@media (max-width: 1440px) {
  :root,
  [data-theme="dark"],
  [data-theme="light"] {
    --container: min(1080px, calc(100% - 1.5rem));
  }
}

@media (max-width: 1280px) {
  .card-grid-3,
  .stats-grid,
  .dashboard-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .brand {
    min-width: 10.4rem;
  }

  .brand-copy small {
    display: none;
  }

  .nav-shell {
    gap: 0.65rem;
  }

  .nav-menu,
  .nav-primary,
  .nav-secondary {
    gap: 0.36rem;
  }

  .nav-link {
    padding-inline: 0.42rem;
    font-size: 0.78rem;
  }
}

@media (max-width: 1024px) {
  .hero-grid,
  .footer-grid,
  .neon-command-strip,
  .mc-status-strip,
  .channel-choice-grid,
  .channel-bar-grid,
  .mc-hero-shell,
  .mc-video-hero .mc-hero-shell,
  .mc-timeline,
  .builder-shell {
    grid-template-columns: 1fr;
  }

  .card-grid-3,
  .stats-grid,
  .dashboard-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-bottom,
  .cta-panel,
  .newsletter-form {
    flex-direction: column;
    align-items: flex-start;
  }

  .builder-preview-panel {
    position: static;
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav-menu {
    position: fixed;
    inset: 4.4rem 0.75rem auto;
    flex-direction: column;
    align-items: stretch;
    padding: 0.85rem;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: var(--surface-strong);
    box-shadow: var(--shadow-lg);
    transform: translateY(-0.65rem);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  .nav-menu.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-primary,
  .nav-secondary {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-link,
  .nav-secondary .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 900px) {
  .split-panel,
  .dashboard-layout,
  .contact-layout,
  .feedback-layout,
  .auth-layout {
    grid-template-columns: 1fr;
  }

  .contact-layout .form-panel,
  .dashboard-layout .form-panel,
  .feedback-layout .form-panel {
    position: static;
  }

}

@media (max-width: 768px) {
  .card-grid-2,
  .card-grid-3,
  .stats-grid,
  .dashboard-grid,
  .form-grid,
  .builder-field-grid,
  .admin-metric-grid {
    grid-template-columns: 1fr;
  }

  .site-main {
    padding-top: 4.2rem;
  }

  .nav-shell {
    border-radius: 20px;
  }

  .brand-copy small {
    display: none;
  }

  .brand {
    min-width: 0;
  }

  .hero-actions,
  .channel-choice-actions,
  .channel-bar-head,
  .widget-panel-head,
  .card-actions,
  .card-meta,
  .card-stats,
  .builder-section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .admin-tabs,
  .builder-toolbar,
  .builder-actions {
    align-items: stretch;
  }

  .admin-tabs a,
  .builder-toolbar .btn,
  .builder-actions .btn {
    width: 100%;
  }

  .widget-panel-head .inline-select,
  .newsletter-form .form-control,
  .newsletter-form .btn {
    width: 100%;
  }

  .image-slot-hero .image-slot-frame,
  .image-slot-portrait .image-slot-frame {
    min-height: 13rem;
  }

  .mc-hero {
    min-height: auto;
  }

  .mc-world-card,
  .mc-map-panel,
  .mc-video-console {
    min-height: 19rem;
  }

  .channel-link-row a,
  .channel-link-row span {
    flex: 1 1 9rem;
    justify-content: center;
  }

  .mc-voxel-world {
    min-height: 12.5rem;
    transform: perspective(700px) rotateX(55deg) rotateZ(-32deg) scale(0.86);
  }
}

@media (max-width: 414px) {
  :root,
  [data-theme="dark"],
  [data-theme="light"] {
    --container: min(1120px, calc(100% - 1rem));
  }

  .site-header {
    padding: 0.5rem 0;
  }

  .nav-shell {
    padding: 0.5rem 0.6rem;
  }
}

@media (max-width: 390px) {
  .hero-actions .btn,
  .nav-secondary .btn {
    width: 100%;
  }

  .btn {
    min-height: 2.3rem;
    padding: 0.48rem 0.68rem;
  }
}

@media (max-width: 375px) {
  .brand-mark {
    width: 2.1rem;
    height: 2.1rem;
    font-size: 0.78rem;
  }

  .hero-meta-card {
    padding: 0.7rem 0.75rem;
  }
}

@media (max-width: 320px) {
  .nav-shell {
    border-radius: 14px;
  }

  .page-hero .hero-description {
    font-size: 0.92rem;
  }

  .filter-chip {
    font-size: 0.78rem;
  }
}