/* Mobile First — base styles are mobile by default */

@media (min-width: 480px) {
  .container {
    padding: 0 var(--space-xl);
  }
}

@media (max-width: 479px) {
  .contact__channels {
    grid-template-columns: 1fr;
  }

  .about__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .about__journey-item {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }
}

@media (min-width: 768px) {
  .hero__name {
    font-size: 3rem;
  }

  .navbar__hamburger {
    display: none;
  }

  .navbar__links {
    display: flex;
  }
}

@media (max-width: 767px) {
  .navbar__hamburger {
    display: flex;
  }

  .navbar__links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-nav-bg);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
  }

  .navbar__links--open {
    display: flex;
  }

  .navbar__links li {
    padding: var(--space-sm) 0;
  }

  .hero__name {
    font-size: 2.2rem;
  }

  .hero__tagline {
    font-size: 1rem;
  }

  .section__title {
    font-size: 1.5rem;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .contact__channels {
    grid-template-columns: 1fr 1fr;
  }

  .contact__grid {
    grid-template-columns: 1fr;
  }

  .projects__grid {
    grid-template-columns: 1fr;
  }

  .what-i-do {
    grid-template-columns: 1fr;
  }

  .about__intro {
    grid-template-columns: 1fr;
  }

  .about__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .about__journey-item {
    grid-template-columns: 120px 1fr;
  }

  .exp-highlights {
    grid-template-columns: repeat(2, 1fr);
  }

  .view-toggle {
    width: 100%;
  }

  .view-toggle__btn {
    flex: 1;
    text-align: center;
    padding: var(--space-sm) var(--space-sm);
    font-size: 0.85rem;
  }

  .timeline__header {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .timeline__period {
    white-space: normal;
  }

  .acad-card__header {
    flex-direction: column;
  }

  .acad-card__meta {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .acad-card__dissertation {
    margin-left: calc(-1 * var(--space-lg));
    margin-right: calc(-1 * var(--space-lg));
    margin-bottom: calc(-1 * var(--space-lg));
    padding: var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .hero__name {
    font-size: 4rem;
  }

  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--space-2xl);
  }
}