/* National Audio Library for the Blind - Modern Frontend Styles */
/* Brand Colors: #F6DC4B (Yellow), #226C9F (Blue), #12170E (Dark Green) */

/* Color Scheme */
:root {
  --primary-color: #226c9f; /* Blue */
  --secondary-color: #f6dc4b; /* Yellow */
  --accent-color: #12170e; /* Dark Green */
  --light-color: #f8f9fa;
  --dark-color: #12170e;
  --text-color: #1a1a1a;
  --text-light: #666666;
  --border-color: #e0e0e0;
  --card-bg: #ffffff;
  --success-color: #28a745;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --gradient-primary: linear-gradient(135deg, #f6dc4b 0%, #f4d03f 100%) ;
  --gradient-secondary: linear-gradient(135deg, #226c9f 0%, #1a5276 100%);
  --gradient-accent: linear-gradient(135deg, #12170e 0%, #0a0c07 100%);
  --gradient-light: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  --shadow-light: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-medium: 0 6px 24px rgba(0, 0, 0, 0.1);
  --shadow-heavy: 0 12px 32px rgba(0, 0, 0, 0.15);
  --border-radius: 20px;
  --border-radius-sm: 12px;
  --border-radius-xs: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
.nal-book-catalog,
.nal-authors-list,
.nal-categories-list,
.nal-latest-books,
.nal-book-player,
.nal-single-book {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background: var(--card-bg);
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
}

/* Focus Styles for Accessibility */
.nal-book-catalog a:focus,
.nal-authors-list a:focus,
.nal-categories-list a:focus,
.nal-book-player a:focus,
.nal-book-player button:focus,
.nal-filter-button:focus,
.nal-reset-button:focus,
.nal-view-button:focus,
.nal-back-button:focus {
  outline: 3px solid var(--secondary-color);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(246, 220, 75, 0.3);
}

/* Catalog Header */
.nal-catalog-header {
  background: var(--gradient-light);
  border-radius: var(--border-radius);
  padding: 40px;
  margin-bottom: 40px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
}

.nal-header-content {
  flex: 1;
  min-width: 300px;
}

.nal-catalog-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-color);
  margin: 0 0 15px 0;
  line-height: 1.2;
  display: flex;
  align-items: center;
  gap: 15px;
}

.nal-title-icon {
  font-size: 2.2rem;
  background: var(--gradient-secondary);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(246, 220, 75, 0.3);
}

.nal-catalog-description {
  font-size: 1.1rem;
  color: var(--text-light);
  margin: 0;
  max-width: 600px;
  line-height: 1.6;
}

.nal-header-stats {
  display: flex;
  gap: 20px;
}

.nal-stat-box {
  background: white;
  border-radius: var(--border-radius-sm);
  padding: 25px;
  text-align: center;
  min-width: 180px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-light);
  transition: var(--transition);
}

.nal-stat-box:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-color);
}

.nal-stat-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.nal-stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-color);
  display: block;
  line-height: 1;
  margin-bottom: 5px;
}

.nal-stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Filters Section - Modern Design */
.nal-filters {
  background: var(--gradient-light);
  border-radius: var(--border-radius);
  padding: 40px;
  margin-bottom: 50px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-light);
  position: relative;
  overflow: hidden;
}

.nal-filters::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.nal-filters-header {
  margin-bottom: 35px;
}

.nal-filters h2 {
  color: var(--accent-color);
  margin: 0 0 10px 0;
  font-size: 1.8rem;
  font-weight: 800;
  position: relative;
  display: flex;
  align-items: center;
  gap: 15px;
}

.nal-filters-description {
  color: var(--text-light);
  margin: 0;
  font-size: 1rem;
}

.nal-filter-form {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.nal-filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.nal-filter-group {
  display: flex;
  flex-direction: column;
}

.nal-filter-group label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--accent-color);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nal-filter-icon {
  font-size: 1.2rem;
  color: var(--primary-color);
}
.nal-filter-group input,
.nal-filter-group select {
  width: 100%;
  padding: 16px 20px;
  font-size: 1rem;
  border: 1px solid #0000003d !important;
  color: var(--text-color);
  border-radius: 5px !important;
  transition: var(--transition);
  font-weight: 500;
  font-family: inherit;
}
.nal-filter-group input:focus,
.nal-filter-group select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(34, 108, 159, 0.1);
  outline: none;
}

.nal-filter-group input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23226C9F' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'%3E%3C/line%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 20px center;
  background-size: 20px;
  padding-left: 52px;
}

.nal-filter-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23226C9F' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: calc(100% - 20px) center;
  background-size: 16px;
  padding-right: 48px;
  cursor: pointer;
}

.nal-filter-actions {
  display: flex;
  gap: 15px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.nal-filter-button,
.nal-reset-button {
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 180px;
  justify-content: center;
  font-family: inherit;
}

.nal-filter-button {
  background: var(--gradient-primary);
  color: #000000b8;
  box-shadow: 0 4px 15px rgba(34, 108, 159, 0.2);
}

.nal-filter-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(34, 108, 159, 0.3);
}

.nal-filter-button:active {
  transform: translateY(-1px);
}

.nal-reset-button {
    background: white;
    color: #000000b8;
    border: 2px solid #f5d241;
    font-weight: 700;
}

.nal-reset-button:hover {
  background: #f5d241;
  color: #000000b8;
  border-color:#f5d241 ;
  transform: translateY(-3px);
  box-shadow: var(--shadow-medium);
}

/* Books Grid - Modern Cards */
.nal-books-grid-inner {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 30px;
  margin: 50px 0;
}

.nal-book-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  position: relative;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.nal-book-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-heavy);
  border-color: var(--primary-color);
}

.nal-book-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.nal-book-card-inner {
  padding: 30px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

/* Book Header */
.nal-book-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.nal-book-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(
    135deg,
    rgba(34, 108, 159, 0.1) 0%,
    rgba(34, 108, 159, 0.05) 100%
  );
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(34, 108, 159, 0.2);
}

.nal-book-icon svg {
  width: 28px;
  height: 28px;
}

.nal-book-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nal-platform-badge {
  background: #226C9F;
  color: white;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}


/* Book Content */
.nal-book-content {
  flex-grow: 1;
}

.nal-book-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 0 15px 0;
  line-height: 1.3;
  color: var(--accent-color);
}

.nal-book-title a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

.nal-book-title a:hover {
  color: var(--primary-color);
}

.nal-book-meta {
  margin-bottom: 20px;
}

.nal-book-meta > div {
  margin-bottom: 15px;
  font-size: 0.95rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.nal-meta-icon {
  color: var(--primary-color);
  width: 18px;
  height: 18px;
  font-size: 0.9rem;
  margin-top: 2px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nal-meta-label {
  font-weight: 600;
  color: var(--accent-color);
  min-width: 70px;
  flex-shrink: 0;
  font-size: 0.9rem;
}

.nal-book-meta a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition-fast);
  font-weight: 500;
}

.nal-book-meta a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

.nal-book-details {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 15px;
}

.nal-book-parts,
.nal-book-hours {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-light);
}

.nal-book-excerpt {
  margin: 20px 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-light);
  background: var(--light-color);
  padding: 15px;
  border-radius: var(--border-radius-xs);
  border-left: 4px solid var(--secondary-color);
}

/* Book Footer */
.nal-book-footer {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.nal-book-stats {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
}

.nal-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
}

.nal-stat-icon {
  color: var(--primary-color);
  font-size: 1rem;
}

.nal-stat-number {
  font-weight: 700;
  color: var(--accent-color);
}

.nal-stat-label {
  color: var(--text-light);
  font-size: 0.85rem;
}

.nal-book-actions {
  text-align: center;
}

.nal-view-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--gradient-primary);
  color: #000000b8;
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  font-size: 0.95rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  width: 100%;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-family: inherit;
}

.nal-view-button:hover {
  transform: translateY(-3px);
   color: #000000b8;
}

.nal-button-icon {
  font-size: 1rem;
}

/* Latest Books Section */
.nal-latest-books {
    background: white;
    padding: 0;
}

.nal-latest-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 20px;
}

.nal-latest-header h2 {
  color: var(--accent-color);
  margin: 0;
  font-size: 1.8rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 15px;
      margin-bottom: 6px !important;
}

.nal-latest-description {
  color: var(--text-light);
  margin: 0;
  font-size: 1rem;
  flex: 1;
  min-width: 300px;
}

.nal-view-all-button {
  padding: 12px 24px;
  background: white;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  font-size: 0.95rem;
  transition: var(--transition);
  border: 2px solid var(--primary-color);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nal-view-all-button:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-medium);
}

.nal-button-arrow {
  font-size: 1.2rem;
  transition: var(--transition-fast);
}

.nal-view-all-button:hover .nal-button-arrow {
  transform: translateX(3px);
}

/* Latest Books Grid */
.nal-latest-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
}

.nal-latest-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-light);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  position: relative;
}

.nal-latest-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-color);
}

.nal-latest-card-inner {
  padding: 25px;
}

.nal-new-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background: var(--gradient-secondary);
  color: var(--accent-color);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  z-index: 1;
}

.nal-badge-icon {
  font-size: 0.9rem;
}

.nal-latest-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(
    135deg,
    rgba(34, 108, 159, 0.1) 0%,
    rgba(34, 108, 159, 0.05) 100%
  );
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 2px solid rgba(34, 108, 159, 0.2);
}

.nal-latest-icon svg {
  width: 24px;
  height: 24px;
}

.nal-latest-content {
  margin-bottom: 20px;
}

.nal-latest-title {
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 0 15px 0;
  line-height: 1.3;
  color: var(--accent-color);
}

.nal-latest-title a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

.nal-latest-title a:hover {
  color: var(--primary-color);
}

.nal-latest-meta {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.nal-latest-author,
.nal-latest-category {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-light);
}

.nal-meta-text {
  font-weight: 500;
}

.nal-latest-details {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

.nal-latest-parts,
.nal-latest-hours {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-light);
  background: var(--light-color);
  padding: 6px 12px;
  border-radius: 20px;
}

.nal-detail-icon {
  font-size: 0.9rem;
}

.nal-latest-excerpt {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-light);
  margin: 15px 0;
}

.nal-latest-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 15px;
}

.nal-latest-platforms {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.nal-platform-tag {
  background: var(--gradient-primary);
  color: white;
  padding: 4px 10px;
  border-radius: 15px;
  font-size: 0.75rem;
  font-weight: 600;
}

.nal-latest-actions {
  flex-shrink: 0;
}

.nal-latest-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--gradient-primary);
  color: white;
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--border-radius-xs);
  font-size: 0.9rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.nal-latest-button:hover {
  background: var(--gradient-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-light);
}

/* No Books Found */
.nal-no-books-found {
  text-align: center;
  padding: 60px 40px;
  background: white;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-light);
  margin: 40px 0;
  border: 2px dashed var(--border-color);
}

.nal-no-books-icon {
  margin-bottom: 20px;
  opacity: 0.3;
  color: var(--primary-color);
}

.nal-no-books-icon svg {
  width: 80px;
  height: 80px;
}

.nal-no-books-found h3 {
  color: var(--accent-color);
  margin-bottom: 10px;
  font-size: 1.5rem;
  font-weight: 800;
}

.nal-no-books-found p {
  color: var(--text-light);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto 25px;
  line-height: 1.6;
}

.nal-clear-filters-button {
  padding: 12px 24px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: var(--border-radius-sm);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
}

.nal-clear-filters-button:hover {
  background: var(--gradient-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-medium);
}

/* Pagination */
.nal-pagination {
  margin: 60px 0;
  text-align: center;
}

.nal-pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin: 0 6px;
  border: 2px solid var(--border-color);
  background: white;
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.nal-pagination .page-numbers.current {
  background: var(--gradient-primary);
  color: white;
  border-color: var(--primary-color);
  box-shadow: var(--shadow-light);
}

.nal-pagination .page-numbers:hover:not(.current) {
  background: var(--gradient-secondary);
  color: var(--accent-color);
  border-color: var(--secondary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-medium);
}

.nal-pagination .page-numbers.dots {
  border: none;
  background: none;
  color: var(--accent-color);
  width: auto;
}

.nal-pagination .page-numbers.prev,
.nal-pagination .page-numbers.next {
  min-width: 100px;
  padding: 0 20px;
}

/* Authors List */
.nal-authors-list {
  background: var(--gradient-light);
  border-radius: var(--border-radius);
  padding: 40px;
  margin: 50px 0;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-light);
}

.nal-authors-header {
  margin-bottom: 30px;
}

.nal-authors-header h2 {
  color: var(--accent-color);
  margin: 0 0 10px 0;
  font-size: 1.8rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 15px;
}

.nal-authors-description {
  color: var(--text-light);
  margin: 0;
  font-size: 1rem;
}

.nal-authors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.nal-author-item {
  background: white;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.nal-author-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-color);
}

.nal-author-link {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 20px;
  text-decoration: none;
  color: var(--text-color);
  transition: var(--transition-fast);
}

.nal-author-link:hover {
  color: var(--primary-color);
}

.nal-author-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(
    135deg,
    rgba(34, 108, 159, 0.1) 0%,
    rgba(34, 108, 159, 0.05) 100%
  );
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(34, 108, 159, 0.2);
}

.nal-author-icon svg {
  width: 20px;
  height: 20px;
}

.nal-author-info {
  flex: 1;
}

.nal-author-name {
  font-weight: 700;
  font-size: 1.1rem;
  display: block;
  margin-bottom: 5px;
}

.nal-book-count {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
}

.nal-author-arrow {
  color: var(--primary-color);
  font-size: 1.2rem;
  font-weight: 700;
  opacity: 0.7;
  transition: var(--transition-fast);
}

.nal-author-link:hover .nal-author-arrow {
  opacity: 1;
  transform: translateX(5px);
}

/* Categories List */
.nal-categories-list {
    background: white;
    padding: 0;
    margin: 0;
}
a.nal-category-card {
    margin: 0;
}
.nal-categories-header {
  margin-bottom: 30px;
}

.nal-categories-header h2 {
  color: var(--accent-color);
  margin: 0 0 10px 0;
  font-size: 1.8rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 15px;
}

.nal-categories-description {
  color: var(--text-light);
  margin: 0;
  font-size: 1rem;
}

.nal-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 25px;
}

.nal-category-item {
    background: white;
    padding: 25px;
    transition: var(--transition);
    border: 1px solid #0000001f;
    border-radius: 5px;
}

.nal-category-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
  border-color: #f6dc4b;
}

.nal-category-card {
  display: flex;
  align-items: center;
  gap: 20px;
  text-decoration: none;
  color: var(--text-color);
  margin-bottom: 20px;
}

.nal-category-icon {
  width: 60px;
  height: 60px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  border: 3px solid;
  flex-shrink: 0;
}

.nal-category-info {
  flex: 1;
}

.nal-category-name {
  font-size: 1.2rem;
  font-weight: 800;
  margin: 0 0 8px 0;
  color: var(--accent-color);
}

.nal-book-count {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 600;
}

.nal-category-arrow {
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 700;
  opacity: 0.7;
  transition: var(--transition-fast);
}

.nal-category-card:hover .nal-category-arrow {
  opacity: 1;
  transform: translateX(5px);
}

.nal-child-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid var(--border-color);
}

.nal-child-category {
  font-size: 0.85rem;
  color: var(--primary-color);
  text-decoration: none;
  padding: 6px 12px;
  background: rgba(34, 108, 159, 0.1);
  border-radius: 15px;
  transition: var(--transition-fast);
}

.nal-child-category:hover {
  background: var(--primary-color);
  color: white;
  text-decoration: none;
}

.nal-more-child-categories {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 700;
  padding: 6px 12px;
}

/* Loading Spinner */
.nal-loading {
  text-align: center;
  padding: 80px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-color);
}

.nal-spinner {
  display: inline-block;
  width: 60px;
  height: 60px;
  margin-bottom: 20px;
  border: 4px solid rgba(34, 108, 159, 0.1);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: nal-spin 1s linear infinite;
}

@keyframes nal-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Responsive Design */
@media screen and (max-width: 1200px) {
  .nal-book-catalog,
  .nal-single-book {
    padding: 30px;
  }

  .nal-books-grid-inner {
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  }
}

@media screen and (max-width: 992px) {
  .nal-catalog-header {
    flex-direction: column;
    text-align: center;
    padding: 30px;
  }

  .nal-header-content {
    min-width: 100%;
  }

  .nal-catalog-title {
    justify-content: center;
  }

  .nal-catalog-description {
    margin: 0 auto;
  }

  .nal-header-stats {
    justify-content: center;
    width: 100%;
  }

  .nal-books-grid-inner {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }

  .nal-latest-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  }

  .nal-filter-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media screen and (max-width: 768px) {
  .nal-book-catalog,
  .nal-authors-list,
  .nal-categories-list,
  .nal-latest-books,
  .nal-book-player,
  .nal-single-book {
    padding: 20px;
  }

  .nal-books-grid-inner {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .nal-latest-grid {
    grid-template-columns: 1fr;
  }

  .nal-catalog-title {
    font-size: 2rem;
  }

  .nal-title-icon {
    width: 50px;
    height: 50px;
    font-size: 1.8rem;
  }

  .nal-stat-box {
    min-width: 150px;
    padding: 20px;
  }

  .nal-stat-number {
    font-size: 1.8rem;
  }

  .nal-filters {
    padding: 25px;
  }

  .nal-filters h2 {
    font-size: 1.5rem;
  }

  .nal-latest-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .nal-latest-header h2 {
    font-size: 1.5rem;
  }

  .nal-latest-description {
    min-width: 100%;
  }

  .nal-authors-grid,
  .nal-categories-grid {
    grid-template-columns: 1fr;
  }

  .nal-filter-actions {
    flex-direction: column;
  }

  .nal-filter-button,
  .nal-reset-button {
    width: 100%;
    min-width: 100%;
  }
}

@media screen and (max-width: 480px) {
  .nal-catalog-title {
    font-size: 1.8rem;
    flex-direction: column;
    gap: 10px;
  }

  .nal-title-icon {
    width: 45px;
    height: 45px;
    font-size: 1.5rem;
  }

  .nal-header-stats {
    flex-direction: column;
    align-items: center;
  }

  .nal-stat-box {
    width: 100%;
    max-width: 250px;
  }

  .nal-book-card-inner {
    padding: 20px;
  }

  .nal-book-title {
    font-size: 1.3rem;
  }

  .nal-book-meta > div {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
  }

  .nal-meta-label {
    min-width: auto;
    margin-bottom: 2px;
  }

  .nal-book-details {
    flex-direction: column;
    gap: 10px;
  }

  .nal-book-stats {
    flex-direction: column;
    gap: 10px;
  }

  .nal-latest-card-inner {
    padding: 20px;
  }

  .nal-latest-title {
    font-size: 1.2rem;
  }

  .nal-pagination .page-numbers {
    width: 40px;
    height: 40px;
    font-size: 0.9rem;
    margin: 0 4px;
  }
}

/* Utility Classes */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

.nal-error {
  padding: 20px;
  background: linear-gradient(135deg, #ffe6e6 0%, #ffcccc 100%);
  border: 2px solid #dc3545;
  color: #721c24;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  text-align: center;
}




/* Stats Dashboard Styles */
.nal-stats-dashboard {
    background: var(--gradient-light);
    border-radius: var(--border-radius);
    padding: 40px;
    margin: 50px 0;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);
    position: relative;
    overflow: hidden;
}

.nal-stats-dashboard::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.nal-stats-header {
    margin-bottom: 40px;
    text-align: center;
}

.nal-stats-title {
    color: var(--accent-color);
    margin: 0 0 15px 0;
    font-size: 2rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.nal-stats-description {
    color: var(--text-light);
    margin: 0;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 15px;
}

.nal-cache-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(34, 108, 159, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 500;
}

.nal-cache-icon {
    font-size: 0.9rem;
}

.nal-stats-grid-container {
    margin-bottom: 30px;
}

.nal-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
}

.nal-stats-grid[data-layout="cards"] {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.nal-stats-grid[data-layout="compact"] {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

@media (min-width: 1200px) {
    .nal-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.nal-stat-card {
    background: white;
    border-radius: var(--border-radius-sm);
    padding: 25px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.nal-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.nal-stat-card-books {
    border-top: 4px solid #226C9F;
}

.nal-stat-card-authors {
    border-top: 4px solid #F6DC4B;
}

.nal-stat-card-views {
    border-top: 4px solid #2ECC71;
}

.nal-stat-card-members {
    border-top: 4px solid #9B59B6;
}

.nal-stat-card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.nal-stat-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(34, 108, 159, 0.2);
}

.nal-stat-card-books .nal-stat-icon-wrapper {
    background: linear-gradient(135deg, rgba(34, 108, 159, 0.1) 0%, rgba(34, 108, 159, 0.05) 100%);
    border-color: rgba(34, 108, 159, 0.2);
}

.nal-stat-card-authors .nal-stat-icon-wrapper {
    background: linear-gradient(135deg, rgba(246, 220, 75, 0.1) 0%, rgba(246, 220, 75, 0.05) 100%);
    border-color: rgba(246, 220, 75, 0.2);
}

.nal-stat-card-views .nal-stat-icon-wrapper {
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.1) 0%, rgba(46, 204, 113, 0.05) 100%);
    border-color: rgba(46, 204, 113, 0.2);
}

.nal-stat-card-members .nal-stat-icon-wrapper {
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.1) 0%, rgba(155, 89, 182, 0.05) 100%);
    border-color: rgba(155, 89, 182, 0.2);
}

.nal-stat-icon {
    font-size: 1.5rem;
}

.nal-stat-title {
    color: var(--accent-color);
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
}

.nal-stat-card-content {
    flex-grow: 1;
    margin-bottom: 20px;
}

.nal-stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 10px;
    line-height: 1;
}

.nal-stat-description {
    color: var(--text-light);
    margin: 0;
    font-size: 0.9rem;
}

.nal-stat-card-footer {
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nal-stat-trend {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    font-weight: 600;
}

.nal-stat-trend-up {
    color: #2ECC71;
}

.nal-stat-trend-down {
    color: #E74C3C;
}

.nal-trend-icon {
    font-weight: 700;
}

.nal-stat-link {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.9rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.nal-stat-link:hover {
    color: var(--accent-color);
    gap: 8px;
}

.nal-link-arrow {
    transition: var(--transition-fast);
}

.nal-stat-link:hover .nal-link-arrow {
    transform: translateX(3px);
}

.nal-stats-loading {
    text-align: center;
    padding: 40px;
}

.nal-stats-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    margin-bottom: 15px;
    border: 3px solid rgba(34, 108, 159, 0.1);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: nal-spin 1s linear infinite;
}

.nal-stats-auto-refresh {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px;
    background: rgba(34, 108, 159, 0.05);
    border-radius: var(--border-radius-xs);
    border: 1px solid rgba(34, 108, 159, 0.1);
    font-size: 0.9rem;
}

.nal-refresh-icon {
    color: var(--primary-color);
}

.nal-refresh-text {
    color: var(--text-light);
}

.nal-refresh-now-button {
    background: var(--gradient-primary);
    color: var(--accent-color);
    border: none;
    padding: 6px 12px;
    border-radius: var(--border-radius-xs);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.nal-refresh-now-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

/* Compact layout adjustments */
.nal-stats-grid[data-layout="compact"] .nal-stat-card {
    padding: 15px;
}

.nal-stats-grid[data-layout="compact"] .nal-stat-icon-wrapper {
    width: 40px;
    height: 40px;
}

.nal-stats-grid[data-layout="compact"] .nal-stat-number {
    font-size: 2rem;
}

/* Responsive */
@media screen and (max-width: 768px) {
    .nal-stats-dashboard {
        padding: 25px;
    }
    
    .nal-stats-title {
        font-size: 1.5rem;
    }
    
    .nal-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nal-stats-grid[data-layout="compact"] {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 480px) {
    .nal-stats-grid[data-layout="compact"] {
        grid-template-columns: 1fr;
    }
    
    .nal-stats-auto-refresh {
        flex-direction: column;
        text-align: center;
    }
}




/* National Audio Library - Single Book Page Redesign */
:root {
    --nal-primary: #226C9F;
    --nal-secondary: #F6DC4B;
    --nal-accent: #12170E;
    --nal-light: #F8F9FA;
    --nal-gray-100: #F5F7FA;
    --nal-gray-200: #E4E7EB;
    --nal-gray-300: #CBD2D9;
    --nal-gray-400: #9AA5B1;
    --nal-gray-500: #7B8794;
    --nal-gray-600: #616E7C;
    --nal-gray-700: #3E4C59;
    --nal-gray-800: #1F2933;
    --nal-success: #10B981;
    --nal-warning: #F59E0B;
    --nal-error: #EF4444;
    --nal-border-radius: 12px;
    --nal-border-radius-sm: 8px;
    --nal-border-radius-xs: 4px;
    --nal-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --nal-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --nal-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --nal-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --nal-transition: all 0.2s ease-in-out;
}

/* Container */
.nal-book-single-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 40px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--nal-gray-800);
}

/* Breadcrumb */
.nal-book-breadcrumb-nav {
    padding: 24px 0;
    border-bottom: 1px solid var(--nal-gray-200);
    margin-bottom: 32px;
}

.nal-breadcrumb-list {
    display: flex;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    flex-wrap: wrap;
    gap: 8px;
}

.nal-breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nal-breadcrumb-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--nal-gray-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--nal-transition);
}

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

.nal-breadcrumb-icon {
    width: 16px;
    height: 16px;
}

.nal-breadcrumb-separator {
    color: var(--nal-gray-400);
    font-size: 14px;
}

.nal-breadcrumb-current {
    color: var(--nal-accent);
    font-size: 14px;
    font-weight: 600;
}

/* Layout Grid */
.nal-book-layout-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    margin-top: 24px;
}

/* Book Info Column */
.nal-book-main-header {
    background: linear-gradient(135deg, var(--nal-primary) 0%, #1a5276 100%);
    border-radius: var(--nal-border-radius);
    padding: 32px;
    color: white;
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
}

.nal-book-main-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.nal-book-platform-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.nal-platform-tag {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.nal-book-title-wrapper {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
}

.nal-book-icon-circle {
    width: 72px;
    height: 72px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.3);
    flex-shrink: 0;
}

.nal-book-main-title {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.2;
    margin: 0;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nal-book-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--nal-border-radius-sm);
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nal-stat-card {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nal-stat-icon {
    color: var(--nal-secondary);
}

.nal-stat-content {
    display: flex;
    flex-direction: column;
}

.nal-stat-number {
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 2px;
}

.nal-stat-label {
    font-size: 12px;
    font-weight: 600;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Meta Section */
.nal-book-meta-section,
.nal-book-description-section {
    background: white;
    border-radius: var(--nal-border-radius);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--nal-shadow-md);
    border: 1px solid var(--nal-gray-200);
}

.nal-section-heading {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--nal-accent);
    margin: 0 0 24px 0;
}

.nal-section-icon {
    font-size: 24px;
}

.nal-meta-details-grid {
    display: grid;
    gap: 20px;
}

.nal-meta-detail {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 20px;
    align-items: start;
}

.nal-meta-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--nal-gray-700);
    font-size: 14px;
}

.nal-meta-value {
    color: var(--nal-gray-800);
    line-height: 1.6;
}

.nal-meta-link {
    color: var(--nal-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--nal-transition);
}

.nal-meta-link:hover {
    color: var(--nal-accent);
    text-decoration: underline;
}

/* Description */
.nal-book-description-content {
    line-height: 1.7;
    color: var(--nal-gray-700);
}

.nal-book-description-content p {
    margin: 0 0 16px 0;
}

.nal-book-description-content p:last-child {
    margin-bottom: 0;
}

/* Action Column */
.nal-book-action-column {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Player Card */
.nal-book-player-card {
    background: white;
    border-radius: var(--nal-border-radius);
    padding: 24px;
    box-shadow: var(--nal-shadow-lg);
    border: 1px solid var(--nal-gray-200);
}

.nal-player-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.nal-player-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--nal-accent);
    margin: 0;
}

.nal-player-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--nal-success);
    background: rgba(16, 185, 129, 0.1);
    padding: 4px 10px;
    border-radius: 20px;
}

.nal-indicator-dot {
    width: 6px;
    height: 6px;
    background: var(--nal-success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.nal-audio-player-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.nal-book-audio-player {
    width: 100%;
    height: 48px;
    border-radius: var(--nal-border-radius-sm);
}

.nal-player-quick-controls {
    display: flex;
    gap: 8px;
}

.nal-quick-control-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--nal-gray-100);
    border: 2px solid var(--nal-gray-200);
    border-radius: var(--nal-border-radius-sm);
    color: var(--nal-gray-700);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--nal-transition);
}

.nal-quick-control-btn:hover {
    background: var(--nal-gray-200);
    border-color: var(--nal-gray-300);
    transform: translateY(-1px);
}

.nal-quick-control-btn:active {
    transform: translateY(0);
}

.nal-quick-control-btn.nel-focus-visible {
    outline: 3px solid var(--nal-secondary);
    outline-offset: 2px;
}

/* Download Card */
.nal-download-card {
    background: white;
    border-radius: var(--nal-border-radius);
    padding: 24px;
    box-shadow: var(--nal-shadow-lg);
    border: 1px solid var(--nal-gray-200);
}

.nal-download-card-header {
    margin-bottom: 20px;
}

.nal-download-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--nal-accent);
    margin: 0;
}

.nal-download-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 20px;
}

.nal-download-option {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 16px;
    align-items: center;
    padding: 20px;
    background: var(--nal-gray-100);
    border-radius: var(--nal-border-radius-sm);
    border: 2px solid transparent;
    transition: var(--nal-transition);
}

.nal-download-option:hover {
    border-color: var(--nal-gray-300);
    transform: translateY(-2px);
    box-shadow: var(--nal-shadow-md);
}

.nal-zip-option {
    background: linear-gradient(135deg, rgba(246, 220, 75, 0.1) 0%, rgba(246, 220, 75, 0.05) 100%);
    border-color: rgba(246, 220, 75, 0.2);
}

.nal-zip-option:hover {
    border-color: var(--nal-secondary);
}

.nal-option-icon {
    position: relative;
}

.nal-zip-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    background: var(--nal-secondary);
    color: var(--nal-accent);
    font-size: 10px;
    font-weight: 800;
    padding: 2px 6px;
    border-radius: 10px;
    line-height: 1;
}

.nal-option-content {
    min-width: 0;
}

.nal-option-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--nal-accent);
    margin: 0 0 6px 0;
}

.nal-option-description {
    font-size: 13px;
    color: var(--nal-gray-600);
    margin: 0 0 8px 0;
    line-height: 1.4;
}

.nal-option-stats {
    display: flex;
    gap: 8px;
}

.nal-stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--nal-gray-600);
    background: rgba(255, 255, 255, 0.8);
    padding: 4px 8px;
    border-radius: 12px;
}

.nal-download-option-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--nal-primary);
    color: white;
    border: none;
    border-radius: var(--nal-border-radius-sm);
    font-weight: 700;
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    transition: var(--nal-transition);
    white-space: nowrap;
}

.nal-download-option-btn:hover {
    background: #1a5276;
    transform: translateY(-2px);
    box-shadow: var(--nal-shadow-md);
    color: white;
}

.nal-zip-btn {
    background: var(--nal-secondary);
    color: var(--nal-accent);
}

.nal-zip-btn:hover {
    background: #e4c93e;
    color: var(--nal-accent);
}

.nal-download-option-btn.nel-focus-visible {
    outline: 3px solid var(--nal-secondary);
    outline-offset: 2px;
}

.nal-no-downloads {
    text-align: center;
    padding: 40px 20px;
}

.nal-no-downloads svg {
    margin-bottom: 16px;
}

.nal-no-downloads p {
    color: var(--nal-gray-600);
    margin: 0;
}

.nal-download-help {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: rgba(34, 108, 159, 0.05);
    border-radius: var(--nal-border-radius-sm);
    border-left: 4px solid var(--nal-primary);
}

.nal-download-help svg {
    color: var(--nal-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.nal-download-help p {
    font-size: 13px;
    color: var(--nal-gray-700);
    margin: 0;
    line-height: 1.5;
}

/* Share Card */
.nal-share-card {
    background: white;
    border-radius: var(--nal-border-radius);
    padding: 24px;
    box-shadow: var(--nal-shadow-md);
    border: 1px solid var(--nal-gray-200);
}

.nal-share-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--nal-accent);
    margin: 0 0 20px 0;
}

.nal-share-buttons {
    display: flex;
    gap: 12px;
}

.nal-share-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    background: var(--nal-gray-100);
    border: 2px solid var(--nal-gray-200);
    border-radius: var(--nal-border-radius-sm);
    color: var(--nal-gray-700);
    cursor: pointer;
    transition: var(--nal-transition);
}

.nal-share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--nal-shadow-md);
}

.nal-share-btn[data-share="facebook"]:hover {
    background: #1877F2;
    color: white;
    border-color: #1877F2;
}

.nal-share-btn[data-share="twitter"]:hover {
    background: #1DA1F2;
    color: white;
    border-color: #1DA1F2;
}

.nal-share-btn[data-share="linkedin"]:hover {
    background: #0077B5;
    color: white;
    border-color: #0077B5;
}

.nal-share-btn[data-share="copy"]:hover {
    background: var(--nal-primary);
    color: white;
    border-color: var(--nal-primary);
}

.nal-share-btn.nel-focus-visible {
    outline: 3px solid var(--nal-secondary);
    outline-offset: 2px;
}

/* Related Books Card */
.nal-related-books-card {
    background: white;
    border-radius: var(--nal-border-radius);
    padding: 24px;
    box-shadow: var(--nal-shadow-md);
    border: 1px solid var(--nal-gray-200);
}

.nal-related-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.nal-related-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--nal-accent);
    margin: 0;
}

.nal-view-all-link {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--nal-primary);
    text-decoration: none;
    transition: var(--nal-transition);
}

.nal-view-all-link:hover {
    color: var(--nal-accent);
    gap: 8px;
}

.nal-related-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nal-related-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    align-items: center;
    padding: 16px;
    background: var(--nal-gray-100);
    border-radius: var(--nal-border-radius-sm);
    text-decoration: none;
    color: inherit;
    transition: var(--nal-transition);
    border: 2px solid transparent;
}

.nal-related-item:hover {
    background: var(--nal-gray-200);
    border-color: var(--nal-gray-300);
    transform: translateX(4px);
}

.nal-related-info {
    min-width: 0;
}

.nal-related-book-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--nal-accent);
    margin: 0 0 4px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nal-related-author {
    font-size: 13px;
    color: var(--nal-gray-600);
    margin: 0;
}

.nal-related-arrow {
    color: var(--nal-gray-500);
    transition: var(--nal-transition);
}

.nal-related-item:hover .nal-related-arrow {
    color: var(--nal-primary);
    transform: translateX(4px);
}

/* Error State */
.nal-book-error {
    text-align: center;
    padding: 80px 20px;
    background: white;
    border-radius: var(--nal-border-radius);
    box-shadow: var(--nal-shadow-md);
    border: 1px solid var(--nal-gray-200);
}

.nal-book-error p {
    font-size: 18px;
    color: var(--nal-gray-700);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nal-book-layout-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .nal-book-main-title {
        font-size: 28px;
    }
    
    .nal-meta-detail {
        grid-template-columns: 120px 1fr;
    }
}

@media (max-width: 768px) {
    .nal-book-single-container {
        padding: 0 16px 32px;
    }
    
    .nal-book-main-header {
        padding: 24px;
    }
    
    .nal-book-title-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .nal-book-icon-circle {
        width: 60px;
        height: 60px;
    }
    
    .nal-book-main-title {
        font-size: 24px;
    }
    
    .nal-book-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nal-book-meta-section,
    .nal-book-description-section,
    .nal-book-player-card,
    .nal-download-card,
    .nal-share-card,
    .nal-related-books-card {
        padding: 20px;
    }
    
    .nal-section-heading {
        font-size: 18px;
    }
    
    .nal-meta-detail {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .nal-download-option {
        grid-template-columns: 1fr;
        gap: 12px;
        text-align: center;
    }
    
    .nal-option-icon {
        justify-self: center;
    }
    
    .nal-player-quick-controls {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .nal-book-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nal-book-main-title {
        font-size: 20px;
    }
    
    .nal-stat-number {
        font-size: 20px;
    }
    
    .nal-section-heading {
        font-size: 16px;
    }
    
    .nal-share-buttons {
        flex-wrap: wrap;
    }
    
    .nal-share-btn {
        flex: none;
        width: calc(50% - 6px);
    }
    
    .nal-download-option-btn {
        width: 100%;
        padding: 12px 16px;
    }
    
    .nal-related-item {
        grid-template-columns: 1fr auto;
    }
    
    .nal-related-icon {
        display: none;
    }
}

/* Print Styles */
@media print {
    .nal-book-action-column,
    .nal-book-breadcrumb-nav,
    .nal-player-quick-controls,
    .nal-share-card,
    .nal-download-help {
        display: none;
    }
    
    .nal-book-layout-grid {
        grid-template-columns: 1fr;
    }
    
    .nal-book-main-header {
        background: none;
        color: black;
        padding: 0;
        margin-bottom: 20px;
    }
    
    .nal-book-main-title {
        color: black;
    }
    
    .nal-platform-tag,
    .nal-book-stats-grid {
        background: none;
        border: 1px solid #ddd;
    }
    
    .nal-book-meta-section,
    .nal-book-description-section {
        box-shadow: none;
        border: 1px solid #ddd;
        margin-bottom: 20px;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .nal-book-main-header {
        background: var(--nal-primary);
    }
    
    .nal-download-option-btn,
    .nal-quick-control-btn,
    .nal-share-btn {
        border: 2px solid currentColor;
    }
    
    .nal-focus-visible {
        outline: 3px solid currentColor;
        outline-offset: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .nal-indicator-dot {
        animation: none;
    }
    
    .nal-quick-control-btn:hover,
    .nal-download-option:hover,
    .nal-download-option-btn:hover,
    .nal-share-btn:hover,
    .nal-related-item:hover {
        transform: none;
    }
}