/* ============================================================
   RESPONSIVE — TABLET (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {

  /* Hero */
  .hero__content {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }

  .hero__body {
    max-width: 100%;
  }

  .hero__cta {
    justify-content: center;
  }

  /* Stats */
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 2rem 1.5rem;
  }

  /* Courses & Research grids */
  .courses-grid,
  .courses-grid--two,
  .research-grid {
    grid-template-columns: 1fr;
  }

  /* Kampagnen-Flow */
  .flow-wrap { padding: 1.5rem; }
  .flow-steps { gap: 0.25rem; }
  .flow-step { min-width: 60px; }
  .flow-step__label { font-size: 0.65rem; }

  /* Kooperation */
  .schwerpunkt-grid {
    grid-template-columns: 1fr;
  }

  .coop-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .coop-focus-box {
    max-width: 100%;
  }

  /* Kontakt cards */
  .kontakt__cards {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  /* Form */
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 600px)
   ============================================================ */
@media (max-width: 600px) {

  /* Nav */
  .nav {
    padding: 0 1rem;
  }

  .nav__links {
    display: none;
  }

  /* Hero */
  .hero {
    padding: calc(var(--nav-height) + 2rem) 1.25rem 3rem;
  }

  .hero__photo,
  .hero__photo-placeholder {
    width: 160px;
    height: 160px;
    font-size: 2.2rem;
  }

  /* Stats */
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding: 1.75rem 1rem;
  }

  .stats__number {
    font-size: 1.1rem;
  }

  /* Sections */
  .section {
    padding: 3.5rem 1.25rem;
  }

  /* Timeline */
  .timeline {
    padding-left: 1.75rem;
  }

  .timeline__dot {
    left: -28.5px;
  }

  /* Tabs */
  .tab-btn {
    font-size: 0.9rem;
    padding: 0.65rem 1.1rem;
  }

  /* Kontakt */
  .kontakt__cards {
    max-width: 100%;
  }

  /* Contact form */
  .contact-form-wrap {
    padding: 1.5rem;
  }

  /* Footer */
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================================
   VERY SMALL (≤ 380px)
   ============================================================ */
@media (max-width: 380px) {
  .hero__cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}