main a.nav-cta { margin-top: .75rem; text-align: center; }

  .hero-img { width: 100%; border-left: none; }
  .hero-panel { margin-top: -4rem; }
  .hero-panel .wrap { margin-left: auto; margin-right: 1.1rem; }

  .project-head,
  .project:nth-of-type(even) .project-head { grid-template-columns: 1fr; }
  .project-no,
  .project:nth-of-type(even) .project-no {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }
  .project-head > div,
  .project:nth-of-type(even) .project-head > div {
    grid-column: 1;
    grid-row: auto;
    justify-self: stretch;
    margin: -2.1rem 0 0 1.4rem;
  }

  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: minmax(130px, 30vw); }
  .gallery img { grid-column: span 1; }
  .gallery img:last-child:nth-child(3n+1),
  .gallery img:last-child:nth-child(3n+2) { grid-column: span 1; grid-row: auto; }
  .gallery img:last-child:nth-child(even) { grid-column: span 2; }
  .project .gallery .g-wide,
  .project:nth-of-type(even) .gallery .g-wide { grid-column: 1 / -1; grid-row: auto / span 2; }

  .steps { grid-template-columns: 1fr; }

  .contact-meta { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}