/* ============================================
   Tongtrailer Responsive Styles
   Breakpoints: Desktop ≥1200px, Tablet 768-1199px, Mobile <768px
   ============================================ */

/* ====== TABLET (768px - 1199px) ====== */
@media (min-width: 769px) and (max-width: 1199px) {
  .container { padding: 0 24px; }

  /* Hero */
  .hero .container { flex-direction: column; text-align: center; }
  .hero-content { max-width: 100%; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-image { max-width: 500px; margin: 0 auto; }

  /* Grids */
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .post-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .blog-grid .blog-card:first-child { grid-column: span 2; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .catalog-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }

  /* Layout */
  .main-layout { flex-direction: column; }
  .main-layout .sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; gap: 16px; }
  .main-layout .sidebar .sidebar-block { flex: 1; min-width: 250px; }
  .content-area { width: 100%; }

  .article-layout { flex-direction: column; }
  .article-layout .sidebar { width: 100%; }
  .article-main { width: 100%; }

  .blog-layout { flex-direction: column; }
  .blog-layout .sidebar { width: 100%; }
  .blog-layout .content-area { width: 100%; }

  /* Product detail */
  .product-top { flex-direction: column; }
  .product-gallery, .product-info { width: 100%; }

  /* Footer */
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: span 2; }
}

/* ====== MOBILE (<768px) ====== */
@media (max-width: 767px) {
  .container { padding: 0 16px; }

  /* Top bar */
  .topbar { display: none; }

  /* Header */
  .header .container { padding: 0 16px; }
  .logo-img { height: 36px; max-width: 160px; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }

  .nav-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    z-index: 999;
    overflow-y: auto;
  }
  .nav-menu.mobile-active { display: flex; }
  .nav-menu a {
    padding: 14px 0;
    font-size: 16px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
  }
  .nav-menu a.active { color: var(--yellow); }

  /* Hero */
  .hero { padding: 60px 0 40px; min-height: auto; }
  .hero .container { flex-direction: column; text-align: center; }
  .hero h1 { font-size: 26px; line-height: 1.3; }
  .hero p { font-size: 14px; }
  .hero-buttons { flex-direction: column; gap: 12px; }
  .hero-buttons a { width: 100%; text-align: center; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .hero-stat-item { flex: 1; min-width: 100px; }
  .hero-image { display: none; }
  .hero-image-badges { display: none; }

  /* Section titles */
  .section-title { font-size: 24px; }
  .section-subtitle { font-size: 14px; }

  /* Grids — product 2-col, blog 1-col */
  .category-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .advantages-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .post-grid { grid-template-columns: 1fr; gap: 16px; }
  .blog-grid { grid-template-columns: 1fr; gap: 16px; }
  .blog-grid .blog-card:first-child { grid-column: span 1; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .values-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .catalog-grid { grid-template-columns: 1fr; }

  /* Product cards — compact on mobile */
  .product-card:hover { transform: none; }
  .product-card:hover .product-img { transform: none; }
  .product-img::after { display: none; }
  .product-info { padding: 12px; }
  .product-info h3 { font-size: 14px; margin-bottom: 6px; }
  .product-desc { font-size: 12px; margin-bottom: 8px; line-height: 1.4; }
  .product-specs { gap: 6px; }
  .spec-item { font-size: 11px; }
  .product-tag { font-size: 10px; padding: 2px 8px; margin-bottom: 6px; }

  /* Blog cards */
  .blog-card:hover { transform: none; }
  .blog-card:hover .blog-img { transform: none; }
  .blog-body { padding: 16px; }
  .blog-body h3 { font-size: 16px; margin-bottom: 8px; }
  .blog-body p { font-size: 13px; line-height: 1.6; margin-bottom: 12px; }
  .blog-meta { gap: 8px; margin-bottom: 8px; }
  .blog-card.featured .blog-body h3 { font-size: 18px; }

  /* Featured post (blog page) — stack vertically */
  .featured-post-inner { flex-direction: column; min-height: auto; }
  .featured-post-img { width: 100%; aspect-ratio: 16/9; }
  .featured-post-body { padding: 20px; }
  .featured-post-body h2 { font-size: 20px; }
  .featured-post:hover { transform: none; }

  /* Sidebar — collapsible on mobile */
  .main-layout,
  .blog-layout {
    flex-direction: column;
    gap: 20px;
    padding: 20px 0;
  }
  .main-layout .sidebar,
  .blog-layout .sidebar {
    width: 100%;
    flex-direction: column;
    order: 2;
  }
  .main-layout .sidebar .sidebar-block,
  .blog-layout .sidebar .sidebar-block {
    min-width: 100%;
  }
  .main-layout .content-area,
  .blog-layout .content-area {
    width: 100%;
    order: 1;
  }

  /* Toolbar — stack on mobile */
  .toolbar {
    flex-wrap: wrap;
    gap: 8px;
    padding: 10px 12px;
  }
  .toolbar-left { font-size: 12px; flex: 1; }
  .toolbar-right { width: 100%; }
  .sort-select { width: 100%; padding: 10px 12px; font-size: 14px; }

  /* Category tabs — horizontal scroll */
  .category-tabs .container {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }
  .category-tabs .container::-webkit-scrollbar { display: none; }
  .cat-tab { white-space: nowrap; flex-shrink: 0; }

  /* Sidebar blocks — tighter */
  .sidebar-block { margin-bottom: 12px; }
  .sidebar-title { padding: 10px 16px; font-size: 12px; }
  .sidebar-category-list a { padding: 10px 16px; font-size: 13px; }
  .sidebar-contact { padding: 16px; }
  .sidebar-contact h4 { font-size: 15px; }
  .sidebar-popular .popular-item { padding: 8px 16px; }

  /* Load more */
  .load-more-wrap, .load-more { text-align: center; padding: 16px 0; }
  .load-more-wrap .btn-outline,
  .load-more .btn-outline { width: 100%; padding: 14px; font-size: 15px; }

  /* Page content */
  .article-layout { flex-direction: column; }
  .article-layout .sidebar { width: 100%; }
  .article-main { width: 100%; }
  .article-header h1 { font-size: 24px; }

  /* Product detail */
  .product-tabs .tab-nav { flex-wrap: wrap; }
  .product-tabs .tab-nav button { flex: 1; min-width: 0; font-size: 13px; padding: 10px 8px; }
  .quick-specs { flex-direction: column; }
  .product-actions { flex-direction: column; }
  .product-actions a, .product-actions button { width: 100%; text-align: center; }

  /* Forms - contact */
  .contact-section { overflow: hidden; }
  .contact-section::before { display: none; }
  .contact-section h2 { font-size: 22px; padding: 0 16px; }
  .contact-section > .container > p { font-size: 14px; padding: 0 16px; }
  .contact-form { grid-template-columns: 1fr; gap: 12px; max-width: 100%; padding: 0; }
  .contact-form .form-group { min-width: 0; }
  .contact-form .form-group.full { grid-column: span 1; }
  .contact-form .form-submit { grid-column: span 1; }
  .contact-form .form-submit .btn-primary { width: 100%; padding: 14px 24px; }
  .form-group input, .form-group select, .form-group textarea { padding: 12px 14px; font-size: 15px; width: 100%; min-width: 0; box-sizing: border-box; }

  /* Blog article */
  .article-meta-bar { flex-wrap: wrap; gap: 8px; }

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

  /* 404 */
  .error-code { font-size: 80px; }
  .error-actions { flex-direction: column; }
  .error-actions a { width: 100%; text-align: center; }

  /* Modal */
  .modal { margin: 16px; max-height: 90vh; overflow-y: auto; }

  /* Global reach */
  .region-tags { justify-content: center; }

  /* Breadcrumb */
  nav.breadcrumb { font-size: 12px; }

  /* Page hero */
  .page-hero { padding: 40px 0 20px; }
  .page-hero h1 { font-size: 22px; }
  .page-hero p { font-size: 14px; }

  /* Bottom CTA */
  .bottom-cta .container { flex-direction: column; text-align: center; gap: 20px; }
  .bottom-cta-text h2 { font-size: 22px; }
  .bottom-cta .btn-primary { width: 100%; text-align: center; }

  /* WhatsApp float */
  .whatsapp-float { bottom: 16px; right: 16px; width: 50px; height: 50px; }

  /* Back to top */
  .back-to-top { bottom: 80px; right: 16px; }
}

/* ====== SMALL MOBILE (<480px) ====== */
@media (max-width: 479px) {
  .logo-img { height: 30px; max-width: 130px; }
  .footer-brand .logo-img { height: 32px; max-width: 140px; }
  .category-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; align-items: center; }
  .hero-stat-item { width: 100%; text-align: center; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }
  .testimonial-card { padding: 20px; }

  /* Product grid: 1-col on small mobile */
  .products-grid { grid-template-columns: 1fr; gap: 12px; }
  .product-grid { grid-template-columns: 1fr; gap: 12px; }
  .catalog-grid { grid-template-columns: 1fr; gap: 12px; }
  .related-grid { grid-template-columns: 1fr; gap: 12px; }

  /* Extra compact product cards */
  .product-info { padding: 10px; }
  .product-info h3 { font-size: 13px; }
  .product-desc { display: none; }
  .product-specs { gap: 4px; }
  .spec-item { font-size: 10px; }

  /* Contact form */
  .contact-section { padding: 40px 0; }
  .contact-section h2 { font-size: 20px; padding: 0 12px; }
  .contact-form { gap: 10px; padding: 0; }
  .form-group input, .form-group select, .form-group textarea { padding: 10px 12px; font-size: 14px; }
  .contact-form .form-submit .btn-primary { padding: 12px 20px; font-size: 14px; }

  /* Featured post */
  .featured-post-body h2 { font-size: 18px; }
  .featured-post-body p { font-size: 13px; }

  /* Page hero */
  .page-hero { padding: 30px 0 16px; }
  .page-hero h1 { font-size: 20px; }
}

/* ====== REDUCED MOTION ====== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}