/* Shared Edutain Hub primitives; foundations and tokens live in portal-base.css. */
.site-shell {
  min-height: 100vh;
}

body {
  background: var(--bg);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-control);
  background: var(--text);
  color: #fff;
  font-weight: 700;
  transform: translateY(-200%);
}

.skip-link:focus {
  color: #fff;
  transform: translateY(0);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  border: 0 !important;
  white-space: nowrap !important;
}

.new-tab-indicator [aria-hidden="true"] {
  font-size: 0.9em;
}

body > header {
  position: sticky;
  z-index: 20;
  top: 0;
  padding-block: 0.7rem;
  box-shadow: 0 1px 0 rgb(22 32 42 / 4%);
}

body > header nav {
  gap: 0.2rem;
}

body > header nav strong {
  margin-right: 0.45rem;
}

body > header nav a {
  border-radius: var(--radius-control);
  padding: 0.35rem 0.5rem;
  white-space: nowrap;
}

body > header nav a:hover {
  background: var(--surface-muted);
  text-decoration: none;
}

body > header nav a[aria-current="page"] {
  background: var(--accent-soft);
  text-decoration: none;
}

.nav-group {
  position: relative;
}

.nav-group summary {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  border-radius: var(--radius-control);
  padding: 0.35rem 0.5rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  white-space: nowrap;
}

.nav-group summary::-webkit-details-marker {
  display: none;
}

.nav-group summary::after {
  content: "";
  width: 0.48rem;
  height: 0.48rem;
  margin: -0.2rem 0 0 0.08rem;
  border-right: 2px solid currentcolor;
  border-bottom: 2px solid currentcolor;
  color: var(--muted);
  transform: rotate(45deg);
  transition: transform 120ms ease;
}

.nav-group[open] summary::after {
  margin-top: 0.2rem;
  transform: rotate(225deg);
}

.nav-group summary:hover,
.nav-group[open] summary {
  background: var(--surface-muted);
}

.nav-group.is-active summary {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
}

.nav-menu {
  position: absolute;
  z-index: 30;
  top: calc(100% + 0.35rem);
  left: 0;
  display: grid;
  min-width: 12rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 0.35rem;
  background: var(--surface);
  box-shadow: var(--shadow-menu);
}

.nav-group:last-child .nav-menu {
  right: 0;
  left: auto;
}

body > header nav .nav-menu a {
  padding: 0.5rem 0.65rem;
}

body > header > div {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.9rem;
}

.logout-form {
  margin: 0;
}

main {
  padding-top: clamp(1.5rem, 4vw, 2.5rem);
  padding-bottom: 3rem;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.page-header h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
  line-height: 1.2;
}

.page-header > div:first-child {
  min-width: 0;
}

.page-header p {
  margin: 0.35rem 0 0;
}

.panel {
  min-width: 0;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-panel);
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.25rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
}

.panel-heading h2 {
  margin: 0;
  font-size: 1rem;
}

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

.detail-grid-wide {
  grid-column: 1 / -1;
}

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

.detail-item {
  min-width: 0;
}

.detail-item-wide {
  grid-column: 1 / -1;
}

.detail-label {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.actions > a:not(.button),
.row-actions > a,
.inline-actions > a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  padding: 0.45rem 0.7rem;
  background: var(--surface);
  color: var(--text);
  line-height: 1.2;
  text-decoration: none;
}

.panel-heading .actions > a:not(.button),
.row-actions > a,
.inline-actions > a {
  min-height: 1.9rem;
  padding: 0.3rem 0.55rem;
  font-size: 0.9rem;
}

.row-actions,
.inline-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  line-height: 1.2;
  text-decoration: none;
}

.button:hover,
button:hover {
  border-color: #aab4bf;
  text-decoration: none;
}

.button:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.button-primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.button-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  border-color: #f3b7b2;
  border-style: solid;
  border-width: 1px;
  border-radius: var(--radius-control);
  padding: 0.45rem 0.7rem;
  background: var(--surface);
  color: var(--danger);
  line-height: 1.2;
  text-decoration: none;
}

.actions > a.button-danger,
.inline-actions > a.button-danger,
.row-actions > a.button-danger {
  color: var(--danger);
}

.danger,
button.danger {
  border-color: var(--danger);
  background: var(--danger);
  color: #fff;
}

.danger:hover,
button.danger:hover {
  border-color: #8f1c13;
  background: #8f1c13;
}

.button-danger:hover {
  border-color: var(--danger);
  background: #fef2f2;
}

.button-small {
  min-height: 1.9rem;
  padding: 0.3rem 0.55rem;
  font-size: 0.9rem;
}

.row-link {
  color: var(--accent-strong);
  font-weight: 700;
  text-decoration: none;
}

.row-link:hover {
  text-decoration: underline;
}

.table-actions {
  white-space: nowrap;
}

tbody tr {
  transition: background-color 120ms ease;
}

tbody tr:hover {
  background: var(--surface-muted);
}

.status {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 1.35;
}

.status-active {
  border-color: var(--success-border);
  background: var(--success-bg);
  color: var(--success);
}

.muted {
  color: var(--muted);
}

.empty-state {
  padding: 1.5rem 1rem;
  color: var(--muted);
  text-align: center;
}

td.empty-state {
  padding: 1.75rem 1rem;
}

.stack {
  display: grid;
  gap: 0.85rem;
}

.stack-item + .stack-item {
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

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

.wide {
  grid-column: 1 / -1;
}

.summary-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 1rem;
}

.summary-card {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 1rem;
  background: var(--surface);
  box-shadow: var(--shadow-panel);
}

.summary-card h2 {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.amount {
  font-weight: 800;
  white-space: nowrap;
}

.warning-text {
  color: var(--danger);
  font-weight: 700;
}

.notice {
  margin: 1rem;
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-control);
  padding: 0.75rem;
  background: var(--warning-bg);
}

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

.choice-card {
  display: grid;
  gap: 0.75rem;
  align-content: start;
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 1.1rem;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-panel);
  text-decoration: none;
  transition: border-color 120ms ease, box-shadow 120ms ease, transform 120ms ease;
}

a.choice-card:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgb(22 32 42 / 8%);
  transform: translateY(-1px);
}

.choice-card h2,
.choice-card p {
  margin: 0;
}

.choice-card h2 {
  font-size: 1.1rem;
}

.choice-card .button {
  justify-self: start;
}

.auth-shell {
  width: min(28rem, 100%);
  margin: clamp(2rem, 8vh, 5rem) auto 0;
}

.auth-shell h1 {
  margin: 0 0 0.35rem;
}

.auth-shell > p {
  margin: 0 0 1rem;
}

.auth-shell form {
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 1.25rem;
  background: var(--surface);
  box-shadow: 0 8px 28px rgb(22 32 42 / 8%);
}

.auth-shell form p {
  display: grid;
  gap: 0.3rem;
  margin: 0 0 1rem;
}

.auth-shell form .field {
  margin-bottom: 1rem;
}

.auth-shell label {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.auth-shell input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  padding: 0.6rem 0.7rem;
  font: inherit;
}

.auth-shell button {
  width: 100%;
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.filter-panel {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 0.85rem 1rem;
  background: var(--surface);
}

.filter-form {
  display: flex;
  align-items: flex-end;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-field {
  display: grid;
  gap: 0.25rem;
  min-width: 10rem;
  flex: 1 1 10rem;
}

.filter-field label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.filter-field input,
.filter-field select {
  width: 100%;
  min-height: 2.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  padding: 0.45rem 0.6rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

.filter-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.filter-actions button {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.panel-form {
  padding: 1rem;
}

.form-sections {
  display: grid;
  gap: 0;
}

.form-section {
  padding: 0 0 1.25rem;
}

.form-section + .form-section {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.form-section-heading {
  margin-bottom: 1rem;
}

.form-section-heading h2 {
  margin: 0;
  font-size: 1.05rem;
}

.form-section-heading p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.timing-summary {
  display: flex;
  align-items: center;
  min-height: 2.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  padding: 0.55rem 0.65rem;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 700;
}

.availability-status {
  grid-column: 1 / -1;
  min-height: 1.5rem;
  border-radius: var(--radius-control);
  color: var(--muted);
  font-size: 0.92rem;
}

.availability-status.is-checking {
  color: var(--muted);
}

.availability-status.is-available {
  color: var(--success);
}

.availability-status.has-conflict,
.availability-status.has-error {
  border: 1px solid #fecaca;
  padding: 0.6rem 0.7rem;
  background: #fef2f2;
  color: var(--danger);
  font-weight: 700;
}

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

.field {
  min-width: 0;
}

.field-wide {
  grid-column: 1 / -1;
}

.field > label,
.choice-fieldset > legend,
.checkbox-list > label {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.choice-fieldset {
  min-width: 0;
  margin: 0;
  border: 0;
  padding: 0;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  padding: 0.55rem 0.65rem;
}

.field textarea {
  min-height: 7rem;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  outline: 3px solid var(--focus);
}

.field.has-errors input,
.field.has-errors select,
.field.has-errors textarea {
  border-color: var(--danger);
}

.checkbox-field,
.checkbox-list > div {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.checkbox-field input,
.checkbox-list input {
  width: auto;
}

.checkbox-field label,
.checkbox-list label {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 400;
  text-transform: none;
}

.checkbox-list {
  display: grid;
  gap: 0.4rem;
}

.form-error-summary {
  margin-bottom: 1.25rem;
  border: 2px solid var(--danger);
  border-radius: var(--radius-panel);
  padding: 0.85rem 1rem;
  background: #fef2f2;
  color: var(--text);
}

.capacity-warning {
  margin-bottom: 1.25rem;
  border: 1px solid var(--warning-border);
  border-radius: var(--radius-panel);
  padding: 0.85rem 1rem;
  background: var(--warning-bg);
}

.capacity-warning p {
  margin: 0 0 0.6rem;
}

.capacity-warning .checkbox-field {
  color: var(--text);
  font-size: 1rem;
  font-weight: 400;
  text-transform: none;
}

.capacity-warning .checkbox-field input {
  width: auto;
}

.form-error-summary h2 {
  margin: 0 0 0.35rem;
  color: var(--danger);
  font-size: 1rem;
}

.form-error-summary ul {
  margin: 0;
  padding-left: 1.25rem;
}

.form-error-summary a {
  color: var(--danger);
  font-weight: 700;
}

.field-help {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.errors {
  margin-top: 0.35rem;
  color: var(--danger);
}

.errors ul {
  margin: 0;
  padding-left: 1.2rem;
}


.student-picker-status {
  min-height: 1.35rem;
  margin-bottom: 0.6rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.student-picker-status.is-empty {
  border: 1px dashed var(--border);
  border-radius: var(--radius-control);
  padding: 0.7rem;
  background: var(--surface-muted);
}

.student-picker-status.has-update {
  color: var(--accent-strong);
  font-weight: 700;
}

.student-picker-options > div {
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.student-picker-options > div > div label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-height: 3rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 0.7rem 0.8rem;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 1rem;
  text-transform: none;
  transition: border-color 120ms ease, background-color 120ms ease;
}

.student-picker-options > div > div label:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.student-picker-options input {
  width: 1.05rem;
  height: 1.05rem;
  flex: 0 0 auto;
  accent-color: var(--accent);
}

.student-picker-options label:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent);
}

.help,
.field-help {
  margin-top: 0.3rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.errors {
  margin-top: 0.35rem;
  color: var(--danger);
  font-size: 0.9rem;
}

.errors ul {
  margin: 0;
  padding-left: 1.2rem;
}

.form-errors {
  margin: 0 0 1rem;
  border: 1px solid #fecaca;
  border-radius: var(--radius-control);
  padding: 0.7rem 0.8rem;
  background: #fef2f2;
}

.form-actions {
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}

.section-nav,
.status-tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.section-nav a,
.status-tabs a {
  flex: 0 0 auto;
  padding: 0.65rem 0.8rem;
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
}

.section-nav a[aria-current="page"],
.status-tabs a[aria-current="page"] {
  border-bottom: 3px solid var(--accent);
  color: var(--accent-strong);
}

.filter-panel {
  margin-bottom: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 1rem;
  background: var(--surface);
}

.filter-form {
  display: grid;
  align-items: end;
  gap: 0.8rem;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.filter-field label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.filter-field input,
.filter-field select {
  width: 100%;
  min-height: 2.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-control);
  padding: 0.45rem 0.55rem;
  background: var(--surface);
  color: var(--text);
  font: inherit;
}

.filter-actions {
  display: flex;
  gap: 0.4rem;
}

.summary-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 1rem;
}

.summary-card {
  display: grid;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-panel);
  padding: 1rem;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}

.summary-card span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}

.summary-card strong { font-size: 1.25rem; }
.summary-card-warning { border-color: #f4c36a; background: #fffbeb; }
.compact-list { display: grid; }

.compact-list > a {
  display: grid;
  gap: 0.15rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
}

.compact-list > a span { color: var(--muted); font-size: 0.9rem; }

.status-badge {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
  background: var(--surface-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.status-paid,
.status-collected { background: var(--success-bg); color: var(--success); }
.status-draft { background: #fffbeb; color: #854d0e; }

.pagination {
  display: flex;
  justify-content: center;
  gap: 1rem;
  padding: 1rem;
}

.finance-action-card,
.finance-detail-table { margin-top: 1rem; }
.stacked-form { display: grid; gap: 0.85rem; max-width: 38rem; padding: 1rem; }
.exception-stack { display: grid; gap: 1rem; }

.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;
}

@media (max-width: 800px) {
  .page-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .detail-grid,
  .details,
  .form-grid,
  .grid,
  .summary-grid,
  .choice-grid {
    grid-template-columns: 1fr;
  }

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

  .student-picker-options > div {
    grid-template-columns: 1fr;
  }

  .detail-grid-wide,
  .detail-item-wide,
  .field-wide {
    grid-column: auto;
  }

  .wide {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .page-header .actions,
  .page-header .button,
  .form-actions .button,
  .form-actions button {
    width: 100%;
  }

  .panel-heading {
    align-items: flex-start;
    flex-direction: column;
  }
}

/* Shared application shell. Native disclosure remains usable without JavaScript. */
.site-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-6);
  padding: var(--space-3) var(--space-8);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.brand-logo {
  display: block;
  width: 9rem;
  max-width: 100%;
  height: auto;
}

.site-brand:hover { text-decoration: none; }
.site-navigation { min-width: 0; }
.navigation-toggle { display: none; }
.navigation-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.site-header nav { min-width: 0; }
.site-header nav > a,
.nav-group summary,
.site-header .account-link,
.site-header button {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
}

.site-header .account-navigation {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  flex: 0 0 auto;
  font-size: 0.9rem;
}
.account-link { overflow-wrap: anywhere; }
button:disabled,
.button[aria-disabled="true"] { cursor: not-allowed; opacity: 0.6; }

@media (max-width: 1100px) {
  .site-header { gap: var(--space-4); padding-inline: var(--space-4); }
  .navigation-content { flex-wrap: wrap; gap: var(--space-2); }
}

@media (max-width: 800px) {
  body > .site-header {
    position: sticky;
    align-items: center;
    grid-template-columns: minmax(0, 1fr) auto;
    min-height: 4rem;
    padding-block: var(--space-2);
  }

  .site-navigation { position: static; }
  .navigation-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: 2.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-control);
    padding: var(--space-2) var(--space-3);
    color: var(--text);
    background: var(--surface);
    cursor: pointer;
    list-style: none;
  }
  .navigation-toggle::-webkit-details-marker { display: none; }
  .navigation-toggle::before { content: "☰"; font-size: 1.1rem; }
  .site-navigation[open] .navigation-toggle { background: var(--accent-soft); }

  .navigation-content {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: grid;
    max-height: calc(100dvh - 4rem);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: var(--space-4);
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-menu);
  }
  .site-header nav {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
    gap: var(--space-1);
  }
  .site-header nav > a,
  .nav-group summary { width: 100%; padding-inline: var(--space-3); }
  .nav-menu,
  .nav-group:last-child .nav-menu {
    position: static;
    min-width: 0;
    margin: var(--space-1) 0 var(--space-2);
    box-shadow: none;
  }
  .site-header nav .nav-menu a { white-space: normal; min-height: 2.75rem; }
  .site-header .account-navigation {
    flex-wrap: wrap;
    justify-content: space-between;
    border-top: 1px solid var(--border);
    padding-top: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-group summary::after,
  .choice-card,
  tbody tr {
    transition: none;
  }

  a.choice-card:hover {
    transform: none;
  }
}