/* AIoTek — landing page
   Paleta wyprowadzona z logo: #185FA5 (niebieski), #0F6E56 (zielony), #111111 (czerń) */

:root {
  --blue: #185FA5;
  --blue-600: #14508b;
  --blue-300: #4f90d6;
  --green: #0F6E56;
  --green-400: #35c79b;
  --ink: #111111;
  --dark: #0B1420;
  --dark-2: #101d2e;

  --text: #1b2430;
  --muted: #5c6b7d;
  --line: #e3e8ee;
  --bg: #ffffff;
  --bg-alt: #f5f8fb;

  --radius: 14px;
  --container: 1180px;
  --ease: cubic-bezier(.22, 1, .36, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; }

:focus-visible {
  outline: 3px solid var(--blue-300);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--blue);
  color: #fff;
  padding: .75rem 1.25rem;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

/* ---------- typografia ---------- */
h1, h2, h3 {
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
  font-weight: 700;
}
h1 { font-size: clamp(2.1rem, 5.2vw, 3.9rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.18rem; font-weight: 700; }

.kicker {
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: .9rem;
}
.kicker-light { color: var(--blue-300); }

.lead {
  font-size: clamp(1.02rem, 1.6vw, 1.18rem);
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 1.1rem 0;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), padding .35s var(--ease);
}
.site-header.scrolled {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line), 0 8px 30px rgba(11, 20, 32, .07);
  padding: .6rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand img { width: 219px; height: auto; }

/* logo jest ciemne — na przezroczystym (ciemnym) hero rozjaśniamy je filtrem */
.site-header:not(.scrolled) .brand img { filter: brightness(0) invert(1); }

.nav ul {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: .95rem;
  font-weight: 500;
}
.nav a {
  color: rgba(255, 255, 255, .82);
  transition: color .2s;
  position: relative;
}
.nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--green);
  transition: width .28s var(--ease);
}
.nav a:not(.nav-cta):hover::after { width: 100%; }
.nav a:hover { color: #fff; }

.site-header.scrolled .nav a { color: var(--text); }
.site-header.scrolled .nav a:hover { color: var(--blue); }

.nav-cta {
  background: var(--green);
  color: #fff !important;
  padding: .55rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  transition: background .25s, transform .25s var(--ease);
}
.nav-cta:hover { background: #0c5744; transform: translateY(-1px); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: .5rem;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s;
}
.site-header.scrolled .nav-toggle span { background: var(--ink); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .95rem 1.9rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .97rem;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  will-change: transform;
}
.btn-primary {
  background: var(--green);
  color: #fff;
  box-shadow: 0 10px 24px -10px rgba(15, 110, 86, .75);
}
.btn-primary:hover {
  background: #0c5744;
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -12px rgba(15, 110, 86, .85);
}
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, .28);
  color: #fff;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .5);
  transform: translateY(-2px);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 9rem 0 5rem;
  background: var(--dark);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 78% 18%, rgba(24, 95, 165, .55), transparent 62%),
    radial-gradient(ellipse 55% 55% at 12% 88%, rgba(15, 110, 86, .38), transparent 60%),
    linear-gradient(160deg, #0B1420 0%, #101d2e 55%, #0d1a2b 100%);
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 78%);
}

.hero-inner { position: relative; z-index: 1; max-width: 860px; }

.eyebrow {
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .38em;
  text-transform: uppercase;
  color: var(--blue-300);
  margin-bottom: 1.6rem;
}
.hero h1 { color: #fff; margin-bottom: 1.6rem; }
.grad {
  background: linear-gradient(100deg, var(--blue-300), #35c79b);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lead { color: rgba(255, 255, 255, .72); }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2.6rem 0 3.4rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}
.hero-tags li {
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .68);
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(255, 255, 255, .04);
  padding: .4rem 1rem;
  border-radius: 999px;
}

/* ---------- hero: reakcja na ruch myszy (parallax głębi + latarka) ----------
   JS zapisuje na .hero tylko 4 zmienne: --px/--py (znormalizowany kursor -1..1,
   steruje parallaxem) oraz --tx/--ty (przesunięcie latarki w px). Wszystkie
   transformy liczy CSS na kompozytorze (translate3d), zero repaintów. */
.hero { --px: 0; --py: 0; --tx: 0; --ty: 0; }

/* tło receduje przeciwnie do kursora; scale(1.06) łata krawędź przy przesunięciu */
.hero-bg {
  transform: translate3d(calc(var(--px) * -6px), calc(var(--py) * -4px), 0) scale(1.06);
  will-change: transform;
}
/* siatka jedzie mocniej niż poświata → rozwarstwienie planów, wrażenie głębi */
.hero-bg::after {
  transform: translate3d(calc(var(--px) * -8px), calc(var(--py) * -5px), 0);
}

/* latarka: miękkie światło w kolorach marki podążające za kursorem,
   rozświetla siatkę (mix-blend: screen tylko rozjaśnia, nigdy nie przyciemnia) */
.hero-torch {
  --spot: clamp(420px, 46vw, 720px);
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--spot);
  height: var(--spot);
  margin: calc(var(--spot) / -2) 0 0 calc(var(--spot) / -2);
  border-radius: 50%;
  background: radial-gradient(circle closest-side,
    rgba(79, 144, 214, .22),
    rgba(53, 199, 155, .10) 45%,
    transparent 70%);
  mix-blend-mode: screen;
  pointer-events: none;
  transform: translate3d(calc(var(--tx) * 1px), calc(var(--ty) * 1px), 0);
  will-change: transform, opacity;
  transition: opacity .6s ease;
  z-index: 0;
}
/* uspokojenie przy bezruchu: latarka przygasa do ambientu */
.hero.is-idle .hero-torch { opacity: .4; }

/* treść jako JEDEN blok podąża minimalnie — bez migotania gradientowego h1 */
.hero-inner {
  transform: translate3d(calc(var(--px) * 4px), calc(var(--py) * 3px), 0);
}

@media (prefers-reduced-motion: reduce) {
  .hero-bg,
  .hero-bg::after,
  .hero-inner { transform: none !important; }
  .hero-torch { display: none; }
}

/* ---------- sekcje ---------- */
.section { padding: clamp(5rem, 9vw, 8rem) 0; }
.section-alt { background: var(--bg-alt); }

.section-head {
  max-width: 720px;
  margin-bottom: 3.6rem;
}
.section-sub {
  color: var(--muted);
  margin-top: 1.1rem;
  font-size: 1.03rem;
}

/* ---------- karty usług ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 1.4rem;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.1rem 1.9rem;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--green));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 22px 48px -22px rgba(11, 20, 32, .28);
  border-color: transparent;
}
.card:hover::before { transform: scaleX(1); }

.card-icon {
  width: 48px; height: 48px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(24, 95, 165, .1), rgba(15, 110, 86, .1));
  color: var(--blue);
  margin-bottom: 1.4rem;
}
.card-icon svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: .7rem; }
.card p { color: var(--muted); font-size: .96rem; }

/* ---------- sekcja ciemna / DC305 ---------- */
.section-dark {
  background: var(--dark);
  color: rgba(255, 255, 255, .74);
}
.section-dark h2 { color: #fff; }
.section-dark p { color: rgba(255, 255, 255, .72); }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: center;
}
.split-text h2 { margin-bottom: 1.3rem; }

.check-list {
  margin: 2rem 0 2.6rem;
  display: grid;
  gap: .85rem;
}
.check-list li {
  position: relative;
  padding-left: 2rem;
  color: rgba(255, 255, 255, .82);
  font-size: .97rem;
}
.check-list li::before {
  content: '';
  position: absolute;
  left: 0; top: .45rem;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(15, 110, 86, .25);
  border: 1px solid var(--green);
}
.check-list li::after {
  content: '';
  position: absolute;
  left: 6px; top: .72rem;
  width: 5px; height: 9px;
  border: solid #35c79b;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* wizualizacja-panel */
.panel {
  background: linear-gradient(160deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .02));
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8);
}
.panel-head {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .9rem 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  background: rgba(255, 255, 255, .04);
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .22); }
.panel-head em {
  margin-left: auto;
  font-style: normal;
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .4);
}
.panel-body { padding: 1.6rem 1.4rem; }

.metric {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1.4rem;
  font-size: .82rem;
  color: rgba(255, 255, 255, .5);
}
.metric b { font-size: 1.6rem; color: #fff; }

.bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 120px;
  margin-bottom: 1.6rem;
}
.bars i {
  flex: 1;
  height: var(--h);
  border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, var(--blue-300), var(--blue));
  opacity: .85;
  transform-origin: bottom;
  animation: grow 1s var(--ease) backwards;
}
.bars i:nth-child(4) { background: linear-gradient(180deg, #35c79b, var(--green)); }
.bars i:nth-child(8) { background: linear-gradient(180deg, #35c79b, var(--green)); }
.bars i:nth-child(1) { animation-delay: .05s; }
.bars i:nth-child(2) { animation-delay: .12s; }
.bars i:nth-child(3) { animation-delay: .19s; }
.bars i:nth-child(4) { animation-delay: .26s; }
.bars i:nth-child(5) { animation-delay: .33s; }
.bars i:nth-child(6) { animation-delay: .40s; }
.bars i:nth-child(7) { animation-delay: .47s; }
.bars i:nth-child(8) { animation-delay: .54s; }

@keyframes grow { from { transform: scaleY(0); opacity: 0; } }

.rows { display: grid; gap: .7rem; }
.row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: .7rem;
  border-top: 1px solid rgba(255, 255, 255, .07);
}
.row span {
  height: 7px;
  border-radius: 4px;
  background: rgba(255, 255, 255, .16);
  flex: 1;
}
.row b {
  height: 7px;
  width: 38px;
  border-radius: 4px;
  background: rgba(24, 95, 165, .55);
}
.row:nth-child(2) span { flex: .7; }
.row:nth-child(3) span { flex: .85; }

/* ---------- NELA (split odwrócony + jasny panel) ---------- */
.split-reverse .split-text { order: 2; }
.split-reverse .split-visual { order: 1; }

/* checklista na jasnym tle */
.check-list-light li { color: var(--text); }
.check-list-light li::before {
  background: rgba(15, 110, 86, .12);
  border-color: var(--green);
}
.check-list-light li::after { border-color: var(--green); }

/* jasny panel "powiązań" */
.panel-light {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 30px 60px -30px rgba(11, 20, 32, .28);
}
.panel-light .panel-head {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}
.panel-light .dot { background: rgba(11, 20, 32, .16); }
.panel-light .panel-head em { color: var(--muted); }

.asset-title {
  font-size: 1.05rem;
  color: var(--ink);
  margin-bottom: 1.1rem;
}
.asset-title b { color: var(--blue); font-weight: 700; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.6rem;
}
.chips span {
  font-size: .76rem;
  font-weight: 500;
  color: var(--blue);
  background: rgba(24, 95, 165, .08);
  border: 1px solid rgba(24, 95, 165, .18);
  padding: .32rem .8rem;
  border-radius: 999px;
}

.linked { display: grid; gap: .1rem; }
.linked-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .8rem 0;
  border-top: 1px solid var(--line);
  font-size: .95rem;
  color: var(--text);
}
.linked-row:first-child { border-top: 0; }
.badge {
  font-size: .8rem;
  font-weight: 700;
  color: var(--blue);
  background: rgba(24, 95, 165, .1);
  padding: .2rem .7rem;
  border-radius: 999px;
  min-width: 34px;
  text-align: center;
}
.badge-green {
  color: var(--green);
  background: rgba(15, 110, 86, .1);
}

/* ---------- o nas ---------- */
.about {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.about-text { display: grid; gap: 1.2rem; }
.about-text .big {
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  color: var(--ink);
  font-weight: 500;
  line-height: 1.5;
}
.about-text p { color: var(--muted); }
.about-text strong { color: var(--blue); font-weight: 700; }

/* ---------- CTA ---------- */
.section-cta {
  background:
    radial-gradient(ellipse 60% 80% at 80% 20%, rgba(15, 110, 86, .35), transparent 60%),
    linear-gradient(150deg, #0B1420, #14304d);
  color: #fff;
  text-align: center;
}
.section-cta h2 { color: #fff; margin-bottom: 1.2rem; }
.cta-inner .lead {
  color: rgba(255, 255, 255, .74);
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 3.4rem;
  text-align: left;
}
.contact-card {
  display: grid;
  gap: .45rem;
  padding: 1.6rem 1.5rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
  transition: background .3s, transform .3s var(--ease), border-color .3s;
}
a.contact-card:hover {
  background: rgba(255, 255, 255, .11);
  border-color: rgba(255, 255, 255, .3);
  transform: translateY(-3px);
}
.contact-label {
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue-300);
  font-weight: 600;
}
.contact-value {
  font-size: 1.02rem;
  font-weight: 500;
  color: #fff;
  line-height: 1.5;
}

/* ---------- footer ---------- */
.site-footer {
  background: #08101a;
  padding: 3rem 0;
  color: rgba(255, 255, 255, .5);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-logo { filter: brightness(0) invert(1); opacity: .85; width: 165px; }
.footer-copy { font-size: .87rem; line-height: 1.8; }
.footer-legal {
  font-size: .78rem;
  color: rgba(255, 255, 255, .35);
}
.footer-nav {
  display: flex;
  gap: 1.6rem;
  font-size: .9rem;
}
.footer-nav a { transition: color .2s; }
.footer-nav a:hover { color: #fff; }

/* ---------- reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.cards .reveal:nth-child(2) { transition-delay: .08s; }
.cards .reveal:nth-child(3) { transition-delay: .16s; }
.cards .reveal:nth-child(4) { transition-delay: .04s; }
.cards .reveal:nth-child(5) { transition-delay: .12s; }
.cards .reveal:nth-child(6) { transition-delay: .2s; }

/* ---------- scrim menu mobilnego ---------- */
/* przyciemnia całą stronę pod otwartą szufladą menu, by nie zlewała się z treścią;
   z-index 90 = pod nagłówkiem (100, w nim szuflada), nad treścią strony */
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(6, 12, 20, .6);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s var(--ease), visibility .35s var(--ease);
}
.nav-scrim.show { opacity: 1; visibility: visible; }
@media (min-width: 901px) { .nav-scrim { display: none; } }

/* ---------- responsywność ---------- */
@media (max-width: 900px) {
  .split, .about { grid-template-columns: 1fr; }
  .split-visual { order: -1; }

  .nav-toggle { display: flex; position: relative; z-index: 2; }
  .nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(80vw, 330px);
    background: var(--dark);
    padding: 6.5rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform .4s var(--ease);
    box-shadow: -20px 0 60px rgba(0, 0, 0, .55);
    z-index: 1;
  }
  .nav.open { transform: none; }
  .nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.6rem;
    font-size: 1.05rem;
  }
  .nav a, .site-header.scrolled .nav a { color: rgba(255, 255, 255, .85); }
  .nav-cta { margin-top: .5rem; }

  .nav-toggle.open span { background: #fff; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .footer-inner { justify-content: center; text-align: center; }
}

@media (max-width: 560px) {
  .brand img { width: 178px; }
  .hero { padding-top: 7.5rem; }
  .hero-actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}