/* ============================================
   MDx OS Component Library
   Reusable UI components using design tokens.
   Zero hardcoded values — everything references
   var(--token-name) from design-tokens.css.
   ============================================ */

/* === Reset & Base === */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-ui);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text-primary);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.card--surface {
  background: var(--color-surface);
}

.card--elevated {
  background: var(--color-surface-elevated);
  box-shadow: var(--shadow-md);
}

.card--interactive {
  cursor: pointer;
  transition: border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.card--interactive:hover {
  border-color: var(--color-primary-muted);
  box-shadow: var(--shadow-md);
}

.card--interactive:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.card__title {
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: var(--leading-h2);
  letter-spacing: var(--tracking-h2);
}

.card__subtitle {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-family: var(--font-ui);
  font-size: var(--text-body);
  font-weight: 500;
  line-height: var(--leading-body);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
  text-decoration: none;
  white-space: nowrap;
}

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

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

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-primary);
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn--primary:active:not(:disabled) {
  background: var(--color-primary);
}

.btn--secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn--secondary:hover:not(:disabled) {
  background: var(--color-border);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn--ghost:hover:not(:disabled) {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
}

.btn--destructive {
  background: var(--color-error);
  color: var(--color-text-primary);
}

.btn--destructive:hover:not(:disabled) {
  background: var(--color-error);
  opacity: 0.9;
}

.btn--sm {
  padding: var(--space-2) var(--space-3);
  min-height: 36px;
  font-size: var(--text-caption);
}

.btn--lg {
  padding: var(--space-4) var(--space-6);
  min-height: 52px;
  font-size: var(--text-h3);
}

/* ============================================
   INPUTS
   ============================================ */

.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  min-height: 44px;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-ui);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  transition: border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.input::placeholder {
  color: var(--color-text-tertiary);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.input:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

.input--select {
  cursor: pointer;
  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='%23A1A1AA' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

.input--search {
  padding-left: var(--space-10);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A1A1AA' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.35-4.35'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: var(--space-3) center;
}

.input--toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 28px;
  min-height: auto;
  padding: 0;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: background var(--duration-normal) var(--ease-out);
}

.input--toggle::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: transform var(--duration-normal) var(--ease-out),
              background var(--duration-normal) var(--ease-out);
}

.input--toggle:checked {
  background: var(--color-success);
  border-color: var(--color-success);
}

.input--toggle:checked::before {
  transform: translateX(20px);
  background: var(--color-text-primary);
}

.input--toggle:focus-visible {
  box-shadow: 0 0 0 3px var(--color-primary-muted);
}

textarea.input {
  min-height: 100px;
  resize: vertical;
  line-height: 1.6;
}

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

.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tabs__tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  min-height: 44px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-family: var(--font-ui);
  font-size: var(--text-body);
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  transition: color var(--duration-normal) var(--ease-out);
}

.tabs__tab:hover {
  color: var(--color-text-primary);
}

.tabs__tab[aria-selected="true"],
.tabs__tab.active {
  color: var(--color-primary);
}

.tabs__tab[aria-selected="true"]::after,
.tabs__tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
}

.tabs__tab:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.tabs--underline {
  border-bottom: 1px solid var(--color-border);
}

.tabs__panel {
  padding: var(--space-5) 0;
}

.tabs__panel[hidden] {
  display: none;
}

/* ============================================
   TABLES
   ============================================ */

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.table th,
.table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-surface-elevated);
}

.table th:first-child {
  border-radius: var(--radius-sm) 0 0 0;
}

.table th:last-child {
  border-radius: 0 var(--radius-sm) 0 0;
}

.table td {
  color: var(--color-text-primary);
}

.table tbody tr {
  transition: background var(--duration-fast) var(--ease-out);
}

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

.table--sortable th {
  cursor: pointer;
  user-select: none;
}

.table--sortable th:hover {
  color: var(--color-text-primary);
}

.table--sortable th[aria-sort]::after {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: var(--space-2);
  vertical-align: middle;
}

.table--sortable th[aria-sort="ascending"]::after {
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 5px solid currentColor;
}

.table--sortable th[aria-sort="descending"]::after {
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-caption);
  font-weight: 500;
  line-height: var(--leading-caption);
  white-space: nowrap;
}

.badge--active {
  background: rgba(52, 211, 153, 0.15);
  color: var(--color-success);
}

.badge--warning {
  background: rgba(251, 191, 36, 0.15);
  color: var(--color-warning);
}

.badge--error {
  background: rgba(248, 113, 113, 0.15);
  color: var(--color-error);
}

.badge--info {
  background: var(--color-primary-muted);
  color: var(--color-info);
}

.badge--sm {
  padding: 2px var(--space-1);
  font-size: 11px;
}

/* ============================================
   MODALS
   ============================================ */

.modal__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-slow) var(--ease-out),
              visibility var(--duration-slow) var(--ease-out);
}

.modal__overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal__content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform var(--duration-slow) var(--ease-out);
}

.modal__overlay.active .modal__content {
  transform: scale(1);
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal__title {
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: var(--leading-h2);
}

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: var(--text-h2);
  line-height: 1;
  transition: background var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.modal__close:hover {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
}

.modal__close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.modal__body {
  padding: var(--space-6);
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .modal__overlay {
    align-items: flex-end;
    padding: 0;
  }

  .modal__content {
    max-width: 100%;
    max-height: 95vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  }

  .modal__footer {
    flex-direction: column;
  }

  .modal__footer .btn {
    width: 100%;
  }
}

/* ============================================
   TOASTS
   ============================================ */

.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  pointer-events: none;
}

.toast {
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  min-width: 280px;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  pointer-events: auto;
  animation: toast-slide-in var(--duration-slow) var(--ease-out);
}

.toast.removing {
  animation: toast-slide-out var(--duration-slow) var(--ease-out) forwards;
}

.toast--success {
  border-left: 3px solid var(--color-success);
}

.toast--error {
  border-left: 3px solid var(--color-error);
}

.toast--warning {
  border-left: 3px solid var(--color-warning);
}

.toast--info {
  border-left: 3px solid var(--color-info);
}

.toast__icon {
  font-size: var(--text-h2);
  flex-shrink: 0;
  line-height: 1;
}

.toast--success .toast__icon { color: var(--color-success); }
.toast--error .toast__icon { color: var(--color-error); }
.toast--warning .toast__icon { color: var(--color-warning); }
.toast--info .toast__icon { color: var(--color-info); }

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

.toast__title {
  font-weight: 600;
  font-size: var(--text-body);
  margin-bottom: 2px;
}

.toast__message {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
}

@keyframes toast-slide-in {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes toast-slide-out {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

@media (max-width: 768px) {
  .toast-container {
    top: auto;
    bottom: var(--space-4);
    right: var(--space-3);
    left: var(--space-3);
  }

  .toast {
    min-width: auto;
    max-width: 100%;
  }
}

/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--color-text-secondary);
}

.empty-state__icon {
  font-size: var(--text-display);
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state__title {
  font-size: var(--text-h2);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-state__message {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
}

.empty-state__action {
  display: inline-flex;
}

/* ============================================
   SKELETON LOADERS
   ============================================ */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-elevated) 25%,
    var(--color-border) 37%,
    var(--color-surface-elevated) 63%
  );
  background-size: 400% 100%;
  border-radius: var(--radius-sm);
  animation: skeleton-shimmer 1.4s var(--ease-in-out) infinite;
}

.skeleton--text {
  height: var(--space-4);
  width: 100%;
  margin-bottom: var(--space-3);
}

.skeleton--text:last-child {
  width: 60%;
}

.skeleton--card {
  height: 120px;
  width: 100%;
  border-radius: var(--radius-lg);
}

.skeleton--circle {
  width: var(--space-10);
  height: var(--space-10);
  border-radius: var(--radius-full);
}

@keyframes skeleton-shimmer {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0 50%;
  }
}

/* ============================================
   STAT CARDS
   ============================================ */

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
}

.stat-card__value {
  font-size: var(--text-display);
  font-weight: 700;
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
  color: var(--color-text-primary);
}

.stat-card__label {
  font-size: var(--text-body);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

.stat-card__trend {
  font-size: var(--text-caption);
  margin-top: var(--space-2);
}

.stat-card__trend--up {
  color: var(--color-success);
}

.stat-card__trend--down {
  color: var(--color-error);
}

/* ============================================
   NAVIGATION — TOP BAR
   ============================================ */

.nav-top {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0 var(--space-5);
  height: 56px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.nav-top__brand {
  font-size: var(--text-h3);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: var(--tracking-h2);
}

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

.nav-top__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  min-height: 44px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--text-body);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: color var(--duration-normal) var(--ease-out),
              background var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.nav-top__link:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-elevated);
}

.nav-top__link.active {
  color: var(--color-primary);
}

.nav-top__link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav-top__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

/* ============================================
   NAVIGATION — SIDEBAR
   ============================================ */

.nav-sidebar {
  display: flex;
  flex-direction: column;
  width: 240px;
  height: 100%;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  flex-shrink: 0;
}

.nav-sidebar__section {
  padding: var(--space-2) var(--space-3);
}

.nav-sidebar__label {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-sidebar__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  min-height: 44px;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--text-body);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: color var(--duration-normal) var(--ease-out),
              background var(--duration-normal) var(--ease-out);
}

.nav-sidebar__link:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-elevated);
}

.nav-sidebar__link.active {
  color: var(--color-primary);
  background: var(--color-primary-muted);
}

.nav-sidebar__link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.nav-sidebar__icon {
  font-size: var(--text-h3);
  flex-shrink: 0;
  width: var(--space-5);
  text-align: center;
}

.nav-sidebar__divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2) var(--space-3);
}

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

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-caption);
  color: var(--color-text-tertiary);
  padding: var(--space-2) 0;
}

.breadcrumb__item {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.breadcrumb__item:hover {
  color: var(--color-text-primary);
}

.breadcrumb__item.current {
  color: var(--color-text-primary);
  font-weight: 500;
  pointer-events: none;
}

.breadcrumb__item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.breadcrumb__separator {
  color: var(--color-text-tertiary);
  user-select: none;
}

/* ============================================
   SPINNER / LOADING
   ============================================ */

.spinner {
  width: var(--space-8);
  height: var(--space-8);
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

.spinner--sm {
  width: var(--space-5);
  height: var(--space-5);
  border-width: 2px;
}

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

.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-12);
}

/* ============================================
   FORM LAYOUT HELPERS
   ============================================ */

.form-group {
  margin-bottom: var(--space-5);
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-size: var(--text-body);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

/* ============================================
   COMMAND PALETTE (shell — wired in S29)
   ============================================ */

.command-palette__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-fast) var(--ease-out),
              visibility var(--duration-fast) var(--ease-out);
}

.command-palette__overlay.active {
  opacity: 1;
  visibility: visible;
}

.command-palette {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transform: scale(0.98) translateY(-8px);
  transition: transform var(--duration-fast) var(--ease-out);
}

.command-palette__overlay.active .command-palette {
  transform: scale(1) translateY(0);
}

.command-palette__input {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  border: none;
  background: transparent;
  color: var(--color-text-primary);
  font-family: var(--font-ui);
  font-size: var(--text-h3);
  line-height: var(--leading-h3);
}

.command-palette__input::placeholder {
  color: var(--color-text-tertiary);
}

.command-palette__input:focus {
  outline: none;
}

.command-palette__divider {
  height: 1px;
  background: var(--color-border);
}

.command-palette__results {
  max-height: 320px;
  overflow-y: auto;
  padding: var(--space-2);
}

.command-palette__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.command-palette__item:hover,
.command-palette__item.active {
  background: var(--color-surface-elevated);
  color: var(--color-text-primary);
}

.command-palette__item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.command-palette__hint {
  margin-left: auto;
  font-size: var(--text-caption);
  color: var(--color-text-tertiary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.text-mono {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
  line-height: var(--leading-mono);
}

/* ============================================
   REDUCED MOTION
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    transition-duration: 0.01ms;
    scroll-behavior: auto;
  }

  .skeleton {
    animation: none;
    background: var(--color-surface-elevated);
  }
}