.mobile-nav-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.app-shell {
  display: grid;
  min-height: 100vh;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
}

.app-shell__main {
  min-width: 0;
  background: var(--color-main-bg);
}

.app-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-height: var(--topbar-height);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-overlay);
  backdrop-filter: blur(12px);
  padding: 0 var(--space-6);
}

.mobile-nav-button {
  display: none;
}

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

.app-topbar__notification,
.app-topbar__logout {
  position: relative;
  display: inline-grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: border-color var(--motion-base), background-color var(--motion-base), color var(--motion-base), transform var(--motion-fast);
}

.app-topbar__notification:active,
.app-topbar__logout:active {
  transform: translateY(1px);
}

.app-topbar__notification:hover,
.app-topbar__logout:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.app-topbar__notification-badge {
  position: absolute;
  top: -0.2rem;
  right: -0.15rem;
  min-width: 1rem;
  height: 1rem;
  border-radius: var(--radius-pill);
  background: var(--color-danger);
  color: var(--color-on-accent);
  font-size: 0.625rem;
  font-weight: 600;
  line-height: 1rem;
  padding: 0 0.25rem;
  text-align: center;
}

.app-topbar__profile {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.25rem 0.75rem 0.25rem 0.25rem;
  text-decoration: none;
  transition: border-color var(--motion-base), background-color var(--motion-base), color var(--motion-base), transform var(--motion-fast);
}

.app-topbar__profile:active {
  transform: translateY(1px);
}

.app-topbar__profile:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.app-topbar__avatar {
  display: inline-grid;
  width: 1.875rem;
  height: 1.875rem;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.app-topbar__profile-name {
  max-width: 11rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-topbar__logout-form {
  margin: 0;
}

.app-main {
  padding: var(--space-5) var(--space-6) var(--space-8);
}

.app-main__inner {
  display: grid;
  gap: var(--space-4);
  width: min(100%, var(--content-width));
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--color-text-soft);
  font-size: 0.75rem;
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumbs li:not(:last-child)::after {
  color: var(--color-text-soft);
  content: "/";
}

.breadcrumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
}

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

.breadcrumbs [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

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

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

.detail-layout--stacked {
  grid-template-columns: 1fr;
}

.content-stack,
.detail-shell {
  display: grid;
  gap: var(--space-4);
}

.content-stack--wide {
  width: min(100%, 90rem);
}

.detail-workspace {
  width: min(100%, var(--detail-workspace-width));
}

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
}

.page-header h1 {
  margin: 0.125rem 0 0;
  font-size: 1.375rem;
  font-weight: 600;
}

.list-page-header {
  align-items: end;
  gap: var(--space-2);
}

.list-page-header > :first-child {
  display: grid;
  gap: 0.2rem;
}

.list-page-header h1 {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.2;
}

.list-page-header .eyebrow {
  color: var(--color-text-soft);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
}

.page-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: flex-end;
}

.page-toolbar {
  display: grid;
  align-items: end;
  gap: var(--space-3);
  grid-template-columns: minmax(18rem, 1.35fr) minmax(0, 1fr) auto;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
}

.page-toolbar__search,
.page-toolbar__filters,
.page-toolbar__actions {
  min-width: 0;
}

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

.page-toolbar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: flex-end;
  align-items: center;
}

.list-toolbar {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
}

.list-toolbar__search,
.list-toolbar__filters,
.list-toolbar__actions {
  min-width: 0;
}

.list-toolbar__filters,
.task-filter-advanced__grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
}

.list-toolbar__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
}

.list-toolbar__actions--bulk {
  justify-content: space-between;
}

.pipeline-board {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
}

.list-search,
.list-filter {
  display: grid;
  gap: var(--space-1);
}

@media (min-width: 1101px) {
  .list-toolbar {
    align-items: end;
    grid-template-columns: minmax(16rem, 1.15fr) minmax(0, 1.35fr) auto;
    gap: var(--space-2);
  }

  .list-toolbar__filters {
    grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
    gap: var(--space-2);
  }
}

.table-shell {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
}

.table-empty {
  border-top: 1px solid var(--color-border-subtle);
}

.task-filter-actions {
  align-items: flex-start;
}

.task-filter-advanced {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.task-filter-advanced[open] {
  flex-basis: 100%;
  width: 100%;
  margin-top: var(--space-1);
  padding: var(--space-3);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  background: var(--color-surface-subtle);
}

.task-filter-advanced summary {
  display: inline-flex;
  align-items: center;
  min-height: 2.4rem;
  padding: 0 0.7rem;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 500;
}

.task-filter-advanced[open] summary {
  margin-bottom: var(--space-2);
}

.task-filter-advanced summary::-webkit-details-marker {
  display: none;
}

.task-filter-toggle__control {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--control-height);
}

.task-filter-toggle__control input {
  margin: 0;
}

.task-filter-advanced__grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  flex-basis: 100%;
  width: 100%;
}

.quick-filter-bar,
.task-quick-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  padding: var(--space-2) var(--space-4) 0;
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-surface-subtle);
}

.quick-filter-bar span,
.quick-filter-bar a,
.task-quick-filters span,
.task-quick-filters a {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  padding: 0 0.7rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  font-size: 0.75rem;
  line-height: 1.9rem;
  text-decoration: none;
}

.quick-filter-bar span,
.task-quick-filters span {
  color: var(--color-text-soft);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
  border: 0;
  padding-left: 0;
}

.quick-filter-bar a,
.task-quick-filters a {
  border: 1px solid transparent;
  color: var(--color-text-muted);
}

.quick-filter-bar a.is-active,
.quick-filter-bar a:hover,
.task-quick-filters a.is-active,
.task-quick-filters a:hover {
  background: transparent;
  border-color: var(--color-border-subtle) var(--color-border-subtle) var(--color-primary);
  color: var(--color-text);
}

.quick-filter-bar a.is-active,
.task-quick-filters a.is-active {
  border-bottom-width: 2px;
}

.bulk-actions-bar,
.task-bulk-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-primary-soft);
}

.task-bulk-toolbar__controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.task-bulk-toolbar__count {
  font-weight: 500;
}


@media (max-width: 1100px) {
  .page-toolbar {
    grid-template-columns: 1fr;
  }

  .page-toolbar__actions {
    justify-content: flex-start;
  }

}

@media (max-width: 980px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .mobile-nav-button {
    display: inline-flex;
    min-height: var(--touch-target);
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-right: auto;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 700;
    letter-spacing: 0.01em;
    padding: 0 var(--space-3);
    transition: border-color var(--motion-fast), background-color var(--motion-fast), color var(--motion-fast), transform var(--motion-fast);
  }

  .mobile-nav-button .icon {
    width: 1.05rem;
    height: 1.05rem;
  }

  .mobile-nav-button:hover,
  .mobile-nav-button:focus-visible {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
    color: var(--color-primary-strong);
  }

  .mobile-nav-toggle:checked ~ .app-shell .mobile-nav-button {
    border-color: var(--color-primary);
    background: var(--color-sidebar-bg);
    color: var(--color-sidebar-text);
  }

  .app-topbar {
    padding: 0 var(--space-4);
  }

  .app-topbar__notification,
  .app-topbar__logout {
    width: var(--touch-target);
    height: var(--touch-target);
  }

  .app-topbar__profile {
    min-height: var(--touch-target);
  }

  .mobile-nav-toggle:checked ~ .app-shell::after {
    position: fixed;
    inset: 0;
    z-index: 39;
    background: var(--color-backdrop);
    content: "";
  }
}

@media (max-width: 720px) {
  body {
    font-size: var(--font-size-mobile-body);
  }

  .app-main {
    padding: var(--space-3);
  }

  .app-topbar {
    padding: 0 var(--space-3);
  }

  .app-topbar__profile-name {
    max-width: 7rem;
  }

  .page-actions,
  .page-actions .button,
  .page-toolbar__actions,
  .page-toolbar__actions .button {
    width: 100%;
  }

  .page-toolbar__filters {
    grid-template-columns: 1fr;
  }

  .quick-filter-bar,
  .task-quick-filters,
  .detail-tabs,
  .subtabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .quick-filter-bar span,
  .quick-filter-bar a,
  .task-quick-filters span,
  .task-quick-filters a,
  .detail-tabs__item,
  .subtabs__item {
    min-height: var(--touch-target);
  }

  .list-toolbar,
  .task-filter-advanced,
  .quick-filter-bar,
  .task-quick-filters,
  .bulk-actions-bar,
  .task-bulk-toolbar {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .list-toolbar__actions {
    justify-content: flex-start;
  }
}