/* === Animación fade-up para cada sección === */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Tech badges personalizados === */
.tech-badge {
  background: rgba(59, 130, 246, 0.15);
  color: #2563EB;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  display: inline-block;
  margin: 0.25rem;
  transition: transform 0.2s ease;
}

.tech-badge:hover {
  transform: scale(1.1);
  background: rgba(59, 130, 246, 0.25);
}

/* === Link con ícono animado === */
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #2563EB;
  font-weight: 600;
  transition: transform 0.3s ease;
}

.contact-link:hover {
  transform: translateX(4px);
}

/* === Sección títulos con línea decorativa === */
h2.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  position: relative;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

h2.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 3px;
  background-color: #3b82f6;
}

/* === Animaciones de entrada por scroll === */
section > div {
  will-change: opacity, transform;
}

/* fade-slide desde abajo */
.fade-slide {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-slide.visible {
  opacity: 1;
  transform: translateY(0);
}