@media (max-width: 1024px) {
  :root {
    --spacing-xxl: 32px;
  }
  
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .hs-card {
    width: 150px;
  }
  
  .book-3d {
    width: 130px;
    height: 175px;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 12px;
  }
  
  body {
    font-size: 12px;
    line-height: 1.5;
    padding-top: 50px;
  }
  
  :root {
    --spacing-xl: 24px;
    --spacing-xxl: 24px;
  }
  
  h1 {
    font-size: 20px;
  }
  
  h2 {
    font-size: 18px;
  }
  
  h3 {
    font-size: 16px;
  }
  
  h4 {
    font-size: 14px;
  }
  
  p {
    font-size: 12px;
    line-height: 1.6;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .navbar {
    padding: 4px 6px;
    font-size: 9px;
    height: 40px;
  }
  
  .navbar-brand {
    font-size: 11px;
    max-width: 70px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .navbar-nav {
    gap: 1px;
    flex-wrap: nowrap;
  }
  
  .navbar-link {
    padding: 1px 4px;
    font-size: 7px;
    white-space: nowrap;
  }
  
  .navbar-language .lang-btn {
    padding: 1px 3px;
    font-size: 6px;
    border-radius: 2px;
    min-width: 24px;
  }
  
  .navbar-language {
    gap: 1px;
    margin-right: 2px;
  }
  
  .user-info {
    gap: 4px;
  }
  
  .user-avatar {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }
  
  .user-name {
    display: none;
  }
  
  .hs-card {
    width: 80px;
  }
  
  .hs-card-avatar .avatar-placeholder {
    font-size: 26px;
  }
  
  .hs-card-name {
    font-size: 8px;
  }
  
  .hs-card-gems .gem {
    width: 12px;
    height: 12px;
    font-size: 6px;
  }
  
  .book-3d {
    width: 85px;
    height: 115px;
  }
  
  .book-3d:hover {
    transform: translateY(-10px);
  }
  
  .hero-title {
    font-size: 18px;
  }
  
  .hero-subtitle {
    font-size: 12px;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }
  
  .hero-buttons .btn {
    padding: 6px 16px;
    font-size: 11px;
  }
  
  .features-grid {
    gap: 10px;
    flex-wrap: nowrap;
  }
  
  .feature-card p {
    font-size: 9px;
    max-width: 80px;
  }
  
  .bookshelf {
    padding: 12px;
    gap: 12px;
  }
  
  .bookshelf .book-3d {
    width: 85px;
    height: 115px;
  }
  
  .book-3d .book-title {
    font-size: 9px;
  }
  
  .book-3d .book-tag {
    font-size: 7px;
    padding: 2px 5px;
  }
  
  .book-3d span {
    font-size: 28px !important;
  }
  
  .particles-container .particle:nth-child(n+30) {
    display: none;
  }
  
  .parchment {
    padding: var(--spacing-lg);
  }
  
  .wax-seal {
    width: 60px;
    height: 60px;
  }
  
  .wax-seal-icon {
    font-size: 24px;
  }
  
  .btn,
  .btn-action,
  .btn-3d,
  .hearthstone-btn,
  .scroll-nav-btn {
    padding: 4px 8px;
    font-size: 10px;
    min-height: 36px;
    min-width: 36px;
  }
  
  .btn-large {
    padding: 5px 10px;
    font-size: 11px;
  }
  
  .btn-small {
    padding: 3px 6px;
    font-size: 9px;
  }
  
  .navbar-nav .btn {
    padding: 1px 4px;
    font-size: 7px;
    min-height: 20px;
    min-width: auto;
    white-space: nowrap;
  }
  
  .page-content,
  .main-content {
    padding-top: 60px;
  }
}

@media (max-width: 480px) {
  :root {
    --spacing-lg: 16px;
    --spacing-xl: 16px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .hs-card {
    width: 160px;
    margin: 0 auto;
  }
  
  .book-3d {
    width: 140px;
    height: 185px;
    margin: 0 auto;
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 14px;
  }
  
  .navbar-brand {
    font-size: 18px;
  }
  
  .particles-container .particle:nth-child(n+20) {
    display: none;
  }
  
  .modal-content {
    padding: var(--spacing-lg);
  }
}

@media (hover: none) {
  .hs-card:hover,
  .book-3d:hover {
    transform: none;
  }
  
  .btn:hover {
    transform: none;
  }
}

@media (prefers-color-scheme: light) {
}

@media (prefers-reduced-motion: reduce) {
  .particle {
    animation: none;
    display: none;
  }
  
  .hs-card,
  .book-3d,
  .btn {
    transition: none;
  }
}