/* Admin workspace --------------------------------------------------------- */
.admin-shell .site-header-inner {
  max-width: none;
}

.admin-app-body {
  min-width: 0;
  background:
    radial-gradient(circle at 7% 0%, var(--accent-glow), transparent 24rem),
    var(--bg);
}

.admin-main {
  min-width: 0;
}

.admin-subnav {
  position: sticky;
  top: var(--header-h);
  z-index: 40;
  display: flex;
  gap: 0.25rem;
  min-height: 3rem;
  padding: 0.45rem clamp(1rem, 3vw, 2.5rem);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--header-bg) 94%, transparent);
  backdrop-filter: blur(12px);
}

.admin-subnav a {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.85rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
}

.admin-subnav a:hover,
.admin-subnav a.active {
  color: var(--accent);
  text-decoration: none;
  background: var(--accent-glow);
  border-color: color-mix(in srgb, var(--accent) 24%, transparent);
}

.admin-workspace {
  width: min(100%, 100rem);
  min-width: 0;
  margin: 0 auto;
  padding: clamp(1.25rem, 3vw, 2.5rem);
}

.admin-page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.admin-page-header h1 {
  margin: 0.2rem 0 0.45rem;
  color: var(--text);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.admin-page-header p:not(.admin-eyebrow) {
  max-width: 48rem;
  margin: 0;
  color: var(--text-muted);
}

.admin-eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.admin-updated {
  flex-shrink: 0;
  padding: 0.35rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  background: var(--bg-card);
  font-size: 0.72rem;
}

/* Controls --------------------------------------------------------------- */
.admin-toolbar,
.admin-local-filters {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.admin-field {
  display: grid;
  gap: 0.35rem;
  min-width: 9rem;
}

.admin-field > span,
.join-code-form > label {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.025em;
}

.admin-search-field {
  flex: 1 1 17rem;
}

.admin-field input,
.admin-field select,
.admin-inline-search input,
.admin-inline-edit input,
.join-code-input {
  width: 100%;
  min-height: 2.5rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  outline: none;
  color: var(--text);
  background: var(--bg-elevated);
  font: inherit;
  font-size: 0.85rem;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.admin-field input:focus,
.admin-field select:focus,
.admin-inline-search input:focus,
.admin-inline-edit input:focus,
.join-code-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.admin-field input:disabled,
.admin-field select:disabled,
.admin-inline-search input:disabled,
.admin-inline-edit input:disabled,
.join-code-input:disabled,
.admin-workspace button:disabled,
.join-page button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.admin-local-filters {
  margin: 0;
  border-width: 1px 0 0;
  border-radius: 0;
  box-shadow: none;
  background: color-mix(in srgb, var(--bg-sidebar) 65%, var(--bg-card));
}

.admin-local-filters .admin-search-field {
  max-width: 28rem;
}

/* Feedback --------------------------------------------------------------- */
.admin-alert {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text);
  background: var(--bg-card);
  font-size: 0.86rem;
}

.admin-alert .btn {
  margin-left: auto;
}

.admin-alert-error {
  border-color: color-mix(in srgb, var(--danger) 40%, var(--border));
  background: color-mix(in srgb, var(--danger) 8%, var(--bg-card));
}

.admin-alert-error strong,
.admin-inline-error {
  color: var(--danger);
}

.admin-alert-success {
  border-color: color-mix(in srgb, var(--success) 38%, var(--border));
  background: color-mix(in srgb, var(--success) 8%, var(--bg-card));
}

.admin-alert-warning {
  border-color: color-mix(in srgb, var(--warning) 38%, var(--border));
  background: color-mix(in srgb, var(--warning) 8%, var(--bg-card));
}

.admin-inline-success {
  color: var(--success);
}

.admin-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 12rem;
  color: var(--text-muted);
}

.admin-spinner {
  width: 1.2rem;
  height: 1.2rem;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: admin-spin 700ms linear infinite;
}

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

/* KPI and signal cards --------------------------------------------------- */
.admin-kpi-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.85rem;
  margin: 1rem 0;
}

.admin-kpi-card,
.admin-panel,
.admin-table-section,
.admin-profile-strip {
  border: 1px solid var(--border);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.admin-kpi-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 8.75rem;
  padding: 1rem;
  border-radius: var(--radius-md);
}

.admin-kpi-card::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  content: "";
  background: var(--accent);
}

.admin-kpi-success::before { background: var(--success); }
.admin-kpi-warning::before { background: var(--warning); }

.admin-kpi-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.admin-kpi-card > strong {
  margin: 0.65rem 0 0.2rem;
  color: var(--text);
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.admin-kpi-card small {
  margin-top: auto;
  color: var(--text-muted);
  font-size: 0.7rem;
}

.admin-kpi-status-text {
  font-size: 1.1rem !important;
  line-height: 1.2 !important;
}

.admin-kpi-progress {
  display: grid;
  gap: 0.35rem;
  margin-top: auto;
}

.admin-kpi-progress progress {
  width: 100%;
}

.admin-signal-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 0.85fr) minmax(20rem, 1.3fr);
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.admin-panel {
  min-width: 0;
  padding: 1rem;
  border-radius: var(--radius-lg);
}

.admin-panel-heading,
.admin-table-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.admin-panel-heading h2,
.admin-table-heading h2,
.admin-access-card h3 {
  margin: 0.18rem 0 0;
  color: var(--text);
  font-size: 1rem;
}

.admin-count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.8rem;
  height: 1.8rem;
  padding: 0 0.4rem;
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-glow);
  font-size: 0.75rem;
  font-weight: 800;
}

.admin-count-warning {
  color: var(--warning);
  background: color-mix(in srgb, var(--warning) 12%, transparent);
}

.admin-person-list,
.admin-content-list {
  display: grid;
  gap: 0;
  margin: 0.75rem 0 0;
  padding: 0;
  list-style: none;
}

.admin-person-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--border);
}

.admin-person-list a,
.admin-content-list a,
.admin-student-cell a,
.admin-data-table td > a {
  color: var(--text);
  font-size: 0.83rem;
  font-weight: 700;
}

.admin-person-list a:hover,
.admin-content-list a:hover,
.admin-student-cell a:hover,
.admin-data-table td > a:hover {
  color: var(--accent);
}

.admin-person-list small,
.admin-content-list small,
.admin-student-cell small {
  display: block;
  margin-top: 0.1rem;
  color: var(--text-muted);
  font-size: 0.68rem;
}

.admin-content-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-top: 1px solid var(--border);
}

.admin-content-list li > span:first-child {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
}

.admin-content-list a {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-content-metrics {
  flex-shrink: 0;
  text-align: right;
}

.admin-content-metrics strong {
  display: block;
  color: var(--text);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.admin-type-label,
.admin-chip,
.admin-private-label {
  display: inline-flex;
  align-items: center;
  width: max-content;
  padding: 0.2rem 0.42rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  background: var(--bg-sidebar);
  font-size: 0.62rem;
  font-weight: 700;
  white-space: nowrap;
}

.admin-empty-compact {
  margin: 1rem 0 0;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.admin-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  flex: 0 0 2rem;
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  border-radius: 0.55rem;
  color: var(--accent);
  background: var(--accent-glow);
  font-size: 0.73rem;
  font-weight: 800;
}

.admin-avatar-warning {
  color: var(--warning);
  border-color: color-mix(in srgb, var(--warning) 30%, var(--border));
  background: color-mix(in srgb, var(--warning) 10%, var(--bg-card));
}

.admin-avatar-large {
  width: 4rem;
  height: 4rem;
  flex-basis: 4rem;
  border-radius: var(--radius-md);
  font-size: 1.35rem;
}

/* Data grid -------------------------------------------------------------- */
.admin-table-section {
  min-width: 0;
  margin-top: 1rem;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.admin-table-heading {
  min-height: 4.25rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
}

.admin-table-heading > span {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.admin-table-scroll {
  width: 100%;
  overflow: auto;
  outline: none;
  scrollbar-color: var(--border-strong) transparent;
}

.admin-table-scroll:focus-visible {
  box-shadow: inset 0 0 0 2px var(--accent);
}

.admin-data-table {
  width: 100%;
  min-width: 70rem;
  border-spacing: 0;
  border-collapse: separate;
  color: var(--text);
  font-size: 0.78rem;
}

.admin-data-table th {
  position: sticky;
  top: 0;
  z-index: 2;
  height: 2.5rem;
  padding: 0.5rem 0.65rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border-strong);
  color: var(--text-muted);
  background: var(--bg-sidebar);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.025em;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}

.admin-data-table td {
  min-height: 3.35rem;
  padding: 0.6rem 0.65rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  background: var(--bg-card);
}

.admin-data-table th:last-child,
.admin-data-table td:last-child {
  border-right: 0;
}

.admin-data-table tbody tr:last-child td {
  border-bottom: 0;
}

.admin-data-table tbody tr:hover td {
  background: color-mix(in srgb, var(--bg-hover) 65%, var(--bg-card));
}

.admin-data-table .admin-row-attention td {
  background: color-mix(in srgb, var(--warning) 4%, var(--bg-card));
}

.admin-data-table .admin-row-attention:hover td {
  background: color-mix(in srgb, var(--warning) 8%, var(--bg-card));
}

.admin-sort-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  cursor: pointer;
}

.admin-sort-button:hover,
th[aria-sort="ascending"] .admin-sort-button,
th[aria-sort="descending"] .admin-sort-button {
  color: var(--accent);
}

.admin-sort-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.admin-student-cell {
  display: grid;
  grid-template-columns: auto minmax(8rem, 1fr);
  align-items: center;
  gap: 0.6rem;
}

.admin-inline-edit {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  min-width: 13rem;
}

.admin-inline-edit input {
  min-height: 2rem;
  padding: 0.35rem 0.5rem;
}

.admin-nickname-cell > small {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.65rem;
}

.admin-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  max-width: 14rem;
}

.admin-muted,
.admin-status-detail {
  color: var(--text-muted);
  font-size: 0.68rem;
}

.admin-status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text);
  font-size: 0.7rem;
  font-weight: 700;
  white-space: nowrap;
}

.admin-status > span {
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: currentColor;
}

.admin-status-success { color: var(--success); }
.admin-status-warning { color: var(--warning); }

.admin-status-detail {
  display: block;
  margin: 0.2rem 0 0 0.85rem;
  white-space: nowrap;
}

.admin-number-cell {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.admin-progress-cell {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 8rem;
}

.admin-progress-cell progress,
.admin-kpi-progress progress {
  height: 0.42rem;
  border: 0;
  border-radius: 99px;
  overflow: hidden;
  background: var(--bg-hover);
  accent-color: var(--accent);
}

.admin-progress-cell progress {
  width: 5.5rem;
}

.admin-progress-cell progress::-webkit-progress-bar,
.admin-kpi-progress progress::-webkit-progress-bar {
  background: var(--bg-hover);
}

.admin-progress-cell progress::-webkit-progress-value,
.admin-kpi-progress progress::-webkit-progress-value {
  border-radius: 99px;
  background: var(--accent);
}

.admin-progress-cell span {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.admin-actions-cell {
  text-align: right;
  white-space: nowrap;
}

.admin-empty-state {
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  min-height: 14rem;
  padding: 2rem;
  color: var(--text-muted);
  text-align: center;
}

.admin-empty-state > span {
  font-size: 1.8rem;
}

.admin-empty-state h1,
.admin-empty-state h2,
.admin-empty-state h3 {
  margin: 0.55rem 0 0.35rem;
  color: var(--text);
}

.admin-empty-state p {
  max-width: 32rem;
  margin: 0 0 1rem;
  font-size: 0.84rem;
}

.admin-empty-state-small {
  min-height: 8rem;
  padding: 1.25rem;
}

/* Student detail --------------------------------------------------------- */
.admin-back-link {
  display: inline-flex;
  margin-bottom: 1.1rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.admin-back-link:hover {
  color: var(--accent);
}

.admin-student-header {
  align-items: center;
}

.admin-student-identity {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.admin-private-label {
  margin-left: 0.35rem;
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 25%, var(--border));
  background: var(--accent-glow);
  vertical-align: middle;
}

.admin-period-field {
  min-width: 12rem;
}

.admin-profile-strip {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
}

.admin-profile-strip dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
}

.admin-profile-strip dl > div {
  min-width: 0;
}

.admin-profile-strip dt {
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
}

.admin-profile-strip dd {
  overflow: hidden;
  margin: 0.25rem 0 0;
  color: var(--text);
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.admin-detail-kpis {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.admin-content-table {
  min-width: 65rem;
}

/* Groups ---------------------------------------------------------------- */
.admin-groups-layout {
  display: grid;
  grid-template-columns: minmax(16rem, 20rem) minmax(0, 1fr);
  align-items: start;
  gap: 1rem;
}

.admin-groups-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 4rem);
  max-height: calc(100vh - var(--header-h) - 5.5rem);
  overflow: auto;
}

.admin-create-group {
  display: grid;
  gap: 0.6rem;
  margin: 1rem 0;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.admin-group-list {
  display: grid;
  gap: 0.35rem;
}

.admin-group-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  padding: 0.65rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text);
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.admin-group-option:hover,
.admin-group-option.active {
  border-color: var(--border);
  background: var(--bg-hover);
}

.admin-group-option.active {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
  box-shadow: inset 3px 0 var(--accent);
}

.admin-group-option strong,
.admin-group-option small {
  display: block;
}

.admin-group-option strong {
  font-size: 0.8rem;
}

.admin-group-option small {
  margin-top: 0.15rem;
  color: var(--text-muted);
  font-size: 0.64rem;
}

.admin-group-option-meta {
  flex-shrink: 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-align: right;
}

.admin-groups-content {
  min-width: 0;
}

.admin-group-overview {
  margin-bottom: 1rem;
}

.admin-group-title-row {
  align-items: flex-start;
}

.admin-group-title-row h2 {
  font-size: 1.35rem;
}

.admin-group-title-row p:not(.admin-eyebrow) {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.admin-danger-button {
  color: var(--danger);
}

.admin-danger-button:hover {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border));
  background: color-mix(in srgb, var(--danger) 8%, transparent);
}

.admin-access-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.admin-access-card {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 0.9rem;
}

.admin-access-card h3 {
  font-size: 1.05rem;
}

.admin-access-card p:not(.admin-eyebrow) {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.admin-generated-access {
  display: grid;
  gap: 0.35rem;
  width: 100%;
  padding: 0.75rem;
  border: 1px solid color-mix(in srgb, var(--success) 30%, var(--border));
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--success) 7%, var(--bg-card));
}

.admin-generated-access > span,
.admin-generated-access > small {
  color: var(--text-muted);
  font-size: 0.65rem;
}

.admin-generated-access > code {
  color: var(--text);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.admin-generated-link a,
.admin-raw-token {
  overflow-wrap: anywhere;
}

.admin-generated-link > code.admin-raw-token {
  color: var(--text-muted);
  font-size: 0.63rem;
  font-weight: 500;
  letter-spacing: 0;
}

.admin-member-table,
.admin-available-table {
  min-width: 50rem;
}

.admin-available-heading {
  align-items: flex-end;
}

.admin-inline-search {
  display: flex;
  gap: 0.45rem;
  width: min(100%, 28rem);
}

.admin-inline-search input {
  min-width: 0;
}

/* Join ------------------------------------------------------------------ */
.join-page {
  width: min(100% - 2rem, 34rem);
  margin: 0 auto;
  padding: clamp(2.5rem, 8vw, 6rem) 0;
}

.join-card {
  padding: clamp(1.5rem, 5vw, 2.5rem);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.join-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  margin-bottom: 1rem;
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  border-radius: var(--radius-lg);
  background: var(--accent-glow);
  font-size: 1.45rem;
}

.join-card h1 {
  margin: 0.3rem 0 0.65rem;
  color: var(--text);
  font-size: clamp(1.55rem, 5vw, 2.15rem);
  letter-spacing: -0.03em;
}

.join-card > p:not(.admin-eyebrow),
.join-code-form + p {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.join-card > .btn + .btn {
  margin-left: 0.4rem;
}

.join-code-form {
  display: grid;
  gap: 0.65rem;
  margin-top: 1.5rem;
  text-align: left;
}

.join-code-form > small {
  color: var(--text-muted);
  font-size: 0.7rem;
}

.join-code-input {
  min-height: 3.5rem;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-align: center;
  text-transform: uppercase;
}

.join-code-form .admin-alert {
  margin: 0;
}

.join-privacy-note {
  padding: 1rem;
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  background: color-mix(in srgb, var(--bg-card) 72%, transparent);
  font-size: 0.75rem;
}

.join-privacy-note strong {
  color: var(--text);
}

.join-privacy-note p {
  margin: 0.25rem 0 0;
}

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

/* Responsive ------------------------------------------------------------ */
@media (max-width: 78rem) {
  .admin-kpi-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .admin-popular-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 60rem) {
  .admin-shell .site-header-inner {
    gap: 0.7rem;
    padding-inline: 0.8rem;
  }

  .admin-shell .section-tabs .tab-icon,
  .admin-shell .user-name {
    display: none;
  }

  .admin-workspace {
    padding-inline: 1rem;
  }

  .admin-groups-layout {
    grid-template-columns: 1fr;
  }

  .admin-groups-sidebar {
    position: static;
    max-height: none;
  }

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

  .admin-profile-strip dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 44rem) {
  .admin-shell .site-header-inner {
    overflow-x: auto;
  }

  .admin-shell .site-logo-text,
  .admin-shell .theme-toggle,
  .admin-shell .user-avatar,
  .admin-shell .user-name,
  .admin-shell .user-menu-logged-in > .btn:not(:last-child) {
    display: none;
  }

  .admin-shell .section-tabs {
    flex-shrink: 0;
  }

  .admin-shell .section-tabs .tab {
    padding-inline: 0.55rem;
    font-size: 0.75rem;
  }

  .admin-page-header,
  .admin-student-header,
  .admin-available-heading {
    align-items: stretch;
    flex-direction: column;
    gap: 1rem;
  }

  .admin-kpi-grid,
  .admin-detail-kpis,
  .admin-signal-grid,
  .admin-access-grid {
    grid-template-columns: 1fr;
  }

  .admin-popular-panel {
    grid-column: auto;
  }

  .admin-kpi-card {
    min-height: 7.5rem;
  }

  .admin-toolbar,
  .admin-local-filters {
    align-items: stretch;
    flex-direction: column;
  }

  .admin-toolbar > *,
  .admin-local-filters > *,
  .admin-field,
  .admin-local-filters .admin-search-field {
    width: 100%;
    max-width: none;
  }

  .admin-search-field {
    flex-basis: auto;
  }

  .admin-content-list li {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.3rem;
  }

  .admin-content-metrics {
    text-align: left;
  }

  .admin-student-identity {
    align-items: flex-start;
  }

  .admin-profile-strip dl,
  .admin-group-list {
    grid-template-columns: 1fr;
  }

  .admin-inline-search {
    width: 100%;
  }

  .join-card > .btn + .btn {
    margin: 0.5rem 0 0;
  }

  .join-card > .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .admin-spinner {
    animation-duration: 1.4s;
  }
}