/* ======================== RESPONSIVE STYLES ======================== */

/* Large desktops */
@media (max-width: 1200px) {
  .container { padding: 0 24px; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; }
  .footer-grid .footer-brand { grid-column: 1 / -1; }
  .footer-grid .footer-brand .footer-brand-desc { max-width: 480px; }
  .stats-grid { gap: 16px; }
}

/* Tablets */
@media (max-width: 1024px) {
  .page-layout { grid-template-columns: 240px 1fr; gap: 28px; }
  .product-detail-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .featured-banner { grid-template-columns: 1fr; }
  .featured-banner-img { height: 240px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid .footer-brand { grid-column: 1 / -1; }
  .hero-content h1 { font-size: 2.2rem; }
}

/* Tablets portrait */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; display: none; }
  .sidebar.mobile-open { display: block; }
  .filter-toggle-btn { display: flex; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 56px 0; }
  .categories-grid { grid-template-columns: repeat(3, 1fr); }
  .nav-inner { display: none; }
  .nav-inner.mobile-open { display: flex; flex-direction: column; background: var(--white); border-top: 1px solid var(--border-color); }
  .nav-link { padding: 14px 20px; border-bottom: 1px solid var(--border-light); }
  .nav-dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; border-radius: 0; padding: 0; padding-left: 16px; background: var(--light-gray); }
  .mobile-menu-toggle { display: flex; }
  .announcement-bar .ann-extra { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .newsletter-inner { flex-direction: column; align-items: flex-start; gap: 24px; }
}

/* Small tablets / large phones */
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .hero-section { min-height: 460px; }
  .hero-content { min-height: 460px; padding: 60px 0; }
  .hero-content h1 { font-size: 1.75rem; }
  .hero-actions { flex-direction: column; gap: 12px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .header-search { display: none; }
  .header-inner { gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-legal-links { justify-content: center; }
  .tab-nav { flex-wrap: nowrap; overflow-x: auto; }
  .product-detail-title { font-size: 1.4rem; }
  .featured-banner-content { padding: 32px 24px; }
  .spec-table { font-size: 0.8rem; }
  .spec-table td, .spec-table th { padding: 10px 12px; }
  .section { padding: 40px 0; }
  .section-header { margin-bottom: 32px; }
  .page-hero { padding: 36px 0 28px; }
}

/* Filter toggle for mobile */
.filter-toggle-btn {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--white);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.filter-toggle-btn:hover { border-color: var(--midnight-blue); color: var(--midnight-blue); }

/* Search page */
.search-results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.search-result-item {
  background: var(--white);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: var(--transition);
}
.search-result-item:hover { border-color: var(--midnight-blue); box-shadow: var(--shadow-md); }
.search-result-thumb { width: 120px; height: 90px; border-radius: var(--radius-md); overflow: hidden; flex-shrink: 0; background: var(--light-gray); }
.search-result-thumb img { width: 100%; height: 100%; object-fit: cover; }
.search-result-info { flex: 1; }
.search-result-type { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--copper); margin-bottom: 6px; }
.search-result-title { font-size: 1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 6px; font-family: 'Inter', sans-serif; }
.search-result-title a { color: inherit; }
.search-result-title a:hover { color: var(--midnight-blue); }
.search-result-excerpt { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; }

/* Utility overrides */
@media (max-width: 480px) {
  .info-grid { grid-template-columns: 1fr; }
  .article-meta { flex-wrap: wrap; gap: 6px; }
  .comparison-table th, .comparison-table td { padding: 10px 12px; font-size: 0.8rem; }
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.4rem; }
}