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

:root {
  --primarna: #06b6d4;
  --primarna-hover: #0891b2;
  --pozadina: #0f172a;
  --tekst: #ffffff;
  --tekst-svijetlo: #94a3b8;
  --radijus: 12px;
  --tranzicija: 0.3s ease;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--tekst);
  background-color: var(--pozadina);
  line-height: 1.6;
}


.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem 2rem;
  background-color: var(--pozadina);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primarna);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--tekst);
  font-weight: 500;
  position: relative;
  padding-bottom: 4px;
  transition: color var(--tranzicija);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primarna);
  transition: width var(--tranzicija);
}

.nav-links a:hover { color: var(--primarna); }
.nav-links a:hover::after { width: 100%; }


.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-sadrzaj {
  flex: 1 1 400px;
  max-width: 560px;
}

.hero-sadrzaj h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.2rem;
}

.hero-sadrzaj p {
  font-size: 1.1rem;
  color: var(--tekst-svijetlo);
  margin-bottom: 2rem;
}

.gumb {
  display: inline-block;
  padding: 0.85rem 2rem;
  background-color: var(--primarna);
  color: #ffffff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: background-color var(--tranzicija), transform var(--tranzicija);
}

.gumb:hover {
  background-color: var(--primarna-hover);
  transform: scale(1.06);
}


.hero-slika {
  flex: 1 1 300px;
  text-align: center;
}

.hero-slika img {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radijus);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
  transition: transform 0.6s ease;
}

.hero-slika img:hover {
  transform: translateY(-20px) rotate(2deg);
}

/* =============================
   SEKCIJA USLUGA
   ============================= */
.usluge {
  background-color: #f5f3ff;
  padding: 5rem 2rem;
  text-align: center;
}

.usluge h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 3rem;
  color: #000000;
}

.usluge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.kartica {
  background-color: #ffffff;
  border-radius: var(--radijus);
  padding: 1.5rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  text-align: left;
  transition: transform var(--tranzicija), box-shadow var(--tranzicija);
}

.kartica:hover {
  transform: translateY(-10px) scale(1.05);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.15);
}

.kartica img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.kartica h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: #111827;
}

.kartica p {
  font-size: 0.92rem;
  color: #6b7280;
  line-height: 1.6;
}

.kartica-3d:hover {
  transform: translateY(-10px) scale(1.05) rotateY(10deg);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.15);
}

/* =============================
   FOOTER
   ============================= */
.footer {
  background-color: var(--pozadina);
  color: var(--tekst-svijetlo);
  text-align: center;
  padding: 1.8rem 2rem;
  font-size: 0.9rem;
}

/* =============================
   RESPONZIVNOST
   ============================= */
@media (max-width: 768px) {
  .nav { flex-direction: column; align-items: flex-start; }

  .hero {
    flex-direction: column;
    padding: 3rem 1.5rem;
    text-align: center;
  }

  .hero-sadrzaj { max-width: 100%; }
  .hero-sadrzaj h1 { font-size: 2rem; }
  .usluge-grid { grid-template-columns: 1fr; }
}