/* MindWave — Responsive (mobile-first up) */
@media (max-width: 1280px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-col--support { grid-column: 2 / span 2; }
  .product-detail { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
  .checkout-layout { grid-template-columns: 1fr 340px; }
  .cart-layout { grid-template-columns: 1fr 320px; }
}

@media (max-width: 1024px) {
  :root { --fs-5xl: 48px; --fs-4xl: 38px; --fs-3xl: 30px; }
  .nav { display: none; }
  .menu-toggle {
    display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%;
    background: var(--color-surface-2); border: 1px solid var(--color-border);
  }
  .menu-toggle svg { width: 20px; height: 20px; }
  .menu-toggle .close { display: none; }
  body.nav-open .menu-toggle .open { display: none; }
  body.nav-open .menu-toggle .close { display: block; }

  .mobile-nav {
    display: block; position: fixed; inset: var(--header-h) 0 0 0; background: var(--color-bg);
    transform: translateX(100%); transition: transform var(--transition); z-index: 99; padding: var(--space-5);
    overflow-y: auto;
  }
  body.nav-open .mobile-nav { transform: translateX(0); }
  .mobile-nav a { display: block; padding: 14px 12px; font-size: var(--fs-lg); font-weight: 600; border-bottom: 1px solid var(--color-border); color: var(--color-text); }
  .mobile-nav a:hover, .mobile-nav a.active { color: var(--color-accent); }

  .hero-slide { grid-template-columns: 1fr; gap: var(--space-5); min-height: auto; }
  .hero-visual { order: -1; max-width: 560px; margin: 0 auto; }
  .hero-title { font-size: var(--fs-4xl); }

  .story-teaser { grid-template-columns: 1fr; }
  .story-teaser .media { max-width: 560px; }

  .grid--4 { grid-template-columns: repeat(3, 1fr); }

  .product-detail { grid-template-columns: 1fr; }
  .gallery { position: static; }
  .gallery-main { max-width: 560px; }

  .cart-layout { grid-template-columns: 1fr; }
  .cart-summary { position: static; }
  .checkout-layout { grid-template-columns: 1fr; }
  .order-summary { position: static; }
  .contact-layout { grid-template-columns: 1fr; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-tabs { position: static; flex-direction: row; overflow-x: auto; padding-bottom: var(--space-3); }
  .faq-tabs button { white-space: nowrap; }
}

@media (max-width: 768px) {
  :root { --fs-5xl: 36px; --fs-4xl: 30px; --fs-3xl: 26px; --fs-2xl: 22px; }
  .section { padding: var(--space-7) 0; }
  .container { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .footer-col--support { grid-column: auto; }
  .footer-bottom { flex-direction: column; gap: var(--space-3); text-align: center; }

  .grid--2, .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--auto { grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }

  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }

  .feature-list { grid-template-columns: 1fr; }
  .in-box ul { grid-template-columns: 1fr; }

  .cart-row { grid-template-columns: 64px 1fr; grid-template-areas: "media info" "media actions"; row-gap: var(--space-3); padding: var(--space-4); }
  .cart-row .media { width: 64px; height: 64px; grid-area: media; }
  .cart-row .info { grid-area: info; }
  .cart-row .qty-wrap { grid-area: actions; display: flex; justify-content: space-between; align-items: center; }
  .cart-row .unit { display: none; }

  .row { flex-direction: column; gap: 0; }
  .row > * { width: 100%; }

  .values-grid { grid-template-columns: 1fr; }
  .hero-meta { gap: var(--space-4); }
}

@media (max-width: 480px) {
  :root { --fs-5xl: 30px; --fs-4xl: 26px; --fs-3xl: 22px; }
  .grid--2, .grid--3, .grid--4, .grid--auto { grid-template-columns: 1fr; }
  .gallery-thumbs { grid-template-columns: repeat(4, 1fr); }
  .confirm-card .head { flex-direction: column; align-items: flex-start; }
}

/* Print-friendly fallbacks */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}