/**
 * KMHCO ERP Component Library
 *
 * Component CSS for the shared partial library (issue #70).
 * All values use design-system.css tokens only — no raw values.
 * Mobile-first; layered upward with min-width queries.
 */

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.page {
  max-width: var(--layout-max);
  margin: 0 auto;
  padding: var(--space-4);
}
@media (min-width: 768px) {
  .page { padding: var(--space-6); }
}

.stack > * + * { margin-top: var(--space-5); }

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.cluster--sm {
  gap: var(--space-2);
}

.cluster--between {
  justify-content: space-between;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

/* ============================================
   ERROR PAGES (Issue #279)
   ============================================ */
/* In-shell 403 / 404 page styles. The 500 page is fully self-contained
   (inline critical CSS) because Django renders it with an empty context —
   see templates/500.html. Tokens only; no raw values. */

.error-page {
  max-width: 36rem;            /* matches prose width in design system */
  margin-inline: auto;
}

.error-page__lede {
  font-size: var(--font-size-lg);
  color: var(--color-ink-900);
  margin: 0 0 var(--space-5);
}

.error-page__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block: var(--space-5);
}

.error-page__meta {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  margin-top: var(--space-6);
}

.error-page__meta code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--color-cream-100);
  border: 1px solid var(--color-border-subtle);
  border-radius: 6px;
  padding: 0.0625rem 0.3125rem;
}

.tnum {
  font-variant-numeric: tabular-nums;
}

/* Eyebrow — uppercase tracked label (ledger-rule motif, principles §7) */
.eyebrow {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-brand-600);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin: 0;
}

/* Display font utility */
.font-display {
  font-family: var(--font-display);
}

/* ============================================
   BUTTON
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  border: var(--border-thin);
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-fast),
              color var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  height: var(--control-height-md);
  padding: 0 var(--space-4);
}

.btn:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: 2px;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  background: var(--color-brand-200);
  color: var(--color-ink-300);
  border-color: var(--color-border-subtle);
  cursor: not-allowed;
}

/* Sizes */
.btn--sm {
  height: var(--control-height-sm);
  padding: 0 var(--space-3);
  font-size: var(--font-size-sm);
}

.btn--md {
  height: var(--control-height-md);
  padding: 0 var(--space-4);
  font-size: var(--font-size-base);
}

.btn__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn__label {
  display: inline-flex;
  align-items: center;
}

.icon {
  display: inline-block;
  width: var(--icon-size-md);
  height: var(--icon-size-md);
  flex: 0 0 auto;
  object-fit: contain;
  vertical-align: middle;
}

.btn--sm .btn__icon,
.chip__icon,
.table-sort__icon,
.alert__icon { width: var(--icon-size-sm); height: var(--icon-size-sm); }

.btn--icon-lg > .icon { width: var(--icon-size-lg); height: var(--icon-size-lg); }

.icon-loading { display: inline-flex; }
.icon-loading .icon { animation: icon-spin 1s linear infinite; }
@keyframes icon-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .icon-loading .icon { animation-duration: 2s; }
}

.btn--icon {
  width: var(--control-height-md);
  padding: 0;
}

.btn--icon-lg {
  width: calc(var(--control-touch-min) + var(--space-5));
  height: var(--control-touch-min);
  font-size: var(--font-size-lg);
}

.btn--sm.btn--icon {
  width: var(--control-height-sm);
  padding: 0;
}

/* ============================================
   ICON-ONLY TOOLTIP (docs/design/components.md
   "Icon-only button + tooltip")
   ============================================
   A CSS-only tooltip paired with an icon-only `.btn--icon` control. The
   visible hint text lives in `[data-tooltip]`; the same string must already
   be the button's `aria-label` (single-string contract). The tooltip is a
   progressive enhancement — keyboard and assistive-technology users get the
   accessible name whether or not the bubble is ever visible. */

[data-tooltip] {
  position: relative;
}

/* The bubble — built from a `::after` carrying the attribute's content. */
[data-tooltip]:hover:not(:disabled):not([aria-disabled="true"])::after,
[data-tooltip]:focus-visible:not(:disabled):not([aria-disabled="true"])::after {
  content: attr(data-tooltip);
  position: absolute;
  /* Sit above the control by default; clamp inside the viewport edge so the
     bubble never overflows on narrow row-action strips. */
  bottom: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%);
  max-width: 18rem;
  padding: var(--space-2) var(--space-3);
  background: var(--color-ink-900);
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.4;
  text-align: center;
  white-space: normal;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  pointer-events: none;
  z-index: 10;
  /* Slight entry so the bubble feels like a hover hint, not a flash. */
  opacity: 1;
  transition: opacity 80ms ease-out;
}

/* Arrow — a small filled triangle pointing down to the control. */
[data-tooltip]:hover:not(:disabled):not([aria-disabled="true"])::before,
[data-tooltip]:focus-visible:not(:disabled):not([aria-disabled="true"])::before {
  content: "";
  position: absolute;
  bottom: calc(100% + var(--space-2) - 6px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--color-ink-900);
  pointer-events: none;
  z-index: 10;
}

/* Keep a row-action strip readable on narrow widths — let the bubble
   wrap rather than clip; the `max-width` above combined with `text-align:
   center` handles short hints, longer ones wrap within the cap. */
@media (prefers-reduced-motion: reduce) {
  [data-tooltip]:hover::after,
  [data-tooltip]:focus-visible::after { transition: none; }
}

/* Variants */
.btn--primary {
  background: var(--color-brand-600);
  color: #fff;
  border-color: var(--color-brand-600);
}
.btn--primary:hover:not(:disabled) { background: var(--color-brand-500); }
.btn--primary:active:not(:disabled) { background: var(--color-brand-700); }

.btn--secondary {
  background: var(--color-surface-card);
  color: var(--color-ink-900);
}
.btn--secondary:hover:not(:disabled) { background: var(--color-surface-hover); }

.btn--ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-ink-700);
}
.btn--ghost:hover:not(:disabled) { background: var(--color-brand-50); }

.btn--danger {
  background: var(--color-status-error);
  color: #fff;
  border-color: var(--color-status-error);
}
.btn--danger:hover:not(:disabled) { background: var(--color-status-error-hover); }

.btn--link {
  background: transparent;
  border: none;
  color: var(--color-brand-600);
  padding: 0;
  height: auto;
}
.btn--link:hover:not(:disabled) { text-decoration: underline; }

/* ============================================
   FORM FIELD
   ============================================ */

.field {
  margin-bottom: var(--space-4);
}

.field__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-700);
  margin-bottom: var(--space-1);
}

.field__required {
  color: var(--color-status-error);
  margin-left: 2px;
}

.field__control {
  display: block;
  width: 100%;
  height: var(--control-height-md);
  padding: 0 var(--space-3);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  color: var(--color-ink-900);
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}
.field__control:focus {
  outline: none;
  border-color: var(--color-brand-600);
  box-shadow: 0 0 0 3px var(--color-brand-100);
}

.field textarea.field__control {
  height: auto;
  min-height: 100px;
  padding: var(--space-2) var(--space-3);
  line-height: var(--line-height-normal);
}

.field select.field__control,
.toolbar__filters select.field__control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235f6f66' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

.field--checkbox,
.field--radio {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.field--checkbox .field__label,
.field--radio .field__label {
  margin-bottom: 0;
  order: 1;
}
.field--checkbox .field__control,
.field--radio .field__control {
  width: auto;
  height: auto;
  order: 0;
}

.field--error .field__control {
  border-color: var(--color-status-error);
}
.field--error .field__control:focus {
  box-shadow: 0 0 0 3px var(--color-status-error-bg);
}

.field__help {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  margin-top: var(--space-1);
}

.field__error {
  font-size: var(--font-size-sm);
  color: var(--color-status-error);
  margin-top: var(--space-1);
}

.field--group {
  border: none;
  padding: 0;
  margin-bottom: var(--space-4);
}
.field--group legend {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-700);
  margin-bottom: var(--space-2);
}

/* ============================================
   CHECKBOX / RADIO GROUP (mobile-first choice list)
   Used by the form-field partial when the bound widget is
   CheckboxSelectMultiple or RadioSelect. See docs/design/components.md.
   ============================================ */

.field--choice-group {
  border: var(--border-thin);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  margin: 0 0 var(--space-4);
  background: var(--color-surface-card);
}
.field--choice-group__legend {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-700);
  margin-bottom: var(--space-2);
  padding: 0;
}
.field--choice-group__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.field--choice-group__item {
  margin: 0;
}
.field--choice-group__label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-2);
  min-height: var(--control-touch-min); /* 44px touch target */
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--color-ink-900);
  font-size: var(--font-size-base);
  line-height: var(--line-height-snug);
}
.field--choice-group__label:hover {
  background: var(--color-surface-hover);
}
.field--choice-group__label input[type="checkbox"],
.field--choice-group__label input[type="radio"] {
  width: 1.125rem;   /* 18px visual */
  height: 1.125rem;
  margin: 0;
  flex-shrink: 0;
  accent-color: var(--color-brand-600);
}
.field--choice-group__label input[type="checkbox"]:focus-visible,
.field--choice-group__label input[type="radio"]:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: 2px;
}
.field--choice-group__text {
  flex: 1 1 auto;
}
.field--choice-group + .field__help,
.field--choice-group + .field__error {
  margin-left: var(--space-1);
}
.field--choice-group.field--error {
  border-color: var(--color-status-error);
}

/* ============================================
   STATUS CHIP / BADGE
   ============================================ */

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.chip__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
}

.chip__label {
  display: inline-flex;
  align-items: center;
}

.chip-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  vertical-align: middle;
}

.chip--success { color: var(--color-status-success); background: var(--color-status-success-bg); }
.chip--warning { color: var(--color-status-warning); background: var(--color-status-warning-bg); }
.chip--error   { color: var(--color-status-error);   background: var(--color-status-error-bg); }
.chip--info    { color: var(--color-status-info);    background: var(--color-status-info-bg); }
.chip--neutral { color: var(--color-ink-700);       background: var(--color-cream-200); }

/* ============================================
   CARD
   ============================================ */

.card {
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-width: 0;
  max-width: 100%;
}
.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4) 0;
  min-width: 0;
  max-width: 100%;
}
.card__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  color: var(--color-ink-900);
  margin: 0;
  word-break: break-word;
}
.card__body {
  padding: var(--space-4);
  min-width: 0;
  max-width: 100%;
}
.card__footer {
  padding: 0 var(--space-4) var(--space-4);
}

.card--link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: box-shadow var(--transition-fast);
}
.card--link:hover { box-shadow: var(--shadow-md); }

.card--stat {
  text-align: center;
  padding: var(--space-5);
}
.card--stat .stat__value {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-ink-900);
  font-variant-numeric: tabular-nums;
}
.card--stat .stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  margin-top: var(--space-1);
}

/* Standalone stat display (used outside card--stat) */
.stat-group {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
}

/* ============================================
   DATA TABLE
   ============================================ */

.table-wrapper {
  overflow: hidden;
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  background: var(--color-surface-card);
  min-width: 0;
  max-width: 100%;
}

.table-region {
  min-width: 0;
  max-width: 100%;
}

.table-viewport {
  max-height: 65vh;
  overflow: auto;
  min-width: 0;
  max-width: 100%;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
}

.data-table caption {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  text-align: left;
  caption-side: bottom;
}

.data-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 2px solid var(--color-border-default);
  background: var(--color-surface-subtle);
}

.data-table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-500);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-ink-900);
  font-variant-numeric: tabular-nums;
}

.data-table--compact th {
  padding-block: var(--space-2);
}

.data-table--compact td {
  padding-block: var(--space-2);
}

.data-table--compact .chip {
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
}

.data-table tbody tr:hover { background: var(--color-surface-hover); }

.table-sort {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: inherit;
  text-decoration: none;
}

.table-sort:hover {
  color: var(--color-brand-600);
}

.table-sort:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.table-sort__icon {
  color: var(--color-ink-400);
  font-size: var(--font-size-sm);
}

.table-header-controls {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.filter-popover {
  position: relative;
}

.filter-popover--mobile {
  display: none;
}

.filter-popover__mobile-label {
  display: none;
}

.filter-popover__trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--control-height-sm);
  min-height: var(--control-height-sm);
  border-radius: var(--radius-md);
  cursor: pointer;
  list-style: none;
}

.filter-popover__trigger::-webkit-details-marker {
  display: none;
}

.filter-popover__trigger:hover,
.filter-popover__trigger:focus-visible,
.filter-popover--active .filter-popover__trigger {
  background: var(--color-brand-50);
}

.filter-popover--active .filter-popover__trigger {
  outline: 1px solid var(--color-brand-600);
}

.filter-popover__panel {
  position: absolute;
  z-index: 5;
  top: calc(100% + var(--space-1));
  left: 0;
  display: grid;
  gap: var(--space-3);
  min-width: 16rem;
  padding: var(--space-3);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  background: var(--color-surface-card);
  box-shadow: var(--shadow-lg);
  color: var(--color-ink-900);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  letter-spacing: normal;
  text-transform: none;
}

.filter-popover__search {
  width: 100%;
}

.filter-popover__options {
  display: grid;
  gap: var(--space-1);
  max-height: 14rem;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  border: 0;
}

.filter-popover__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--control-touch-min);
  padding-inline: var(--space-2);
  border-radius: var(--radius-md);
  cursor: pointer;
}

.filter-popover__option:hover {
  background: var(--color-surface-hover);
}

.filter-popover__actions {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding-top: var(--space-2);
  border-top: var(--border-thin);
}

.table-toolbar.toolbar--list {
  margin-bottom: var(--space-3);
}

.table-toolbar .toolbar__filters {
  max-width: 36rem;
}

.table-toolbar__primary-actions {
  flex: 0 0 auto;
}

.table-filter-strip {
  display: none;
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.active-filters__label {
  color: var(--color-ink-500);
  font-size: var(--font-size-sm);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: var(--control-height-sm);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  background: var(--color-brand-50);
  color: var(--color-brand-700);
  font-size: var(--font-size-sm);
  text-decoration: none;
}

.active-filters__clear {
  color: var(--color-brand-700);
  font-size: var(--font-size-sm);
}

/* Responsive: compact record cards while the persistent sidebar constrains
   the content column; the full table begins at lg. */
@media (max-width: 1023px) {
  .table-controls {
    position: sticky;
    top: 56px;
    z-index: 40;
    padding-block: var(--space-2);
    background: var(--color-surface-page);
    border-bottom: 1px solid var(--color-border-subtle);
  }

  .table-toolbar.toolbar--list {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    flex-wrap: nowrap;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
  }

  .table-toolbar .toolbar__filters {
    width: 100%;
    max-width: none;
  }

  .table-toolbar__primary-actions {
    flex-wrap: nowrap;
  }

  .table-filter-strip {
    position: relative;
    display: flex;
    gap: var(--space-2);
    min-width: 0;
    margin-bottom: var(--space-2);
    padding-bottom: var(--space-1);
    overflow-x: auto;
    scrollbar-width: none;
  }

  .table-filter-strip:empty {
    display: none;
  }

  .table-filter-strip:has(.filter-popover[open]) {
    overflow: visible;
  }

  .table-filter-strip::-webkit-scrollbar {
    display: none;
  }

  .filter-popover--mobile {
    display: block;
    position: static;
    flex: 0 0 auto;
  }

  .filter-popover--mobile .filter-popover__trigger {
    gap: var(--space-1);
    min-height: var(--control-touch-min);
    padding-inline: var(--space-2);
    border: var(--border-thin);
  }

  .filter-popover__mobile-label {
    display: inline;
    color: var(--color-ink-700);
    font-size: var(--font-size-sm);
  }

  .filter-popover--mobile .filter-popover__panel {
    top: calc(100% + var(--space-1));
    right: 0;
    left: 0;
    width: 100%;
    min-width: 0;
    max-width: none;
  }

  .active-filters {
    flex-wrap: nowrap;
    margin-bottom: var(--space-2);
    overflow-x: auto;
    scrollbar-width: none;
  }

  .active-filters > .cluster {
    flex-wrap: nowrap;
  }

  .active-filters__label,
  .active-filters__clear,
  .filter-chip {
    flex: 0 0 auto;
  }

  .active-filters::-webkit-scrollbar {
    display: none;
  }

  .table-viewport {
    max-height: none;
    overflow: visible;
  }

  .data-table thead {
    position: static;
  }

  .data-table thead { display: none; }
  .table-wrapper {
    overflow: visible;
    border: 0;
    background: transparent;
  }
  .table-wrapper:has(.data-table__empty-row) {
    overflow: hidden;
    border: var(--border-thin);
    background: var(--color-surface-card);
  }
  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td { display: block; }
  .data-table tbody {
    display: grid;
    gap: var(--space-3);
  }
  .data-table tr {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: var(--space-2) var(--space-3);
    padding: var(--space-4);
    border: var(--border-thin);
    border-radius: var(--radius-lg);
    background: var(--color-surface-card);
  }
  .data-table tr.data-table__empty-row {
    display: block;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
  }
  .data-table__empty-row td::before {
    content: none;
    display: none;
  }
  .data-table td {
    padding: 0;
    border-bottom: none;
    line-height: var(--line-height-normal);
    text-align: left;
  }
  .data-table td::before {
    content: attr(data-label);
    display: inline;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-ink-500);
    margin-right: var(--space-1);
  }

  .data-table td[data-mobile-role="hidden"] {
    display: none;
  }

  .data-table td[data-cell-role="primary"] {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }
  .data-table td[data-cell-role="primary"]::before {
    content: none;
    display: none;
  }
  .data-table td[data-cell-role="primary"] > * {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-ink-900);
    line-height: 1.3;
  }

  .data-table td[data-mobile-role="actions"] {
    display: flex;
    grid-column: 2;
    grid-row: 1;
    justify-content: flex-end;
    align-items: start;
  }
  .data-table td[data-mobile-role="actions"]::before {
    content: none;
    display: none;
  }

  .data-table td[data-mobile-role="meta"] {
    display: inline-flex;
    grid-column: 1;
    align-items: center;
    gap: var(--space-1);
    color: var(--color-ink-600);
    font-size: var(--font-size-sm);
  }
  .data-table td[data-mobile-role="meta"]::before {
    content: attr(data-label) ":";
    display: inline;
    margin: 0;
  }

  .data-table td[data-mobile-role="badge"] {
    grid-column: 2;
    grid-row: 2;
    justify-self: end;
  }

  .data-table td[data-mobile-role="badge"]::before {
    content: none;
    display: none;
  }

  .data-table td[data-mobile-role="body"] {
    grid-column: 1 / -1;
    margin-top: var(--space-2);
    color: var(--color-ink-700);
    font-size: var(--font-size-sm);
  }

  .data-table td[data-mobile-role="body"]::before {
    display: block;
    margin: 0 0 var(--space-1);
  }

  .data-table td[data-mobile-role="body"] .chip-list {
    display: flex;
  }
}

/* ============================================
   ROW ACTIONS (data tables) — touch-target + focus
   ----------------------------------------------
   The cluster lives inside a ``.data-table td``. On desktop the
   ``.btn--sm`` is 32px tall — below the 44px touch target floor. We
   wrap the visible control in extra padding so the hit-area is at
   least ``--control-touch-min`` while the visual size stays 32px.
   On mobile the cluster goes full-width (see the media query above)
   and each control expands to 44px tall.

   Focused state re-uses the standard ``.btn:focus-visible`` ring;
   the wrapper here is just to guarantee the touch target. */
.row-actions { display: inline-flex; gap: var(--space-2); align-items: center; }
.row-actions > * {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--control-touch-min);
  min-width: var(--control-touch-min);
}
.row-actions > .btn { min-height: var(--control-touch-min); }

.row-action {
  border: none;
  background: none;
  color: var(--color-ink-600);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

.row-action:hover {
  background: var(--color-surface-hover);
  color: var(--color-ink-900);
}

.row-action:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: 2px;
}

.row-action--danger {
  color: var(--color-status-error);
}

.row-action--danger:hover {
  background: var(--color-status-error-bg);
  color: var(--color-status-error);
}

.row-action[aria-disabled="true"] {
  color: var(--color-ink-300);
  cursor: not-allowed;
  pointer-events: none;
}

/* PNG icons (Issue #437) carry their own baked-in ink color, so `color`
   above has no effect on them — dim the image itself instead. */
.row-action[aria-disabled="true"] .icon,
.btn:disabled .icon,
.btn[aria-disabled="true"] .icon {
  opacity: 0.4;
}

.row-actions--icons {
  flex-wrap: nowrap;
}

.row-actions--icons > .row-action {
  flex: 0 0 var(--control-touch-min);
}

@media (min-width: 1024px) {
  .data-table--compact .row-actions > * {
    min-height: var(--control-height-sm);
    min-width: var(--control-height-sm);
  }

  .data-table--compact .row-actions--icons > .row-action {
    flex-basis: var(--control-height-sm);
  }
}

/* ============================================
   CRUD DETAIL BASE
   ============================================ */

.detail-base__breadcrumb {
  margin-bottom: var(--space-3);
}

.detail-base__identity {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.detail-base__identity-copy {
  display: grid;
  gap: var(--space-2);
}

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

.detail-base__identity .page__title {
  margin: 0;
}

.detail-base__actions {
  margin-left: auto;
}

.detail-base__key-facts:empty {
  display: none;
}

.detail-base__tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
  overflow-x: auto;
}

@media (max-width: 767px) {
  .detail-base__tabs .tabs {
    display: flex;
    width: 100%;
    margin-bottom: 0;
  }
}

.detail-base__content {
  display: grid;
  gap: var(--space-4);
}

.detail-base__main,
.detail-base__aside {
  display: grid;
  align-content: start;
  gap: var(--space-4);
  min-width: 0;
}

.detail-base__aside:empty {
  display: none;
}

@media (min-width: 1024px) {
  .detail-base__content:has(> .detail-base__aside > *) {
    grid-template-columns: minmax(0, 2fr) minmax(16rem, 1fr);
  }

  .detail-base__content:not(:has(> .detail-base__aside > *)) {
    grid-template-columns: minmax(0, 1fr);
  }

  .detail-base__aside:not(:has(> *)) {
    display: none;
  }
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
}

.pagination__pages {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.pagination__page {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--control-height-sm);
  height: var(--control-height-sm);
  padding: 0 var(--space-2);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-ink-700);
  font-size: var(--font-size-sm);
}
.pagination__page:hover:not([aria-current]) { background: var(--color-surface-hover); }
.pagination__page[aria-current="page"] {
  background: var(--color-brand-600);
  color: #fff;
  border-color: var(--color-brand-600);
}
.pagination__page--disabled {
  color: var(--color-ink-300);
  pointer-events: none;
}

.pagination__info {
  color: var(--color-ink-500);
}

.pagination__icon {
  font-size: var(--font-size-base);
}

@media (max-width: 767px) {
  .pagination {
    align-items: stretch;
    flex-direction: column;
  }

  .pagination__pages {
    flex-wrap: wrap;
  }
}

/* ============================================
   MODAL / DIALOG
   ============================================ */

dialog.modal {
  border: none;
  border-radius: var(--radius-xl);
  padding: 0;
  max-width: min(560px, calc(100vw - var(--space-8)));
  box-shadow: var(--shadow-xl);
  background: var(--color-surface-card);
}
dialog.modal::backdrop {
  background: rgba(26, 31, 28, 0.4);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: var(--border-thin);
}

.modal__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  margin: 0;
}

.modal__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--control-touch-min);
  height: var(--control-touch-min);
  border: none;
  background: transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-ink-500);
  font-size: var(--font-size-lg);
}
.modal__close:hover { background: var(--color-brand-50); }

.modal__body {
  padding: var(--space-5);
  line-height: var(--line-height-normal);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: 0 var(--space-5) var(--space-5);
}

/* ============================================
   ALERT / INLINE MESSAGE
   ============================================ */

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
}

.alert--success { color: var(--color-status-success); background: var(--color-status-success-bg); }
.alert--warning { color: var(--color-status-warning); background: var(--color-status-warning-bg); }
.alert--error   { color: var(--color-status-error);   background: var(--color-status-error-bg); }
.alert--info    { color: var(--color-status-info);    background: var(--color-status-info-bg); }

.alert__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.alert__text {
  flex: 1;
}

.alert__message { flex: 1; }

.alert__dismiss {
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  opacity: 0.6;
  font-size: var(--font-size-lg);
  line-height: 1;
  padding: 0;
  min-width: var(--control-touch-min);
  min-height: var(--control-touch-min);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.alert__dismiss:hover { opacity: 1; }

/* ============================================
   EMPTY STATE
   ============================================ */

.empty-state {
  text-align: center;
  padding: var(--space-10) var(--space-4);
}

.empty-state__icon {
  display: block;
  width: var(--icon-size-lg);
  height: var(--icon-size-lg);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-3);
  opacity: 0.55;
}

.empty-state__heading {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  color: var(--color-ink-900);
  margin: 0 0 var(--space-2);
}

.empty-state__message {
  color: var(--color-ink-500);
  max-width: 40ch;
  margin: 0 auto var(--space-5);
}

.empty-state__read-only {
  color: var(--color-ink-500);
  font-size: var(--font-size-sm);
  max-width: 40ch;
  margin: 0 auto;
  font-style: italic;
}

/* ============================================
   LOADING INDICATOR
   ============================================ */

.htmx-indicator {
  opacity: 0;
  transition: opacity 200ms ease-in;
}
.htmx-request .htmx-indicator { opacity: 1; }
.htmx-request.htmx-indicator { opacity: 1; }

.skeleton {
  height: 1em;
  background: var(--color-cream-200);
  border-radius: var(--radius-sm);
  animation: skeleton-pulse 1.5s ease-in-out infinite;
}

@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ============================================
   BREADCRUMBS
   ============================================ */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  padding-bottom: var(--space-3);
}
.breadcrumbs a {
  color: var(--color-ink-500);
  text-decoration: none;
}
.breadcrumbs a:hover { color: var(--color-brand-600); }
.breadcrumbs [aria-current="page"] {
  color: var(--color-ink-700);
  font-weight: var(--font-weight-medium);
}

/* ============================================
   TABS
   ============================================ */

.tabs {
  display: flex;
  border-bottom: var(--border-thin);
  margin-bottom: var(--space-5);
  overflow-x: auto;
}

.tabs__tab {
  display: inline-flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  /* Touch-target ≥ 44px tall without changing the visual baseline. */
  min-height: var(--control-touch-min);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-ink-500);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color var(--transition-fast),
              border-color var(--transition-fast),
              background-color var(--transition-fast),
              outline-color var(--transition-fast);
}
/* Focused but not selected — outline + light brand-50 fill so the
   keyboard cursor is unmistakable, and visually distinct from the
   selected bottom-border treatment. */
.tabs__tab:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: -2px;
  background-color: var(--color-brand-50);
  color: var(--color-ink-900);
  border-bottom-color: var(--color-brand-300);
}
.tabs__tab:hover { color: var(--color-ink-700); }
.tabs__tab[aria-selected="true"] {
  color: var(--color-brand-600);
  border-bottom-color: var(--color-brand-600);
}
/* Selected AND focused — keep the brand-600 bottom border (selected)
   and add a 3px brand ring (focused). Both states must be visible. */
.tabs__tab[aria-selected="true"]:focus-visible {
  outline: 3px solid var(--color-brand-600);
  outline-offset: -3px;
  background-color: var(--color-brand-50);
}

/* Mobile tab select — hidden above md breakpoint (768px) */
.tabs__mobile-select {
  display: none;
  margin-bottom: var(--space-5);
}
.tabs__mobile-select .field__control {
  width: 100%;
}

@media (max-width: 767px) {
  .tabs {
    display: none;
  }
  .tabs__mobile-select {
    display: block;
  }
}

/* ============================================
   APP SHELL — NAV HEADER
   ============================================ */

.nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  height: 56px;
  padding: 0 var(--space-4);
  background: var(--color-brand-700);
  color: #fff;
}
.nav-header__left,
.nav-header__right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.nav-header__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: inherit;
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}
.nav-header__logo-img { height: 24px; width: auto; }

.nav-header__drawer-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--control-touch-min);
  height: var(--control-touch-min);
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  border-radius: var(--radius-md);
}
.nav-header__drawer-toggle:hover { background: rgba(255,255,255,0.1); }

@media (min-width: 768px) {
  .nav-header__drawer-toggle { display: none; }
}

.nav-header__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-brand-500);
  color: #fff;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.nav-header__user-toggle {
  display: flex;
  align-items: center;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-md);
  min-width: var(--control-touch-min);
  min-height: var(--control-touch-min);
  justify-content: center;
}
.nav-header__user-toggle:hover { background: rgba(255,255,255,0.1); }

.nav-header__user-name {
  font-size: var(--font-size-sm);
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
@media (max-width: 767px) {
  .nav-header__user-name { display: none; }
}

.nav-header__dropdown {
  position: absolute;
  top: 56px;
  right: var(--space-2);
  min-width: 180px;
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2) 0;
  z-index: 60;
}
.nav-header__dropdown[hidden] { display: none; }
.nav-header__dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-base);
  color: var(--color-ink-700);
  text-decoration: none;
}
.nav-header__dropdown-item:hover { background: var(--color-surface-hover); }
.nav-header__dropdown-item button {
  background: none;
  border: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  width: 100%;
  text-align: left;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ============================================
   APP SHELL — PRIMARY NAV
   ============================================ */

.nav-primary {
  width: 240px;
  flex-shrink: 0;
  border-right: var(--border-thin);
  background: var(--color-surface-card);
  padding: var(--space-4) 0;
  overflow-y: auto;
}

.nav-primary__list { list-style: none; margin: 0; padding: 0; }

.nav-primary__item { margin-bottom: var(--space-1); }

.nav-primary__link,
.nav-primary__group-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  font-size: var(--font-size-base);
  color: var(--color-ink-700);
  font-weight: var(--font-weight-medium);
  /* Touch-target ≥ 44px tall on touch UIs (padding + line-height). */
  min-height: var(--control-touch-min);
  line-height: 1.4;
}

.nav-primary__icon { flex-shrink: 0; }

.nav-primary__link:hover { background: var(--color-surface-hover); color: var(--color-ink-900); }

/* Focused but not current — outline + brand-50 fill so the keyboard
   cursor is unmistakable and visually distinct from the active
   left-rule treatment. */
.nav-primary__link:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: -2px;
  background: var(--color-brand-50);
  color: var(--color-ink-900);
}

.nav-primary__item--active > .nav-primary__link,
.nav-primary__item--active > .nav-primary__group-label {
  color: var(--color-brand-600);
  border-left: 3px solid var(--color-brand-600);
  padding-left: calc(var(--space-4) - 3px);
}
.nav-primary__item--active .nav-primary__link[aria-current="page"] {
  background: var(--color-brand-50);
}
/* Current AND focused — keep the active left rule and add a 3px focus ring
   on the opposite edge so both states are recognisable. */
.nav-primary__item--active > .nav-primary__link:focus-visible {
  outline: 3px solid var(--color-brand-600);
  outline-offset: -3px;
  background: var(--color-brand-50);
}

.nav-primary__group-label {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-3);
}

.nav-primary__sub { list-style: none; margin: 0; padding: 0; }

.nav-primary__sub-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4) var(--space-1) calc(var(--space-4) + var(--space-4));
  font-size: var(--font-size-base);
  color: var(--color-ink-500);
  text-decoration: none;
  /* Touch-target ≥ 44px tall. */
  min-height: var(--control-touch-min);
  line-height: 1.4;
}
.nav-primary__sub-link:hover { color: var(--color-ink-900); background: var(--color-surface-hover); }
.nav-primary__sub-link:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: -2px;
  background: var(--color-brand-50);
  color: var(--color-ink-900);
}
.nav-primary__sub-link[aria-current="page"] {
  color: var(--color-brand-600);
  background: var(--color-brand-50);
}

/* Off-canvas drawer (mobile) */
@media (max-width: 767px) {
  .nav-primary {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    height: 100dvh;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
  }
  .nav-primary[data-drawer-open] { transform: translateX(0); }

  .drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(26, 31, 28, 0.4);
  }
  .drawer-backdrop[hidden] { display: none; }
}

/* ============================================
   APP SHELL — LAYOUT
   ============================================ */

.app-layout {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
}

.app-layout > .page {
  flex: 1;
  min-width: 0;
  padding-top: var(--space-5);
}

.page__content {
  min-width: 0;
}

@media (min-width: 768px) {
  body {
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
  }

  .app-layout {
    overflow: hidden;
  }

  .nav-primary {
    min-height: 0;
  }

  .app-layout > .page {
    overflow-y: auto;
  }
}

@media (min-width: 1024px) {
  .page--wide {
    max-width: none;
    margin-inline: 0;
  }

  .page--crud-list {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
    overflow: hidden;
  }

  .page__content--crud-list,
  .page__content--crud-list > :only-child,
  .page__content--crud-list > .stack {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    min-height: 0;
  }

  .page--crud-list .table-region {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
    min-height: 0;
  }

  .page--crud-list .master-detail,
  .page--crud-list .master-detail__master {
    min-height: 0;
  }

  .page--crud-list .master-detail__master {
    display: flex;
    flex: 1 1 auto;
    flex-direction: column;
  }

  .page--crud-list .table-wrapper {
    flex: 1 1 auto;
    min-height: 0;
  }

  .page--crud-list .table-viewport {
    height: 100%;
    max-height: none;
  }
}

/* ============================================
   SCREEN-READER ONLY
   ============================================ */

.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;
}

/* ============================================
   ACCESSIBLE FOCUS
   ============================================ */

:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: 2px;
}

.messages-stack { margin-bottom: var(--space-4); }
.page__title--display {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  margin: 0 0 var(--space-5);
}

.skeleton-stack { padding: var(--space-4); }

/* ============================================
   AUTH PAGE (login, password reset)
   --------------------------------------------
   Auth screens sit outside the app shell as a
   centred card on the paper background. Styles
   extend the .card component; all values are
   design-system tokens — no raw values.
   ============================================ */

/* Layout primitive: vertically + horizontally centre the auth card */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--space-4);
}

/* Auth card — inherits .card background, border, radius, shadow */
.auth-card {
  width: 100%;
  max-width: 400px;
}

/* Centred brand block: logo → company eyebrow → brand title → subtitle */
.auth-card__brand {
  text-align: center;
  padding: var(--space-6) var(--space-5) var(--space-4);
}

.auth-card__logo {
  display: block;
  margin: 0 auto var(--space-4);
  height: auto;
}

/* Uppercase tracked eyebrow — extends shared .eyebrow */
.auth-card__eyebrow {
  margin-bottom: var(--space-2);
}

.auth-card__title {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-ink-900);
  margin: 0 0 var(--space-1);
}

.auth-card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  margin: 0;
}

/* Ledger rule — hairline separator (principles §7). Reusable
   in any card or section to separate header-like content from body. */
.card__rule {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: 0 var(--space-5);
}

.auth-card__form {
  padding: var(--space-5);
}

.auth-card__errors {
  padding: var(--space-4) var(--space-5) 0;
}

.auth-card__actions {
  margin-top: var(--space-5);
}

.auth-card__actions .btn {
  width: 100%;
}

.auth-card__footer {
  text-align: center;
  padding: 0 var(--space-5) var(--space-5);
  font-size: var(--font-size-sm);
}

.auth-card__footer a {
  color: var(--color-brand-600);
  text-decoration: none;
}

.auth-card__footer a:hover {
  text-decoration: underline;
}

/* Quick-login dropdown — staging-only developer tool. The section is only
   rendered when ``QUICK_LOGIN_ENABLED=True``, which must never be set in
   production. */
.auth-card__quick-login {
  padding: var(--space-5);
}

.quick-login__label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}

.quick-login__row {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.quick-login__select {
  flex: 1;
}

.quick-login__row .btn {
  white-space: nowrap;
}

/* ============================================
   LANDING / INTERIM DASHBOARD (post-login)
   --------------------------------------------
   Throwaway welcome page inside the app shell;
   will be replaced by #77's role-based dashboard.
   Follows the ledger-rule motif (principles §7).
   ============================================ */

.landing {
  max-width: 70ch;
}

.landing__greeting {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-ink-900);
  margin: var(--space-3) 0 var(--space-4);
  line-height: var(--line-height-tight);
}

.landing__context {
  color: var(--color-ink-500);
  margin-top: var(--space-5);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   ADMIN SCREEN UTILITIES
   ============================================ */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

/* Toolbar contract for list screens (Issue #281, F8 of the 2026-07-08
   audit). The filter form sits on the left as a flex cluster; the
   primary action sits flush-right; both share the same vertical
   baseline and gap. Used on /people/employees/, /admin/users/, and
   the enrollments tab. See ``docs/design/components.md`` → Data table. */
.toolbar--list {
  margin-bottom: var(--space-5);
  gap: var(--space-3);
}
.toolbar--list > .toolbar__filters {
  flex: 1 1 auto;
  min-width: 0;
}
.toolbar--list > .btn {
  flex: 0 0 auto;
}

.list-filters {
  width: 100%;
  align-items: stretch;
}

.list-filters .field__control {
  width: 100%;
}

@media (max-width: 767px) {
  .toolbar--list {
    align-items: stretch;
  }

  .toolbar--list > .btn {
    width: 100%;
    justify-content: center;
  }

  .toolbar--list > .btn--icon-lg {
    width: calc(var(--control-touch-min) + var(--space-5));
    align-self: flex-end;
  }
}

@media (min-width: 768px) {
  .list-filters {
    width: auto;
    flex-wrap: nowrap;
    align-items: center;
  }

  .list-filters .field__control {
    width: auto;
  }

  .list-filters input[type="search"].field__control {
    min-width: 16rem;
  }
}

.input-search {
  width: 240px;
}

.input-auto {
  width: auto;
}

.form-inline {
  display: inline;
}

.detail-field {
  margin-top: var(--space-1);
  margin-bottom: 0;
}

.form-card {
  max-width: 600px;
}

.detail-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.detail-section__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  margin: var(--space-5) 0 var(--space-3);
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.detail-overview {
  padding: var(--space-4) 0;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
@media (min-width: 768px) {
  .detail-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.detail-grid__item {
  margin: 0;
}
.detail-grid__item .eyebrow {
  margin-bottom: var(--space-1);
}
.detail-grid__item dd {
  margin-top: var(--space-1);
  margin-bottom: 0;
}

/* ============================================
   MASTER–DETAIL CRUD LIST
   ============================================ */

.master-detail {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
}

.master-detail__master,
.master-detail__detail {
  min-width: 0;
}

.master-detail__detail {
  width: 100%;
  max-width: none;
  padding: var(--space-4);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  background: var(--color-surface-card);
}

.master-detail__heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.master-detail__heading h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
}

.key-facts-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  grid-auto-rows: 1fr;
  margin-bottom: var(--space-4);
  overflow: hidden;
  border: var(--border-thin);
  border-radius: var(--radius-lg);
}

.key-facts-strip__item {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-1) var(--space-2);
  min-height: 5rem;
  padding: var(--space-3);
  border-right: var(--border-thin);
  min-width: 0;
}

.key-facts-strip__item:last-child {
  border-right: 0;
}

.key-facts-strip__label {
  color: var(--color-ink-500);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.key-facts-strip__value {
  grid-column: 1 / -1;
  min-width: 0;
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

@media (min-width: 1280px) {
  .page--crud-list .master-detail--selected {
    display: grid;
    grid-template-columns: minmax(0, 45fr) minmax(0, 55fr);
    align-items: start;
  }

  .master-detail--selected > .master-detail__detail {
    width: auto;
    position: sticky;
    top: var(--space-4);
    max-height: 75vh;
    overflow-y: auto;
  }
}

.profile-photo {
  max-width: 150px;
  height: auto;
  border-radius: var(--radius-md);
  border: var(--border-thin);
}

.profile-signature {
  max-width: 250px;
  height: auto;
}

.heading-with-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.muted {
  color: var(--color-ink-500);
}

.page__title {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  margin: 0 0 var(--space-5);
}

.divider {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-5) 0;
}

.tab-panel {
  padding: var(--space-4) 0;
}

.detail-base__main .tab-panel {
  padding-top: 0;
}
.tab-panel[hidden] {
  display: none;
}
.tab-panel {
  animation: tab-fade-in var(--transition-fast) ease;
}
@keyframes tab-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.table-link {
  color: var(--color-brand-600);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}
.table-link:hover {
  text-decoration: underline;
}

/* Form utilities */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Form fieldset group */
.form__group {
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin: 0 0 var(--space-5);
  background: var(--color-surface-card);
}
.form__group--removable {
  position: relative;
  padding-top: var(--space-6);
}
.form__group-remove {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: calc(var(--control-height-sm) - var(--space-1));
  height: calc(var(--control-height-sm) - var(--space-1));
  background: var(--color-surface-elevated);
  border-color: var(--color-border-subtle);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}
.form__group-remove .icon {
  width: calc(var(--icon-size-sm) - var(--space-1));
  height: calc(var(--icon-size-sm) - var(--space-1));
}
@media (max-width: 767px) {
  .form__group { padding: var(--space-4); }
  .form__group--removable { padding-top: var(--space-6); }
}

.form__legend {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-900);
  padding: 0;
  margin-bottom: var(--space-4);
}

/* Form row — responsive two-column layout */
.form__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
@media (min-width: 768px) {
  .form__row {
    grid-template-columns: 1fr 1fr;
  }
}
.form__row .field {
  margin-bottom: 0;
}

.field-with-action {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  align-items: end;
}
.field-with-action .field {
  margin-bottom: 0;
}
.field-with-action .btn {
  justify-self: start;
}
@media (min-width: 768px) {
  .field-with-action {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

/* Form actions — spaced action bar with sticky-bottom on mobile */
.form__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}
@media (max-width: 767px) {
  .form__actions {
    position: sticky;
    bottom: 0;
    background: var(--color-surface-page);
    padding: var(--space-3) var(--space-4);
    margin: var(--space-4) calc(-1 * var(--space-4)) 0;
    border-top: var(--border-thin);
    z-index: 10;
  }
  .form__actions .btn {
    flex: 1;
  }
}

/* File input — normalize browser chrome */
.field input[type="file"].field__control {
  height: auto;
  padding: var(--space-2) 0;
  border: none;
  background: transparent;
  font-size: var(--font-size-sm);
  color: var(--color-ink-700);
}
.field input[type="file"].field__control::file-selector-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--control-height-sm);
  padding: 0 var(--space-3);
  margin-right: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-ink-700);
  background: var(--color-cream-200);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}
.field input[type="file"].field__control::file-selector-button:hover {
  background: var(--color-cream-300);
}

/* Compact field variant */
.field--sm {
  margin-bottom: var(--space-3);
}

.field--sm .field__label {
  font-size: var(--font-size-xs);
}

.field--sm .field__control {
  height: var(--control-height-sm);
  font-size: var(--font-size-sm);
}

/* Toolbar utilities */
.toolbar__actions {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.toolbar__filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.toolbar__filters select.field__control {
  width: auto;
  min-width: 200px;
}

.toolbar__search {
  flex: 1;
  min-width: 200px;
}

.toolbar__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  margin: 0;
}

/* Enrollment panel — card treatment for enrollment sections */
.enrollments-panel {
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-top: var(--space-5);
  background: var(--color-surface-card);
}

/* Nav header utilities */
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Nav header utilities */
.nav-header__name {
  font-size: var(--font-size-lg);
}

.nav-header__user-menu {
  position: relative;
}

/* ==========================================================================
   CBT Exam Player (#79)
   ========================================================================== */

.exam-player {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.exam-timer {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface-card);
  border-bottom: 1px solid var(--color-border-default);
  font-variant-numeric: tabular-nums;
}

.exam-timer__label {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
}

.exam-timer__value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  font-variant-numeric: tabular-nums;
}

.exam-timer__value--warning {
  color: var(--color-status-warning);
}

.exam-timer__value--danger {
  color: var(--color-status-error);
}

.exam-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .exam-layout {
    grid-template-columns: 1fr 200px;
  }
}

.exam-question {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.exam-question__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.exam-question__counter {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
}

.exam-question__points {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
}

.exam-question__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.exam-question__text {
  font-size: var(--font-size-base);
  line-height: 1.6;
}

.option-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
  margin: 0;
}

.option-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.15s;
}

.option-row:hover {
  background: var(--color-surface-hover);
}

.option-text {
  font-size: var(--font-size-base);
}

.answer-input {
  /* native input hidden inside option-row */
}

.exam-navigator {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
}

@media (max-width: 767px) {
  .exam-navigator {
    order: -1;
  }
}

.exam-navigator__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
}

.exam-navigator__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-1);
}

.exam-navigator__stats {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
}

.nav-dot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-default);
  text-decoration: none;
  color: var(--color-ink-900);
  transition: background-color 0.15s;
}

.nav-dot:hover {
  background: var(--color-surface-hover);
}

.nav-dot--current {
  border-color: var(--color-brand-primary);
  background: var(--color-brand-primary);
  color: #fff;
}

.nav-dot--answered {
  background: var(--color-status-success-bg);
}

.exam-actions {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-4);
  border-top: 1px solid var(--color-border-default);
  position: sticky;
  bottom: 0;
  background: var(--color-surface-card);
}

@media (min-width: 768px) {
  .exam-actions {
    position: static;
  }
}

.save-indicator {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  min-height: 1.2em;
}

.save-indicator--saved {
  color: var(--color-status-success);
}

.save-indicator--error {
  color: var(--color-status-error);
}

/* Result screen */
.result {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.result__score {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-6);
}

.result__score-value {
  font-size: 3rem;
  font-weight: var(--font-weight-bold);
  font-variant-numeric: tabular-nums;
}

.card--correct {
  border-left: 4px solid var(--color-status-success);
}

.card--incorrect {
  border-left: 4px solid var(--color-status-error);
}

.btn--small {
  font-size: var(--font-size-sm);
  padding: var(--space-1) var(--space-2);
}

.btn--disabled {
  opacity: 0.5;
  pointer-events: none;
}

.text-muted {
  color: var(--color-ink-500);
}

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

.incorrect {
  color: var(--color-status-error);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.form-field__input {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  font-family: inherit;
}

.form-actions {
  display: flex;
  gap: var(--space-4);
  padding-top: var(--space-4);
}

/* ============================================
   DASHBOARD AND WIDGETS
   ============================================ */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.dashboard-greeting {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-ink-900);
  margin: 0;
}

.dashboard-period {
  padding: var(--space-2) var(--space-4);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  background: var(--color-surface-card);
  color: var(--color-ink-700);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

/* Stat row rules: always grid or flex */
.dashboard-stat-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

@media (min-width: 480px) {
  .dashboard-stat-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dashboard-stat-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .dashboard-stat-row.stats-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Span utility for larger widgets */
@media (min-width: 768px) {
  .span-2 {
    grid-column: span 2;
  }
}

/* Mini table inside widgets */
.widget-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-2);
}

.widget-table th,
.widget-table td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  border-bottom: var(--border-thin);
  font-size: var(--font-size-sm);
}

.widget-table th {
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-700);
  background: var(--color-cream-100);
}

.widget-table td {
  color: var(--color-ink-900);
}

/* Widget error and retry */
.widget-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4);
}

.widget-error__message {
  color: var(--color-status-error);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-3);
}

/* Tabular number styling for statistics */
.stat__value.tnum {
  font-variant-numeric: tabular-nums;
}

/* SVG Chart styling */
.widget-chart {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-4);
}

.widget-chart svg {
  max-width: 100%;
  height: auto;
}

/* UI/UX Utility Classes */
.link {
  color: var(--color-brand-600);
  text-decoration: none;
}
.link:hover {
  text-decoration: underline;
}

.font-mono {
  font-family: var(--font-mono);
}

.text-xs {
  font-size: var(--font-size-xs);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.error-text {
  color: var(--color-status-error);
}

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

.stack--sm {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  /* Flex-column children default to min-width: auto (own min-content size),
     which forces a wide child (e.g. a data table) to grow every ancestor up
     to <html> instead of letting an ancestor's own overflow:auto engage
     locally. min-width: 0 lets this flex chain shrink. See #594. */
  min-width: 0;
}

/* Audit feed (admin dashboard widget — Issue #280 / F14) */
.audit-feed {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.audit-feed__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 var(--space-2);
  padding-block: var(--space-1);
  border-bottom: 1px dashed var(--color-border-subtle);
}

.audit-feed__item:last-child {
  border-bottom: none;
}

.audit-feed__actor {
  font-weight: 600;
}

.audit-feed__verb {
  color: var(--color-ink-500);
}

.audit-feed__target {
  color: var(--color-ink-700);
}

.audit-feed__time {
  margin-inline-start: auto;
  color: var(--color-ink-500);
  font-size: var(--font-size-sm);
}

/* Stat placeholder (partner CBT Pass Rate empty state — Issue #280) */
.stat-placeholder__label {
  margin: 0;
  color: var(--color-ink-500);
}

.stat-placeholder__value {
  margin: var(--space-1) 0 0;
  font: var(--font-display) var(--font-size-2xl) / 1 var(--font-display);
  font-variant-numeric: tabular-nums;
}

.stat-placeholder__hint {
  margin: var(--space-1) 0 0;
}

/* Audit practice — workspace shell (Issue #373, DR-2 §2). */

.phase-rail {
  display: block;
  margin-bottom: var(--space-4);
}

.phase-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  list-style: none;
}

.phase-rail__item {
  flex: 1 1 0;
  min-width: 8rem;
}

.phase-rail__step {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-ink-200);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-ink-700);
  font-weight: 500;
}

.phase-rail__step--past {
  background: var(--color-status-success-tint, var(--color-surface));
  border-color: var(--color-status-success, var(--color-ink-200));
  color: var(--color-ink-900);
}

.phase-rail__step--current {
  border-color: var(--color-status-info, var(--color-brand-600));
  border-width: 2px;
  font-weight: 600;
}

.phase-rail__step--future {
  color: var(--color-ink-500);
  background: transparent;
}

.phase-rail__marker {
  display: inline-block;
  min-width: 4.5rem;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-sm);
  background: var(--color-ink-100);
  color: var(--color-ink-700);
}

.phase-rail__step--past .phase-rail__marker {
  background: var(--color-status-success-tint, var(--color-ink-100));
  color: var(--color-status-success, var(--color-ink-700));
}

.phase-rail__step--current .phase-rail__marker {
  background: var(--color-status-info-tint, var(--color-ink-100));
  color: var(--color-status-info, var(--color-brand-600));
}

/* Workspace layout — sections on the left, gate panel on the right ≥lg. */
.workspace-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 1024px) {
  .workspace-grid {
    grid-template-columns: 2fr 1fr;
  }
}

/* Gate list — rows of chip + label used in the gate panel and the dashboard. */
.gate-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  list-style: none;
}

.gate-list__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-ink-100);
}

.gate-list__row:last-child {
  border-bottom: 0;
}

/* Inline detail grid for the engagement header (no key/value stacking on lg). */
.detail-grid--inline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  margin: 0;
}

.detail-grid--inline .detail-grid__item {
  display: flex;
  flex-direction: row;
  align-items: baseline;
  gap: var(--space-2);
}

.detail-grid--inline dt {
  font-weight: 500;
  color: var(--color-ink-500);
}

.detail-grid--inline dd {
  margin: 0;
}

/* ============================================
   PROGRESS BAR (Issue #665, docs/design/components.md)
   ============================================ */

.progress-bar {
  display: block;
  width: 100%;
  background-color: var(--color-cream-300);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar--sm {
  height: var(--space-1);
}

.progress-bar--md {
  height: var(--space-2);
}

.progress-bar__track {
  width: 100%;
  height: 100%;
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  display: block;
  height: 100%;
  border-radius: var(--radius-full);
  background-color: var(--color-brand-600);
  transition: width var(--transition-fast);
}

.progress-bar--teal .progress-bar__fill {
  background-color: var(--color-data-teal);
}

/* ============================================
   AUDIO PLAYER (Issue #665, docs/design/components.md)
   ============================================ */

.audio-player {
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.audio-player__progress {
  margin-bottom: var(--space-3);
}

.audio-player__main {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.audio-player__now-playing {
  flex: 1 1 12rem;
  min-width: 0;
}

.audio-player__chapter {
  display: block;
  margin-bottom: var(--space-1);
}

.audio-player__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-900);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.audio-player__provenance {
  font-size: var(--font-size-xs);
  color: var(--color-ink-500);
  margin: var(--space-1) 0 0;
}

.audio-player__timing {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-ink-700);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.audio-player__time-current,
.audio-player__time-total {
  font-variant-numeric: tabular-nums;
}

.audio-player__time-separator {
  color: var(--color-ink-300);
}

.audio-player__transport {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.audio-player__btn {
  width: var(--control-touch-min);
  height: var(--control-touch-min);
  min-width: var(--control-touch-min);
  min-height: var(--control-touch-min);
  padding: 0;
  border-radius: var(--radius-full);
}

.audio-player__btn--prev,
.audio-player__btn--next {
  background: var(--color-surface-card);
  color: var(--color-ink-700);
  border: var(--border-thin);
}

.audio-player__btn--play {
  background: var(--color-brand-600);
  color: #fff;
  border-color: var(--color-brand-600);
}

.audio-player__btn--play:hover:not(:disabled) {
  background: var(--color-brand-500);
}

.audio-player__icon {
  width: var(--icon-size-md);
  height: var(--icon-size-md);
}

.audio-player__btn--play .audio-player__icon {
  width: var(--icon-size-lg);
  height: var(--icon-size-lg);
}

.audio-player__controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.audio-player__native {
  width: 100%;
  min-height: var(--control-touch-min);
  accent-color: var(--color-brand-600);
}

.audio-player__speed {
  font-weight: var(--font-weight-semibold);
}

/* Compact sticky variant */
.audio-player--compact {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border-bottom: none;
  box-shadow: var(--shadow-md);
  padding: var(--space-3) var(--space-4);
}

.audio-player--compact .audio-player__title {
  font-size: var(--font-size-base);
}

/* ============================================
   STUDY HUB SURFACES (Issue #665, docs/design/study-hub.md)
   ============================================ */

/* Key facts strip */
.study-hub-key-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-subtle);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  min-width: 0;
  max-width: 100%;
}

@media (max-width: 480px) {
  .study-hub-key-facts {
    grid-template-columns: 1fr;
  }
}

.study-hub-key-facts__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.study-hub-key-facts__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--control-height-sm);
  height: var(--control-height-sm);
  border-radius: var(--radius-md);
  background: var(--color-surface-card);
  color: var(--color-brand-600);
  flex-shrink: 0;
}

.study-hub-key-facts__label {
  font-size: var(--font-size-xs);
  color: var(--color-ink-500);
  margin-bottom: 2px;
}

.study-hub-key-facts__value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-900);
  font-variant-numeric: tabular-nums;
}

/* Audio Episode List */
.audio-episode-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
  min-width: 0;
}

.audio-episode-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  min-height: var(--control-touch-min);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-ink-900);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
  min-width: 0;
}

.audio-episode-row:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-brand-300);
}

.audio-episode-row--playing {
  border-color: var(--color-brand-600);
  background: var(--color-brand-50);
}

.audio-episode-row__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  flex: 1 1 10rem;
}

.audio-episode-row__number {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-500);
  min-width: 4.5rem;
  flex-shrink: 0;
}

.audio-episode-row__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.audio-episode-row__status {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.audio-episode-row__duration {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  font-variant-numeric: tabular-nums;
}

.audio-episode-row__action {
  display: inline-flex;
  align-items: center;
}

/* Study Hub Layout */
.study-hub-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 1024px) {
  .study-hub-layout {
    grid-template-columns: 2fr 1fr;
  }
}

.study-hub-main {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.study-hub-rail {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Practice Card */
.practice-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
}

.practice-card__content {
  flex: 1 1 12rem;
}

.practice-card__title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin: 0 0 var(--space-1);
}

.practice-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  margin: 0;
}

.practice-card__action {
  flex-shrink: 0;
}

/* Study Resource List */
.study-resource-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.study-resource-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

.study-resource-item:last-child {
  border-bottom: none;
}

.study-resource-item__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.study-resource-item__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-ink-900);
}

.study-resource-item__meta {
  font-size: var(--font-size-xs);
  color: var(--color-ink-500);
}

.study-resource-item__status {
  flex-shrink: 0;
}

/* Syllabus Assistant */
.assistant-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.assistant-transcript {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-surface-subtle);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  min-height: 16rem;
}

.assistant-message {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  max-width: 90%;
}

.assistant-message--user {
  align-self: flex-end;
  background: var(--color-brand-600);
  color: #fff;
}

.assistant-message--user .assistant-message__author {
  color: var(--color-brand-100);
}

.assistant-message--user .assistant-message__time {
  color: var(--color-brand-200);
}

.assistant-message--assistant {
  align-self: flex-start;
  background: var(--color-surface-card);
  border: var(--border-thin);
  color: var(--color-ink-900);
}

.assistant-message--thinking {
  align-self: flex-start;
  background: var(--color-surface-subtle);
  border: 1px dashed var(--color-border-strong);
  color: var(--color-ink-500);
  font-style: italic;
}

.assistant-message__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
}

.assistant-message__author {
  font-weight: var(--font-weight-semibold);
}

.assistant-message__time {
  color: var(--color-ink-500);
  font-variant-numeric: tabular-nums;
}

.assistant-message__body {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.assistant-message__citations {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border-subtle);
}

.assistant-message__citation-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-500);
}

.assistant-message__citation-list {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-2);
  width: 100%;
}

.assistant-citation {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 100%;
}

.assistant-citation[open] {
  width: 100%;
}

.assistant-citation__summary {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
  list-style: none;
}

.assistant-citation__summary::-webkit-details-marker {
  display: none;
}

.assistant-citation__summary:focus-visible {
  outline: 2px solid var(--color-brand-600);
  outline-offset: 2px;
  border-radius: var(--radius-full);
}

.assistant-citation__excerpt {
  margin: var(--space-2) 0 0;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-subtle);
  border-left: 3px solid var(--color-brand-500);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-style: italic;
  color: var(--color-ink-700);
  line-height: var(--line-height-normal);
  width: 100%;
  box-sizing: border-box;
}

.assistant-message__attribution {
  font-size: var(--font-size-xs);
  color: var(--color-ink-500);
  margin-top: var(--space-1);
  font-variant-numeric: tabular-nums;
}

.assistant-composer {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
}

.assistant-composer__field {
  width: 100%;
}

.assistant-composer__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* Sync status & Catalogue helpers */
.sync-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: var(--space-4);
}

.catalogue-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.catalogue-comparison {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Prototype section & screen switcher */
.prototype-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-5);
}

.prototype-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.prototype-nav__item {
  display: inline-flex;
}

.prototype-nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-ink-700);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.prototype-nav__link:hover {
  background: var(--color-surface-hover);
  color: var(--color-brand-600);
}

.prototype-nav__link--active {
  background: var(--color-brand-50);
  color: var(--color-brand-600);
  font-weight: var(--font-weight-semibold);
}

.prototype-section {
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-border-default);
  margin-top: var(--space-8);
}

.prototype-section:first-of-type {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.prototype-section__header {
  margin-bottom: var(--space-4);
}

.prototype-section__title {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  color: var(--color-ink-900);
  margin: 0 0 var(--space-1);
}

.prototype-section__desc {
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
  margin: 0;
}

.prototype-section__content {
  margin-top: var(--space-4);
}

.catalogue-table,
.sync-health-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
}

.catalogue-table thead,
.sync-health-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 2px solid var(--color-border-default);
  background: var(--color-surface-subtle);
}

.catalogue-table th,
.sync-health-table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-ink-500);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.catalogue-table td,
.sync-health-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-ink-900);
  font-variant-numeric: tabular-nums;
}

.detail-header__identity {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.detail-header__title {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-ink-900);
  margin: 0;
  word-break: break-word;
  overflow-wrap: break-word;
}

.detail-header__chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

/* ============================================
   MINDMAP & GUIDE VIEWER (Issue #667)
   ============================================ */

.mindmap-viewer {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mindmap-canvas {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
  background: var(--color-surface-card);
}

.mindmap-canvas[hidden] {
  display: none;
}

.mindmap-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.mindmap-toolbar__zoom {
  min-width: 3.5rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
  font-size: var(--font-size-sm);
  color: var(--color-ink-500);
}

.mindmap-canvas__surface {
  position: relative;
  min-height: 22rem;
  overflow: hidden;
  border: var(--border-thin);
  border-radius: var(--radius-md);
  background: var(--color-surface-subtle);
  cursor: grab;
  touch-action: none;
}

.mindmap-canvas__surface--dragging {
  cursor: grabbing;
}

.mindmap-canvas__content {
  position: absolute;
  inset: 0;
  transform-origin: top left;
}

.mindmap-canvas__map,
.mindmap-canvas__node {
  position: absolute;
}

.mindmap-canvas__node-toggle {
  min-width: 9rem;
  min-height: var(--control-touch-min);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  background: var(--color-surface-card);
  color: var(--color-ink-900);
  font: inherit;
  text-align: left;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.mindmap-canvas__node-toggle:hover {
  border-color: var(--color-brand-600);
}

.mindmap-canvas__children {
  display: contents;
}

.mindmap-viewer--enhanced .mindmap-tree {
  display: none;
}

.mindmap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .mindmap-grid {
    grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  }
}

.mindmap-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-surface-card);
  border: var(--border-thin);
  border-radius: var(--radius-lg);
}

.mindmap-card__preview {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 8rem;
  background: var(--color-surface-subtle);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  color: var(--color-brand-600);
}

.mindmap-card__title {
  font-family: var(--font-display);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.mindmap-card__meta {
  font-size: var(--font-size-xs);
  color: var(--color-ink-500);
}

/* Mobile nested tree for mindmaps and study resources (<768px) */
.mindmap-tree {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mindmap-tree__node {
  border: var(--border-thin);
  border-radius: var(--radius-md);
  background: var(--color-surface-card);
  overflow: hidden;
}

.mindmap-tree__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3);
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  min-height: var(--control-touch-min);
  user-select: none;
}

.mindmap-tree__summary:hover {
  background: var(--color-surface-hover);
}

.mindmap-tree__content {
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-surface-subtle);
  font-size: var(--font-size-sm);
}

.study-resource-document {
  margin: 0;
  overflow-wrap: anywhere;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-ink-900);
}

.study-resource-document > :first-child {
  margin-top: 0;
}

.study-resource-document > :last-child {
  margin-bottom: 0;
}

.study-hub-tab-panel {
  display: none;
}

.study-hub-tab-panel--active {
  display: block;
}