@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .hero-text {
    text-align: left;
  }

  .hero-text .subtitle,
  .hero-text .title {
    text-align: center;
  }

  .profile-photo {
    width: 240px;
    height: 240px;
    max-width: 80vw;
    margin: 0 auto;
  }

  .description {
    margin-left: 0;
    margin-right: 0;
    max-width: 100%;
    text-align: justify;
    text-justify: inter-word;
    hyphens: auto;
    -webkit-hyphens: auto;
  }

  .button-group {
    justify-content: flex-start;
  }

  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: min(75vw, 320px);
    height: 100vh;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-lg);
    background: rgba(10, 25, 47, 0.98);
    backdrop-filter: blur(12px);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -10px 0 30px rgba(2, 12, 27, 0.7);
  }

  .nav-menu.is-open {
    transform: translateX(0);
  }

  .nav-menu .nav-link a {
    font-size: var(--fs-md);
  }

  .nav-cta {
    margin-top: var(--space-sm);
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 8rem 5% 4rem;
  }

  .education,
  .about,
  .skills,
  .experience,
  .projects,
  .contact {
    padding: 4rem 5%;
  }

  .skill-card {
    min-height: auto;
    padding: var(--space-md);
  }

  .education-card,
  .experience-card {
    padding: var(--space-md);
  }
}

@media (max-width: 400px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }

  .button-group {
    flex-direction: column;
    width: 100%;
  }

  .cta-button {
    justify-content: center;
    width: 100%;
  }
}