/* Phase 3 shared component proposals. Foundations remain in qem-foundations.css. */

button {
  cursor: pointer;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: .58;
}

textarea {
  width: 100%;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  padding: .55rem .65rem;
  resize: vertical;
}

input.form-control,
select.form-control,
textarea.form-control,
.input-with-icon input {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: var(--font-size-0);
  line-height: var(--type-body-line, 1.25rem);
  padding: .5rem .65rem;
}

select.form-control {
  padding-right: 2rem;
}

textarea:focus,
.form-control:focus {
  border-color: var(--color-focus);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(47, 111, 237, .14);
}

input[readonly],
textarea[readonly] {
  background: var(--color-surface-subtle);
  color: var(--color-text-muted);
}

.component-grid,
.feedback-grid,
.navigation-grid,
.overlay-grid,
.result-grid,
.table-state-grid,
.form-layout-demo,
.card-showcase {
  display: grid;
  gap: var(--space-4);
}

.component-grid,
.form-layout-demo,
.navigation-grid,
.overlay-grid,
.table-state-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feedback-grid,
.result-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card-showcase {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.component-panel,
.card,
.panel,
.result-state,
.overlay-demo {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface);
}

.component-panel,
.card,
.panel,
.result-state {
  padding: var(--space-5);
}

.component-panel h3,
.card h3,
.panel h3,
.result-state h3 {
  margin-bottom: var(--space-2);
}

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

.panel-head h3,
.panel-head p {
  margin: 0;
}

.example-row,
.state-strip,
.status-matrix,
.toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.btn-sm {
  min-height: 32px;
  padding: .38rem .6rem;
  font-size: var(--font-size-00);
  line-height: var(--type-body-sm-line, 1rem);
}

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

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

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

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

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

.btn-outline:hover,
.btn-outline.is-hover {
  background: var(--color-accent-soft);
}

.btn-lg {
  min-height: 48px;
  padding: .72rem 1rem;
  font-size: var(--font-size-1);
  line-height: var(--type-body-lg-line, 1.5rem);
}

.btn-icon {
  width: 40px;
  padding-inline: 0;
}

.btn-icon.btn-sm {
  width: 32px;
}

.btn-subtle {
  border-color: transparent;
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.btn-subtle:hover,
.btn-subtle.is-hover {
  border-color: var(--color-border);
  background: var(--color-surface-subtle);
}

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

.btn-danger:hover,
.btn-danger.is-hover {
  border-color: #842838;
  background: #842838;
  color: #fff;
}

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

.btn-danger-outline:hover,
.btn-danger-outline.is-hover {
  background: var(--color-danger-soft);
}

.btn-link {
  min-height: auto;
  border-color: transparent;
  background: transparent;
  color: var(--color-accent);
  padding-inline: 0;
  text-decoration: underline;
  text-underline-offset: .18em;
}

.btn-link:hover,
.btn-link.is-hover {
  color: var(--color-accent-hover);
}

.btn-primary.is-hover {
  border-color: var(--color-accent-hover);
  background: var(--color-accent-hover);
}

.btn-primary.is-focus,
.btn-secondary.is-focus,
.btn-danger-outline.is-focus {
  box-shadow: 0 0 0 3px rgba(47, 111, 237, .18);
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.btn-primary.is-active,
.btn-secondary.is-active {
  transform: translateY(1px);
}

.btn-secondary.is-selected {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.btn-plain-icon,
.action-icon {
  display: inline-grid;
  place-items: center;
  width: 36px;
  min-height: 36px;
  border: 1px solid transparent;
  border-radius: var(--radius-4);
  background: transparent;
  color: var(--color-text-muted);
  padding: 0;
}

.btn-plain-icon:hover,
.action-icon:hover,
.action-icon.is-hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.action-icon:focus-visible,
.action-icon.is-focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.dark-surface {
  background: var(--color-primary);
  color: #fff;
}

.dark-surface h3,
.dark-surface code {
  color: #fff;
}

.dark-surface code {
  border-color: rgba(255, 255, 255, .24);
  background: rgba(255, 255, 255, .08);
}

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

.btn-outline-on-dark {
  border-color: rgba(255, 255, 255, .5);
  background: transparent;
  color: #fff;
}

.btn-subtle-on-dark {
  border-color: transparent;
  background: rgba(255, 255, 255, .1);
  color: #fff;
}

.btn-link-on-dark {
  min-height: auto;
  border-color: transparent;
  background: transparent;
  color: #fff;
  padding-inline: 0;
  text-decoration: underline;
  text-underline-offset: .18em;
}

.button-group {
  display: inline-flex;
}

.button-group .btn {
  border-radius: 0;
  margin-left: -1px;
}

.button-group .btn:first-child {
  margin-left: 0;
  border-radius: var(--radius-4) 0 0 var(--radius-4);
}

.button-group .btn:last-child {
  border-radius: 0 var(--radius-4) var(--radius-4) 0;
}

.spinner {
  width: 1em;
  height: 1em;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: spin .7s linear infinite;
}

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

.form-stack {
  display: grid;
  gap: var(--space-4);
}

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

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

.field {
  display: grid;
  align-content: start;
  gap: var(--space-2);
  min-width: 0;
}

.field label {
  line-height: 1.25;
}

.field-help,
.field-error,
.field-success,
.field-warning {
  margin: 0;
  font-size: var(--font-size-00);
}

.field-help {
  color: var(--color-text-muted);
}

.field-error {
  color: var(--color-danger);
}

.field-success {
  color: var(--color-success);
}

.field-warning {
  color: var(--color-warning);
}

.has-error .form-control {
  border-color: var(--color-danger);
}

.has-success .form-control {
  border-color: var(--color-success);
}

.has-warning .form-control {
  border-color: var(--color-warning);
}

.input-group {
  display: flex;
  align-items: stretch;
  min-height: 40px;
}

.input-group .form-control {
  min-width: 0;
  height: auto;
  border-radius: 0 var(--radius-4) var(--radius-4) 0;
}

.input-group .form-control:first-child {
  border-radius: var(--radius-4) 0 0 var(--radius-4);
}

.input-group .btn,
.input-affix {
  border-radius: 0;
  margin-left: -1px;
}

.input-group .btn:last-child {
  border-radius: 0 var(--radius-4) var(--radius-4) 0;
}

.input-affix {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface-subtle);
  color: var(--color-text-muted);
  padding-inline: var(--space-3);
  font-size: var(--font-size-0);
}

.input-group .input-affix:first-child {
  border-radius: var(--radius-4) 0 0 var(--radius-4);
}

.control-list {
  display: grid;
  gap: var(--space-2);
}

.check-control,
.switch-control {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text);
  font-weight: var(--weight-regular);
}

.check-control input {
  width: auto;
  min-height: auto;
}

.switch-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 24px;
  border: 1px solid var(--color-border-strong);
  border-radius: 999px;
  background: var(--color-surface-muted);
  transition: background-color .16s ease, border-color .16s ease, box-shadow .16s ease;
}

.switch::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: transform .16s ease;
}

.switch-control input:checked + .switch {
  border-color: var(--color-accent);
  background: var(--color-accent);
}

.switch-control input:checked + .switch::after {
  transform: translateX(18px);
}

.switch-control input:focus-visible + .switch,
.switch-control.is-focus .switch {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(47, 111, 237, .14);
}

.switch-control:has(input:disabled) {
  color: var(--color-text-subtle);
  cursor: not-allowed;
}

.switch-control input:disabled + .switch {
  opacity: .55;
}

.switch-grid,
.upload-grid {
  display: grid;
  gap: var(--space-3);
}

.form-review-grid {
  margin-top: var(--space-4);
}

.validation-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.upload-card {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: var(--space-3);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-4);
  background: var(--color-surface-subtle);
  color: var(--color-text);
  padding: var(--space-4);
}

.upload-card input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-card small,
.upload-card strong {
  display: block;
}

.upload-card small {
  color: var(--color-text-muted);
  font-size: var(--font-size-00);
  font-weight: var(--weight-regular);
}

.upload-icon,
.upload-preview {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  color: var(--color-accent);
}

.upload-card.has-file {
  grid-template-columns: auto minmax(0, 1fr) auto;
  border-style: solid;
  background: var(--color-surface);
}

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

.upload-card.is-disabled {
  opacity: .58;
}

.upload-card.is-disabled input[type="file"] {
  cursor: not-allowed;
}

.density-compact {
  font-size: var(--font-size-0);
}

.density-compact .form-control,
.density-compact input,
.density-compact select,
.density-compact .btn {
  min-height: 36px;
}

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

.metric-card {
  display: grid;
  gap: var(--space-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  padding: var(--space-5);
}

.metric-card strong {
  font-size: var(--font-size-5);
  font-weight: var(--weight-medium);
  line-height: var(--line-tight);
}

.metric-support {
  color: var(--color-text-muted);
  font-size: var(--font-size-00);
}

.metric-comparison {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--font-size-00);
}

.progress {
  display: block;
  height: 6px;
  overflow: hidden;
  border-radius: var(--radius-4);
  background: var(--color-surface-muted);
}

.progress span {
  display: block;
  height: 100%;
  background: var(--color-accent);
}

.compact-card {
  padding: var(--space-4);
}

.trend {
  font-size: var(--font-size-0);
  font-weight: var(--weight-medium);
}

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

.trend-down {
  color: var(--color-danger);
}

.product-card {
  display: grid;
  gap: 0;
  padding: 0;
  overflow: hidden;
}

.product-thumb {
  min-height: 132px;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-muted);
  color: var(--color-text-subtle);
  font-size: var(--font-size-0);
}

.product-card-body {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
}

.product-card-body h3,
.product-card-body p {
  margin: 0;
}

.structured-card {
  display: grid;
  gap: var(--space-4);
}

.structured-card header,
.structured-card footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.structured-card header {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-3);
}

.structured-card footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}

.structured-card h3,
.structured-card p {
  margin: 0;
}

.data-card dl {
  display: grid;
  gap: var(--space-2);
  margin: 0 0 var(--space-4);
}

.data-card dl div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
}

.data-card dt {
  color: var(--color-text-muted);
}

.data-card dd {
  margin: 0;
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

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

.alert {
  display: flex;
  gap: var(--space-3);
  border: 1px solid currentColor;
  border-radius: var(--radius-4);
  padding: var(--space-4);
}

.alert strong {
  display: block;
  margin-bottom: var(--space-1);
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

.alert p {
  margin: 0;
  font-size: var(--font-size-0);
}

.alert-info {
  background: var(--color-info-soft);
  color: var(--color-info);
}

.alert-success {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.alert-warning {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.alert-danger {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.status-label {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  padding: 0 var(--space-2);
  font-size: var(--font-size-00);
  font-weight: var(--weight-medium);
  line-height: 1;
}

.badge-accent {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.status-paid,
.status-shipped {
  border-color: color-mix(in srgb, var(--color-success), white 40%);
  background: var(--color-success-soft);
  color: var(--color-success);
}

.status-pending {
  border-color: color-mix(in srgb, var(--color-warning), white 40%);
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.status-canceled {
  border-color: color-mix(in srgb, var(--color-danger), white 40%);
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.text-status {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  font-size: var(--font-size-0);
  font-weight: var(--weight-medium);
}

.status-text-active,
.status-text-paid,
.status-text-stock {
  color: var(--color-success);
}

.status-text-warning,
.status-text-pending,
.status-text-refunded {
  color: var(--color-warning);
}

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

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

.table-search {
  flex: 1 1 260px;
  max-width: 420px;
}

.table {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
}

.table th,
.table td {
  background: var(--color-surface);
  padding: var(--space-3);
  vertical-align: top;
}

.table th {
  background: var(--color-surface-subtle);
}

.table tr.is-selected td {
  background: var(--color-accent-soft);
}

.table input[type="checkbox"] {
  width: auto;
  min-height: auto;
}

.table-dense th,
.table-dense td {
  padding: var(--space-2) var(--space-3);
}

.table-sort {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: var(--weight-medium);
  padding: 0;
}

.table-control {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: var(--space-1);
  border: 1px solid transparent;
  border-radius: var(--radius-4);
  background: transparent;
  color: var(--color-text-muted);
  font: inherit;
  font-size: var(--font-size-0);
  font-weight: var(--weight-medium);
  padding: var(--space-2);
}

.table-control:hover,
.table-sort:hover {
  color: var(--color-accent);
}

.table-control:focus-visible,
.table-sort:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.cell-stack {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.cell-stack strong {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

.cell-stack small {
  color: var(--color-text-muted);
  font-size: var(--font-size-00);
  line-height: 1.35;
}

.align-end {
  justify-items: end;
}

.qem-auth-shell,
.qem-auth-shell__body {
  min-height: 100%;
}

.qem-auth-shell__body {
  overflow-x: hidden;
}

.qem-auth-page {
  min-height: 100vh;
  display: grid;
  align-items: center;
  justify-items: start;
  width: min(100% - 32px, 36rem);
  margin-inline: auto;
  padding: var(--space-10) 0 max(9rem, var(--space-16));
}

.qem-auth-card {
  width: min(calc(100vw - 32px), 36rem);
  display: grid;
  gap: var(--space-4);
  justify-self: start;
  margin-left: 0;
  margin-right: auto;
  text-align: center;
}

.qem-auth-card.panel {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.qem-auth-logo-link {
  display: inline-flex;
  justify-self: center;
}

.qem-auth-logo {
  display: block;
  width: auto;
  max-width: min(11rem, 70vw);
  max-height: 4rem;
  object-fit: contain;
}

.qem-auth-title {
  margin: 0;
  font-size: var(--font-size-5);
  line-height: var(--line-heading);
}

.qem-auth-eyebrow {
  margin: 0 0 calc(var(--space-3) * -1);
  color: var(--color-text-muted);
  font-size: var(--font-size-0);
  font-weight: 600;
  line-height: var(--line-body);
}

.qem-auth-form {
  display: grid;
  gap: var(--space-3);
  width: 100%;
}

.qem-auth-field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  width: 100%;
}

.qem-auth-field--password {
  margin-top: var(--space-1);
}

.qem-auth-field-row .qem-auth-field--password {
  margin-top: 0;
}

.qem-auth-field-status {
  min-height: 1rem;
  margin: var(--space-1) 0 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-00);
  line-height: var(--line-body);
  text-align: left;
}

.qem-auth-field-status.is-success {
  color: var(--color-success);
}

.qem-auth-field-status.is-error {
  color: var(--color-danger);
}

.qem-auth-field-error {
  display: none;
  margin: 0;
  color: var(--color-danger);
  font-size: var(--font-size-00);
  line-height: var(--line-body);
  text-align: left;
}

.qem-auth-field-error:not(:empty) {
  display: block;
}

.qem-auth-field.has-error .form-control {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-danger) 24%, transparent);
}

.qem-auth-checkbox-row.has-error .qem-auth-checkbox {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-danger) 24%, transparent);
}

.qem-auth-action {
  width: 100%;
  margin-top: var(--space-1);
}

.qem-auth-link-row,
.qem-auth-link-stack {
  display: grid;
  gap: var(--space-2);
  justify-items: center;
  text-align: center;
}

.qem-auth-link {
  color: var(--color-accent);
  font-size: var(--font-size-0);
  font-weight: var(--weight-medium);
  text-decoration: none;
}

.qem-auth-link:hover,
.qem-auth-link:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-underline-offset: .18em;
}

.qem-auth-text {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-0);
  line-height: var(--line-body);
}

.qem-auth-alert {
  text-align: left;
}

.qem-auth-alert ul {
  margin: 0;
  padding-left: var(--space-5);
}

.qem-auth-checkbox-row {
  text-align: left;
}

.qem-auth-checkbox-label {
  align-items: flex-start;
  line-height: var(--line-body);
}

.qem-auth-checkbox-label span {
  min-width: 0;
}

.qem-auth-checkbox {
  flex: 0 0 auto;
  margin-top: .2rem;
}

.qem-auth-form .g-recaptcha {
  margin-top: var(--space-2);
}

.qem-auth-footer {
  margin: var(--space-4) 0 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-0);
  line-height: var(--line-body);
  text-align: center;
}

.qem-result-page {
  width: min(100% - 32px, var(--container-lg));
  margin-inline: auto;
  padding: var(--space-10) 0;
}

.qem-token-page {
  width: min(100% - 32px, var(--container-lg));
  margin-inline: auto;
  padding: var(--space-10) 0 max(10rem, var(--space-16));
}

.qem-token-state {
  min-height: 0;
}

.qem-token-alert {
  text-align: left;
}

.qem-token-alert ul {
  margin: 0;
  padding-left: var(--space-5);
}

.qem-token-caption {
  color: var(--color-text-muted);
  font-size: var(--font-size-0);
}

.qem-token-actions {
  display: flex;
  justify-content: center;
}

.empty-table,
.result-state {
  display: grid;
  place-items: center;
  text-align: center;
}

.result-state {
  width: min(100%, 40rem);
  max-width: calc(100vw - 32px);
  min-height: auto;
  margin-inline: auto;
  padding: var(--space-5);
}

.result-state h1 {
  margin-bottom: var(--space-2);
  font-size: var(--font-size-5);
}

.result-state p {
  margin-inline: auto;
  margin-bottom: var(--space-4);
}

.result-state .result-copy {
  width: min(100%, 30rem);
  max-width: calc(100vw - 96px);
}

.result-state .btn,
.result-state .qem-button {
  margin-top: var(--space-1);
}

.result-state > .result-content {
  width: min(100%, 30rem);
  max-width: calc(100vw - 80px);
}

.empty-icon {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface-subtle);
  color: var(--color-text-muted);
}

.empty-icon.success {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.empty-icon.danger {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.skeleton-table {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
}

.skeleton-table span {
  height: 32px;
  border-radius: var(--radius-3);
  background: linear-gradient(90deg, var(--color-surface-muted), var(--color-surface-subtle), var(--color-surface-muted));
  background-size: 200% 100%;
  animation: skeleton 1.4s ease-in-out infinite;
}

@keyframes skeleton {
  to { background-position: -200% 0; }
}

.breadcrumbs,
.top-nav,
.pagination,
.tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumbs {
  margin-bottom: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--font-size-0);
  gap: var(--space-1);
}

.breadcrumbs a,
.top-nav a,
.dropdown-menu a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--color-accent);
}

.breadcrumbs span[aria-current="page"] {
  color: var(--color-text);
  font-weight: var(--weight-medium);
}

.breadcrumbs .icon {
  color: var(--color-text-subtle);
}

.top-nav a,
.dropdown summary,
.tab,
.pagination a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-4);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-0);
  font-weight: var(--weight-medium);
  text-decoration: none;
}

.top-nav a:hover,
.top-nav a.is-current {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.pagination a:hover,
.pagination a.is-current {
  color: var(--color-accent);
}

.tabs {
  align-items: flex-end;
  gap: var(--space-5);
  overflow-x: auto;
  border-bottom: 1px solid var(--color-border);
}

.tab {
  position: relative;
  min-height: 40px;
  flex: 0 0 auto;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
}

.tab::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: transparent;
}

.tab:hover,
.tab.is-hover {
  color: var(--color-text);
}

.tab.is-selected {
  color: var(--color-accent);
}

.tab.is-selected::after {
  background: var(--color-accent);
}

.tab:focus-visible,
.tab.is-focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.tab:disabled {
  color: var(--color-text-subtle);
  cursor: not-allowed;
  opacity: .55;
}

[data-qem-tabs] [role="tabpanel"][hidden] {
  display: none !important;
}

.dropdown {
  position: relative;
}

.dropdown summary {
  cursor: pointer;
  list-style: none;
  color: var(--color-text-muted);
}

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

.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + var(--space-2));
  z-index: 2;
  min-width: 180px;
  display: grid;
  gap: var(--space-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  padding: var(--space-2);
}

.dropdown-menu a {
  border-radius: var(--radius-3);
  padding: var(--space-2) var(--space-3);
}

.dropdown-menu a:hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.management-shell {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  padding: 0;
  overflow: hidden;
}

.side-nav {
  display: grid;
  align-content: start;
  gap: var(--space-1);
  border-right: 1px solid var(--color-border);
  background: var(--color-surface-subtle);
  padding: var(--space-3);
}

.side-nav a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border-radius: var(--radius-4);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-0);
  font-weight: var(--weight-medium);
  text-decoration: none;
}

.side-nav a:hover,
.side-nav a.is-current {
  background: var(--color-surface);
  color: var(--color-accent);
}

.management-canvas {
  padding: var(--space-5);
}

.mega-menu {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface-subtle);
  padding: var(--space-5);
}

.mega-menu h4 {
  margin: 0 0 var(--space-2);
  font-size: var(--font-size-0);
  font-weight: var(--weight-medium);
}

.mega-menu a {
  display: block;
  color: var(--color-text-muted);
  padding: var(--space-1) 0;
  font-size: var(--font-size-0);
  text-decoration: none;
}

.mega-menu a:hover {
  color: var(--color-accent);
}

.mega-feature {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  padding: var(--space-4);
}

.mega-feature p {
  margin-bottom: 0;
  font-size: var(--font-size-0);
}

.pagination a {
  min-width: 36px;
  justify-content: center;
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text-muted);
  padding-inline: var(--space-2);
}

.pagination a:hover,
.pagination a.is-hover {
  background: transparent;
  color: var(--color-accent);
}

.pagination a.is-current {
  background: transparent;
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: .38em;
}

.pagination-contained a {
  border-color: var(--color-border);
  background: var(--color-surface);
}

.pagination-contained a:hover,
.pagination-contained a.is-hover,
.pagination-contained a.is-current {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.pagination-contained a.is-current {
  text-decoration: none;
}

.pagination-ellipsis {
  min-width: 28px;
  display: inline-flex;
  justify-content: center;
  color: var(--color-text-subtle);
  font-size: var(--font-size-0);
}

.pagination-stack {
  display: grid;
  gap: var(--space-4);
}

.pagination-text a {
  min-width: 0;
  border-color: transparent;
  background: transparent;
  padding-inline: 0;
}

.pagination-compact a {
  width: 36px;
  padding-inline: 0;
}

.pagination a.is-disabled {
  color: var(--color-text-subtle);
  pointer-events: none;
  opacity: .55;
}

.pagination a.is-focus {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.mobile-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface-subtle);
  padding: var(--space-3);
}

.overlay-demo {
  min-height: 260px;
  display: grid;
  place-items: center;
  background: var(--color-surface-muted);
  padding: var(--space-5);
}

.modal-surface,
.drawer-surface,
.popover {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.modal-surface {
  width: min(100%, 440px);
  padding: var(--space-5);
}

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

.danger-modal {
  background: var(--color-danger-soft);
}

.drawer-demo {
  position: relative;
  min-height: 260px;
  padding: 0;
  overflow: hidden;
}

.drawer-surface {
  width: min(320px, 100%);
  height: 100%;
  display: grid;
  align-content: start;
  gap: var(--space-3);
  padding: var(--space-5);
}

.popover-demo {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-6);
}

.popover {
  position: absolute;
  left: 0;
  top: calc(100% + var(--space-2));
  width: 260px;
  padding: var(--space-4);
}

.popover p {
  margin: var(--space-1) 0 0;
  font-size: var(--font-size-0);
}

.tooltip-demo {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0;
}

.tooltip {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-4);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-00);
}

.component-stress {
  margin-top: var(--space-6);
}

@media (max-width: 1100px) {
  .feedback-grid,
  .result-grid,
  .card-showcase,
  .mega-menu {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .component-grid,
  .form-layout-demo,
  .navigation-grid,
  .overlay-grid,
  .table-state-grid {
    grid-template-columns: 1fr;
  }

  .management-shell {
    grid-template-columns: 1fr;
  }

  .side-nav {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }
}

@media (max-width: 640px) {
  .two-col,
  .feedback-grid,
  .result-grid,
  .card-showcase,
  .mega-menu {
    grid-template-columns: 1fr;
  }

  .table-toolbar,
  .card-action {
    align-items: stretch;
    flex-direction: column;
  }

  .table-search {
    max-width: none;
  }

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

  .button-group,
  .input-group {
    width: 100%;
  }

  .button-group .btn {
    flex: 1 1 0;
  }

  .btn-icon {
    width: 44px;
  }

  .popover {
    position: static;
    width: auto;
    margin-top: var(--space-3);
  }

  .pagination {
    gap: var(--space-1);
  }

  .pagination a {
    min-width: 34px;
    min-height: 34px;
    padding: var(--space-2);
  }

  .pagination:not(.pagination-compact) a:first-child,
  .pagination:not(.pagination-compact) a:last-child {
    flex-basis: 100%;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .qem-auth-page {
    min-height: auto;
    width: 21rem;
    max-width: calc(100vw - 24px);
    margin-left: max(12px, calc((100vw - 24px - 21rem) / 2));
    margin-right: 0;
    justify-items: start;
    padding: var(--space-6) 0 max(10rem, var(--space-16));
  }

  .qem-auth-card {
    width: 21rem;
    max-width: 100%;
    margin-left: 0;
    margin-right: auto;
    gap: var(--space-3);
    padding: var(--space-4);
  }

  .qem-auth-title {
    font-size: var(--font-size-4);
  }

  .qem-auth-field-row {
    grid-template-columns: 1fr;
  }

  .qem-result-page {
    width: calc(100vw - 32px);
    margin-left: 16px;
    margin-right: 0;
  }

  .qem-token-page {
    width: calc(100vw - 32px);
    margin-left: 16px;
    margin-right: 0;
    padding: var(--space-6) 0 max(11rem, var(--space-16));
  }

  .result-state {
    width: min(100%, 21rem);
    max-width: calc(100vw - 48px);
    margin-left: 0;
    margin-right: auto;
    padding: var(--space-5) var(--space-4);
  }

  .result-state .result-copy,
  .result-state > .result-content {
    width: 18rem;
    max-width: 100%;
  }

  .result-state h1 {
    font-size: var(--font-size-4);
  }

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

  .upload-card.has-file {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .upload-actions {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) and (pointer: fine) {
  .qem-auth-page {
    transform: translateX(-76px);
  }
}