/* ========================================
   Ebooks Page Styles
   ======================================== */

.ebooks-hero {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.ebooks-search-row {
  display: flex;
  gap: 12px;
  max-width: 540px;
  margin: 32px auto 0;
}

.ebooks-search-input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  outline: none;
  transition: var(--transition);
}

.ebooks-search-input:focus {
  border-color: var(--accent-yellow);
  box-shadow: 0 0 0 3px rgba(240,180,41,0.1);
}

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

/* Ebook Page Grid */
.ebooks-page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}

.ebook-page-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.ebook-page-card:hover {
  border-color: rgba(240,180,41,0.35);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.ebook-page-cover {
  padding: 40px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
  min-height: 200px;
}

.ebook-cover-bg {
  position: absolute;
  inset: 0;
  opacity: 0.1;
}

.ebook-page-icon {
  font-size: 3.5rem;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.ebook-page-cover-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
}

.ebook-page-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.ebook-page-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  font-family: var(--font-display);
}

.ebook-page-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 18px;
}

.ebook-page-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.ebook-pages-count {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.ebook-topics {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.ebook-topic-tag {
  font-size: 0.7rem;
  background: rgba(240,180,41,0.06);
  border: 1px solid rgba(240,180,41,0.15);
  color: var(--accent-yellow);
  padding: 2px 8px;
  border-radius: 10px;
  font-family: var(--font-mono);
}

/* Ebook categories sidebar */
.ebooks-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 40px;
  align-items: start;
}

.ebooks-sidebar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.sidebar-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.sidebar-category-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.sidebar-cat-item:hover,
.sidebar-cat-item.active {
  background: rgba(240,180,41,0.08);
  color: var(--accent-yellow);
}

.sidebar-cat-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-card);
  padding: 1px 8px;
  border-radius: 10px;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .ebooks-layout {
    grid-template-columns: 1fr;
  }

  .ebooks-sidebar {
    position: static;
  }

  .sidebar-category-list {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar-cat-item {
    border: 1px solid var(--border-color);
  }

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

@media (max-width: 560px) {
  .ebooks-page-grid {
    grid-template-columns: 1fr;
  }
}