.display-heading {
  font-family: 'Bebas Neue', 'Inter', sans-serif;
  font-size: clamp(3rem, 8vw, 5rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

#intro {
  text-align: center;
  padding: 6rem 2rem 3rem;
  max-width: 700px;
  margin: 0 auto;
}

.intro-text {
  font-size: 1.1rem;
  line-height: 1.7;
  opacity: 0.8;
}

.intro-certs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.cert-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--color-accent-light);
}

#skills {
  padding: 3rem 2rem;
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  max-width: 800px;
  margin: 0 auto;
}

@media (min-width: 600px) {
  .skills-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.skill-card {
  background: linear-gradient(135deg, rgba(30, 30, 30, 0.6), rgba(17, 17, 17, 0.8));
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 1.75rem;
  transition: all 0.3s ease;
}

.skill-card:hover {
  border-color: rgba(16, 185, 129, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.skill-card:hover .skill-icon {
  background: rgba(16, 185, 129, 0.12);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.15);
}

.skill-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.15);
  border-radius: 10px;
  margin-bottom: 1rem;
  color: var(--color-accent);
  transition: all 0.3s ease;
}

.skill-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.skill-card p {
  font-size: 0.85rem;
  opacity: 0.55;
  line-height: 1.5;
  margin-bottom: 0;
}

#clients {
  padding: 3rem 2rem;
  text-align: center;
}

.clients-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #555;
  margin-bottom: 1.5rem;
}

.clients-strip {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem 3rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: #555;
}

#contact {
  text-align: center;
  padding: 4rem 2rem;
}

#contact h2 {
  font-family: 'Bebas Neue', 'Inter', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.contact-sub {
  opacity: 0.6;
  margin-bottom: 2rem;
}

.linkedin-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  color: #0077b5;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: opacity 0.2s ease;
}

.linkedin-link:hover {
  opacity: 0.7;
}

.success-message {
  color: var(--color-success);
}

.error-message {
  color: var(--color-error);
}

footer {
  padding: 3rem 2rem 2rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--color-text-heading);
}

.footer-tagline {
  font-size: 0.9rem;
  opacity: 0.5;
  margin-top: 0.5rem;
}

.footer-copy {
  font-size: 0.75rem;
  opacity: 0.4;
}

@media (max-width: 480px) {
  #intro {
    padding: 5rem 1.5rem 2.5rem;
  }

  #skills,
  #clients,
  #contact {
    padding: 2.5rem 1.5rem;
  }
}