/* Exam Flow v0.9 — 클래스매이트 스타일 기반 UI (screen only) */

:root {
  --bg-page: #f3f4f8;
  --bg-card: #ffffff;
  --text-primary: #1c1c1e;
  --text-secondary: #6a6a72;
  --line: rgba(60, 60, 67, 0.14);
  --ios-blue: #007aff;
  --ios-blue-soft: rgba(0, 122, 255, 0.1);
  --shadow: 0 8px 30px rgba(28, 28, 30, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
  --radius-md: 12px;
  --radius-btn: 12px;
  --pill: 999px;
  --gap-panel: 18px;
  --gap-card-inner: 16px;
  --pad-card: 22px;

  /* Exam Flow aliases */
  --primary: var(--ios-blue);
  --primary-hover: #0066d6;
  --primary-soft: var(--ios-blue-soft);
  --success: #34c759;
  --warning: #ff9500;
  --danger: #ff3b30;
  --bg: var(--bg-page);
  --card: var(--bg-card);
  --border: var(--line);
  --text: var(--text-primary);
  --subtext: var(--text-secondary);
  --muted: var(--text-secondary);
  --shadow-hover: 0 12px 36px rgba(28, 28, 30, 0.1);
  --transition: 200ms ease;
  --btn-height: 44px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  font-family: inherit;
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* 화면 미리보기: UI와 동일한 Pretendard (인쇄 시 print.css 양식 유지) */
@media screen {
  .output-preview .print-doc,
  .output-preview .print-doc * {
    font-family: inherit;
  }
}

/* ========== App Shell ========== */

.app-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 18px 68px;
  padding-left: max(18px, env(safe-area-inset-left));
  padding-right: max(18px, env(safe-area-inset-right));
}

/* ========== Hero (클래스매이트 스타일) ========== */

.hero-copyright {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.45rem 0.55rem;
  margin: 0 0 12px;
  text-align: right;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.02em;
  color: var(--text-secondary);
  word-break: keep-all;
  opacity: 0.95;
}

.hero-copyright__sep {
  display: inline-block;
  width: 1px;
  height: 0.85em;
  background: currentColor;
  opacity: 0.35;
  flex-shrink: 0;
}

.hero {
  position: relative;
  text-align: center;
  padding: 40px 24px 36px;
  overflow: hidden;
  isolation: isolate;
  margin-bottom: 0;
  background: linear-gradient(135deg, #ffffff 0%, #f7fbff 45%, #eef6ff 100%);
  box-shadow: 0 14px 34px rgba(28, 28, 30, 0.1), 0 2px 12px rgba(28, 28, 30, 0.05);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}

.hero::before {
  width: 180px;
  height: 180px;
  top: -90px;
  left: -70px;
  background: radial-gradient(circle, rgba(87, 153, 255, 0.16) 0%, rgba(87, 153, 255, 0.03) 58%, transparent 78%);
  filter: blur(8px);
}

.hero::after {
  width: 280px;
  height: 280px;
  right: -130px;
  bottom: -150px;
  background: radial-gradient(circle, rgba(123, 146, 255, 0.14) 0%, rgba(123, 146, 255, 0.04) 62%, transparent 82%);
  filter: blur(12px);
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 14px;
  padding: 8px 14px;
  border-radius: var(--pill);
  background: rgba(0, 122, 255, 0.1);
  border: 1px solid rgba(0, 122, 255, 0.18);
  color: #005fbf;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  animation: heroFadeUp 0.52s ease both;
}

.hero-title {
  margin: 0;
  font-size: clamp(1.55rem, 3.8vw, 2.35rem);
  font-weight: 820;
  letter-spacing: -0.03em;
  line-height: 1.08;
  animation: heroFadeUp 0.62s ease both;
}

.hero-title-emoji {
  margin-right: 0.14em;
  font-size: 0.9em;
  vertical-align: 0.04em;
}

.hero-desc {
  margin: 14px auto 0;
  color: var(--text-secondary);
  line-height: 1.72;
  font-size: 1.02rem;
  max-width: 36rem;
  animation: heroFadeUp 0.75s ease both;
}

@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 관리실 ========== */

.office-action-group {
  padding-top: 18px;
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.office-action-group:first-of-type {
  margin-top: 4px;
  padding-top: 0;
  border-top: none;
}

.office-action-group--danger {
  margin-top: 22px;
  padding: 16px;
  border: 1px solid #fecaca;
  border-radius: var(--radius-sm);
  background: #fef2f2;
}

.office-action-group--danger .card__title--sub {
  color: #b91c1c;
}

.office-hint {
  margin-bottom: 12px;
}

.office-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.office-actions .btn { flex-shrink: 0; }

/* ========== Tab Navigation (클래스매이트 pill) ========== */

.tab-nav-wrap {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 12px 0 16px;
  background: linear-gradient(to bottom, var(--bg-page), rgba(243, 244, 248, 0));
}

.ef-nav-under-hero {
  padding-top: 8px;
  margin-top: -4px;
}

.tab-nav-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px 14px;
}

.step-nav.tab-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 12px;
  border-radius: var(--pill);
  background: rgba(118, 118, 128, 0.12);
  -webkit-overflow-scrolling: touch;
  flex: 1 1 auto;
  min-width: 0;
  max-width: 100%;
  border: none;
  box-shadow: none;
  margin: 0;
}

.step-tab {
  border: none;
  border-radius: var(--pill);
  background: transparent;
  color: var(--text-secondary);
  padding: 11px 15px;
  white-space: nowrap;
  cursor: pointer;
  font-weight: 600;
  font-family: inherit;
  font-size: clamp(0.74rem, 1.8vw, 0.86rem);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.step-tab-label { white-space: nowrap; }

.step-tab-status {
  font-size: 0.75rem;
  line-height: 1;
}

.step-tab:hover { transform: scale(1.04); }

.step-tab:active { transform: scale(0.97); }

.step-tab.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow);
}

.step-tab.done .step-tab-status::before {
  content: "✅";
  margin-left: 2px;
}

/* ========== Main / Panels ========== */

.main-content,
.tab-panels {
  margin-top: 16px;
}

.step-panel {
  display: none;
}

.step-panel.active,
.tab-panel.active {
  display: grid;
  gap: var(--gap-panel);
}

/* ========== Cards (클래스매이트 구조) ========== */

.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.section-card {
  padding: var(--pad-card);
  margin-bottom: 0;
}

.card__title {
  margin: 0 0 14px;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  word-break: keep-all;
}

.card__title--sub {
  font-size: 1rem;
}

.card-icon { font-size: 1.1rem; line-height: 1; }

.hint {
  color: var(--text-secondary);
  font-size: 0.88rem;
  margin-bottom: 14px;
  line-height: 1.65;
  max-width: 42rem;
}

/* ========== Forms ========== */

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.form-grid .span-2 { grid-column: span 2; }

.form-inline-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 14px;
}

.form-inline-row > label {
  flex: 1 1 120px;
  min-width: 0;
  margin: 0;
}

.form-inline-row > label input,
.form-inline-row > label select {
  width: 100%;
}

.meta-fields-row > label { flex: 1 1 100px; max-width: 160px; }
.seat-config-row > label { flex: 1 1 130px; max-width: 180px; }
.movement-fields-row > label { flex: 1 1 140px; max-width: 200px; }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--subtext);
}

input, select, textarea {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: inherit;
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

/* ========== Buttons ========== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: var(--btn-height);
  padding: 0 18px;
  border-radius: var(--radius-btn);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.25);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 16px rgba(0, 122, 255, 0.3);
}

.btn-secondary {
  background: var(--bg-page);
  color: var(--text-primary);
  border-color: var(--line);
}

.btn-secondary:hover {
  background: var(--ios-blue-soft);
  border-color: rgba(0, 122, 255, 0.28);
  color: var(--ios-blue);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover { background: #e6352b; }

.btn-sm {
  min-height: 36px;
  padding: 0 12px;
  font-size: 0.8rem;
}

.file-label { display: inline-flex; align-items: center; cursor: pointer; }

/* ========== Tables ========== */

.data-table,
.timetable-table,
.placement-table,
.diagnosis-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table th,
.data-table td,
.timetable-table th,
.timetable-table td,
.placement-table th,
.placement-table td,
.diagnosis-table th,
.diagnosis-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
}

.data-table th,
.timetable-table th,
.placement-table th,
.diagnosis-table th {
  background: #f3f6fb;
  font-weight: 700;
  color: var(--text);
}

.data-table tbody tr:hover td,
.placement-table tbody tr:hover td,
.diagnosis-table tbody tr:hover td {
  background: #fafcff;
}

.data-table tr:nth-child(even) td,
.placement-table tr:nth-child(even) td {
  background: #fafbfc;
}

.data-table tr:nth-child(even):hover td,
.placement-table tr:nth-child(even):hover td {
  background: #fafcff;
}

/* 학번·번호·좌석 — 가운데 정렬 (JS 생성 테이블 공통) */
.data-table td:nth-child(1),
.data-table td:nth-child(2) {
  text-align: center;
}

.placement-table .col-number,
.placement-table .col-seat-no {
  text-align: center;
}

.timetable-table { margin-bottom: 12px; }
.timetable-table th, .timetable-table td { text-align: center; }
.timetable-table input { width: 100%; min-width: 80px; }

.table-scroll {
  overflow-x: auto;
  max-height: 420px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

/* ========== Misc components ========== */

.exam-dates-row { margin-bottom: 14px; }

.exam-dates-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.exam-date-cell {
  flex: 1 1 120px;
  max-width: 160px;
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fafbfc;
}

.exam-date-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--subtext);
}

.exam-date-cell input {
  margin-top: 6px;
}

.timetable-scroll {
  overflow-x: auto;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.timetable-unified { margin-bottom: 0; min-width: 640px; }
.timetable-unified .tt-col-grade { width: 4.5rem; }
.timetable-unified .tt-col-period { width: 4rem; }
.timetable-unified .tt-grade-cell {
  vertical-align: middle;
  font-size: 0.9rem;
  background: #eef2f8;
}
.timetable-unified .tt-period-cell {
  font-size: 0.82rem;
  background: #f8fafc;
}
.timetable-unified tbody tr.tt-grade-separator td,
.timetable-unified tbody tr.tt-grade-separator th.tt-period-cell {
  background: #f8fafc;
}

.movement-grade-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 10px;
  background: #fafbfc;
}

.movement-grade-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.movement-grade-head h3 {
  margin: 0;
  font-size: 0.95rem;
}

.movement-enable-inline {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  margin: 0;
}

.movement-preview-picker {
  margin-top: 12px;
  margin-bottom: 8px;
}

.movement-preview-picker label {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  max-width: 320px;
}

.movement-preview-picker select {
  flex: 1;
  min-width: 160px;
}

.move-preview-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: #fff;
}

.move-preview-panel h4 {
  margin: 0 0 8px;
  font-size: 0.88rem;
}

.move-preview-warn {
  font-size: 0.8rem;
  margin-top: 8px;
}

.seat-config-hint { margin: 0 0 12px; }

.seat-config-preview {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: #fafbfc;
}

.seat-preview-title {
  margin: 0 0 8px;
  font-size: 0.82rem;
  font-weight: 700;
}

.seat-preview-meta {
  font-weight: 500;
  color: var(--subtext);
  font-size: 0.75rem;
}

.seat-preview-table.seat-layout-table {
  width: auto;
  max-width: 100%;
  margin: 0 auto;
  table-layout: fixed;
  border-collapse: collapse;
}

.seat-preview-table.seat-layout-table td {
  width: 4rem;
  height: 3.3rem;
  min-height: 0;
  max-height: none;
  padding: 3px 5px;
  border: 1px solid #bbb;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.25;
  background-image: none !important;
}

.seat-preview-table td.seat-preview-cell {
  background: #fff;
  color: var(--text);
}

.seat-preview-table td.seat-preview-home {
  background: #fff;
}

.seat-preview-table td.seat-preview-move {
  background: #e8e8e8;
}

.seat-preview-footer {
  margin-top: 6px;
}

.seat-preview-footer .door-marker {
  margin-top: 0;
  padding: 4px 12px;
  font-size: 0.78rem;
  border-width: 1px;
}

.seat-preview-legend {
  margin: 6px 0 0;
  font-size: 0.72rem;
  text-align: center;
}

.seat-preview-block + .seat-preview-block {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.rooms-setup-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.room-setup-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fafbfc;
  min-width: 0;
}

.room-setup-col-title {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 700;
  text-align: center;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.room-setup-field {
  margin: 0;
}

.room-setup-field span {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--subtext);
}

.room-setup-field input {
  width: 100%;
  margin-top: 6px;
}

.room-setup-btn {
  width: 100%;
  min-height: var(--btn-height);
  margin-top: auto;
}

@media (max-width: 1100px) {
  .rooms-setup-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 720px) {
  .rooms-setup-grid {
    grid-template-columns: 1fr;
  }
}

.upload-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}

.upload-box {
  border: 2px dashed #d1d5db;
  border-radius: var(--radius-sm);
  padding: 20px 16px;
  text-align: center;
  background: #fafbfc;
  transition: border-color var(--transition), background var(--transition);
}

.upload-box:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.upload-status { display: block; margin-top: 8px; font-size: 0.82rem; color: var(--subtext); }
.upload-status.done { color: var(--success); font-weight: 700; }

.upload-summary {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.student-roster-table {
  width: 100%;
  table-layout: fixed;
}

.student-roster-table col.col-id { width: 92px; }
.student-roster-table col.col-name { width: 100px; }
.student-roster-table col.col-subjects { width: auto; }
.student-roster-table col.col-delete { width: 44px; }

.student-roster-table .col-id,
.student-roster-table .col-name {
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.student-roster-table .student-subjects-cell,
.student-roster-table .col-subjects {
  text-align: left;
  font-size: 0.82rem;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.student-roster-table .col-delete {
  width: 44px;
  text-align: center;
  vertical-align: middle;
}

.btn-icon-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: #9ca3af;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-icon-delete__icon {
  width: 16px;
  height: 16px;
}

.btn-icon-delete:hover {
  background: #fef2f2;
  border-color: #fecaca;
  color: #dc2626;
}

.btn-icon-delete:active {
  background: #fee2e2;
}

.student-roster-table tbody tr:hover .btn-icon-delete {
  color: #6b7280;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.summary-item {
  background: var(--primary-soft);
  padding: 14px;
  border-radius: var(--radius-sm);
  text-align: center;
  border: 1px solid rgba(0, 122, 255, 0.12);
}

.summary-item .value {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--primary);
}

.summary-item .label { font-size: 0.78rem; color: var(--subtext); margin-top: 4px; }

.error-box {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
}

.info-box {
  background: var(--primary-soft);
  border: 1px solid rgba(0, 122, 255, 0.2);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-top: 12px;
}

.hidden { display: none !important; }

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 12px;
}

.filter-row label { flex-direction: row; align-items: center; gap: 8px; }

.assignment-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 12px;
  background: #fafbfc;
}

.assignment-block h4 { margin-bottom: 8px; font-size: 0.92rem; }

.assignment-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}

.student-chips { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  background: #f3f4f6;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}

.chip.assigned { background: var(--primary-soft); color: var(--primary); }
.chip.unassigned { background: #fee2e2; color: var(--danger); }

.movement-preview { margin-top: 4px; }
.move-preview-meta { font-size: 0.8rem; color: var(--subtext); margin-top: 4px; }

/* ========== Step 4 — 자료검증 ========== */

.placement-data-panel {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.placement-table-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  gap: 10px 16px;
  margin-bottom: 8px;
}

.placement-header-left {
  justify-self: start;
}

.placement-header-center {
  justify-self: center;
}

.placement-header-right {
  justify-self: end;
}

.placement-filter-row {
  margin-bottom: 0;
  gap: 10px;
}

.placement-filter-row label {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  white-space: nowrap;
}

.placement-filter-row select {
  padding: 5px 8px;
  font-size: 0.8rem;
  min-width: 5.5rem;
}

.placement-room-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.placement-room-label {
  min-width: 5.5rem;
  text-align: center;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

.placement-room-arrow {
  min-width: 32px;
  min-height: 32px;
  padding: 0 8px;
  font-size: 1.15rem;
  line-height: 1;
}

.placement-header-right.placement-bulk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  justify-content: flex-end;
}

.placement-select-all {
  font-size: 0.78rem;
  white-space: nowrap;
}

.placement-header-right .bulk-select {
  padding: 5px 8px;
  font-size: 0.78rem;
  max-width: 7rem;
}

.placement-header-right .btn-sm {
  min-height: 32px;
  padding: 0 10px;
  font-size: 0.78rem;
}

@media (max-width: 900px) {
  .placement-table-header {
    grid-template-columns: 1fr;
    justify-items: stretch;
  }

  .placement-header-left,
  .placement-header-center,
  .placement-header-right {
    justify-self: stretch;
  }

  .placement-header-center .placement-room-nav {
    justify-content: center;
  }

  .placement-header-right {
    justify-content: flex-start;
  }
}

.placement-loading {
  text-align: center;
  padding: 32px 16px;
  color: var(--text-secondary);
}

.placement-pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.placement-pager-info {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.placement-pager-hint {
  margin: 0;
  font-size: 0.8rem;
}

.placement-validation-banner {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-top: 8px;
}

.placement-validation-banner.blocking { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.placement-validation-banner.warning-only { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.placement-validation-banner.ok { background: #ecfdf5; border: 1px solid #86efac; color: #166534; }

.placement-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.placement-bulk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.bulk-select, .bulk-memo-input { font-size: 0.82rem; padding: 8px 10px; border-radius: var(--radius-sm); }
.bulk-memo-input { min-width: 140px; }

.placement-table-wrap {
  border-radius: var(--radius-sm);
  overflow-x: auto;
  border: 1px solid var(--border);
}

.placement-record-count {
  margin: 6px 0 0;
  font-size: 0.72rem;
  text-align: right;
}

.placement-table {
  table-layout: fixed;
  width: 100%;
}

.placement-table.placement-table--compact th,
.placement-table.placement-table--compact td {
  padding: 2px 6px;
  font-size: 0.74rem;
  line-height: 1.2;
  vertical-align: middle;
}

.placement-table.placement-table--compact th {
  padding: 4px 6px;
  font-size: 0.72rem;
}

.placement-table.placement-table--compact .col-check {
  width: 28px;
  padding-left: 4px;
  padding-right: 4px;
}

.placement-table.placement-table--compact .col-number {
  width: 2.2rem;
}

.placement-table.placement-table--compact .col-subject {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.placement-table.placement-table--compact .col-room select {
  width: 100%;
  padding: 1px 4px;
  font-size: 0.72rem;
  min-height: 22px;
  height: 22px;
}

.placement-table th { position: sticky; top: 0; z-index: 1; }
.placement-table tr.row-conflict td { background: #fef2f2; }
.placement-table .col-check { text-align: center; }

.placement-table .col-seat-no {
  width: 88px;
  white-space: nowrap;
}

.placement-table .seat-no-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  flex-wrap: nowrap;
  gap: 0;
  line-height: 1;
}

.placement-table .seat-no-prefix {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
  margin-right: 1px;
}

.placement-table .pl-edit-seat {
  width: 2rem;
  min-width: 2rem;
  max-width: 2rem;
  padding: 0 2px;
  font-size: 0.72rem;
  text-align: center;
  height: 20px;
  min-height: 20px;
  border-radius: 3px;
  -moz-appearance: textfield;
}

.placement-table .pl-edit-seat::-webkit-outer-spin-button,
.placement-table .pl-edit-seat::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.placement-change-history {
  font-size: 0.82rem;
  max-height: 200px;
  overflow-y: auto;
}

.placement-change-history .history-item {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

/* ========== Step 5 — Lock bar ========== */

.step5-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  padding: 14px 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: sticky;
  top: 8px;
  z-index: 20;
}

.operation-lock-status {
  font-weight: 800;
  font-size: 1rem;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  letter-spacing: -0.02em;
}

.operation-lock-status.unlocked {
  background: #dcfce7;
  color: #15803d;
  border: 2px solid #86efac;
}

.operation-lock-status.locked {
  background: #fee2e2;
  color: #b91c1c;
  border: 2px solid #fca5a5;
}

.operation-lock-actions { display: flex; gap: 8px; }

/* ========== Step 5 — Dashboard & Diagnosis (single card, vertical) ========== */

.operation-overview-card {
  padding: 0;
  overflow: hidden;
  margin-bottom: 16px;
}

.operation-overview-row {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.operation-overview-section {
  padding: 16px 18px;
  min-width: 0;
}

.operation-dashboard {
  border-bottom: 1px solid var(--line);
}

.operation-diagnosis {
  flex: 1 1 auto;
}

.operation-dashboard-header,
.operation-diagnosis-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.operation-diagnosis-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.operation-dashboard .card__title,
.operation-diagnosis .card__title {
  font-size: 1rem;
  margin: 0;
}

.operation-dashboard-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.op-stat-item {
  flex: 0 0 auto;
  min-width: 88px;
  background: var(--primary-soft);
  border: 1px solid rgba(0, 122, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  text-align: center;
}

.operation-diagnosis-summary-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 8px;
}

.diagnosis-summary-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 0 0 auto;
}

.diag-summary-pill {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  text-align: center;
  border: 1px solid var(--border);
  min-width: 4.25rem;
}

.diag-summary-pill .pill-value {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.2;
}

.diag-summary-pill .pill-label {
  font-size: 0.68rem;
  font-weight: 600;
  margin-top: 2px;
}

.diagnosis-summary {
  font-size: 0.82rem;
  margin: 0;
  color: var(--subtext);
  flex: 1 1 12rem;
  min-width: 0;
  line-height: 1.4;
}

.diagnosis-results-table {
  margin-top: 0;
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.diagnosis-results-table:empty {
  display: none;
}

.op-stat-item .op-value {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--primary);
}

.op-stat-item .op-label {
  font-size: 0.72rem;
  color: var(--subtext);
  margin-top: 4px;
  font-weight: 600;
}

.diagnosis-status-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
}

.diagnosis-status-badge.ok { background: #dcfce7; color: #15803d; }
.diagnosis-status-badge.warning { background: #ffedd5; color: #c2410c; }
.diagnosis-status-badge.error { background: #fee2e2; color: #b91c1c; }
.diagnosis-status-badge.pending { background: #f3f4f6; color: var(--subtext); }

.diag-summary-pill.error { background: #fef2f2; border-color: #fecaca; }
.diag-summary-pill.error .pill-value { color: var(--danger); }
.diag-summary-pill.warning { background: #fff7ed; border-color: #fed7aa; }
.diag-summary-pill.warning .pill-value { color: var(--warning); }
.diag-summary-pill.ok { background: #ecfdf5; border-color: #86efac; }
.diag-summary-pill.ok .pill-value { color: var(--success); }

.diagnosis-table tr.diag-error td { background: #fef2f2; }
.diagnosis-table tr.diag-warning td { background: #fff7ed; }
.diagnosis-table tr.diag-ok td { background: #ecfdf5; }

/* ========== Step 5 — Output tab card (ClassMate index style) ========== */

.output-work-card.output-work--indexed {
  padding: 0;
  overflow: hidden;
}

.output-index-row {
  display: flex;
  flex-wrap: nowrap;
  align-items: flex-end;
  gap: 0;
  padding: 0 6px;
  background: rgba(118, 118, 128, 0.07);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.output-index-tab {
  flex: 1 1 0;
  min-width: 5.25rem;
  max-width: 100%;
  margin: 0;
  padding: 12px 10px 11px;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 10px 10px 0 0;
  background: transparent;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--subtext);
  cursor: pointer;
  line-height: 1.35;
  white-space: nowrap;
  text-align: center;
  transition:
    color 0.15s ease,
    background 0.15s ease,
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.output-index-tab:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.45);
}

.output-index-tab:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: -2px;
}

.output-index-tab.is-active {
  color: var(--primary);
  background: var(--card);
  border-bottom-color: var(--primary);
  box-shadow: 0 1px 0 var(--card);
  position: relative;
  z-index: 1;
  margin-bottom: -1px;
  padding-bottom: 12px;
}

.output-index-panel {
  padding: 16px 18px 18px;
  background: var(--card);
}

.output-tab-panel[hidden] {
  display: none !important;
}

.output-tab-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.output-tab-head h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.output-card-icon { font-size: 1.1rem; }

.output-desc {
  font-size: 0.8rem;
  color: var(--subtext);
  margin: 0 0 12px;
  line-height: 1.5;
}

.output-tab-panel .output-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-bottom: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
}

.output-tab-panel .output-filters label {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  margin-bottom: 0;
  white-space: nowrap;
}

.output-tab-panel .output-filters select {
  min-width: 5rem;
}

.class-bulk-export {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 6px;
}

.class-bulk-work-card {
  margin-top: 16px;
}

.class-bulk-work-card .class-bulk-card-desc {
  margin: 0 18px 4px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.class-bulk-card-head {
  padding: 16px 18px 0;
}

.class-bulk-work-card .class-bulk-export {
  padding: 0 18px 18px;
}

.class-bulk-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: stretch;
}

.class-bulk-column {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.class-bulk-column-title {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.class-bulk-panel {
  flex: 1;
  min-height: 15rem;
  max-height: 22rem;
  padding: 14px 16px;
  border-radius: 14px;
  overflow: auto;
}

.class-bulk-panel--outputs {
  border: 1px solid var(--line);
  background: #fff;
}

.class-bulk-panel--grades {
  border: 1px solid rgba(118, 118, 128, 0.12);
  background: rgba(118, 118, 128, 0.07);
}

.class-bulk-check-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.class-bulk-check-list--grades {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.class-bulk-check {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  width: 100%;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  line-height: 1.4;
}

.class-bulk-check--all {
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(118, 118, 128, 0.14);
  font-weight: 700;
}

.class-bulk-check input[type="checkbox"] {
  width: 1.05rem;
  height: 1.05rem;
  min-width: 1.05rem;
  min-height: 1.05rem;
  flex-shrink: 0;
  margin: 0;
  padding: 0;
  border: none;
  box-shadow: none;
  accent-color: var(--primary);
  cursor: pointer;
}

.class-bulk-check-label {
  flex: 1;
  min-width: 0;
  color: var(--text-primary);
}

.class-bulk-hint {
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.class-bulk-save-btn {
  width: 100%;
  min-height: 48px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.class-bulk-save-btn:disabled {
  opacity: 0.65;
  cursor: wait;
}

.class-bulk-note {
  margin: -6px 0 0;
  font-size: 0.8rem;
  text-align: center;
  color: var(--text-secondary);
}

.bulk-export-stage {
  position: fixed;
  left: 0;
  top: 0;
  padding: 0;
  margin: 0;
  background: #fff;
  pointer-events: none;
  z-index: -1;
  overflow: visible;
}

body.bulk-export-active .bulk-export-stage {
  opacity: 1;
  max-width: none;
  width: auto;
}

.bulk-export-render-root {
  background: #fff;
  color: #111;
}

@media (max-width: 760px) {
  .class-bulk-columns {
    grid-template-columns: 1fr;
  }

  .class-bulk-panel {
    max-height: none;
    min-height: 0;
  }
}

.output-tab-panel .filter-check {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  margin-left: auto;
}

.output-card-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.output-card-actions .btn {
  min-height: 36px;
  padding: 0 12px;
  font-size: 0.75rem;
}

.output-preview-section {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.output-validation-banner {
  margin-bottom: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  display: none;
}

.output-validation-banner.has-warnings {
  display: block;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #c2410c;
}

.output-validation-banner.all-clear {
  display: block;
  background: #ecfdf5;
  border: 1px solid #86efac;
  color: #15803d;
}

.output-validation-banner.blocking {
  display: block;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.preview-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  flex-wrap: wrap;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.preview-toolbar .card__title { font-size: 1rem; margin: 0; }

.preview-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.preview-toolbar-actions label {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
}

.output-preview {
  min-height: 440px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  background: #fff;
  overflow: auto;
}

.output-preview .placeholder {
  color: var(--subtext);
  text-align: center;
  padding: 4rem 1rem;
}

/* 선택과목 응시 학생 — 미리보기 */
.output-preview .print-elective-students {
  max-width: 100%;
  overflow-x: auto;
}

.output-preview .print-elective-students .es-header {
  position: relative;
  border-bottom: none;
  margin-bottom: 8px;
}

.output-preview .print-elective-students .es-room-label {
  position: absolute;
  top: 0;
  right: 0;
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
}

.output-preview .print-elective-students .elective-students-table {
  font-size: 0.72rem;
  table-layout: fixed;
}

.output-preview .print-elective-students .elective-students-table th,
.output-preview .print-elective-students .elective-students-table td {
  padding: 0.22rem 0.15rem;
  line-height: 1.35;
}

.output-preview .print-elective-students .elective-students-table tbody td {
  padding-top: 0.28rem;
  padding-bottom: 0.28rem;
}

.output-preview .print-elective-students .es-col-order { width: 2rem; }
.output-preview .print-elective-students .es-col-num { width: 2.5rem; }
.output-preview .print-elective-students .es-col-name { width: 4rem; }

.output-preview .print-personal-board {
  max-width: 100%;
  overflow-x: auto;
}

.output-preview .print-personal-board.personal-board-fit-applied {
  overflow: hidden;
}

.output-preview .print-personal-board.personal-board-fit-applied .personal-board-table tbody td {
  height: var(--pb-data-row-mm, 6.5mm) !important;
  max-height: var(--pb-data-row-mm, 6.5mm) !important;
  min-height: 0;
  padding: clamp(0.5mm, calc(var(--pb-data-row-mm, 6.5mm) * 0.14), 1.2mm) 0.08rem;
  overflow: hidden;
  line-height: 1.22;
  box-sizing: border-box;
}

.output-preview .print-personal-board.personal-board-fit-applied:not(.personal-board-compact) .personal-board-table {
  font-size: 0.62rem;
}

.output-preview .print-personal-board.personal-board-fit-applied:not(.personal-board-compact) .pb-subject {
  font-size: 0.58rem;
}

.output-preview .print-personal-board.personal-board-fit-applied.personal-board-compact .personal-board-table tbody td {
  padding: clamp(0.15mm, calc(var(--pb-data-row-mm) * 0.1), 0.55mm) 0.06rem;
  line-height: 1.1;
}

.output-preview .print-personal-board.personal-board-fit-applied.personal-board-compact .pb-subject {
  font-size: clamp(5.5pt, calc(var(--pb-data-row-mm) * 0.46), 7pt);
}

.output-preview .print-personal-board.personal-board-fit-applied.personal-board-compact .personal-board-table {
  font-size: clamp(6pt, calc(var(--pb-data-row-mm) * 0.52), 8pt);
}

.output-preview .print-personal-board .pb-header {
  text-align: center;
  border-bottom: none;
  margin-bottom: 8px;
}

.output-preview .print-personal-board .pb-subtitle {
  font-size: 0.92rem;
  font-weight: 700;
  margin: 0.15rem 0 0;
}

.output-preview .personal-board-table {
  font-size: 0.68rem;
  table-layout: fixed;
  width: 100%;
}

.output-preview .personal-board-table th,
.output-preview .personal-board-table td {
  padding: 0.22rem 0.12rem;
  line-height: 1.35;
  text-align: center;
  word-break: keep-all;
}

.output-preview .personal-board-table .pb-col-id { width: 3.2rem; }
.output-preview .personal-board-table .pb-col-name { width: 3.6rem; }
.output-preview .personal-board-table .pb-subject { font-size: 0.65rem; }

.output-preview .personal-board-table tr.pb-row-fixed td {
  background-color: #e8e8e8;
}

.output-preview .personal-board-table tr.pb-row-move td {
  background-color: #fff;
}

.output-preview .personal-board-table .pb-side-label {
  width: 1.6rem;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.2em;
  font-weight: 700;
  font-size: 0.72rem;
}
.output-preview .personal-board-table .pb-side-head { width: 1.6rem; }

.output-preview .pb-footer-note {
  margin-top: 8px;
  font-size: 0.68rem;
  color: var(--text-secondary);
  text-align: left;
}

.output-preview .print-attendance-matrix {
  overflow: hidden;
  max-width: 210mm;
  margin: 0 auto;
}

.output-preview .print-attendance-matrix .att-matrix-header {
  text-align: center;
  margin-bottom: 0.75rem;
  border: none;
  padding: 0;
}

.output-preview .print-attendance-matrix .att-main-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0 0 0.35rem;
}

.output-preview .print-attendance-matrix .att-room-title {
  font-weight: 700;
  font-size: 0.92rem;
  margin: 0 0 0.5rem;
}

.output-preview .print-attendance-matrix .att-date-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  margin-bottom: 0.5rem;
}

.output-preview .print-attendance-matrix .att-date {
  flex: 1;
  text-align: center;
}

.output-preview .print-attendance-matrix .att-instruction {
  font-size: 0.78rem;
  white-space: nowrap;
}

.output-preview .attendance-group-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  margin-bottom: 0.65rem;
  font-size: 0.78rem;
}

.output-preview .attendance-group-table:last-child {
  margin-bottom: 0;
}

.output-preview .attendance-group-table th,
.output-preview .attendance-group-table td {
  border: 1px solid #000;
  padding: 0.12rem 0.08rem;
  text-align: center;
  vertical-align: middle;
  background: #fff;
}

.output-preview .attendance-group-table .att-group-label {
  font-weight: 700;
  line-height: 1.35;
  font-size: 0.78rem;
}

.output-preview .attendance-group-table .att-period-subject-row th,
.output-preview .attendance-group-table .att-column-head th {
  font-weight: 600;
  font-size: 0.74rem;
}

.output-preview .attendance-group-table .att-data-row td {
  height: var(--att-data-row-mm, 5.2mm);
  min-height: 0;
  max-height: var(--att-data-row-mm, 5.2mm);
  font-size: 0.78rem;
}

.output-preview .attendance-group-table .att-status-cell.is-elective {
  background: #d9d9d9;
}

.output-preview .attendance-group-table .att-sign-writer {
  text-align: right;
  padding-right: 0.35rem;
}

.output-preview .attendance-matrix-legend {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  margin-top: 0.5rem;
}

.output-preview .attendance-matrix-legend .att-legend-mark {
  display: inline-block;
  width: 0.75rem;
  height: 0.75rem;
  background: #d9d9d9;
  border: 1px solid #bbb;
}

.output-preview .attendance-matrix-legend::before {
  content: "*";
  margin-right: 0.1rem;
}

.output-preview .print-seat-map {
  overflow: hidden;
}

.output-preview .print-seat-map.seat-map-fit-applied {
  width: var(--seat-page-width-mm, 186mm);
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
}

.output-preview .print-seat-map.seat-map-fit-applied .seat-layout-table td {
  height: var(--seat-cell-mm) !important;
  min-height: 0 !important;
  max-height: var(--seat-cell-mm) !important;
  padding: clamp(0.4mm, calc(var(--seat-cell-mm) * 0.07), 1.2mm) clamp(0.4mm, calc(var(--seat-cell-mm) * 0.05), 1mm);
  overflow: hidden;
}

.output-preview .print-seat-map.seat-map-fit-applied .seat-layout-table th.seat-map-col-label {
  height: var(--seat-col-label-mm, 6mm) !important;
  max-height: var(--seat-col-label-mm, 6mm) !important;
  padding: 0.4mm 0.3mm;
  line-height: 1.1;
  overflow: hidden;
}

.output-preview .print-seat-map.seat-map-fit-applied.seat-map-compact .seat-layout-table .seat-id {
  font-size: clamp(0.62rem, calc(var(--seat-cell-mm) * 0.52), 0.75rem);
}

.output-preview .print-seat-map.seat-map-fit-applied.seat-map-compact .seat-layout-table .seat-name {
  font-size: clamp(0.68rem, calc(var(--seat-cell-mm) * 0.58), 0.82rem);
  line-height: 1.08;
}

.output-preview .print-seat-map .seat-layout-table {
  table-layout: fixed;
}

.output-preview .print-seat-map .seat-layout-table td {
  height: var(--seat-cell-mm, calc((var(--seat-printable-mm, 230mm) - var(--seat-map-chrome, 44mm)) / var(--seat-rows, 5)));
  min-height: 0;
  max-height: var(--seat-cell-mm, calc((var(--seat-printable-mm, 230mm) - var(--seat-map-chrome, 44mm)) / var(--seat-rows, 5)));
  padding: 0.3rem 0.2rem;
  vertical-align: middle;
  font-size: 0.82rem;
}

.output-preview .print-seat-map .seat-layout-table .seat-id {
  font-size: 0.82rem;
}

.output-preview .print-seat-map .seat-layout-table .seat-name {
  font-size: 1rem;
}

.output-preview .print-seat-map .seat-layout-table td.seat-empty {
  background-color: #fff;
  background-image: none;
  min-height: 0;
}

.output-preview .print-seat-map .seat-layout-table td.seat-map-col-move,
.output-preview .print-seat-map .seat-layout-table th.seat-map-col-move {
  background-color: #e8e8e8;
}

.output-preview .print-seat-map .seat-map-sheet-title {
  font-size: 1.25rem;
}

.output-preview .print-seat-map .seat-map-sheet-subtitle {
  font-size: 0.9rem;
}

.output-preview .print-seat-map .seat-map-sheet-meta {
  font-size: 0.78rem;
  color: #555;
}

.output-preview .att-group-label span {
  display: inline-block;
  line-height: 1.35;
  letter-spacing: 0.02em;
  font-weight: 700;
}

.validation-card .validation-ok { color: var(--success); }
.validation-card .validation-warn { color: var(--warning); }
.validation-card .validation-error { color: var(--danger); }
.validation-item { padding: 6px 0; border-bottom: 1px solid var(--border); }

/* Seat map (screen preview) */
.seat-grid { display: grid; gap: 8px; margin: 14px 0; }

.seat-cell {
  border: 1px solid var(--border);
  padding: 10px;
  min-height: 72px;
  font-size: 0.75rem;
  background: #fafbfc;
  border-radius: 8px;
}

.seat-cell .seat-no { font-weight: 800; color: var(--primary); }
.seat-cell.empty { background: #f3f4f6; color: var(--subtext); }
.seat-cell.move-student { border-color: var(--warning); background: #fff7ed; }
.move-label { font-size: 0.65rem; color: var(--warning); font-weight: 700; margin-top: 4px; }

.seat-grid-with-rows { margin: 14px 0; }
.seat-row-block { display: grid; gap: 8px; margin-bottom: 8px; }
.seat-row-label { font-size: 0.75rem; color: var(--subtext); margin-bottom: 4px; }

.doc-school { font-size: 1.1rem; font-weight: 700; margin: 0 0 6px; }

.period-cell { font-size: 0.75rem; line-height: 1.35; min-width: 70px; }
.period-cell .pc-subject { font-weight: 600; }
.period-cell .pc-room { color: var(--subtext); }
.period-cell .pc-seat { font-size: 0.7rem; }
.period-cell.empty-cell { color: #d1d5db; }
.room-op-lines { line-height: 1.5; white-space: pre-line; }

.doc-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.doc-summary-grid p {
  margin: 0;
  padding: 10px 12px;
  background: #f3f6fb;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

/* ========== Lock overlay ========== */

body.operation-locked #step-1,
body.operation-locked #step-2,
body.operation-locked #step-3,
body.operation-locked #step-4 {
  opacity: 0.5;
  pointer-events: none;
  user-select: none;
  filter: grayscale(0.15);
}

body.operation-locked #step-office,
body.operation-locked #step-5 {
  opacity: 1;
  pointer-events: auto;
}

/* ========== Footer ========== */

.app-footer {
  text-align: center;
  padding: 24px 20px;
  color: var(--subtext);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
  margin-top: 24px;
  background: var(--card);
}

/* ========== Responsive ========== */

@media (max-width: 900px) {
  .operation-diagnosis-summary-row {
    flex-direction: column;
    align-items: stretch;
  }

  .output-index-tab {
    flex: 0 0 auto;
    min-width: 4.75rem;
  }

  .step-tab { padding: 10px 12px; font-size: 0.74rem; }
  .hero { padding: 32px 18px 28px; }
  .hero-desc { font-size: 0.95rem; }
}

@media (min-width: 1200px) {
  .app-shell { padding-left: 24px; padding-right: 24px; }
  .main-content { max-width: 100%; }
}