/* Shared research-view shell and toolbar placement. */

/* The container sits on the parent because a container cannot query itself. */
#main-content {
  container: view-shell / inline-size;
  min-height: 0;
}

.view-shell {
  display: grid;
  grid-template-columns: var(--view-sidebar-w) minmax(0, 1fr);
  width: 100%;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.view-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
  min-height: 0;
  padding: var(--space-3) var(--space-6) var(--space-4);
  overflow-y: auto;
  background: var(--surface-2);
  border-inline-end: 1px solid var(--line);
}

/* Sidebar tooltips stay within the 296px filter column. */
.view-sidebar [data-tip]::after { max-width: 230px; }

.view-main {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--surface);
}

.view-shell__sidebar-toggle {
  display: none;
  align-items: center;
  gap: var(--space-1-5);
  grid-column: 1 / -1;
  min-block-size: 32px;
  padding: var(--space-1-5) var(--space-3);
  color: var(--color-text-tertiary);
  background: var(--surface-2);
  border: none;
  border-block-end: 1px solid var(--line);
  font-family: inherit;
  font-size: var(--text-2xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  text-align: start;
  text-transform: uppercase;
  cursor: pointer;
}

.view-shell__sidebar-toggle:hover { color: var(--accent); }

.view-shell__sidebar-toggle-icon {
  flex: 0 0 auto;
  transform: rotate(90deg);
  transition: transform var(--transition-fast);
}

.view-shell--sidebar-collapsed .view-shell__sidebar-toggle-icon { transform: none; }

.research-toolbar {
  position: relative;
  z-index: var(--z-toolbar);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  flex: 0 0 auto;
  gap: var(--space-1) var(--space-2);
  min-width: 0;
  padding: var(--space-2) var(--space-3);
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.research-toolbar > .view-shell__sidebar-toggle {
  display: flex;
  grid-column: auto;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: var(--border-radius);
  letter-spacing: normal;
  text-transform: none;
}

.view-main .research-toolbar > .filter-strip {
  grid-column: 1 / -1;
  min-block-size: 26px;
  padding: var(--space-1) 0;
}

.view-shell--sidebar-collapsed { grid-template-columns: minmax(0, 1fr); }
.view-shell--sidebar-collapsed > .view-sidebar { display: none; }

/* Views whose drawing fills the remaining work area share this flex stage. */
.view-main--stacked {
  display: flex;
  flex-direction: column;
}

.view-main__stage {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
}

/* Below 900px the open filter and work area split the available height. Each
   region scrolls internally, including on short landscape viewports. */
@container view-shell (width < 900px) {
  .view-shell {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr) minmax(0, 1fr);
  }

  .view-shell--sidebar-collapsed { grid-template-rows: minmax(0, 1fr); }

  .view-sidebar {
    grid-row: 1;
    border-inline-end: none;
    border-block-end: 1px solid var(--line);
  }

  .view-main {
    grid-row: 2;
    height: auto;
  }

  .view-shell--sidebar-collapsed > .view-main { grid-row: 1; }
  .view-shell__sidebar-toggle { display: flex; }
}