.chat-panel {
  display: flex;
  flex-direction: column;
  /* Match the right-rail toolbar background so dark-mode doesn't show a
     lighter card behind the chat, and so the agent-card → pill morph
     doesn't flash a different colour mid-transition. */
  background: var(--bg-toolbar);
}

.chat-panel--embedded {
  height: 100%;
  width: 100%;
}

/* Top header: agent pill + close. */
.chat-panel__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1rem 0.75rem;
  flex-shrink: 0;
}

.chat-panel__agent-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
  padding: 0.4rem 0.75rem 0.4rem 0.4rem;
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  background: var(--mantine-color-body);
  cursor: pointer;
  transition:
    background 120ms ease-out,
    border-color 120ms ease-out;
  view-transition-name: stirling-agent;
}

/* Match the active-tool morph timing for a consistent rail feel. */
::view-transition-group(stirling-agent),
::view-transition-old(stirling-agent),
::view-transition-new(stirling-agent) {
  animation-duration: 220ms;
  animation-timing-function: cubic-bezier(0.32, 0.72, 0, 1);
}

.chat-panel__agent-pill:hover {
  background: var(--mantine-color-default-hover);
}

.chat-panel__agent-pill-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 9999px;
  background: var(--mantine-color-blue-light);
  color: var(--mantine-color-blue-filled);
  flex-shrink: 0;
  position: relative;
}

/* Running / in-progress status dot, anchored to the agent pill icon. */
.agent-status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mantine-color-blue-5);
  border: 1.5px solid var(--mantine-color-body);
  animation: agent-dot-pulse 2.4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes agent-dot-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

@media (prefers-reduced-motion: reduce) {
  .agent-status-dot {
    animation: none;
  }
}

.chat-panel__agent-pill--loading {
  border-color: color-mix(
    in srgb,
    var(--mantine-color-blue-5) 60%,
    var(--border-subtle)
  );
}

[data-mantine-color-scheme="dark"] .chat-panel__agent-pill--loading {
  border-color: color-mix(
    in srgb,
    var(--mantine-color-blue-4) 55%,
    var(--border-subtle)
  );
}

/* Dark-mode: let the pill blend into the rail. Just a thin border, no fill —
   so it doesn't read as a clashing lighter card on the dark toolbar. */
[data-mantine-color-scheme="dark"] .chat-panel__agent-pill {
  background: transparent;
  border-color: var(--border-subtle);
}

[data-mantine-color-scheme="dark"] .chat-panel__agent-pill:hover {
  background: rgba(255, 255, 255, 0.04);
}

[data-mantine-color-scheme="dark"] .chat-panel__agent-pill-icon {
  background: color-mix(
    in srgb,
    var(--mantine-color-blue-filled) 18%,
    transparent
  );
  color: var(--mantine-color-blue-3, var(--mantine-color-blue-filled));
}

/* Same treatment for the input pill and quick-action cards. */
[data-mantine-color-scheme="dark"] .chat-panel-input {
  background: transparent;
  box-shadow:
    0 0 0 1px var(--border-subtle),
    0 6px 16px rgba(0, 0, 0, 0.25);
}

[data-mantine-color-scheme="dark"] .chat-panel-input:focus-within {
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--mantine-color-blue-3) 40%, transparent),
    0 8px 22px color-mix(in srgb, var(--mantine-color-blue-6) 18%, transparent);
}

[data-mantine-color-scheme="dark"] .chat-quick-action {
  background: transparent;
}

[data-mantine-color-scheme="dark"] .chat-quick-action:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--border-subtle);
}

.chat-panel__agent-pill-label {
  font-size: 0.95rem;
  font-weight: 600;
  flex: 1;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-panel-messages {
  flex: 1;
  min-height: 0;
}

/* Quick action cards above the input. */
.chat-panel__quick-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.75rem 0.75rem 0.25rem;
  flex-shrink: 0;
}

.chat-panel__quick-actions-label {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 0.25rem;
  margin-bottom: 0.1rem;
}

/* File pills shown above the quick actions when files are loaded. */
.chat-file-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.chat-file-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  max-width: 11rem;
  padding: 0.2rem 0.35rem 0.2rem 0.45rem;
  border: 1px solid var(--mantine-color-blue-light);
  border-radius: 9999px;
  background: var(--mantine-color-blue-light);
  color: var(--mantine-color-blue-filled);
  font-size: 0.8rem;
  font-weight: 500;
  line-height: 1.1;
}

.chat-file-pill__icon {
  flex-shrink: 0;
}

.chat-file-pill__label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-file-pill__remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  padding: 0;
  border: none;
  border-radius: 9999px;
  background: transparent;
  color: inherit;
  cursor: pointer;
  opacity: 0.7;
  transition:
    background 120ms ease-out,
    opacity 120ms ease-out;
}

.chat-file-pill__remove:hover {
  background: var(--mantine-color-default-hover);
  opacity: 1;
}

.chat-file-pill--more {
  background: transparent;
  border: 1px dashed var(--border-subtle);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem 0.55rem;
}

.chat-file-pill--more:hover {
  background: var(--mantine-color-default-hover);
}

.chat-quick-action {
  display: block;
  width: 100%;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-subtle);
  border-radius: 0.65rem;
  background: var(--mantine-color-body);
  transition:
    background 120ms ease-out,
    border-color 120ms ease-out;
}

.chat-quick-action:hover {
  background: var(--mantine-color-default-hover);
  border-color: var(--mantine-color-default-border);
}

.chat-quick-action__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  background: var(--mantine-color-blue-light);
  color: var(--mantine-color-blue-filled);
  flex-shrink: 0;
}

/* Input area: textarea on top row, action icons on bottom row. */
.chat-panel-input {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.85rem 1rem 0.75rem;
  margin: 0.75rem 0.75rem 1rem;
  border: none;
  border-radius: 1.1rem;
  background: var(--mantine-color-body);
  flex-shrink: 0;
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.04),
    0 4px 14px rgba(15, 23, 42, 0.08);
  transition: box-shadow 160ms ease-out;
}

.chat-panel-input:focus-within {
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--mantine-color-blue-6) 20%, transparent),
    0 6px 18px color-mix(in srgb, var(--mantine-color-blue-6) 12%, transparent);
}

/* Kill the Mantine Textarea's own border/outline — the wrapper owns the chrome. */
.chat-panel-input__field,
.chat-panel-input__field:focus,
.chat-panel-input__field:focus-visible {
  font-size: 0.95rem;
  padding: 0.15rem 0 !important;
  background: transparent !important;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
}

.chat-panel-input__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Message layout */
.chat-message {
  display: flex;
}

.chat-message-user {
  justify-content: flex-end;
  margin: 0.2rem 0;
}

.chat-message-user__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  max-width: 85%;
}

.chat-message-assistant {
  justify-content: flex-start;
}

/* Hover action row — copy, like, timestamp */
.chat-message-actions {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  margin-top: 0.3rem;
  opacity: 0;
  transition: opacity 120ms ease-out;
  pointer-events: none;
}

.chat-message:hover .chat-message-actions,
.chat-message-actions:focus-within {
  opacity: 1;
  pointer-events: auto;
}

.chat-message-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.5rem;
  height: 1.5rem;
  padding: 0;
  border: none;
  border-radius: 0.375rem;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition:
    background 100ms ease-out,
    color 100ms ease-out;
}

.chat-message-action-btn:hover {
  background: var(--mantine-color-default-hover);
  color: var(--mantine-color-text);
}

.chat-message-action-btn--active {
  color: var(--mantine-color-blue-filled);
}

.chat-message-timestamp {
  font-size: 0.7rem;
  color: var(--text-muted);
  padding: 0 0.25rem;
  white-space: nowrap;
}

/* Bubble styling — user only */

.chat-bubble {
  width: fit-content;
  max-width: 100%;
}

.chat-bubble-user {
  background: var(--mantine-color-blue-filled) !important;
  color: white !important;
}

.chat-bubble-user * {
  color: white !important;
}

/* Assistant messages: no bubble, free-flowing with side padding */
.chat-bubble-assistant {
  width: 100%;
  padding: 0 0.5rem;
  font-size: var(--mantine-font-size-sm);
}

.chat-bubble-assistant p {
  margin: 0 0 0.5em;
}

.chat-bubble-assistant p:last-child {
  margin-bottom: 0;
}

/* ─── Progress step log ─────────────────────────────────────────────────── */

/*
 * Shown while the AI is working. Each step slides in from below as events
 * arrive; the active (last) step is full-opacity with a pulsing icon, and
 * earlier completed steps are dimmed. Only the most-recent N steps are
 * rendered — there is no scrollable list.
 */

.chat-progress-log {
  display: flex;
  flex-direction: column;
  padding: 0.15rem 0.5rem 0.35rem;
  /* No gap — the connector line div provides the inter-step spacing. */
}

.chat-progress-step {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  /*
   * Use color rather than opacity for past-step dimming so the connector
   * line (a sibling element inside __left, not a text node) is NOT affected
   * and stays clearly visible. currentColor flows into SVG icon fills;
   * color inherits into the label span automatically.
   */
  color: var(--text-muted);
  transition: color 250ms ease-out;
  animation: chat-step-enter 300ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

/*
 * Active step: white text on dark mode so currentColor feeds directly into
 * the StirlingLogoAnimated SVG paths and the label at the same time.
 * Light-mode falls back to the default text colour so it's not invisible.
 */
/* Active step: icon and label are coloured independently so the logo can be
   blue while the text uses the normal text colour. */
.chat-progress-step--active .chat-progress-step__icon {
  color: var(--mantine-color-blue-filled);
}

.chat-progress-step--active .chat-progress-step__label {
  color: var(--mantine-color-text);
}

[data-mantine-color-scheme="dark"]
  .chat-progress-step--active
  .chat-progress-step__label {
  color: #ffffff;
}

.chat-progress-step__left {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 20px;
}

/* Icon cell — fixed height so the connector line aligns cleanly. */
.chat-progress-step__icon {
  width: 20px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  /* Inherits color from .chat-progress-step so currentColor flows into icons. */
}

/*
 * Connector line between steps. Not a child of the label so it is unaffected
 * by the step's color; it sits on its own and reads clearly against the
 * toolbar background.
 */
.chat-progress-step__line {
  width: 1px;
  height: 18px;
  background: var(--border-subtle);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Active step label — slightly larger, inherits the active color. */
.chat-progress-step__label {
  font-size: 0.875rem;
  padding-top: 3px;
  line-height: 1.35;
}

/* Past step labels — a touch smaller so the active row reads as the primary. */
.chat-progress-step:not(.chat-progress-step--active)
  .chat-progress-step__label {
  font-size: 0.8rem;
  padding-top: 4px;
}

/*
 * Wrapper that scales a registry tool icon (LocalIcon, typically 1.5rem/24px)
 * down to fit the 20px icon column. Transform does not affect layout, so the
 * parent overflow:hidden clips the un-scaled footprint cleanly.
 */
.chat-step-icon-scaled {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.75);
  transform-origin: center;
  flex-shrink: 0;
}

/* Entry: steps slide up from a few pixels below their final position. */
@keyframes chat-step-enter {
  from {
    transform: translateY(7px);
  }
  to {
    transform: translateY(0);
  }
}

/* ─── Completed progress log dropdown ──────────────────────────────────── */

/*
 * Shown above each completed assistant turn. The toggle displays a small
 * "Ran for X seconds" label; expanding reveals the full ordered step list
 * for that turn in a compact, read-only format.
 */

.chat-completed-log {
  margin-bottom: 0.55rem;
}

.chat-completed-log__toggle {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.25rem 0.1rem 0.1rem;
  border-radius: 0.35rem;
  color: var(--text-muted);
  transition: background 120ms ease-out;
}

.chat-completed-log__toggle:hover {
  background: var(--mantine-color-default-hover);
}

.chat-completed-log__steps {
  display: flex;
  flex-direction: column;
  padding: 0.35rem 0.4rem 0.2rem 0.25rem;
  margin-top: 0.2rem;
}

/* In the completed log every step is a past step — no active highlighting,
   no entry animation (the content is static once opened). */
.chat-completed-log__steps .chat-progress-step {
  animation: none;
}

/* Tighten the icon and connector dimensions for the denser historical view. */
.chat-completed-log__steps .chat-progress-step__icon {
  height: 20px;
}

.chat-completed-log__steps .chat-progress-step__line {
  height: 14px;
}

.chat-completed-log__steps .chat-progress-step__label {
  font-size: 0.775rem;
  padding-top: 2px;
}

/* Legacy thinking indicator (kept in case any other code references it). */
.chat-thinking {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.125rem 0.5rem;
  color: var(--mantine-color-blue-filled);
}

@media (prefers-reduced-motion: reduce) {
  .chat-progress-step {
    animation: none;
    transition: none;
  }
}

/* ─── Stirling logo thinking animation ─────────────────────────────────── */

.stirling-thinking__path-right {
  animation: stirling-orbit-right 2s ease-in-out infinite;
}

.stirling-thinking__path-left {
  animation: stirling-orbit-left 2s ease-in-out infinite;
}

@keyframes stirling-orbit-right {
  0%,
  100% {
    transform: translate(0, 0);
    opacity: 0.5;
  }
  25% {
    transform: translate(-1px, -5px);
    opacity: 0.45;
  }
  50% {
    transform: translate(-6px, 0);
    opacity: 0.9;
  }
  75% {
    transform: translate(-1px, 5px);
    opacity: 0.55;
  }
}

@keyframes stirling-orbit-left {
  0%,
  100% {
    transform: translate(0, 0);
    opacity: 1;
  }
  25% {
    transform: translate(1px, 5px);
    opacity: 0.85;
  }
  50% {
    transform: translate(6px, 0);
    opacity: 0.5;
  }
  75% {
    transform: translate(1px, -5px);
    opacity: 0.85;
  }
}

@media (prefers-reduced-motion: reduce) {
  .stirling-thinking__path-right {
    animation: none;
    opacity: 0.5;
  }
  .stirling-thinking__path-left {
    animation: none;
    opacity: 1;
  }
}