/* ---------- App shell (AppShell variant="industrial") ---------- */
.app {
  display: grid;
  grid-template-columns: var(--ns-sidebar-w) minmax(0, 1fr);
  grid-template-rows: var(--ns-topbar-h) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  grid-row: 1 / span 2;
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--ns-shell);
  color: var(--ns-shell-text);
  z-index: var(--ns-z-sticky);
}
.sidebar__brand {
  display: flex;
  align-items: center;
  height: var(--ns-topbar-h);
  padding: 0 var(--ns-space-6);
  border-bottom: 1px solid var(--ns-shell-line);
  flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ns-shell-strong); }
.brand:hover { color: var(--ns-shell-strong); }
.brand__tile { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; border-radius: var(--ns-r-sm); background: var(--ns-brand-tile); flex-shrink: 0; }
.brand__mark { display: block; }
.brand__word { display: flex; flex-direction: column; line-height: 1.05; }
.brand__name { font-size: 15px; font-weight: var(--ns-fw-regular); letter-spacing: .01em; }
.brand__name b { font-weight: var(--ns-fw-semibold); }
.brand__tag { font-size: 8.5px; font-weight: var(--ns-fw-semibold); letter-spacing: .3em; color: var(--ns-brand-cyan); }

.sidebar__nav { flex: 1; overflow-y: auto; padding: var(--ns-space-5) 0; }
.sidebar__app { padding: var(--ns-space-2) var(--ns-space-7) 10px; font-size: 13px; font-weight: var(--ns-fw-semibold); color: var(--ns-shell-strong); }
.sidebar__separator { height: 1px; margin: 10px var(--ns-space-6) 0; background: var(--ns-shell-line); }
.sidebar__section {
  padding: var(--ns-space-5) var(--ns-space-7) var(--ns-space-3);
  font-size: var(--ns-fs-overline); font-weight: var(--ns-fw-semibold);
  letter-spacing: var(--ns-ls-overline); text-transform: uppercase;
  color: var(--ns-shell-muted);
}
.sidebar__link {
  position: relative;
  display: flex; align-items: center; gap: 10px;
  height: 36px; margin: 0 var(--ns-space-4); padding: 0 var(--ns-space-5);
  border-radius: var(--ns-r-sm);
  color: var(--ns-shell-text); font-size: 13px; font-weight: var(--ns-fw-medium);
  transition: background var(--ns-t-fast), color var(--ns-t-fast);
}
.sidebar__link:hover { background: var(--ns-shell-2); color: var(--ns-shell-strong); }
.sidebar__link.is-active { background: var(--ns-shell-2); color: var(--ns-shell-strong); }
.sidebar__link.is-active::before {
  content: ""; position: absolute; left: calc(var(--ns-space-4) * -1); top: 8px; bottom: 8px;
  width: 2px; background: var(--ns-primary);
}
.sidebar__footer {
  display: flex; align-items: center; gap: 10px;
  padding: 14px var(--ns-space-7);
  border-top: 1px solid var(--ns-shell-line);
}
.sidebar__footer b { display: block; font-size: 12px; font-weight: var(--ns-fw-medium); }
.sidebar__footer small { display: block; font-size: 11px; color: var(--ns-shell-muted); }

.topbar {
  position: sticky; top: 0; z-index: var(--ns-z-sticky);
  display: flex; align-items: center; justify-content: space-between; gap: var(--ns-space-6);
  height: var(--ns-topbar-h); padding: 0 var(--ns-space-8);
  background: var(--ns-surface); border-bottom: 1px solid var(--ns-line);
}
.topbar__tools { display: flex; align-items: center; gap: var(--ns-space-5); }
.topbar .topbar__menu-btn { display: none; }
.topbar__status { display: flex; flex-direction: column; line-height: 1.2; }
.topbar__status small { font-size: 10px; font-weight: var(--ns-fw-semibold); letter-spacing: var(--ns-ls-overline); text-transform: uppercase; color: var(--ns-muted); }
.topbar__status strong { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: var(--ns-fw-semibold); }

.workspace { min-width: 0; padding: var(--ns-space-8); }
.page { display: flex; flex-direction: column; gap: var(--ns-space-6); max-width: var(--ns-content-max); margin: 0 auto; min-width: 0; }

/* ---------- Page header ---------- */
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--ns-space-8); flex-wrap: wrap; }
.page-head__copy { display: flex; flex-direction: column; gap: var(--ns-space-2); min-width: 0; }
.page-head__title { font-size: var(--ns-fs-title); line-height: var(--ns-lh-title); font-weight: var(--ns-fw-semibold); }
.page-head__subtitle { color: var(--ns-text-2); }
.page-head__actions { display: flex; align-items: center; gap: var(--ns-space-4); flex-wrap: wrap; }
.page-head__meta { display: flex; align-items: center; gap: 10px; font-family: var(--ns-font-mono); font-size: 12px; flex-wrap: wrap; }
.page-head__meta > span { display: inline-flex; align-items: center; gap: var(--ns-space-2); }

/* ---------- Context bar ---------- */
.ctxbar {
  display: flex; flex-direction: column;
  background: var(--ns-surface); border: 1px solid var(--ns-line); border-radius: var(--ns-r-md);
}
.ctxbar__row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--ns-space-5);
  min-height: var(--ns-ctxbar-h); padding: var(--ns-space-4) var(--ns-space-5);
  flex-wrap: wrap;
}
.ctxbar__row + .ctxbar__row { min-height: 40px; border-top: 1px solid var(--ns-line); background: var(--ns-surface-2); border-radius: 0 0 var(--ns-r-md) var(--ns-r-md); }
.ctxbar__group { display: flex; align-items: center; gap: var(--ns-space-4); flex-wrap: wrap; min-width: 0; }

/* ---------- Grids ---------- */
.grid { display: grid; gap: var(--ns-space-6); min-width: 0; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--side-320 { grid-template-columns: minmax(0, 1fr) 320px; }
.grid--nav { grid-template-columns: 224px minmax(0, 1fr); align-items: start; }
.grid > * { min-width: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1279px) {
  .grid--side-320 { grid-template-columns: minmax(0, 1fr); }
  .grid--nav { grid-template-columns: minmax(0, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1023px) {
  .app { grid-template-columns: minmax(0, 1fr); }
  .sidebar {
    position: fixed; inset: 0 auto 0 0; width: var(--ns-sidebar-w);
    transform: translateX(-100%); transition: transform var(--ns-t-panel);
    z-index: var(--ns-z-drawer);
  }
  .app.is-nav-open .sidebar { transform: none; box-shadow: var(--ns-shadow-drawer); }
  .app.is-nav-open .nav-scrim { display: block; }
  .topbar { grid-column: 1; padding: 0 var(--ns-space-6); }
  .topbar .topbar__menu-btn { display: inline-flex; }
  .workspace { padding: var(--ns-space-6); }
  .grid--2 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 767px) {
  .topbar__status, .topbar__user-name { display: none; }
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .page-head { align-items: flex-start; }
}

.nav-scrim { display: none; position: fixed; inset: 0; background: var(--ns-backdrop); z-index: calc(var(--ns-z-drawer) - 1); }