:root {
  --pink: #d992ac;
  --blue: #7fa9d9;
  --bg: #f6edf1;
  --surface: #fcf8fa;
  --surface-2: #f5e9ee;
  --row-alt: #f8f0f4;
  --text: #4a3340;
  --muted: #8d6f7c;
  --border: #eedde4;
  --primary: #d992ac;
  --primary-soft: #f7e9ef;
  --secondary: #c982a0;
  --secondary-soft: #f5e9ee;
  --danger: #d64550;
  --success: #2f9e6e;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.07);
  --sidebar-width: 220px;
}

.theme-dark {
  --pink: #c96f9c;
  --blue: #6f9fd0;
  --bg: #191622;
  --surface: #241f2e;
  --surface-2: #2d2431;
  --row-alt: #2a2230;
  --text: #f1edf5;
  --muted: #a99fae;
  --border: #3a3345;
  --primary: #c96f9c;
  --primary-soft: #332535;
  --secondary: #7fa9d9;
  --secondary-soft: #2a2f3d;
  --danger: #e57380;
}

.theme-blue {
  --pink: #d992ac;
  --blue: #7fa9d9;
  --bg: #eef4fb;
  --surface: #f8fbff;
  --surface-2: #e5eef9;
  --row-alt: #f0f6fd;
  --text: #22344d;
  --muted: #6b7f9c;
  --border: #dbe7f5;
  --primary: #7fa9d9;
  --primary-soft: #e7f0fb;
  --secondary: #6f9fd0;
  --secondary-soft: #e5eef9;
}

* {
  box-sizing: border-box;
}

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

button {
  font-family: inherit;
}

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

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--sidebar-bg, linear-gradient(180deg, var(--primary-soft), var(--secondary-soft)));
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 12px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand {
  font-size: 17px;
  font-weight: 700;
  padding: 8px 10px 14px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  text-align: left;
  padding: 9px 12px;
  border: none;
  background: transparent;
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}

.nav-icon {
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}

.nav-item:hover {
  background: var(--secondary-soft);
}

.nav-item.active {
  background: var(--primary);
  color: #fff;
}

.sidebar-footer {
  font-size: 12px;
  color: var(--muted);
  padding: 8px 10px;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 24px;
  background: var(--topbar-bg, linear-gradient(90deg, var(--primary-soft), var(--secondary-soft)));
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
}

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

.current-class-picker {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--primary-soft);
  border: 1px solid var(--primary);
  border-radius: 10px;
}

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

.class-select {
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  min-width: 170px;
  cursor: pointer;
  outline: none;
  padding: 2px 0;
}

.class-select:disabled {
  opacity: 0.6;
}

.icon-btn {
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  font-size: 16px;
}

.sidebar-toggle {
  display: none;
}

.sidebar-mask {
  display: none;
}

.content {
  padding: 24px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.module {
  display: none;
}

.module.active {
  display: block;
}

.page-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.page-desc {
  margin: 0;
  color: var(--muted);
}

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

.seat-dim-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.seat-dim-field {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

.seat-dim-field input {
  width: 62px;
}

.btn {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
  line-height: 1.4;
}

.btn:hover {
  background: var(--surface-2);
}

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

.btn.primary:hover {
  opacity: 0.9;
}

.btn.danger {
  color: var(--danger);
  border-color: var(--danger);
  background: transparent;
}

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

.btn.small {
  padding: 5px 10px;
  font-size: 12px;
}

.input {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
}

select.input {
  min-width: 110px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.card {
  background: var(--card-bg, linear-gradient(135deg, var(--surface), var(--row-alt)));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 12px;
  font-size: 15px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.card-meta {
  color: var(--muted);
  font-size: 13px;
  margin: 3px 0;
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

/* 请假模块 */
.leave-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 14px;
}

.leave-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.leave-card.warn {
  border-color: var(--danger);
  box-shadow: 0 0 0 1px var(--danger), var(--shadow);
  background: color-mix(in srgb, var(--card-bg), var(--danger) 6%);
}

.leave-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.leave-card-title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 0;
}

.leave-student-name {
  font-size: 15px;
  font-weight: 700;
}

.leave-badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
  background: var(--primary-soft);
  border: 1px solid var(--primary);
  color: var(--secondary);
}

.leave-badge.warn {
  background: #fde8e8;
  border-color: var(--danger);
  color: var(--danger);
}

.leave-status {
  flex-shrink: 0;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.leave-status.confirmed {
  background: #e6f4ea;
  color: #2e7d32;
}

.leave-status.pending {
  background: #fef3e2;
  color: #b7791f;
}

.leave-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 14px;
}

.leave-card-row {
  font-size: 13px;
  min-width: 0;
  overflow-wrap: anywhere;
}

.leave-card-row.full {
  grid-column: 1 / -1;
}

.leave-card-label {
  display: inline-block;
  min-width: 34px;
  color: var(--muted);
  margin-right: 4px;
}

.leave-summary {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 16px;
}

.leave-summary-head {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 10px;
}

.leave-summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 8px;
}

.leave-summary-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  background: var(--row-alt);
}

.leave-summary-item.warn {
  border-color: var(--danger);
  background: color-mix(in srgb, var(--row-alt), var(--danger) 8%);
}

.leave-summary-name {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-weight: 600;
  font-size: 13px;
}

.leave-summary-meta {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.leave-student-info {
  background: var(--primary-soft);
  border: 1px dashed var(--primary);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.6;
}

.leave-student-info.warn {
  background: #fde8e8;
  border-color: var(--danger);
}

.leave-student-picker {
  position: relative;
}

.leave-student-suggestions {
  display: none;
  flex-direction: column;
  gap: 4px;
  margin-top: 6px;
  max-height: 210px;
  overflow: auto;
}

.suggestion-item {
  text-align: left;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
}

.suggestion-item:hover {
  background: var(--primary-soft);
}

.suggestion-empty {
  padding: 8px 10px;
  color: var(--muted);
  font-size: 13px;
}

.evidence-view img {
  display: block;
  max-width: 100%;
  max-height: 70vh;
  margin: 0 auto;
  border-radius: 8px;
}

.overview-value-warn {
  color: var(--danger);
}

.class-card.current {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.table-wrap {
  overflow: auto;
  max-height: calc(100vh - 240px);
  background: var(--table-bg, var(--surface));
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--table-bg, var(--surface));
}

.table th,
.table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}

.table th {
  background: var(--table-head-bg, color-mix(in srgb, var(--table-bg), #000 10%));
  color: var(--muted);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 2;
  box-shadow: 0 1px 0 var(--border);
}

.table tr:last-child td {
  border-bottom: none;
}

.table tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--table-bg), #000 5%);
}

.density-compact .table th,
.density-compact .table td {
  padding: 4px 6px;
}

.density-compact .btn {
  padding: 5px 10px;
  font-size: 13px;
}

.density-compact .input {
  padding: 5px 8px;
  font-size: 13px;
}

.density-compact .card {
  padding: 10px;
}

.density-compact .nav-item {
  padding: 6px 10px;
}

.density-compact .topbar {
  padding: 8px 16px;
}

.density-compact .content {
  padding: 16px;
}

.empty {
  padding: 48px 16px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.stats {
  display: block;
  margin-bottom: 12px;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.overview-item {
  padding: 20px 16px;
  text-align: center;
  background: var(--stat-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.overview-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 6px;
}

.overview-value {
  display: block;
  font-size: 30px;
  line-height: 1.15;
}

.stat-item {
  background: var(--stat-bg, var(--surface));
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
}

.stat-item strong {
  font-size: 16px;
}

.schedule-stats .stat-item {
  padding: 18px 24px;
}

.schedule-stats .stat-item strong {
  display: block;
  font-size: 28px;
  line-height: 1.2;
}

.tag-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag-chip {
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
}

.tag-chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.schedule-tag {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 9px;
  border-radius: 10px;
  background: var(--primary-soft);
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 12px;
  vertical-align: middle;
}

.schedule-group {
  margin-bottom: 18px;
}

.schedule-date-heading {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 10px;
}

.schedule-item {
  display: flex;
  gap: 14px;
  align-items: stretch;
  padding: 14px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
}

.schedule-item.done {
  opacity: 0.65;
  background: color-mix(in srgb, var(--card-bg), var(--muted) 14%);
  border-color: var(--muted);
}

.schedule-item.done .schedule-item-time {
  color: var(--muted);
}

.schedule-item.done .card-title {
  text-decoration: line-through;
}

.schedule-item-time {
  min-width: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.todo-date {
  min-width: 90px;
  font-size: 14px;
}

.student-no {
  min-width: 80px;
  font-size: 14px;
}

.work-study-hours {
  flex-direction: column;
  gap: 2px;
  line-height: 1.1;
}

.work-study-unit {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
}

.gender-icon {
  display: inline-block;
  margin-right: 5px;
  font-weight: 700;
}

.gender-icon.male {
  color: #3b82f6;
}

.gender-icon.female {
  color: #e879a8;
}

.priority-chip {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  vertical-align: middle;
}

.priority-chip.高 {
  background: #fde8e8;
  color: #c0392b;
}

.priority-chip.中 {
  background: #fef3e2;
  color: #b7791f;
}

.priority-chip.低 {
  background: #e6f4ea;
  color: #2e7d32;
}

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

.schedule-item-main .card-title {
  margin-bottom: 4px;
}

.schedule-actions {
  display: flex;
  flex-direction: row;
  gap: 4px;
  align-items: center;
}

.icon-btn.small {
  width: 30px;
  height: 30px;
  font-size: 14px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-grid .full {
  grid-column: 1 / -1;
}

.field-label {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 13px;
  color: var(--muted);
}

.field-label input,
.field-label select,
.field-label textarea {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
}

.field-label textarea {
  min-height: 80px;
  resize: vertical;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.timetable-week-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}

.timetable-toolbar {
  flex-wrap: nowrap;
  overflow-x: auto;
}

.timetable-toolbar .field-label {
  flex-direction: row;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.timetable-week-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--surface);
}

.timetable-week-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.timetable-table th:first-child,
.timetable-table td:first-child {
  min-width: 140px;
  white-space: nowrap;
}

.switch-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 0;
  font-size: 13px;
  color: var(--muted);
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: 24px;
  transition: background 0.2s;
  cursor: pointer;
}

.slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}

.switch input:checked + .slider {
  background: var(--primary);
}

.switch input:checked + .slider::before {
  transform: translateX(20px);
}

.timetable-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 4px;
  table-layout: fixed;
}

.timetable-table th,
.timetable-table td {
  border: none;
  border-radius: 10px;
  padding: 8px;
  text-align: center;
  font-size: 13px;
  vertical-align: top;
  background: var(--surface);
}

.timetable-table th {
  background: var(--table-head-bg, color-mix(in srgb, var(--table-bg), #000 8%));
  color: var(--muted);
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 2;
}

.timetable-table .week-group.active-week {
  background: var(--primary-soft);
  color: var(--primary);
}

.tt-cell {
  height: 58px;
  min-height: 58px;
  cursor: pointer;
  background: var(--surface);
  transition: background 0.15s;
}

.tt-cell:not(.tt-multi):hover {
  background: var(--primary-soft);
}

.tt-cell.override {
  background: #fff3cd;
}

.tt-cell.tt-multi {
  vertical-align: top;
  cursor: pointer;
}

.tt-cell.tt-multi:hover {
  background: var(--primary-soft);
}

.tt-period {
  font-weight: 600;
  line-height: 1.3;
}

.tt-period em {
  display: block;
  font-style: normal;
  font-size: 11px;
  font-weight: 400;
  color: var(--muted);
}

.tt-subject {
  font-weight: 600;
  line-height: 1.35;
}

.tt-entry {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 3px 0;
  border-bottom: 1px dashed var(--border);
  cursor: pointer;
  border-radius: 6px;
}

.tt-entry:hover {
  background: var(--primary-soft);
}

.tt-entry:last-child {
  border-bottom: none;
}

.tt-class {
  font-size: 11px;
  color: var(--muted);
}

.timetable-wide {
  display: block;
}

.timetable-narrow {
  display: none;
}

.tt-week-block {
  margin-bottom: 16px;
}

.tt-week-block:last-child {
  margin-bottom: 0;
}

.tt-week-block .tt-week-title {
  padding: 8px;
  text-align: center;
  font-weight: 600;
  color: var(--muted);
  background: var(--table-head-bg, color-mix(in srgb, var(--table-bg), #000 8%));
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 10px 10px 0 0;
}

.tt-week-block.active-week .tt-week-title {
  background: var(--primary-soft);
  color: var(--primary);
}

@media (max-width: 1100px) {
  .timetable-wide {
    display: none;
  }

  .timetable-narrow {
    display: block;
  }
}

.seat-grid {
  display: grid;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.seat-cell {
  min-height: 52px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: var(--surface-2);
  font-size: 13px;
  position: relative;
}

.seat-cell.filled {
  border-style: solid;
  background: var(--primary-soft);
}

.seat-cell.aisle {
  border: none;
  background: transparent;
  cursor: default;
}

.seat-main {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  line-height: 1.25;
  text-align: center;
}

.seat-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 3px;
  margin-top: 3px;
}

.seat-tag {
  display: inline-block;
  max-width: 64px;
  padding: 1px 6px;
  border-radius: 8px;
  background: var(--primary-soft);
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 10px;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.seat-aisle {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 2px;
  writing-mode: vertical-rl;
  user-select: none;
}

.seat-aisle-row {
  writing-mode: horizontal-tb;
}

.aisle-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-bottom: 10px;
  min-height: 26px;
}

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

.aisle-toggles {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
}

.aisle-toggle {
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
  line-height: 1.4;
  cursor: pointer;
}

.aisle-toggle:hover {
  border-color: var(--primary);
}

.aisle-toggle.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.option-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  background: var(--surface);
}

.option-item.selected {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.nav-order-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: grab;
  margin-bottom: 6px;
}

.nav-order-item.dragging {
  opacity: 0.5;
}

.drag-handle {
  color: var(--muted);
  user-select: none;
}

.color-input {
  width: 60px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
}

/* 界面设置：主题与颜色编辑 */
.settings-card-wide {
  grid-column: 1 / -1;
}

.settings-subhead {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}

.settings-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.glass-switch-row {
  margin: 10px 0 4px;
  padding: 10px 12px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.glass-switch-row .switch input:disabled + .slider {
  opacity: 0.5;
  cursor: not-allowed;
}

.theme-swatch {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.theme-swatch i {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1px solid var(--border);
  display: block;
}

.saved-themes-label {
  font-size: 12px;
  color: var(--muted);
  margin: 12px 0 6px;
}

.saved-theme {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.saved-theme.selected {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.saved-theme-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.saved-theme-name {
  font-weight: 600;
  color: var(--text);
}

.saved-theme-meta {
  font-size: 12px;
  color: var(--muted);
}

.saved-theme .btn {
  margin: 0;
}

.color-group {
  margin-top: 14px;
}

.color-group h4 {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.color-group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
}

.color-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.color-item-label {
  font-size: 13px;
  color: var(--text);
}

.color-item-control {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.color-item .color-input {
  width: 44px;
  height: 30px;
  padding: 2px;
}

.color-hex {
  width: 74px;
  padding: 5px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text);
  font-size: 12px;
  font-family: ui-monospace, Consolas, monospace;
}

.color-reset {
  width: 30px;
  height: 30px;
  font-size: 15px;
}

/* ===== 玻璃材质模式 ===== */
.theme-light {
  --glass-alpha: 0.68;
  --glass-blob-alpha: 0.22;
}

.theme-dark {
  --glass-alpha: 0.45;
  --glass-blob-alpha: 0.20;
}

.theme-blue {
  --glass-alpha: 0.66;
  --glass-blob-alpha: 0.20;
}

.theme-flat {
  --glass-alpha: 0.66;
  --glass-blob-alpha: 0.14;
}

#app.glass-mode {
  --glass-surface: color-mix(in srgb, var(--surface) var(--glass-alpha), transparent);
  --glass-surface-2: color-mix(in srgb, var(--surface-2) var(--glass-alpha), transparent);
  --glass-card: color-mix(in srgb, var(--card-bg, var(--surface)) var(--glass-alpha), transparent);
  --glass-bg: color-mix(in srgb, var(--bg) calc(var(--glass-alpha) * 0.55), transparent);
  --glass-table: color-mix(in srgb, var(--table-bg, var(--surface)) var(--glass-alpha), transparent);
  --glass-table-head: color-mix(in srgb, var(--table-head-bg, var(--surface-2)) var(--glass-alpha), transparent);
  --glass-stat: color-mix(in srgb, var(--stat-bg, var(--surface)) var(--glass-alpha), transparent);
}

/* 背景彩色光斑，让玻璃透出层次 */
#app.glass-mode .main::before,
#app.glass-mode .main::after {
  content: '';
  position: fixed;
  z-index: -1;
  border-radius: 50%;
  filter: blur(70px);
  pointer-events: none;
}

#app.glass-mode .main::before {
  width: 420px;
  height: 420px;
  left: -80px;
  top: 12%;
  background: color-mix(in srgb, var(--primary) var(--glass-blob-alpha), transparent);
}

#app.glass-mode .main::after {
  width: 480px;
  height: 480px;
  right: -120px;
  bottom: 6%;
  background: color-mix(in srgb, var(--secondary) var(--glass-blob-alpha), transparent);
}

/* 玻璃表面：卡片 / 面板 / 表格 / 统计卡 / 输入框 */
#app.glass-mode .card,
#app.glass-mode .info-box,
#app.glass-mode .timetable-week-card,
#app.glass-mode .dashboard-card,
#app.glass-mode .class-card,
#app.glass-mode .leave-card,
#app.glass-mode .score-card,
#app.glass-mode .compare-student-card,
#app.glass-mode .class-compare-card,
#app.glass-mode .greeting-card {
  background: var(--glass-card);
  backdrop-filter: blur(18px) saturate(1.35);
  -webkit-backdrop-filter: blur(18px) saturate(1.35);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

#app.glass-mode .table-wrap,
#app.glass-mode .table,
#app.glass-mode .table tbody tr:nth-child(even) {
  background: var(--glass-table);
  backdrop-filter: blur(14px) saturate(1.25);
  -webkit-backdrop-filter: blur(14px) saturate(1.25);
}

#app.glass-mode .table th {
  background: var(--glass-table-head);
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
}

#app.glass-mode .timetable-table th {
  background: var(--glass-table-head);
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
}

#app.glass-mode .overview-item,
#app.glass-mode .stat-item {
  background: var(--glass-stat);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
}

#app.glass-mode .input,
#app.glass-mode .field-label input,
#app.glass-mode .field-label select,
#app.glass-mode .field-label textarea,
#app.glass-mode select,
#app.glass-mode textarea {
  background: var(--glass-surface);
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
}

#app.glass-mode .option-item,
#app.glass-mode .nav-order-item,
#app.glass-mode .tag-chip,
#app.glass-mode .chip {
  background: var(--glass-surface);
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
}

/* 玻璃导航 */
#app.glass-mode .sidebar {
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border-right: 1px solid color-mix(in srgb, var(--border), transparent 25%);
}

#app.glass-mode .topbar {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid color-mix(in srgb, var(--border), transparent 25%);
}

#app.glass-mode .nav-item:hover,
#app.glass-mode .nav-item.active {
  background: color-mix(in srgb, var(--primary-soft) calc(var(--glass-alpha) * 1.15), transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* 弹窗玻璃 */
#app.glass-mode .modal {
  background: var(--glass-card);
  backdrop-filter: blur(26px) saturate(1.4);
  -webkit-backdrop-filter: blur(26px) saturate(1.4);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

#app.glass-mode .modal-mask {
  background: rgba(0, 0, 0, 0.28);
}

/* ===== 扁平插画主题装饰 ===== */
#app.theme-flat .content {
  background-image: radial-gradient(color-mix(in srgb, var(--primary) 16%, transparent) 1.2px, transparent 1.2px);
  background-size: 22px 22px;
}

.theme-flat .sidebar {
  background: color-mix(in srgb, var(--navBg) 88%, transparent);
}

.theme-flat .topbar {
  background: color-mix(in srgb, var(--topBg) 88%, transparent);
  border-bottom-style: dashed;
}

.theme-flat .card,
.theme-flat .info-box,
.theme-flat .dashboard-card,
.theme-flat .leave-card,
.theme-flat .score-card,
.theme-flat .compare-student-card,
.theme-flat .timetable-week-card {
  border-radius: 6px;
  box-shadow: 4px 4px 0 color-mix(in srgb, var(--border), transparent 20%);
}

.theme-flat .btn,
.theme-flat .input,
.theme-flat .color-input,
.theme-flat .stat-item,
.theme-flat .overview-item {
  border-radius: 6px;
}

.theme-flat .main::before {
  content: '';
  position: fixed;
  width: 110px;
  height: 110px;
  left: auto;
  right: 34px;
  top: 86px;
  border-radius: 28px;
  transform: rotate(12deg);
  background: color-mix(in srgb, var(--secondary) 16%, transparent);
  pointer-events: none;
  z-index: 0;
}

.theme-flat .main::after {
  content: '';
  position: fixed;
  width: 80px;
  height: 80px;
  right: auto;
  left: 34px;
  bottom: 40px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--pink) 15%, transparent);
  pointer-events: none;
  z-index: 0;
}

#app.glass-mode.theme-flat .main::before,
#app.glass-mode.theme-flat .main::after {
  filter: blur(0);
}

/* 固定配色主题的颜色编辑锁定提示 */
.color-locked-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: var(--surface);
  margin-bottom: 14px;
}

.color-locked-icon {
  font-size: 20px;
  line-height: 1.2;
}

.color-preview-grid {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.color-item-disabled {
  opacity: 0.75;
}

.color-item-disabled .color-input,
.color-item-disabled .color-hex {
  cursor: not-allowed;
}

.saved-theme-badge {
  display: inline-block;
  font-size: 11px;
  color: var(--secondary);
  background: var(--secondary-soft);
  border-radius: 10px;
  padding: 1px 8px;
  margin-top: 2px;
  align-self: flex-start;
}

.saved-theme-badge.locked {
  color: var(--muted);
  background: var(--surface-2);
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 14px;
  align-items: start;
  margin-top: 14px;
}

.dashboard-addbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
  padding: 12px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

.dashboard-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 14px;
  align-items: start;
}

.dashboard-layout {
  display: grid;
  gap: 22px;
}

.dashboard-row-main {
  display: grid;
  gap: 20px;
}

.dashboard-row-main .dashboard-card {
  height: 100%;
}

.dashboard-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.dashboard-stats-grid .stat-item {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--stat-bg);
  box-shadow: var(--shadow);
}

.stat-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border-radius: 12px;
  background: var(--primary-soft);
}

.stat-info {
  min-width: 0;
}

.stat-label {
  display: block;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 4px;
}

.dashboard-stats-grid .stat-item strong {
  display: block;
  font-size: 28px;
  line-height: 1.1;
}

.dashboard-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
  box-shadow: var(--shadow);
}

.greeting-card {
  background: linear-gradient(135deg, var(--primary-soft), var(--secondary-soft));
  border: none;
}

.greeting-content h2 {
  margin: 0;
  font-size: 24px;
}

.greeting-content p {
  margin: 8px 0 0;
}

.dashboard-card.editing {
  border-style: dashed;
}

.dashboard-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.dashboard-card-head h3 {
  margin: 0;
  font-size: 15px;
  flex: 1;
}

.card-count {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 9px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
}

.card-head-actions {
  display: flex;
  gap: 6px;
}

.quick-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.quick-grid .btn {
  width: 100%;
}

.seat-unassigned-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(76px, 1fr));
  gap: 8px;
  align-content: start;
  max-height: min(50vh, 480px);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 4px;
}

.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.modal {
    background: var(--surface);
    border-radius: 12px;
    width: min(680px, 100%);
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 15px;
}

.modal-close {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 22px;
  cursor: pointer;
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    min-height: 0;
  }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

#toastBox {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.toast {
  background: #2b2430;
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.18);
}

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--danger);
}

#reminderBox {
  position: fixed;
  top: 64px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: min(92vw, 520px);
  pointer-events: none;
}

.reminder {
  position: relative;
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 44px 14px 16px;
  border-radius: 12px;
  background: #2b2430;
  border: 2px solid var(--primary);
  color: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
  animation: reminder-pop 0.3s ease;
  cursor: pointer;
}

.reminder-icon {
  font-size: 26px;
  line-height: 1;
  animation: bell-ring 1.2s ease 2;
}

.reminder-text {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.reminder-close {
  position: absolute;
  top: 8px;
  right: 10px;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reminder-close:hover {
  background: rgba(255, 255, 255, 0.25);
}

.reminder-warning {
  border-color: var(--danger);
  background: #35232b;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 0 0 18px rgba(214, 69, 80, 0.25);
}

.reminder .btn.small {
  padding: 4px 10px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.reminder .btn.small:hover {
  background: rgba(255, 255, 255, 0.28);
}

.schedule-item.overdue {
  border-color: var(--danger);
  background: color-mix(in srgb, var(--card-bg), var(--danger) 7%);
}

.schedule-item.overdue .schedule-item-time {
  color: var(--danger);
}

.overdue-chip {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  font-size: 11px;
  line-height: 1.6;
  border-radius: 999px;
  background: var(--danger);
  color: #fff;
  vertical-align: middle;
  white-space: nowrap;
}

@keyframes reminder-pop {
  from { opacity: 0; transform: translateY(-14px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes bell-ring {
  0%, 100% { transform: rotate(0); }
  15% { transform: rotate(18deg); }
  30% { transform: rotate(-14deg); }
  45% { transform: rotate(10deg); }
  60% { transform: rotate(-8deg); }
  75% { transform: rotate(4deg); }
}

.info-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  line-height: 1.8;
}

.layout-top {
  flex-direction: column;
}

.layout-top .sidebar {
  width: 100%;
  height: auto;
  flex-direction: row;
  align-items: center;
  border-right: none;
  border-bottom: 1px solid var(--border);
  position: static;
  padding: 10px 16px;
}

.layout-top .nav {
  flex-direction: row;
  flex-wrap: wrap;
  flex: 1;
}

.layout-top .nav-item {
  width: auto;
}

.layout-top .brand {
  padding: 0 12px 0 0;
}

.layout-top .sidebar-footer {
  margin-left: auto;
}

@media (max-width: 768px) {
  .sidebar-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .sidebar-mask {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 55;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }

  #app.sidebar-open .sidebar-mask {
    opacity: 1;
    pointer-events: auto;
  }

  body.sidebar-open .sidebar-mask {
    opacity: 1;
    pointer-events: auto;
  }

  .content {
    padding: 12px;
  }

  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    height: 100vh;
    z-index: 60;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }

  #app.sidebar-open .sidebar {
    transform: translateX(0);
  }

  .nav-item {
    white-space: nowrap;
    padding: 8px 10px;
  }

  .topbar {
    padding: 10px 12px;
  }

  .current-class-picker {
    padding: 4px 8px;
  }

  .picker-label {
    display: none;
  }

  .class-select {
    min-width: 120px;
    font-size: 14px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .leave-card-body {
    grid-template-columns: 1fr;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .dashboard-cards {
    grid-template-columns: 1fr;
  }

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

  .dashboard-row-main {
    grid-template-columns: 1fr !important;
  }

  .timetable-week-grid {
    grid-template-columns: 1fr;
  }
}

@media print {
  .sidebar,
  .topbar,
  .toolbar,
  .page-head {
    display: none !important;
  }

  .content {
    max-width: none;
    padding: 0;
  }

  .module {
    display: none !important;
  }

  .module.active {
    display: block !important;
  }
}

/* 成绩模块 - 学生卡片 */
.score-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 14px;
}

.score-card {
  background: var(--card-bg, linear-gradient(135deg, var(--surface), var(--row-alt)));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.score-card.is-pass {
  border-color: color-mix(in srgb, var(--success), transparent 45%);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--success), transparent 45%), var(--shadow);
}

.score-card.is-fail {
  border-color: color-mix(in srgb, var(--danger), transparent 40%);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--danger), transparent 40%), var(--shadow);
}

.score-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.score-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-soft, var(--surface-2));
  color: var(--primary);
  font-weight: 700;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.score-card-info {
  min-width: 0;
  flex: 1;
}

.score-card-name {
  font-weight: 600;
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.score-card-no {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.score-status {
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--muted);
  flex: 0 0 auto;
}

.is-pass .score-status {
  background: color-mix(in srgb, var(--success), transparent 82%);
  color: var(--success);
}

.is-fail .score-status {
  background: color-mix(in srgb, var(--danger), transparent 82%);
  color: var(--danger);
}

.score-card-field {
  display: flex;
  align-items: center;
  gap: 8px;
}

.score-card-label {
  font-size: 13px;
  color: var(--muted);
  flex: 0 0 auto;
}

.score-input {
  flex: 1;
  min-width: 0;
}

.density-compact .score-card {
  padding: 10px;
}

.density-compact .score-avatar {
  width: 32px;
  height: 32px;
  font-size: 14px;
}

/* 成绩模块 - 分布图 */
.dist-chart {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

.dist-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.dist-title {
  font-weight: 600;
  font-size: 15px;
}

.dist-sub {
  font-size: 12px;
  color: var(--muted);
}

.dist-row {
  display: grid;
  grid-template-columns: 56px 1fr 58px;
  align-items: center;
  gap: 10px;
  margin-bottom: 9px;
}

.dist-label {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
}

.dist-track {
  height: 18px;
  background: var(--row-alt, var(--surface-2));
  border-radius: 9px;
  overflow: hidden;
}

.dist-bar {
  height: 100%;
  border-radius: 9px;
  min-width: 2px;
  transition: width 0.4s ease;
}

.dist-bar.dist-fail { background: var(--danger); }
.dist-bar.dist-warn { background: #e8930c; }
.dist-bar.dist-mid { background: #d9a520; }
.dist-bar.dist-good { background: var(--blue); }
.dist-bar.dist-excellent { background: var(--success); }
.dist-bar.dist-top { background: #7c5cff; }

.dist-count {
  font-size: 13px;
  text-align: right;
  white-space: nowrap;
}

.dist-count em {
  font-style: normal;
  font-size: 11px;
  color: var(--muted);
  margin-left: 2px;
}

/* 成绩模块 - 考试科目编辑 */
.subject-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 30px;
}

.subject-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px 4px 12px;
  border-radius: 14px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  border: 1px solid color-mix(in srgb, var(--primary), transparent 65%);
}

.chip-remove {
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 15px;
  line-height: 1;
  padding: 2px 4px;
  border-radius: 50%;
}

.chip-remove:hover {
  background: color-mix(in srgb, var(--danger), transparent 80%);
  color: var(--danger);
}

.subject-input-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.subject-input-row .input {
  flex: 1;
}

.link {
  color: var(--primary);
  text-decoration: underline;
  cursor: pointer;
}

/* 成绩模块 - 学生卡片操作 */
.score-card-actions {
  display: flex;
  justify-content: flex-end;
}

/* 成绩模块 - 多次考试对比（纵向卡片） */
.compare-student-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.compare-student-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.compare-student-head {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.compare-student-info {
  flex: 1;
  min-width: 0;
}

.compare-student-name {
  font-weight: 600;
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.compare-student-no {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.compare-diff-badge {
  font-size: 14px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--muted);
  flex: 0 0 auto;
}

.compare-diff-badge.up {
  background: color-mix(in srgb, var(--success), transparent 82%);
  color: var(--success);
}

.compare-diff-badge.down {
  background: color-mix(in srgb, var(--danger), transparent 82%);
  color: var(--danger);
}

.compare-diff-badge.flat {
  background: color-mix(in srgb, var(--blue), transparent 82%);
  color: var(--blue);
}

.compare-scores {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.compare-score {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px;
  background: var(--row-alt);
  border-radius: 8px;
}

.compare-score-label {
  font-size: 12px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.compare-score strong {
  font-size: 20px;
  line-height: 1.1;
}

.compare-score strong.ok {
  color: var(--success);
}

.compare-score strong.bad {
  color: var(--danger);
}

/* 成绩模块 - 学生成绩详情 */
.detail-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.detail-name {
  font-size: 17px;
  font-weight: 700;
}

.detail-no {
  font-size: 13px;
  color: var(--muted);
  margin-top: 2px;
}

.detail-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.detail-exam {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 12px 14px;
}

.detail-exam-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.detail-exam-name {
  font-weight: 600;
  font-size: 14px;
}

.detail-exam-date {
  font-size: 12px;
  color: var(--muted);
}

.detail-subjects {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.detail-subject {
  display: grid;
  grid-template-columns: 64px 1fr 42px;
  align-items: center;
  gap: 10px;
}

.detail-subject-name {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-subject-track {
  height: 14px;
  background: var(--row-alt, var(--surface-2));
  border-radius: 7px;
  overflow: hidden;
}

.detail-subject-score {
  font-size: 15px;
  text-align: right;
}

.detail-subject.pass .detail-subject-score {
  color: var(--success);
}

.detail-subject.fail .detail-subject-score {
  color: var(--danger);
}

/* 成绩模块 - 班级对比 */
.class-compare-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.class-compare-row {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  background: var(--surface);
}

.class-compare-row .class-compare-name {
  flex: 1;
  min-width: 0;
  font-size: 14px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.class-compare-row select {
  max-width: 220px;
}

.class-compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.class-compare-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 12px 14px;
}

.class-compare-card-head {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 10px;
}

.class-compare-card .class-compare-name {
  font-weight: 600;
  font-size: 15px;
}

.class-compare-exam {
  font-size: 12px;
  color: var(--muted);
}

.class-compare-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 10px;
}

.class-compare-stats > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 12px;
  color: var(--muted);
}

.class-compare-stats strong {
  font-size: 18px;
  color: var(--text);
}

.tt-import-tip {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
}

.tt-import-preview {
  max-height: 260px;
  overflow: auto;
  margin-top: 4px;
}

.tt-import-summary {
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 8px;
}

.tt-import-errors {
  font-size: 12px;
  color: var(--danger, #d33);
  margin-top: 8px;
  line-height: 1.7;
}

.tt-import-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.tt-import-table th,
.tt-import-table td {
  border: 1px solid var(--border);
  padding: 4px 6px;
  text-align: center;
  background: var(--surface);
}
.tt-import-table em {
  display: block;
  font-style: normal;
  font-size: 11px;
  color: var(--muted);
}

.period-setting-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 13px;
}

.period-setting-row:last-child {
  border-bottom: none;
}

.period-setting-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
}

.period-editor {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.period-editor-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.period-editor-row .period-name {
  width: 110px;
}

.period-editor-row .period-start,
.period-editor-row .period-end {
  width: 110px;
}

/* ===== PWA / 在线更新 ===== */
#updateBanner {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: max(12px, env(safe-area-inset-bottom));
  z-index: 300;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--primary, #d992ac);
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  font-size: 13px;
}

.update-banner-icon {
  flex-shrink: 0;
  font-size: 16px;
}

.update-banner-text {
  flex: 1;
  min-width: 0;
}

.update-banner-btn {
  flex-shrink: 0;
  background: #fff;
  color: var(--primary, #d992ac);
  border: none;
  font-weight: 600;
}

.update-banner-btn:hover {
  opacity: 0.9;
  background: #fff;
}

.update-banner-close {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
}

.update-banner-close:hover {
  background: rgba(255, 255, 255, 0.35);
}

/* iPhone 刘海 / 底部横条安全区（PWA 独立窗口） */
@supports (padding: max(0px)) {
  .sidebar {
    padding-top: max(16px, env(safe-area-inset-top));
  }

  .topbar {
    padding-top: max(12px, env(safe-area-inset-top));
  }

  .content {
    padding-bottom: calc(24px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 768px) {
  #updateBanner {
    left: 8px;
    right: 8px;
    bottom: max(8px, env(safe-area-inset-bottom));
    font-size: 12px;
  }

  .topbar .icon-btn,
  .sidebar-toggle {
    width: 42px;
    height: 42px;
  }

  .modal {
    max-width: calc(100vw - 24px);
  }

  .table-wrap {
    max-height: none;
  }
}