/* ==========================================================================
   FUTURA — Systemy operacyjne dla firm
   Design system: czarne tło, subtelne fioletowe neony, techniczny minimalizm.
   Fonty: Michroma (marka / eyebrow / nagłówki), Google Sans (treść).
   ========================================================================== */

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
ul { list-style: none; }
button, a { -webkit-tap-highlight-color: transparent; }

/* ---------- DESIGN TOKENS ---------- */
:root {
  /* surfaces */
  --bg:          #050506;
  --bg-soft:     #08080a;
  --bg-panel:    #0c0c10;
  --bg-card:     #101015;
  --bg-card-hov: #131319;

  /* lines */
  --line:        rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.16);

  /* text */
  --text:        #f4f4f6;
  --text-dim:    #a4a4b0;
  --text-faint:  #6c6c78;

  /* brand purple — neon, used sparingly */
  --purple:      #9d63ff;
  --purple-2:    #7c4dff;
  --purple-light:#c9aeff;
  --purple-soft: rgba(157,99,255,.14);
  --purple-line: rgba(157,99,255,.35);
  --purple-glow: rgba(157,99,255,.45);

  /* semantic */
  --danger: #ff6b6b;
  --success: #5eead4;

  /* fonts — Michroma pełni teraz rolę zarówno marki, jak i wszystkich nagłówków */
  --font-brand: 'Michroma', sans-serif;
  --font-display: 'Michroma', sans-serif;
  --font-body: 'Google Sans', sans-serif;

  /* fluid type scale — nieco mniejsze/luźniejsze niż dla Antona, bo Michroma jest szersza */
  --fs-hero:  clamp(2rem, 2.6vw + 1.3rem, 4.6rem);
  --fs-h2:    clamp(1.5rem, 1.8vw + 1rem, 2.7rem);
  --fs-stat:  clamp(1.7rem, 2.2vw + 0.9rem, 3.2rem);
  --fs-lead:  clamp(1.05rem, 0.4vw + 0.95rem, 1.25rem);

  /* layout */
  --container: 1200px;
  --pad: clamp(1.25rem, 4vw, 3rem);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;

  /* motion */
  --ease-out: cubic-bezier(.16,1,.3,1);
  --ease-in-out: cubic-bezier(.65,0,.35,1);
  --dur-fast: .25s;
  --dur-med: .5s;
  --dur-slow: .9s;

  --nav-h: 84px;
}

/* ---------- BASE ---------- */
html, body { background: var(--bg); }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ==========================================================================
   PRELOADER — pełnoekranowy ekran ładowania (logo + poświata), zasłaniający
   stronę dopóki fonty (Michroma/Google Sans) i cała reszta nie są naprawdę
   gotowe. Bez tego, przy display=swap na Google Fonts, widać krótki, brzydki
   "skok" z systemowego fontu zastępczego na docelowy — to temu zapobiega.
   Chowany przez JS (patrz js/main.js), tylko gdy html ma klasę "js", więc
   bez JS strona wyświetla się normalnie (patrz też [data-reveal] niżej —
   ten sam wzorzec progressive enhancement). */
html.js.is-loading body { overflow: hidden; }
#preloader {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  transition: opacity .6s var(--ease-out);
}
.preloader__logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: .04em;
  color: var(--text);
  filter: drop-shadow(0 8px 28px var(--purple-glow));
  opacity: 0;
  transition: opacity .5s var(--ease-out);
}
.preloader__logo.is-ready {
  opacity: 1;
  animation: preloaderPulse 1.6s ease-in-out infinite;
}
@keyframes preloaderPulse { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }
#preloader.is-hidden { opacity: 0; pointer-events: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

section { position: relative; }

::selection { background: var(--purple); color: #0a0a0d; }

/* focus visibility (accessibility) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--purple);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- TYPOGRAPHY HELPERS ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-family: var(--font-brand);
  font-size: clamp(.65rem, .5vw + .55rem, .78rem);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--purple-light);
  margin-bottom: 1.25rem;
}
.eyebrow__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 8px 1px var(--purple-glow);
  flex-shrink: 0;
}

.section-heading {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--fs-h2);
  line-height: 1.35;
  letter-spacing: 0;
  text-transform: uppercase;
  max-width: 20ch;
}

.section-desc {
  margin-top: 1.1rem;
  max-width: 56ch;
  color: var(--text-dim);
  font-size: var(--fs-lead);
  font-weight: 400;
}

.section-head { margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }

/* ---------- BUTTONS ---------- */
/* Custom properties dla animowanej ramki przycisku .btn--primary (patrz niżej) —
   rejestracja przez @property włącza płynną animację/transition kąta, procentu
   i koloru; w przeglądarkach bez wsparcia deklaracja jest po prostu ignorowana. */
@property --gradient-angle { syntax: '<angle>'; initial-value: 0deg; inherits: false; }
@property --gradient-angle-offset { syntax: '<angle>'; initial-value: 0deg; inherits: false; }
@property --gradient-percent { syntax: '<percentage>'; initial-value: 5%; inherits: false; }
@property --gradient-shine { syntax: '<color>'; initial-value: var(--purple-light); inherits: false; }

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  padding: 1rem 1.6rem;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              background var(--dur-fast) var(--ease-out);
}
.btn svg { transition: transform var(--dur-fast) var(--ease-out); }
.btn:hover svg { transform: translateX(3px); }

/* Primary CTA — ciemne tło + animowana, obracająca się fioletowa ramka
   (conic-gradient), tekstura kropek, wewnętrzny "shimmer" i pulsująca poświata
   pod tekstem na hover. Wymaga tekstu owiniętego w <span class="btn__label">. */
.btn--primary {
  --shiny-animation: btn-gradient-angle linear infinite;
  --shiny-duration: 3s;
  --shiny-transition: 800ms cubic-bezier(.25,1,.5,1);
  --shiny-bg: #0c0c10;
  --shiny-bg-ring: #1c1726;
  --shiny-highlight: var(--purple);
  --shiny-highlight-subtle: var(--purple-light);

  isolation: isolate;
  overflow: hidden;
  color: #fff;
  border: 1px solid transparent;
  background: linear-gradient(var(--shiny-bg), var(--shiny-bg)) padding-box,
    conic-gradient(
      from calc(var(--gradient-angle) - var(--gradient-angle-offset)),
      transparent,
      var(--shiny-highlight) var(--gradient-percent),
      var(--gradient-shine) calc(var(--gradient-percent) * 2),
      var(--shiny-highlight) calc(var(--gradient-percent) * 3),
      transparent calc(var(--gradient-percent) * 4)
    ) border-box;
  box-shadow: inset 0 0 0 1px var(--shiny-bg-ring);
  transition: transform var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out),
              --gradient-angle-offset var(--shiny-transition),
              --gradient-percent var(--shiny-transition),
              --gradient-shine var(--shiny-transition);
}

.btn--primary::before,
.btn--primary::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset-inline-start: 50%;
  inset-block-start: 50%;
  translate: -50% -50%;
  z-index: -1;
}

.btn--primary:active { translate: 0 1px; }

/* Tekstura kropek, zamaskowana obracającym się stożkowym gradientem */
.btn--primary::before {
  --dot: 2px;
  width: calc(100% - 6px);
  height: calc(100% - 6px);
  background: radial-gradient(circle at var(--dot) var(--dot), #fff calc(var(--dot) / 4), transparent 0) padding-box;
  background-size: calc(var(--dot) * 2) calc(var(--dot) * 2);
  background-repeat: space;
  mask-image: conic-gradient(from calc(var(--gradient-angle) + 45deg), black, transparent 10% 90%, black);
  border-radius: inherit;
  opacity: .35;
}

/* Wewnętrzny "shimmer" — ukośny fioletowy pas obracający się niezależnie od ramki */
.btn--primary::after {
  --shiny-animation: btn-shimmer linear infinite;
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(-50deg, transparent, var(--shiny-highlight), transparent);
  mask-image: radial-gradient(circle at bottom, transparent 40%, black);
  opacity: .55;
}

.btn--primary .btn__label { position: relative; z-index: 1; }

/* Dwie nałożone animacje (jedna aktywna, druga odwrócona i wstrzymana, uruchamiana
   dopiero na hover) dają charakterystyczne "naciągnięte" przyspieszenie ramki */
.btn--primary,
.btn--primary::before,
.btn--primary::after {
  animation: var(--shiny-animation) var(--shiny-duration),
             var(--shiny-animation) calc(var(--shiny-duration) / .4) reverse paused;
  animation-composition: add;
}

.btn--primary:is(:hover, :focus-visible) {
  --gradient-percent: 20%;
  --gradient-angle-offset: 95deg;
  --gradient-shine: var(--shiny-highlight-subtle);
  transform: translateY(-2px);
}
.btn--primary:is(:hover, :focus-visible),
.btn--primary:is(:hover, :focus-visible)::before,
.btn--primary:is(:hover, :focus-visible)::after {
  animation-play-state: running;
}
.btn--primary:active { transform: translateY(0); }

@keyframes btn-gradient-angle { to { --gradient-angle: 360deg; } }
@keyframes btn-shimmer { to { rotate: 360deg; } }

.btn--ghost {
  background: rgba(255,255,255,.02);
  color: var(--text);
  border: 1px solid var(--line-strong);
  backdrop-filter: blur(6px);
}
.btn--ghost:hover { border-color: var(--purple-line); background: var(--purple-soft); color: var(--purple-light); transform: translateY(-2px); }

.btn--sm { padding: .65rem 1.15rem; font-size: .85rem; }
.btn--block { width: 100%; }

.btn__spinner { display: none; width: 16px; height: 16px; border-radius: 50%; border: 2px solid rgba(255,255,255,.35); border-top-color: #fff; animation: spin .7s linear infinite; }
.btn.is-loading .btn__label { opacity: 0; }
.btn.is-loading .btn__spinner { display: block; position: absolute; }
.btn.is-loading { pointer-events: none; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   COOKIE BAR
   ========================================================================== */
.cookie-bar {
  position: fixed;
  left: 1rem; right: 1rem; bottom: 1rem;
  z-index: 300;
  max-width: 760px;
  margin-inline: auto;
  background: rgba(12,12,16,.92);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  backdrop-filter: blur(16px);
  padding: 1.25rem 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,.7);
  transform: translateY(140%);
  opacity: 0;
  transition: transform .6s var(--ease-out), opacity .6s var(--ease-out);
}
.cookie-bar.is-visible { transform: translateY(0); opacity: 1; }
.cookie-bar__text p { font-size: .85rem; color: var(--text-dim); }
.cookie-bar__text a { color: var(--purple-light); text-decoration: underline; text-underline-offset: 2px; }
.cookie-bar__actions { display: flex; gap: .6rem; margin-left: auto; flex-wrap: wrap; }

/* ==========================================================================
   NAVBAR
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-med) var(--ease-out), border-color var(--dur-med) var(--ease-out), backdrop-filter var(--dur-med) var(--ease-out), height var(--dur-med) var(--ease-out);
}
.navbar.is-scrolled {
  height: 72px;
  background: rgba(5,5,6,.72);
  border-bottom-color: var(--line);
  backdrop-filter: blur(14px);
}
.navbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }

.brand { display: inline-flex; align-items: baseline; gap: .5rem; }
.brand__mark {
  font-family: var(--font-brand);
  font-size: clamp(1rem, .3vw + .95rem, 1.15rem);
  letter-spacing: .06em;
  color: var(--text);
}
.brand__tag {
  font-family: var(--font-brand);
  font-size: .58rem;
  letter-spacing: .28em;
  color: var(--purple-light);
  opacity: .85;
  text-transform: uppercase;
}

.nav-links { display: flex; align-items: center; gap: clamp(1.4rem, 2vw, 2.4rem); }
.nav-links a {
  position: relative;
  font-size: .92rem;
  font-weight: 500;
  color: var(--text-dim);
  padding: .3rem 0;
  transition: color var(--dur-fast) var(--ease-out);
}
.nav-links a span { position: relative; }
.nav-links a::after {
  content: '';
  position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1px;
  background: var(--purple);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-fast) var(--ease-out);
  box-shadow: 0 0 8px var(--purple-glow);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

.navbar__cta { display: flex; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 50%;
  align-items: center; justify-content: center;
  flex-direction: column;
  gap: 4px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,.02);
}
.nav-toggle span { width: 14px; height: 1px; background: var(--text); transition: transform var(--dur-fast) var(--ease-out), opacity var(--dur-fast) var(--ease-out); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* mobile fullscreen menu */
.mobile-menu {
  position: fixed; inset: 0;
  z-index: 190;
  background: rgba(5,5,6,.98);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 2.5rem;
  padding: var(--pad);
  transform: translateY(-100%);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--dur-med) var(--ease-out), opacity var(--dur-med) var(--ease-out);
}
.mobile-menu.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-menu nav { display: flex; flex-direction: column; gap: 1.1rem; }
.mobile-menu nav a {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-dim);
}
.mobile-menu nav a:hover { color: var(--purple-light); }
.mobile-menu .btn { align-self: stretch; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-h);
  overflow: hidden;
}

/* Tło — ten sam animowany WebGL shader co w sekcjach Efekty i Kontakt (patrz
   .shader-canvas i js/shader-background.js), na pełny ekran hero. Vignette
   zostaje na wierzchu, żeby delikatnie wtopić dół sekcji w czerń pod spodem. */
.hero-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }

.hero-vignette {
  position: absolute; inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse 90% 70% at 50% 30%, transparent 40%, var(--bg) 92%);
}

.hero-content { position: relative; z-index: 2; padding-top: clamp(2rem,5vw,4rem); padding-bottom: clamp(2rem,5vw,4rem); }

.hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--fs-hero);
  line-height: 1.28;
  letter-spacing: 0;
  text-transform: uppercase;
  margin-bottom: clamp(2rem, 4vw, 3.25rem);
}
.hero-title .line {
  display: block;
  overflow: hidden;
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
}
/* Ta sama specyficzność (0,3,1) jak reguła ukrywająca poniżej — dlatego reguła
   pokazująca (0,4,1) musi mieć jedną klasę więcej (.is-in), żeby wygrać kaskadę. */
html.js .hero-title .line {
  opacity: 0;
  transform: translateY(110%);
}
/* Fallback: pełny, widoczny fioletowy tekst, gdyby background-clip:text
   z jakiegokolwiek powodu nie zadziałał w danej przeglądarce/silniku. */
.hero-title .line--accent { color: var(--purple-light); }
@supports (background-clip: text) or (-webkit-background-clip: text) {
  .hero-title .line--accent {
    background: linear-gradient(100deg, var(--purple-light), var(--purple) 60%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    filter: drop-shadow(0 0 14px rgba(157,99,255,.28));
  }
}
/* Prosty, przewidywalny mechanizm oparty na transition (ta sama logika co reszta
   strony) zamiast @keyframes — spójniejsze zachowanie w każdej przeglądarce. */
html.js .hero-title.is-in .line { opacity: 1; transform: translateY(0); transition-delay: var(--line-delay, 0s); }
.hero-title.is-in .line:nth-child(1) { --line-delay: .05s; }
.hero-title.is-in .line:nth-child(2) { --line-delay: .18s; }
.hero-title.is-in .line:nth-child(3) { --line-delay: .31s; }

.hero-desc {
  max-width: 56ch;
  font-size: var(--fs-lead);
  color: var(--text-dim);
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }

.hero-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: .7rem;
  font-family: var(--font-brand);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.hero-meta__sep { width: 4px; height: 4px; border-radius: 50%; background: var(--text-faint); }

.scroll-cue {
  position: absolute;
  left: 50%; bottom: clamp(1.2rem, 3vw, 2.4rem);
  transform: translateX(-50%);
  z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: .6rem;
  font-family: var(--font-brand);
  font-size: .6rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.scroll-cue__line { width: 1px; height: 34px; background: linear-gradient(var(--purple), transparent); position: relative; overflow: hidden; }
.scroll-cue__line::after {
  content: ''; position: absolute; left: 0; top: -100%; width: 100%; height: 100%;
  background: linear-gradient(var(--purple-light), transparent);
  animation: cueMove 2.2s ease-in-out infinite;
}
@keyframes cueMove { 0% { top: -100%; } 100% { top: 100%; } }

/* ==========================================================================
   TRUSTED MARQUEE
   ========================================================================== */
.trusted { padding-block: clamp(3rem, 6vw, 4.5rem); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); scroll-margin-top: calc(var(--nav-h) - 24px); }
.trusted__label {
  text-align: center;
  font-family: var(--font-brand);
  font-size: .68rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
}
.marquee {
  position: relative;
  width: 100%;
  overflow: hidden;
}
/* Zamiast mask-image (potrafi się nie przemalowywać poprawnie razem z
   animowanym transformem dziecka w niektórych przeglądarkach/GPU, co
   objawia się znikającą zawartością) — proste nakładki-gradienty na
   brzegach, dający identyczny wizualnie efekt rozmycia krawędzi. */
.marquee::before,
.marquee::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: clamp(40px, 10vw, 140px);
  z-index: 2;
  pointer-events: none;
}
.marquee::before { left: 0; background: linear-gradient(90deg, var(--bg), transparent); }
.marquee::after { right: 0; background: linear-gradient(270deg, var(--bg), transparent); }
.marquee__track {
  display: flex;
  align-items: center;
  width: max-content;
  gap: clamp(2rem, 4vw, 3.5rem);
  animation: marqueeScroll 32s linear infinite;
  will-change: transform;
  transform: translateZ(0);
  backface-visibility: hidden;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item {
  font-family: var(--font-brand);
  font-size: clamp(1rem, 1.4vw, 1.4rem);
  letter-spacing: .08em;
  color: var(--text-faint);
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease-out), text-shadow var(--dur-fast) var(--ease-out);
}
.marquee__item:hover { color: var(--purple-light); text-shadow: 0 0 18px var(--purple-glow); }
/* Logotypy klientów: białe sylwetki (wygenerowane raz, na przezroczystym
   tle), przyciemnione przez opacity do tego samego szarego co linie
   oddzielające sekcje (--line-strong), lekko rozjaśniane na hover. */
.marquee__item--logo { display: inline-flex; align-items: center; }
.marquee__item--logo img {
  display: block;
  height: clamp(20px, 2.2vw, 28px);
  width: auto;
  opacity: .16;
  transition: opacity var(--dur-fast) var(--ease-out);
}
.marquee__item--logo:hover img { opacity: .4; }
.marquee__dot { width: 4px; height: 4px; border-radius: 50%; background: var(--line-strong); flex-shrink: 0; }
@keyframes marqueeScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ==========================================================================
   STAT SECTION (20%)
   ========================================================================== */
.stat-section { position: relative; overflow: hidden; padding-block: clamp(5rem, 10vw, 9rem); border-bottom: 1px solid var(--line); }
.stat-section .container { position: relative; z-index: 1; }

.stat-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.stat-mesh {
  position: absolute; inset: -1px;
  background-image:
    linear-gradient(rgba(157,99,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(157,99,255,.045) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 80%);
}
.stat-sweep {
  position: absolute;
  width: 520px; height: 520px;
  top: -140px; left: -160px;
  border-radius: 50%;
  filter: blur(110px);
  background: radial-gradient(circle, rgba(145,107,191,.22), transparent 70%);
  animation: statSweep 28s ease-in-out infinite;
  will-change: transform;
}
@keyframes statSweep {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(58vw, 22vh); }
}

.stat-heading {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--fs-h2);
  line-height: 1.4;
  text-transform: uppercase;
  max-width: 24ch;
}
.stat-number {
  display: inline-flex;
  align-items: baseline;
  font-size: var(--fs-stat);
  color: var(--purple-light);
  filter: drop-shadow(0 0 30px rgba(157,99,255,.45));
  margin-right: .18em;
}
.stat-sub { margin-top: 1.75rem; max-width: 60ch; font-size: var(--fs-lead); color: var(--text-dim); }

/* ==========================================================================
   PROBLEMS GRID — asymetryczne szklane karty: "przygaszone" przy wejściu na
   ekran, "zapalają się" (pełny fiolet + poświata) gdy wjadą w viewport
   (main.js, IntersectionObserver na [data-card-light]), a na hover delikatnie
   przechylają się w 3D w stronę kursora i pokazują fioletową, "holograficzną"
   folię/blask przesuwające się wraz z ruchem kursora (main.js, port
   komponentu GlareCard — --m-x/--m-y/--r-x/--r-y/--bg-x/--bg-y), plus rośnie
   numer-widmo w rogu (bez zmian).
   ========================================================================== */
.problems { position: relative; overflow: hidden; padding-block: clamp(4rem, 8vw, 7rem); scroll-margin-top: calc(var(--nav-h) - 24px); }
/* Tło — ten sam shader "Silk" violet swirl co w Hero/Efekty/Kontakt (patrz
   .shader-canvas i js/shader-background.js), na pełny ekran tej sekcji.
   Vignette (ta sama elipsa co .hero-vignette, powielona i odbita w pionie)
   wtapia fiolet w czerń zarówno przy górnej, jak i dolnej granicy sekcji,
   zamiast twardego cięcia na overflow:hidden. */
.problems-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.problems-vignette {
  position: absolute; inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 90% 70% at 50% 30%, transparent 62%, var(--bg) 92%),
    radial-gradient(ellipse 90% 70% at 50% 70%, transparent 62%, var(--bg) 92%);
}
.problems .container { position: relative; z-index: 1; }

/* Karta 01 (najdłuższy opis) wyróżniona 2×2, reszta wypełnia grid 2×2 obok. */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(190px, auto);
  gap: 1.25rem;
}

.problem-card {
  position: relative;
  grid-column: span 1;
  opacity: .5;
  filter: saturate(.2) brightness(.75);
  transition: opacity .8s var(--ease-out), filter .8s var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
  /* Perspektywa dla dziecka (.problem-card__tilt) — musi siedzieć na
     RODZICU, nie na samym przechylanym elemencie, żeby dać efekt głębi 3D.
     Poza tym ten element jest już tylko "ramą" strukturalną — cała widoczna
     powłoka karty (tło/ramka/cień) siedzi na .problem-card__tilt, żeby
     obracała się RAZEM z treścią, a nie zostawała w miejscu pod spodem. */
  perspective: 700px;
  --m-x: 50%; --m-y: 50%;
  --bg-x: 50%; --bg-y: 50%;
  --r-x: 0deg; --r-y: 0deg;
  --tilt-duration: 300ms;
  --glare-opacity: 0;
}
/* .is-lit steruje tylko jasnością/nasyceniem całości (opacity/filter
   obejmują wizualnie wszystkich potomków) — border/box-shadow, jako część
   powłoki, przełączają się na .problem-card__tilt (patrz niżej). */
.problem-card.is-lit { opacity: 1; filter: saturate(1) brightness(1); }
.problem-card.is-lit .problem-card__tilt {
  border-color: var(--line-strong);
}
/* Tylko na urządzeniach z realnym hoverem (mysz) — na dotyku :hover
   potrafi "zawiesić się" po tapnięciu (brak odpowiednika pointerleave przy
   puszczeniu palca), patrz też guard w main.js dla tiltu/glare. */
@media (hover: hover) and (pointer: fine) {
  .problem-card:hover { transform: translateY(-4px); --glare-opacity: .35; }
  .problem-card:hover .problem-card__tilt { border-color: var(--line-strong); }
}
.problem-card--featured { grid-column: span 2; grid-row: span 2; }

/* Element faktycznie przechylany w 3D (rotateY/rotateX sterowane z JS na
   podstawie pozycji kursora) — trzyma teraz CAŁĄ widoczną powłokę karty
   (szkło/ramka/cień/padding), żeby przy hoverze obracała się razem z treścią
   jako jedna bryła, a nie tylko sam tekst/ikona w środku. */
.problem-card__tilt {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 2.5vw, 2.1rem);
  background: rgba(8,8,10,.7);
  border: 1px solid var(--line);
  box-shadow: none;
  transform: rotateY(var(--r-x)) rotateX(var(--r-y));
  transition: transform var(--tilt-duration) ease,
              border-color .8s var(--ease-out), box-shadow .8s var(--ease-out);
  will-change: transform;
}
.problem-card--featured .problem-card__tilt {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: clamp(1.75rem, 3vw, 2.5rem);
}

/* Numer-widmo w tle karty: duży, blady, zakotwiczony w prawym górnym rogu.
   Na hover "rośnie w stronę środka" karty dzięki transform-origin w rogu. */
.problem-card__ghost {
  position: absolute;
  top: -0.08em;
  right: 0.05em;
  font-family: var(--font-brand);
  font-size: clamp(3.5rem, 6vw, 5.5rem);
  line-height: 1;
  color: var(--purple-light);
  opacity: .05;
  transform-origin: top right;
  transform: scale(.75);
  transition: transform .6s var(--ease-out), opacity .6s var(--ease-out);
  z-index: 0;
  pointer-events: none;
  user-select: none;
}
.problem-card--featured .problem-card__ghost { font-size: clamp(5rem, 9vw, 9rem); }
.problem-card:hover .problem-card__ghost { transform: scale(1.05); opacity: .12; }

/* Miękki biały "shine" podążający za kursorem — symuluje odbicie światła na
   szkle (warstwa 1 z 2 efektu glare, port GlareCard). */
.problem-card__shine {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: var(--glare-opacity);
  transition: opacity .3s var(--ease-out);
  mix-blend-mode: soft-light;
  background: radial-gradient(farthest-corner circle at var(--m-x) var(--m-y), rgba(255,255,255,.35) 10%, rgba(255,255,255,.2) 20%, rgba(255,255,255,0) 90%);
}
/* Czarno-srebrna, "metaliczna" folia (warstwa 2 z 2) — przesuwający się wraz
   z kursorem, migoczący gradient (bez odrębnego rysowanego kształtu — tylko
   pasy i wzór ukośny, w tonacji chrom/srebro zamiast fioletu). */
.problem-card__foil {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: var(--glare-opacity);
  transition: opacity .3s var(--ease-out);
  mix-blend-mode: color-dodge;
  --foil-step: 5%;
  background:
    repeating-linear-gradient(0deg,
      #0a0a0c calc(var(--foil-step) * 1),
      #c8c8cd calc(var(--foil-step) * 2),
      #3a3a40 calc(var(--foil-step) * 3),
      #8e8e95 calc(var(--foil-step) * 4),
      #1c1c20 calc(var(--foil-step) * 5),
      #e6e6ea calc(var(--foil-step) * 6),
      #0a0a0c calc(var(--foil-step) * 7)
    ) 0% var(--bg-y) / 200% 700% no-repeat,
    repeating-linear-gradient(128deg,
      #0a0a0c 0%, #9a9aa2 3.8%, #9a9aa2 4.5%,
      #9a9aa2 5.2%, #0a0a0c 10%, #0a0a0c 12%
    ) var(--bg-x) var(--bg-y) / 300% no-repeat,
    radial-gradient(farthest-corner circle at var(--m-x) var(--m-y),
      rgba(224,224,230,.16) 12%, rgba(224,224,230,.24) 20%, rgba(224,224,230,.4) 120%
    ) var(--bg-x) var(--bg-y) / 300% no-repeat;
  background-blend-mode: hue, overlay;
}

.problem-card__index {
  position: relative;
  z-index: 1;
  display: block;
  font-family: var(--font-brand);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--text-faint);
  margin-bottom: 1.4rem;
}
.problem-card__icon {
  position: relative;
  z-index: 1;
  display: inline-flex;
  width: 42px; height: 42px;
  align-items: center; justify-content: center;
  border-radius: 10px;
  background: var(--purple-soft);
  color: var(--purple-light);
  margin-bottom: 1.25rem;
}
.problem-card__icon svg { width: 20px; height: 20px; }
.problem-card h3 { position: relative; z-index: 1; font-family: var(--font-body); font-weight: 700; font-size: 1.08rem; margin-bottom: .6rem; letter-spacing: .01em; }
.problem-card p { position: relative; z-index: 1; color: var(--text-dim); font-size: .95rem; }
.problem-card--featured .problem-card__icon { width: 48px; height: 48px; }
.problem-card--featured .problem-card__icon svg { width: 22px; height: 22px; }
.problem-card--featured h3 { font-size: 1.3rem; }

@media (max-width: 860px) {
  .problems-grid { grid-template-columns: 1fr; }
  .problem-card, .problem-card--featured { grid-column: span 1; grid-row: span 1; }
}

/* ==========================================================================
   PROCESS TIMELINE
   ========================================================================== */
.process {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4rem, 8vw, 7rem);
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.process .container { position: relative; z-index: 1; }

/* Fioletowy fade w prawym górnym rogu — jego opacity/skala rosną wraz z przewijaniem
   przez punkty procesu (sterowane z JS, patrz updateTimeline() w main.js). */
.process-fade {
  position: absolute;
  top: 0; right: 0;
  width: 100%; height: 100%;
  background: radial-gradient(circle at top right, rgba(145,107,191,.18), transparent 70%);
  opacity: 0;
  transform: scale(.35);
  transform-origin: top right;
  transition: opacity .2s linear, transform .2s linear;
  pointer-events: none;
  z-index: 0;
}

.timeline { position: relative; max-width: 780px; }
.timeline__line {
  position: absolute;
  left: 27px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--line-strong);
}
.timeline__line-fill {
  position: absolute; top: 0; left: 0; width: 100%; height: 0%;
  background: linear-gradient(var(--purple), var(--purple-2));
  box-shadow: 0 0 12px var(--purple-glow);
  transition: height .25s linear;
}

.timeline__item {
  position: relative;
  display: flex;
  gap: 1.75rem;
  padding-bottom: clamp(2.25rem, 5vw, 3.25rem);
}
.timeline__item:last-child { padding-bottom: 0; }

.timeline__marker {
  flex-shrink: 0;
  width: 56px; height: 56px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: var(--bg-panel);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-brand);
  font-size: .82rem;
  color: var(--text-dim);
  z-index: 1;
  transition: border-color var(--dur-med) var(--ease-out), color var(--dur-med) var(--ease-out), box-shadow var(--dur-med) var(--ease-out);
}
.timeline__item.is-active .timeline__marker {
  border-color: var(--purple);
  color: var(--purple-light);
  box-shadow: 0 0 0 4px var(--purple-soft), 0 0 24px -4px var(--purple-glow);
}

.timeline__content { padding-top: .55rem; }
.timeline__content h3 { font-family: var(--font-body); font-weight: 700; font-size: 1.2rem; margin-bottom: .5rem; }
.timeline__content p { color: var(--text-dim); max-width: 52ch; }

/* ==========================================================================
   EFEKTY — naprzemienne, pełnoszerokościowe wiersze (celowo inny wzorzec niż
   karty ".problem-card" i linia postępu ".timeline")
   ========================================================================== */
.effects {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--line);
}
.effects .container { position: relative; z-index: 1; }

/* Tło — animowany WebGL shader ("Silk" violet swirl, 21st.dev), renderowany na
   #effectsShader w js/shader-background.js (ten sam shader zasila też tło
   sekcji Kontakt, patrz .contact-bg niżej). Opacity obniżone w .shader-canvas,
   żeby efekt zostawał wyraźnie w tle i nie odciągał uwagi od tekstu czterech
   punktów. Vignette (ta sama elipsa co .hero-vignette/.problems-vignette,
   powielona i odbita w pionie) wtapia fiolet w czerń zarówno przy górnej,
   jak i dolnej granicy sekcji, zamiast twardego cięcia na overflow:hidden. */
.effects-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.effects-vignette {
  position: absolute; inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 90% 70% at 50% 30%, transparent 62%, var(--bg) 92%),
    radial-gradient(ellipse 90% 70% at 50% 70%, transparent 62%, var(--bg) 92%);
}
.shader-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  opacity: .56;
}

.effects-list {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 7vw, 5rem);
}

.effect-row {
  display: flex;
  align-items: center;
  gap: clamp(2rem, 5vw, 4rem);
}
.effect-row--reverse { flex-direction: row-reverse; }

.effect-row__text { flex: 1; min-width: 0; }
.effect-row__index {
  display: block;
  font-family: var(--font-brand);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--purple-light);
  margin-bottom: 1rem;
}
.effect-row__text h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.3rem, 1.4vw + 1rem, 1.9rem);
  letter-spacing: .01em;
  margin-bottom: .85rem;
  max-width: 20ch;
}
.effect-row__text p { color: var(--text-dim); font-size: var(--fs-lead); max-width: 46ch; }

.effect-row__visual {
  position: relative;
  flex: 1;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.effect-row__ghost {
  font-family: var(--font-brand);
  font-size: clamp(6rem, 12vw, 11rem);
  line-height: 1;
  color: var(--purple-light);
  opacity: .06;
  user-select: none;
  animation: effectPulse 7s ease-in-out infinite alternate;
}
@keyframes effectPulse {
  from { opacity: .04; transform: scale(1); }
  to   { opacity: .09; transform: scale(1.04); }
}
.effect-row__icon {
  position: absolute;
  width: 60px; height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--purple-soft);
  color: var(--purple-light);
  box-shadow: 0 0 40px -6px rgba(157,99,255,.45);
}
.effect-row__icon svg { width: 26px; height: 26px; }

@media (max-width: 860px) {
  .effect-row, .effect-row--reverse {
    flex-direction: column-reverse;
    text-align: center;
  }
  .effect-row__text h3, .effect-row__text p { max-width: none; margin-inline: auto; }
  .effect-row__visual { min-height: 160px; }
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { padding-block: clamp(4rem, 8vw, 7rem); }
/* 1100px dopasowane tak, by prawa krawędź listy kończyła się w tym samym miejscu,
   co tekst w prawej kolumnie wiersza 04 sekcji Efekty (zmierzone na 1440px). */
.faq-list { max-width: 1100px; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  text-align: left;
  padding: 1.15rem 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(1rem, 1vw + .7rem, 1.15rem);
  color: var(--text);
}
.faq-item__question:hover { color: var(--purple-light); }
.faq-item__icon {
  position: relative;
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.faq-item__icon::before, .faq-item__icon::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  background: var(--text-dim);
  transition: transform var(--dur-med) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.faq-item__icon::before { width: 10px; height: 1.4px; transform: translate(-50%,-50%); }
.faq-item__icon::after  { width: 1.4px; height: 10px; transform: translate(-50%,-50%); }
.faq-item.is-open .faq-item__icon::after { transform: translate(-50%,-50%) rotate(90deg); opacity: 0; }
.faq-item.is-open .faq-item__icon { border-color: var(--purple); background: var(--purple-soft); }
.faq-item.is-open .faq-item__icon::before { background: var(--purple-light); }
.faq-item.is-open .faq-item__question { color: var(--purple-light); }

.faq-item__answer {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows .45s var(--ease-out), opacity .35s var(--ease-out);
}
.faq-item.is-open .faq-item__answer { grid-template-rows: 1fr; opacity: 1; }
.faq-item__answer > p { overflow: hidden; color: var(--text-dim); max-width: 68ch; padding-bottom: 1.1rem; }
.faq-item__answer { overflow: hidden; }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4.5rem, 9vw, 8rem);
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
}
/* Tło — ten sam animowany shader co w sekcji Efekty (patrz .effects-bg /
   .shader-canvas wyżej i js/shader-background.js), dopasowany do rozmiaru tej
   sekcji automatycznie (canvas mierzy się sam co klatkę). Formularz i karta
   kontaktu bezpośredniego mają własne, nieprzezroczyste tła (.contact-form,
   .contact__direct), więc shader przebija tylko zza lewej kolumny z tekstem. */
.contact-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.contact__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: start;
}

.contact__points { margin-top: 2rem; display: flex; flex-direction: column; gap: .85rem; }
.contact__points li { display: flex; align-items: center; gap: .7rem; color: var(--text-dim); font-size: .95rem; }
.contact__points svg { flex-shrink: 0; width: 18px; height: 18px; color: var(--purple-light); background: var(--purple-soft); border-radius: 50%; padding: 3px; box-sizing: content-box; }

.contact__direct {
  margin-top: 2.5rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  display: flex; flex-direction: column; gap: .3rem;
}
.contact__direct span { font-size: .8rem; color: var(--text-faint); }
.contact__direct a { font-family: var(--font-brand); font-size: .95rem; color: var(--purple-light); word-break: break-all; }
.contact__direct a:hover { text-decoration: underline; }

.contact-form {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}
/* Honeypot antyspamowy (Web3Forms) — pole ma być wypełniane wyłącznie przez
   boty, więc chowamy je poza ekranem stylem (nie display:none/hidden, na
   które część botów jest już odporna), zamiast usuwać je z przepływu. */
.form-honeypot { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form-field { margin-bottom: 1.1rem; display: flex; flex-direction: column; gap: .5rem; }
.form-field label { font-size: .85rem; font-weight: 600; color: var(--text-dim); }
.form-field label span { color: var(--purple-light); }
.form-field input, .form-field textarea {
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  color: var(--text);
  resize: vertical;
  transition: border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.form-field input::placeholder, .form-field textarea::placeholder { color: var(--text-faint); }
.form-field input:focus, .form-field textarea:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px var(--purple-soft);
}
.form-field__error { display: none; font-size: .78rem; color: var(--danger); }
.form-field.is-invalid input, .form-field.is-invalid textarea { border-color: var(--danger); }
.form-field.is-invalid .form-field__error { display: block; }

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  cursor: pointer;
  margin-bottom: .4rem;
}
.form-checkbox input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.form-checkbox__box {
  flex-shrink: 0;
  width: 20px; height: 20px;
  margin-top: 2px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--bg-card);
  position: relative;
  transition: border-color var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out);
}
.form-checkbox__box::after {
  content: '';
  position: absolute; left: 6px; top: 2px;
  width: 5px; height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform var(--dur-fast) var(--ease-out);
}
.form-checkbox input:checked + .form-checkbox__box { background: var(--purple); border-color: var(--purple); }
.form-checkbox input:checked + .form-checkbox__box::after { transform: rotate(45deg) scale(1); }
.form-checkbox input:focus-visible + .form-checkbox__box { outline: 2px solid var(--purple); outline-offset: 2px; }
.form-checkbox__text { font-size: .82rem; color: var(--text-faint); line-height: 1.55; }
.form-checkbox__text a { color: var(--purple-light); text-decoration: underline; text-underline-offset: 2px; }
.form-field__error--checkbox { display: none; margin: -.3rem 0 1rem 2.7rem; font-size: .78rem; color: var(--danger); }
.contact-form.show-consent-error .form-field__error--checkbox { display: block; }

.contact-form .btn--block { margin-top: .5rem; }
.form-status { margin-top: 1rem; text-align: center; font-size: .88rem; min-height: 1.2em; }
.form-status.is-success { color: var(--success); }
.form-status.is-error { color: var(--danger); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer { border-top: 1px solid var(--line); padding-top: clamp(3rem, 6vw, 5rem); }
.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  padding-bottom: clamp(2.5rem, 5vw, 3.5rem);
}
.footer__brand p { margin: 1.1rem 0 1.4rem; color: var(--text-dim); font-size: .92rem; max-width: 34ch; }
.footer__social-row { display: flex; align-items: center; gap: .6rem; }
.footer__social {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--line-strong); color: var(--text-dim);
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.footer__social:hover { color: var(--purple-light); border-color: var(--purple-line); box-shadow: 0 0 16px -2px var(--purple-glow); }

.footer__col { display: flex; flex-direction: column; gap: .85rem; }
.footer__col h4 { font-family: var(--font-brand); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-faint); margin-bottom: .3rem; }
.footer__col a, .footer__col button { color: var(--text-dim); font-size: .92rem; text-align: left; width: fit-content; transition: color var(--dur-fast) var(--ease-out); }
.footer__col a:hover, .footer__col button:hover { color: var(--purple-light); }
.footer__placeholder { font-size: .8rem; color: var(--text-faint); font-style: italic; }

.footer__bottom {
  border-top: 1px solid var(--line);
  padding-block: 1.5rem;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: .75rem 1.5rem;
  font-size: .78rem; color: var(--text-faint);
}

/* ==========================================================================
   BLOG (blog.html) — szablon siatki kart + stan pusty
   ========================================================================== */
.blog { padding-block: clamp(2rem, 4vw, 3rem) clamp(5rem, 10vw, 8rem); }

/* Szablon karty artykułu — gotowy do użycia, patrz komentarz w blog.html.
   Dziś w DOM nie ma żadnej .blog-card (widoczny jest tylko .blog-empty poniżej),
   ale style zostają zdefiniowane, żeby pierwszy prawdziwy post wyglądał poprawnie
   od razu po wklejeniu markupu z szablonu. */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}
.blog-card:hover {
  border-color: var(--purple-line);
  transform: translateY(-4px);
  box-shadow: 0 20px 50px -24px rgba(157,99,255,.35);
}
.blog-card__thumb {
  display: block;
  aspect-ratio: 16 / 10;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-panel), var(--bg-card));
}
.blog-card__thumb::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(157,99,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(157,99,255,.06) 1px, transparent 1px);
  background-size: 24px 24px;
}
.blog-card__body { padding: 1.5rem; }
.blog-card__meta {
  display: flex; align-items: center; gap: .6rem;
  margin-bottom: .75rem;
  font-family: var(--font-brand);
  font-size: .62rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.blog-card__tag { color: var(--purple-light); }
.blog-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: .6rem; }
.blog-card h3 a { color: var(--text); }
.blog-card h3 a:hover { color: var(--purple-light); }
.blog-card p { color: var(--text-dim); font-size: .92rem; margin-bottom: 1rem; }
.blog-card__link { display: inline-flex; align-items: center; gap: .4rem; font-weight: 600; font-size: .88rem; color: var(--purple-light); }
.blog-card__link svg { transition: transform var(--dur-fast) var(--ease-out); }
.blog-card__link:hover svg { transform: translateX(3px); }

/* Stan pusty — aktualnie realnie widoczny na blog.html (brak wpisów jeszcze) */
.blog-empty {
  max-width: 560px;
  margin-inline: auto;
  text-align: center;
  padding-block: clamp(2.5rem, 5vw, 4rem);
}
.blog-empty__icon {
  display: inline-flex;
  width: 64px; height: 64px;
  align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--purple-soft);
  color: var(--purple-light);
  margin-bottom: 1.75rem;
}
.blog-empty__icon svg { width: 28px; height: 28px; }
.blog-empty h2 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(1.4rem, 1.6vw + 1rem, 2rem);
  margin-bottom: 1rem;
}
.blog-empty p { color: var(--text-dim); margin-bottom: 2rem; }

@media (max-width: 900px) { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .blog-grid { grid-template-columns: 1fr; } }

/* ==========================================================================
   SCROLL REVEAL (generic, IntersectionObserver-driven)
   ========================================================================== */
/* Treść jest domyślnie w pełni widoczna (bez JS / przy błędzie skryptu = brak utraty
   treści). Dopiero gdy JS potwierdzi gotowość (klasa "js" na <html>, patrz <head>),
   elementy startują jako ukryte i czekają na obserwator przecięcia (IntersectionObserver). */
[data-reveal] {
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
/* :not(.is-visible) trzyma tę regułę "poniżej" .is-visible w specyficzności CSS —
   bez tego "html.js [data-reveal]" (0,2,1) przebijało "[data-reveal].is-visible" (0,2,0)
   i treść zostawała niewidoczna, mimo że JS poprawnie dodawał klasę is-visible. */
html.js [data-reveal]:not(.is-visible) {
  opacity: 0;
  transform: translateY(22px);
}
/* Warianty kierunkowe (używane w sekcji Efekty) — muszą być zdefiniowane PO regule
   ogólnej powyżej: mają tę samą specyficzność (0,3,1), więc o tym, która wygra,
   decyduje kolejność w pliku, nie samo dopasowanie selektora. */
html.js [data-reveal="left"]:not(.is-visible)  { transform: translateX(-32px); }
html.js [data-reveal="right"]:not(.is-visible) { transform: translateX(32px); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* staggered children inside reveal groups */
.timeline__item[data-reveal],
.faq-item[data-reveal] { transition-delay: calc(var(--stagger, 0) * 70ms); }

/* ==========================================================================
   STRONA PRAWNA (Polityka Prywatności)
   ========================================================================== */
.legal-hero {
  padding-top: calc(var(--nav-h) + clamp(2.5rem, 6vw, 5rem));
  padding-bottom: clamp(2.5rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line);
}
.legal-hero__title { max-width: none; font-size: clamp(2.4rem, 3vw + 1.4rem, 4.2rem); }

.legal { padding-block: clamp(3rem, 6vw, 5rem); }
.legal__inner {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: calc(var(--nav-h) + 1.5rem);
  display: flex;
  flex-direction: column;
  gap: .75rem;
  border-left: 1px solid var(--line);
  padding-left: 1.25rem;
}
.legal-toc__label {
  font-family: var(--font-brand);
  font-size: .62rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: .25rem;
}
.legal-toc a { font-size: .85rem; color: var(--text-dim); transition: color var(--dur-fast) var(--ease-out); }
.legal-toc a:hover { color: var(--purple-light); }

.legal-content { max-width: 72ch; }
.legal-content h2 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: .01em;
  margin-top: 2.75rem;
  margin-bottom: 1rem;
  scroll-margin-top: calc(var(--nav-h) + 1.5rem);
}
.legal-content h2:first-of-type { margin-top: 0; }
.legal-content p { color: var(--text-dim); margin-bottom: 1rem; }
.legal-content ul { margin-bottom: 1rem; display: flex; flex-direction: column; gap: .55rem; }
.legal-content ul li {
  position: relative;
  padding-left: 1.3rem;
  color: var(--text-dim);
}
.legal-content ul li::before {
  content: '';
  position: absolute; left: 0; top: .55em;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--purple);
  box-shadow: 0 0 6px var(--purple-glow);
}
.legal-content strong { color: var(--text); }
.legal-content a { color: var(--purple-light); text-decoration: underline; text-underline-offset: 2px; }
.legal-highlight {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 2px solid var(--purple);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  font-size: .92rem;
}
.legal-back { margin-top: 3rem; }

@media (max-width: 900px) {
  .legal__inner { grid-template-columns: 1fr; }
  .legal-toc {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    border-left: none;
    border-top: 1px solid var(--line);
    padding-left: 0;
    padding-top: 1.25rem;
    gap: .5rem 1.25rem;
  }
  .legal-toc__label { width: 100%; }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .nav-links, .navbar__cta { display: none; }
  .nav-toggle { display: flex; }

  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }

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

@media (max-width: 640px) {
  :root { --nav-h: 72px; }
  .form-row { grid-template-columns: 1fr; }
  .cookie-bar { flex-direction: column; align-items: stretch; }
  .cookie-bar__actions { margin-left: 0; }
  .footer__top { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  /* "Przewiń" jest position:absolute z sztywnym offsetem od dołu hero —
     gdy .hero-meta zawinie się na 2 linie, koliduje z nim. Na mobile
     wypuszczamy scroll-cue z absolute do zwykłego przepływu, więc fizycznie
     nie może nachodzić na nic nad sobą, niezależnie od wysokości treści. */
  .hero-meta { font-size: .6rem; gap: .5rem; }
  .scroll-cue { position: static; transform: none; margin-top: clamp(1.5rem, 6vw, 2.5rem); }
  /* Fade w prawym górnym rogu sekcji "Jak stworzyć system..." — bez
     jawnego promienia gradient dopasowuje się do proporcji .process, który
     na mobile jest wysoki i wąski (kwadratowy/kanciasty efekt zamiast
     koła). Jawny promień w vw czyni go zawsze prawdziwym kołem. */
  .process-fade { background: radial-gradient(circle 70vw at top right, rgba(145,107,191,.18), transparent 70%); }
}