/* ==========================================================================
   iPrintWall — layout.css
   Kontenery, siatka, header, nawigacja, stopka, preloader, animacje wejscia.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Kontenery i sekcje
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide { max-width: var(--maxw-wide); }
.container--narrow { max-width: 880px; }

.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: clamp(56px, 7vw, 96px); }

/* Sekcja na jasniejszym tle. Zamiast twardej krawedzi tlo wtapia sie
   w kolor strony na gorze i na dole - dzieki temu przejscie miedzy
   sekcjami jest miekkie, a nie skokowe. */
.section--raise {
  background: linear-gradient(180deg,
    var(--bg) 0,
    var(--bg-raise) clamp(64px, 11vw, 170px),
    var(--bg-raise) calc(100% - clamp(64px, 11vw, 170px)),
    var(--bg) 100%);
}

/* Granica sekcji: kreska glowicy drukujacej przejezdza po niej
   w momencie, gdy sekcja wchodzi w kadr. */
.section--line { border-top: 1px solid var(--line); }
.section--line::before {
  content: "";
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 2px;
  background: var(--print-line-h);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.1s var(--ease);
  z-index: 2;
}
.section--line.is-edge-in::before { transform: scaleX(1); }
.no-js .section--line::before { transform: scaleX(1); }

/* Naglowek sekcji */
.section-head { max-width: 780px; margin-bottom: clamp(40px, 5vw, 72px); }
.section-head--wide { max-width: 980px; }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }
.section-head--center .t-lead { margin-inline: auto; }
.section-head .t-lead { margin-top: 20px; }

.section-head--split {
  max-width: none;
  display: grid;
  gap: clamp(20px, 3vw, 56px);
  align-items: end;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .section-head--split { grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); }
  .section-head--split > :last-child { padding-bottom: 6px; }
}

/* Siatki */
.grid { display: grid; gap: clamp(16px, 2vw, 28px); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 290px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr)); }

.cluster { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* Sygnaturowa kreska gradientowa */
.print-rule {
  height: 2px;
  background: var(--print-line-h);
  border: 0;
  width: 72px;
}

/* --------------------------------------------------------------------------
   2. Preloader
   Dziala rowniez bez JS - animacja CSS sama sie konczy.
   Pasek wypelnia sie 1,2 s, potem calosc powoli zanika przez 3 s.
   -------------------------------------------------------------------------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: var(--z-preloader);
  display: grid;
  place-items: center;
  background: #000;
  animation: preloader-out 3s var(--ease) 1.2s forwards;
}
.preloader__inner {
  display: grid;
  justify-items: center;
  gap: 26px;
  padding-inline: 24px;
}
.preloader__logo {
  width: clamp(150px, 34vw, 230px);
  height: auto;
  opacity: 0;
  animation: preloader-logo 0.9s var(--ease) 0.1s forwards;
}
.preloader__track {
  width: clamp(150px, 34vw, 230px);
  height: 2px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}
.preloader__bar {
  height: 100%;
  width: 100%;
  background: var(--print-line-h);
  transform: scaleX(0);
  transform-origin: left;
  animation: preloader-bar 1.2s var(--ease-in-out) 0.15s forwards;
}
.preloader__label {
  font-size: 0.6875rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--fg-dim);
  opacity: 0;
  animation: preloader-logo 0.8s var(--ease) 0.5s forwards;
}

/* Przejscie miedzy podstronami: preloader jest pomijany calkowicie.
   Klase ustawia skrypt w <head>, zanim cokolwiek zdazy sie narysowac. */
.no-preloader .preloader { display: none; }

@keyframes preloader-logo { to { opacity: 1; } }
@keyframes preloader-bar { to { transform: scaleX(1); } }
@keyframes preloader-out {
  to { opacity: 0; visibility: hidden; pointer-events: none; }
}

@media (prefers-reduced-motion: reduce) {
  /* Krocej, ale nadal plynnie - to samo zanikanie, bez ruchu paska */
  .preloader { animation: preloader-out 1.4s var(--ease) 0.8s forwards; }
  .preloader__bar { transform: scaleX(1); animation: none; }
}

/* --------------------------------------------------------------------------
   3. Pasek postepu przewijania
   -------------------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 100%;
  z-index: calc(var(--z-header) + 2);
  background: var(--print-line-h);
  transform: scaleX(0);
  transform-origin: left;
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   4. Header
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: var(--z-header);
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease);
}
.header::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent);
  opacity: 1;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
  z-index: -1;
}
.header.is-scrolled {
  background: rgba(8, 8, 10, 0.82);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line);
}
.header.is-scrolled::after { opacity: 0; }

.header__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 76px;
  transition: height 0.35s var(--ease);
}
.header.is-scrolled .header__inner { height: 66px; }

.brand { display: flex; align-items: center; flex: none; }
.brand img { width: auto; height: 36px; }
@media (min-width: 1024px) { .brand img { height: 44px; } }

/* Nawigacja desktop */
.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: clamp(2px, 1vw, 16px); }
.nav__link {
  position: relative;
  display: block;
  padding: 10px 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--fg-muted);
  transition: color 0.25s var(--ease);
  white-space: nowrap;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 8px; right: 8px;
  bottom: 3px;
  height: 2px;
  background: var(--print-line-h);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav__link:hover { color: var(--fg); }
.nav__link:hover::after,
.nav__link[aria-current="page"]::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--fg); }

.header__cta { flex: none; margin-left: 10px; }

/* Przelacznik menu mobilnego */
.nav-toggle {
  display: none;
  width: 46px; height: 46px;
  margin-left: auto;
  align-items: center;
  justify-content: center;
  flex: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  background: rgba(255, 255, 255, 0.04);
}
.nav-toggle__bars { position: relative; width: 20px; height: 12px; }
.nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--fg);
  transition: transform 0.32s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle__bars span:nth-child(1) { top: 0; }
.nav-toggle__bars span:nth-child(2) { top: 5px; }
.nav-toggle__bars span:nth-child(3) { top: 10px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* Panel mobilny */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  background: var(--bg);
  padding: 92px var(--gutter) 32px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.3s var(--ease), transform 0.35s var(--ease), visibility 0.3s;
}
.mobile-menu.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.mobile-menu__list { display: flex; flex-direction: column; }
.mobile-menu__list li { border-bottom: 1px solid var(--line); }
.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 2px;
  font-size: clamp(1.25rem, 5vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  min-height: 60px;
}
.mobile-menu__link[aria-current="page"] { color: var(--accent-bright); }
.mobile-menu__link i {
  font-style: normal;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--fg-dim);
  letter-spacing: 0.14em;
}
.mobile-menu__foot { margin-top: auto; padding-top: 34px; display: grid; gap: 18px; }
.mobile-menu__contact { display: grid; gap: 8px; font-size: 0.9375rem; color: var(--fg-muted); }
.mobile-menu__contact a { color: var(--fg); font-weight: 600; }

@media (max-width: 1079px) {
  .nav { display: none; }
  .header__cta { margin-left: auto; }
  .nav-toggle { display: flex; margin-left: 12px; }
}
@media (max-width: 599px) {
  .header .header__cta { display: none; }
  .nav-toggle { margin-left: auto; }
}
@media (min-width: 1080px) {
  .mobile-menu { display: none; }
}

/* --------------------------------------------------------------------------
   5. Stopka
   -------------------------------------------------------------------------- */
.footer {
  background: #050506;
  border-top: 1px solid var(--line);
  padding-top: clamp(56px, 7vw, 96px);
}
.footer__grid {
  display: grid;
  gap: clamp(34px, 4vw, 56px);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .footer__grid { grid-template-columns: repeat(3, 1fr); }
  .footer__brand { grid-column: 1 / -1; }
}
@media (min-width: 1024px) {
  .footer__grid { grid-template-columns: minmax(0, 1.45fr) repeat(3, minmax(0, 1fr)); }
  .footer__brand { grid-column: auto; }
}
.footer__brand img { height: 40px; width: auto; margin-bottom: 22px; }
.footer__brand p { color: var(--fg-muted); font-size: 0.9375rem; max-width: 44ch; line-height: 1.7; }
.footer__title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 18px;
}
.footer__list { display: grid; gap: 11px; }
.footer__list a, .footer__list span {
  font-size: 0.9375rem;
  color: var(--fg-muted);
  transition: color 0.2s var(--ease);
  display: inline-block;
}
.footer__list a:hover { color: var(--accent-bright); }

.socials { display: flex; gap: 10px; margin-top: 26px; }
.social-btn {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  color: var(--fg-muted);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease),
              background-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.social-btn:hover {
  color: #fff;
  border-color: transparent;
  background: var(--accent);
  transform: translateY(-2px);
}
.social-btn svg { width: 18px; height: 18px; fill: currentColor; }

.footer__bottom {
  margin-top: clamp(44px, 5vw, 72px);
  border-top: 1px solid var(--line);
  padding-block: 24px 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--fg-dim);
}
.footer__bottom nav { display: flex; flex-wrap: wrap; gap: 12px 22px; }
.footer__bottom a { transition: color 0.2s var(--ease); }
.footer__bottom a:hover { color: var(--fg); }

/* --------------------------------------------------------------------------
   6. Animacje wejscia (IntersectionObserver dodaje .is-visible)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
  transition-delay: var(--d, 0ms);
}
.reveal.is-visible { opacity: 1; transform: none; }
.reveal--fade { transform: none; }
.reveal--left  { transform: translateX(-52px); }
.reveal--right { transform: translateX(52px); }

/* Bez JS wszystko jest widoczne od razu */
.no-js .reveal { opacity: 1; transform: none; }
.no-js .preloader { display: none; }

/* --------------------------------------------------------------------------
   7. Leniwe ladowanie obrazkow
   Klase .media-fade dodaje JS wylacznie tym obrazkom, ktore w danym momencie
   nie sa jeszcze wczytane. Dzieki temu przy wylaczonym lub uszkodzonym JS
   zaden obrazek nie zostaje ukryty.
   -------------------------------------------------------------------------- */
.media-fade { opacity: 0; transition: opacity 0.65s var(--ease); }
.media-fade.is-ready { opacity: 1; }

/* Delikatne tlo pod wczytujacym sie zdjeciem - zamiast czarnej dziury */
.gallery__figure,
.split__media,
.compare,
.video-frame,
.cta-band__media { background-color: var(--bg-raise); }

/* --------------------------------------------------------------------------
   8. Parallax na pelnoekranowych zdjeciach (hero i baner CTA)
   -------------------------------------------------------------------------- */
[data-parallax] { will-change: transform; }

/* --------------------------------------------------------------------------
   9. Przejscia miedzy podstronami
   Wejscie: tresc wplywa z dolu (tylko gdy nie ma preloadera, czyli przy
   nawigacji wewnatrz strony). Wyjscie: cala strona lagodnie znika,
   zanim przegladarka przejdzie pod nowy adres.
   -------------------------------------------------------------------------- */
.no-preloader main,
.no-preloader .footer { animation: page-enter 0.55s var(--ease) both; }
.no-preloader .footer { animation-delay: 0.06s; }

@keyframes page-enter {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

.is-leaving main,
.is-leaving .header,
.is-leaving .footer {
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity 0.26s var(--ease), transform 0.26s var(--ease);
}

@media (prefers-reduced-motion: reduce) {
  @keyframes page-enter { from { opacity: 0; } to { opacity: 1; } }
}

/* Przy ograniczonych animacjach blok tylko sie rozjasnia - przesuniecie
   wycina regula w base.css */