/* ================================================
   ITperf Consulting — Responsive
   ================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .stats-bar-inner { grid-template-columns: repeat(3, 1fr); }
  .diff-grid { grid-template-columns: 1fr; gap: 24px; }
  .expertise-inner { grid-template-columns: 1fr; }
  .expertise-card { position: static; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-info-card { position: static; }
  .footer-container { grid-template-columns: 1fr; gap: 40px; }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  /* Nav */
  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px;
    width: 40px; height: 40px; align-items: center; justify-content: center;
    margin-left: auto; z-index: 200;
  }
  .nav-toggle span {
    display: block; width: 22px; height: 2px;
    background: currentColor; border-radius: 2px;
    transition: all var(--transition);
  }
  .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
  .site-header.scrolled .nav-toggle { color: var(--dark); }
  .site-header.hero-mode .nav-toggle { color: white; }

  .nav-menu {
    position: fixed; top: 0; right: -100%; bottom: 0; width: min(320px, 100vw);
    background: white; flex-direction: column; align-items: flex-start;
    padding: calc(var(--nav-h) + 24px) 24px 32px;
    gap: 4px; box-shadow: var(--shadow-lg);
    transition: right var(--transition); z-index: 100;
    overflow-y: auto;
  }
  .nav-menu.open { right: 0; }
  .nav-link { width: 100%; color: var(--dark) !important; }
  .nav-divider { width: 100%; height: 1px; background: var(--light); margin: 8px 0; }
  .nav-cta { width: 100%; justify-content: center; }
  .site-header.hero-mode .nav-toggle { color: white; }

  /* Hero */
  .hero { padding-bottom: 60px; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { justify-content: center; }

  /* Stats */
  .stats-bar-inner { grid-template-columns: repeat(3, 1fr); }
  .stat-item { padding: 20px 12px; }
  .stat-value { font-size: 1.8rem; }
  .stat-label { font-size: 11px; }

  /* Services grid */
  .services-grid { grid-template-columns: 1fr; }

  /* Service detail */
  .service-detail-inner { grid-template-columns: 1fr; gap: 32px; }

  /* Expertise */
  .usecase-grid { grid-template-columns: 1fr; }

  /* About */
  .values-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }

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

  /* Footer */
  .footer-nav { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
  .stats-bar-inner { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid var(--light); }
  .stat-item:last-child { border-bottom: none; }
  .section { padding: 64px 0; }
  .footer-nav { grid-template-columns: 1fr; }
}