.admin-page {
  max-width: 920px;
}

.admin-page {
  padding-top: 20px;
  padding-bottom: 40px;
}

.admin-page .site-header--compact {
  margin-bottom: 16px;
}

.admin-page .site-header--compact .header-top {
  margin-bottom: 0;
  gap: 12px;
}

.admin-page .header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1 1 auto;
}

.admin-page .site-title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.admin-page .header-brand-divider {
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.admin-page .header-actions {
  flex-shrink: 0;
}

.admin-page-footer {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.admin-page-footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.admin-footer-link {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
  padding: 0;
}

.admin-footer-link:hover {
  color: var(--blue);
}

.admin-footer-sep {
  color: var(--text-tertiary);
  font-size: 0.75rem;
}

.admin-storage-note {
  margin: 0 0 10px;
  font-size: 0.8125rem;
  line-height: 1.5;
  text-align: center;
  color: var(--text-tertiary);
}

.admin-gate {
  max-width: 420px;
  margin: 48px auto 0;
}

.admin-login-note {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  text-align: center;
  display: grid;
  gap: 6px;
}

.admin-login-note-main {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.admin-login-note-ps {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.admin-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
}

.admin-card h2 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}

.admin-card > p.admin-muted {
  margin-bottom: 16px;
}

.admin-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.admin-field label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.admin-field input:not([type="checkbox"]):not([type="file"]),
.admin-field textarea,
.admin-field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.admin-field textarea {
  min-height: 96px;
  resize: vertical;
}

.admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
  align-items: center;
}

.admin-actions-end {
  justify-content: flex-end;
}

.admin-registry-note {
  margin: -4px 0 12px;
}

.admin-registry-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.admin-registry-import {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.admin-registry-import .admin-file-name {
  flex: 1 1 12rem;
  min-width: 0;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.admin-import-card {
  width: min(480px, 100%);
}

.admin-import-duplicates {
  margin: 12px 0;
  padding: 10px 12px;
  max-height: 160px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.admin-import-mode {
  margin: 0;
  padding: 0;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.admin-import-mode legend {
  margin-bottom: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
}

.admin-import-mode-option {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.admin-import-mode-option input {
  margin-top: 3px;
  accent-color: var(--blue);
}

.admin-section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 12px;
  margin-bottom: 12px;
}

.admin-section-head h2 {
  margin: 0;
}

.admin-inline-meta {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  line-height: 1.4;
}

.admin-toolbar-row {
  --toolbar-control-h: 40px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.admin-toolbar-row .admin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--toolbar-control-h);
  box-sizing: border-box;
  padding: 0 14px;
  line-height: 1.2;
  white-space: nowrap;
}

.admin-toolbar-row .admin-file-name {
  flex: 1 1 12rem;
  min-width: 0;
  margin: 0;
  display: flex;
  align-items: center;
  height: var(--toolbar-control-h);
  box-sizing: border-box;
  padding: 0 12px;
  line-height: 1.3;
}

.admin-write-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.admin-write-card-head {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.admin-write-card-head h2 {
  margin: 0;
  font-size: 1.125rem;
}

.admin-write-usage {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  line-height: 1.4;
}

.admin-write-segments {
  display: flex;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg);
  isolation: isolate;
}

.admin-write-seg {
  flex: 1;
  min-width: 0;
  margin: 0;
  cursor: pointer;
  user-select: none;
}

.admin-write-seg input[type="radio"],
.admin-write-seg input[type="checkbox"] {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.admin-write-seg-label {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 6px;
  border-right: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease;
}

.admin-write-seg:last-child .admin-write-seg-label {
  border-right: none;
}

.admin-write-seg:hover .admin-write-seg-label {
  background: color-mix(in srgb, var(--blue) 6%, var(--bg));
  color: var(--text);
}

.admin-write-seg:has(input:checked) .admin-write-seg-label {
  background: color-mix(in srgb, var(--blue) 18%, var(--card));
  color: var(--blue);
}

.admin-write-seg:has(input:focus-visible) .admin-write-seg-label {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

.admin-write-cta {
  width: 100%;
  padding: 13px 20px;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
}

.admin-btn {
  appearance: none;
  border: none;
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background: var(--blue);
  color: #fff;
  transition: background 0.15s ease;
}

.admin-btn:hover {
  background: var(--blue-hover);
}

.admin-btn.secondary {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
}

.admin-btn.secondary:hover {
  background: var(--surface-hover);
}

.admin-btn.danger {
  background: #e5484d;
}

.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.admin-tab {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 8px 14px;
  font: inherit;
  cursor: pointer;
}

.admin-tab.active {
  border-color: var(--blue);
  background: var(--blue-light);
  color: var(--blue);
  font-weight: 600;
}

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

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.admin-table th,
.admin-table td {
  border-bottom: 1px solid var(--border);
  padding: 12px 8px;
  text-align: left;
  vertical-align: middle;
}

.admin-table th {
  color: var(--text-secondary);
  font-weight: 600;
}

.status-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-pending { background: var(--orange-bg); color: var(--orange); }
.status-done { background: var(--green-bg); color: var(--green); }
.status-partial { background: var(--blue-light); color: var(--blue); }
.status-error { background: rgba(229, 72, 77, 0.12); color: #e5484d; }
.status-in_progress { background: var(--blue-light); color: var(--blue); }

.admin-output {
  white-space: pre-wrap;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 0.875rem;
  line-height: 1.6;
  max-height: 420px;
  overflow: auto;
}

.admin-upload-log {
  margin-top: 12px;
  max-height: 160px;
  font-size: 0.8125rem;
  color: #e5484d;
  border-color: rgba(229, 72, 77, 0.35);
  background: rgba(229, 72, 77, 0.06);
}

.admin-muted {
  color: var(--text-tertiary);
  font-size: 0.85rem;
  line-height: 1.5;
}

.admin-error {
  color: #e5484d;
  font-size: 0.875rem;
  margin-top: 8px;
}

/* 파일 선택 — 네이티브 input 숨김 */
.admin-file-input {
  position: absolute;
  width: 0.1px;
  height: 0.1px;
  opacity: 0;
  overflow: hidden;
  z-index: -1;
}

.admin-file-picker {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 4px;
}

.admin-file-picker-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.admin-file-name {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 0.875rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-file-name.has-file {
  border-style: solid;
  color: var(--text);
  border-color: var(--blue);
  background: var(--blue-light);
}

.admin-file-name.is-invalid {
  border-style: solid;
  color: #e5484d;
  border-color: #e5484d;
  background: rgba(229, 72, 77, 0.08);
}

.admin-sample-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.admin-sample-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--blue);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.admin-sample-links a:hover {
  background: var(--blue-light);
  border-color: var(--blue);
}

.admin-help {
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.admin-help code {
  font-size: 0.75rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--card);
  border: 1px solid var(--border);
}

/* 체크박스 옵션 */
.admin-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 16px 0;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg);
  cursor: pointer;
  user-select: none;
}

.admin-option input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  flex-shrink: 0;
  accent-color: var(--blue);
  cursor: pointer;
}

.admin-option-radio {
  transition: border-color 0.15s ease, background 0.15s ease;
}

.admin-option-radio:has(input:checked) {
  border-color: var(--blue);
  background: var(--blue-light);
}

.admin-option input[type="radio"] {
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  flex-shrink: 0;
  accent-color: var(--blue);
  cursor: pointer;
}

.admin-write-mode {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 0 4px;
}

.admin-subheading {
  font-size: 0.95rem;
  margin: 16px 0 8px;
}

.admin-option-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.admin-option-text strong {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.admin-option-text span {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

.admin-textarea {
  width: 100%;
  min-height: 96px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  line-height: 1.6;
  resize: vertical;
}

.admin-field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
  margin-bottom: 4px;
}

.admin-field-row .admin-field {
  margin-bottom: 0;
}

.admin-field-label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* 학생 등록: 이름 · 학년 · 반 · 번호 — 4열 동일 너비 한 줄 */
.admin-student-meta {
  --student-meta-control-h: 42px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
}

.admin-student-meta-col {
  min-width: 0;
}

.admin-student-meta .admin-field {
  margin-bottom: 0;
  gap: 8px;
}

.admin-student-meta .admin-field-label,
.admin-student-meta .admin-field > label {
  margin-bottom: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.admin-student-meta-col input:not([type="hidden"]) {
  width: 100%;
  height: var(--student-meta-control-h);
  padding: 0 12px;
  box-sizing: border-box;
}

.admin-student-meta .admin-meta-dropdown {
  width: 100%;
}

.admin-student-meta .admin-meta-trigger,
.admin-student-meta .admin-meta-trigger-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  width: 100%;
  min-width: 0;
  height: var(--student-meta-control-h);
  padding: 0 12px;
  box-sizing: border-box;
}

.admin-student-meta .admin-meta-trigger::after {
  content: "▾";
  font-size: 0.625rem;
  line-height: 1;
  opacity: 0.45;
  flex-shrink: 0;
}

.admin-student-meta .admin-meta-trigger-input::after {
  content: none;
}

.admin-student-meta .admin-grade-pick {
  display: flex;
  width: 100%;
  height: var(--student-meta-control-h);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg);
  gap: 0;
  isolation: isolate;
}

.admin-student-meta .admin-grade-btn {
  position: relative;
  flex: 1;
  min-width: 0;
  width: auto;
  height: 100%;
  padding: 0;
  margin: 0;
  border: none;
  border-radius: 0;
  border-right: 1px solid var(--border);
  background: transparent;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  outline: none;
  box-shadow: none;
  -webkit-tap-highlight-color: transparent;
}

.admin-student-meta .admin-grade-btn:last-child {
  border-right: none;
}

.admin-student-meta .admin-grade-btn:hover {
  background: color-mix(in srgb, var(--blue) 6%, var(--bg));
  color: var(--text);
}

.admin-student-meta .admin-grade-btn:focus-visible {
  z-index: 1;
  background: color-mix(in srgb, var(--blue) 10%, var(--bg));
}

.admin-student-meta .admin-grade-btn.active {
  z-index: 1;
  background: color-mix(in srgb, var(--blue) 20%, var(--card));
  color: var(--blue);
  border: none;
  border-right: 1px solid var(--border);
  box-shadow: none;
}

.admin-student-meta .admin-grade-btn.active:last-child {
  border-right: none;
}

.admin-grade-pick {
  display: grid;
  grid-template-columns: repeat(3, minmax(44px, 1fr));
  gap: 8px;
  width: max-content;
  max-width: 100%;
}

.admin-grade-btn {
  padding: 12px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-secondary);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.admin-grade-btn:hover {
  border-color: var(--blue);
  color: var(--text);
}

.admin-grade-btn.active {
  border-color: var(--blue);
  background: color-mix(in srgb, var(--blue) 14%, var(--card));
  color: var(--blue);
}

.admin-samples-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.admin-samples-page-size {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
}

.admin-select-sm {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--text);
  font: inherit;
  font-size: 0.8125rem;
}

.admin-samples-page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.admin-page-btn {
  min-width: 2rem;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
}

.admin-page-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.admin-page-btn.active {
  border-color: var(--blue);
  background: color-mix(in srgb, var(--blue) 12%, var(--card));
  color: var(--blue);
}

.admin-page-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.admin-page-ellipsis {
  color: var(--text-tertiary);
  font-size: 0.8125rem;
  padding: 0 2px;
}

.admin-meta-dropdown {
  position: relative;
  width: max-content;
  max-width: 100%;
}

.admin-meta-trigger-wrap {
  width: 100%;
}

.admin-meta-trigger,
.admin-meta-trigger-input {
  width: 100%;
  min-width: 108px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.admin-meta-trigger:hover,
.admin-meta-trigger[aria-expanded="true"] {
  border-color: var(--blue);
  color: var(--blue);
}

.admin-meta-trigger-input {
  cursor: text;
}

.admin-meta-trigger-input:focus {
  outline: none;
  border-color: var(--blue);
  background: color-mix(in srgb, var(--blue) 8%, var(--card));
}

.admin-meta-drop {
  position: absolute;
  z-index: 20;
  top: calc(100% + 6px);
  left: 0;
  min-width: 100%;
  width: max-content;
  max-width: min(220px, 92vw);
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--card);
  box-shadow: var(--shadow);
  display: none;
  grid-template-columns: repeat(5, minmax(34px, 1fr));
  gap: 6px;
}

.admin-meta-drop:not([hidden]) {
  display: grid;
}

.admin-meta-btn {
  padding: 7px 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.admin-meta-btn:hover {
  border-color: var(--blue);
  color: var(--text);
}

.admin-meta-btn.active {
  border-color: var(--blue);
  background: color-mix(in srgb, var(--blue) 14%, var(--card));
  color: var(--blue);
}

.admin-meta-btn-custom {
  grid-column: 1 / -1;
  padding: 8px 6px;
  font-size: 0.75rem;
}

.admin-samples-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--card);
}

.admin-samples-toolbar-left,
.admin-samples-toolbar-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.admin-samples-count {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.admin-samples-selected {
  font-size: 0.8125rem;
  color: var(--blue);
  font-weight: 600;
}

.admin-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.admin-check-row {
  gap: 0;
  padding: 4px;
  border-radius: 6px;
}

.admin-check-row:hover {
  background: var(--surface-hover);
}

.admin-check-input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.admin-check-box {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.admin-check-input:focus-visible + .admin-check-box {
  box-shadow: 0 0 0 3px var(--blue-light);
}

.admin-check-input:checked + .admin-check-box {
  background: var(--blue);
  border-color: var(--blue);
}

.admin-check-input:checked + .admin-check-box::after {
  content: "";
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.admin-check-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.admin-sample-table .sample-select-cell {
  width: 44px;
  text-align: center;
  vertical-align: middle;
}

.admin-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(8, 12, 18, 0.62);
  backdrop-filter: blur(6px);
}

.admin-modal-backdrop[hidden] {
  display: none !important;
}

.admin-modal {
  width: min(100%, 440px);
  padding: 32px 28px 28px;
  border-radius: var(--radius-lg);
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
  text-align: center;
}

.admin-modal-wide {
  width: min(100%, 720px);
  max-height: min(88vh, 820px);
  overflow: auto;
  text-align: left;
}

.admin-modal-icon {
  margin-bottom: 12px;
}

.admin-modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.admin-modal-message {
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.admin-modal-model {
  display: inline-block;
  margin: 14px 0 16px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.admin-modal-model[hidden] {
  display: none;
}

.admin-modal-hint {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  line-height: 1.5;
  margin-top: 12px;
}

.admin-modal-elapsed {
  margin-top: 10px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.admin-busy-spinner {
  width: 44px;
  height: 44px;
  margin: 0 auto;
  border: 3px solid var(--border);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: admin-spin 0.9s linear infinite;
}

@keyframes admin-spin {
  to { transform: rotate(360deg); }
}

.admin-busy-bar {
  height: 8px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.admin-busy-bar-fill {
  display: block;
  height: 100%;
  width: 35%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), #6ea8ff);
}

.admin-busy-bar-fill.is-indeterminate {
  animation: admin-busy-indeterminate 1.4s ease-in-out infinite;
}

@keyframes admin-busy-indeterminate {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(320%); }
}

body.admin-is-busy {
  overflow: hidden;
}

body.admin-is-busy .admin-btn:not(.admin-busy-allowed),
body.admin-is-busy .admin-tab {
  pointer-events: none;
  opacity: 0.65;
}

.admin-sample-table .admin-btn-sm {
  white-space: nowrap;
}

.admin-row-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  justify-content: flex-end;
}

.admin-student-table .sample-select-cell {
  width: 42px;
  text-align: center;
  vertical-align: middle;
}

.admin-student-table .sample-select-cell .admin-check-row {
  display: inline-flex;
  vertical-align: middle;
}

.admin-sample-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.admin-btn-sm {
  padding: 6px 10px;
  font-size: 0.8125rem;
}

.admin-advanced summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text-secondary);
}

.admin-advanced[open] summary {
  margin-bottom: 4px;
}

#detailEditor .admin-field label {
  font-weight: 600;
  color: var(--text);
}

.admin-field-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.admin-field-head label {
  margin: 0;
}

.inspect-char-count {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-align: right;
  line-height: 1.35;
  max-width: min(100%, 420px);
}

.inspect-char-count.is-warn {
  color: #b45309;
  font-weight: 600;
}

.inspect-char-count.is-error {
  color: #b91c1c;
  font-weight: 600;
}

.admin-inspect-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
}

.admin-inspect-badge.ok {
  background: color-mix(in srgb, #16a34a 14%, var(--card));
  color: #15803d;
}

.admin-inspect-badge.warn {
  background: color-mix(in srgb, #d97706 16%, var(--card));
  color: #b45309;
}

.admin-inspect-badge.fail {
  background: color-mix(in srgb, #dc2626 14%, var(--card));
  color: #b91c1c;
}

.admin-inspect-badge.pending {
  background: var(--bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.admin-inspect-summary {
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.admin-inspect-summary--compact {
  margin-top: 12px;
  margin-bottom: 0;
  padding: 10px 12px;
}

.admin-inspect-summary-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
}

.admin-inspect-summary-bar h3 {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.4;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  flex: 0 0 auto;
}

.admin-inspect-pills {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  flex: 1 1 auto;
}

.admin-inspect-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  line-height: 1.3;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text-secondary);
}

.admin-inspect-pill .admin-inspect-check-icon {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  font-size: 0.625rem;
}

.admin-inspect-pill.status-pass .admin-inspect-check-icon {
  background: #e8f7ee;
  color: #1f7a3f;
}

.admin-inspect-pill.status-warn .admin-inspect-check-icon {
  background: #fff6e8;
  color: #a05a00;
}

.admin-inspect-pill.status-fail .admin-inspect-check-icon {
  background: #fdecec;
  color: #b42318;
}

.admin-inspect-pill.status-skip .admin-inspect-check-icon,
.admin-inspect-pill.status-pending .admin-inspect-check-icon {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.admin-inspect-ok-note {
  margin: 8px 0 0;
  font-size: 0.8125rem;
}

#panelDetail #detailWritingTips {
  margin-bottom: 12px;
}

#panelDetail #detailEditor {
  margin-bottom: 0;
}

.admin-inspect-checklist {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.admin-inspect-check-item,
.admin-busy-check-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
}

.admin-inspect-check-icon {
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
}

.admin-inspect-check-body {
  display: grid;
  gap: 2px;
  font-size: 0.875rem;
}

.admin-inspect-check-item.status-pass .admin-inspect-check-icon,
.admin-busy-check-item.status-pass .admin-inspect-check-icon {
  background: #e8f7ee;
  color: #1f7a3f;
}

.admin-inspect-check-item.status-warn .admin-inspect-check-icon,
.admin-busy-check-item.status-active .admin-inspect-check-icon {
  background: #fff6e8;
  color: #a05a00;
}

.admin-inspect-check-item.status-fail .admin-inspect-check-icon {
  background: #fdecec;
  color: #b42318;
}

.admin-inspect-check-item.status-skip .admin-inspect-check-icon,
.admin-inspect-check-item.status-pending .admin-inspect-check-icon,
.admin-busy-check-item.status-pending .admin-inspect-check-icon {
  background: var(--bg-secondary);
  color: var(--text-secondary);
}

.admin-busy-checklist {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
  text-align: left;
}

.admin-busy-check-item {
  font-size: 0.875rem;
}

.admin-busy-check-item.status-active {
  border-color: var(--blue);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.15);
}

.admin-inspect-summary--compact .admin-inspect-issues {
  margin-top: 8px;
}

.admin-inspect-summary--compact .admin-inspect-issues li {
  padding: 4px 0;
  font-size: 0.8125rem;
}

.admin-inspect-issues {
  list-style: none;
  margin: 0;
  padding: 0;
}

.admin-inspect-issues li {
  padding: 6px 0;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  line-height: 1.5;
}

.admin-inspect-issues li:first-child {
  border-top: none;
}

.admin-inspect-issues .issue-section {
  font-weight: 600;
  margin-right: 6px;
}

.admin-inspect-issues .issue-error {
  color: #b91c1c;
}

.admin-inspect-issues .issue-warning {
  color: #b45309;
}

.admin-inspect-issues .issue-info {
  color: var(--text-secondary);
}

.inspect-field-issues {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  font-size: 0.8125rem;
}

.inspect-field-issues li {
  color: #b45309;
  margin-top: 4px;
}

.inspect-field-issues li.issue-error {
  color: #b91c1c;
}

.admin-header-btn {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.admin-header-btn:hover {
  color: var(--text);
  border-color: var(--blue);
}

.admin-memo-panels {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 16px 0;
}

.admin-memo-panel {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  padding: 0 12px 12px;
}

.admin-memo-panel[hidden] {
  display: none;
}

.admin-memo-panel > summary {
  cursor: pointer;
  font-weight: 600;
  padding: 12px 0 8px;
  list-style: none;
}

.admin-memo-panel > summary::-webkit-details-marker {
  display: none;
}

.admin-memo-panel > summary::before {
  content: "▸ ";
  display: inline-block;
  transition: transform 0.15s ease;
}

.admin-memo-panel[open] > summary::before {
  transform: rotate(90deg);
}

.admin-guide-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: rgba(0, 0, 0, 0.45);
}

.admin-guide-backdrop[hidden] {
  display: none;
}

body.admin-guide-open {
  overflow: hidden;
}

.admin-guide-card {
  width: min(480px, 100%);
  max-height: min(85vh, 560px);
  overflow: auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px 22px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
}

.admin-guide-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.admin-guide-header h2 {
  margin: 0;
  font-size: 1.125rem;
}

.admin-guide-close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.admin-guide-close:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--border) 40%, var(--bg));
}

.admin-guide-flow {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 16px;
}

.admin-guide-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.admin-guide-step:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.admin-guide-step-num {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--blue) 14%, var(--card));
  color: var(--blue);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1;
}

.admin-guide-step-body {
  flex: 1;
  min-width: 0;
}

.admin-guide-step-body strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.admin-guide-step-body p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--text-secondary);
}

.admin-guide-step-body em {
  font-style: normal;
  font-weight: 600;
  color: var(--blue);
}

.admin-guide-notes {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
}

.admin-guide-notes-title {
  margin: 0 0 8px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.admin-guide-notes-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.admin-guide-notes-list li + li {
  margin-top: 6px;
}

.admin-guide-steps {
  margin: 0 0 16px;
  padding-left: 1.25rem;
  line-height: 1.6;
}

.admin-guide-steps li + li {
  margin-top: 8px;
}

.admin-guide-tips {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.55;
}

.admin-guide-tips li + li {
  margin-top: 6px;
}

.admin-privacy-card {
  max-width: 36rem;
}

.admin-privacy-body h3 {
  margin: 16px 0 8px;
  font-size: 0.9375rem;
}

.admin-privacy-body h3:first-of-type {
  margin-top: 8px;
}

.admin-subheading {
  font-size: 0.9375rem;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--text);
}

.admin-required {
  color: #e5534b;
  font-weight: 600;
}

.admin-help {
  margin: 8px 0 0;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.admin-subheading-sm {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 12px 0 6px;
  color: var(--text-secondary);
}

.admin-curriculum-box {
  margin-top: 12px;
  padding: 12px 14px;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--blue) 4%, var(--bg));
}

.admin-curriculum-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.admin-curriculum-list li {
  padding: 8px 0;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.admin-curriculum-list li:first-child {
  border-top: none;
  padding-top: 0;
}

.admin-curriculum-list .std-code {
  font-weight: 600;
  color: var(--blue);
  margin-right: 6px;
}

.admin-writing-tips {
  margin-top: 12px;
  margin-bottom: 0;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--border);
}

.admin-writing-tips summary {
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.admin-writing-tips ul {
  margin: 8px 0 0;
  padding-left: 1.1rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.admin-writing-tips li + li {
  margin-top: 4px;
}

@media (max-width: 640px) {
  .admin-table {
    display: block;
    overflow-x: auto;
  }

  .admin-file-picker-row {
    flex-direction: column;
    align-items: stretch;
  }

  .admin-field-row {
    grid-template-columns: 1fr 1fr;
  }

  .admin-student-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 업데이트 내역 (changelog) */
.admin-changelog-page {
  max-width: 720px;
}

.admin-changelog-current {
  margin-bottom: 16px;
  text-align: center;
}

.admin-changelog-version-label {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-bottom: 4px;
}

.admin-changelog-version {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--blue);
  margin-bottom: 6px;
}

.admin-changelog-release {
  margin-bottom: 16px;
}

.admin-changelog-release-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

.admin-changelog-release-head h2 {
  font-size: 1.25rem;
  margin: 0;
}

.admin-changelog-release-head time {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  white-space: nowrap;
}

.admin-changelog-summary {
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.admin-changelog-section + .admin-changelog-section {
  margin-top: 14px;
}

.admin-changelog-section h3 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 8px;
}

.admin-changelog-list {
  margin: 0;
  padding-left: 1.15rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.admin-changelog-list li + li {
  margin-top: 6px;
}

.admin-changelog-list strong {
  color: var(--text);
  font-weight: 600;
}

.admin-changelog-list code {
  font-size: 0.85em;
  padding: 1px 5px;
  border-radius: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
}

.admin-changelog-foot {
  margin-top: 8px;
  font-size: 0.8125rem;
  line-height: 1.6;
  text-align: center;
}

.admin-changelog-toc {
  margin-bottom: 16px;
}

.admin-changelog-toc-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}

.admin-changelog-toc-list {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.admin-changelog-toc-list a {
  color: var(--blue);
  text-decoration: none;
  font-weight: 600;
}

.admin-changelog-toc-list a:hover {
  text-decoration: underline;
}

.admin-changelog-release-muted {
  opacity: 0.92;
}

.admin-changelog-note {
  margin-top: 10px;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  font-style: italic;
}

.admin-version-link {
  color: var(--text-tertiary);
  text-decoration: none;
  font-weight: 600;
}

.admin-version-link:hover {
  color: var(--blue);
}

/* 상세 편집 — 항목별 AI 도구 */
.detail-field-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.detail-field-action[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.inspect-field-issues li.inspect-issue-clickable {
  cursor: pointer;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, currentColor 35%, transparent);
  text-underline-offset: 2px;
}

.inspect-field-issues li.inspect-issue-clickable:hover {
  opacity: 0.85;
}

.detail-field.inspect-field-active textarea {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--blue) 18%, transparent);
}

.inspect-field-highlight textarea {
  animation: inspect-field-pulse 1.2s ease;
}

@keyframes inspect-field-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--blue) 0%, transparent);
  }
  50% {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 22%, transparent);
  }
}

.admin-inspect-issues li.inspect-issue-jump {
  cursor: pointer;
}

.admin-inspect-issues li.inspect-issue-jump:hover {
  opacity: 0.88;
}