/* ==================== SITE LAYOUT ==================== */
.site-header {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: transform 0.3s ease, background-color 0.3s ease;
  height: 72px;
}

.site-header.scrolled {
  background-color: rgba(26, 26, 46, 0.95);
  box-shadow: var(--shadow-md);
}

.site-header.nav-hidden {
  transform: translateY(-100%);
}

.site-nav {
  padding: 0;
  height: 100%;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-6);
  flex: 1;
  height: 100%;
}

.nav-link.nav-cta {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--border-radius-full);
  font-weight: var(--font-weight-semibold);
}

.nav-link.nav-cta:hover {
  background: var(--color-accent-dark);
  color: var(--color-text-inverse);
}

.nav-brand {
  flex: 0 0 auto;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.nav-brand a {
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  transition: color var(--transition-fast);
}

.site-header .nav-brand-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  background: #0b0b0b;
  border: 1px solid #d4af37;
  border-radius: 6px;
  padding: 3px;
  flex: 0 0 40px;
  border-radius: 8px;
  object-fit: contain;
}

.nav-brand a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-6);
  flex: 1;
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  text-decoration: none;
}

.nav-link.nav-logout {
  color: var(--color-danger);
}

.nav-link.nav-user {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  position: relative;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
  font-size: inherit;
}

.nav-link.nav-user:hover {
  color: var(--color-accent);
}

.nav-search-wrapper {
  position: relative;
  margin-left: var(--spacing-4);
}

.nav-search-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-full);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nav-search-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-bg-dark);
}

.nav-search-dropdown {
  position: absolute;
  top: calc(100% + var(--spacing-2));
  right: 0;
  width: 300px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
}

.nav-search-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-search-dropdown .search-bar {
  display: flex;
  gap: var(--spacing-2);
}

.nav-search-dropdown .search-bar input {
  flex: 1;
  padding: var(--spacing-2) var(--spacing-3);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

.nav-search-dropdown .search-bar input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.nav-search-dropdown .search-bar button {
  padding: var(--spacing-2) var(--spacing-3);
  background: var(--color-accent);
  color: var(--color-text-inverse);
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.nav-search-dropdown .search-bar button:hover {
  background: var(--color-accent-dark);
}

.dropdown-arrow {
  font-size: 0.7em;
  margin-left: var(--spacing-1);
  transition: transform var(--transition-fast);
}

.nav-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: var(--z-dropdown);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  margin-top: var(--spacing-2);
  pointer-events: none;
}

.dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown-item {
  display: block;
  padding: var(--spacing-3) var(--spacing-4);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: background var(--transition-fast);
  cursor: pointer;
}

.dropdown-item:hover {
  background: var(--color-bg-card);
  color: var(--color-accent);
}

.dropdown-item.dropdown-logout {
  color: var(--color-danger);
}

.dropdown-item.dropdown-logout:hover {
  background: var(--color-danger-light);
  color: var(--color-danger);
}

.dropdown-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--spacing-2) 0;
}

.nav-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}

.nav-divider {
  width: 1px;
  height: 24px;
  background-color: var(--color-border);
  margin: 0 var(--spacing-2);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  padding: var(--spacing-2);
  cursor: pointer;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  border-radius: 1px;
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-search {
    display: none;
  }

  .nav-search-wrapper {
    display: none;
  }

  .nav-menu.active .nav-search-wrapper {
    display: block;
    margin: 0 var(--spacing-4) var(--spacing-4);
  }

  .nav-search-dropdown {
    position: static;
    width: 100%;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    background: var(--color-bg-tertiary);
    border: none;
    padding: 0;
  }

  .nav-search-dropdown .search-bar {
    background: var(--color-bg-secondary);
  }

  .nav-search-toggle {
    display: none;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: var(--spacing-2);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
    align-items: stretch;
    justify-content: flex-start;
  }

  .nav-menu.active {
    max-height: 500px;
  }

  .nav-link {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
  }

  .nav-divider {
    display: none;
  }
}

/* ==================== MAIN CONTENT ==================== */
.site-main {
  flex: 1;
  min-height: calc(100vh - 72px - 300px);
}

/* ==================== FOOTER ==================== */
.site-footer {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-20);
  padding: var(--spacing-16) 0 var(--spacing-8);
  border-top: 1px solid var(--color-border);
}

.site-footer a {
  color: var(--color-accent);
}

.site-footer a:hover {
  color: var(--color-accent-light);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}

.footer-section h3 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-base);
}

.footer-section p {
  margin: 0 0 var(--spacing-4);
  line-height: var(--line-height-relaxed);
  opacity: 0.9;
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li {
  margin-bottom: var(--spacing-2);
}

.footer-section a {
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-6);
  text-align: center;
  opacity: 0.8;
  font-size: var(--font-size-sm);
}

/* ==================== MESSAGES ==================== */
.messages-container {
  position: fixed;
  top: 80px;
  right: var(--spacing-4);
  z-index: var(--z-notification);
  max-width: 400px;
  max-height: 80vh;
  overflow-y: auto;
}

.message {
  margin-bottom: var(--spacing-4);
  animation: slideIn 300ms ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ==================== PAGINATION ==================== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  margin: var(--spacing-8) 0;
  flex-wrap: wrap;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: var(--spacing-2) var(--spacing-3);
  border: var(--border-width-default) solid var(--color-border);
  border-radius: var(--border-radius-md);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-fast);
}

.pagination a:hover {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

.pagination .active span {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

.pagination .disabled span {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ==================== BREADCRUMBS ==================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-link);
}

.breadcrumb a:hover {
  color: var(--color-link-hover);
}

.breadcrumb .separator {
  color: var(--color-border-dark);
  margin: 0 var(--spacing-2);
}

/* ==================== BADGES ==================== */
.badge {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.badge.success {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.badge.danger {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
}

.badge.warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.badge.info {
  background-color: var(--color-info-light);
  color: var(--color-info);
}

/* ==================== LOADING STATES ==================== */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-secondary) 0%, #fff 50%, var(--color-bg-secondary) 100%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.loader {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ==================== EMPTY STATES ==================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-12) var(--spacing-6);
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius-lg);
  border: 2px dashed var(--color-border);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-4);
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-2);
}

.empty-state-description {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-6);
}

/* ==================== GRID LAYOUTS ==================== */
.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

@media (max-width: 768px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
}

/* ==================== ASPECT RATIO ==================== */
.aspect-ratio {
  position: relative;
  overflow: hidden;
}

.aspect-ratio::before {
  content: "";
  display: block;
  padding-bottom: var(--aspect-ratio, 100%);
}

.aspect-ratio > * {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.aspect-square {
  --aspect-ratio: 100%;
}

.aspect-video {
  --aspect-ratio: calc(100% / 16 * 9);
}

.aspect-4-3 {
  --aspect-ratio: calc(100% / 4 * 3);
}

.aspect-3-2 {
  --aspect-ratio: calc(100% / 3 * 2);
}

/* ==================== VISIBILITY & DISPLAY ==================== */
@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .show-mobile {
    display: none !important;
  }
}

/* ==================== FOCUS VISIBLE ==================== */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--border-radius-md);
}

/* ==================== PREMIUM BOOK CARDS ==================== */
.book-card-premium {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
  width: var(--book-card-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  height: auto;
}

.book-card-premium:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  border-color: var(--color-accent);
}

.book-card-premium .book-cover-wrapper {
  position: relative;
  aspect-ratio: var(--book-cover-ratio);
  overflow: hidden;
  background: var(--color-bg-tertiary);
  width: 100%;
  flex-shrink: 0;
}

.book-card-premium .book-cover-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.book-card-premium .book-cover-wrapper div[style*="background"] {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-card-premium .book-cover-fallback {
  width: 100%;
  height: 100%;
  padding: var(--spacing-3);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--spacing-1);
  color: #fff;
  background: linear-gradient(145deg, #25364a, #8c3f52);
  text-align: left;
}

.book-card-premium .book-cover-fallback strong {
  font-size: 0.8rem;
  line-height: 1.25;
}

.book-card-premium .book-cover-fallback small {
  font-size: 0.68rem;
  line-height: 1.2;
  opacity: 0.82;
}

.book-card-premium:hover .book-cover-wrapper img {
  transform: scale(1.05);
}

.book-card-premium .book-content {
  padding: var(--spacing-2);
  background: var(--color-bg-card);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 70px;
}

.book-card-premium .book-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
  line-height: 1.2;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.4em;
}

.book-card-premium .book-title a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.book-card-premium .book-title a:hover {
  color: var(--color-accent);
}

.book-card-premium .book-author {
  font-size: 0.65rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-1);
  line-height: 1.1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 1.1em;
}

.book-card-premium .book-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: 0.6rem;
  color: var(--color-text-muted);
  margin-top: auto;
  flex-wrap: wrap;
  height: 1.1em;
}

.book-card-premium .book-rating {
  display: flex;
  align-items: center;
  gap: 2px;
  color: var(--color-rating);
  font-weight: 600;
}

.book-card-premium .book-status {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  backdrop-filter: blur(4px);
  background: rgba(0, 0, 0, 0.7);
  z-index: 2;
}

.book-card-premium .status-ongoing {
  background: rgba(0, 217, 165, 0.9);
  color: #fff;
}

.book-card-premium .status-completed {
  background: rgba(83, 82, 237, 0.9);
  color: #fff;
}

.book-card-premium .status-hiatus {
  background: rgba(255, 165, 2, 0.9);
  color: #fff;
}

/* ==================== HERO SECTION ==================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  padding: var(--spacing-12) 0;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(233, 69, 96, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-8);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-book-cover {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 2/3;
  border-radius: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  object-fit: cover;
  margin: 0 auto;
  transition: transform var(--transition-base);
}

.hero-book-cover:hover {
  transform: scale(1.02);
}

.hero-book-cover[style] {
  object-fit: none;
}

.hero-book-cover-bg {
  display: block;
  object-fit: none;
}

.hero-book-info {
  padding: var(--spacing-4);
}

.hero-book-info .featured-badge {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-text-inverse);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-4);
}

.hero-book-info h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-3);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.hero-book-info .author {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-3);
  font-weight: 500;
}

.hero-book-info .description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-4);
  max-width: 600px;
  font-size: 0.95rem;
}

.hero-book-info .meta {
  display: flex;
  gap: var(--spacing-4);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: var(--spacing-4);
  flex-wrap: wrap;
}

.hero-book-info .rating {
  color: var(--color-rating);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-3);
  margin-top: var(--spacing-6);
  flex-wrap: wrap;
}

/* ==================== BOOK SECTIONS ==================== */
.book-section {
  padding: var(--spacing-10) 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-6);
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0;
  letter-spacing: -0.5px;
}

.section-header a {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.section-header a:hover {
  color: var(--color-accent-light);
}

/* ==================== BOOK CAROUSEL ==================== */
.book-carousel {
  display: flex;
  gap: var(--spacing-4);
  overflow-x: auto;
  padding: var(--spacing-2) var(--spacing-4) var(--spacing-6);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) var(--color-bg-secondary);
}

.book-carousel::-webkit-scrollbar {
  height: 6px;
}

.book-carousel::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
  border-radius: 3px;
}

.book-carousel::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.book-carousel::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

.book-carousel .book-card-premium {
  scroll-snap-align: start;
  flex-shrink: 0;
}

/* ==================== BOOK GRID ==================== */
.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--book-card-width), 1fr));
  gap: var(--spacing-4);
}

@media (min-width: 768px) {
  .book-grid {
    grid-template-columns: repeat(auto-fill, minmax(var(--book-card-width), 1fr));
    gap: var(--spacing-5);
  }
}

@media (min-width: 1024px) {
  .book-grid {
    grid-template-columns: repeat(auto-fill, minmax(var(--book-card-width), 1fr));
    gap: var(--spacing-6);
  }
}

@media (min-width: 1440px) {
  .book-grid {
    grid-template-columns: repeat(auto-fill, minmax(calc(var(--book-card-width) * 1.1), 1fr));
    gap: var(--spacing-6);
  }
}

.book-carousel .book-card-premium {
  width: var(--book-card-width);
  scroll-snap-align: start;
}

@media (max-width: 1200px) {
  .book-carousel .book-card-premium {
    width: var(--book-card-width);
  }
}

@media (max-width: 768px) {
  .book-carousel .book-card-premium {
    width: var(--book-card-width);
  }
  
  .hero-featured {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-actions {
    justify-content: center;
  }
}

/* ==================== GENRE TAGS ==================== */
.genre-tag {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-3);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-full);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.genre-tag:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-inverse);
  transform: translateY(-2px);
}

/* ==================== RATING STARS ==================== */
.rating-stars {
  display: flex;
  gap: 2px;
  color: var(--color-rating);
}

.rating-stars .star {
  font-size: 1.2rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.rating-stars .star:hover,
.rating-stars .star.active {
  color: var(--color-rating);
}

.rating-stars .star.inactive {
  color: var(--color-border);
}

/* ==================== TOAST NOTIFICATIONS ==================== */
.toast-container {
  position: fixed;
  bottom: var(--spacing-6);
  right: var(--spacing-6);
  z-index: var(--z-notification);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.toast {
  min-width: 300px;
  padding: var(--spacing-4);
  border-radius: var(--border-radius-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  animation: slideIn 0.3s ease-out;
  transition: all var(--transition-base);
}

.toast.success {
  border-left: 4px solid var(--color-success);
}

.toast.error {
  border-left: 4px solid var(--color-danger);
}

.toast.warning {
  border-left: 4px solid var(--color-warning);
}

.toast.info {
  border-left: 4px solid var(--color-info);
}

.toast-icon {
  flex: 0 0 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
}

.toast-content {
  flex: 1;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

.toast-close {
  flex: 0 0 24px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.toast-close:hover {
  opacity: 1;
}

.toast.removing {
  animation: slideOut 0.3s ease-out forwards;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(100%);
  }
}

/* ==================== MODAL COMPONENTS ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--spacing-8);
  transform: scale(0.9);
  transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-6);
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  padding: var(--spacing-2);
  cursor: pointer;
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text-primary);
}

.modal-body {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-3);
  margin-top: var(--spacing-6);
}

/* ==================== LOADING SPINNERS ==================== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ==================== SKELETON LOADERS ==================== */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 50%, var(--color-bg-secondary) 100%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--border-radius-md);
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-text {
  height: 1em;
  margin-bottom: var(--spacing-2);
}

.skeleton-title {
  height: 1.5em;
  margin-bottom: var(--spacing-3);
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.skeleton-cover {
  aspect-ratio: 2/3;
  width: 100%;
}

/* ==================== SEARCH BAR ==================== */
.search-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-fast);
}

.search-bar:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(216, 155, 53, 0.1);
}

.search-bar input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 0;
  color: var(--color-text-primary);
}

.search-bar input:focus {
  outline: none;
  box-shadow: none;
}

.search-bar input::placeholder {
  color: var(--color-text-muted);
}

.search-bar button {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  border: none;
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--border-radius-md);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-bar button:hover {
  background: var(--color-accent-dark);
}

/* ==================== RATING STARS ==================== */
.rating-stars {
  display: inline-flex;
  gap: 2px;
  color: var(--color-rating);
}

.rating-stars .star {
  font-size: var(--font-size-base);
}

.rating-stars .star.empty {
  color: var(--color-border-dark);
}

/* ==================== MOBILE ENHANCEMENTS ==================== */
@media (max-width: 768px) {
  /* Mobile-specific bottom navigation could be added here */
  .mobile-bottom-nav {
    display: none; /* Hidden by default, can be enabled if needed */
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3) 0;
    z-index: var(--z-fixed);
  }

  .mobile-bottom-nav.active {
    display: flex;
    justify-content: space-around;
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-1);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-xs);
    padding: var(--spacing-2);
  }

  .mobile-nav-item.active {
    color: var(--color-accent);
  }

  .mobile-nav-item svg {
    width: 24px;
    height: 24px;
  }

  /* Touch-friendly tap targets */
  button,
  a,
  .nav-link,
  .genre-tag,
  .book-card-premium {
    min-height: 44px; /* WCAG 2.5.5 touch target size */
    min-width: 44px;
  }

  /* Mobile-specific spacing adjustments */
  .container {
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
  }

  /* Hide less important elements on mobile */
  .hide-mobile {
    display: none !important;
  }

  /* Mobile-specific typography */
  h1 {
    font-size: var(--font-size-2xl);
  }

  h2 {
    font-size: var(--font-size-xl);
  }

  /* Mobile-specific interactions */
  .mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  /* Swipe gestures for carousels */
  .book-carousel {
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }

  .book-carousel .book-card-premium {
    scroll-snap-align: start;
  }
}

/* ==================== TOUCH GESTURES ==================== */
.touch-action-manipulation {
  touch-action: manipulation;
}

/* Prevent zoom on double-tap for interactive elements */
button,
a,
input,
select,
textarea {
  touch-action: manipulation;
}

/* ==================== MOBILE OPTIMIZATIONS ==================== */
@media (max-width: 480px) {
  /* Extra small mobile devices */
  .container {
    padding-left: var(--spacing-3);
    padding-right: var(--spacing-3);
  }

  .book-card-premium {
    width: 110px;
  }

  .hero-content {
    padding: var(--spacing-6) var(--spacing-3);
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-2);
  }
}

/* ==================== LANDSCAPE MOBILE ==================== */
@media (max-width: 768px) and (orientation: landscape) {
  .hero-carousel {
    min-height: 300px;
  }

  .hero-content {
    padding: var(--spacing-6);
  }
}

/* ==================== ACCESSIBILITY - REDUCED MOTION ==================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==================== HIGH CONTRAST MODE ==================== */
@media (prefers-contrast: high) {
  :root {
    --color-border: rgba(255, 255, 255, 0.3);
    --color-text-secondary: #e0e0e0;
  }

  .book-card-premium:hover {
    border-width: 2px;
  }

  button:focus-visible,
  a:focus-visible {
    outline-width: 3px;
  }
}

.search-bar input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 0;
  color: var(--color-text-primary);
}

.search-bar input:focus {
  outline: none;
  box-shadow: none;
}

.search-bar button {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  border: none;
  padding: var(--spacing-2) var(--spacing-4);
  border-radius: var(--border-radius-md);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-bar button:hover {
  background: var(--color-accent-dark);
}

/* ==================== LOADING SKELETON ==================== */
.skeleton-book {
  background: linear-gradient(90deg, var(--color-bg-tertiary) 0%, var(--color-bg-card) 50%, var(--color-bg-tertiary) 100%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}