/* ==================== Tablet (768px - 1024px) ==================== */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 220px;
  }

  #app-content {
    padding: var(--space-xl) var(--space-lg);
  }

  .home-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .home-actions {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .book-detail-layout {
    grid-template-columns: 180px 1fr;
    gap: var(--space-xl);
  }
}

/* ==================== Mobile (< 768px) ==================== */
@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: flex;
  }

  #main-nav {
    transform: translateX(-100%);
    width: 280px;
    z-index: 200;
  }

  #main-nav.open {
    transform: translateX(0);
  }

  #app-content {
    margin-left: 0;
    padding: var(--space-xl) var(--space-md);
    padding-top: calc(var(--space-xl) + 56px);
  }

  /* Home page */
  .home-greeting {
    padding: var(--space-lg);
  }

  .home-greeting-content {
    flex-direction: column;
    text-align: center;
  }

  .home-greeting-title {
    font-size: 1.75rem;
  }

  .home-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .stat-card {
    padding: var(--space-md);
  }

  .stat-value {
    font-size: 2rem;
  }

  .home-actions {
    grid-template-columns: 1fr;
  }

  /* Book detail */
  .book-detail-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .book-detail-sidebar {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
  }

  .book-detail-cover {
    width: 140px;
    flex-shrink: 0;
  }

  .book-detail-actions {
    flex: 1;
    margin-top: 0;
  }

  .book-detail-title {
    font-size: 1.75rem;
  }

  /* Search */
  .search-genres .chip-group {
    gap: var(--space-xs);
  }

  .book-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: var(--space-md);
  }

  /* Shelves */
  .shelves-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .shelf-card-covers {
    height: 100px;
  }

  .shelf-card-cover {
    width: 60px;
    height: 90px;
  }

  /* Profile */
  .profile-header {
    flex-direction: column;
    text-align: center;
  }

  .profile-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .top-books-display {
    grid-template-columns: repeat(3, 1fr);
    max-width: 100%;
  }

  /* Quotes */
  .quotes-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .quotes-controls .search-compact {
    max-width: 100% !important;
  }

  /* Modal */
  .modal {
    margin: var(--space-md);
    max-width: calc(100% - var(--space-xl));
  }

  /* Toast */
  #toast-root {
    top: auto;
    bottom: var(--space-lg);
    left: var(--space-md);
    right: var(--space-md);
  }

  .toast {
    max-width: 100%;
  }

  /* Page header */
  .page-title {
    font-size: 1.5rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }
}

/* ==================== Small Mobile (< 480px) ==================== */
@media (max-width: 480px) {
  .home-stats {
    grid-template-columns: 1fr 1fr;
  }

  .shelves-grid {
    grid-template-columns: 1fr;
  }

  .book-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .profile-stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .book-detail-sidebar {
    flex-direction: column;
    align-items: center;
  }

  .book-detail-cover {
    width: 180px;
  }

  .book-detail-actions {
    width: 100%;
  }
}

/* ==================== Large Desktop (> 1400px) ==================== */
@media (min-width: 1400px) {
  #app-content {
    padding: var(--space-2xl) var(--space-3xl);
  }

  .book-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  }
}

/* ==================== Reduced Motion ==================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .mascot .mascot-eyes,
  .mascot .mascot-pupil,
  .mascot-waving .mascot-wave,
  .mascot-sleeping .mascot-zzz,
  .mascot-sleeping .mascot-zzz2,
  .mascot-sleeping .mascot-zzz3 {
    animation: none;
  }
}