/* Sidebar "Sessions" section: header + new button + session list rows */

.sidebar__section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline-start: 0.5rem;
  margin-block: 0.5rem 0.25rem;
}

.sidebar__section-header .sidebar__section-label {
  margin-block: 0;
}

.sidebar[data-collapsed="true"] .sidebar__section-header {
  justify-content: center;
  padding-inline-start: 0;
}

/* Collapsed, the label is only faded out (layout.css) -- it would still
   take its width here and push the + off-centre, so take it out of the
   header's layout too. */
.sidebar[data-collapsed="true"] .sidebar__section-header .sidebar__section-label {
  display: none;
}

.sidebar__section-actions {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

.session-list {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  /* The one scrolling part of the sidebar (see layout.css's .sidebar). */
  flex: 1 1 auto;
  min-block-size: 0;
  overflow-y: auto;
  margin-inline-end: -0.375rem;
  padding-inline-end: 0.375rem;
}

/* Collapsed: a narrow rail of icons is no way to tell sessions apart, so the
   list is hidden; "Show sessions" (with how many there are) expands the
   sidebar to pick one. */
.sidebar[data-collapsed="true"] .session-list {
  display: none;
}

.sidebar__show-sessions {
  display: none;
  position: relative;
  align-self: center;
  color: var(--color-text-muted);
}

.sidebar[data-collapsed="true"] .sidebar__show-sessions {
  display: inline-flex;
}

.sidebar__show-sessions:hover {
  color: var(--color-text);
}

.sidebar__count {
  position: absolute;
  inset-block-start: -0.125rem;
  inset-inline-end: -0.25rem;
  min-inline-size: 1.125rem;
  padding: 0 0.3125rem;
  border-radius: 999px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 0.625rem;
  font-weight: 700;
  line-height: 1.125rem;
  text-align: center;
}

.sidebar__count:empty {
  display: none;
}

.session-list__empty {
  padding-inline: 0.625rem;
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar[data-collapsed="true"] .session-list__empty {
  opacity: 0;
}

/* Positioned so the row's "…" menu can open just below it (see .session-menu). */
.session-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.session-item__select {
  flex: 1;
  min-width: 0;
}

/* --- Per-session "…" menu (Rename / Export / Delete) ---------------
   One button per row instead of one per action: always visible (muted, so
   the list stays calm), and hidden with the labels when collapsed. */

.session-item__menu {
  flex: 0 0 auto;
}

.session-item__menu-btn {
  width: 1.75rem;
  height: 1.75rem;
  color: var(--color-text-muted);
}

.session-item__menu-btn:hover,
.session-item__menu-btn[aria-expanded="true"] {
  color: var(--color-text);
  background: var(--color-surface-alt);
}

.sidebar[data-collapsed="true"] .session-item__menu {
  display: none;
}

/* Opens below the row, aligned to its end edge (so it stays inside the
   sidebar), above whatever follows. */
.session-menu {
  position: absolute;
  inset-block-start: calc(100% + 0.125rem);
  inset-inline-end: 0;
  z-index: 20;
  min-inline-size: 11rem;
  padding: 0.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.session-menu[hidden] {
  display: none;
}

.session-menu__item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  inline-size: 100%;
  padding: 0.4375rem 0.625rem;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text);
  font: inherit;
  font-size: 0.875rem;
  text-align: start;
  white-space: nowrap;
  cursor: pointer;
}

.session-menu__item svg {
  flex: 0 0 auto;
  color: var(--color-text-muted);
}

.session-menu__item:hover,
.session-menu__item:focus-visible {
  background: var(--color-surface-alt);
  outline: none;
}

.session-menu__item--danger,
.session-menu__item--danger svg {
  color: var(--color-danger);
}

/* The active session is indicated by the accent text color alone (see
   .nav-item[aria-current="page"] in layout.css for the shared rule this
   overrides) -- no background fill, so the row reads as "this text is
   accent colour", not "this row has a shaded pill around it". */
.session-item__select[aria-current="page"] {
  background: transparent;
}

/* --- Rename mode (double-click a session title) --------------------- */

.session-item__rename {
  cursor: default;
}

.session-item__rename-input {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 0.125rem 0.375rem;
}

.session-item__rename-input:focus {
  outline: none;
}

/* --- Add session dialog (see js/session-add-dialog.js) --------------
   Chrome (overlay/dialog/hint/actions) is the shared .modal-* set in
   components.css; only the tabs and the name input are specific to it. */

.session-add__tabs {
  display: flex;
  gap: 0.25rem;
  margin-block-end: 0.875rem;
  border-block-end: 1px solid var(--color-border);
}

.session-add__tab {
  padding: 0.5rem 0.875rem;
  border: none;
  border-block-end: 2px solid transparent;
  margin-block-end: -1px;
  background: transparent;
  color: var(--color-text-muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.session-add__tab:hover {
  color: var(--color-text);
}

.session-add__tab[aria-selected="true"] {
  color: var(--color-accent);
  border-block-end-color: var(--color-accent);
}

.session-add__tab:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.session-add__panel[hidden] {
  display: none;
}

.session-new-modal__input {
  width: 100%;
  font: inherit;
  padding: 0.5rem 0.625rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  color: var(--color-text);
}

.session-new-modal__input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}