/* Application shell — product admin layout (not marketing Header FSK) */

.app-shell {
  display: flex;
  min-height: 100vh;
  font-family: var(--font-family-primary);
  background: var(--color-background-page);
  color: var(--color-text-primary);
}

.shell-sidebar {
  width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  background: var(--color-background-tabbar);
  color: var(--color-text-inverse);
  padding: var(--spacing-7) var(--spacing-4);
  transition: width 0.2s ease, padding 0.2s ease;
}

.shell-sidebar__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-4);
  padding: 0 var(--spacing-3) var(--spacing-7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: var(--spacing-5);
}

.shell-sidebar__logo {
  display: block;
  width: auto;
  height: 28px;
  object-fit: contain;
}

.shell-sidebar__brand-text {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.shell-sidebar__title {
  font-size: var(--font-size-body-sm);
  font-weight: var(--font-weight-heading-xs);
  line-height: var(--line-height-body-sm);
}

.shell-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  flex: 1;
}

.shell-nav__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  width: 100%;
  min-height: 44px;
  padding: var(--spacing-3) var(--spacing-4);
  border: none;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-text-inverse-muted);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-body-md);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.shell-nav__item:hover:not(:disabled) {
  background: var(--color-grey-jet);
  color: var(--color-text-inverse);
}

.shell-nav__item:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.shell-nav__item.is-active {
  background: var(--color-grey-jet);
  color: var(--color-text-inverse);
  font-weight: var(--font-weight-heading-xs);
}

.shell-nav__item:disabled {
  opacity: var(--opacity-disabled-on-inverse);
  cursor: not-allowed;
}

.shell-sidebar__bottom {
  margin-top: auto;
  padding-top: var(--spacing-5);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.shell-sidebar__version {
  font-size: var(--font-size-body-md);
  color: var(--color-text-inverse-muted);
}

.shell-sidebar__meta {
  padding: var(--spacing-3) var(--spacing-4) 0;
}

.shell-sidebar__toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  width: 100%;
  min-height: 44px;
  padding: var(--spacing-3) var(--spacing-4);
  border: none;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--color-text-inverse-muted);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body-md);
  font-weight: var(--font-weight-body-md);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.shell-sidebar__toggle:hover {
  background: var(--color-grey-jet);
  color: var(--color-text-inverse);
}

.shell-sidebar__toggle:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

.shell-sidebar__toggle-icon--expand {
  display: none;
}

.app-shell--sidebar-collapsed .shell-sidebar__toggle-icon--collapse {
  display: none;
}

.app-shell--sidebar-collapsed .shell-sidebar__toggle-icon--expand {
  display: block;
}

.shell-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.shell-header {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-5);
  min-height: 72px;
  padding: 0 var(--spacing-8);
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-background-surface);
}

.shell-header__menu-toggle {
  display: none;
  flex-shrink: 0;
  margin-right: auto;
}

.shell-header__menu-icon--close {
  display: none;
}

.shell-header__menu-toggle[aria-expanded="true"] .shell-header__menu-icon--open {
  display: none;
}

.shell-header__menu-toggle[aria-expanded="true"] .shell-header__menu-icon--close {
  display: block;
}

.shell-sidebar__close {
  display: none;
  align-self: flex-end;
  color: var(--color-text-inverse-muted);
}

.shell-sidebar-overlay {
  display: none;
}

.shell-header__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.shell-header__notifications {
  position: relative;
}

.shell-header__badge-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-action-primary);
  border: 2px solid var(--color-background-surface);
}

.shell-header__profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding-left: var(--spacing-3);
  border-left: 1px solid var(--color-border-subtle);
}

.shell-header__profile-name {
  font-size: var(--font-size-body-md);
  color: var(--color-text-primary);
}

.shell-content {
  flex: 1;
  padding: var(--spacing-8);
  overflow: auto;
}

.view {
  display: none;
}

.view--active {
  display: block;
}

.view--legacy {
  max-width: 1200px;
}

.app-shell--sidebar-collapsed .shell-sidebar {
  width: 72px;
  padding-inline: var(--spacing-3);
}

.app-shell--sidebar-collapsed .shell-sidebar__brand-text,
.app-shell--sidebar-collapsed .shell-nav__item span,
.app-shell--sidebar-collapsed .shell-sidebar__meta,
.app-shell--sidebar-collapsed .shell-sidebar__version,
.app-shell--sidebar-collapsed .shell-sidebar__toggle span {
  display: none;
}

.app-shell--sidebar-collapsed .shell-sidebar__brand {
  align-items: center;
  padding-inline: 0;
}

.app-shell--sidebar-collapsed .shell-sidebar__logo {
  height: 24px;
}

.app-shell--sidebar-collapsed .shell-nav__item {
  justify-content: center;
  padding-inline: var(--spacing-3);
}

.app-shell--sidebar-collapsed .shell-sidebar__toggle {
  justify-content: center;
  padding-inline: var(--spacing-3);
}

@media (max-width: 1024px) {
  .shell-header__menu-toggle {
    display: inline-flex;
  }

  .shell-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 200;
    width: 260px;
    max-width: min(280px, 85vw);
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }

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

  .app-shell--sidebar-open .shell-sidebar__close {
    display: inline-flex;
  }

  .shell-sidebar-overlay {
    position: fixed;
    inset: 0;
    z-index: 199;
    background: rgba(0, 0, 0, 0.45);
  }

  .app-shell--sidebar-open .shell-sidebar-overlay {
    display: block;
  }

  body.shell-sidebar-open {
    overflow: hidden;
  }

  .shell-content {
    padding: var(--spacing-5);
  }

  .shell-header {
    padding-inline: var(--spacing-5);
  }

  .shell-header__profile-name {
    display: none;
  }
}