/**
 * Fixperts - PDF 목차 사이드바 스타일
 * 왼쪽 고정 사이드바로 표시되는 목차
 */

/* 목차 사이드바 */
.pdf-outline-sidebar {
  position: fixed;
  left: -300px;
  top: 90px; /* 헤더 높이(약 70px) + 여백(20px) */
  bottom: 120px; /* 푸터 높이(약 100px) + 여백(20px) */
  width: 280px;
  background: var(--color-bg-primary);
  border: var(--border-standard);
  border-radius: var(--border-radius-md);
  z-index: 1000;
  transition: left 0.3s ease;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  max-height: calc(100vh - 210px); /* 전체 높이에서 헤더+푸터+여백 제외 */
}

.pdf-outline-sidebar.show {
  left: 20px;
}

.pdf-outline-sidebar__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 20px;
  border-bottom: var(--border-standard);
  background: var(--color-bg-secondary);
}

.pdf-outline-sidebar__header h4 {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

.pdf-outline-sidebar__close {
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
}

.pdf-outline-sidebar__close:hover {
  background-color: var(--color-bg-gray-100);
  color: var(--color-text-primary);
}

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

.pdf-outline-sidebar__content {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.pdf-control-box__outline-item {
  padding: 12px 16px;
  cursor: pointer;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-base);
  border-left: 3px solid transparent;
  display: block;
  text-decoration: none;
}

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

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

.pdf-control-box__outline-item.active {
  background-color: rgba(249, 151, 29, 0.1);
  border-left-color: var(--color-secondary);
  font-weight: 600;
}

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

.pdf-control-box__outline-item--level-2 {
  padding-left: 32px;
  font-size: var(--font-size-xs);
}

.pdf-control-box__outline-item--level-3 {
  padding-left: 48px;
  font-size: var(--font-size-xs);
}

.pdf-control-box__outline-item--level-4 {
  padding-left: 64px;
  font-size: var(--font-size-xs);
}

.pdf-outline-sidebar__empty {
  padding: 24px 16px;
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* PDF 컨트롤 버튼 그룹 (PDF 캔버스 위에 배치) */
.pdf-control-buttons {
  position: absolute;
  left: 20px;
  top: 20px;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 1px;
  background: rgba(255, 255, 255, 0.6);
  border: var(--border-standard);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  z-index: 200;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* 호버 시 완전히 표시 */
.pdf-viewer:hover .pdf-control-buttons,
.pdf-control-buttons:hover {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* 목차 토글 버튼 */
.pdf-outline-toggle-btn {
  padding: 8px 16px;
  background: transparent;
  border: none;
  border-radius: var(--border-radius-sm);
  display: none; /* 기본 숨김 */
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-primary);
}

.pdf-outline-toggle-btn.visible {
  display: flex; /* PDF 로드 후 표시 */
}

.pdf-outline-toggle-btn:hover {
  background: var(--color-bg-gray-50);
}

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

.pdf-outline-toggle-btn:disabled {
  display: none; /* 비활성화 시 완전히 숨김 */
  cursor: not-allowed;
  opacity: 0.5;
  pointer-events: none;
}

.pdf-outline-toggle-icon {
  font-size: 16px;
  color: var(--color-text-primary);
}

/* 확대/축소 버튼 */
.pdf-zoom-btn {
  padding: 6px;
  background: transparent;
  border: none;
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--color-text-primary);
  width: 32px;
  height: 32px;
}

/* 호버 시 버튼 배경 표시 */
.pdf-control-buttons:hover .pdf-zoom-btn:not(:disabled):hover {
  background: rgba(0, 0, 0, 0.05);
}

.pdf-zoom-btn:hover:not(:disabled) {
  background: var(--color-bg-gray-50);
}

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

.pdf-zoom-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.pdf-zoom-icon {
  width: 18px;
  height: 18px;
  color: var(--color-text-primary);
  flex-shrink: 0;
}

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

/* 모바일 (768px 이하) */
@media (max-width: 768px) {
  /* 확대/축소 버튼 그룹 모바일 최적화 */
  .pdf-control-buttons {
    left: 10px;
    top: 10px;
    padding: 1px;
    gap: 1px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
  }

  /* 호버 대신 터치 시 표시 */
  .pdf-control-buttons:active {
    background: rgba(255, 255, 255, 0.8);
  }

  /* 확대/축소 버튼 모바일에서 숨김 */
  .pdf-zoom-btn {
    display: none; /* 모바일에서 확대/축소 버튼 숨김 */
  }

  .pdf-zoom-icon {
    width: 15px;
    height: 15px;
  }
}

/* 작은 모바일 (480px 이하) */
@media (max-width: 480px) {
  /* 확대/축소 버튼 그룹 더 작게, 더 투명하게 */
  .pdf-control-buttons {
    left: 5px;
    top: 5px;
    padding: 0;
    gap: 0;
    background: rgba(255, 255, 255, 0.3);
  }

  /* 확대/축소 버튼 모바일에서 숨김 (768px 미디어 쿼리에서 이미 처리됨) */
  .pdf-zoom-btn {
    display: none; /* 모바일에서 확대/축소 버튼 숨김 */
  }

  .pdf-zoom-icon {
    width: 13px;
    height: 13px;
  }
}

/* =============================================================================
   매뉴얼 썸네일 목록 (SSR)
   ============================================================================= */
.pdf-sidebar__manual-list {
  padding: 16px;
  border-bottom: var(--border-standard);
}

.pdf-sidebar__manual-list-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin: 0 0 12px 0;
}

.pdf-sidebar__manual-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 2px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background-color: var(--color-white);
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 8px;
}

.pdf-sidebar__manual-item:last-child {
  margin-bottom: 0;
}

.pdf-sidebar__manual-item:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.pdf-sidebar__manual-item.active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.pdf-sidebar__manual-thumbnail {
  flex-shrink: 0;
  width: 60px;
  height: 80px;
  border-radius: var(--border-radius-xs);
  overflow: hidden;
  background-color: var(--color-bg-secondary);
}

.pdf-sidebar__manual-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pdf-sidebar__manual-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 32px;
  color: var(--color-text-tertiary);
}

.pdf-sidebar__manual-info {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  flex-grow: 1;
}

.pdf-sidebar__manual-type {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.pdf-sidebar__manual-lang {
  font-size: 12px;
  color: var(--color-text-secondary);
}