/* =====================================================================
   드림하이 음악학원 - 공통 스타일 (COM-01)
   PC 관리 화면 기준, 768px 미만은 메뉴 접기 + 본문 한 열
   ===================================================================== */
:root {
    --c-primary: #1f3a68;
    --c-primary-hover: #16294a;
    --c-accent: #3b6fd1;
    --c-text: #1d2433;
    --c-muted: #5f6b7d;
    --c-border: #d6dbe3;
    --c-bg: #f4f6f9;
    --c-surface: #ffffff;
    --c-info-bg: #eef3fc;   --c-info-bd: #b9cdf0;
    --c-warn-bg: #fff6e5;   --c-warn-bd: #f0cf8a;
    --c-error-bg: #fdeeee;  --c-error-bd: #eab3b3;  --c-error: #b42318;
    --c-empty-bg: #f7f8fa;
    --radius: 8px;
    --gap: 16px;
    --focus: 0 0 0 3px rgba(59, 111, 209, .45);
    font-family: "Pretendard", "Malgun Gothic", "Apple SD Gothic Neo", system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--c-bg); color: var(--c-text); font-size: 15px; line-height: 1.6; }
a { color: var(--c-accent); }
:focus-visible { outline: none; box-shadow: var(--focus); border-radius: 4px; }

[hidden] { display: none !important; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: 8px; top: -48px; z-index: 100; background: var(--c-primary); color: #fff; padding: 8px 12px; border-radius: var(--radius); }
.skip-link:focus { top: 8px; }
.muted { color: var(--c-muted); font-size: 13px; }

/* ---- 상단 영역 ---- */
.topbar { background: var(--c-primary); color: #fff; }
.topbar-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 56px; display: flex; align-items: center; gap: 12px; }
.brand { color: #fff; font-weight: 700; font-size: 18px; text-decoration: none; }
.user-area { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: 14px; }
.role-badge { display: inline-block; margin-left: 4px; padding: 0 8px; border-radius: 999px; background: rgba(255,255,255,.18); font-size: 12px; }
.inline-form { display: inline; margin: 0; }
.btn-link { background: none; border: 0; color: #fff; text-decoration: underline; cursor: pointer; font: inherit; padding: 4px; }

/* ---- 주 메뉴 ---- */
.mainnav { background: var(--c-surface); border-bottom: 1px solid var(--c-border); }
.mainnav ul { max-width: 1200px; margin: 0 auto; padding: 0 20px; list-style: none; display: flex; gap: 4px; }
.mainnav a { display: block; padding: 12px 16px; color: var(--c-text); text-decoration: none; border-bottom: 3px solid transparent; font-weight: 500; }
.mainnav a:hover { color: var(--c-primary); }
.mainnav a.active { color: var(--c-primary); border-bottom-color: var(--c-primary); font-weight: 700; }
.menu-toggle { display: none; }

/* ---- 본문 (① 제목 ② 필터 ③ 본문 ④ 동작) ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 24px 20px 40px; }
.container-narrow { max-width: 440px; padding-top: 56px; }
.page-head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px; margin-bottom: var(--gap); }
.page-head h1 { margin: 0; font-size: 22px; }
.filters { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: var(--gap); margin-bottom: var(--gap); }
.page-body { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--radius); padding: 20px; }
.page-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: var(--gap); }
.summary-line { margin: 0 0 var(--gap); }

/* ---- 버튼 ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-height: 40px; padding: 8px 18px; border-radius: var(--radius); border: 1px solid transparent; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-hover); }
.btn-secondary { background: var(--c-surface); color: var(--c-primary); border-color: var(--c-border); }
.btn-secondary:hover { border-color: var(--c-primary); }
.btn-block { width: 100%; }
.btn[disabled], .btn[aria-busy="true"] { opacity: .65; cursor: progress; }

/* ---- 입력 ---- */
.form-stack { display: flex; flex-direction: column; gap: var(--gap); }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-weight: 600; font-size: 14px; }
.field input, .field select, .field textarea { font: inherit; padding: 10px 12px; border: 1px solid var(--c-border); border-radius: var(--radius); background: #fff; min-height: 44px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--c-accent); box-shadow: var(--focus); outline: none; }
.field .input-validation-error { border-color: var(--c-error); }
.field-error { color: var(--c-error); font-size: 13px; }
.field-error:empty { display: none; }

/* ---- 안내 (POL-02) ---- */
.notice { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding: 14px 16px; border: 1px solid; border-radius: var(--radius); margin-bottom: var(--gap); }
.notice:last-child { margin-bottom: 0; }
.notice p { margin: 0; }
.notice-info  { background: var(--c-info-bg);  border-color: var(--c-info-bd); }
.notice-warning { background: var(--c-warn-bg); border-color: var(--c-warn-bd); }
.notice-error { background: var(--c-error-bg); border-color: var(--c-error-bd); color: var(--c-error); }
.notice-empty { background: var(--c-empty-bg); border-color: var(--c-border); border-style: dashed; justify-content: center; text-align: center; flex-direction: column; padding: 32px 16px; }

/* ---- 로그인 (AUTH-01) ---- */
.is-anon .page-body { padding: 0; border: 0; background: none; }
.login-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: 12px; padding: 32px 28px; box-shadow: 0 6px 24px rgba(31, 58, 104, .08); }
.login-title { margin: 0 0 20px; font-size: 20px; text-align: center; }

/* ---- 작은 버튼, 배지 ---- */
.btn-sm { min-height: 32px; padding: 4px 12px; font-size: 13px; }
.badge { display: inline-block; padding: 1px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; border: 1px solid transparent; white-space: nowrap; }
.badge-waiting   { background: #fff1e6; color: #a04a00; border-color: #f3c9a3; }
.badge-draft     { background: #eef3fc; color: #1f4fa8; border-color: #c4d4f3; }
.badge-published { background: #e8f6ee; color: #1b6b3a; border-color: #b6e0c4; }
.badge-revising  { background: #f4ecfb; color: #6b2fa0; border-color: #d9c2ee; }
.badge-muted     { background: #f0f1f4; color: var(--c-muted); border-color: var(--c-border); }
.req { color: var(--c-error); }

/* ---- 대상 월 이동, 상태별 숫자 (HOME-01) ---- */
.month-nav { display: flex; gap: 6px; margin-left: auto; }
.stat-cards { list-style: none; margin: 0 0 20px; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.stat-card { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; border: 1px solid var(--c-border); border-left-width: 5px; border-radius: var(--radius); text-decoration: none; color: var(--c-text); background: var(--c-surface); }
.stat-card:hover { box-shadow: 0 2px 10px rgba(31, 58, 104, .1); }
.stat-label { font-size: 14px; color: var(--c-muted); font-weight: 600; }
.stat-value { font-size: 28px; font-weight: 700; line-height: 1.2; }
.stat-value small { font-size: 14px; margin-left: 2px; font-weight: 600; color: var(--c-muted); }
.stat-waiting { border-left-color: #e8853b; }
.stat-draft { border-left-color: #3b6fd1; }
.stat-published { border-left-color: #2f9a5a; }
.stat-revising { border-left-color: #8b4fc7; }

/* ---- 표 ---- */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 10px 12px; border-bottom: 1px solid var(--c-border); text-align: left; vertical-align: middle; }
.data-table thead th { background: #f7f8fa; font-size: 13px; color: var(--c-muted); font-weight: 700; }
.data-table tbody tr:hover { background: #fafbfd; }
.cell-actions { text-align: right; white-space: nowrap; }
.row-link { font-weight: 600; }
.list-count { margin: 0 0 8px; }
.enroll-chip { display: inline-block; margin: 2px 6px 2px 0; padding: 1px 8px; border-radius: 6px; background: #f3f5f8; font-size: 13px; }
.enroll-chip.is-ended { color: var(--c-muted); text-decoration: line-through; }
.pager { display: flex; justify-content: center; align-items: center; gap: 12px; margin-top: var(--gap); }

/* ---- 검색 필터 (STU-01) ---- */
.filter-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; }
.filter-form .field { min-width: 160px; flex: 1 1 160px; }
.filter-form .field:first-child { flex: 2 1 240px; }
.filter-buttons { display: flex; gap: 8px; }

/* ---- 입력 폼 (STU-02) ---- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--gap) 20px; }
.form-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.field-full { grid-column: 1 / -1; }
fieldset.field { border: 0; margin: 0; padding: 0; min-width: 0; }
fieldset.field legend { font-weight: 600; font-size: 14px; padding: 0; margin-bottom: 6px; }
.radio-row { display: flex; flex-wrap: wrap; gap: 8px 20px; min-height: 44px; align-items: center; }
.radio, .checkbox { display: inline-flex; align-items: center; gap: 6px; font-weight: 500; cursor: pointer; }
.radio input, .checkbox input { width: 18px; height: 18px; min-height: 0; margin: 0; }
.field input.is-readonly { background: #f3f5f8; color: var(--c-muted); }
.form-buttons { display: flex; flex-direction: row; justify-content: flex-end; align-items: center; gap: 8px; }
.same-name-list { margin: 8px 0; padding-left: 20px; }
.edit-section + .edit-section { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--c-border); }
.edit-section h2 { font-size: 17px; margin: 0 0 14px; }
.sub-heading { font-size: 15px; margin: 22px 0 10px; }
.inline-controls { display: flex; gap: 6px; align-items: center; margin: 0; }
.inline-controls select { font: inherit; padding: 6px 8px; border: 1px solid var(--c-border); border-radius: 6px; min-height: 32px; }

/* ---- 학생 상세 (STU-03) ---- */
.student-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: var(--gap); }
.student-head p { margin: 0; }
.student-name { font-size: 20px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.code-chip { font-family: Consolas, monospace; font-size: 14px; padding: 1px 8px; border-radius: 6px; background: #eef1f6; }
.enroll-block { border: 1px solid var(--c-border); border-radius: var(--radius); padding: 14px 16px; margin-top: var(--gap); }
.enroll-head { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 10px; }
.enroll-head h2 { font-size: 16px; margin: 0; }
.enroll-start { margin-left: auto; }
.report-target { font-size: 16px; }

/* ---- 보고서 목록 (RPT-01) ---- */
.page-month { font-weight: 700; color: var(--c-primary); }
.filter-form .field-status { flex: 1 1 100%; }

/* ---- 보고서 편집 (EDIT-01~07) ---- */
.editor-head { position: sticky; top: 0; z-index: 10; background: var(--c-surface); margin: -20px -20px 16px; padding: 14px 20px 0; border-bottom: 1px solid var(--c-border); border-radius: var(--radius) var(--radius) 0 0; }
.editor-title { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.editor-title h1 { font-size: 19px; margin: 0; }
.save-state { margin: 4px 0 6px; font-size: 13px; color: var(--c-muted); }
.save-state strong { color: var(--c-text); }
.dirty-flag { color: #a04a00; font-weight: 700; }
.editor-tabs ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 2px; overflow-x: auto; }
.editor-tabs a { display: block; padding: 10px 14px; text-decoration: none; color: var(--c-text); border-bottom: 3px solid transparent; white-space: nowrap; font-weight: 600; }
.editor-tabs a:hover { color: var(--c-primary); }
.js-tabs .editor-tabs a[aria-selected="true"] { color: var(--c-primary); border-bottom-color: var(--c-primary); }
.tab-error { display: inline-block; min-width: 18px; padding: 0 5px; margin-left: 4px; border-radius: 999px; background: var(--c-error); color: #fff; font-size: 11px; line-height: 18px; text-align: center; }
.editor-panel, .editor-records { margin-bottom: 16px; }
.editor-panel h2 { font-size: 17px; margin: 4px 0 10px; }
.editor-panel > .muted, .editor-records > .muted { margin: 8px 0; }
.show-toggle { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; padding: 10px 12px; margin-bottom: 12px; background: #f7f8fa; border: 1px solid var(--c-border); border-radius: var(--radius); }
.edit-table td { vertical-align: top; }
.edit-table input, .edit-table select, .edit-table textarea { font: inherit; width: 100%; min-height: 40px; padding: 8px 10px; border: 1px solid var(--c-border); border-radius: 6px; background: #fff; }
.edit-table input:focus, .edit-table select:focus, .edit-table textarea:focus { border-color: var(--c-accent); box-shadow: var(--focus); outline: none; }
.edit-table input:disabled { background: #f3f5f8; }
.edit-table .input-validation-error { border-color: var(--c-error); background: var(--c-error-bg); }
.edit-table .checkbox input { width: 18px; height: 18px; min-height: 0; }
.edit-table .field-error { display: block; margin-top: 4px; }
.edit-table .col-date { width: 170px; }
.edit-table .col-label { width: 130px; }
.edit-table .col-att { width: 150px; }
.edit-table td.cell-actions { width: 1%; }
.pct-input { display: inline-flex; align-items: center; gap: 6px; }
.edit-table .pct-input input { width: 84px; }
#records[data-mode="attendance"] .col-content { display: none; }
#records[data-mode="lessons"] .col-att { display: none; }
textarea.autogrow { resize: vertical; overflow: hidden; field-sizing: content; }
.empty-rows { padding: 12px; text-align: center; border: 1px dashed var(--c-border); border-radius: var(--radius); }
.review-box { margin-top: 20px; padding: 14px 16px; border: 1px solid var(--c-border); border-radius: var(--radius); background: #fafbfd; }
.review-box h3 { margin: 0 0 2px; font-size: 16px; }
.review-box h4 { margin: 12px 0 6px; font-size: 14px; }
.review-box > .muted { margin: 0; }
.review-block { color: var(--c-error); }
.review-warn { color: #a04a00; }
.review-list { margin: 0; padding-left: 20px; }
.review-ok { list-style: none; padding-left: 0; margin-top: 10px; color: #1b6b3a; }
.review-ok li::before { content: "✓ "; font-weight: 700; }

/* ---- 게시본 보기 (VIEW-01) · 이미지 출력 (OUT-01) ---- */
.view-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 20px; align-items: start; }
.view-doc { background: #eef1f6; border-radius: var(--radius); padding: 16px; }
.view-doc .rd-document { box-shadow: 0 2px 12px rgba(31, 58, 104, .08); border-radius: 6px; }
.view-side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 12px; }
.side-box { border: 1px solid var(--c-border); border-radius: var(--radius); padding: 14px 16px; background: var(--c-surface); display: flex; flex-direction: column; gap: 8px; }
.side-box h2 { font-size: 16px; margin: 0; }
.side-box p { margin: 0; }
.export-file { font-family: Consolas, monospace; font-size: 13px; word-break: break-all; background: #f3f5f8; padding: 4px 8px; border-radius: 6px; }
.export-status:empty { display: none; }
.version-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.version-list li { display: flex; flex-wrap: wrap; gap: 2px 8px; padding: 6px 8px; border-radius: 6px; }
.version-list li.is-current { background: var(--c-info-bg); }
.version-list a { font-weight: 700; }
.version-summary { width: 100%; font-size: 13px; }

/* ---- 미리보기·게시 확인 대화상자 (VIEW-01, PUB-01) ---- */
dialog.sheet { width: min(880px, 96vw); max-height: 92vh; padding: 0; border: 0; border-radius: 12px; box-shadow: 0 12px 40px rgba(15, 23, 42, .35); overflow: auto; }
dialog.sheet::backdrop { background: rgba(15, 23, 42, .55); }
dialog.sheet-narrow { width: min(560px, 96vw); }
.sheet-head { position: sticky; top: 0; z-index: 2; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; padding: 14px 18px; background: var(--c-surface); border-bottom: 1px solid var(--c-border); }
.sheet-head h2 { margin: 0; font-size: 18px; }
.sheet-actions { margin-left: auto; display: flex; gap: 8px; }
.sheet-body { padding: 18px; background: #eef1f6; }
.sheet-narrow .sheet-body { background: var(--c-surface); }
.publish-confirm h2 { margin: 0 0 8px; font-size: 19px; }
.publish-confirm > p { margin: 0 0 10px; }
.pc-info { display: grid; grid-template-columns: 7em 1fr; gap: 6px 12px; margin: 12px 0 16px; padding: 12px 14px; background: #f7f8fa; border-radius: var(--radius); }
.pc-info dt { color: var(--c-muted); font-weight: 700; font-size: 14px; }
.pc-info dd { margin: 0; }
.pc-warn { padding: 10px 14px; margin-bottom: 12px; background: var(--c-warn-bg); border: 1px solid var(--c-warn-bd); border-radius: var(--radius); }
.pc-warn p { margin: 0 0 4px; }
.pc-form { margin-top: 16px; }
.btn[disabled] { cursor: not-allowed; }

/* ---- 일괄 출력 (OUT-01) ---- */
.list-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.list-toolbar .list-count { margin: 0; }
.data-table .col-check { width: 40px; }
.data-table .col-check input { width: 18px; height: 18px; }
.job-progress { margin-bottom: 16px; padding: 14px 16px; border: 1px solid var(--c-border); border-radius: var(--radius); background: #f7f8fa; }
.job-count { margin: 0 0 6px; font-size: 18px; }
.job-count strong { font-size: 24px; color: var(--c-primary); }
.job-progress progress { width: 100%; height: 14px; }
.job-progress p.muted { margin: 6px 0 0; }

/* ---- 엑셀 업로드 (IMP-01, IMP-02) ---- */
.import-steps { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.import-steps li { display: flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: #f0f1f4; color: var(--c-muted); font-weight: 600; font-size: 14px; }
.import-steps .step-no { display: inline-flex; width: 22px; height: 22px; align-items: center; justify-content: center; border-radius: 50%; background: #fff; font-size: 12px; }
.import-steps li.is-done { background: var(--c-info-bg); color: var(--c-primary); }
.import-steps li.is-current { background: var(--c-primary); color: #fff; }
.import-steps li.is-current .step-no { color: var(--c-primary); }
.import-counts .stat-card { cursor: default; }
.guide-list { margin: 0 0 12px; padding-left: 20px; }
.guide-list li + li { margin-top: 4px; }
.text-error { color: var(--c-error); }
.diff-table tr.diff-first td { border-top: 2px solid var(--c-border); }
.diff-table .diff-old { color: var(--c-muted); white-space: pre-wrap; }
.diff-table .diff-new { font-weight: 600; white-space: pre-wrap; }

/* ---- 설정 (SET-01, SET-02) ---- */
.settings-cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.settings-card { display: flex; flex-direction: column; gap: 6px; height: 100%; padding: 16px 18px; border: 1px solid var(--c-border); border-radius: var(--radius); color: var(--c-text); text-decoration: none; }
.settings-card:hover { border-color: var(--c-primary); box-shadow: 0 2px 10px rgba(31, 58, 104, .08); }
.settings-card strong { font-size: 16px; color: var(--c-primary); }
.add-row-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; margin-top: 12px; }
.add-row-form .field { min-width: 180px; }
.input-sort { width: 80px; }
.narrow-form { max-width: 440px; }
.cell-actions .inline-form + .inline-form { margin-left: 4px; }

/* ---- 학부모 화면 (PAR-01~04): 휴대전화 우선 한 열 ---- */
.parent-inner { max-width: 720px; }
.parent-container { max-width: 720px; }
.parent-card { background: var(--c-surface); border: 1px solid var(--c-border); border-radius: 12px; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.parent-card p { margin: 0; }
.parent-help { margin-top: 16px; }
.code-input { font-size: 22px !important; letter-spacing: .3em; text-align: center; }
.code-limits span { white-space: nowrap; }
.resend-form { margin: 0; }
.child-list, .month-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.child-card, .month-item { display: flex; flex-direction: column; gap: 4px; padding: 16px 18px; background: var(--c-surface); border: 1px solid var(--c-border); border-radius: 12px; color: var(--c-text); text-decoration: none; }
.child-card:hover, .month-item:hover { border-color: var(--c-primary); }
.child-name { font-size: 18px; color: var(--c-primary); }
.child-subject { display: flex; justify-content: space-between; gap: 8px; }
.month-item { flex-direction: row; justify-content: space-between; align-items: center; }
.month-go { color: var(--c-accent); font-weight: 600; white-space: nowrap; }
.parent-report-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; margin-bottom: 12px; }
.parent-report-head h1 { margin: 0; font-size: 20px; }
.month-select { display: flex; align-items: center; gap: 8px; }
.month-select label { font-weight: 600; font-size: 14px; }
.month-select select { font: inherit; min-height: 40px; padding: 6px 10px; border: 1px solid var(--c-border); border-radius: var(--radius); background: #fff; }
.parent .rd-document { border: 1px solid var(--c-border); border-radius: 12px; }
.parent-nav { display: flex; gap: 8px; margin-top: 16px; }
.parent-nav .btn { flex: 1; }
.guardian-block { border: 1px solid var(--c-border); border-radius: var(--radius); padding: 12px 16px; margin-top: 12px; }
.guardian-block h3 { margin: 0; font-size: 16px; }

/* ---- 반응형: 메뉴 접기, 본문 한 열 ---- */
@media (max-width: 767.98px) {
    .topbar-inner { padding: 0 12px; }
    .brand { font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
    .user-area { gap: 4px; font-size: 13px; white-space: nowrap; }
    .user-area .btn-link { padding: 4px 2px; }
    .user-name .role-badge { display: none; }
    .menu-toggle { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: none; border: 1px solid rgba(255,255,255,.35); border-radius: var(--radius); cursor: pointer; }
    .menu-toggle-bar, .menu-toggle-bar::before, .menu-toggle-bar::after { display: block; width: 18px; height: 2px; background: #fff; position: relative; content: ""; }
    .menu-toggle-bar::before { position: absolute; top: -6px; }
    .menu-toggle-bar::after { position: absolute; top: 6px; }
    .mainnav { display: none; }
    .mainnav.open { display: block; }
    .mainnav ul { flex-direction: column; padding: 0; }
    .mainnav a { border-bottom: 1px solid var(--c-border); border-left: 3px solid transparent; }
    .mainnav a.active { border-bottom-color: var(--c-border); border-left-color: var(--c-primary); }
    .container { padding: 16px 12px 96px; }
    .container-narrow { padding-top: 24px; }
    .page-head h1 { font-size: 19px; }
    .page-body { padding: 16px; }
    /* 저장·미리보기 등 주요 동작을 하단에 고정 (MOB-01) */
    .page-actions { position: fixed; left: 0; right: 0; bottom: 0; margin: 0; padding: 10px 12px calc(10px + env(safe-area-inset-bottom)); background: var(--c-surface); border-top: 1px solid var(--c-border); z-index: 20; }
    .page-actions .btn { flex: 1; }

    /* 표는 행 상세(카드)로 전환 (MOB-01) */
    .data-table thead { display: none; }
    .data-table, .data-table tbody, .data-table tr, .data-table td { display: block; width: 100%; }
    .data-table tr { border: 1px solid var(--c-border); border-radius: var(--radius); margin-bottom: 10px; padding: 6px 4px; }
    .data-table td { border: 0; padding: 6px 10px; display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
    .data-table td[data-label]::before { content: attr(data-label); min-width: 72px; font-size: 12px; color: var(--c-muted); font-weight: 700; }
    .cell-actions { text-align: left; justify-content: flex-end; }
    .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
    .filter-form .field, .filter-buttons { flex: 1 1 100%; }
    .filter-buttons .btn { flex: 1; }
    .month-nav { margin-left: 0; width: 100%; }
    .month-nav .btn { flex: 1; }
    .stat-cards { grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .stat-card { padding: 10px; }
    .stat-value { font-size: 22px; }
    .student-head { flex-direction: column; }
    .enroll-start { margin-left: 0; width: 100%; }
    .enroll-start .btn { width: 100%; }
    .editor-head { margin: -16px -16px 12px; padding: 10px 16px 0; }
    .editor-title h1 { font-size: 17px; width: 100%; }
    .editor-tabs ul { flex-wrap: wrap; }
    .editor-tabs a { padding: 8px 10px; }
    .edit-table td.cell-actions { width: 100%; }
    .hide-mobile { display: none !important; }
    .page-actions { flex-wrap: wrap; gap: 6px; }
    .page-actions .btn { flex: 1 1 28%; min-height: 44px; padding: 6px 8px; }
    .view-layout { grid-template-columns: 1fr; }
    .view-doc { padding: 0; background: none; }
    .view-side { position: static; }
    dialog.sheet, dialog.sheet-narrow { width: 100vw; max-width: 100vw; height: 100dvh; max-height: 100dvh; margin: 0; border-radius: 0; }
    .sheet-head { padding: 10px 12px; }
    .sheet-actions { width: 100%; margin-left: 0; }
    .sheet-actions .btn { flex: 1; }
    .sheet-body { padding: 10px; }
    .pc-info { grid-template-columns: 1fr; }
    .edit-table .col-date, .edit-table .col-label, .edit-table .col-att { width: 100%; }
    .edit-table td > input, .edit-table td > select, .edit-table td > textarea, .edit-table td > .pct-input { flex: 1 1 180px; }
    .edit-table .field-error { flex-basis: 100%; }
}