/* ==============================
   ALTRIVA - Responsive Styles
   ============================== */

@media (max-width: 1024px) {
  .about-snippet { gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 992px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .research-content { grid-template-columns: 1fr; }
  .research-image { order: -1; height: 250px; }
  .contact-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-height: 70px; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    flex-direction: column;
    background: #FFFFFF;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    padding: 20px 30px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-links li a {
    display: block;
    padding: 12px 16px;
    font-size: 0.9rem;
  }

  .nav-links .cta-nav {
    margin-left: 0;
    margin-top: 8px;
    text-align: center;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: var(--accent-bg);
    border: none;
    border-radius: 8px;
    padding: 8px 0 8px 16px;
    margin-top: 4px;
    display: none;
    box-shadow: none;
  }

  .dropdown.open .dropdown-menu {
    display: block;
  }

  .hero { min-height: 90vh; }

  .hero-content h1 { font-size: clamp(2rem, 8vw, 3rem); }

  .hero-content p { font-size: 1rem; }

  .hero-buttons .btn { padding: 12px 24px; font-size: 0.85rem; }

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

  .stat-item:nth-child(odd) { border-left: none; }

  .stat-item .stat-number { font-size: 2rem; }

  .about-snippet { grid-template-columns: 1fr; gap: 30px; }

  .about-snippet-image { height: 250px; }

  .section { padding: 50px 0; }

  .footer-grid { grid-template-columns: 1fr; gap: 30px; }

  .page-header { padding: 120px 0 40px; }

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

  .pipeline-timeline { padding-left: 30px; }

  .pipeline-item::before { left: -23px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }

  .stat-item { border-left: none !important; }

  .hero { min-height: 85vh; }

  .hero-buttons { flex-direction: column; align-items: center; }

  .hero-buttons .btn { width: 100%; max-width: 280px; }

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

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

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

  .partner-logos { gap: 20px; }

  .partner-logo { font-size: 1rem; }
}