/* ==========================================
   AUTHOR-DETAIL.CSS - Author Detail Page Styles
   Page: author_detail.html
   Dependencies: core.css (must be loaded first)
   ========================================== */

/* ==========================================
   AUTHOR DETAIL PAGE - COMPREHENSIVE STYLES
   ========================================== */

/* Author Container */
.bk-author-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* Author Header */
.bk-author-header {
  background: linear-gradient(135deg, var(--background-white) 0%, #f8fafc 100%);
  padding: var(--space-10) var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.bk-author-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.bk-author-profile {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-6);
  align-items: start;
  margin-top: var(--space-6);
}

.bk-author-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--primary-color);
  box-shadow: var(--shadow-lg);
  flex-shrink: 0;
}

.bk-author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bk-avatar-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-3xl);
}

.bk-author-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.bk-author-name {
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  color: var(--text-color);
  margin: 0;
  font-weight: 700;
  line-height: 1.2;
}

.bk-author-title {
  font-size: var(--text-lg);
  color: var(--text-muted);
  margin: 0;
  font-style: italic;
  font-weight: 500;
}

.bk-author-stats {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

.bk-author-stat {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--background-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.bk-author-stat:hover {
  background: white;
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.bk-author-stat i {
  color: var(--primary-color);
  font-size: var(--text-lg);
}

.bk-stat-number {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-color);
}

.bk-stat-label {
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

.bk-author-bio {
  background: var(--background-light);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary-color);
  margin-top: var(--space-4);
}

.bk-author-bio p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.bk-author-links {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}

.bk-author-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--background-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: var(--transition);
}

.bk-author-link:hover {
  background: white;
  color: var(--primary-color);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.bk-author-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-end;
}

/* ==========================================
   AUTHOR HIGHLIGHTS SECTION
   ========================================== */

.bk-author-highlights {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  padding: var(--space-8);
}

.bk-section-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-color);
  margin: 0 0 var(--space-6) 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.bk-section-title i {
  color: var(--primary-color);
  font-size: var(--text-xl);
}

.bk-highlights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
}

.bk-highlight-card {
  background: var(--background-light);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
}

.bk-highlight-card:hover {
  background: white;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.bk-highlight-icon {
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.bk-highlight-card h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-color);
  margin: 0 0 var(--space-2) 0;
}

.bk-highlight-card p {
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.bk-highlight-year {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--primary-color);
  color: white;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
}

/* ==========================================
   FEATURED AUTHOR BOOKS SECTION
   ========================================== */

.bk-featured-author-books {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  padding: var(--space-8);
}

.bk-featured-carousel {
  position: relative;
  overflow: hidden;
}

.bk-carousel-container {
  display: flex;
  gap: var(--space-6);
  overflow-x: auto;
  scroll-behavior: smooth;
  padding-bottom: var(--space-4);
}

.bk-carousel-container::-webkit-scrollbar {
  height: 8px;
}

.bk-carousel-container::-webkit-scrollbar-track {
  background: var(--background-light);
  border-radius: var(--radius-sm);
}

.bk-carousel-container::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: var(--radius-sm);
}

.bk-carousel-controls {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-4);
}

.bk-carousel-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  font-size: var(--text-lg);
}

.bk-carousel-btn:hover {
  background: var(--primary-hover);
  transform: scale(1.1);
}

/* ==========================================
   AUTHOR BOOKS SECTION
   ========================================== */

.bk-author-books {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  padding: var(--space-8);
}

.bk-books-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.bk-book-count {
  font-size: var(--text-lg);
  color: var(--text-muted);
  font-weight: 400;
}

.bk-books-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.bk-filter-tabs {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.bk-filter-tab {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--background-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 500;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: var(--transition);
}

.bk-filter-tab:hover {
  background: var(--primary-light);
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.bk-filter-tab.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.bk-view-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.bk-sort-control {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.bk-sort-control label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 500;
}

.bk-sort-control select {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: white;
  color: var(--text-color);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: var(--transition);
}

.bk-sort-control select:focus {
  outline: none;
  border-color: var(--primary-color);
}

.bk-view-toggle {
  display: flex;
  gap: var(--space-1);
  background: var(--background-light);
  padding: var(--space-1);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.bk-view-btn {
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  font-size: var(--text-sm);
}

.bk-view-btn:hover {
  color: var(--primary-color);
}

.bk-view-btn.active {
  background: var(--primary-color);
  color: white;
}

.bk-books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.bk-no-books {
  text-align: center;
  padding: var(--space-10);
  color: var(--text-muted);
}

.bk-no-books-icon {
  font-size: var(--text-4xl);
  color: var(--text-light);
  margin-bottom: var(--space-4);
}

.bk-no-books h3 {
  font-size: var(--text-xl);
  color: var(--text-color);
  margin: 0 0 var(--space-2) 0;
}

.bk-no-books p {
  margin: 0;
  font-size: var(--text-base);
}

/* ==========================================
   AUTHOR BOOKS LIST VIEW
   ========================================== */

.bk-books-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.bk-author-book-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-6);
  padding: var(--space-6);
  background: var(--background-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

.bk-author-book-item:hover {
  background: white;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.bk-book-cover-small {
  width: 80px;
  height: 120px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.bk-book-cover-small img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bk-cover-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-xl);
}

.bk-book-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.bk-book-details h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-color);
  margin: 0;
  line-height: 1.3;
}

.bk-book-meta {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.bk-book-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.bk-book-meta i {
  color: var(--primary-color);
  font-size: var(--text-xs);
}

.bk-book-badges {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.bk-badge {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.bk-badge-free {
  background: #dcfce7;
  color: #15803d;
}

.bk-badge-price {
  background: #fef3c7;
  color: #d97706;
}

.bk-badge-featured {
  background: #fef3c7;
  color: #d97706;
}

.bk-badge-audio {
  background: #dbeafe;
  color: #2563eb;
}

.bk-book-description {
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.bk-book-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-end;
}

/* ==========================================
   AUTHOR TIMELINE SECTION
   ========================================== */

.bk-author-timeline {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  padding: var(--space-8);
}

.bk-timeline-container {
  position: relative;
  padding-left: var(--space-8);
}

.bk-timeline-container::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-light);
}

.bk-timeline-item {
  position: relative;
  margin-bottom: var(--space-8);
}

.bk-timeline-item:last-child {
  margin-bottom: 0;
}

.bk-timeline-marker {
  position: absolute;
  left: -28px;
  top: 0;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: var(--text-sm);
  border: 4px solid white;
  box-shadow: var(--shadow-sm);
}

.bk-timeline-year {
  font-size: var(--text-xs);
  font-weight: 700;
}

.bk-timeline-content {
  background: var(--background-light);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.bk-timeline-content h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-color);
  margin: 0 0 var(--space-2) 0;
}

.bk-timeline-content p {
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

/* ==========================================
   RELATED AUTHORS SECTION
   ========================================== */

.bk-related-authors {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  padding: var(--space-8);
}

.bk-authors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.bk-author-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--background-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.bk-author-card:hover {
  background: white;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.bk-author-card-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--primary-color);
  flex-shrink: 0;
}

.bk-author-card-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bk-author-card-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--text-lg);
}

.bk-author-card-info {
  flex: 1;
}

.bk-author-card-info h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-color);
  margin: 0 0 var(--space-1) 0;
}

.bk-author-card-title {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: 0 0 var(--space-2) 0;
  font-style: italic;
}

.bk-author-card-stats {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.bk-author-card-arrow {
  color: var(--primary-color);
  font-size: var(--text-lg);
  opacity: 0.6;
  transition: var(--transition);
}

.bk-author-card:hover .bk-author-card-arrow {
  opacity: 1;
  transform: translateX(2px);
}

/* ==========================================
   AUTHOR NEWSLETTER SECTION
   ========================================== */

.bk-author-newsletter {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.bk-author-newsletter::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
  background-size: 20px 20px;
}

.bk-newsletter-content {
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-8);
}

.bk-newsletter-content h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin: 0 0 var(--space-4) 0;
}

.bk-newsletter-content p {
  font-size: var(--text-lg);
  margin: 0 0 var(--space-6) 0;
  opacity: 0.9;
}

.bk-newsletter-form {
  max-width: 400px;
  margin: 0 auto;
}

.bk-newsletter-input {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.bk-newsletter-input input {
  flex: 1;
  padding: var(--space-4);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  background: white;
  color: var(--text-color);
}

.bk-newsletter-input input::placeholder {
  color: var(--text-muted);
}

.bk-newsletter-input button {
  padding: var(--space-4) var(--space-6);
  background: var(--secondary-color);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.bk-newsletter-input button:hover {
  background: var(--secondary-hover);
}

.bk-newsletter-privacy {
  color: white;
  opacity: 0.8;
  font-size: var(--text-sm);
}

.bk-newsletter-benefits {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

.bk-benefit-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: white;
  font-size: var(--text-sm);
  font-weight: 500;
}

.bk-benefit-item i {
  color: var(--secondary-color);
  font-size: var(--text-base);
}

/* ==========================================
   MODALS
   ========================================== */

.bk-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

.bk-modal-content {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 90%;
  max-height: 90%;
  overflow-y: auto;
}

.bk-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-light);
}

.bk-modal-header h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text-color);
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.bk-modal-close {
  font-size: var(--text-xl);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

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

.bk-modal-body {
  padding: var(--space-6);
}

.bk-modal-body p {
  margin: 0 0 var(--space-6) 0;
  color: var(--text-muted);
  line-height: 1.6;
}

.bk-follow-benefits {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.bk-modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

.bk-collection-summary {
  display: flex;
  justify-content: space-around;
  margin: var(--space-6) 0;
  padding: var(--space-6);
  background: var(--background-light);
  border-radius: var(--radius-md);
}

.bk-collection-stat {
  text-align: center;
}

.bk-collection-number {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--space-1);
}

.bk-collection-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================
   PAGINATION
   ========================================== */

.bk-pagination-container {
  display: flex;
  justify-content: center;
  margin-top: var(--space-8);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 768px) {
  .bk-author-container {
    padding: var(--space-4);
    gap: var(--space-6);
  }

  .bk-author-header {
    padding: var(--space-6);
  }

  .bk-author-profile {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    text-align: center;
  }

  .bk-author-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto;
  }

  .bk-author-stats {
    justify-content: center;
  }

  .bk-author-actions {
    align-items: center;
    width: 100%;
  }

  .bk-author-actions .bk-btn {
    width: 100%;
  }

  .bk-books-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .bk-books-controls {
    width: 100%;
  }

  .bk-filter-tabs {
    width: 100%;
    justify-content: center;
  }

  .bk-view-controls {
    flex-direction: column;
    gap: var(--space-3);
  }

  .bk-books-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-4);
  }

  .bk-author-book-item {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .bk-book-actions {
    align-items: center;
  }

  .bk-book-actions .bk-btn {
    width: 100%;
  }

  .bk-highlights-grid {
    grid-template-columns: 1fr;
  }

  .bk-authors-grid {
    grid-template-columns: 1fr;
  }

  .bk-newsletter-benefits {
    flex-direction: column;
    gap: var(--space-4);
  }

  .bk-newsletter-input {
    flex-direction: column;
  }

  .bk-modal-content {
    width: 95%;
  }
}

@media (max-width: 480px) {
  .bk-author-container {
    padding: var(--space-3);
  }

  .bk-author-header {
    padding: var(--space-4);
  }

  .bk-author-avatar {
    width: 80px;
    height: 80px;
  }

  .bk-author-stats {
    flex-direction: column;
    gap: var(--space-2);
  }

  .bk-author-stat {
    justify-content: center;
  }

  .bk-books-grid {
    grid-template-columns: 1fr;
  }

  .bk-filter-tabs {
    flex-direction: column;
  }

  .bk-filter-tab {
    text-align: center;
  }
}