/* ==========================================================================
   EFEKTO - layout.css
   Siatka, rytm sekcji, nawigacja, stopka.
   ========================================================================== */

.wrap        { width: var(--wrap); margin-inline: auto; }
.wrap-narrow { width: var(--wrap-narrow); margin-inline: auto; }

/* ==========================================================================
   TLO STRONY: poswiata + siec polaczen, przyklejone do okna.
   Sekcje sa przezroczyste, zeby tlo bylo widac przez cala strone.
   Sekcje z wlasnym data-theme (np. jasne wstawki) maja wlasne tlo.
   ========================================================================== */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.backdrop__glow {
  position: absolute;
  inset: -25%;
  background:
    radial-gradient(38% 32% at 78% 20%, var(--glow-a), transparent 70%),
    radial-gradient(34% 30% at 14% 78%, var(--glow-b), transparent 70%),
    radial-gradient(28% 24% at 50% 50%, var(--glow-b), transparent 75%);
  animation: poswiata 38s ease-in-out infinite alternate;
  will-change: transform;
}
@keyframes poswiata {
  0%   { transform: translate3d(0, 0, 0) rotate(0deg); }
  50%  { transform: translate3d(-4%, 3%, 0) rotate(6deg); }
  100% { transform: translate3d(3%, -2%, 0) rotate(-4deg); }
}
.backdrop__mesh { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

main, .footer { position: relative; z-index: 1; }
/* Klocki wlatujace z boku nie moga poszerzac strony na telefonie.
   clip, nie hidden - nie tworzy kontenera przewijania, sticky i piny dzialaja. */
main { overflow-x: clip; }

.section {
  position: relative;
  padding-block: var(--space-3xl);
  background: transparent;
  color: var(--text);
}
/* Sekcja z wlasnym motywem (jasna wstawka na ciemnej stronie) zaslania tlo */
.section[data-theme] { background: var(--bg); }
.section--tight { padding-block: var(--space-2xl); }
.section--flush { padding-block: 0; }

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-m);
  font-family: var(--font-head);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-muted);
}
.section__label::before {
  content: "";
  width: 1.5rem; height: 2px;
  background: var(--accent);
}

.section__lead {
  max-width: 62ch;
  margin-top: var(--space-m);
  font-size: var(--step-1);
  color: var(--text-soft);
}

.grid { display: grid; gap: var(--space-l); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); }
.grid--5 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 12.5rem), 1fr)); }

/* ==========================================================================
   NAWIGACJA
   Motyw nawigacji czytany z sekcji pod nia (data-nav-theme) - patent z Lando.
   ========================================================================== */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  width: var(--wrap);
  margin-inline: auto;
  padding-block: var(--space-m);
  transition: transform var(--dur-base) var(--ease-out);
}
.nav[data-hidden="true"] { transform: translateY(-120%); }

/* Po odjechaniu od gory nawigacja dostaje wlasne tlo - inaczej tresc
   przejezdza pod nia i robi sie nieczytelna kasza. */
.nav::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 100vw;
  transform: translateX(-50%);
  z-index: -1;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}
.nav[data-scrolled="true"]::before { opacity: 1; border-bottom-color: var(--line); }

/* Jasny motyw: pasek musi odcinac sie od jasnych sekcji wyraznie,
   inaczej przyciski "wisza" na tle bez granicy. */
[data-theme="light"] .nav::before,
.nav[data-theme="light"]::before {
  background: color-mix(in srgb, var(--surface-1) 92%, transparent);
  box-shadow: 0 10px 30px -22px rgba(15, 32, 60, 0.55);
}
[data-theme="light"] .nav[data-scrolled="true"]::before,
.nav[data-theme="light"][data-scrolled="true"]::before { border-bottom-color: var(--line-strong); }

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  text-decoration: none;
}
.nav__brand:hover { color: var(--text); }
.nav__mark { width: 2rem; height: 2rem; flex: none; }
.nav__wordmark {
  font-family: var(--font-mark);
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: -0.01em;
  transform: translateY(0.06em);
}
.nav__wordmark .dot { color: var(--accent); }

.nav__tools { display: flex; align-items: center; gap: var(--space-xs); }

/* Pasek postepu czytania - cienki, bez rozpraszania */
.nav__progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: var(--z-nav);
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--accent);
  pointer-events: none;
}

/* ==========================================================================
   STOPKA
   ========================================================================== */
.footer {
  position: relative;
  padding-block: var(--space-2xl) var(--space-l);
  background: var(--surface-1);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.footer__grid {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
  margin-top: var(--space-2xl);
}
.footer__col h3 {
  margin-bottom: var(--space-s);
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-muted);
}
.footer__col ul { list-style: none; margin: 0; padding: 0; }
.footer__col li { margin-bottom: var(--space-2xs); }
.footer__col a { color: var(--text-soft); text-decoration: none; }
.footer__col a:hover { color: var(--accent); }

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s) var(--space-m);
  justify-content: space-between;
  margin-top: var(--space-2xl);
  padding-top: var(--space-m);
  border-top: 1px solid var(--line);
  font-size: var(--step--1);
  color: var(--text-muted);
}
.footer__legal a { color: var(--text-muted); text-decoration: none; }
.footer__legal a:hover { color: var(--text); }

/* Marquee CTA - dwa pasy w przeciwnych kierunkach */
.marquee {
  position: relative;
  display: flex;
  overflow: hidden;
  user-select: none;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee + .marquee { margin-top: -0.12em; }

.marquee__track {
  display: flex;
  flex: none;
  gap: var(--space-l);
  padding-right: var(--space-l);
  will-change: transform;
}
.marquee__item {
  flex: none;
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 9vw, 7rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: var(--tracking-tight);
  text-transform: uppercase;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-strong);
}
.marquee__item--solid {
  color: var(--text);
  -webkit-text-stroke: 0;
}
.marquee a.marquee__item { text-decoration: none; }
.marquee a.marquee__item:hover { color: var(--accent); -webkit-text-stroke: 0; }

@media (prefers-reduced-motion: reduce) {
  .marquee { -webkit-mask-image: none; mask-image: none; }
  .marquee__track { animation: none !important; transform: none !important; }
}