/* =========================================================
   NextGen Retail s.r.o. — design tokens
   ========================================================= */
:root {
  --bg: #F7F8FA;
  --bg-raised: #FFFFFF;
  --bg-soft: #EFF2F7;
  --text: #0B1220;
  --text-soft: #4B5563;
  --text-faint: #7A8494;
  --line: #DFE3EA;
  --accent: #1B4DFF;
  --accent-deep: #0B2E99;
  --accent-soft: #E8EDFF;

  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --max-width: 1180px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* =========================================================
   Reset
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, p { margin: 0; }
button { font: inherit; cursor: pointer; }
input, textarea { font: inherit; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

h1, h2, h3 { font-family: var(--font-display); color: var(--text); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.9rem, 3.2vw, 2.75rem); font-weight: 600; line-height: 1.15; }
h3 { font-size: 1.2rem; font-weight: 600; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-2);
}

.lead { font-size: 1.15rem; color: var(--text-soft); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

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

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}
.btn-primary {
  background: var(--text);
  color: #fff;
}
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

/* =========================================================
   Header / Nav
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 248, 250, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
  gap: 1.5rem;
}
.logo { display: flex; align-items: center; gap: 0.65rem; }
.logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}
.nav-list {
  display: flex;
  gap: 2rem;
}
.nav-list a {
  font-size: 0.95rem;
  color: var(--text-soft);
  position: relative;
  padding-bottom: 4px;
  transition: color 0.2s var(--ease);
}
.nav-list a:hover { color: var(--text); }
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width 0.25s var(--ease);
}
.nav-list a:hover::after { width: 100%; }

.nav-cta { white-space: nowrap; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  margin: 0 auto;
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  padding: clamp(4rem, 10vw, var(--space-6)) 0 var(--space-5);
  overflow: hidden;
}
.hero-inner { position: relative; max-width: 760px; }
.hero-title {
  font-size: clamp(2.3rem, 5.4vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  margin-bottom: var(--space-3);
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--text-soft);
  max-width: 560px;
  margin-bottom: var(--space-4);
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* =========================================================
   About
   ========================================================= */
.about { padding: var(--space-5) 0; }
.about-inner { max-width: 760px; }
.about-inner h2 { margin-bottom: var(--space-3); }
.about-inner p + p { margin-top: var(--space-2); color: var(--text-soft); }

/* =========================================================
   Services
   ========================================================= */
.services { padding: var(--space-5) 0; background: var(--bg-soft); }
.services h2 { margin-bottom: var(--space-4); max-width: 620px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px -24px rgba(11, 18, 32, 0.25);
  border-color: var(--accent);
}
.card-icon {
  width: 44px; height: 44px;
  margin-bottom: var(--space-2);
}
.service-card h3 { margin-bottom: 0.6rem; }
.service-card p { color: var(--text-soft); font-size: 0.95rem; }

/* =========================================================
   Process
   ========================================================= */
.process { padding: var(--space-5) 0; }
.process h2 { margin-bottom: var(--space-4); }
.process-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.process-item {
  position: relative;
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
}
.process-index {
  display: block;
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}
.process-item h3 { margin-bottom: 0.6rem; }
.process-item p { color: var(--text-soft); font-size: 0.95rem; }

/* =========================================================
   Advantages
   ========================================================= */
.advantages { padding: var(--space-5) 0; background: var(--bg-soft); }
.advantages-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-5);
  align-items: start;
}
.advantages-text p:last-child { color: var(--text-soft); margin-top: var(--space-2); }
.advantages-list {
  display: grid;
  gap: 1.25rem;
}
.advantages-list li {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: grid;
  gap: 0.35rem;
}
.advantages-list strong { font-family: var(--font-display); font-size: 1.02rem; }
.advantages-list span { color: var(--text-soft); font-size: 0.92rem; }

/* =========================================================
   Contact
   ========================================================= */
.contact { padding: var(--space-5) 0; }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: var(--space-5);
}
.contact-info h2 { margin-bottom: var(--space-2); }
.contact-info p { color: var(--text-soft); margin-bottom: var(--space-3); }
.contact-details { display: grid; gap: 1rem; }
.contact-details dt {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.contact-details dd { margin: 0; font-weight: 500; }
.contact-details a:hover { color: var(--accent); }

.contact-form {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: grid;
  gap: 1.1rem;
}
.form-row { display: grid; gap: 0.4rem; }
.form-row label { font-size: 0.88rem; font-weight: 500; color: var(--text-soft); }
.form-row input[type="text"],
.form-row input[type="email"],
.form-row input[type="tel"],
.form-row textarea {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  background: var(--bg);
  color: var(--text);
  resize: vertical;
  transition: border-color 0.2s var(--ease);
}
.form-row input:focus, .form-row textarea:focus { border-color: var(--accent); }
.form-row-checkbox {
  grid-template-columns: auto 1fr;
  display: grid;
  align-items: start;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-soft);
}
.form-row-checkbox input { margin-top: 0.2rem; }
.form-row-checkbox a { color: var(--accent); }
.form-submit { justify-self: start; margin-top: 0.25rem; }
.form-status { font-size: 0.88rem; color: var(--accent-deep); min-height: 1.2em; }
.honeypot { position: absolute; left: -9999px; }

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  border-top: 1px solid var(--line);
  padding: var(--space-4) 0 var(--space-3);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
}
.footer-brand p {
  color: var(--text-soft);
  font-size: 0.88rem;
  margin-top: 0.75rem;
  line-height: 1.6;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  align-self: start;
}
.footer-links a { color: var(--text-soft); font-size: 0.9rem; }
.footer-links a:hover { color: var(--accent); }
.footer-copy {
  width: 100%;
  color: var(--text-faint);
  font-size: 0.82rem;
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
  margin-top: 0.5rem;
}

/* =========================================================
   Scroll reveal
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .service-card, .nav-toggle span { transition: none; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 960px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: 1fr; gap: 1.5rem; }
  .advantages-inner { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav, .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .site-header.nav-open .nav {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-raised);
    border-bottom: 1px solid var(--line);
    padding: 1.5rem;
  }
  .site-header.nav-open .nav-list {
    flex-direction: column;
    gap: 1.25rem;
  }
  .site-header.nav-open .nav-cta {
    display: inline-flex;
    margin: 1rem 1.5rem 1.5rem;
  }

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

@media (max-width: 480px) {
  .wrap { padding: 0 1.15rem; }
  .hero { padding-top: 3rem; }
  .contact-form { padding: var(--space-3); }
}