/*
 * Left-sidebar panel listing running terminal sessions. Each row shows
 * the session's real (program-published) title, a smaller line below it
 * with the latest output from a running coding agent, and an inline
 * shutdown button that fades in on hover; the header carries the panel
 * title and a "new terminal" button. Colors and spacing pull from
 * `--jp-*` custom properties so the panel tracks the active JupyterLab
 * theme.
 */

.jp-xtralab-Terminals {
  display: flex;
  flex-direction: column;
  min-width: 200px;
  overflow: hidden;
  background-color: var(--jp-layout-color1);
  color: var(--jp-ui-font-color1);
  font-size: var(--jp-ui-font-size1);
}

.jp-xtralab-Terminals-body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
}

.jp-xtralab-Terminals-header {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: var(--jp-border-width) solid var(--jp-border-color2);
}

.jp-xtralab-Terminals-title {
  margin: 0;
  font-size: var(--jp-ui-font-size0);
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--jp-ui-font-color1);
}

.jp-xtralab-Terminals-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 2px;
}

.jp-xtralab-Terminals-action {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 2px;
  color: var(--jp-ui-font-color2);
  cursor: pointer;
}

.jp-xtralab-Terminals-action:hover {
  background-color: var(--jp-layout-color2);
  color: var(--jp-ui-font-color1);
}

.jp-xtralab-Terminals-action:focus-visible {
  outline: var(--jp-border-width) solid var(--jp-brand-color1);
  outline-offset: -1px;
}

/*
 * "Shut down all" is disabled when there are no running terminals. Dim the
 * whole control with opacity rather than `color`: the stop glyph is an SVG
 * whose fill comes from its own `jp-icon3` class (not `currentColor`), so a
 * `color` change alone leaves the icon looking fully active — which is why the
 * button did not read as disabled.
 */
.jp-xtralab-Terminals-action:disabled {
  cursor: default;
  opacity: 0.4;
}

.jp-xtralab-Terminals-action:disabled:hover {
  background: transparent;
}

.jp-xtralab-Terminals-empty {
  margin: 0;
  padding: 12px;
  color: var(--jp-ui-font-color2);
}

.jp-xtralab-Terminals-list {
  flex: 1 1 auto;
  margin: 0;
  padding: 4px 0;
  overflow-y: auto;
  list-style: none;
}

.jp-xtralab-Terminals-item {
  display: flex;
  align-items: stretch;
  min-height: 28px;
}

.jp-xtralab-Terminals-item:hover {
  background-color: var(--jp-layout-color2);
}

/*
 * The main click target: terminal icon + the title/activity text block,
 * filling the row so the whole strip activates the session. The close button
 * sits to its right and intercepts its own clicks via the React handler.
 * Top-aligned so the icon sits on the title line when an activity line wraps
 * the row to a second line.
 */
.jp-xtralab-Terminals-item-activate {
  display: flex;
  flex: 1 1 auto;
  align-items: flex-start;
  gap: 6px;
  min-width: 0;
  padding: 5px 4px 5px 12px;
  background: transparent;
  border: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.jp-xtralab-Terminals-item-activate:focus-visible {
  outline: var(--jp-border-width) solid var(--jp-brand-color1);
  outline-offset: -2px;
}

/* Nudge the 16px icon down a touch so it lines up with the title's cap
 * height rather than the very top of the text block. */
.jp-xtralab-Terminals-item-icon {
  margin-top: 1px;
}

/* The title + activity column, between the icon and the close button. */
.jp-xtralab-Terminals-item-text {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
}

.jp-xtralab-Terminals-item-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/*
 * The latest line of agent output, shown under the title. Smaller and dimmer
 * than the title so it reads as secondary, and clamped to two lines with an
 * ellipsis so a long line can't stretch the row indefinitely.
 */
.jp-xtralab-Terminals-item-detail {
  display: -webkit-box;
  overflow: hidden;
  font-size: var(--jp-ui-font-size0);
  line-height: 1.3;
  color: var(--jp-ui-font-color3);
  text-overflow: ellipsis;
  overflow-wrap: anywhere;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/*
 * Close button. Hidden by default so the row reads as plain text; fades
 * in when the row is hovered or the button itself takes focus.
 */
.jp-xtralab-Terminals-item-close {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 24px;
  margin-right: 4px;
  background: transparent;
  border: none;
  color: var(--jp-ui-font-color2);
  cursor: pointer;
  opacity: 0;
  transition: opacity 80ms linear;
}

.jp-xtralab-Terminals-item-close:hover {
  color: var(--jp-ui-font-color1);
}

.jp-xtralab-Terminals-item-close:focus-visible {
  opacity: 1;
  outline: var(--jp-border-width) solid var(--jp-brand-color1);
  outline-offset: -2px;
}

/* Higher specificity than the bare-button rules above, so it comes
 * last to keep stylelint's no-descending-specificity rule happy. */
.jp-xtralab-Terminals-item:hover .jp-xtralab-Terminals-item-close {
  opacity: 1;
}

/* Keep the row/header icons at the standard 16px sidebar size. */
.jp-xtralab-Terminals-item svg,
.jp-xtralab-Terminals-action svg {
  width: 16px;
  height: 16px;
}

/*
 * The terminal that is currently the active widget in the main area — the
 * running-session counterpart of the file browser highlighting the open
 * document. It reuses the file listing's brand-color treatment so "this is
 * the focused terminal" reads at a glance, and the panel highlights nothing
 * while a notebook (or any non-terminal widget) holds the focus instead.
 * Driven from `widget.tsx` via the terminal tracker + the shell's current
 * widget.
 */
.jp-xtralab-Terminals-item.jp-mod-current {
  color: var(--jp-ui-inverse-font-color1);
  background-color: var(--jp-brand-color1);
}

/* Hovering the current row keeps the highlight rather than falling back to
 * the neutral hover background. */
.jp-xtralab-Terminals-item.jp-mod-current:hover {
  background-color: var(--jp-brand-color1);
}

/* Keep the activity line legible on the brand background: swap the dim
 * neutral for the inverse font color, held a touch lighter than the title so
 * it still reads as secondary. */
.jp-xtralab-Terminals-item.jp-mod-current .jp-xtralab-Terminals-item-detail {
  color: var(--jp-ui-inverse-font-color1);
  opacity: 0.85;
}

/*
 * Invert the monochrome terminal glyph against the brand background, exactly
 * as the file listing does for its selected rows. Colored agent logos carry
 * no selectable classes, so they keep their own colors.
 */
.jp-xtralab-Terminals-item.jp-mod-current .jp-icon-selectable[fill] {
  fill: #fff;
}

.jp-xtralab-Terminals-item.jp-mod-current .jp-icon-selectable-inverse[fill] {
  fill: var(--jp-brand-color1);
}

/* Keep the inline shutdown button legible on the brand background, including
 * while it is itself hovered. */
.jp-xtralab-Terminals-item.jp-mod-current .jp-xtralab-Terminals-item-close,
.jp-xtralab-Terminals-item.jp-mod-current
  .jp-xtralab-Terminals-item-close:hover {
  color: var(--jp-ui-inverse-font-color1);
}

/* Focus rings need a color that contrasts with the brand background. */
.jp-xtralab-Terminals-item.jp-mod-current
  .jp-xtralab-Terminals-item-activate:focus-visible,
.jp-xtralab-Terminals-item.jp-mod-current
  .jp-xtralab-Terminals-item-close:focus-visible {
  outline-color: var(--jp-layout-color1);
}