.section {
  padding: 5rem 0;
  position: relative;
}

/* Barevné odlišení sekcí */
#services {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(236, 72, 153, 0.05) 100%);
  border-top: 1px solid rgba(139, 92, 246, 0.1);
  border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

#projects {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.05) 0%, rgba(245, 158, 11, 0.05) 100%);
  border-top: 1px solid rgba(236, 72, 153, 0.1);
  border-bottom: 1px solid rgba(236, 72, 153, 0.1);
}

#tech-stack {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
  border-top: 1px solid rgba(245, 158, 11, 0.1);
  border-bottom: 1px solid rgba(245, 158, 11, 0.1);
}

#certifications {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(99, 102, 241, 0.08) 100%);
  border-top: 1px solid rgba(16, 185, 129, 0.15);
  border-bottom: 1px solid rgba(16, 185, 129, 0.15);
}

#education {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
  border-top: 1px solid rgba(99, 102, 241, 0.1);
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

#contact {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(99, 102, 241, 0.05) 100%);
  border-top: 1px solid rgba(16, 185, 129, 0.1);
  border-bottom: 1px solid rgba(16, 185, 129, 0.1);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: #ffffff;
  text-align: center;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: #c7d2fe;
  text-align: center;
  margin-bottom: 3rem;
  font-weight: 300;
  opacity: 0.9;
}


/* Offset for fixed navigation */
#services,
#projects,
#tech-stack,
#certifications,
#education,
#contact {
  scroll-margin-top: 80px;
}

@media (max-width: 768px) {
  .section {
    padding: 3rem 0;
  }
  
  .container {
    padding: 0 1rem;
  }
}