/* =============================================================
 * 70-app-shell-solid.css — Solid SaaS console shell (v2 only)
 *
 * Purpose: Replace the dark glass v2 shell (header + sidebar) with
 *   a solid, warm-ivory + petrol/teal SaaS console look on both
 *   app.html (body.app-v4) and admin.html (body.admin-v4).
 *
 * Strategy:
 *   - Shell-scoped --mb-shell-* tokens (light-always; content area
 *     still respects data-theme via untouched --surface/--text-* ).
 *   - Markup-light: a thin pair of wrappers inside <nav class="nav">
 *     (.mb-shell-header-region, .mb-shell-sidebar-region in app;
 *      .mb-shell-header-region in admin).
 *   - Desktop (>=641px): nav.nav becomes the fixed left sidebar,
 *     .mb-shell-header-region is lifted as a fixed top header strip;
 *     admin keeps nav.nav as header + #admin-nav-tabs as sidebar.
 *   - Mobile (<=640px): solid ivory top bar / drawer / bottom nav.
 *   - !important is used wherever 45/47/62/68 already stamp the
 *     same selector with !important.
 *
 * Load order: keep this file LAST among shell-touching layers.
 *   - app.html: after 64-mobile-app-shell.css
 *   - admin.html: after 62-app-relaunch.css
 *
 * Note: 64-mobile-app-shell.css hides <nav class="nav"> on mobile
 *   for body.app-v4 and shows .mob-bnav as the primary surface.
 *   We do NOT undo that — we just restyle .mob-bnav and the drawer.
 * ============================================================= */

/* ─────────────────────────────────────────────
 * 3a — Shell-scoped tokens (light-always)
 *
 * IMPORTANT: tokens are declared at body level so they cascade to #app,
 * .page, .content — not only to the shell descendants. Without the body
 * declaration, `var(--mb-shell-sidebar-w)` would evaluate to `unset` on
 * `#app.app-visible` (which is an ancestor of nav.nav, not a descendant),
 * the padding-left declaration becomes invalid, and the entire content
 * offset silently fails. The descendant rule below is kept for redundancy.
 *
 * Also forces --sidebar-w and --admin-sw to 228px to defeat
 * 62-app-relaunch.css's 224/244 overrides — that way any consumer in
 * 04-layout / 62 / 68 / 03-nav lands on the same number we use.
 * ───────────────────────────────────────────── */
:root {
  --mb-shell-sidebar-width: 232px;
  --mb-shell-header-height: 56px;
  --mb-shell-preview-height: 36px;
}

html[data-design="v2"] body.app-v4,
html[data-design="v2"] body.admin-v4 {
  --mb-shell-sidebar-width: 232px;
  --mb-shell-header-height: 56px;
  --mb-shell-preview-height: 36px;
  --mb-shell-bg:            #FBFAF6;
  --mb-shell-surface:       #FFFFFF;
  --mb-shell-surface-soft:  #F4F1EA;
  --mb-shell-border:        rgba(28, 42, 36, .14);
  --mb-shell-border-strong: rgba(28, 42, 36, .22);
  --mb-shell-divider:       rgba(28, 42, 36, .08);
  --mb-shell-text:          #17211D;
  --mb-shell-text-muted:    #5C6862;
  --mb-shell-text-soft:     #8A958F;
  --mb-shell-accent:        #0E8F83;
  --mb-shell-accent-strong: #08766E;
  --mb-shell-accent-soft:   rgba(14, 143, 131, .10);
  --mb-shell-accent-bar:    #0E8F83;
  --mb-shell-danger:        #C64040;
  --mb-shell-header-h:      var(--mb-shell-header-height);
  --mb-shell-sidebar-w:     var(--mb-shell-sidebar-width);
  --mb-shell-radius:        8px;
  --mb-shell-radius-sm:     6px;
  --mb-shell-item-h:        36px;
  --sidebar-w:              var(--mb-shell-sidebar-width) !important;
  --admin-sw:               var(--mb-shell-sidebar-width) !important;
}
html[data-design="v2"] body.app-v4 nav.nav,
html[data-design="v2"] body.app-v4 .mb-shell-header-region,
html[data-design="v2"] body.app-v4 .mb-shell-sidebar-region,
html[data-design="v2"] body.admin-v4 nav.nav,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs,
html[data-design="v2"] body.app-v4 .mob-bnav,
html[data-design="v2"] body.app-v4 .mob-drawer,
html[data-design="v2"] body.admin-v4 .mob-drawer {
  --mb-shell-bg:            #FBFAF6;
  --mb-shell-surface:       #FFFFFF;
  --mb-shell-surface-soft:  #F4F1EA;
  --mb-shell-border:        rgba(28, 42, 36, .14);
  --mb-shell-border-strong: rgba(28, 42, 36, .22);
  --mb-shell-divider:       rgba(28, 42, 36, .08);
  --mb-shell-text:          #17211D;
  --mb-shell-text-muted:    #5C6862;
  --mb-shell-text-soft:     #8A958F;
  --mb-shell-accent:        #0E8F83;
  --mb-shell-accent-strong: #08766E;
  --mb-shell-accent-soft:   rgba(14, 143, 131, .10);
  --mb-shell-accent-bar:    #0E8F83;
  --mb-shell-danger:        #C64040;
  --mb-shell-sidebar-width: 232px;
  --mb-shell-header-height: 56px;
  --mb-shell-preview-height: 36px;
  --mb-shell-header-h:      var(--mb-shell-header-height);
  --mb-shell-sidebar-w:     var(--mb-shell-sidebar-width);
  --mb-shell-radius:        8px;
  --mb-shell-radius-sm:     6px;
  --mb-shell-item-h:        36px;
}

html[data-design="v2"] body.app-v4 {
  background: var(--mb-shell-bg) !important;
  overflow-x: hidden;
}

html[data-design="v2"] body.app-v4 #app.app-visible {
  width: 100%;
  min-width: 0;
  overflow-x: clip;
}

/* App-only operator preview bar. It is intentionally independent from the
   normal app header so preview controls never become a second header row. */
html[data-design="v2"] body.app-v4 #operator-preview-bar.mb-preview-bar {
  min-height: var(--mb-shell-preview-height);
  padding: 5px 14px !important;
  align-items: center !important;
  gap: 8px !important;
  flex-wrap: wrap;
  background: #FFFFFF !important;
  border-bottom: 1px solid var(--mb-shell-border) !important;
  box-shadow: none !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  color: var(--mb-shell-text) !important;
  font-family: var(--font, Inter, ui-sans-serif, system-ui, sans-serif);
  font-size: 11px !important;
  font-weight: 650 !important;
  line-height: 1.2;
}

html[data-design="v2"] body.app-v4 #operator-preview-bar .preview-headline {
  white-space: nowrap;
  font-weight: 750;
  color: var(--mb-shell-text);
}

html[data-design="v2"] body.app-v4 #preview-role-switcher,
html[data-design="v2"] body.app-v4 #preview-device-switcher {
  display: flex !important;
  align-items: center;
  flex-wrap: wrap;
  gap: 3px;
  min-width: 0;
}

html[data-design="v2"] body.app-v4 #preview-device-switcher {
  margin-left: auto;
  padding: 2px;
  border: 1px solid var(--mb-shell-border);
  border-radius: var(--mb-shell-radius);
  background: var(--mb-shell-surface-soft);
  flex-shrink: 0;
}

html[data-design="v2"] body.app-v4 #preview-role-status,
html[data-design="v2"] body.app-v4 #preview-user-info {
  font-size: 11px;
  font-weight: 550;
  color: var(--mb-shell-text-muted);
  white-space: nowrap;
}

html[data-design="v2"] body.app-v4 .preview-role-btn,
html[data-design="v2"] body.app-v4 .preview-device-btn,
html[data-design="v2"] body.app-v4 .preview-exit-btn {
  min-height: 26px !important;
  height: 26px;
  padding: 0 9px !important;
  border: 1px solid var(--mb-shell-border) !important;
  border-radius: var(--mb-shell-radius-sm) !important;
  background: var(--mb-shell-surface) !important;
  color: var(--mb-shell-text-muted) !important;
  box-shadow: none !important;
  font: inherit !important;
  font-size: 11px !important;
  font-weight: 700 !important;
  white-space: nowrap;
  cursor: pointer;
  display: inline-flex !important;
  align-items: center;
  gap: 4px;
  transition: border-color .12s ease, color .12s ease, background-color .12s ease;
}

html[data-design="v2"] body.app-v4 .preview-role-btn:hover,
html[data-design="v2"] body.app-v4 .preview-device-btn:hover,
html[data-design="v2"] body.app-v4 .preview-exit-btn:hover {
  border-color: var(--mb-shell-accent) !important;
  color: var(--mb-shell-accent) !important;
}

html[data-design="v2"] body.app-v4 .preview-role-btn.active,
html[data-design="v2"] body.app-v4 .preview-device-btn.active {
  background: var(--mb-shell-accent-soft) !important;
  border-color: rgba(14, 143, 131, .24) !important;
  color: var(--mb-shell-accent-strong) !important;
}

/* =============================================================
 * DESKTOP (>=641px) — fixed header + fixed sidebar
 * ============================================================= */
@media (min-width: 641px) {

  /* ─── APP: nav.nav → left sidebar ─── */
  html[data-design="v2"] body.app-v4 #app > nav.nav {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    right: auto !important;
    bottom: 0 !important;
    width: var(--mb-shell-sidebar-w) !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-right: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    background: var(--mb-shell-bg) !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    z-index: 90 !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: visible !important;
  }

  /* App header strip is split into two fixed regions that sit side-by-side:
     --brand (left, sidebar-w wide, above the sidebar) + --actions (right, fills the rest). */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region--brand,
  html[data-design="v2"] body.app-v4 .mb-shell-header-region--actions {
    position: fixed !important;
    top: 0 !important;
    height: var(--mb-shell-header-h) !important;
    background: var(--mb-shell-bg) !important;
    border: 0 !important;
    border-bottom: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    z-index: 110 !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 8px !important;
    color: var(--mb-shell-text) !important;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region--brand {
    left: 0 !important;
    width: var(--mb-shell-sidebar-w) !important;
    padding: 0 16px !important;
    border-right: 1px solid var(--mb-shell-divider) !important;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region--actions {
    left: var(--mb-shell-sidebar-w) !important;
    right: 0 !important;
    width: auto !important;
    padding: 0 18px !important;
    justify-content: flex-start;
    min-width: 0 !important;
    overflow: hidden !important;
  }

  /* App nav-brand inside the brand region: simple flex, no internal padding */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region--brand .nav-brand {
    width: 100% !important;
    height: var(--mb-shell-header-h);
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    display: flex !important;
    align-items: center !important;
    color: var(--mb-shell-text);
    font-weight: 700;
  }

  /* App nav-tabs sit BELOW the header inside .mb-shell-sidebar-region */
  html[data-design="v2"] body.app-v4 .mb-shell-sidebar-region {
    margin-top: var(--mb-shell-header-h) !important;
    height: calc(100vh - var(--mb-shell-header-h)) !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    padding: 10px 8px 14px !important;
    scrollbar-width: thin;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-sidebar-region .nav-tabs {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    padding: 0 !important;
    gap: 2px !important;
    background: transparent !important;
    border: 0 !important;
  }

  /* App content offset: header height + sidebar width.
     #app.app-visible's padding is the SINGLE source of truth for the sidebar
     offset. .page below resets 62-app-relaunch.css's stale margin-left so it
     centers inside the padded #app instead of double-offsetting. */
  html[data-design="v2"] body.app-v4 #app.app-visible {
    padding-top: var(--mb-shell-header-h) !important;
    padding-left: var(--mb-shell-sidebar-w) !important;
    min-height: 100vh !important;
    box-sizing: border-box !important;
  }
  html[data-design="v2"] body.app-v4 #app:not(.app-visible) #auth-landing {
    /* auth-landing renders pre-login; do not push it under the shell */
    padding-top: 0;
    padding-left: 0;
  }
  html[data-design="v2"] body.app-v4 .page {
    margin-left: auto !important;
    margin-right: auto !important;
    width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
  }

  /* Mobile hamburger inside the desktop header region: hide */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .mob-menu-btn {
    display: none !important;
  }

  /* ─── ADMIN: nav.nav stays as header, #admin-nav-tabs as sidebar ───
     `left + right + width` are all set explicitly so that 62-app-relaunch.css's
     padding-inline/backdrop-filter and 68's light-only floating-card geometry
     never push the header past the viewport edge. `overflow:hidden` is the final
     guard against intrinsic-width children (long emails, button labels). */
  html[data-design="v2"] body.admin-v4 nav.nav {
    position: fixed !important;
    left: var(--mb-shell-sidebar-w) !important;
    right: 0 !important;
    top: 0 !important;
    bottom: auto !important;
    width: calc(100% - var(--mb-shell-sidebar-w)) !important;
    max-width: calc(100vw - var(--mb-shell-sidebar-w)) !important;
    height: var(--mb-shell-header-h) !important;
    margin: 0 !important;
    padding: 0 18px !important;
    border: 0 !important;
    border-bottom: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    background: var(--mb-shell-bg) !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    z-index: 110 !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 10px !important;
    color: var(--mb-shell-text) !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
    min-width: 0 !important;
  }
  /* Admin header right-cluster: prevent intrinsic widths from breaking out. */
  html[data-design="v2"] body.admin-v4 nav.nav .nav-user {
    flex-shrink: 1 !important;
    min-width: 0 !important;
    max-width: 100%;
    overflow: hidden;
  }
  html[data-design="v2"] body.admin-v4 nav.nav #nav-email {
    max-width: 200px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    display: inline-block !important;
    vertical-align: middle;
    min-width: 0 !important;
  }
  /* Drop the operator role badge before the actions cluster starts cropping. */
  @media (max-width: 1100px) {
    html[data-design="v2"] body.admin-v4 nav.nav .nav-badge,
    html[data-design="v2"] body.admin-v4 nav.nav .nav-sep {
      display: none !important;
    }
  }
  /* At medium widths, compress non-essential labels so primary actions stay visible. */
  @media (max-width: 1280px) {
    html[data-design="v2"] body.admin-v4 nav.nav .btn-preview {
      padding: 0 8px !important;
      gap: 4px !important;
    }
    html[data-design="v2"] body.admin-v4 nav.nav #nav-email {
      max-width: 140px !important;
    }
  }

  html[data-design="v2"] body.admin-v4 nav.nav .mb-shell-header-region {
    display: contents;
  }

  html[data-design="v2"] body.admin-v4 nav.nav .nav-brand {
    height: var(--mb-shell-header-h);
    padding: 0 12px 0 0 !important;
    margin: 0 12px 0 0 !important;
    border: 0 !important;
    border-right: 1px solid var(--mb-shell-divider) !important;
    border-radius: 0 !important;
    background: transparent !important;
    display: flex !important;
    align-items: center !important;
    color: var(--mb-shell-text) !important;
  }

  html[data-design="v2"] body.admin-v4 #admin-nav-tabs {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    bottom: 0 !important;
    width: var(--mb-shell-sidebar-w) !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: calc(var(--mb-shell-header-h) + 12px) 8px 14px !important;
    border: 0 !important;
    border-right: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    background: var(--mb-shell-bg) !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 2px !important;
    z-index: 90 !important;
  }

  /* Admin content offset: lives under .content (legacy class shared with .tab-btn content panes) */
  html[data-design="v2"] body.admin-v4 > .content,
  html[data-design="v2"] body.admin-v4 main.content,
  html[data-design="v2"] body.admin-v4 > div.content {
    margin-left: var(--mb-shell-sidebar-w) !important;
    margin-top: var(--mb-shell-header-h) !important;
    padding: 24px 28px 40px !important;
  }
  /* Admin uses #tab-* divs with class="content" as tab panes; offset them at root level only */
  html[data-design="v2"] body.admin-v4 [id^="tab-"].content {
    margin-left: var(--mb-shell-sidebar-w) !important;
    margin-top: var(--mb-shell-header-h) !important;
    padding-top: 24px;
  }
}

/* =============================================================
 * 3c — Nav items: .ntab, .ndropitem (app) + .tab-btn (admin)
 * ============================================================= */
html[data-design="v2"] body.app-v4 .ntab,
html[data-design="v2"] body.app-v4 .ndropitem,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  width: 100% !important;
  min-height: var(--mb-shell-item-h) !important;
  height: var(--mb-shell-item-h) !important;
  padding: 0 12px !important;
  margin: 0 !important;
  border: 0 !important;
  border-left: 3px solid transparent !important;
  border-bottom: 0 !important;
  border-radius: var(--mb-shell-radius) !important;
  background: transparent !important;
  color: var(--mb-shell-text-muted) !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
  letter-spacing: 0 !important;
  text-align: left !important;
  white-space: nowrap !important;
  cursor: pointer;
  box-shadow: none !important;
  transition: background-color .12s ease, color .12s ease, border-left-color .12s ease;
}

html[data-design="v2"] body.app-v4 .ntab:hover,
html[data-design="v2"] body.app-v4 .ndropitem:hover,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn:hover {
  background: var(--mb-shell-surface) !important;
  color: var(--mb-shell-text) !important;
  border-left-color: transparent !important;
  box-shadow: none !important;
}

/* Active state — left rail + petrol-soft fill + bold + petrol text */
html[data-design="v2"] body.app-v4 .ntab.active,
html[data-design="v2"] body.app-v4 .ndropitem.active,
html[data-design="v2"] body.app-v4 .ntab-group > .ntab.active,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn.active {
  background: var(--mb-shell-accent-soft) !important;
  color: var(--mb-shell-accent) !important;
  border-left-color: var(--mb-shell-accent-bar) !important;
  border-bottom-color: transparent !important;
  font-weight: 700 !important;
  box-shadow: none !important;
}

/* Icons — neutralize the active "disc" treatment from 47 */
html[data-design="v2"] body.app-v4 .ntab svg,
html[data-design="v2"] body.app-v4 .ndropitem svg,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn svg {
  width: 15px !important;
  height: 15px !important;
  flex-shrink: 0;
  color: var(--mb-shell-text-muted) !important;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  padding: 0 !important;
  margin: 0 !important;
}
html[data-design="v2"] body.app-v4 .ntab.active svg,
html[data-design="v2"] body.app-v4 .ndropitem.active svg,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn.active svg {
  color: var(--mb-shell-accent) !important;
}

/* Group dropdowns: render inline on desktop (existing 03-nav already does this; keep visuals clean) */
@media (min-width: 641px) {
  html[data-design="v2"] body.app-v4 .ntab-group > .ndropdown {
    position: static !important;
    display: none;
    background: transparent !important;
    border: 0 !important;
    box-shadow: none !important;
    padding: 2px 0 4px !important;
    min-width: 0 !important;
  }
  html[data-design="v2"] body.app-v4 .ntab-group.open > .ndropdown,
  html[data-design="v2"] body.app-v4 .ntab-group > .ndropdown.open {
    display: flex !important;
    flex-direction: column !important;
    gap: 2px;
  }
  html[data-design="v2"] body.app-v4 .ntab-group .ndropitem {
    height: 32px !important;
    min-height: 32px !important;
    padding-left: 30px !important;
    font-size: 12px !important;
  }
}

/* Badges inside nav items — keep their existing logic but recolor to fit ivory */
html[data-design="v2"] body.app-v4 .ntab .nbadge,
html[data-design="v2"] body.app-v4 .ndropitem .inbox-nav-badge,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-badge {
  margin-left: auto;
  background: var(--mb-shell-surface-soft) !important;
  color: var(--mb-shell-text-muted) !important;
  border: 1px solid var(--mb-shell-border) !important;
  border-radius: 999px !important;
  padding: 1px 7px !important;
  font-size: 10px !important;
  font-weight: 700 !important;
  line-height: 1.4 !important;
  box-shadow: none !important;
}
html[data-design="v2"] body.app-v4 .ntab.active .nbadge,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn.active .tab-badge {
  background: var(--mb-shell-accent) !important;
  color: #fff !important;
  border-color: var(--mb-shell-accent) !important;
}

/* Chevron in collapsible groups */
html[data-design="v2"] body.app-v4 .ntab .ntab-chevron {
  margin-left: auto;
  opacity: .7;
  width: 12px !important;
  height: 12px !important;
  transition: transform .15s ease;
}
html[data-design="v2"] body.app-v4 .ntab-group.open > .ntab .ntab-chevron {
  transform: rotate(180deg);
}

/* =============================================================
 * 3d — Section labels (app: .nav-section-label, admin: .nav-group__head)
 * ============================================================= */
html[data-design="v2"] body.app-v4 .nav-section-label,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .nav-group__head {
  display: block !important;
  padding: 14px 12px 4px !important;
  margin: 0 !important;
  border: 0 !important;
  border-top: 1px solid var(--mb-shell-divider) !important;
  background: transparent !important;
  font-size: 10px !important;
  font-weight: 700 !important;
  letter-spacing: .12em !important;
  text-transform: uppercase !important;
  color: var(--mb-shell-text-soft) !important;
}
html[data-design="v2"] body.app-v4 .nav-section-label:first-child,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs .nav-group__head:first-of-type {
  border-top: 0 !important;
  padding-top: 6px !important;
}

/* Override 03-nav.css' #group-kunden::before pseudo-label (already replaced by .nav-section-label) */
html[data-design="v2"] body.app-v4 #group-kunden::before {
  content: none !important;
}

/* =============================================================
 * 3e — Header right cluster (compact icon buttons + chip + segmented controls)
 * ============================================================= */
@media (min-width: 641px) {
  html[data-design="v2"] body.app-v4 .mb-shell-context {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 0;
    max-width: min(360px, 42vw);
    padding-right: 16px;
  }

  html[data-design="v2"] body.app-v4 .mb-shell-context__eyebrow {
    font-size: 9px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--mb-shell-text-soft);
  }

  html[data-design="v2"] body.app-v4 .mb-shell-context__title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--mb-shell-text);
    font-size: 13px;
    font-weight: 750;
    line-height: 1.2;
  }

  html[data-design="v2"] body.app-v4 .mb-shell-header-region .nav-right,
  html[data-design="v2"] body.admin-v4 nav.nav .nav-user {
    margin-left: auto !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    gap: 8px !important;
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
    flex-shrink: 1;
    min-width: 0;
  }

  /* Admin separator + role badge + design + theme + preview live left-of-cluster on admin */
  html[data-design="v2"] body.admin-v4 nav.nav .nav-badge {
    background: var(--mb-shell-accent-soft) !important;
    color: var(--mb-shell-accent) !important;
    border: 1px solid var(--mb-shell-border) !important;
    border-radius: 999px !important;
    padding: 3px 10px !important;
    font-size: 10px !important;
    font-weight: 700 !important;
    letter-spacing: .08em !important;
    box-shadow: none !important;
  }
  html[data-design="v2"] body.admin-v4 nav.nav .nav-sep {
    width: 1px;
    height: 20px;
    background: var(--mb-shell-divider);
    margin: 0 4px;
  }

  /* Compact icon-style buttons across header */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .icon-btn,
  html[data-design="v2"] body.admin-v4 nav.nav .btn-preview,
  html[data-design="v2"] body.admin-v4 nav.nav .btn-logout {
    height: 32px !important;
    min-height: 32px !important;
    padding: 0 12px !important;
    border-radius: var(--mb-shell-radius) !important;
    border: 1px solid var(--mb-shell-border) !important;
    background: var(--mb-shell-surface) !important;
    color: var(--mb-shell-text-muted) !important;
    font-size: 12px !important;
    font-weight: 600 !important;
    box-shadow: none !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    cursor: pointer;
    transition: border-color .12s ease, color .12s ease, background-color .12s ease;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .icon-btn:hover,
  html[data-design="v2"] body.admin-v4 nav.nav .btn-preview:hover {
    border-color: var(--mb-shell-accent) !important;
    color: var(--mb-shell-accent) !important;
    background: var(--mb-shell-surface) !important;
  }
  html[data-design="v2"] body.app-v4 #nav-logout-btn:hover,
  html[data-design="v2"] body.admin-v4 nav.nav .btn-logout:hover {
    border-color: var(--mb-shell-danger) !important;
    color: var(--mb-shell-danger) !important;
    background: var(--mb-shell-surface) !important;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .icon-btn svg {
    width: 14px;
    height: 14px;
    color: currentColor;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .nav-settings-label {
    font-weight: 600;
  }

  /* 2FA button (admin) — geometry !important, but color/border-color WITHOUT !important so
     inline style writes from _update2FANavButton() can still flip the signal. */
  html[data-design="v2"] body.admin-v4 nav.nav #nav-2fa-btn {
    height: 32px !important;
    min-height: 32px !important;
    padding: 0 10px !important;
    border-radius: var(--mb-shell-radius) !important;
    border-width: 1px !important;
    border-style: solid !important;
    background: var(--mb-shell-surface) !important;
    box-shadow: none !important;
    font-size: 11px !important;
    font-weight: 700 !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    /* color + border-color intentionally omitted — JS inline-style wins. */
  }

  /* User account chip — app & admin */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .nav-user,
  html[data-design="v2"] body.admin-v4 nav.nav .nav-user > .nav-av {
    box-shadow: none !important;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .nav-user {
    height: 32px !important;
    min-height: 32px !important;
    padding: 0 12px 0 4px !important;
    border: 1px solid var(--mb-shell-border) !important;
    border-radius: 999px !important;
    background: var(--mb-shell-surface) !important;
    color: var(--mb-shell-text) !important;
    gap: 8px !important;
    display: inline-flex !important;
    align-items: center !important;
    cursor: pointer;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .nav-user .nav-av {
    width: 24px !important;
    height: 24px !important;
    font-size: 11px !important;
    background: var(--mb-shell-accent) !important;
    color: #fff !important;
    border: 0 !important;
    box-shadow: none !important;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .nav-user .nav-un {
    font-size: 12.5px !important;
    color: var(--mb-shell-text) !important;
    font-weight: 600 !important;
  }
  html[data-design="v2"] body.admin-v4 nav.nav .nav-av {
    width: 24px !important;
    height: 24px !important;
    font-size: 11px !important;
    background: var(--mb-shell-accent) !important;
    color: #fff !important;
    border: 0 !important;
  }
  html[data-design="v2"] body.admin-v4 nav.nav #nav-email {
    font-size: 12px !important;
    color: var(--mb-shell-text) !important;
    font-weight: 600 !important;
  }

  /* The v11 app shell is light-only; old app theme controls stay out of the shell. */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .theme-seg {
    display: none !important;
  }

  /* Theme segmented control (admin legacy shell only). */
  html[data-design="v2"] body.admin-v4 nav.nav .theme-seg {
    height: 30px !important;
    padding: 2px !important;
    background: var(--mb-shell-surface-soft) !important;
    border: 1px solid var(--mb-shell-border) !important;
    border-radius: var(--mb-shell-radius) !important;
    box-shadow: none !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 0 !important;
  }
  html[data-design="v2"] body.admin-v4 nav.nav .tseg {
    height: 24px !important;
    padding: 0 8px !important;
    border-radius: var(--mb-shell-radius-sm) !important;
    background: transparent !important;
    color: var(--mb-shell-text-soft) !important;
    border: 0 !important;
    box-shadow: none !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
    cursor: pointer;
  }
  html[data-design="v2"] body.admin-v4 nav.nav .tseg svg {
    width: 12px;
    height: 12px;
  }
  html[data-design="v2"] body.admin-v4 nav.nav .tseg.active {
    background: var(--mb-shell-surface) !important;
    color: var(--mb-shell-accent) !important;
    box-shadow: 0 1px 2px rgba(28, 42, 36, .08) !important;
  }

  /* Design segmented control: v2 is hard-locked, hide entirely */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .design-seg,
  html[data-design="v2"] body.admin-v4 nav.nav .design-seg {
    display: none !important;
  }

  /* nav-right__actions inline */
  html[data-design="v2"] body.app-v4 .mb-shell-header-region .nav-right__actions {
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
  }
}

/* =============================================================
 * 3f — Mobile (<=640px): solid ivory across top bar / drawer / bottom nav
 * ============================================================= */
@media (max-width: 640px) {

  /* Mobile guard: undo the desktop sidebar/header offsets so the drawer +
     bottom-nav layout gets full viewport width. */
  html[data-design="v2"] body.app-v4 #app.app-visible {
    padding-top: 0 !important;
    padding-left: 0 !important;
  }
  html[data-design="v2"] body.app-v4 .page {
    margin-left: auto !important;
    margin-right: auto !important;
  }
  html[data-design="v2"] body.admin-v4 > .content,
  html[data-design="v2"] body.admin-v4 main.content,
  html[data-design="v2"] body.admin-v4 > div.content,
  html[data-design="v2"] body.admin-v4 [id^="tab-"].content {
    margin-left: 0 !important;
    margin-top: 0 !important;
  }

  /* Mobile top bar: applies to admin (always) + any app page where .nav is still visible
     (64-mobile-app-shell hides .nav for body.app-v4; this rule then becomes a no-op there). */
  html[data-design="v2"] body.app-v4 nav.nav,
  html[data-design="v2"] body.admin-v4 nav.nav {
    background: var(--mb-shell-bg) !important;
    border: 0 !important;
    border-bottom: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    height: var(--mb-shell-header-h) !important;
    min-height: var(--mb-shell-header-h) !important;
    color: var(--mb-shell-text) !important;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-header-region,
  html[data-design="v2"] body.admin-v4 nav.nav .mb-shell-header-region {
    /* On mobile: keep header-region as inline content of the bar, no fixed positioning */
    position: static !important;
    height: auto !important;
    border: 0 !important;
    background: transparent !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    width: 100%;
  }
  html[data-design="v2"] body.app-v4 .mb-shell-sidebar-region {
    /* On mobile, the sidebar region is hidden — drawer takes over */
    display: none !important;
  }

  /* Mobile hamburger button — solid look */
  html[data-design="v2"] body.app-v4 .mb-shell-context,
  html[data-design="v2"] body.app-v4 .mob-drawer-toggles,
  html[data-design="v2"] body.app-v4 .mobile-more-toggles {
    display: none !important;
  }

  html[data-design="v2"] body.app-v4 .mob-menu-btn,
  html[data-design="v2"] body.admin-v4 .mob-menu-btn {
    background: var(--mb-shell-surface) !important;
    border: 1px solid var(--mb-shell-border) !important;
    border-radius: var(--mb-shell-radius) !important;
    color: var(--mb-shell-text-muted) !important;
    box-shadow: none !important;
    width: 36px !important;
    height: 36px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin-left: auto !important;
  }

  /* Mobile drawer — solid ivory surface */
  html[data-design="v2"] .mob-drawer {
    background: var(--mb-shell-bg) !important;
    color: var(--mb-shell-text) !important;
    border: 0 !important;
    border-radius: 12px 12px 0 0 !important;
    box-shadow: 0 -8px 24px rgba(28, 42, 36, .10) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  html[data-design="v2"] .mob-drawer-head {
    background: var(--mb-shell-bg) !important;
    border-bottom: 1px solid var(--mb-shell-divider) !important;
    color: var(--mb-shell-text) !important;
  }
  html[data-design="v2"] .mob-drawer-close {
    background: var(--mb-shell-surface) !important;
    border: 1px solid var(--mb-shell-border) !important;
    border-radius: var(--mb-shell-radius) !important;
    color: var(--mb-shell-text-muted) !important;
    box-shadow: none !important;
  }
  html[data-design="v2"] .mob-drawer-body {
    background: var(--mb-shell-bg) !important;
  }
  html[data-design="v2"] .mob-drawer-section-lbl {
    color: var(--mb-shell-text-soft) !important;
    background: transparent !important;
    font-size: 10px !important;
    font-weight: 700 !important;
    letter-spacing: .12em !important;
    text-transform: uppercase !important;
  }
  html[data-design="v2"] .mob-drawer-item {
    background: transparent !important;
    color: var(--mb-shell-text-muted) !important;
    border: 0 !important;
    border-left: 3px solid transparent !important;
    border-radius: var(--mb-shell-radius) !important;
    min-height: 44px !important;
    font-weight: 600 !important;
    box-shadow: none !important;
  }
  html[data-design="v2"] .mob-drawer-item:hover {
    background: var(--mb-shell-surface) !important;
    color: var(--mb-shell-text) !important;
  }
  html[data-design="v2"] .mob-drawer-item.mob-active,
  html[data-design="v2"] .mob-drawer-item.active {
    background: var(--mb-shell-accent-soft) !important;
    color: var(--mb-shell-accent) !important;
    border-left-color: var(--mb-shell-accent-bar) !important;
    font-weight: 700 !important;
  }
  html[data-design="v2"] .mob-drawer-item svg {
    color: currentColor !important;
  }

  /* Mobile bottom nav (v4) — solid + petrol accent */
  html[data-design="v2"] body.app-v4 .mob-bnav {
    background: var(--mb-shell-bg) !important;
    border: 0 !important;
    border-top: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  html[data-design="v2"] body.app-v4 .mob-bnav-item {
    color: var(--mb-shell-text-muted) !important;
    background: transparent !important;
    border-radius: var(--mb-shell-radius) !important;
    box-shadow: none !important;
  }
  html[data-design="v2"] body.app-v4 .mob-bnav-item.active {
    background: var(--mb-shell-accent-soft) !important;
    color: var(--mb-shell-accent) !important;
    box-shadow: none !important;
  }
  html[data-design="v2"] body.app-v4 .mob-bnav-item.active svg,
  html[data-design="v2"] body.app-v4 .mob-bnav-item.active * {
    color: var(--mb-shell-accent) !important;
  }
  html[data-design="v2"] body.app-v4 .mob-bnav-item.active::after {
    background: var(--mb-shell-accent) !important;
    box-shadow: none !important;
  }

  /* Mobile "more" sheet (v4 secondary nav) */
  html[data-design="v2"] .mobile-more-sheet {
    background: var(--mb-shell-bg) !important;
    border: 0 !important;
    border-top: 1px solid var(--mb-shell-border) !important;
    box-shadow: 0 -8px 24px rgba(28, 42, 36, .10) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    color: var(--mb-shell-text) !important;
  }
  html[data-design="v2"] .mobile-more-backdrop {
    background: rgba(28, 42, 36, .30) !important;
    backdrop-filter: none !important;
  }
  html[data-design="v2"] .mobile-more-item {
    color: var(--mb-shell-text-muted) !important;
    background: transparent !important;
    border-radius: var(--mb-shell-radius) !important;
    box-shadow: none !important;
  }
  html[data-design="v2"] .mobile-more-item:hover {
    background: var(--mb-shell-surface) !important;
    color: var(--mb-shell-text) !important;
  }
  html[data-design="v2"] .mobile-more-item.is-active,
  html[data-design="v2"] .mobile-more-item.active {
    background: var(--mb-shell-accent-soft) !important;
    color: var(--mb-shell-accent) !important;
    font-weight: 700 !important;
  }

  /* Admin tab strip on mobile: keep horizontal scroll, ivory background */
  html[data-design="v2"] body.admin-v4 #admin-nav-tabs {
    background: var(--mb-shell-bg) !important;
    border: 0 !important;
    border-bottom: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    padding: 6px 8px !important;
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    gap: 4px !important;
  }
  html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn {
    flex: 0 0 auto !important;
    width: auto !important;
    border-left: 0 !important;
    border-bottom: 2px solid transparent !important;
    border-radius: var(--mb-shell-radius-sm) !important;
    height: 32px !important;
    min-height: 32px !important;
    padding: 0 10px !important;
  }
  html[data-design="v2"] body.admin-v4 #admin-nav-tabs .tab-btn.active {
    border-left-color: transparent !important;
    border-bottom-color: var(--mb-shell-accent-bar) !important;
  }
  html[data-design="v2"] body.admin-v4 #admin-nav-tabs .nav-group__head {
    display: none !important;
  }
}

/* =============================================================
 * 3g — Operator preview-bar offset
 *   When body.has-preview-bar is active (set by 99-main.js when
 *   sessionStorage.operator_preview === '1'), pin the preview bar to
 *   the very top of the viewport and shift the shell header + sidebar
 *   + content down by --preview-bar-h (also set by 99-main.js).
 *
 *   z-index stack:
 *     #operator-preview-bar : 200  (always topmost)
 *     header strip / nav     : 110
 *     sidebar                :  90
 *     content                : default
 * ============================================================= */

/* Preview bar itself — pin to top of viewport in BOTH desktop and mobile.
   99-main.js sets display:flex on it; we own the positioning. */
html[data-design="v2"] body.app-v4.has-preview-bar #operator-preview-bar,
html[data-design="v2"] body.admin-v4.has-preview-bar #operator-preview-bar {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 200 !important;
}

@media (min-width: 641px) {
  /* Shift sidebars down */
  html[data-design="v2"] body.app-v4.has-preview-bar #app > nav.nav,
  html[data-design="v2"] body.admin-v4.has-preview-bar #admin-nav-tabs {
    top: var(--preview-bar-h, 52px) !important;
    height: calc(100vh - var(--preview-bar-h, 52px)) !important;
  }
  /* Shift header strips down — both app's --brand/--actions regions AND
     admin's nav.nav (which IS the header). Bare .mb-shell-header-region
     selector matches both modifier-classed app wrappers. */
  html[data-design="v2"] body.app-v4.has-preview-bar .mb-shell-header-region,
  html[data-design="v2"] body.admin-v4.has-preview-bar nav.nav {
    top: var(--preview-bar-h, 52px) !important;
  }
  /* Add the preview-bar height to content padding (app) and margin (admin). */
  html[data-design="v2"] body.app-v4.has-preview-bar #app.app-visible {
    padding-top: calc(var(--mb-shell-header-h) + var(--preview-bar-h, 52px)) !important;
  }
  html[data-design="v2"] body.admin-v4.has-preview-bar > .content,
  html[data-design="v2"] body.admin-v4.has-preview-bar main.content,
  html[data-design="v2"] body.admin-v4.has-preview-bar > div.content,
  html[data-design="v2"] body.admin-v4.has-preview-bar [id^="tab-"].content {
    margin-top: calc(var(--mb-shell-header-h) + var(--preview-bar-h, 52px)) !important;
  }
}

/* Mobile: preview bar pinned at top, nav slides down by --preview-bar-h
   (admin only — 64-mobile-app-shell hides .nav on app-v4 mobile). */
@media (max-width: 640px) {
  html[data-design="v2"] body.admin-v4.has-preview-bar nav.nav {
    top: var(--preview-bar-h, 52px) !important;
  }
}

/* =============================================================
 * Misc safety — neutralize stray glass/shadow from 45/47/62/68
 * that would otherwise leak through onto shell surfaces.
 * ============================================================= */
html[data-design="v2"] body.app-v4 nav.nav::before,
html[data-design="v2"] body.app-v4 nav.nav::after,
html[data-design="v2"] body.admin-v4 nav.nav::before,
html[data-design="v2"] body.admin-v4 nav.nav::after,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs::before,
html[data-design="v2"] body.admin-v4 #admin-nav-tabs::after {
  content: none !important;
  background: transparent !important;
  display: none !important;
}

/* =============================================================
 * Final app shell authority
 * 68-v11-brand.css still contains a light-mode sidebar experiment with
 * higher selector specificity. This app-only block matches that specificity
 * so the solid shell has one geometry source in modern/v11 light mode.
 * ============================================================= */
@media (min-width: 641px) {
  html[data-design="v2"][data-theme="light"] body.app-v4 #app.app-visible {
    display: block !important;
    width: 100% !important;
    min-width: 0 !important;
    min-height: 100vh !important;
    height: auto !important;
    padding-top: var(--mb-shell-header-h) !important;
    padding-left: var(--mb-shell-sidebar-w) !important;
    overflow-x: clip !important;
    box-sizing: border-box !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4.has-preview-bar #app.app-visible {
    padding-top: calc(var(--mb-shell-header-h) + var(--preview-bar-h, 52px)) !important;
    height: auto !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    right: auto !important;
    bottom: 0 !important;
    z-index: 90 !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    width: var(--mb-shell-sidebar-w) !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    gap: 0 !important;
    overflow: visible !important;
    border: 0 !important;
    border-right: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    background: var(--mb-shell-bg) !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4.has-preview-bar #app > nav.nav.mb-app-shell {
    top: var(--preview-bar-h, 52px) !important;
    height: calc(100vh - var(--preview-bar-h, 52px)) !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-header-region--brand,
  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-header-region--actions {
    position: fixed !important;
    top: 0 !important;
    height: var(--mb-shell-header-h) !important;
    background: var(--mb-shell-bg) !important;
    border: 0 !important;
    border-bottom: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    z-index: 110 !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    min-width: 0 !important;
    overflow: hidden !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4.has-preview-bar #app > nav.nav.mb-app-shell .mb-shell-header-region--brand,
  html[data-design="v2"][data-theme="light"] body.app-v4.has-preview-bar #app > nav.nav.mb-app-shell .mb-shell-header-region--actions {
    top: var(--preview-bar-h, 52px) !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-header-region--brand {
    left: 0 !important;
    width: var(--mb-shell-sidebar-w) !important;
    padding: 0 16px !important;
    border-right: 1px solid var(--mb-shell-divider) !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-header-region--actions {
    left: var(--mb-shell-sidebar-w) !important;
    right: 0 !important;
    width: auto !important;
    padding: 0 18px !important;
    justify-content: flex-start !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-sidebar-region {
    margin-top: var(--mb-shell-header-h) !important;
    width: 100% !important;
    height: calc(100vh - var(--mb-shell-header-h)) !important;
    padding: 10px 8px 14px !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4.has-preview-bar #app > nav.nav.mb-app-shell .mb-shell-sidebar-region {
    height: calc(100vh - var(--mb-shell-header-h) - var(--preview-bar-h, 52px)) !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-sidebar-region .nav-tabs {
    position: static !important;
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    gap: 2px !important;
    overflow: visible !important;
    background: transparent !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .nav-brand,
  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .nav-right {
    width: auto !important;
    min-width: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    background: transparent !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-header-region--actions .nav-right {
    margin-left: auto !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 8px !important;
    flex-shrink: 1 !important;
    max-width: 100% !important;
    overflow: hidden !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-header-region--actions .nav-right__actions {
    display: inline-flex !important;
    flex-direction: row !important;
    align-items: center !important;
    width: auto !important;
    min-width: 0 !important;
    gap: 6px !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > nav.nav.mb-app-shell .mb-shell-header-region--actions :is(#nav-settings-btn, #nav-logout-btn) {
    width: auto !important;
    min-width: 0 !important;
    height: 32px !important;
    min-height: 32px !important;
    padding: 0 12px !important;
    justify-content: flex-start !important;
    flex: 0 0 auto !important;
    white-space: nowrap !important;
  }

  html[data-design="v2"][data-theme="light"] body.app-v4 #app > .page {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 1680px !important;
    margin-left: auto !important;
    margin-right: auto !important;
    padding: 28px 30px 48px !important;
    box-sizing: border-box !important;
  }
}

/* =============================================================
 * Final admin shell authority
 * Mirrors the corrected app shell geometry while preserving admin's
 * separate header + sidebar DOM. The header and every admin content pane
 * use the same sidebar variable and no legacy margin-left/header width mix.
 * ============================================================= */
@media (min-width: 641px) {
  html[data-design="v2"][data-theme="light"] body.admin-v4 {
    background: var(--mb-shell-bg) !important;
    overflow-x: hidden !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell {
    position: fixed !important;
    top: 0 !important;
    left: var(--mb-shell-sidebar-w) !important;
    right: 0 !important;
    bottom: auto !important;
    width: auto !important;
    max-width: none !important;
    height: var(--mb-shell-header-h) !important;
    min-height: var(--mb-shell-header-h) !important;
    margin: 0 !important;
    padding: 0 18px !important;
    box-sizing: border-box !important;
    z-index: 110 !important;
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    min-width: 0 !important;
    overflow: hidden !important;
    border: 0 !important;
    border-bottom: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    background: var(--mb-shell-bg) !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    color: var(--mb-shell-text) !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell .mb-shell-header-region {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    width: 100% !important;
    min-width: 0 !important;
    height: 100% !important;
    overflow: hidden !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell .nav-brand {
    flex: 0 0 auto !important;
    width: auto !important;
    min-width: 0 !important;
    max-width: min(320px, 34vw) !important;
    height: var(--mb-shell-header-h) !important;
    min-height: 0 !important;
    margin: 0 10px 0 0 !important;
    padding: 0 12px 0 0 !important;
    display: flex !important;
    align-items: center !important;
    overflow: hidden !important;
    border: 0 !important;
    border-right: 1px solid var(--mb-shell-divider) !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell .nav-brand .mb-wordmark {
    min-width: 0;
    overflow: hidden;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell .nav-sep {
    flex: 1 1 auto !important;
    min-width: 12px !important;
    width: auto !important;
    height: 1px !important;
    margin: 0 !important;
    background: transparent !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell .nav-user {
    flex: 0 1 auto !important;
    min-width: 0 !important;
    max-width: 520px !important;
    margin-left: 0 !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: flex-end !important;
    gap: 8px !important;
    padding: 0 !important;
    overflow: hidden !important;
    border: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell #nav-email {
    flex: 1 1 auto !important;
    min-width: 0 !important;
    max-width: 180px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell :is(.theme-seg, .design-seg) {
    display: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 #admin-nav-tabs.mb-shell-sidebar {
    position: fixed !important;
    left: 0 !important;
    top: 0 !important;
    right: auto !important;
    bottom: 0 !important;
    width: var(--mb-shell-sidebar-w) !important;
    min-width: var(--mb-shell-sidebar-w) !important;
    max-width: var(--mb-shell-sidebar-w) !important;
    height: 100vh !important;
    min-height: 100vh !important;
    margin: 0 !important;
    padding: calc(var(--mb-shell-header-h) + 12px) 8px 14px !important;
    z-index: 90 !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 2px !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    border: 0 !important;
    border-right: 1px solid var(--mb-shell-border) !important;
    border-radius: 0 !important;
    background: var(--mb-shell-bg) !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 > .content,
  html[data-design="v2"][data-theme="light"] body.admin-v4 main.content,
  html[data-design="v2"][data-theme="light"] body.admin-v4 > div.content,
  html[data-design="v2"][data-theme="light"] body.admin-v4 [id^="tab-"].content {
    margin-left: var(--mb-shell-sidebar-w) !important;
    margin-top: var(--mb-shell-header-h) !important;
    width: auto !important;
    max-width: none !important;
    min-width: 0 !important;
    padding: 24px 28px 40px !important;
    box-sizing: border-box !important;
    background: transparent !important;
    overflow-x: clip !important;
  }
}

@media (min-width: 641px) and (max-width: 1180px) {
  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell .nav-badge {
    display: none !important;
  }

  html[data-design="v2"][data-theme="light"] body.admin-v4 nav.nav.mb-admin-shell #nav-email {
    max-width: 120px !important;
  }
}