/* ============================================================
   تاتامی پلاس — Responsive layers
   ============================================================ */

@media (max-width: 1100px) {
  .main-nav a {
    padding: 8px 10px;
    font-size: 0.86rem;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .store-layout {
    grid-template-columns: 240px 1fr;
  }
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 960px) {
  .section {
    padding: 72px 0;
  }

  .nav-toggle {
    display: grid;
  }

  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(7, 17, 31, 0.98);
    border-bottom: 1px solid var(--border);
    padding: 16px 20px 24px;
    margin: 0;
    transform: translateY(-14px);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity 0.25s var(--ease),
      transform 0.25s var(--ease);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

  .main-nav.is-open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  .main-nav a {
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.98rem;
  }

  .header-actions {
    margin-inline-start: auto;
  }

  .hero {
    padding: 56px 0 64px;
  }

  .hero-grid,
  .detail-grid,
  .cart-grid,
  .store-layout,
  .scene {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .scene:nth-child(even) .scene-media {
    order: 0;
  }

  .hero-visual img {
    height: 360px;
  }

  .scene-media img,
  .player img,
  .ai-stage img {
    height: 300px;
  }

  .sidebar,
  .summary {
    position: static;
  }

  .grid-3,
  .grid-4,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .container {
    width: min(100% - 32px, var(--container));
  }

  .section {
    padding: 56px 0;
  }

  .section-head--row {
    flex-direction: column;
    align-items: flex-start;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .steps,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    line-height: 1.6;
  }

  .hero-visual img {
    height: 280px;
  }

  .hero-badge {
    position: static;
    margin: 12px;
    flex-wrap: wrap;
  }

  .cta-band {
    padding: 42px 20px;
  }

  .btn {
    padding: 12px 20px;
  }

  .hero-cta .btn {
    flex: 1 1 100%;
  }

  .cart-item {
    grid-template-columns: 72px 1fr;
  }

  .cart-item img {
    width: 72px;
    height: 72px;
  }

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

  .toast-wrap {
    inset-inline: 16px;
    bottom: 16px;
  }

  .ai-chip {
    font-size: 0.7rem;
    padding: 5px 9px;
  }

  .brand span {
    font-size: 0.98rem;
  }
}

@media (max-width: 430px) {
  .header-inner {
    gap: 12px;
  }

  .header-actions {
    gap: 6px;
  }

  .header-actions .btn--sm {
    display: none;
  }
}

@media (max-width: 380px) {
  .brand-mark {
    display: none;
  }

  .icon-btn {
    width: 36px;
    height: 36px;
  }

  .brand span {
    font-size: 0.92rem;
  }
}