/* workbook-mobile.css — 학습지(workbook) 모바일 흐름 전용 */
/* 모듈화 원칙: 599px 이하 폰 폭에서만 모바일 스타일 활성. 600px 이상은 데스크톱 UI 유지. */

.mwb-print-orientation-hint {
  display: none;
}

#screen-workbook .mwb-mobile-only {
  display: none !important;
}

/* ==========================================================================
   폰 폭 레이아웃 — 학습지 화면 전용 모바일 레이어 활성
   사이클 1: 골격만. 데스크톱 컴포넌트 hide + 모바일 컨테이너 노출.
   사이클 2~5에서 모바일 컴포넌트 채움.
   ========================================================================== */
@media screen and (max-width: 599px) {
  .mwb-sheet-workbook-title {
    flex: 1;
    min-width: 0;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* 데스크톱 학습지 컴포넌트 hide (≤640px에서만) */
  /* .wbk-workbook-panel은 사이클 6-2에서 모바일 시트로 이동될 예정이라 .wbk-main 안에 있을 때만 hide */
  #screen-workbook .nav-bar,
  #screen-workbook .anon-save-banner,
  #screen-workbook .wbk-age-bar,
  #screen-workbook .wbk-main,
  #screen-workbook .wbk-workbook-page,
  #screen-workbook .wbk-main .wbk-word-panel,
  #screen-workbook .wbk-main .wbk-workbook-panel {
    display: none;
  }

  /* ========== Panel이 모바일 시트 안에 있을 때 override ========== */
  #mwbPreviewBody .wbk-workbook-panel {
    /* 사이드바 layout 해제 */
    position: static;
    top: auto;
    height: auto;
    max-height: none;
    overflow-y: visible;
    /* 시트 안에서는 카드 스타일 불필요 (시트가 자체 카드) */
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    /* 모바일에서 시트 안에 노출 */
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  /* 모바일 시트 안에서는 본앱 일부 컴포넌트 hide (데스크톱은 영향 0 — 시트 자체가 hidden) */
  #mwbPreviewBody .wb-add-slot,            /* "왼쪽에서 단어를 더 담아..." 박스 */
  #mwbPreviewBody .wbk-wb-back,            /* "← 뒤로" 버튼 */
  #mwbPreviewBody .wbk-wb-empty-state,     /* "왼쪽에서 단어를 골라주세요" 빈 상태 */
  #mwbPreviewBody .wbk-blank-notice {      /* "단어를 클릭하면 워크북이 만들어져요" 안내 */
    display: none !important;
  }

  /* 본앱 좌측 위로가기 버튼(`#screenScrollTopBtn`)은 모바일에서 hide.
     모바일은 자체 위로가기 버튼(우하단 `.mwb-scroll-top`) 사용. */
  #screenScrollTopBtn {
    display: none !important;
  }

  /* 미리보기 페이지 1열 (모바일 한정) — 본앱 데스크톱 2열 grid를 단일 컬럼으로 */
  #mwbPreviewBody .wbk-mock-pages {
    grid-template-columns: 1fr;
  }

  #mwbPreviewBody .wbk-wb-detail-bar {
    top: 0;
    z-index: 22;
    justify-content: flex-end;
    margin-bottom: 0;
    padding: 8px 10px;
    border-radius: 0;
  }

  #mwbPreviewBody .wbk-wb-detail-title {
    display: none;
  }

  #mwbPreviewBody .mwb-print-orientation-hint {
    display: block;
    position: sticky;
    top: 48px;
    z-index: 21;
    margin: 0 0 8px;
    padding: 8px 10px;
    border-left: 3px solid var(--teal-dark);
    border-radius: 8px;
    background: #eef8fa;
    color: var(--teal-dark);
    font-size: 12px;
    font-weight: 800;
    line-height: 1.4;
  }

  /* 모바일 컨테이너 노출 */
  #screen-workbook .mwb-mobile-only {
    display: block !important;
  }

  /* placeholder (사이클 5에서 빈 상태로 교체) */
  .mwb-mobile-only .mwb-cycle1-placeholder {
    padding: 60px 24px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
  }

  /* ========== 상단 영역 (줄1 + 줄2 한 헤더로 시각 통합, 컴팩트) ========== */
  /* 줄 1 — 뒤로가기 + 카운트 + 초기화 (sticky) */
  .mwb-mobile-only .mwb-top-stat {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    padding-top: calc(6px + var(--safe-top));
    background: var(--bg-white);
  }
  .mwb-mobile-only .mwb-top-back {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 22px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 50%;
  }
  .mwb-mobile-only .mwb-top-back .m-home-icon {
    width: 24px;
    height: 24px;
  }
  .mwb-mobile-only .mwb-top-back:active { background: var(--bg-cream); }

  /* 줄 2 — 검색바 (sticky, 줄 1과 같은 흰 배경으로 통합) */
  .mwb-mobile-only .mwb-search {
    position: sticky;
    top: calc(44px + var(--safe-top)); /* 상단 줄 1 높이 (6 + 32 + 6) */
    z-index: 8;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 2px 12px 8px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
  }
  .mwb-mobile-only .mwb-search-icon {
    flex-shrink: 0;
    color: var(--text-disabled);
    font-size: 16px;
    padding-left: 4px;
  }
  .mwb-mobile-only .mwb-search-input {
    flex: 1;
    border: 1px solid var(--border);
    outline: none;
    background: var(--bg-white);
    border-radius: var(--radius-full);
    font-size: 16px;     /* 가상 키보드 자동 줌인 방지 */
    color: var(--text-primary);
    min-width: 0;
    padding: 6px 14px;
    height: 34px;
  }
  .mwb-mobile-only .mwb-search-input::placeholder {
    color: var(--text-disabled);
  }

  /* ========== 검색·순위 좌우 분할 (m-C') ========== */
  .mwb-mobile-only .mwb-search-split {
    position: sticky;
    top: calc(44px + var(--safe-top)); /* 상단 줄 1 높이와 동일 */
    z-index: 8;
    display: flex;
    align-items: stretch;
    gap: 8px;
    padding: 4px 12px 10px;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-light);
  }
  .mwb-mobile-only .mwb-search-split[hidden] { display: none !important; }

  .mwb-mobile-only .mwb-split-half {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
    padding: 4px 10px;
    background: var(--bg-cream);
    border: 1px solid var(--border);
    border-radius: 10px;
  }
  .mwb-mobile-only .mwb-split-half-search {
    position: relative;
  }
  /* 분할선 제거 — 두 박스가 gap으로 명확히 떨어져 있음 */
  .mwb-mobile-only .mwb-split-divider {
    display: none;
  }
  .mwb-mobile-only .mwb-split-label {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    line-height: 1.2;
  }
  .mwb-mobile-only .mwb-split-search-input {
    border: none;
    outline: none;
    background: transparent;
    font-size: 16px; /* 가상 키보드 자동 줌인 방지 */
    font-family: inherit;
    color: var(--text-primary);
    width: 100%;
    padding: 0 30px 0 0;
    height: 22px;
    min-width: 0;
  }
  .mwb-mobile-only .mwb-split-search-input::placeholder {
    color: var(--text-disabled);
  }
  .mwb-mobile-only .mwb-split-search-clear {
    position: absolute;
    right: 8px;
    bottom: 6px;
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    background: rgba(0,0,0,0.06);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    padding: 0;
    font-family: inherit;
  }
  .mwb-mobile-only .mwb-split-search-clear[hidden] {
    display: none !important;
  }
  .mwb-mobile-only .mwb-split-priority-trigger {
    appearance: none;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 0;
    height: 22px;
    width: 100%;
    text-align: left;
  }
  .mwb-mobile-only .mwb-split-priority-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #94A3B8;
    flex-shrink: 0;
  }
  .mwb-mobile-only .mwb-split-priority-text {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .mwb-mobile-only .mwb-split-priority-arrow {
    margin-left: auto;
    font-size: 9px;
    color: var(--text-secondary);
    opacity: 0.7;
    flex-shrink: 0;
  }
  /* 활성 우선순위 (전체 외) — 트리거 색상 강조 */
  .mwb-mobile-only .mwb-split-priority-trigger[data-priority="1"] { color: #B13636; }
  .mwb-mobile-only .mwb-split-priority-trigger[data-priority="1"] .mwb-split-priority-dot { background: #D84848; }
  .mwb-mobile-only .mwb-split-priority-trigger[data-priority="2"] { color: #B47108; }
  .mwb-mobile-only .mwb-split-priority-trigger[data-priority="2"] .mwb-split-priority-dot { background: #E8A020; }
  .mwb-mobile-only .mwb-split-priority-trigger[data-priority="3"] { color: #4E8A7F; }
  .mwb-mobile-only .mwb-split-priority-trigger[data-priority="3"] .mwb-split-priority-dot { background: #7AB5A8; }

  /* ========== 우선순위 시트 옵션 리스트 ========== */
  .mwb-mobile-only .mwb-priority-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .mwb-mobile-only .mwb-priority-option {
    appearance: none;
    border: 1.5px solid var(--border);
    background: var(--bg-white);
    font-family: inherit;
    text-align: left;
    padding: 14px 16px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-secondary);
    width: 100%;
  }
  .mwb-mobile-only .mwb-priority-option-dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: #94A3B8;
    flex-shrink: 0;
  }
  .mwb-mobile-only .mwb-priority-option[data-priority="1"] { color: #B13636; }
  .mwb-mobile-only .mwb-priority-option[data-priority="1"] .mwb-priority-option-dot { background: #D84848; }
  .mwb-mobile-only .mwb-priority-option[data-priority="2"] { color: #B47108; }
  .mwb-mobile-only .mwb-priority-option[data-priority="2"] .mwb-priority-option-dot { background: #E8A020; }
  .mwb-mobile-only .mwb-priority-option[data-priority="3"] { color: #4E8A7F; }
  .mwb-mobile-only .mwb-priority-option[data-priority="3"] .mwb-priority-option-dot { background: #7AB5A8; }
  .mwb-mobile-only .mwb-priority-option-meta {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-disabled);
    font-weight: 600;
  }
  .mwb-mobile-only .mwb-priority-option.is-selected {
    border-width: 2px;
    padding: 13px 15px;
  }
  .mwb-mobile-only .mwb-priority-option.is-selected[data-priority="0"] { background: rgba(148,163,184,0.12); border-color: #94A3B8; color: #475569; }
  .mwb-mobile-only .mwb-priority-option.is-selected[data-priority="1"] { background: rgba(216,72,72,0.08); border-color: #D84848; }
  .mwb-mobile-only .mwb-priority-option.is-selected[data-priority="2"] { background: rgba(232,160,32,0.10); border-color: #E8A020; }
  .mwb-mobile-only .mwb-priority-option.is-selected[data-priority="3"] { background: rgba(122,181,168,0.14); border-color: #7AB5A8; }

  /* ========== 카테고리 섹션 (단어 그리드 그루핑) ========== */
  .mwb-mobile-only .mwb-cat-section {
    padding: 0;
  }
  .mwb-mobile-only .mwb-cat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 16px 16px 6px;
    font-size: 17px;
    font-weight: 800;
    color: var(--text-primary);
  }
  .mwb-mobile-only .mwb-cat-header-right {
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }
  .mwb-mobile-only .mwb-cat-header-count {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
  }
  /* 카테고리 모두 담기/해제 칩 — 작은 무채색, 카드보다 시각 강도 낮음 */
  .mwb-mobile-only .mwb-cat-add-chip {
    flex-shrink: 0;
    padding: 4px 11px;
    background: var(--bg-cream);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.4;
    cursor: pointer;
  }
  .mwb-mobile-only .mwb-cat-add-chip:active { background: var(--bg-accent-light); }
  .mwb-mobile-only .mwb-cat-add-chip.is-all-selected {
    color: var(--text-secondary);
  }

  /* ========== 단어 카드 그리드 (3열) ========== */
  .mwb-mobile-only .mwb-word-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    padding: 4px 12px 8px;
  }
  .mwb-cat-section:last-child .mwb-word-grid {
    padding-bottom: 24px;
  }
  .mwb-mobile-only .mwb-word-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 6px 4px 8px;
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    text-align: center;
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.08s ease;
    cursor: pointer;
  }
  .mwb-mobile-only .mwb-word-card:active { transform: scale(0.98); }
  .mwb-mobile-only .mwb-word-card.is-selected {
    border-color: var(--primary);
    background: var(--bg-accent-light);
  }
  .mwb-mobile-only .mwb-word-img-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    background: var(--bg-cream);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-size: 32px;
    line-height: 1;
  }
  .mwb-mobile-only .mwb-word-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
  }
  .mwb-mobile-only .mwb-word-name {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    word-break: keep-all;
    overflow-wrap: anywhere;
  }
  .mwb-mobile-only .mwb-word-priority {
    position: absolute;
    top: 5px;
    right: 5px;
    padding: 3px 7px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    z-index: 1;
  }
  .mwb-mobile-only .mwb-word-priority.is-p1 { background: #FFE5E5; color: #D84848; }
  .mwb-mobile-only .mwb-word-priority.is-p2 { background: #FFF1DC; color: #E8A020; }
  .mwb-mobile-only .mwb-word-priority.is-p3 { background: #E3F2EE; color: #7AB5A8; }
  .mwb-mobile-only .mwb-word-card.is-selected .mwb-word-check {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 800;
    z-index: 1;
  }
  .mwb-mobile-only .mwb-word-card:not(.is-selected) .mwb-word-check { display: none; }

  /* 검색 모드 카드 연령 칩 */
  .mwb-mobile-only .mwb-word-age {
    display: inline-block;
    margin-top: 2px;
    padding: 1px 6px;
    background: var(--bg-cream);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary);
    line-height: 1.3;
  }

  /* 검색 결과 없음 */
  .mwb-mobile-only .mwb-search-empty {
    padding: 40px 24px;
    text-align: center;
    color: var(--text-disabled);
    font-size: 14px;
  }

  /* ========== 활동지 시트 안 카드 + 단계 칩 ========== */
  .mwb-activity-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px 24px;
  }
  .mwb-activity-card-wrap {
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
  }
  .mwb-activity-card-wrap:has(.mwb-activity-level.is-selected) {
    border-color: var(--primary);
  }
  .mwb-activity-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: transparent;
    border: none;
    text-align: left;
    width: 100%;
  }
  .mwb-activity-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--bg-cream);
    font-size: 24px;
  }
  .mwb-activity-body {
    flex: 1;
    display: flex;
    flex-direction: column;
  }
  .mwb-activity-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
  }
  .mwb-activity-desc {
    margin-top: 2px;
    font-size: 12px;
    color: var(--text-secondary);
  }
  .mwb-activity-levels {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0 14px 12px 70px;
  }
  .mwb-activity-level {
    padding: 6px 12px;
    background: var(--bg-cream);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    min-height: 32px;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
  }
  .mwb-activity-level:active { background: var(--bg-accent-light); }
  .mwb-activity-level.is-selected {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
  }

  /* ========== 연령 시트 안 카드 ========== */
  .mwb-age-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 16px 24px;
  }
  .mwb-age-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-white);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    min-height: 56px;
    text-align: left;
    cursor: pointer;
    width: 100%;
  }
  .mwb-age-card:active { background: var(--bg-cream); }
  .mwb-age-card.is-selected {
    border-color: var(--primary);
    background: var(--bg-accent-light);
  }
  .mwb-age-card-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
  }
  .mwb-age-card.is-selected .mwb-age-card-name { color: var(--primary); }
  .mwb-age-card-meta {
    display: block;
    margin-top: 2px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
  }
  .mwb-age-card-check {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 800;
  }
  .mwb-age-card.is-selected .mwb-age-card-check {
    display: inline-flex;
  }

  /* ========== 본문 padding-bottom (하단 독 가려짐 방지) ========== */
  .mwb-mobile-only {
    padding-bottom: calc(96px + var(--safe-bottom));
  }

  /* ========== 위로가기 버튼 ========== */
  .mwb-scroll-top {
    position: fixed;
    right: 12px;
    bottom: calc(80px + var(--safe-bottom) + 12px);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-white);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-secondary);
    z-index: 15;
    line-height: 1;
    cursor: pointer;
  }
  .mwb-scroll-top.is-visible { display: inline-flex; }
  .mwb-scroll-top:active { background: var(--bg-cream); }

  /* ========== 카운트 (상단 줄 1 가운데, 큰 숫자) ========== */
  .mwb-print-count {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    line-height: 1;
    user-select: none;
  }
  .mwb-count-num {
    display: inline-flex;
    align-items: baseline;
    gap: 5px;
  }
  .mwb-count-num b {
    font-size: 22px;
    font-weight: 800;
    color: var(--teal-dark);
    line-height: 1;
  }
  .mwb-count-num span {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
  }
  .mwb-print-count.is-full .mwb-count-num b { color: #D84848; }

  /* 담은것만 토글 (상단바 카운트 옆) */
  .mwb-sel-toggle {
    flex: none;
    padding: 5px 10px;
    font-size: 12px;
    gap: 4px;
    min-height: 0;
  }
  .mwb-sel-toggle .wbk-selected-toggle-pin { font-size: 11px; }

  /* 담은것만 모드 중 검색·순위·dock 이동 트리거 비활성 (미리보기 CTA는 유지) */
  body.wbk-selected-only .mwb-search-split,
  body.wbk-selected-only .mwb-bottom-dock > .mwb-dock-trigger {
    opacity: 0.45;
    pointer-events: none;
  }

  /* 모바일 담은것만 안내 띠 */
  .mwb-selected-banner {
    margin: 0 12px 12px;
    font-size: 12.5px;
  }
  .mwb-selected-banner .wbk-selected-banner-back {
    padding: 5px 10px;
    font-size: 11.5px;
  }

  /* ========== 초기화 (상단 줄 1 우측, 컴팩트 아이콘 버튼) ========== */
  .mwb-print-clear {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #D84848;
    border: 1px solid #D84848;
    border-radius: var(--radius-md);
    color: #fff;
    cursor: pointer;
    padding: 0;
  }
  .mwb-print-clear svg {
    width: 16px;
    height: 16px;
  }
  .mwb-print-clear:active { background: #B83838; border-color: #B83838; }
  .mwb-print-clear[disabled] {
    background: var(--bg-cream);
    border-color: var(--border);
    color: var(--text-disabled);
    opacity: 0.6;
    cursor: not-allowed;
  }

  /* ========== 하단 독 — 연령 · 활동지 · 미리보기 (3등분, 모노톤) ========== */
  .mwb-bottom-dock {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 20;
    display: flex;
    align-items: stretch;
    gap: 8px;
    padding: 12px 14px 16px;
    padding-bottom: calc(16px + var(--safe-bottom));
    background: var(--bg-white);
    border-top: 1px solid var(--border-light);
  }
  .mwb-bottom-dock > .mwb-dock-trigger,
  .mwb-bottom-dock > .mwb-print-cta {
    flex: 1 1 0;
    min-width: 0;
  }

  /* 공통 — 브랜드 청록 솔리드 (3개 통일, 헤더 결과 일치) */
  .mwb-dock-trigger,
  .mwb-print-cta {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 56px;
    padding: 8px;
    background: var(--teal-dark);
    border: 1px solid var(--teal-dark);
    border-radius: var(--radius-md);
    color: #fff;
    cursor: pointer;
    text-align: center;
    line-height: 1;
  }
  .mwb-dock-trigger:active,
  .mwb-print-cta:active { filter: brightness(0.92); }

  .mwb-dock-trigger.is-prompt-target {
    position: relative;
    border-color: #FFD45A;
    box-shadow: 0 0 0 3px rgba(255, 212, 90, 0.55), 0 8px 18px rgba(15, 93, 110, 0.24);
    animation: mwb-prompt-pulse 1.25s ease-in-out infinite;
  }
  .mwb-dock-trigger.is-prompt-target .mwb-dock-trigger-label,
  .mwb-dock-trigger.is-prompt-target .mwb-dock-trigger-arrow {
    opacity: 1;
  }
  @keyframes mwb-prompt-pulse {
    0%, 100% {
      transform: translateY(0);
      box-shadow: 0 0 0 3px rgba(255, 212, 90, 0.5), 0 8px 18px rgba(15, 93, 110, 0.22);
    }
    50% {
      transform: translateY(-3px);
      box-shadow: 0 0 0 5px rgba(255, 212, 90, 0.72), 0 12px 22px rgba(15, 93, 110, 0.3);
    }
  }
  @media (prefers-reduced-motion: reduce) {
    .mwb-dock-trigger.is-prompt-target {
      animation: none;
    }
  }

  .mwb-print-cta {
    font-size: 15px;
    font-weight: 800;
    white-space: nowrap;
  }

  .mwb-dock-trigger-label {
    font-size: 11px;
    font-weight: 600;
    opacity: 0.7;
    line-height: 1;
  }
  .mwb-dock-trigger-value {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    font-weight: 800;
    line-height: 1.1;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .mwb-dock-trigger-value.is-empty {
    font-weight: 700;
    opacity: 0.85;
  }
  .mwb-dock-trigger-arrow {
    font-size: 9px;
    opacity: 0.7;
  }

  /* ========== 초기화 확인 모달 (자체 모달, native confirm 안 씀) ========== */
  .mwb-confirm-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 50;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
  }
  .mwb-confirm-backdrop.is-open { display: flex; }
  .mwb-confirm-box {
    width: 100%;
    max-width: 320px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 24px 20px 16px;
    text-align: center;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
  }
  .mwb-confirm-title {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
  }
  .mwb-confirm-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
  }
  .mwb-confirm-btns {
    display: flex;
    gap: 8px;
  }
  .mwb-confirm-btns button {
    flex: 1;
    min-height: 48px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 700;
    border: 1px solid transparent;
    cursor: pointer;
  }
  .mwb-confirm-cancel {
    background: var(--bg-cream);
    border-color: var(--border);
    color: var(--text-secondary);
  }
  .mwb-confirm-cancel:active { background: var(--border-light); }
  .mwb-confirm-confirm {
    background: #D84848;
    border-color: #D84848;
    color: #fff;
  }
  .mwb-confirm-confirm:active { background: #B83838; border-color: #B83838; }

  /* ========== 활동지 미선택 빈 상태 (가운데 정렬, 손가락이 dock 가리킴) ========== */
  .mwb-empty-pick {
    /* 줄1·2(약 110px) + dock(약 90px) 사이 본문 영역 안에서 가운데 정렬 */
    min-height: calc(100vh - 220px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px;
    gap: 14px;
  }
  .mwb-empty-icon {
    width: 80px;
    height: 80px;
    /* 활동지 trigger가 하단 독으로 이동했으니 손화살표는 아래 방향(180deg 회전) */
    animation: mwb-point-down 1.6s ease-in-out infinite;
  }
  @keyframes mwb-point-down {
    0%, 100% { transform: rotate(180deg) translateY(0); }
    50% { transform: rotate(180deg) translateY(-10px); }
  }
  .mwb-empty-title {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.4;
  }
  .mwb-empty-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
  }

  /* ========== 미리보기 시트 안 A4 페이지 (시안 결: 가로 mockup, 단어 chunk → 페이지 N장) ========== */
  .mwb-preview {
    padding: 16px 12px 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .mwb-a4 {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    padding: 12px;
    aspect-ratio: 1.414 / 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }
  .mwb-a4-header {
    text-align: center;
    font-size: 13px;
    font-weight: 800;
    color: var(--text-primary);
    padding-bottom: 6px;
    border-bottom: 1px dashed var(--border);
  }
  .mwb-a4-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
    overflow: hidden;
  }
  .mwb-a4-grid-2 { grid-template-columns: repeat(2, 1fr); }
  .mwb-a4-slot {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    border: 1px solid var(--border-light);
    border-radius: 4px;
    padding: 4px;
  }
  .mwb-a4-slot img {
    max-width: 100%;
    max-height: 60%;
    object-fit: contain;
  }
  .mwb-a4-slot-name {
    font-size: 9px;
    color: var(--text-secondary);
  }
  .mwb-a4-slot-empty { opacity: 0.25; }
  .mwb-a4-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    font-size: 13px;
    color: var(--text-disabled);
    text-align: center;
    padding: 20px;
  }
}

/* ==========================================================================
   보존된 넓은 모바일 보조 스타일 — 600px 이상 정책에서는 컨테이너가 숨겨짐
   ========================================================================== */
@media screen and (min-width: 600px) and (max-width: 899px) {
  .mwb-mobile-only #mwbWordGrid {
    max-width: 980px;
    margin: 0 auto;
    padding: 8px 20px 24px;
  }
  .mwb-mobile-only .mwb-word-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
    padding: 6px 0 12px;
  }
  .mwb-mobile-only .mwb-cat-header {
    padding: 18px 0 8px;
  }
  .mwb-mobile-only .mwb-bottom-dock {
    left: 50%;
    right: auto;
    width: min(920px, calc(100vw - 32px));
    transform: translateX(-50%);
    border-radius: 18px 18px 0 0;
  }
  #mwbPreviewBody {
    padding-inline: 18px;
  }
}

/* ==========================================================================
   600px 이상 데스크톱 환경 — 모바일 컨테이너 hide (안전장치)
   ========================================================================== */
@media (min-width: 600px) {
  #screen-workbook .mwb-mobile-only {
    display: none !important;
  }
}

/* ==========================================================================
   인쇄 — 모바일 컨테이너 안에서 미리보기 시트만 남기고 나머지 다 숨김.
          시트 자체 release는 mobile-sheet.css의 @media print.
          활동지·연령 시트도 인쇄 시 hide.
   ========================================================================== */
@media print {
  /* 모바일 컨테이너 자체는 노출(시트 통과시키기 위해) */
  #screen-workbook .mwb-mobile-only {
    display: block !important;
  }
  /* 모바일 컨테이너의 직속 자식 중 미리보기 시트가 아닌 모든 것은 숨김.
     포함 대상: 모바일 헤더(.mwb-m-header), 활동지 트리거, 검색바, 단어 그리드(#mwbWordGrid),
                위로가기 버튼, 하단 독(.mwb-bottom-dock), 자체 확인 모달,
                활동지 시트·연령 시트 + 그들의 백드롭. */
  #screen-workbook .mwb-mobile-only > *:not(#mwbPreviewSheet) {
    display: none !important;
  }
  /* 미리보기 시트 본문 안 panel 외 잡 요소 한 번 더 hide */
  #mwbPreviewBody .wb-add-slot,
  #mwbPreviewBody .wbk-wb-back,
  #mwbPreviewBody .wbk-wb-empty-state,
  #mwbPreviewBody .mwb-print-orientation-hint,
  #mwbPreviewBody .wbk-blank-notice {
    display: none !important;
  }
}