/* ============================================
   RESPONSIVE — Mobile & Tablet Breakpoints
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .case-study {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
  }
}

/* Mobile */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .hero__title {
    font-size: var(--text-4xl);
  }

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

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }

  .cta-section__actions {
    flex-direction: column;
  }

  .section-title {
    font-size: var(--text-2xl);
  }

  .page-hero__title {
    font-size: var(--text-3xl);
  }

  /* Experience timeline mobile */
  .timeline {
    padding-left: var(--space-xl);
  }

  .timeline__item {
    padding-left: var(--space-xl);
  }
}

/* Small mobile */
@media (max-width: 480px) {
  :root {
    --gutter: 1.25rem;
  }

  .hero {
    min-height: 90vh;
  }

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

  .card {
    padding: var(--space-xl);
  }

  .service-card {
    padding: var(--space-xl);
  }
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: var(--space-3xl);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(
    to bottom,
    var(--color-accent),
    var(--color-border),
    transparent
  );
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-3xl);
  padding-left: var(--space-xl);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-3xl) - 3px);
  top: 6px;
  width: 7px;
  height: 7px;
  background: var(--color-accent);
  border-radius: 50%;
}

.timeline__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.timeline__role {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-xs);
}

.timeline__company {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.timeline__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* Approach grid */
.approach-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .approach-grid {
    grid-template-columns: 1fr;
  }
}

/* Values list */
.values-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.values-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

.values-list__item::before {
  content: "◆";
  color: var(--color-accent);
  font-size: var(--text-xs);
  margin-top: 5px;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .values-list {
    grid-template-columns: 1fr;
  }
}