/* ==========================================================================
   TechNet Kft. — style.css ("Duotone Premium" per Claude Design hand-off)
   Palette: deep blue-black, amber accent, amber duotone wash over photos
   Type:    Archivo (display) · IBM Plex Sans (body) · IBM Plex Mono (labels)
   ========================================================================== */

:root {
  --bg0: #0A0F1C;
  --bg1: #0F1626;
  --line: rgba(148, 166, 196, 0.16);
  --line-strong: rgba(148, 166, 196, 0.28);
  --ink: #E9EEF7;
  --ink-soft: #c3cede;
  --muted: #93A1B8;
  --accent: #FFB224;
  --accent-soft: rgba(255, 178, 36, 0.14);
  --accent-ink: #1A1206;
  --img-tint: rgba(255, 178, 36, 0.16);
  --sec-pad: 112px;
  --font-display: "Archivo", "Segoe UI", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", Consolas, monospace;
  --max: 1120px;
  --pad-x: 32px;
  --header-h: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg0);
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: var(--accent); color: var(--accent-ink); }

/* ---------- Shared bits ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.eyebrow::before { content: "// "; opacity: 0.6; }

.section { position: relative; border-top: 1px solid var(--line); }

.section-alt { background: var(--bg1); }

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--sec-pad) var(--pad-x);
  position: relative;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
  max-width: 22ch;
  margin-bottom: 1.25rem;
}

.section-lead { color: var(--muted); max-width: 58ch; margin-bottom: 3rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 15px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.btn-solid {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 8px 26px rgba(255, 178, 36, 0.24);
}

.btn-solid:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(255, 178, 36, 0.3); }

.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: rgba(255, 255, 255, 0.02); }

.btn-ghost:hover { border-color: var(--muted); transform: translateY(-2px); }

.btn-small { padding: 10px 18px; font-size: 13.5px; box-shadow: 0 6px 20px rgba(255, 178, 36, 0.2); }

/* ---------- Parallax image layers ---------- */

.parallax-img {
  position: absolute;
  left: 0;
  right: 0;
  will-change: transform;
  background-position: center;
  background-size: cover;
}

.hero-img {
  inset: -35% 0;
  height: 170%;
  background-image:
    linear-gradient(var(--img-tint), var(--img-tint)),
    url("../assets/img/hero.jpg");
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #0A0F1C 0%, rgba(10, 15, 28, 0.82) 42%, rgba(10, 15, 28, 0.35) 100%);
}

.services-img {
  inset: -40% 0;
  height: 180%;
  background-image:
    linear-gradient(rgba(10, 15, 28, 0.28), rgba(10, 15, 28, 0.52)),
    linear-gradient(var(--img-tint), var(--img-tint)),
    url("../assets/img/services.jpg");
}

.band-img {
  inset: -42% 0;
  height: 184%;
  background-image:
    linear-gradient(rgba(6, 9, 16, 0.74), rgba(6, 9, 16, 0.74)),
    linear-gradient(var(--img-tint), var(--img-tint)),
    url("../assets/img/band.jpg");
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(10, 15, 28, 0.72);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--max);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: flex;
  align-items: center;
  gap: 32px;
}

.logo { display: inline-flex; align-items: center; gap: 0.65rem; color: var(--ink); }

.logo-mark { width: 32px; height: 32px; }

.logo-word {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.logo-accent { color: var(--accent); }

.logo-kft { font-weight: 500; font-size: 0.8em; color: var(--muted); }

.site-nav { display: flex; gap: 1.75rem; margin-left: auto; }

.site-nav a {
  position: relative;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.15s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 0;
  height: 1.5px;
  background: var(--accent);
  transition: width 0.2s ease;
}

.site-nav a:hover { color: var(--ink); }

.site-nav a:hover::after { width: 100%; }

.header-tools { display: flex; align-items: center; gap: 0.9rem; }

.nav-toggle { display: none; }

/* ---------- Language dropdown ---------- */

.lang { position: relative; }

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(148, 166, 196, 0.2);
  border-radius: 999px;
  padding: 7px 13px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.lang-btn:hover { border-color: var(--muted); }

.lang-btn .chev { width: 11px; height: 11px; color: var(--muted); transition: transform 0.18s ease; }

.lang.open .lang-btn .chev { transform: rotate(180deg); }

.flag {
  display: inline-flex;
  width: 18px;
  height: 12px;
  border-radius: 2px;
  overflow: hidden;
  outline: 1px solid rgba(255, 255, 255, 0.14);
  flex: none;
}

.flag svg { width: 100%; height: 100%; }

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  list-style: none;
  background: var(--bg1);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.4rem;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.lang.open .lang-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }

.lang-menu li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  cursor: pointer;
}

.lang-menu li:hover, .lang-menu li:focus-visible { background: rgba(255, 255, 255, 0.06); }

.lang-menu li[aria-selected="true"] { color: var(--accent); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  margin-top: var(--header-h);
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-art { position: absolute; inset: 0; pointer-events: none; }

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
  padding: 72px var(--pad-x);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6.2vw, 5.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.02;
  max-width: 15ch;
  margin-bottom: 1.5rem;
}

.hero-title em {
  font-style: italic;
  font-weight: 700;
  color: var(--accent);
}

.hero-sub {
  font-size: clamp(1.05rem, 1.5vw, 1.22rem);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 54ch;
  margin-bottom: 2.5rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 3.5rem; }

.hero-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-tags a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid rgba(148, 166, 196, 0.2);
  border-radius: 999px;
  padding: 8px 15px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.hero-tags a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Services (split panel) ---------- */

.section-services {
  background: var(--bg1);
  border-top: 1px solid var(--line);
}

.services-split {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.services-content { padding: var(--sec-pad) 56px var(--sec-pad) var(--pad-x); }

.service-items { display: grid; gap: 30px; margin-top: 2.5rem; }

.service-item { display: flex; gap: 1.2rem; align-items: flex-start; }

.service-item h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.service-item p { color: var(--muted); font-size: 1rem; line-height: 1.6; }

.card-icon {
  flex: none;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 11px;
}

.card-icon svg { width: 26px; height: 26px; }

.services-photo {
  position: relative;
  overflow: hidden;
  border-left: 1px solid var(--line);
  min-height: 520px;
}

/* ---------- Expertise (image tiles) ---------- */

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.tile {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg1);
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.tile:hover { transform: translateY(-5px); border-color: rgba(255, 178, 36, 0.4); }

.tile-img {
  height: 180px;
  background-position: center;
  background-size: cover;
}

.tile-img-flow {
  background-image:
    linear-gradient(rgba(10, 15, 28, 0.15), rgba(10, 15, 28, 0.7)),
    linear-gradient(var(--img-tint), var(--img-tint)),
    url("../assets/img/tile-flow.jpg");
}

.tile-img-telemetry {
  background-image:
    linear-gradient(rgba(10, 15, 28, 0.15), rgba(10, 15, 28, 0.7)),
    linear-gradient(var(--img-tint), var(--img-tint)),
    url("../assets/img/telemetry.jpg");
}

.tile-img-logistics {
  background-image:
    linear-gradient(rgba(10, 15, 28, 0.15), rgba(10, 15, 28, 0.7)),
    linear-gradient(var(--img-tint), var(--img-tint)),
    url("../assets/img/tile-logistics.jpg");
}

.tile-img-mobile {
  background-image:
    linear-gradient(rgba(10, 15, 28, 0.15), rgba(10, 15, 28, 0.7)),
    linear-gradient(var(--img-tint), var(--img-tint)),
    url("../assets/img/tile-mobile.jpg");
}

.tile-body { padding: 20px; }

.tile-body h3 {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
}

.tile-body p { color: var(--muted); font-size: 0.92rem; line-height: 1.5; }

/* ---------- Statement band ---------- */

.band {
  position: relative;
  overflow: hidden;
  padding: clamp(6rem, 10vw, 9rem) var(--pad-x);
  text-align: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.band-art { position: absolute; inset: 0; pointer-events: none; }

.band-quote {
  position: relative;
  z-index: 2;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.015em;
  line-height: 1.25;
  max-width: 26ch;
  margin: 0 auto;
}

.band-quote::before { content: "“"; color: var(--accent); }
.band-quote::after  { content: "”"; color: var(--accent); }

/* ---------- Approach ---------- */

.steps {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 2.5rem;
}

.step {
  position: relative;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

.step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 56px;
  height: 2px;
  background: var(--accent);
}

.step-no {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.14em;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0.5rem 0 0.6rem;
}

.step p { color: var(--muted); line-height: 1.6; }

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
  align-items: start;
  margin-top: 2.5rem;
}

.contact-lead { color: var(--muted); margin-bottom: 2.2rem; max-width: 40ch; }

.contact-list { list-style: none; display: grid; gap: 22px; }

.contact-list li { display: grid; gap: 0.15rem; }

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-list a {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent);
  transition: opacity 0.15s ease;
}

.contact-list a:hover { opacity: 0.8; }

.contact-form {
  display: grid;
  gap: 18px;
  background: var(--bg0);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px;
}

.contact-form label { display: grid; gap: 0.4rem; font-size: 0.88rem; font-weight: 500; }

.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg1);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 12px 14px;
  transition: border-color 0.15s ease;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(147, 161, 184, 0.55); }

.contact-form input:focus,
.contact-form textarea:focus { outline: none; border-color: var(--accent); }

.contact-form .btn { justify-self: start; margin-top: 0.3rem; padding: 14px 28px; }

.form-note { font-size: 0.8rem; color: var(--muted); }

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding: 48px var(--pad-x); }

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px 48px;
}

.footer-nav { display: flex; flex-wrap: wrap; gap: 1.4rem; }

.footer-nav a { font-size: 0.88rem; color: var(--muted); transition: color 0.15s ease; }

.footer-nav a:hover { color: var(--ink); }

.footer-meta {
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--muted);
  text-align: right;
  line-height: 1.7;
}

/* ---------- Reveal on scroll ---------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }

.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .expertise-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  :root { --sec-pad: 72px; --pad-x: 20px; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg1);
    border-bottom: 1px solid var(--line);
    padding: 0.6rem 1.5rem 1rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
  }

  .site-nav.open { opacity: 1; transform: translateY(0); pointer-events: auto; }

  .site-nav a { padding: 0.8rem 0; font-size: 1rem; border-bottom: 1px solid var(--line); }

  .site-nav a::after { display: none; }

  .site-nav a:last-child { border-bottom: none; }

  .header-tools { margin-left: auto; }

  .header-cta { display: none; }

  .nav-toggle {
    display: grid;
    gap: 5px;
    place-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--line);
    border-radius: 10px;
    cursor: pointer;
  }

  .nav-toggle span {
    display: block;
    width: 17px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.2s ease;
  }

  .nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child  { transform: translateY(-3.5px) rotate(-45deg); }

  .services-split { grid-template-columns: 1fr; }

  .services-content { padding: var(--sec-pad) var(--pad-x); }

  .services-photo { border-left: none; border-top: 1px solid var(--line); min-height: 320px; }

  .contact-grid { grid-template-columns: 1fr; gap: 2.2rem; }

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

  .footer-meta { margin-left: 0; text-align: left; }
}

@media (max-width: 640px) {
  .expertise-grid { grid-template-columns: 1fr; }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .parallax-img { transform: none !important; }

  .reveal { opacity: 1; transform: none; transition: none; }

  .btn, .tile, .site-nav a::after { transition: none; }
}