.app-frame {
  grid-template-columns: var(--nav-width) minmax(0, 1fr);
  background: var(--rox-black);
}

.app-frame.nav-collapsed {
  grid-template-columns: var(--nav-rail-width) minmax(0, 1fr);
}

.global-nav {
  grid-template-rows: 52px minmax(0, 1fr) auto;
  background: var(--rox-nav);
}

.brand-lockup {
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 7px;
  padding: 0 8px;
  background: var(--rox-nav);
}

.brand-logo-frame {
  width: 42px;
  height: 18px;
}

.brand-logo {
  width: 50px;
  opacity: 0.94;
}

.brand-lockup strong {
  color: var(--rox-ink);
  font-size: var(--type-label);
  font-weight: 620;
  letter-spacing: -0.01em;
}

.primary-nav {
  padding: 6px;
}

.nav-group {
  margin-bottom: 12px;
}

.nav-group-label {
  margin: 0 7px 4px;
}

.nav-footer {
  padding: 6px;
}

.engine-status {
  margin: 0 0 3px;
  padding: 6px 7px;
  background: transparent;
  border: 0;
  border-radius: 5px;
}

.engine-status span {
  margin-bottom: 2px;
  color: var(--rox-muted);
  font-size: var(--type-caption);
}

.engine-status strong {
  color: var(--rox-green);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
}

.nav-collapse {
  min-height: 28px;
  padding: 0 7px;
  color: var(--rox-muted);
  border-radius: 5px;
  font-size: var(--type-caption);
}

.studio-app {
  height: calc(100% - 12px);
  margin: 12px 12px 0;
  grid-template-rows: 68px 52px minmax(0, 1fr);
  background: var(--rox-canvas);
  border-radius: var(--radius-shell) var(--radius-shell) 0 0;
}

.topbar {
  grid-template-columns: minmax(280px, auto) minmax(140px, 1fr) auto;
  gap: 20px;
  padding: 0 18px;
  background: var(--rox-panel);
}

.document-kicker {
  margin-bottom: 4px;
}

.document-title-row {
  gap: 10px;
}

.document-title-row strong {
  font-size: var(--type-heading);
  font-weight: 620;
  letter-spacing: -0.018em;
}

.saved-label {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  color: var(--rox-body);
  background: var(--rox-control);
  border-radius: 5px;
  font-size: var(--type-caption);
  font-weight: 600;
}

.document-meta {
  color: var(--rox-muted);
  font-size: var(--type-label);
}

.review-control,
.workspace-actions {
  gap: 8px;
}

.workspacebar {
  grid-template-columns: auto minmax(120px, 1fr) auto;
  gap: 16px;
  padding: 0 12px 0 16px;
  background: var(--rox-nav);
}

.workspace-tabs {
  height: 100%;
}

.workspace-tabs button {
  min-height: 52px;
  padding: 0 13px;
}

.page-score {
  color: var(--rox-muted);
  font-family: var(--font-mono);
  font-size: var(--type-caption);
}

.studio-shell.pages-open {
  --pages-width: 176px;
}

.studio-shell.review-open {
  --review-width: var(--inspector-width);
}

.page-rail,
.inspector {
  background: var(--rox-nav);
}

.page-rail {
  border-radius: var(--radius-shell) 0 0 0;
}

.inspector {
  display: grid;
  grid-template-rows: 64px auto auto 52px auto minmax(0, 1fr);
}

.drawer-heading {
  min-height: 64px;
  height: 64px;
  padding: 0 16px;
  background: var(--rox-panel);
}

.drawer-heading > div {
  letter-spacing: 0;
  text-transform: none;
}

.drawer-heading strong {
  display: block;
  margin-top: 3px;
  color: var(--rox-ink);
  font-size: var(--type-title);
  font-weight: 620;
}

.review-brief {
  margin: 14px 14px 12px;
}

.quality-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 2px 16px 14px;
}

.inspector-primary-tabs {
  min-height: 52px;
  padding: 0 10px;
  background: var(--rox-panel);
}

.inspector-primary-tabs button {
  min-height: 52px;
  padding: 0 10px;
}

.inspector-tabs {
  min-height: 46px;
  gap: 6px;
  padding: 6px 12px;
  background: var(--rox-nav);
}

.inspector-tabs[hidden] {
  display: none;
}

.inspector-tabs button[hidden] {
  display: none;
}

.inspector-content {
  min-height: 0;
  height: auto;
  overflow-y: auto;
  padding: 12px 14px 18px;
}

.inspector-card,
.component-group,
.component-row,
.graphic-row,
.font-row,
.resolution-row,
.package-tree,
.text-row,
.tree-root,
.section-row {
  margin-bottom: 10px;
}

.inspector-empty {
  padding: 16px 2px;
  color: var(--rox-muted);
  font-size: var(--type-body);
  line-height: 1.5;
}

.workbench {
  background: var(--rox-canvas);
}

.stage-shell {
  padding: 24px;
  background: var(--rox-canvas);
}

.page-stage {
  background: #0f0f0f;
}

.app-frame.nav-collapsed .brand-lockup {
  display: flex;
  justify-content: center;
  padding: 0 4px;
}

.app-frame.nav-collapsed .brand-logo-frame {
  width: 38px;
}

.app-frame.nav-collapsed .brand-logo {
  width: 46px;
}

.app-frame.nav-collapsed .primary-nav {
  padding: 5px;
}

.app-frame.nav-collapsed .nav-group {
  margin-bottom: 8px;
}

.app-frame.nav-collapsed .nav-item {
  min-height: 34px;
  display: flex;
  justify-content: center;
  padding: 0;
}

.app-frame.nav-collapsed .nav-item > .ph {
  font-size: 17px;
}

.app-frame.nav-collapsed .nav-collapse {
  min-height: 32px;
  font-size: var(--type-caption);
}

@media (max-width: 1260px) {
  .app-frame {
    grid-template-columns: var(--nav-rail-width) minmax(0, 1fr);
  }

  .brand-lockup {
    display: flex;
    justify-content: center;
    padding: 0 4px;
  }

  .brand-logo-frame {
    width: 38px;
  }

  .brand-logo {
    width: 46px;
  }

  .brand-lockup > div,
  .environment-label,
  .nav-group-label,
  .nav-item > span,
  .engine-status {
    display: none;
  }

  .primary-nav {
    padding: 5px;
  }

  .nav-group {
    margin-bottom: 8px;
  }

  .nav-item {
    min-height: 34px;
    display: flex;
    justify-content: center;
    padding: 0;
  }

  .nav-item > .ph {
    font-size: 17px;
  }

  .nav-collapse {
    display: none;
  }

  .studio-shell.review-open {
    --review-width: min(410px, 42vw);
  }
}

@media (max-width: 900px) {
  .document-meta,
  .timer-button,
  .version-button {
    display: none;
  }

  .topbar {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .studio-shell.review-open {
    --review-width: min(390px, 52vw);
  }

  .quality-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 10px;
  }
}

@media (max-width: 680px) {
  .studio-app {
    height: 100%;
    margin: 0;
    grid-template-rows: 64px 48px minmax(0, 1fr);
    border-radius: 0;
  }

  .document-kicker,
  .saved-label,
  .page-score {
    display: none;
  }

  .document-title-row strong {
    font-size: var(--type-title);
  }

  .workspacebar {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .workspace-tabs button {
    min-height: 48px;
    padding: 0 9px;
    font-size: var(--type-label);
  }

  .studio-shell.review-open {
    --review-width: calc(100vw - var(--nav-rail-width));
  }

  .studio-shell.review-open .workbench,
  .studio-shell.review-open .page-rail {
    visibility: hidden;
  }
}