/* ===========================
   NXT s.r.o. — Main Stylesheet
   =========================== */

:root {
  --bg:        #0a0c10;
  --bg2:       #0f1218;
  --bg3:       #141820;
  --card:      #151b26;
  --border:    rgba(255,255,255,0.07);
  --accent:    #3b82f6;
  --accent2:   #8b5cf6;
  --accent3:   #06b6d4;
  --text:      #e2e8f0;
  --muted:     #64748b;
  --white:     #ffffff;
  --radius:    12px;
  --radius-lg: 20px;
  --font:      'Inter', system-ui, sans-serif;
  --font-display: 'Space Grotesk', sans-serif;
  --nav-h:     72px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5 { font-family: var(--font-display); line-height: 1.2; color: var(--white); }
h1 { font-size: clamp(2.2rem, 5vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }
p  { color: var(--text); opacity: 0.85; }
a  { text-decoration: none; color: inherit; }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.section   { padding: 100px 0; }
.two-col   { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center; }
.section-header { text-align: center; margin-bottom: 4rem; }
.section-label  {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.25);
  padding: 0.3rem 0.9rem;
  border-radius: 100px;
  margin-bottom: 1.2rem;
}

/* ---- Buttons ---- */
.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: var(--white);
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none; cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 24px rgba(59,130,246,0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(59,130,246,0.4);
}
.btn-ghost {
  display: inline-flex; align-items: center;
  color: var(--text);
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-weight: 500;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-full { width: 100%; justify-content: center; }

/* ============================
   NAVBAR
   ============================ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  transition: background var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  background: rgba(10,12,16,0.92);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 2rem;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.logo { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--white); }
.logo span { color: var(--accent); }
.nav-links { list-style: none; display: flex; gap: 2rem; align-items: center; }
.nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--muted); transition: color var(--transition); }
.nav-links a:hover { color: var(--white); }
.btn-nav {
  background: linear-gradient(135deg, var(--accent), var(--accent2)) !important;
  color: var(--white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
}
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }

/* ============================
   MOBILE MENU
   ============================ */
.mobile-menu {
  position: fixed; top: var(--nav-h); left: 0; right: 0; z-index: 99;
  background: rgba(10,12,16,0.97);
  backdrop-filter: blur(16px);
  padding: 1.5rem 2rem;
  transform: translateY(-110%);
  transition: transform var(--transition);
  border-bottom: 1px solid var(--border);
}
.mobile-menu.open { transform: translateY(0); }
.mobile-menu ul { list-style: none; display: flex; flex-direction: column; gap: 1.25rem; }
.mobile-menu a { font-size: 1.1rem; font-weight: 500; color: var(--text); }

/* ============================
   HERO
   ============================ */
.hero {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding-top: var(--nav-h);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
}
.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}
#particles { position: absolute; inset: 0; }
.hero-content {
  position: relative; z-index: 1;
  max-width: 800px; padding: 0 2rem;
  text-align: center;
}
.hero-badge {
  display: inline-block;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent3);
  background: rgba(6,182,212,0.1);
  border: 1px solid rgba(6,182,212,0.25);
  padding: 0.35rem 1rem; border-radius: 100px;
  margin-bottom: 1.5rem;
}
.hero h1 { margin-bottom: 1.5rem; }
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--accent2), var(--accent3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.typed-text::after {
  content: '|';
  -webkit-text-fill-color: var(--accent);
  animation: blink 0.8s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }
.hero-sub {
  max-width: 580px; margin: 0 auto 2.5rem;
  font-size: 1.1rem; opacity: 0.7;
}
.hero-cta { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.scroll-hint {
  position: absolute; bottom: 2.5rem; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  font-size: 0.7rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--muted);
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--muted), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse { 0%,100%{opacity:0.3;transform:scaleY(1)} 50%{opacity:1;transform:scaleY(1.2)} }

/* ============================
   STATS BAND
   ============================ */
.stats-band {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 0;
}
.stats-band .container {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 2rem; text-align: center;
}
.stat-item {}
.stat-num {
  display: block;
  font-family: var(--font-display); font-size: 2.8rem; font-weight: 700; color: var(--white);
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.stat-label { font-size: 0.85rem; color: var(--muted); margin-top: 0.25rem; display: block; }

/* ============================
   ABOUT
   ============================ */
.about { background: var(--bg); }
.about-text .section-label { display: inline-block; margin-bottom: 1rem; }
.about-text h2 { margin-bottom: 1.25rem; }
.about-text p { margin-bottom: 1rem; max-width: 480px; }
.about-text .btn-primary { margin-top: 1.5rem; }

.card-stack { position: relative; }
.info-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}
.info-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.4); }
.card-1 { margin-bottom: 1rem; }
.card-2 { margin-left: 2rem; margin-bottom: 1rem; }
.card-3 { margin-left: 1rem; }
.card-icon { font-size: 1.25rem; color: var(--accent); margin-bottom: 0.75rem; }
.info-card strong { display: block; color: var(--white); margin-bottom: 0.4rem; font-size: 0.95rem; }
.info-card p { font-size: 0.875rem; opacity: 0.7; margin: 0; }

/* ============================
   SERVICES
   ============================ */
.services { background: var(--bg2); }
.services-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem;
}
.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59,130,246,0.3);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3), 0 0 0 1px rgba(59,130,246,0.1);
}
.service-icon {
  width: 48px; height: 48px; color: var(--accent);
  margin-bottom: 1.25rem;
}
.service-icon svg { width: 100%; height: 100%; }
.service-card h3 { margin-bottom: 0.75rem; font-size: 1.1rem; }
.service-card > p { font-size: 0.9rem; margin-bottom: 1.25rem; }
.service-card ul { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.service-card li {
  font-size: 0.82rem; color: var(--muted);
  padding-left: 1rem; position: relative;
}
.service-card li::before {
  content: '→';
  position: absolute; left: 0;
  color: var(--accent);
}

/* ============================
   TECHNOLOGY
   ============================ */
.tech { background: var(--bg); }
.tech-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem;
}
.tech-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition);
}
.tech-card:hover { transform: translateY(-4px); border-color: rgba(59,130,246,0.3); }
.tech-logo {
  width: 64px; height: 64px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 0.85rem; font-weight: 700;
  margin: 0 auto 1.25rem;
  letter-spacing: 0.05em;
}
.oracle-logo     { background: linear-gradient(135deg,#f97316,#ef4444); color:#fff; }
.databricks-logo { background: linear-gradient(135deg,#f59e0b,#ef4444); color:#fff; }
.spark-logo      { background: linear-gradient(135deg,#f59e0b,#fb923c); color:#fff; }
.cloud-logo      { background: linear-gradient(135deg,#3b82f6,#06b6d4); color:#fff; }
.iac-logo        { background: linear-gradient(135deg,#8b5cf6,#3b82f6); color:#fff; }
.data-logo       { background: linear-gradient(135deg,#10b981,#06b6d4); color:#fff; }
.tech-card h4    { margin-bottom: 0.5rem; }
.tech-card p     { font-size: 0.82rem; opacity: 0.65; }

/* ============================
   CONTACT
   ============================ */
.contact { background: var(--bg2); }
.contact-text .section-label { display: inline-block; margin-bottom: 1rem; }
.contact-text h2 { margin-bottom: 1.25rem; }
.contact-text > p { max-width: 420px; margin-bottom: 2rem; }
.contact-details { display: flex; flex-direction: column; gap: 0.75rem; }
.contact-item { display: flex; gap: 1rem; font-size: 0.9rem; }
.ci-label { color: var(--muted); min-width: 70px; }
.contact-link { color: var(--accent); transition: color var(--transition); }
.contact-link:hover { color: var(--accent3); }

/* Form */
.contact-form { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 2.5rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--text); margin-bottom: 0.5rem; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: var(--font); font-size: 0.9rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted); }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: var(--bg3); }
.field-error { display: block; font-size: 0.78rem; color: #f87171; margin-top: 0.3rem; min-height: 1em; }
.form-success {
  display: none; margin-top: 1rem; text-align: center;
  background: rgba(16,185,129,0.12); border: 1px solid rgba(16,185,129,0.3);
  border-radius: 8px; padding: 0.75rem 1rem;
  color: #34d399; font-size: 0.9rem;
}

/* ============================
   FOOTER
   ============================ */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 2rem;
}
.footer-brand .logo { font-size: 1.4rem; }
.footer-brand p { font-size: 0.82rem; color: var(--muted); margin-top: 0.4rem; line-height: 1.5; }
.footer-links { display: flex; gap: 2rem; flex-wrap: wrap; }
.footer-links a { font-size: 0.875rem; color: var(--muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--white); }
.footer-legal p { font-size: 0.78rem; color: var(--muted); }
.easter-egg { font-size: 0.7rem; color: #1e293b; text-decoration: none; margin-top: 0.4rem; display: inline-block; transition: color 0.4s; }
.easter-egg:hover { color: var(--accent); }

/* ============================
   REVEAL ANIMATIONS
   ============================ */
.reveal, .reveal-left, .reveal-right {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-left  { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }

.reveal.visible,
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: translate(0);
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 1024px) {
  .services-grid, .tech-grid { grid-template-columns: repeat(2,1fr); }
  .two-col { gap: 3rem; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .two-col { grid-template-columns: 1fr; }
  .stats-band .container { grid-template-columns: repeat(2,1fr); }
  .services-grid, .tech-grid { grid-template-columns: 1fr; }
  .card-2 { margin-left: 1rem; }
  .card-3 { margin-left: 0; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}
@media (max-width: 480px) {
  .stats-band .container { grid-template-columns: 1fr 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
}