/* ============================================================
   Dreamit Technology Ltd — Responsive Stylesheet
   responsive.css: tablet (768px) and mobile (480px) breakpoints
   ============================================================ */

/* ===== TABLET (≤ 1024px) ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  .footer-brand { grid-column: 1 / -1; }

  .services-grid { grid-template-columns: 1fr; max-width: 580px; margin: 0 auto; }
  .services-detail-grid { grid-template-columns: repeat(2, 1fr); }
  .tiers-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .values-grid { grid-template-columns: repeat(3, 1fr); }
  .credentials-grid { grid-template-columns: repeat(2, 1fr); }
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .why-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .featured-article { grid-template-columns: 1fr; }
  .featured-article .img-placeholder { min-height: 200px; }
}

/* ===== TABLET PORTRAIT (≤ 900px) ===== */
@media (max-width: 900px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .articles-grid { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
  .industries-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ===== TABLET (≤ 768px) ===== */
@media (max-width: 768px) {
  :root {
    --space-xxl: 4rem;
    --space-xl:  2.5rem;
    --space-lg:  2rem;
  }

  /* Navigation */
  .nav-cta { display: none; }
  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--navy);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem 2rem;
    gap: 0.25rem;
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    overflow-y: auto;
    box-shadow: -8px 0 40px rgba(0,0,0,0.3);
  }
  .nav-links.open { right: 0; }
  .nav-links > li { width: 100%; }
  .nav-links > li > a {
    display: block;
    padding: 0.85rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
  }

  /* Mobile dropdown */
  .dropdown-menu {
    position: static;
    transform: none !important;
    box-shadow: none;
    background: rgba(255,255,255,0.07);
    border-radius: var(--radius-md);
    max-height: 0;
    padding: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-dropdown.open .dropdown-menu {
    max-height: 300px;
    padding: 0.5rem 0;
  }
  .dropdown-menu li a {
    color: rgba(255,255,255,0.8);
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
  }
  .dropdown-menu li a:hover {
    background: rgba(255,255,255,0.08);
    color: white;
  }
  .nav-dropdown .dropdown-toggle { cursor: pointer; }

  /* Mobile menu overlay */
  .menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  .menu-overlay.active { opacity: 1; visibility: visible; }

  /* Mobile CTA in nav */
  .nav-links .mobile-cta {
    display: block;
    margin-top: 1rem;
    width: 100%;
  }
  .nav-links .mobile-cta a {
    display: block;
    background: var(--green);
    color: white;
    text-align: center;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
  }

  /* Typography scale-down */
  h1 { font-size: clamp(1.8rem, 6vw, 2.5rem); }
  h2 { font-size: clamp(1.5rem, 5vw, 2rem); }
  .hero h1 { font-size: clamp(2rem, 7vw, 2.8rem); }

  /* Hero */
  .hero { padding: 7rem 0 4rem; }
  .hero-cta-group { flex-direction: column; align-items: flex-start; }
  .hero-cta-group .btn { width: 100%; max-width: 320px; text-align: center; }

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

  /* Grids */
  .services-grid { grid-template-columns: 1fr; }
  .services-detail-grid { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .credentials-grid { grid-template-columns: 1fr; }
  .downloads-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; gap: 2rem; }

  /* Process timeline */
  .process-timeline { flex-direction: column; align-items: center; }
  .process-connector {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--green), var(--navy-mid));
  }
  .process-step { min-width: unset; max-width: 400px; width: 100%; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-brand { grid-column: auto; }
  .newsletter-inner { flex-direction: column; gap: 1.5rem; }
  .newsletter-form { width: 100%; }
  .newsletter-form input { min-width: unset; width: 100%; }

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

  /* CTA */
  .cta-actions { flex-direction: column; align-items: center; }
  .cta-actions .btn { width: 100%; max-width: 320px; }

  /* Section spacing */
  .section { padding: var(--space-xxl) 0; }
  .section-header { margin-bottom: var(--space-md); }

  /* Footer bottom */
  .footer-bottom .container { flex-direction: column; text-align: center; }
}

/* ===== MOBILE (≤ 480px) ===== */
@media (max-width: 480px) {
  :root {
    --space-xxl: 3rem;
    --space-xl:  2rem;
  }

  .container { padding: 0 1rem; }

  .hero { padding: 6rem 0 3rem; }
  .hero h1 { font-size: clamp(1.8rem, 8vw, 2.2rem); }
  .hero-sub { font-size: 1rem; }
  .hero-badges { display: none; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 0.75rem; }
  .stat-number { font-size: 1.8rem; }

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

  .page-hero { padding: 7rem 0 4rem; }
  .page-hero h1 { font-size: clamp(1.7rem, 7vw, 2.2rem); }

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

  .featured-article { grid-template-columns: 1fr; }
  .featured-article-body { padding: 1.75rem; }

  .filter-tabs { gap: 0.4rem; }
  .filter-btn { padding: 0.4rem 0.9rem; font-size: 0.82rem; }

  .download-card { flex-direction: column; }
  .download-card .download-icon { width: 44px; height: 44px; }

  .team-credentials { gap: 0.4rem; }

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

  .whatsapp-float { bottom: 80px; right: 16px; width: 50px; height: 50px; }
  .back-to-top { bottom: 20px; right: 16px; width: 40px; height: 40px; font-size: 1rem; }
}

/* ===== PRINT ===== */
@media print {
  .site-header, .site-footer, .whatsapp-float, .back-to-top, .nav-cta { display: none; }
  body { font-size: 12pt; color: #000; }
  h1, h2, h3, h4 { color: #000; }
  a { color: #000; text-decoration: underline; }
  .hero, .cta-banner { background: #f8f8f8 !important; color: #000 !important; }
  .hero h1, .hero-sub, .cta-inner h2, .cta-inner p { color: #000 !important; }
}