/**
 * Page shell, app shell, sidebar, topbar — mobile-first; requires tokens.css first.
 */

.tb-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.tb-page__main {
  flex: 1;
  width: 100%;
  max-width: var(--tb-dash-content-max);
  margin-inline: auto;
  padding: var(--tb-space-4);
}

@media (min-width: 48rem) {
  .tb-page__main {
    padding: var(--tb-space-6);
  }
}

/* —— App shell (sidebar + content) —— */
.tb-app-shell {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
  min-height: 100dvh;
}

@media (min-width: 64rem) {
  .tb-app-shell {
    grid-template-columns: var(--tb-dash-sidebar-width) minmax(0, 1fr);
    grid-template-rows: 1fr;
    min-height: calc(100dvh - var(--tb-dash-topbar-height) - var(--tb-space-10));
  }
}

.tb-app-shell__sidebar {
  position: sticky;
  top: 0;
  z-index: var(--tb-z-sticky);
  min-height: auto;
  padding: var(--tb-space-4);
  background: var(--tb-color-bg-raised);
  border-bottom: 1px solid var(--tb-color-border-subtle);
}

@media (min-width: 64rem) {
  .tb-app-shell__sidebar {
    min-height: 100dvh;
    border-bottom: none;
    border-right: 1px solid var(--tb-color-border-subtle);
  }
}

.tb-app-shell__content {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* —— Topbar —— */
.tb-topbar {
  position: sticky;
  top: 0;
  z-index: var(--tb-z-sticky);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--tb-space-3);
  min-height: var(--tb-dash-topbar-height);
  padding: var(--tb-space-3) var(--tb-space-4);
  background: rgba(5, 10, 18, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--tb-color-border-subtle);
}

.tb-topbar__brand {
  font-weight: var(--tb-font-heavy);
  font-size: var(--tb-text-md);
  letter-spacing: var(--tb-tracking-tight);
  color: var(--tb-color-text-primary);
}

.tb-topbar__actions {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--tb-space-2);
}

/* —— Content width utilities —— */
.tb-content-narrow {
  max-width: 42rem;
  margin-inline: auto;
  width: 100%;
}

.tb-content-wide {
  max-width: var(--tb-dash-content-max);
  margin-inline: auto;
  width: 100%;
}

/* OCC dashboard: use full content width inside global shell */
.tb-page__main--occ {
  max-width: 100%;
  padding: var(--tb-space-3) var(--tb-space-4);
}

@media (min-width: 48rem) {
  .tb-page__main--occ {
    padding: var(--tb-space-4) var(--tb-space-5);
  }
}

/* OCC inner shell: dark rail + main column */
.tb-occ-shell {
  width: 100%;
  min-height: min(100dvh, 100%);
  border-radius: var(--tb-radius-lg);
  border: 1px solid var(--tb-color-border-subtle);
  background: linear-gradient(
    135deg,
    var(--tb-color-bg-raised) 0%,
    var(--tb-color-bg-inset) 55%,
    var(--tb-color-bg-base) 100%
  );
  overflow: hidden;
}

.tb-occ-sidebar {
  background: linear-gradient(180deg, var(--tb-color-bg-panel) 0%, var(--tb-color-bg-inset) 100%);
  display: flex;
  flex-direction: column;
  min-height: 14rem;
}

.tb-occ-sidebar__eyebrow {
  margin: 0 0 var(--tb-space-3);
  font-size: var(--tb-text-xs);
  font-weight: var(--tb-font-heavy);
  letter-spacing: var(--tb-tracking-wide);
  text-transform: uppercase;
  color: var(--tb-color-accent);
}

.tb-occ-sidebar__foot {
  margin-top: auto;
  padding-top: var(--tb-space-4);
  border-top: 1px solid var(--tb-color-border-subtle);
}

.tb-occ-sidebar__org {
  margin: 0 0 var(--tb-space-2);
  font-size: var(--tb-text-sm);
  font-weight: var(--tb-font-bold);
  color: var(--tb-color-text-primary);
}

.tb-occ-sidebar__status {
  display: flex;
  align-items: center;
  gap: var(--tb-space-2);
  margin: 0;
  font-size: var(--tb-text-xs);
  color: var(--tb-color-text-muted);
}

.tb-occ-sidebar__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--tb-color-status-green);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.45);
}

.tb-occ-content {
  padding: var(--tb-space-4) var(--tb-space-4) var(--tb-space-8);
  min-width: 0;
}

@media (min-width: 64rem) {
  .tb-occ-sidebar {
    display: flex;
    flex-direction: column;
    min-height: 100%;
  }
}

/* Inner workspace header (below global topbar) */
.tb-occ-workspace-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--tb-space-4);
  margin-bottom: var(--tb-space-5);
}

.tb-occ-workspace-header__icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--tb-radius-md);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border: 1px solid var(--tb-color-border-accent);
  background: var(--tb-color-accent-dim);
  color: var(--tb-color-accent);
  font-size: var(--tb-text-xl);
}

.tb-occ-workspace-header__text {
  flex: 1;
  min-width: min(100%, 12rem);
}

.tb-occ-workspace-header__title {
  margin: 0;
  font-size: var(--tb-text-2xl);
  font-weight: var(--tb-font-heavy);
  letter-spacing: var(--tb-tracking-tight);
  color: var(--tb-color-text-primary);
}

.tb-occ-workspace-header__subtitle {
  margin: var(--tb-space-2) 0 0;
  font-size: var(--tb-text-sm);
  color: var(--tb-color-text-secondary);
  line-height: var(--tb-leading-snug);
}

.tb-occ-workspace-header__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--tb-space-2);
}

.tb-occ-banner {
  margin-bottom: var(--tb-space-6);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}