/**
 * Fixperts - PDF 컨트롤 박스 스타일
 * 목차, 다운로드 버튼 등 PDF 컨트롤 관련 스타일
 */

/* 페이지 미리보기 썸네일 리스트 섹션 */
.pdf-thumbnails-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 20px;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
}

.pdf-thumbnails-container {
  flex: 1;
  max-width: 1200px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: auto;
  -webkit-overflow-scrolling: touch;
}

/* 썸네일 스크롤바 스타일 (데스크탑) */
.pdf-thumbnails-container::-webkit-scrollbar {
  height: 8px;
}

.pdf-thumbnails-container::-webkit-scrollbar-track {
  background: var(--color-bg-gray-200);
  border-radius: 4px;
}

.pdf-thumbnails-container::-webkit-scrollbar-thumb {
  background: var(--color-text-tertiary);
  border-radius: 4px;
  transition: background var(--transition-base);
}

.pdf-thumbnails-container::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-secondary);
}

.pdf-thumbnails-list {
  display: flex;
  gap: 10px;
  transition: transform 0.3s ease;
}

.pdf-thumbnail-item {
  flex-shrink: 0;
  width: 70px;
  height: 90px;
  border: 2px solid transparent;
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  background: var(--color-bg-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.pdf-thumbnail-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.pdf-thumbnail-item:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

.pdf-thumbnail-item.active {
  border-color: var(--color-secondary);
  border-width: 3px;
  box-shadow: var(--shadow-focus-secondary);
}

.pdf-thumbnail-placeholder {
  background: linear-gradient(
    90deg,
    var(--color-bg-secondary) 25%,
    var(--color-bg-tertiary) 50%,
    var(--color-bg-secondary) 75%
  );
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

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

.pdf-thumbnail-canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  /* 저해상도 썸네일을 부드럽게 표시 */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.pdf-thumbnail-page-num {
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.7);
  color: var(--color-text-light);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--border-radius-sm);
  pointer-events: none;
}

/* 썸네일 섹션 네비게이션 버튼 - 공용 클래스 사용 */
.pdf-thumbnails__nav-btn {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
}

/* 썸네일 네비게이션 버튼의 화살표 아이콘 크기 조정 */
.pdf-thumbnails__nav-btn .nav-arrow-btn-icon {
  width: 10px;
  height: 10px;
  border-left-width: 4px;
  border-bottom-width: 4px;
}

/* PDF 컨트롤 박스 */
.pdf-control-box {
  position: sticky;
  top: 0;
  background: var(--color-bg-primary);
  border: var(--border-standard);
  border-radius: var(--border-radius-md);
  padding: 5px 15px;
  margin-bottom: 18px;
  z-index: 100;
  width: 100%;
  display: block;
}

.pdf-control-box__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

/* 목차 섹션 */
.pdf-control-box__outline-section {
  position: relative;
  flex: 1;
}

/* 목차 버튼은 utilities.css의 btn-base + btn-sm + btn-secondary + btn-action 사용 */

.pdf-control-box__outline-icon {
  font-size: var(--font-size-base);
}

.pdf-control-box__outline {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-primary);
  border: var(--border-standard);
  border-radius: var(--border-radius-sm);
  margin-top: 8px;
  max-height: 400px;
  overflow-y: auto;
  display: none;
  z-index: 100;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.pdf-control-box__outline.show {
  display: block;
}

.pdf-control-box__outline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: var(--border-standard);
}

.pdf-control-box__outline-header h4 {
  margin: 0;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
}

.pdf-control-box__outline-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-text-tertiary);
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-base);
}

.pdf-control-box__outline-close:hover {
  color: var(--color-text-primary);
}

.pdf-control-box__outline-close:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

.pdf-control-box__outline-list {
  padding: 8px 0;
}

.pdf-control-box__outline-empty {
  padding: 20px;
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.pdf-control-box__outline-item {
  padding: 8px 16px;
  cursor: pointer;
  transition: background var(--transition-base);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.pdf-control-box__outline-item:hover {
  background: var(--color-bg-gray-50);
}

.pdf-control-box__outline-item:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: -2px;
  background: var(--color-bg-gray-50);
}

.pdf-control-box__outline-item--level-1 {
  padding-left: 16px;
}

.pdf-control-box__outline-item--level-2 {
  padding-left: 32px;
}

.pdf-control-box__outline-item--level-3 {
  padding-left: 48px;
}

.pdf-control-box__outline-item--level-4 {
  padding-left: 64px;
}

/* 다운로드 버튼은 utilities.css의 btn-base + btn-sm + btn-secondary + btn-action 사용 */

.pdf-control-box__download-icon {
  font-size: var(--font-size-base);
  line-height: 1;
}

/* 페이지 이동 섹션 */
.pdf-control-box__nav-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.pdf-control-box__nav-btn {
  background: var(--color-bg-gray-50);
  border: var(--border-standard);
  border-radius: var(--border-radius-sm);
  padding: 8px 12px;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-base);
  min-width: 40px;
}

.pdf-control-box__nav-btn:hover:not(:disabled) {
  background: var(--color-bg-gray-200);
  border-color: var(--color-border-hover);
}

.pdf-control-box__nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pdf-control-box__page-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pdf-control-box__page-input {
  width: 60px;
  padding: 6px 8px;
  border: var(--border-standard);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  text-align: center;
}

.pdf-control-box__page-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
}

/* 매뉴얼 섹션 - 통합 카드 */
.manual-section {
  background: var(--color-bg-primary);
  border-radius: var(--border-radius-md);
  border: var(--border-standard);
  width: 100%;
  display: block;
  overflow: hidden;
}

/* 매뉴얼 그리드 */
.manual-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 15px;
  margin-bottom: 30px;
}

.manual-card {
  border: var(--border-standard);
  border-radius: var(--border-radius-md);
  padding: 20px;
  transition: all var(--transition-base);
  cursor: pointer;
}

.manual-card:hover {
  border-color: var(--color-border-focus);
  box-shadow: 0 4px 12px rgba(249, 151, 29, 0.1);
  transform: translateY(-2px);
}

.manual-card__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.manual-card__icon {
  font-size: 32px;
}

.manual-card__title {
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--color-text-dark);
}

.manual-card__desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
  line-height: 1.5;
}

.manual-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.manual-card__download-btn {
  background: var(--color-secondary);
  color: var(--color-text-light);
  border: none;
  padding: 8px 16px;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  display: inline-block;
}

.manual-card__download-btn:hover {
  background: var(--color-secondary-hover);
}

/* =============================================================================
   모바일 반응형 스타일
   ============================================================================= */

/* 모바일 (768px 이하) */
@media (max-width: 768px) {
  /* 썸네일 섹션 모바일 최적화 */
  .pdf-thumbnails-section {
    padding: 0 10px;
    margin-bottom: 15px;
  }

  .pdf-thumbnails-container {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: auto;
  }

  .pdf-thumbnails-container::-webkit-scrollbar {
    height: 6px;
  }

  .pdf-thumbnails-container::-webkit-scrollbar-track {
    background: var(--color-bg-gray-200);
    border-radius: 3px;
  }

  .pdf-thumbnails-container::-webkit-scrollbar-thumb {
    background: var(--color-text-tertiary);
    border-radius: 3px;
    transition: background var(--transition-base);
  }

  .pdf-thumbnails-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
  }

  .pdf-thumbnails-list {
    gap: 8px;
    padding: 0 5px;
  }

  /* 썸네일 크기 축소 */
  .pdf-thumbnail-item {
    width: 50px;
    height: 65px;
  }

  /* 네비게이션 버튼 크기 조정 */
  .pdf-thumbnails__nav-btn {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
  }

  .pdf-thumbnails__nav-btn .nav-arrow-btn-icon {
    width: 12px;
    height: 12px;
    border-left-width: 3px;
    border-bottom-width: 3px;
  }

  /* PDF 컨트롤 박스 모바일 최적화 */
  .pdf-control-box {
    padding: 8px 12px;
    margin-bottom: 12px;
  }

  .pdf-control-box__content {
    flex-wrap: wrap;
    gap: 12px;
  }

  .pdf-control-box__nav-section {
    flex-wrap: wrap;
    gap: 8px;
  }

  .pdf-control-box__page-input {
    width: 50px;
    padding: 6px;
    font-size: var(--font-size-xs);
  }

  /* 매뉴얼 그리드 모바일 최적화 */
  .manual-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* 작은 모바일 (480px 이하) */
@media (max-width: 480px) {
  .pdf-thumbnails-section {
    padding: 0 5px;
    margin-bottom: 12px;
  }

  .pdf-thumbnails-list {
    gap: 6px;
    padding: 0 3px;
  }

  /* 썸네일 더 작게 */
  .pdf-thumbnail-item {
    width: 45px;
    height: 58px;
  }

  .pdf-thumbnail-page-num {
    font-size: 10px;
    padding: 1px 6px;
  }

  /* 네비게이션 버튼 더 작게 */
  .pdf-thumbnails__nav-btn {
    width: 28px;
    height: 28px;
  }

  .pdf-thumbnails__nav-btn .nav-arrow-btn-icon {
    width: 10px;
    height: 10px;
    border-left-width: 2.5px;
    border-bottom-width: 2.5px;
  }

  .pdf-control-box {
    padding: 6px 10px;
  }

  .pdf-control-box__content {
    gap: 8px;
  }

  .pdf-control-box__nav-btn {
    padding: 6px 10px;
    font-size: var(--font-size-sm);
    min-width: 36px;
  }
}