:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --line: #d9e0ea;
  --line-strong: #b9c5d4;
  --text: #1d2733;
  --muted: #657386;
  --navy: #172033;
  --blue: #246bfe;
  --blue-soft: #e8efff;
  --teal: #009b8e;
  --amber: #d88a00;
  --red: #d64545;
  --green: #168a4a;
  --shadow: 0 10px 30px rgba(25, 39, 70, 0.08);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  font-size: 14px;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 248px;
  color: #e8eef8;
  background: var(--navy);
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 8px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: #ffffff;
  color: var(--navy);
  font-weight: 800;
  font-size: 20px;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  margin-bottom: 3px;
}

.brand small {
  color: #aeb8c9;
  font-size: 12px;
}

.nav {
  display: grid;
  gap: 8px;
  margin-top: 20px;
}

.nav-item {
  border: 0;
  border-radius: var(--radius);
  color: #d9e1ee;
  background: transparent;
  padding: 12px 14px;
  text-align: left;
}

.nav-item:hover,
.nav-item.active {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.12);
}

.nav-item[aria-busy="true"] {
  cursor: wait;
  opacity: 0.68;
}

.nav-item[aria-busy="true"]::before {
  display: inline-block;
  width: 0.8em;
  height: 0.8em;
  margin-right: 6px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  content: "";
  vertical-align: -0.12em;
  animation: button-loading 700ms linear infinite;
}

.main {
  flex: 1;
  min-width: 0;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 24px 32px 18px;
  background: rgba(245, 247, 251, 0.9);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: 26px;
  line-height: 1.25;
}

h2,
h3 {
  margin: 0;
}

.content {
  padding: 24px 32px 42px;
}

.status-pill,
.tag,
.approval {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  white-space: nowrap;
}

.status-pill {
  color: var(--blue);
  background: var(--blue-soft);
  border: 1px solid #cfdbff;
}

.tag {
  color: #36506c;
  background: #eef3f8;
}

.tag.interview {
  color: #744800;
  background: #fff4db;
}

.tag.mandarin {
  color: #00685f;
  background: #dcf7f2;
}

.tag.warning {
  color: #8a5a00;
  background: #fff4db;
}

.approval.pending {
  color: #8a5a00;
  background: #fff4db;
}

.approval.approved {
  color: #0d6f3a;
  background: #def7e9;
}

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

.panel + .panel {
  margin-top: 18px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.panel-title {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.order-actions {
  display: inline-flex;
  gap: 4px;
  margin-right: 6px;
}

.order-btn {
  min-width: 28px;
  padding: 4px 7px;
  font-weight: 700;
}

.import-result {
  display: grid;
  gap: 14px;
  min-width: min(980px, 78vw);
}

.import-result-head,
.import-source-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.import-result-status,
.import-source {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 700;
}

.import-result-status.success,
.import-source.success {
  color: #0d6f3a;
  background: #def7e9;
}

.import-result-status.warning,
.import-source.warning {
  color: #8a5a00;
  background: #fff4db;
}

.import-errors,
.import-warnings {
  border-left: 3px solid var(--amber);
  color: #704d00;
  background: #fffaf0;
  padding: 10px 12px;
}

.import-warnings {
  border-left-color: var(--blue);
  color: #245080;
  background: #f2f7ff;
}

.import-errors strong,
.import-warnings strong {
  display: block;
  margin-bottom: 5px;
}

.import-errors ul,
.import-warnings ul {
  margin: 0;
  padding-left: 20px;
}

.import-filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.import-filter-group {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
}

.import-filter-subtypes {
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

.import-filter {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 10px;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: 12px;
}

.import-filter:hover,
.import-filter.active {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-soft);
}

.import-filter-count {
  min-width: 18px;
  padding: 1px 5px;
  border-radius: 999px;
  color: inherit;
  background: rgba(36, 107, 254, 0.1);
  font-size: 11px;
  text-align: center;
}

.import-preview-table {
  max-height: 52vh;
  overflow: auto;
}

.import-group-row th {
  padding-top: 14px;
  padding-bottom: 8px;
  color: var(--navy);
  background: #eef4ff;
}

.import-group-row th span {
  margin-right: 10px;
  font-size: 13px;
}

.import-group-row th small {
  color: var(--muted);
  font-weight: 400;
}

.import-answer-missing {
  color: #8a5a00;
  font-size: 12px;
}

.import-content-cell {
  min-width: 340px;
  white-space: normal;
}

.import-content-cell pre {
  margin: 0;
  white-space: pre-wrap;
  font: inherit;
  line-height: 1.55;
}

.import-detail-label {
  display: inline-block;
  margin-right: 8px;
  color: var(--muted);
  font-weight: 400;
}

.import-detail {
  margin-top: 6px;
  color: var(--muted);
}

.duplicate-import-dialog {
  display: grid;
  gap: 16px;
  min-width: min(620px, 76vw);
}

.duplicate-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-left: 4px solid var(--amber);
  background: #fff8e8;
}

.duplicate-alert-mark {
  display: inline-grid;
  flex: 0 0 28px;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: #ffffff;
  background: var(--amber);
  font-weight: 800;
}

.duplicate-alert strong {
  display: block;
  color: #5c4300;
  font-size: 15px;
}

.duplicate-alert p {
  margin: 4px 0 0;
  color: #80662a;
  font-size: 13px;
}

.duplicate-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.duplicate-stats > div {
  display: grid;
  gap: 2px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.duplicate-stats span,
.duplicate-stats small {
  color: var(--muted);
  font-size: 12px;
}

.duplicate-stats strong {
  color: var(--text);
  font-size: 22px;
  line-height: 1.1;
}

.duplicate-list-title {
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.import-duplicate-list {
  max-height: 38vh;
  margin: -8px 0 0;
  padding: 0;
  overflow: auto;
  list-style: none;
  border-top: 1px solid var(--line);
}

.duplicate-item {
  padding: 13px 4px;
  border-bottom: 1px solid var(--line);
}

.duplicate-item-head,
.duplicate-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px 10px;
}

.duplicate-source,
.duplicate-item-number {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.duplicate-source.existing {
  color: #245080;
  background: #e6f0ff;
}

.duplicate-source.upload {
  color: #6d4c00;
  background: #fff0c7;
}

.duplicate-item-number {
  color: var(--muted);
  background: var(--surface-soft);
}

.duplicate-context {
  margin: 8px 0 6px;
  color: var(--text);
  line-height: 1.55;
  word-break: break-word;
}

.duplicate-options {
  color: var(--text);
  font-size: 13px;
}

.duplicate-field-label {
  margin-right: 8px;
  color: var(--muted);
}

.duplicate-meta {
  margin-top: 8px;
  color: var(--muted);
  font-size: 11px;
}

.duplicate-footnote {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.import-detail strong {
  color: var(--text);
  margin-right: 6px;
}

.panel-title h2 {
  font-size: 18px;
}

.panel-title p {
  margin: 0;
  color: var(--muted);
}

.panel-body {
  padding: 20px;
}

.placeholder {
  min-height: 360px;
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
  background:
    linear-gradient(90deg, rgba(36, 107, 254, 0.08), transparent 55%),
    linear-gradient(180deg, rgba(0, 155, 142, 0.08), transparent 62%),
    var(--surface);
}

.placeholder h2 {
  color: var(--text);
  margin-bottom: 8px;
}

.toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.filters,
.form-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: end;
}

.field {
  display: grid;
  gap: 6px;
  min-width: 160px;
}

.field.grow {
  min-width: 280px;
  flex: 1;
}

label {
  color: var(--muted);
  font-size: 12px;
}

input,
select,
textarea {
  width: 100%;
  color: var(--text);
  background: #ffffff;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 9px 10px;
  outline: none;
}

textarea {
  min-height: 72px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(36, 107, 254, 0.12);
}

.btn {
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--text);
  background: #ffffff;
  min-height: 36px;
}

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

.btn[aria-busy="true"] {
  cursor: wait;
  opacity: 0.68;
}

.btn[aria-busy="true"]::before {
  display: inline-block;
  width: 0.8em;
  height: 0.8em;
  margin-right: 6px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  content: "";
  vertical-align: -0.12em;
  animation: button-loading 700ms linear infinite;
}

@keyframes button-loading {
  to { transform: rotate(360deg); }
}

.btn.primary {
  border-color: var(--blue);
  color: #ffffff;
  background: var(--blue);
}

.btn.primary:hover {
  color: #ffffff;
  background: #1c59d8;
}

.btn.danger {
  color: var(--red);
  border-color: #f0b8b8;
}

.btn.success {
  color: var(--green);
  border-color: #a8d9bf;
}

.btn.ghost {
  background: var(--surface-soft);
}

.btn.small {
  min-height: 30px;
  padding: 5px 9px;
  font-size: 12px;
}

.btn-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
  color: var(--muted);
  font-size: 12px;
}

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

.pagination-controls label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pagination-controls select {
  width: auto;
  min-width: 64px;
  padding: 6px 8px;
}

.pagination-controls .btn:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.panel-header .btn-row > select {
  width: auto;
  min-width: 180px;
  max-width: 240px;
}

.mandarin-question-bank-panel .panel-header {
  align-items: flex-start;
}

.mandarin-question-bank-panel .panel-title {
  flex: 1 1 520px;
}

.mandarin-header-controls {
  display: grid;
  flex: 0 1 640px;
  gap: 12px;
  width: min(100%, 640px);
}

.mandarin-filter-row {
  display: grid;
  grid-template-columns: minmax(180px, 0.9fr) minmax(240px, 1.2fr);
  gap: 10px;
  align-items: end;
}

.mandarin-header-filter,
.mandarin-choice-filter {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.mandarin-header-filter > span,
.mandarin-choice-filter > span {
  color: var(--muted);
  font-size: 12px;
}

.field-hint {
  color: var(--muted);
  font-weight: 400;
}

.mandarin-header-filter select,
.mandarin-choice-filter select {
  width: 100%;
  min-width: 0;
}

.mandarin-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-start;
}

.refresh-bar {
  display: flex;
  gap: 10px;
  align-items: center;
}

.refresh-time {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 760px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 12px 11px;
  text-align: left;
  vertical-align: middle;
}

th {
  color: #48566a;
  background: var(--surface-soft);
  font-weight: 700;
  white-space: nowrap;
}

tr:hover td {
  background: #fbfdff;
}

.bank-row.dragging td {
  opacity: 0.55;
}

.bank-row.drag-over td {
  background: #eef4ff;
  border-top: 2px solid var(--blue);
}

.drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  border: 1px dashed var(--line-strong);
  border-radius: 6px;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: 12px;
  line-height: 26px;
  cursor: grab;
  user-select: none;
}

.drag-handle:active {
  cursor: grabbing;
}

td.actions {
  white-space: nowrap;
}

.truncate-cell {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: help;
}

.dialog-context {
  width: 100%;
  min-height: 120px;
}

.dialog-card.wide {
  width: min(920px, 100%);
  max-height: 86vh;
  overflow: auto;
}

.pack-caption {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
}

.pack-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
}

.pack-toolbar select {
  margin-left: 6px;
}

.pack-hint {
  font-size: 12px;
  color: var(--muted);
}

.pack-grid {
  display: grid;
  gap: 8px;
  margin-bottom: 10px;
}

.pack-grid.multi {
  grid-template-columns: repeat(var(--cols, 10), minmax(0, 1fr));
}

.pack-grid.auto {
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
}

.pack-grid.multi .pack-row,
.pack-grid.auto .pack-row {
  grid-template-columns: 18px 1fr;
  gap: 4px;
}

.pack-grid.multi .pack-row [data-pack-remove],
.pack-grid.auto .pack-row [data-pack-remove] {
  display: none;
}

.pack-grid.multi .pack-num,
.pack-grid.auto .pack-num {
  font-size: 10px;
}

.pack-row {
  display: grid;
  grid-template-columns: 28px 1fr 34px;
  gap: 8px;
  align-items: center;
}

.pack-row.three {
  grid-template-columns: 28px 1fr 1fr 1fr 34px;
}

.pack-row.pairs {
  grid-template-columns: 28px 1fr 1fr 34px;
}

.pack-row.pack-head {
  color: var(--muted);
  font-size: 12px;
}

.pack-num {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

/* 普通话逐题明细：按模块分块 */
.module-blocks {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.module-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 12px 14px;
}

.module-block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin-bottom: 10px;
}

.module-block-name {
  font-size: 14px;
  font-weight: 600;
}

.module-count {
  margin-left: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.module-block-scores {
  display: flex;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
}

.module-block-scores strong {
  color: var(--text);
}

.module-subtitle {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 12px 0 6px;
  font-size: 13px;
  font-weight: 600;
}

.module-subtitle span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

/* 单字/词语的紧凑格子矩阵 */
.item-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 6px;
}

.matrix-cell {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 13px;
  white-space: nowrap;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.matrix-cell:hover {
  border-color: var(--blue);
  box-shadow: 0 2px 8px rgba(36, 107, 254, 0.16);
}

.matrix-cell.low {
  border-color: #f0c1c1;
  background: #fdf3f3;
}

.matrix-cell.low .matrix-score {
  color: var(--red);
}

.matrix-cell.mid .matrix-score {
  color: var(--amber);
}

.matrix-cell.high .matrix-score {
  color: var(--green);
}

.matrix-seq {
  color: var(--muted);
  font-size: 11px;
}

.matrix-text {
  font-weight: 600;
  flex-shrink: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.matrix-score {
  margin-left: auto;
  font-weight: 600;
}

.matrix-cell .audio-btn {
  padding: 0 5px;
}

/* 单条明细弹窗 */
.dialog-kv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px 16px;
  margin-bottom: 14px;
}

.dialog-kv small {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 12px;
}

.dialog-kv div {
  word-break: break-all;
}

.dialog-score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 8px;
}

.dialog-score {
  background: var(--surface-soft);
  border-radius: var(--radius);
  padding: 8px 10px;
  text-align: center;
}

.dialog-score small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.dialog-score strong {
  font-size: 16px;
}

.wide-table {
  min-width: 1380px;
}

.meta-grid,
.score-grid,
.summary-grid {
  display: grid;
  gap: 14px;
}

.meta-grid {
  grid-template-columns: repeat(5, minmax(160px, 1fr));
}

.summary-grid {
  grid-template-columns: repeat(4, minmax(160px, 1fr));
}

.score-grid {
  grid-template-columns: repeat(5, minmax(150px, 1fr));
}

.metric,
.score-tile,
.summary-tile {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
  padding: 14px;
}

.metric small,
.score-tile small,
.summary-tile small {
  display: block;
  color: var(--muted);
  margin-bottom: 7px;
}

.metric strong,
.summary-tile strong {
  font-size: 18px;
}

.score-tile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.score-donut {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, #ffffff 0 54%, transparent 55%),
    conic-gradient(var(--color) calc(var(--value) * 1%), #e7edf5 0);
  flex: 0 0 auto;
}

.score-value {
  display: grid;
  gap: 2px;
}

.score-value strong {
  font-size: 22px;
}

.empty-state {
  padding: 42px 20px;
  color: var(--muted);
  text-align: center;
}

.breadcrumb {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  margin-bottom: 16px;
}

.breadcrumb button {
  border: 0;
  background: transparent;
  color: var(--blue);
  padding: 0;
}

.detail-page-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.detail-page-bar .breadcrumb {
  margin-bottom: 0;
}

.spacer-sm {
  height: 14px;
}

.bank-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(260px, 1fr));
  gap: 16px;
}

.bank-choice {
  text-align: left;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  background: #ffffff;
  min-height: 150px;
}

.bank-choice:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow);
}

.bank-choice strong {
  display: block;
  font-size: 20px;
  margin-bottom: 8px;
}

.bank-choice span {
  color: var(--muted);
  line-height: 1.7;
}

.inline-input {
  min-width: 82px;
  padding: 6px 8px;
}

.score-input {
  width: 76px;
}

.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  display: none;
  max-width: 320px;
  padding: 12px 14px;
  border-radius: var(--radius);
  background: #172033;
  color: #ffffff;
  box-shadow: var(--shadow);
  z-index: 80;
}

.toast.show {
  display: block;
}

.hover-preview {
  position: fixed;
  z-index: 100;
  display: none;
  max-width: min(520px, calc(100vw - 36px));
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  background: #ffffff;
  box-shadow: var(--shadow);
  line-height: 1.65;
  pointer-events: none;
}

.audio-btn {
  min-width: 34px;
  height: 30px;
  border-radius: 6px;
  padding: 0 10px;
}

.audio-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.matrix-cell .audio-actions {
  margin-left: 4px;
}

.hidden {
  display: none !important;
}

.topbar-actions,
.sidebar-user,
.bank-tabs,
.bank-actions,
.dialog-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.language-switch {
  display: block;
  margin: 0;
}

.language-switch select {
  width: auto;
  min-width: 116px;
  min-height: 34px;
  padding: 6px 28px 6px 9px;
  color: var(--text);
  background: var(--surface);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
}

.sidebar-user {
  display: grid;
  gap: 3px;
  margin-top: auto;
  padding: 16px 8px 2px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-user strong {
  color: #ffffff;
}

.sidebar-user small {
  color: #aeb8c9;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.metric-card {
  min-height: 132px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.metric-card span,
.metric-card small {
  display: block;
  color: var(--muted);
}

.metric-card strong {
  display: block;
  margin: 12px 0 6px;
  color: var(--navy);
  font-size: 28px;
}

.provider-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.provider-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 13px;
  background: #ffffff;
}

.provider-list li + li {
  border-top: 1px solid var(--line);
}

.provider-ok { color: var(--green); }
.provider-warn { color: var(--amber); }

.score-section {
  margin-top: 18px;
}

.bank-tabs {
  margin-bottom: 16px;
}

.bank-tab {
  min-height: 36px;
  padding: 7px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--muted);
  background: #ffffff;
}

.bank-tab.active {
  border-color: var(--blue);
  color: #ffffff;
  background: var(--blue);
}

.bank-actions {
  margin-bottom: 14px;
}

.loading-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--blue);
  animation: loading-pulse 900ms ease-in-out infinite alternate;
}

@keyframes loading-pulse {
  to { opacity: 0.25; transform: scale(0.7); }
}

.login-screen {
  display: grid;
  grid-template-columns: minmax(300px, 42vw) minmax(340px, 1fr);
  min-height: 100vh;
  background: var(--bg);
}

.login-brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 64px clamp(32px, 7vw, 112px);
  color: #e8eef8;
  background: var(--navy);
}

.login-brand-mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin-bottom: 34px;
  border-radius: 8px;
  color: var(--navy);
  background: #ffffff;
  font-size: 25px;
  font-weight: 800;
}

.login-brand p,
.login-brand span {
  margin: 0;
  color: #aeb8c9;
}

.login-brand h1 {
  margin: 10px 0 9px;
  color: #ffffff;
  font-size: 34px;
}

.login-card {
  align-self: center;
  width: min(420px, calc(100% - 48px));
  margin: 0 auto;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.login-card h2 {
  margin: 0 0 24px;
  font-size: 24px;
}

.login-card label,
.dialog-form label,
.dialog-field {
  display: grid;
  gap: 7px;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 12px;
}

.login-card .btn {
  width: 100%;
  margin-top: 4px;
}

.login-card .btn + .btn {
  margin-top: 10px;
}

.dialog-layer {
  position: fixed;
  z-index: 120;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.45);
}

.dialog-card {
  width: min(460px, 100%);
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--shadow);
}

.dialog-card h2 {
  margin-bottom: 16px;
  font-size: 20px;
}

.dialog-message {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.request-loading {
  position: fixed;
  z-index: 200;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(15, 23, 42, 0.22);
  cursor: wait;
}

.request-loading-card {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 180px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow);
  font-weight: 600;
}

.request-loading-spinner {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  border: 3px solid var(--blue-soft);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: button-loading 700ms linear infinite;
}

.dialog-actions {
  justify-content: flex-end;
  margin-top: 22px;
}

@media (max-width: 1024px) {
  .sidebar {
    width: 210px;
  }

  .meta-grid,
  .summary-grid,
  .score-grid {
    grid-template-columns: repeat(2, minmax(160px, 1fr));
  }

  .metric-grid {
    grid-template-columns: repeat(2, minmax(160px, 1fr));
  }
}

@media (max-width: 760px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    position: static;
    width: 100%;
    height: auto;
  }

  .nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .topbar {
    align-items: flex-start;
    padding: 18px 18px 14px;
  }

  .content {
    padding: 18px;
  }

  .panel-header,
  .toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .mandarin-header-controls {
    width: 100%;
    flex-basis: auto;
  }

  .mandarin-question-bank-panel .panel-title {
    flex: 0 1 auto;
    width: 100%;
  }

  .mandarin-filter-row {
    grid-template-columns: 1fr;
  }

  .mandarin-action-row {
    width: 100%;
  }

  .field,
  .field.grow {
    width: 100%;
    min-width: 0;
  }

  .meta-grid,
  .summary-grid,
  .score-grid,
  .bank-switch,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .duplicate-import-dialog {
    min-width: 0;
  }

  .duplicate-stats {
    grid-template-columns: 1fr;
  }

  .login-screen {
    grid-template-columns: 1fr;
  }

  .login-brand {
    min-height: 250px;
    padding: 38px 28px;
  }

  .login-brand-mark {
    margin-bottom: 20px;
  }

  .login-card {
    margin: 28px auto;
  }
}