@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-3rem);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(3rem);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(3rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

/* === RESPONSIVIDADE === */
@media screen and (max-width: 992px) {
  html {
    font-size: 56.25%; /* 1rem = 9px */
  }
  
  #header,
  .about {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 4rem;
  }
  
  .header__left h1 {
    font-size: 3.6rem;
  }
  
  .secondary-title::after,
  .tertiary-title::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .about__left ul {
    justify-content: center;
  }
}

@media screen and (max-width: 576px) {
  .header__left h1 {
    font-size: 3.2rem;
  }
  
  .skills__content ul {
    grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
    gap: 2rem;
  }
  
  .image-container {
    height: 10rem;
    width: 10rem;
  }
  
  .footer__content ul {
    gap: 2rem;
  }

  .project-actions {
    flex-direction: column;
    gap: 1rem;
  }
}