/* ==========================================================================
   NURT — wariant „Magazyn”
   Duch prestiżowego magazynu o architekturze: kremowy papier, atramentowa
   czerń, akcent cyjanotypii (błękit pruski architektonicznych światłokopii).
   Fraunces (serif display) + Inter (grotesk tekstowy).
   ========================================================================== */

:root {
  /* Paleta */
  --papier:        #F5F1E6;  /* kremowy papier */
  --karton:        #ECE6D4;  /* głębszy ton papieru, plansze */
  --atrament:      #1B1813;  /* ciepła czerń drukarska */
  --grafit:        #5C564A;  /* ołówkowa szarość metadanych */
  --cyjanotypia:   #2B556B;  /* akcent — błękit pruski światłokopii */
  --linia:         #CFC6B0;  /* linie pomocnicze */
  --papier-mdly:   #B9B096;  /* metadane na atramencie */
  --papier-tekst:  #E6E0CE;  /* tekst akapitowy na atramencie */

  /* Typografia */
  --serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --sans:  'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --fs-hero:  clamp(2.35rem, 5.2vw, 4.1rem);
  --fs-h2:    clamp(1.7rem, 3.4vw, 2.6rem);
  --fs-h3:    clamp(1.45rem, 2.8vw, 2.15rem);
  --fs-num:   clamp(2.9rem, 6.5vw, 4.8rem);
  --fs-meta:  0.72rem;

  /* Rytm */
  --sekcja: clamp(4rem, 9vw, 7.5rem);
  --rule-heavy: 4px solid var(--atrament);
}

/* --- Baza ------------------------------------------------------------- */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--papier);
  color: var(--atrament);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 600; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--cyjanotypia); }

::selection { background: var(--cyjanotypia); color: var(--papier); }

:focus-visible {
  outline: 2px solid var(--cyjanotypia);
  outline-offset: 3px;
}

.wrap {
  max-width: 1220px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2.5rem);
}

/* Metadane — wspólny wzorzec „podpisu drukarskiego” */
.eyebrow, .sec-no, .folio, .project-tags, .cover-caption, .toc-count,
.toc-tags, .contact-person, .contact-meta h3, .footer-inner, .nav a {
  font-family: var(--sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--atrament);
  color: var(--papier);
  padding: 0.7rem 1.2rem;
  text-decoration: none;
}
.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

/* --- Winieta / masthead ------------------------------------------------ */

.site-header {
  border-top: 5px solid var(--atrament);
  border-bottom: 1px solid var(--atrament);
  background: var(--papier);
}

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 1.15rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.65rem;
  letter-spacing: 0.05em;
  color: var(--atrament);
  text-decoration: none;
}
.brand span { color: var(--cyjanotypia); }
.brand-mark { width: 30px; height: auto; }

.site-header nav { width: 100%; }

.nav {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0.6rem 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem clamp(1rem, 4vw, 2.4rem);
  border-top: 1px solid var(--linia);
}

.nav a {
  color: var(--atrament);
  text-decoration: none;
  padding: 0.15rem 0.1rem;
}
.nav a:hover { color: var(--cyjanotypia); }
.nav .nav-cta { color: var(--cyjanotypia); }
.nav .nav-cta:hover { color: var(--atrament); }

/* --- Hero: okładka ------------------------------------------------------ */

.hero { padding-top: clamp(2.2rem, 5.5vw, 4.5rem); }

.cover-grid {
  display: grid;
  grid-template-areas: "figure" "text";
  gap: clamp(1.6rem, 4vw, 3.2rem);
  align-items: end;
}
.cover-figure { grid-area: figure; position: relative; }
.cover-text   { grid-area: text; }

@media (min-width: 920px) {
  .cover-grid {
    grid-template-areas: "text figure";
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

.hero-img {
  width: 100%;
  border: 1px solid var(--atrament);
}

.cover-caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--grafit);
  border-bottom: 1px solid var(--linia);
  padding: 0.55rem 0;
  margin: 0;
}

.cover-spine {
  position: absolute;
  top: 0;
  right: -2.4rem;
  writing-mode: vertical-rl;
  font-family: var(--sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--grafit);
  display: none;
}
@media (min-width: 1330px) { .cover-spine { display: block; } }

.eyebrow { color: var(--cyjanotypia); margin: 0 0 1.1rem; }

.cover-text h1 {
  font-size: var(--fs-hero);
  line-height: 1.04;
  letter-spacing: -0.01em;
}
.cover-text h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--cyjanotypia);
}

.lead {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.55;
  color: var(--grafit);
  max-width: 34ch;
  margin: 1.3rem 0 0;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
  margin-top: 1.8rem;
}

.btn {
  font-family: var(--sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--atrament);
  text-decoration: none;
  border-bottom: 2px solid var(--cyjanotypia);
  padding-bottom: 0.35rem;
}
.btn::after { content: " \2192"; color: var(--cyjanotypia); }
.btn:hover { color: var(--cyjanotypia); }
.btn-line { border-bottom-color: var(--linia); }
.btn-line::after { content: none; }
.btn-line:hover { border-bottom-color: var(--cyjanotypia); }

/* --- Spis treści -------------------------------------------------------- */

.toc {
  margin-top: clamp(2.6rem, 6vw, 4.2rem);
}

.toc-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.9rem 0 0.7rem;
  border-top: var(--rule-heavy);
}
.toc-title-h {
  font-size: 1.35rem;
  font-style: italic;
  font-weight: 400;
}
.toc-count { color: var(--grafit); margin: 0; }

.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--atrament);
}
@media (min-width: 860px) {
  .toc ol { column-count: 2; column-gap: clamp(2rem, 5vw, 4rem); }
  .toc li { break-inside: avoid; }
}

.toc a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--linia);
  text-decoration: none;
  color: var(--atrament);
}
.toc-no {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--cyjanotypia);
  min-width: 2ch;
}
.toc-name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.02rem;
  line-height: 1.3;
}
.toc a:hover .toc-name { color: var(--cyjanotypia); font-style: italic; }
.toc-dots {
  flex: 1 1 1.5rem;
  border-bottom: 1px dotted var(--grafit);
  transform: translateY(-0.28em);
  min-width: 1.5rem;
}
.toc-tags {
  color: var(--grafit);
  letter-spacing: 0.1em;
  text-align: right;
  flex-shrink: 0;
}
@media (max-width: 600px) { .toc-tags { display: none; } }

/* --- Nagłówki sekcji ---------------------------------------------------- */

.projects h2, .process h2, .contact h2, .studio h2, .legal h1 {
  font-size: var(--fs-h2);
  line-height: 1.12;
}
.projects h2, .process h2, .contact h2 {
  border-top: var(--rule-heavy);
  padding-top: 1rem;
}

.sec-no {
  display: block;
  color: var(--cyjanotypia);
  margin-bottom: 0.85rem;
}

/* --- Projekty ------------------------------------------------------------ */

.projects { padding-block: var(--sekcja); }

.project { margin-top: clamp(3.6rem, 8vw, 6.5rem); scroll-margin-top: 1.5rem; }

.project-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem clamp(1.4rem, 4vw, 3rem);
  align-items: start;
  margin-bottom: clamp(1.2rem, 3vw, 1.9rem);
}

.folio {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--grafit);
  border-top: 1px solid var(--atrament);
  padding-top: 0.5rem;
}
.folio span:last-child { text-align: right; }
@media (max-width: 600px) { .folio span:last-child { display: none; } }

.project-no {
  font-family: var(--serif);
  font-weight: 600;
  font-size: var(--fs-num);
  line-height: 0.85;
  color: var(--cyjanotypia);
  letter-spacing: -0.02em;
}

.project-head h3 { font-size: var(--fs-h3); line-height: 1.1; }

.project-tags {
  color: var(--grafit);
  letter-spacing: 0.14em;
  margin: 0.6rem 0 0.95rem;
}

.project-head p:last-child { max-width: 60ch; }

/* Rozkładówki galerii */
.gallery {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(0.45rem, 1.2vw, 0.85rem);
  padding-inline: clamp(0.45rem, 1.2vw, 0.85rem);
  margin-top: clamp(1rem, 2.5vw, 1.6rem);
}
.gallery img { grid-column: span 3; }
.gallery .g-wide,
.gallery img:nth-child(5n + 4),
.gallery img:last-child:nth-child(5n + 2),
.gallery img:last-child:nth-child(5n) {
  grid-column: 1 / -1;
}
@media (max-width: 560px) {
  .gallery img { grid-column: 1 / -1; }
}

/* --- Pracownia: plansza atramentowa -------------------------------------- */

.studio {
  background: var(--atrament);
  color: var(--papier-tekst);
  padding-block: var(--sekcja);
}

.studio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}
@media (min-width: 800px) {
  .studio-grid { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); }
}

.studio .sec-no { color: var(--papier-mdly); border-top: 4px solid var(--papier); padding-top: 1rem; }
.studio-logo { width: clamp(120px, 16vw, 190px); height: auto; margin-top: 0.4rem; }

.studio .big {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  line-height: 1.4;
  color: var(--papier);
  margin-bottom: 1.2rem;
}
.studio p { max-width: 58ch; }

/* --- Proces --------------------------------------------------------------- */

.process {
  padding-block: var(--sekcja);
  background: var(--karton);
}

.steps {
  list-style: none;
  counter-reset: krok;
  margin: clamp(2rem, 5vw, 3.2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 2.6rem);
}
@media (min-width: 620px)  { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .steps { grid-template-columns: repeat(4, 1fr); } }

.steps li {
  counter-increment: krok;
  border-top: 1px solid var(--atrament);
  padding-top: 1.1rem;
}
.steps li::before {
  content: counter(krok, decimal-leading-zero);
  display: block;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 2rem;
  line-height: 1;
  color: var(--cyjanotypia);
  margin-bottom: 0.7rem;
}
.steps h3 { font-size: 1.18rem; margin-bottom: 0.5rem; }
.steps p { color: #3E3A30; font-size: 0.95rem; }

/* --- Kontakt: kolofon ------------------------------------------------------ */

.contact { padding-block: var(--sekcja); }

.contact-person { color: var(--grafit); margin: clamp(1.8rem, 4vw, 2.6rem) 0 0.4rem; }

.contact-phone {
  display: inline-block;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2rem, 6vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--atrament);
  text-decoration: none;
}
.contact-phone:hover { color: var(--cyjanotypia); }

.contact-mail {
  display: block;
  width: fit-content;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  color: var(--cyjanotypia);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  margin-top: 0.5rem;
}
.contact-mail:hover { color: var(--atrament); }

.contact-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem clamp(2rem, 5vw, 4rem);
  max-width: 720px;
  margin-top: clamp(2.2rem, 5vw, 3.2rem);
  border-top: 1px solid var(--atrament);
  padding-top: 1.4rem;
}
@media (min-width: 560px) { .contact-meta { grid-template-columns: 1fr 1fr; } }

.contact-meta h3 {
  font-family: var(--sans);
  color: var(--grafit);
  margin-bottom: 0.5rem;
}
.contact-meta p { font-size: 0.95rem; }

/* --- Stopka ----------------------------------------------------------------- */

.site-footer {
  border-top: 5px solid var(--atrament);
  padding: 1.2rem 0 2.2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem 2rem;
  color: var(--grafit);
  letter-spacing: 0.12em;
}
.footer-inner a {
  color: var(--atrament);
  text-decoration: none;
  border-bottom: 1px solid var(--linia);
  padding-bottom: 0.15rem;
}
.footer-inner a:hover { color: var(--cyjanotypia); border-bottom-color: var(--cyjanotypia); }
.footer-legal { display: flex; gap: 1.6rem; }

/* --- Podstrony prawne --------------------------------------------------------- */

.legal { padding-block: clamp(2.8rem, 7vw, 5rem) var(--sekcja); }
.legal .wrap { max-width: 840px; }

.legal .sec-no {
  border-top: var(--rule-heavy);
  padding-top: 1rem;
  margin-bottom: 0.85rem;
}
.legal h1 { margin-bottom: 0.6rem; }

.legal-meta {
  font-family: var(--serif);
  font-style: italic;
  color: var(--grafit);
  border-bottom: 1px solid var(--linia);
  padding-bottom: 1.2rem;
  margin-bottom: 2.4rem;
}

.legal h2 {
  font-size: 1.32rem;
  line-height: 1.25;
  border-top: 1px solid var(--linia);
  padding-top: 1.3rem;
  margin: 2.2rem 0 0.8rem;
}

.legal p, .legal li { line-height: 1.7; }
.legal ul { margin: 0 0 1.2em; padding-left: 1.25rem; }
.legal li { margin-bottom: 0.55em; }
.legal li::marker { color: var(--cyjanotypia); }
.legal a { text-underline-offset: 3px; }
.legal a:hover { color: var(--atrament); }
.legal strong { font-weight: 500; letter-spacing: 0.01em; }

/* --- Ruch: przewracanie stron --------------------------------------------------- */

@media (prefers-reduced-motion: no-preference) {
  .rv {
    opacity: 0;
    transform: translateY(18px);
    transition:
      opacity 0.65s ease-out,
      transform 0.65s cubic-bezier(0.22, 0.61, 0.36, 1);
  }
  .rv-in {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}