/* ============================
   SAVIS Labs – Responsive CSS
   ============================ */

/* ---- Large tablets / small desktops (≤1100px) ---- */
@media (max-width: 1100px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }
  .footer-brand { grid-column: 1 / -1; }

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

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

/* ---- Tablets (≤900px) ---- */
@media (max-width: 900px) {
  /* Hero */
  .hero-container { flex-direction: column; text-align: center; }
  .hero-content   { max-width: 100%; }
  .hero-actions   { justify-content: center; }
  .hero-subtitle  { margin-left: auto; margin-right: auto; }
  .hero-graphic   { display: none; }

  .section-title { font-size: 1.8rem; }

  /* Footer 2-col on tablet */
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .footer-brand    { grid-column: 1 / -1; }
  .footer-col:last-child { grid-column: 1 / -1; }

  /* Navbar */
  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: rgba(6,13,31,0.98);
    padding: 20px 24px 32px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    gap: 4px;
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-links a    { padding: 12px 16px; font-size: 1rem; }
  .hamburger      { display: flex; }
  .nav-cta        { display: none; }

  /* Swiper nav stays visible on tablet */
  .swiper-nav-btn { width: 38px; height: 38px; font-size: 0.8rem; }
}

/* ---- Mobile (≤640px) ---- */
@media (max-width: 640px) {
  .section-pad { padding: 60px 0; }

  /* Hero */
  .hero           { padding: 100px 0 70px; }
  .hero-title     { font-size: 2rem; }
  .hero-subtitle  { font-size: 0.95rem; }

  /* Sections */
  .services-grid { grid-template-columns: 1fr; }
  .why-grid      { grid-template-columns: 1fr; }
  .stats-grid    { grid-template-columns: repeat(2, 1fr); }

  .section-title  { font-size: 1.6rem; }
  .stat-item h2   { font-size: 2.2rem; }
  .cta-content h2 { font-size: 1.5rem; }

  /* Testimonials – hide nav buttons, use swipe + dots */
  .swiper-nav-btn         { display: none; }
  .testimonials-swiper    { padding-bottom: 44px !important; }

  /* ===== FOOTER – single column centered on mobile ===== */
  .footer { padding-top: 48px; }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 0;
    padding-bottom: 0;
    text-align: center;
  }

  /* Brand block */
  .footer-brand {
    grid-column: 1 / -1;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    margin-bottom: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .footer-brand p { max-width: 100%; }
  .social-links   { justify-content: center; }

  /* Each column */
  .footer-col {
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .footer-col:last-child {
    grid-column: 1 / -1;
    border-bottom: none;
    padding-bottom: 32px;
  }

  .footer-col h4 { margin-bottom: 14px; }
  .footer-col ul { display: flex; flex-direction: column; align-items: center; }
  .footer-col ul li { margin-bottom: 8px; }

  /* Contact list centered */
  .contact-list li {
    justify-content: center;
    word-break: break-all;
    font-size: 0.85rem;
  }

  /* Newsletter form centered */
  .newsletter-form { max-width: 320px; margin: 12px auto 0; }

  /* Footer bottom */
  .footer-bottom .container {
    flex-direction: column;
    gap: 6px;
    text-align: center;
    padding: 16px 24px;
  }
}

/* ---- Pages responsive ---- */
@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .about-split { grid-template-columns: 1fr; }
  .product-card,
  .product-card:nth-child(even) { grid-template-columns: 1fr; direction: ltr; }
  .product-visual { padding: 40px; font-size: 3.5rem; border-right: none !important; border-left: none !important; border-bottom: 1px solid var(--border); }
  .product-info { padding: 32px 24px; }
}

@media (max-width: 700px) {
  .process-steps { flex-direction: column; gap: 24px; }
  .process-steps::before { display: none; }
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 28px 20px; }
  .about-visual { padding: 30px 20px; }
}

@media (max-width: 500px) {
  .cs-grid { grid-template-columns: 1fr; }
}

/* ---- Small phones (≤400px) ---- */
@media (max-width: 400px) {
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stat-item h2 { font-size: 1.9rem; }

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