/* ============================================================
   Trineo — design tokens
   Jasny layout + ciemnogranatowe sekcje akcentowe.
   Typografia: Space Grotesk (display) / IBM Plex Sans (tekst)
               / IBM Plex Mono (etykiety, dane).
   ============================================================ */
:root {
  --paper:      #F6F8FB;
  --ink:        #16243A;
  --muted:      #5A6B82;
  --navy-950:   #081429;
  --navy-800:   #0F2547;
  --on-dark:    #E8F0FA;
  --on-dark-mu: #9FB4CF;
  --cyan:       #2FB8E6;
  --cyan-deep:  #1380AC;
  --amber:      #FFB547;
  --line:       #D9E2EE;
  --line-dark:  #1C3A66;

  --ff-display: "Space Grotesk", system-ui, sans-serif;
  --ff-body:    "IBM Plex Sans", system-ui, sans-serif;
  --ff-mono:    "IBM Plex Mono", ui-monospace, monospace;

  --wrap: 1140px;
  --r: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
}

h1, h2, h3 {
  font-family: var(--ff-display);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 500; }
p  { margin: 0 0 1em; }
a  { color: var(--cyan-deep); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
.mono { font-family: var(--ff-mono); }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 24px; }
.sec  { padding: 88px 0; }
.sec-light { background: var(--paper); color: var(--ink); }
.sec-dark  { background: var(--navy-950); color: var(--on-dark); }
.sec-dark a { color: var(--cyan); }
.sec-dark h2, .sec-dark h3 { color: #fff; }

/* przerywnik-oscylogram między jasnymi sekcjami */
.sec-light + .sec-light { position: relative; }
.sec-light + .sec-light::before {
  content: "";
  position: absolute; top: 0; left: 50%;
  transform: translateX(-50%);
  width: min(var(--wrap), 92%); height: 14px;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="120" height="14" viewBox="0 0 120 14"><path d="M0 11h14V3h16v8h14V3h16v8h14V3h16v8h14V3h16" fill="none" stroke="%23D9E2EE" stroke-width="1.6"/></svg>') repeat-x left center;
}

/* --- eyebrow: monospace'owa etykieta z diodą --- */
.eyebrow {
  font-size: .8rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan-deep);
  display: flex; align-items: center; gap: .6em;
  margin-bottom: 1.1em;
}
.sec-dark .eyebrow { color: var(--cyan); }
.led {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 8px 1px rgba(255, 181, 71, .8);
  animation: led 2.4s ease-in-out infinite;
}
@keyframes led { 50% { opacity: .35; box-shadow: 0 0 2px 0 rgba(255,181,71,.4); } }

/* --- przyciski --- */
.btn {
  display: inline-block;
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 1rem;
  padding: 13px 28px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); }
/* selektory z elementem `a`, bo .sec-dark a ma wyższą specyficzność
   niż sama klasa .btn-* i nadpisywała kolor tekstu przycisków */
a.btn-solid, .sec-dark a.btn-solid { background: var(--cyan); color: #06121F; }
a.btn-solid:hover { background: #4FC8EF; }
a.btn-ghost, .sec-dark a.btn-ghost { border-color: var(--line-dark); color: var(--on-dark); }
.sec-light a.btn-ghost { border-color: var(--line); color: var(--ink); }
a.btn-ghost:hover { border-color: var(--cyan); }

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 32px;
  padding: 14px 24px;
  background: rgba(246, 248, 251, .85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; }
.brand img { display: block; }
.nav { display: flex; gap: 26px; margin-inline: auto; }
.nav a {
  color: var(--ink);
  font-weight: 600; font-size: .95rem;
}
.nav a:hover { color: var(--cyan-deep); text-decoration: none; }
.topbar-mail { font-size: .85rem; color: var(--muted); }
.nav-toggle { display: none; }

/* ============================================================
   Hero
   ============================================================ */
.hero { padding: 96px 0 0; overflow: hidden; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}
.hero-copy p { color: var(--on-dark-mu); font-size: 1.12rem; max-width: 34em; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 1.8em; }
.hero-art svg { width: 100%; height: auto; display: block; }

/* animacja: przepływ sygnału po ścieżkach + ping węzłów */
.traces .flow {
  stroke-dasharray: 6 10;
  animation: flow 2.8s linear infinite;
}
@keyframes flow { to { stroke-dashoffset: -64; } }
.ping { transform-origin: center; transform-box: fill-box; animation: ping 3s ease-out infinite; opacity: 0; }
.ping-2 { animation-delay: 1.5s; }
@keyframes ping {
  0% { transform: scale(.4); opacity: .9; }
  70% { transform: scale(1.6); opacity: 0; }
  100% { opacity: 0; }
}

/* dolna krawędź hero: fala prostokątna (oscyloskop) */
.hero-wave {
  height: 36px; margin-top: 64px;
  background:
    url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="160" height="36" viewBox="0 0 160 36"><path d="M0 28h20V8h20v20h20V8h20v20h20V8h20v20h20V8h20" fill="none" stroke="%232FB8E6" stroke-opacity=".5" stroke-width="1.6"/></svg>') repeat-x left bottom,
    var(--navy-950);
}

/* ============================================================
   Stats
   ============================================================ */
.stats { padding: 64px 0; }
.stats-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.stat { border-left: 2px solid var(--cyan); padding-left: 20px; }
.stat-value {
  font-size: 1.6rem; font-weight: 500; color: var(--navy-800);
  margin-bottom: .2em;
}
.stat-text { color: var(--muted); margin: 0; }

/* ============================================================
   Karty oferty
   ============================================================ */
.cards {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: 40px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 30px 26px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: 0 14px 34px -18px rgba(15, 37, 71, .35);
}
.card-icon {
  width: 52px; height: 52px; border-radius: 10px;
  display: grid; place-items: center;
  background: var(--navy-950); color: var(--cyan);
  margin-bottom: 18px;
}
.card-text { color: var(--muted); font-size: .98rem; }
.card-text p { margin: 0; }

/* ============================================================
   Technology (ciemna)
   ============================================================ */
.tech-intro { max-width: 46em; color: var(--on-dark-mu); }
.tech-cols {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
  margin-top: 36px;
}
.tech-col {
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
  padding: 26px;
  background: linear-gradient(160deg, var(--navy-800), var(--navy-950) 70%);
}
.tech-col h3 {
  font-family: var(--ff-mono); font-size: .95rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: .1em; color: var(--cyan);
}
.tech-list { list-style: none; margin: 18px 0 0; padding: 0; }
.tech-list li {
  padding: 9px 0 9px 22px;
  border-bottom: 1px dashed var(--line-dark);
  position: relative;
  color: var(--on-dark);
}
.tech-list li:last-child { border-bottom: 0; }
.tech-list li::before {
  content: "▸"; position: absolute; left: 0; color: var(--cyan);
}
.tech-cta {
  margin-top: 40px;
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap;
  color: var(--on-dark-mu);
}

/* ============================================================
   Process — kroki połączone linią sygnałową
   ============================================================ */
.steps {
  list-style: none; counter-reset: none;
  margin: 44px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
  position: relative;
}
/* linia łącząca węzły (chowana na mobile) */
.steps::before {
  content: "";
  position: absolute; top: 17px; left: 14px; right: 14px;
  border-top: 1.6px dashed var(--line);
}
.step { position: relative; padding-top: 52px; }
.step-no {
  position: absolute; top: 0; left: 0;
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--navy-950); color: var(--cyan);
  font-size: .85rem;
  box-shadow: 0 0 0 6px var(--paper); /* "przerywa" linię wokół węzła */
}
.step h3 { font-size: 1.05rem; margin-bottom: .35em; }
.step-text { color: var(--muted); font-size: .95rem; }
.step-text p { margin: 0; }

/* ============================================================
   Industries
   ============================================================ */
.ind-list { margin-top: 36px; border-top: 1px solid var(--line); }
.ind-row {
  display: grid; grid-template-columns: 280px 1fr; gap: 24px;
  padding: 26px 0; border-bottom: 1px solid var(--line);
}
.ind-name { margin: 0; color: var(--navy-800); }
.ind-text { color: var(--muted); }
.ind-text p { margin: 0; }
.ind-note { margin-top: 28px; color: var(--ink); max-width: 46em; }
.ind-note p { margin: 0; }

/* ============================================================
   Careers
   ============================================================ */
.careers-grid {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px;
  align-items: start; margin-top: 12px;
}
.careers-copy p { color: var(--muted); }
.careers-copy .btn { margin-top: 10px; }
.benefits {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
}
.benefit {
  display: flex; gap: 14px; align-items: flex-start;
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--r); padding: 16px;
  font-size: .95rem;
}
.benefit-icon { color: var(--cyan-deep); flex: 0 0 auto; margin-top: 2px; }

/* ============================================================
   Contact / footer (ciemna)
   ============================================================ */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px;
  margin-top: 24px;
}
.contact-line {
  display: flex; gap: 12px; align-items: flex-start;
  margin-bottom: 1.1em;
}
.contact-line .ic { flex: 0 0 auto; margin-top: 4px; color: var(--cyan); }
.registry {
  list-style: none; padding: 0; margin: 1.6em 0 0;
  font-size: .82rem; color: var(--on-dark-mu);
}
.awards-text { color: var(--on-dark-mu); font-size: .95rem; }
.ppnt-logo { display: inline-block; margin-bottom: 14px; }
.awards { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; }
.awards img { height: 110px; width: auto; }
.map-frame {
  border: 1px solid var(--line-dark); border-radius: var(--r);
  overflow: hidden; aspect-ratio: 4 / 3;
}
.map-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.foot-bottom {
  margin-top: 56px; padding-top: 22px;
  border-top: 1px solid var(--line-dark);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  font-size: .82rem; color: var(--on-dark-mu);
}

/* ============================================================
   Responsywność
   ============================================================ */
@media (max-width: 980px) {
  .hero-grid, .careers-grid { grid-template-columns: 1fr; }
  .hero-art { max-width: 440px; margin-inline: auto; }
  .cards, .stats-grid, .tech-cols, .contact-grid, .steps { grid-template-columns: 1fr 1fr; }
  .steps::before { display: none; }
  .ind-row { grid-template-columns: 1fr; gap: 6px; }
}
@media (max-width: 680px) {
  .sec { padding: 64px 0; }
  .cards, .stats-grid, .tech-cols, .contact-grid, .benefits, .steps { grid-template-columns: 1fr; }
  .topbar { gap: 16px; }
  .topbar-mail { display: none; }
  .nav {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: 8px 0;
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 24px; }
  .nav-toggle {
    display: grid; gap: 5px; margin-left: auto;
    background: none; border: 0; padding: 8px; cursor: pointer;
  }
  .nav-toggle span {
    width: 22px; height: 2px; background: var(--ink); display: block;
  }
}

/* dostępność */
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .traces .flow, .ping, .led { animation: none; }
  .btn, .card { transition: none; }
}