/* ── Mobile-first responsive breakpoints ─────────────────────────────────
   375px  — small mobile
   640px  — large mobile
   768px  — tablet
   1024px — small desktop
   1280px — full desktop
   ─────────────────────────────────────────────────────────────────────── */

/* ── Base mobile styles (375px+) ─────────────────────────────────────────── */
@media (max-width: 639px) {
  :root { --header-h: 60px; }

  .container { padding: 0 16px; }
  .section { padding: 40px 0; }

  /* Header */
  .main-nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: var(--bg); z-index: 990; overflow-y: auto; padding: 20px 0; flex-direction: column; }
  .main-nav.open { display: flex; }
  .main-nav > ul { flex-direction: column; padding: 0; }
  .main-nav > ul > li > a { padding: 14px 24px; font-size: 1rem; border-bottom: 1px solid var(--border-light); }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; border-radius: 0; background: var(--border-light); display: none; }
  .has-dropdown.open .dropdown { display: block; }
  .dropdown li a { padding: 10px 36px; }
  .hamburger { display: flex; }
  .header-inner { gap: 12px; }
  .auth-header-btns .btn-signin { display: none; }
  .header-icons .icon-btn:not(.cart-btn) { display: none; }
  .header-icons .cart-btn { display: flex; }
  .auth-header-btns { margin-left: 0; }

  /* Auth panel */
  .auth-panel-inner { padding: 24px 16px 32px; }

  /* Hero */
  .hero { min-height: 80vh; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 0.9rem; }
  .hero-btns { flex-direction: column; align-items: center; }
  .hero-btns .btn { width: 100%; max-width: 280px; }

  /* Collections */
  .collections-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .collections-grid .collection-card:last-child { grid-column: 1 / -1; }

  /* Products */
  .products-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .product-card-body { padding: 10px; }
  .product-name { font-size: 0.875rem; }
  .price-current { font-size: 0.95rem; }
  .btn-cart { padding: 8px; font-size: 0.78rem; }

  /* Trust */
  .trust-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .trust-item { padding: 20px 12px; }

  /* Gallery strip */
  .gallery-strip { grid-template-columns: repeat(3, 1fr); }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 0 16px 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  /* Shop */
  .shop-layout { grid-template-columns: 1fr; }
  .filters-sidebar { position: static; display: none; }
  .filters-sidebar.mobile-open { display: block; }
  .filter-toggle-btn { display: flex !important; }

  /* Product detail */
  .product-detail-layout { grid-template-columns: 1fr; gap: 24px; }
  .product-detail-actions { flex-direction: column; }
  .product-detail-actions .btn-cart-large,
  .product-detail-actions .btn-buynow { width: 100%; }

  /* Cart */
  .cart-layout { grid-template-columns: 1fr; }
  .order-summary-box { position: static; }
  .cart-item { grid-template-columns: 72px 1fr; }
  .cart-item-price { grid-column: 2; text-align: left; }

  /* Checkout */
  .checkout-layout { grid-template-columns: 1fr; }
  .order-summary-box { position: static; }
  .form-row { grid-template-columns: 1fr; }
  .bank-grid { grid-template-columns: repeat(2, 1fr); }
  .payment-tabs { overflow-x: auto; flex-wrap: nowrap; }
  .pay-tab-btn { flex-shrink: 0; min-width: 80px; }

  /* About */
  .story-grid { grid-template-columns: 1fr; gap: 32px; }
  .team-grid { grid-template-columns: 1fr; gap: 16px; }
  .cert-grid { grid-template-columns: 1fr; gap: 12px; }

  /* Wizard */
  .wizard-card { padding: 32px 20px; }

  /* Scroll row */
  .scroll-arrow { display: none; }
  .scroll-row .product-card { width: 200px; }

  /* Orders */
  .order-card-header { flex-direction: column; }
  .order-actions { flex-wrap: wrap; }

  /* OTP */
  .otp-input { width: 40px; height: 48px; font-size: 1.2rem; }

  /* Newsletter */
  .newsletter-form { flex-direction: column; }
  .newsletter-form input,
  .newsletter-form button { border-radius: var(--radius-btn); border: 1px solid rgba(255,255,255,0.2); }
  .newsletter-form input { border-right: 1px solid rgba(255,255,255,0.2); }
}

/* ── Tablet (640px – 1023px) ──────────────────────────────────────────────── */
@media (min-width: 640px) and (max-width: 1023px) {
  .container { padding: 0 20px; }

  /* Header */
  .main-nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; background: var(--bg); z-index: 990; padding: 16px 0; border-bottom: 1px solid var(--border); }
  .main-nav.open { display: block; }
  .main-nav > ul { flex-direction: column; }
  .main-nav > ul > li > a { padding: 12px 20px; border-bottom: 1px solid var(--border-light); }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; border-radius: 0; }
  .hamburger { display: flex; }

  /* Collections */
  .collections-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }

  /* Products */
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  /* Trust */
  .trust-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  /* Gallery */
  .gallery-strip { grid-template-columns: repeat(4, 1fr); }

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

  /* Shop */
  .shop-layout { grid-template-columns: 220px 1fr; gap: 20px; }

  /* Product detail */
  .product-detail-layout { grid-template-columns: 1fr 1fr; gap: 32px; }

  /* Cart */
  .cart-layout { grid-template-columns: 1fr; }
  .order-summary-box { position: static; max-width: 480px; }

  /* Checkout */
  .checkout-layout { grid-template-columns: 1fr; }

  /* About */
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }

  /* Wizard */
  .wizard-card { padding: 40px 32px; }
}

/* ── Small desktop (1024px – 1279px) ─────────────────────────────────────── */
@media (min-width: 1024px) and (max-width: 1279px) {
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .collections-grid { grid-template-columns: repeat(3, 1fr); }
  .trust-grid { grid-template-columns: repeat(4, 1fr); }
  .cart-layout { grid-template-columns: 1fr 320px; }
  .checkout-layout { grid-template-columns: 1fr 340px; }
  .shop-layout { grid-template-columns: 240px 1fr; }
}

/* ── Full desktop (1280px+) ──────────────────────────────────────────────── */
@media (min-width: 1280px) {
  .products-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ── Filter toggle button (mobile only) ─────────────────────────────────── */
.filter-toggle-btn {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  font-size: 0.875rem;
  font-weight: 600;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  margin-bottom: 16px;
}
.filter-toggle-btn svg { width: 18px; height: 18px; }

/* ── Mobile bottom actions (checkout button sticky on mobile) ─────────────── */
@media (max-width: 639px) {
  .mobile-sticky-cta {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    padding: 12px 16px;
    background: rgba(250,248,243,0.96);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--border);
    z-index: 500;
    display: flex;
    gap: 10px;
  }
  .mobile-sticky-cta .btn { flex: 1; }
  /* Add padding to body when sticky CTA is shown */
  body.has-sticky-cta main { padding-bottom: 80px; }
}

/* ── Accessible focus ring ────────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ── Print ────────────────────────────────────────────────────────────────── */
@media print {
  .site-header, .site-footer, .auth-panel, #toast-container { display: none; }
  body { background: #fff; }
  .container { max-width: 100%; }
}