/* ==========================================================================
   Responsive rules — mobile-first overrides
   Breakpoints: 1180px (laptop), 960px (tablet), 680px (mobile), 420px (small)
   ========================================================================== */

/* ---------- Laptop / small desktop ---------- */
@media (max-width: 1180px){
  .grid-5{ grid-template-columns: repeat(3, 1fr); }
  .grid-4{ grid-template-columns: repeat(3, 1fr); }
  .stats-grid{ grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .main-nav a{ padding: 9px 10px; font-size: 0.88rem; }
}

/* ---------- Tablet ---------- */
@media (max-width: 960px){
  section{ padding: 64px 0; }

  .main-nav{ display: none; }
  .hamburger{ display: flex; }

  .hero .container{ grid-template-columns: 1fr; }
  .hero-visual{ min-height: 300px; order: -1; }
  .hero-text > p{ max-width: 100%; }
  .hero-search{ max-width: 100%; }

  .grid-3, .grid-4, .grid-5{ grid-template-columns: repeat(2, 1fr); }
  .faq-grid, .contact-grid{ grid-template-columns: 1fr; }
  .testimonial-track{ grid-template-columns: 1fr; }

  .footer-grid{ grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-about{ grid-column: 1 / -1; }

  .timeline{ flex-direction: column; align-items: flex-start; gap: 28px; }
  .timeline::before{ display: none; }
  .timeline-step{ display: flex; align-items: center; gap: 14px; text-align: left; }
  .timeline-step .step-dot{ margin: 0; flex-shrink: 0; }

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

/* ---------- Mobile navigation drawer ---------- */
@media (max-width: 960px){
  .mobile-nav{
    position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0;
    background: var(--color-bg); z-index: 480; padding: 24px; overflow-y: auto;
    transform: translateX(100%); transition: transform var(--transition);
  }
  .mobile-nav.is-open{ transform: translateX(0); }
  .mobile-nav a{ display: block; padding: 16px 6px; font-size: 1.1rem; font-weight: 600; border-bottom: 1px solid var(--color-border); }
  .mobile-nav .btn{ margin-top: 20px; }
}
@media (min-width: 961px){
  .mobile-nav{ display: none; }
}

/* ---------- Mobile ---------- */
@media (max-width: 680px){
  .container{ padding: 0 18px; }
  h1{ font-size: 2.1rem; }
  h2{ font-size: 1.6rem; }

  .grid-2, .grid-3, .grid-4, .grid-5{ grid-template-columns: 1fr; }
  .stats-grid{ grid-template-columns: 1fr; gap: 18px; }
  .stats-section{ padding: 40px 0; min-height: auto; }
  .stat-number{ font-size: 1.9rem; }

  .hero-cta{ flex-direction: column; }
  .hero-cta .btn{ width: 100%; }
  .hero-search{ flex-direction: column; }
  .hero-search .btn{ width: 100%; }

  .floating-stack{ transform: scale(0.85); }
  .hero-visual{ display: none; }

  .footer-grid{ grid-template-columns: 1fr; }
  .footer-bottom{ flex-direction: column; text-align: center; }

  .newsletter-form{ flex-direction: column; }

  .quiz-demo{ padding: 22px; }
  .contact-form-card{ padding: 22px; }

  .testimonial-card{ padding: 26px 22px 22px; }
  .testimonial-card::before{ font-size: 2.6rem; top: 10px; right: 16px; }

  .progress-track{ grid-template-columns: 1fr; }

  .back-to-top{ right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

/* ---------- Small phones ---------- */
@media (max-width: 420px){
  .logo span{ font-size: 1.05rem; }
  .site-header .container{ gap: 10px; }
  .flip-scene{ height: 240px; }
  .newsletter-section{ padding: 32px 20px; }
}