/* Application shell and shared page-layout primitives.
 * R11 step 6: keep table, form, modal, and domain styles out of this layer. */

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

.app-shell--collapsed {
  grid-template-columns: 76px minmax(0, 1fr);
}

.sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  height: 100vh;
  padding: var(--space-4) var(--space-4);
  min-width: 0;
  overflow: hidden;
}

.sidebar-brand-row {
  display: contents;
}

.mobile-nav-close,
.mobile-nav-toggle,
.mobile-nav-backdrop,
.mobile-topbar-brand {
  display: none;
}

.brand-block {
  align-items: center;
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  padding: 0 0 var(--space-2);
}

.brand-logo {
  display: block;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand-logo--full {
  height: 50px;
  width: 148px;
}

.brand-logo--compact {
  display: none;
  height: 34px;
  width: 34px;
}

.brand-copy {
  min-width: 0;
}

.brand-mark {
  color: var(--color-text-strong);
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-subtitle {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  margin-top: 3px;
}

.side-nav {
  align-content: start;
  display: grid;
  flex: 1;
  gap: var(--space-3);
  overflow-y: auto;
  overflow-x: hidden;
  margin-right: calc(var(--space-4) * -1);
  padding-right: calc(var(--space-4) - 2px);
  scrollbar-color: transparent transparent;
  scrollbar-width: thin;
}

.side-nav::-webkit-scrollbar {
  width: 6px;
}

.side-nav::-webkit-scrollbar-track {
  background: transparent;
}

.side-nav::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: var(--radius-full);
}

.sidebar:hover .side-nav {
  scrollbar-color: rgba(37, 99, 235, 0.24) transparent;
}

.sidebar:hover .side-nav::-webkit-scrollbar-thumb {
  background: rgba(37, 99, 235, 0.18);
}

.side-nav:hover::-webkit-scrollbar-thumb {
  background: rgba(37, 99, 235, 0.22);
}

.side-nav::-webkit-scrollbar-thumb:hover {
  background: rgba(37, 99, 235, 0.34);
}

.side-nav-section p {
  color: var(--color-text-subtle);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0;
  margin-bottom: var(--space-1);
  padding: 0 var(--space-3);
}

.side-nav-group-toggle {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: var(--radius-md);
  color: var(--color-text-strong);
  cursor: pointer;
  display: flex;
  font: inherit;
  font-weight: var(--font-weight-semibold);
  gap: var(--space-3);
  margin-bottom: var(--space-1);
  min-height: 36px;
  padding: 7px var(--space-3);
  text-align: left;
  transition: background var(--transition-fast), color var(--transition-fast);
  width: 100%;
}

.side-nav-group-toggle:hover {
  background: var(--color-bg-subtle);
  color: var(--color-selected);
}

.side-nav-group-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-nav-group-chevron {
  color: var(--color-text-muted);
  flex: none;
}

.side-nav-list {
  display: grid;
  gap: var(--space-1);
}

.side-nav-list--closed {
  display: none;
}

.side-nav-section:has(.side-nav-group-toggle) .side-nav-list {
  padding-left: var(--space-6);
}

.side-nav a {
  align-items: center;
  border-radius: var(--radius-md);
  color: var(--color-text);
  display: flex;
  gap: var(--space-3);
  font-weight: var(--font-weight-medium);
  padding: 7px var(--space-3);
  transition: background var(--transition-fast), color var(--transition-fast);
  min-width: 0;
}

.side-nav-label {
  align-items: center;
  display: inline-flex;
  flex: 1;
  gap: var(--space-1);
  min-width: 0;
}

.side-nav-label-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dev-status-badge {
  background: var(--color-warning-soft);
  border: 1px solid color-mix(in srgb, var(--color-warning) 24%, transparent);
  border-radius: 999px;
  color: var(--color-warning);
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  padding: 3px 6px;
  white-space: nowrap;
}

.side-nav-pending-badge {
  margin-left: 2px;
}

.side-nav a.active,
.side-nav a:hover {
  background: var(--color-selected-soft);
  color: var(--color-selected);
}

.side-nav a.active {
  box-shadow: inset 3px 0 0 var(--color-selected);
}

.sidebar-footer {
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: grid;
  gap: 2px;
  padding: var(--space-3);
}

.sidebar-footer span {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.sidebar-footer strong {
  color: var(--color-text-strong);
  font-size: var(--font-size-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-shell--collapsed .sidebar {
  align-items: center;
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

.app-shell--collapsed .brand-copy,
.app-shell--collapsed .side-nav-section p,
.app-shell--collapsed .side-nav-group-label,
.app-shell--collapsed .side-nav-group-chevron,
.app-shell--collapsed .side-nav a span,
.app-shell--collapsed .sidebar-footer {
  display: none;
}

.app-shell--collapsed .brand-block {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

.app-shell--collapsed .brand-logo--full {
  display: none;
}

.app-shell--collapsed .brand-logo--compact {
  display: block;
}

.app-shell--collapsed .side-nav {
  gap: var(--space-2);
  margin-right: 0;
  overflow-y: auto;
  padding-right: 0;
  scrollbar-width: none;
  width: 100%;
  overflow-x: hidden;
}

.app-shell--collapsed .side-nav::-webkit-scrollbar {
  display: none;
}

.app-shell--collapsed .side-nav-section {
  display: grid;
  gap: 6px;
  justify-items: center;
}

.app-shell--collapsed .side-nav-group-toggle {
  border-radius: var(--radius-md);
  display: inline-flex;
  height: 38px;
  justify-content: center;
  margin-bottom: 0;
  min-height: 38px;
  padding: 0;
  width: 38px;
}

.app-shell--collapsed .side-nav-list {
  gap: 6px;
  justify-items: center;
  padding-left: 0;
  width: 100%;
}

.app-shell--collapsed .side-nav-section:has(.side-nav-group-toggle) .side-nav-list {
  padding-left: 0;
}

.app-shell--collapsed .side-nav a {
  height: 44px;
  justify-content: center;
  padding: 0;
  width: 44px;
}

.app-shell--collapsed .side-nav a svg {
  height: 20px;
  width: 20px;
}

.app-shell--collapsed .side-nav a.active {
  box-shadow: inset 0 -3px 0 var(--color-accent);
}

.main-area {
  display: grid;
  grid-template-rows: var(--topbar-height) minmax(0, 1fr);
  height: 100vh;
  min-width: 0;
  overflow: hidden;
}

.topbar {
  align-items: center;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  height: var(--topbar-height);
  justify-content: space-between;
  padding: 0 var(--space-7);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar-left,
.topbar-actions {
  align-items: center;
  display: flex;
  gap: var(--space-3);
}

.topbar span {
  color: var(--color-text-muted);
}

.notice-menu-wrap {
  position: relative;
}

.notice-count {
  align-items: center;
  background: var(--color-danger);
  border: 2px solid var(--color-surface);
  border-radius: var(--radius-full);
  color: var(--color-text-inverse) !important;
  display: inline-flex;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  height: 20px;
  justify-content: center;
  min-width: 20px;
  padding: 0 4px;
  position: absolute;
  right: -7px;
  top: -7px;
}

.notice-popover {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: grid;
  gap: var(--space-1);
  min-width: 238px;
  padding: var(--space-3);
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: var(--z-dropdown);
}

.notice-popover__header {
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-1);
  padding: 0 var(--space-1) var(--space-2);
}

.notice-popover__header strong {
  color: var(--color-text-strong);
}

.notice-popover__header span {
  color: var(--color-danger);
  font-weight: var(--font-weight-semibold);
}

.notice-popover__header span.is-zero,
.notice-popover a strong.is-zero {
  background: var(--color-surface-muted);
  color: var(--color-text-strong);
}

.notice-popover__header span.is-zero {
  border-radius: var(--radius-full);
  padding: 2px 8px;
}

.notice-popover a,
.notice-popover p {
  align-items: center;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  min-height: 38px;
  padding: 0 var(--space-3);
}

.notice-popover a:hover {
  background: var(--color-selected-soft);
  color: var(--color-selected);
}

.notice-popover a strong {
  background: var(--color-danger-soft);
  border-radius: var(--radius-full);
  color: var(--color-danger);
  min-width: 28px;
  padding: 2px 8px;
  text-align: center;
}

.user-menu {
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  display: flex;
  gap: var(--space-2);
  height: 42px;
  padding: 0 var(--space-3) 0 var(--space-1);
}

.user-menu-wrap {
  position: relative;
}

.user-menu-popover {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: grid;
  gap: var(--space-1);
  min-width: 164px;
  padding: var(--space-2);
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: var(--z-dropdown);
}

.user-menu-popover button {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  display: flex;
  gap: var(--space-2);
  min-height: 36px;
  padding: 0 var(--space-3);
  text-align: left;
}

.user-menu-popover button:hover {
  background: var(--color-selected-soft);
  color: var(--color-selected);
}

.user-avatar {
  align-items: center;
  background: var(--color-brand);
  border-radius: var(--radius-full);
  color: var(--color-accent);
  display: inline-flex;
  font-weight: var(--font-weight-bold);
  height: 32px;
  justify-content: center;
  width: 32px;
}

.user-menu span:not(.user-avatar) {
  display: grid;
  gap: 1px;
  text-align: left;
}

.user-menu strong {
  color: var(--color-text-strong);
  font-size: var(--font-size-sm);
}

.user-menu small {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

.page-content {
  margin: 0 auto;
  max-width: var(--content-max-width);
  overflow-y: auto;
  padding: var(--space-7);
  width: 100%;
}

.page-stack {
  display: grid;
  gap: var(--space-5);
}

.page-heading {
  align-items: end;
  display: flex;
  gap: var(--space-5);
  justify-content: space-between;
}

.page-heading > p {
  max-width: 460px;
  text-align: right;
}

.notice-popover--alerts {
  min-width: 292px;
}

.notice-popover--alerts a {
  gap: var(--space-4);
  min-height: 58px;
}

.notice-popover__copy {
  align-items: flex-start;
  display: grid;
  gap: 2px;
}

.notice-popover__copy b {
  color: var(--color-text-strong);
  font-weight: var(--font-weight-semibold);
}

.notice-popover__copy small {
  color: var(--color-text-muted);
  font-size: 11px;
}

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

.surface {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  min-width: 0;
  padding: var(--space-6);
}

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

.section-stack {
  display: grid;
  gap: var(--space-5);
}

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

@media (min-width: 781px) {
  .mobile-nav-close {
    display: none !important;
  }
}

@media (max-width: 780px) {
  .app-shell {
    grid-template-columns: 1fr;
    height: 100dvh;
    min-height: 100dvh;
    overflow: hidden;
  }

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

  .sidebar {
    align-items: stretch;
    bottom: 0;
    box-shadow: 18px 0 48px rgba(15, 23, 42, 0.18);
    height: 100dvh;
    left: 0;
    max-width: 320px;
    padding: var(--space-4);
    position: fixed;
    top: 0;
    transform: translateX(-105%);
    transition: transform 180ms ease;
    width: 82vw;
    z-index: 70;
  }

  .sidebar--mobile-open {
    transform: translateX(0);
  }

  .app-shell--collapsed .sidebar {
    align-items: stretch;
    padding: var(--space-4);
  }

  .sidebar-brand-row {
    align-items: center;
    display: flex;
    justify-content: space-between;
  }

  .mobile-nav-close {
    display: inline-flex;
    flex: 0 0 auto;
  }

  .mobile-nav-backdrop {
    background: rgba(15, 23, 42, 0.56);
    border: 0;
    display: block;
    inset: 0;
    padding: 0;
    position: fixed;
    z-index: 60;
  }

  .app-shell--collapsed .brand-copy,
.app-shell--collapsed .side-nav-section p,
.app-shell--collapsed .side-nav-group-label,
.app-shell--collapsed .side-nav-group-chevron,
.app-shell--collapsed .side-nav a span,
.app-shell--collapsed .sidebar-footer {
    display: revert;
  }

  .app-shell--collapsed .brand-block {
    justify-content: flex-start;
    padding: 0 var(--space-2) var(--space-2);
  }

  .app-shell--collapsed .brand-logo--full {
    display: block;
  }

  .app-shell--collapsed .brand-logo--compact {
    display: none;
  }

  .app-shell--collapsed .side-nav a {
    height: auto;
    justify-content: flex-start;
    padding: 10px var(--space-3);
    width: auto;
  }

  .app-shell--collapsed .side-nav-list {
    justify-items: stretch;
    padding-left: var(--space-6);
  }

  .app-shell--collapsed .side-nav-group-toggle {
    display: flex;
    height: auto;
    justify-content: flex-start;
    min-height: 42px;
    padding: 10px var(--space-3);
    width: 100%;
  }

  .app-shell--collapsed .side-nav-section:has(.side-nav-group-toggle) .side-nav-list {
    padding-left: var(--space-6);
  }

  .side-nav {
    max-height: none;
    overscroll-behavior: contain;
  }

  .main-area {
    grid-template-rows: 56px minmax(0, 1fr);
    height: 100dvh;
  }

  .topbar {
    align-items: center;
    flex-direction: row;
    gap: var(--space-2);
    height: 56px;
    padding: 0 var(--space-3);
    position: sticky;
  }

  .desktop-nav-toggle,
.topbar-help {
    display: none;
  }

  .mobile-nav-toggle {
    display: inline-flex;
    flex: 0 0 auto;
  }

  .topbar-left {
    flex: 1;
    gap: var(--space-2);
    min-width: 0;
  }

  .mobile-topbar-brand {
    align-items: center;
    display: flex;
    min-width: 0;
  }

  .mobile-topbar-brand img {
    display: block;
    height: 38px;
    max-width: 124px;
    object-fit: contain;
  }

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

  .user-menu span:not(.user-avatar),
.user-menu > svg,
.user-menu small {
    display: none;
  }

  .user-menu {
    height: 40px;
    padding: 3px;
    width: 40px;
  }

  .page-content {
    overflow-x: hidden;
    overflow-y: auto;
    padding: var(--space-4);
  }

  .page-heading {
    align-items: start;
    display: grid;
  }

  .page-heading > p {
    text-align: left;
  }

  .section-heading,
.page-actions {
    align-items: stretch;
    display: grid;
  }

}

@media (prefers-reduced-motion: reduce) {
  .sidebar {
    transition: none;
  }
}