/* ═══════════════════════════════════════════════════
   PN CARS — Hlavní stylesheet
   ═══════════════════════════════════════════════════ */

:root {
  --black:        #050507;
  --dark:         #0a0a0f;
  --card:         #0f0f18;
  --blue:         #2a8fd4;
  --blue-light:   #4db8ff;
  --blue-dark:    #1a5f8e;
  --blue-accent:  #00d4ff;
  --silver:       #c0c8d8;
  --silver-light: #e8ecf4;
  --white:        #f0f4ff;
  --glow:         rgba(42,143,212,.35);
  --border:       rgba(42,143,212,.15);
  --border-hover: rgba(42,143,212,.4);

  --nav-h: 72px;
  --max-w: 1240px;

  --ease: cubic-bezier(.25,.46,.45,.94);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Exo 2', sans-serif;
  background: var(--black);
  color: var(--silver-light);
  overflow-x: hidden;
  line-height: 1.6;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 2px; }

/* ── Typography helpers ── */
.label {
  font-size: .7rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--blue-light);
  margin-bottom: .7rem;
  display: block;
}
.title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.05;
  color: var(--white);
}
.title span { color: var(--blue-accent); }
.subtitle {
  color: var(--silver);
  font-weight: 300;
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 580px;
  margin-top: .9rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 13px 32px;
  transition: all .3s var(--ease);
  clip-path: polygon(10px 0%,100% 0%,calc(100% - 10px) 100%,0% 100%);
}
.btn-primary {
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  color: var(--white);
  box-shadow: 0 0 28px rgba(42,143,212,.4);
}
.btn-primary:hover {
  box-shadow: 0 0 48px rgba(42,143,212,.7);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent;
  color: var(--silver-light);
  border: 1px solid rgba(192,200,216,.3);
}
.btn-ghost:hover {
  border-color: var(--blue-light);
  color: var(--blue-light);
  background: rgba(42,143,212,.08);
}

/* ── NAV ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5vw;
  background: rgba(5,5,7,.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: height .3s, background .3s;
}
#navbar.scrolled {
  height: 60px;
  background: rgba(5,5,7,.97);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}
.nav-links a {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--silver);
  position: relative;
  transition: color .3s;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--blue-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav-links a:hover,
.nav-links a.active { color: var(--blue-accent); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue-light);
  border: 1px solid var(--blue);
  padding: 8px 20px;
  clip-path: polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%);
  transition: all .3s;
}
.nav-cta:hover {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 0 20px var(--glow);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--silver);
  transition: all .3s;
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 60px; left: 0; right: 0;
  z-index: 199;
  background: rgba(5,5,7,.98);
  flex-direction: column;
  padding: 1.5rem 5vw;
  border-bottom: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--silver);
  padding: .9rem 0;
  border-bottom: 1px solid rgba(255,255,255,.05);
  transition: color .3s;
}
.mobile-menu a:hover { color: var(--blue-accent); }
.mobile-menu .nav-cta {
  margin-top: 1rem;
  display: inline-block;
  clip-path: none;
  text-align: center;
}

/* ── PAGE HEADER ── */
.page-header {
  padding: calc(var(--nav-h) + 80px) 5vw 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #060910 0%, var(--black) 100%);
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(42,143,212,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,143,212,.028) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 5vw; right: 5vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
}
.page-header-inner { position: relative; max-width: var(--max-w); margin: 0 auto; }

/* ── SECTIONS ── */
.section {
  padding: 96px 5vw;
}
.section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.section-header {
  margin-bottom: 3.5rem;
}
.section--dark { background: var(--dark); }
.section--card { background: var(--card); }

/*
  Oddělovací čára mezi sekcemi — řešena přes border-top + ::before pseudo-element.
  Žádné extra <div> elementy v HTML nejsou potřeba.
  Platí pro všechny sekce kromě první (hero je jiný element).
*/
.section {
  position: relative;
}
/* Gradient čára nahoře každé sekce (desktop i mobil — jedna čára, vždy) */
.section::before {
  content: '';
  position: absolute;
  top: 0; left: 5vw; right: 5vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  pointer-events: none;
}
/* První sekce hned za hero nemá čáru — hero má vlastní vizuální zakončení */
.hero + .section::before { display: none; }
/* Sekce za section-divider divem — divider je teď prázdný, skryjeme ho */
.section-divider { display: none; }

/* ── CARDS ── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 2.2rem;
  position: relative;
  overflow: hidden;
  transition: border-color .35s, transform .35s;
}
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-dark), var(--blue-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .4s var(--ease);
}
.card:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.card:hover::before { transform: scaleX(1); }

/* ── FOOTER ── */
footer {
  background: #020204;
  border-top: 1px solid var(--border);
  padding: 64px 5vw 32px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p {
  color: var(--silver);
  font-size: .9rem;
  font-weight: 300;
  line-height: 1.75;
  margin-top: .9rem;
}
.footer-brand img { height: 42px; width: auto; }
.footer-col h4 {
  font-family: 'Rajdhani', sans-serif;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--blue-light);
  margin-bottom: 1.1rem;
}
.footer-col a,
.footer-col p {
  display: block;
  color: var(--silver);
  font-size: .9rem;
  font-weight: 300;
  line-height: 1.85;
  transition: color .3s;
}
.footer-col a:hover { color: var(--blue-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.05);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p {
  color: rgba(255,255,255,.28);
  font-size: .78rem;
}
.footer-bottom a {
  color: rgba(255,255,255,.28);
  transition: color .3s;
}
.footer-bottom a:hover { color: var(--blue-light); }

/* ── FADE-UP ANIMATION ── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── CTA BAND ── */
.cta-band {
  padding: 80px 5vw;
  background: linear-gradient(135deg, var(--blue-dark), #0d3d5e);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 40px 40px;
}
.cta-band h2 {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(2rem,4vw,3.2rem);
  font-weight: 700;
  color: var(--white);
  margin-bottom: .8rem;
  position: relative;
}
.cta-band p {
  color: rgba(255,255,255,.7);
  font-weight: 300;
  font-size: 1.05rem;
  margin-bottom: 2.2rem;
  position: relative;
}
.cta-band .btn { position: relative; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
}
@media (max-width: 600px) {
  .section { padding: 64px 5vw; }
  .footer-grid { grid-template-columns: 1fr; }
}