/* Structured transcript styling, ported from src/styles.css's "structured
   view (#140)" block for the React pane (#246). The class names are the
   contract shared with docs/STRUCTURED-VIEW.md's row kinds; the components in
   this directory emit exactly these. Pane chrome (header, title, disconnect)
   is not here — like TerminalPane, StructuredPane renders the body only and
   whatever composes it owns the header.

   Hierarchy is deliberate: the approval is the loudest thing on screen, tool
   rows are quiet cards, and the agent's prose carries the reading weight. */

.structured-config {
  position: relative;
  flex: 0 0 40px;
}

.structured-config-trigger {
  width: 40px;
  height: 40px;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0;
  border: 0;
  border-radius: var(--r-2);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.structured-config-trigger svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
}

.structured-config-trigger:hover,
.structured-config-trigger[aria-expanded="true"] {
  color: var(--ink);
  background: var(--surface-3);
}

.structured-config-trigger:focus-visible,
.structured-config-select:focus-visible,
.structured-config-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.structured-config-menu {
  position: absolute;
  z-index: 20;
  bottom: calc(100% + var(--sp-2));
  right: 0;
  width: min(320px, 86vw);
  padding: var(--sp-2);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  background: var(--surface);
  box-shadow: var(--shadow-2);
}

.structured-config-row {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) minmax(0, 1.6fr);
  align-items: center;
  gap: var(--sp-3);
  min-height: 34px;
  padding: var(--sp-1) var(--sp-2);
  color: var(--ink);
  font-size: var(--fs-12);
}

.structured-config-row + .structured-config-row {
  border-top: 1px solid var(--border);
}

.structured-config-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.structured-config-select {
  min-width: 0;
  height: 28px;
  padding: 0 var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  background: var(--surface-2);
  color: var(--ink);
  font: inherit;
}

.structured-config-toggle {
  justify-self: end;
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
}

.structured-body {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
}

.structured-pane,
.structured-input {
  font-family: var(--font-sans);
}

.st-row-agent code,
.st-tool-text,
.st-tool-detail pre,
.st-diff,
.st-approval-path {
  font-family: var(--font-mono);
}

.structured-main {
  min-width: 0;
  min-height: 0;
  max-width: 820px;
  margin-inline: auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
}

.structured-scroll {
  flex: 1 1 auto;
  min-height: 0;
  min-width: 0;
  overflow-y: auto;
}

.structured-rows {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.structured-activity {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  min-height: 30px;
  padding: var(--sp-1) var(--sp-3);
  color: var(--muted);
  font-size: var(--fs-11);
  font-variant-numeric: tabular-nums;
}

.structured-activity[hidden] {
  display: none;
}

.structured-activity-pulse {
  position: relative;
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--live);
  box-shadow: 0 0 0 0 var(--live-glow);
  animation: structured-thinking 1.6s ease-out infinite;
}

@keyframes structured-thinking {
  50% {
    box-shadow: 0 0 0 5px transparent;
  }
}

/* every transcript row carries its own layout; none of them are cards */
.st-row {
  display: flex;
  gap: var(--sp-3);
  padding: var(--sp-3);
  min-width: 0;
}

.st-body {
  flex: 1 1 auto;
  min-width: 0;
}

/* User turns read as compact chat bubbles while the padded row remains the
   full hover/copy target. */
.st-row-user {
  justify-content: flex-end;
}

.st-row-user .st-body {
  flex: 0 1 auto;
  max-width: min(86%, 72ch);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-2);
  background: var(--surface-3);
}

.st-row-user:hover {
  background: var(--surface-2);
}

/* Queued messages: optimistic user bubbles, not yet sent. */
.st-row-queued {
  justify-content: flex-end;
  pointer-events: none;
}

.st-row-queued .st-body {
  flex: 0 1 auto;
  max-width: min(86%, 72ch);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-2);
  background: var(--surface-3);
  opacity: 0.45;
  filter: blur(0.5px);
}

.st-user-text {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.st-user-image {
  display: block;
  max-width: min(100%, 480px);
  max-height: 360px;
  margin-top: var(--sp-2);
  border-radius: var(--r-1);
  object-fit: contain;
}

/* agent prose: no card, no background — plain text is the point */
.st-row-agent .st-body p {
  margin: 0 0 var(--sp-2);
  overflow-wrap: anywhere;
}

.st-row-agent .st-body p:last-child {
  margin-bottom: 0;
}

.st-row-agent .st-body > :first-child {
  margin-top: 0;
}

.st-row-agent .st-body > :last-child {
  margin-bottom: 0;
}

.st-row-agent .st-body h1,
.st-row-agent .st-body h2,
.st-row-agent .st-body h3,
.st-row-agent .st-body h4 {
  margin: var(--sp-4) 0 var(--sp-2);
  color: var(--ink);
  font-size: var(--fs-14);
  line-height: 1.35;
}

.st-row-agent .st-body ul,
.st-row-agent .st-body ol {
  margin: var(--sp-2) 0;
  padding-left: var(--sp-5);
}

.st-row-agent .st-body li + li {
  margin-top: var(--sp-1);
}

.st-row-agent .st-body pre {
  margin: var(--sp-2) 0;
  padding: var(--sp-3);
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  background: var(--surface-2);
}

.st-row-agent .st-body pre code {
  padding: 0;
  border: 0;
  background: transparent;
}

.st-row-agent .st-body a {
  color: var(--ink);
  text-decoration-color: var(--border-strong);
  text-underline-offset: 2px;
}

.st-markdown-table-wrap {
  max-width: 100%;
  margin: var(--sp-2) 0;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
}

.st-row-agent table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-12);
}

.st-row-agent th,
.st-row-agent td {
  padding: var(--sp-2) var(--sp-3);
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}

.st-row-agent th {
  color: var(--ink);
  background: var(--surface-2);
  font-weight: 600;
}

.st-row-agent tr:last-child td {
  border-bottom: 0;
}

.st-row-agent code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  padding: 0 3px;
  font-size: 0.92em;
}

.st-row-thought {
  color: var(--faint);
  font-size: var(--fs-12);
  line-height: 1.4;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.st-row-notice {
  color: var(--faint);
  font-size: var(--fs-12);
}

.st-turn-meta {
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0 var(--sp-3) var(--sp-2);
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--r-1);
  color: var(--faint);
  font-size: var(--fs-11);
  font-variant-numeric: tabular-nums;
}

.st-turn-meta:hover {
  background: var(--surface-2);
  color: var(--muted);
}

.st-turn-meta-dot {
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--live);
}

.st-turn-meta-cancelled .st-turn-meta-dot {
  background: var(--warn);
}

.st-turn-meta-failed .st-turn-meta-dot {
  background: var(--danger);
}

.st-copyable {
  position: relative;
  border-radius: var(--r-1);
  cursor: copy;
  transition: background var(--dur-fast) var(--ease-out);
}

.st-copyable::after {
  content: none;
  position: absolute;
  top: var(--sp-1);
  right: var(--sp-1);
  padding: 1px var(--sp-1);
  border-radius: var(--r-1);
  background: var(--surface-3);
  color: var(--faint);
  font-size: var(--fs-11);
  font-style: normal;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.st-copyable:focus-visible {
  background: var(--surface-2);
  outline: none;
}

@media (hover: hover) {
  .st-copyable:hover {
    background: var(--surface-2);
  }

  .st-copyable:hover::after {
    content: "copy";
    opacity: 1;
  }

  .st-copyable[data-copy-state="copied"]:hover::after {
    content: "copied";
    color: var(--live);
  }

  .st-copyable[data-copy-state="error"]:hover::after {
    content: "copy failed";
    color: var(--danger);
  }
}

/* tool rows: bordered, compact, deliberately not lifted */
.st-tool {
  flex: 1 1 auto;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  min-width: 0;
}

.st-tool-head {
  appearance: none;
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  min-width: 0;
  transition: background var(--dur-fast) var(--ease-out);
}

.st-tool-head:hover {
  background: var(--surface-2);
}

.st-row-tool:hover,
.st-row-approval:hover {
  background: var(--surface-2);
}

.st-tool-glyph {
  width: 16px;
  flex: 0 0 auto;
  text-align: center;
  color: var(--faint);
}

.st-tool-name {
  font-weight: 500;
  flex: 0 0 auto;
}

.st-tool-arg {
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  text-align: left;
}

.st-tool-meta {
  margin-left: auto;
  flex: 0 0 auto;
  font-size: var(--fs-11);
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}

.st-tool-meta-running {
  color: var(--live);
}

.st-tool-meta-failed {
  color: var(--danger);
}

.st-tool-out {
  border-top: 1px solid transparent;
}

.st-disclosure {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition:
    grid-template-rows var(--dur) var(--ease-out),
    opacity var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.st-disclosure.is-expanded {
  grid-template-rows: 1fr;
  opacity: 1;
}

.st-disclosure-clip {
  min-height: 0;
  overflow: hidden;
}

.st-tool-out.is-expanded {
  border-top-color: var(--border);
}

.st-tool-out .st-disclosure-inner {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
}

/* `display: flex` above outranks the UA sheet's `[hidden]` (same pitfall as
   `.wt-step`/`.raw-wrap`) — restate it explicitly. */
.st-tool-out[hidden] {
  display: none;
}

.st-tool-text {
  font-size: var(--fs-12);
  color: var(--muted);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow-x: auto;
}

.st-tool-detail {
  min-width: 0;
}

.st-tool-detail-label {
  margin-bottom: var(--sp-1);
  color: var(--faint);
  font-size: var(--fs-11);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.st-tool-detail pre {
  margin: 0;
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  background: var(--bg);
  color: var(--muted);
  font: inherit;
  font-size: var(--fs-12);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  overflow-x: auto;
}

.st-tool-fact {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  color: var(--faint);
  font-size: var(--fs-11);
}

.st-tool-fact code {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.st-tool-exit-ok {
  color: var(--live);
}

.st-tool-exit-failed {
  color: var(--danger);
}

.st-tool-image {
  display: block;
  width: auto;
  max-width: min(100%, 720px);
  max-height: 480px;
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  object-fit: contain;
}

.st-tool-audio {
  display: block;
  width: min(100%, 480px);
  min-height: var(--control-h);
}

.st-tool-resource {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: var(--sp-1) var(--sp-2);
  min-width: 0;
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  background: var(--bg);
  font-size: var(--fs-12);
}

.st-tool-resource-name {
  color: var(--ink);
  font-weight: 500;
}

.st-tool-resource-uri {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--muted);
}

.st-tool-resource-description {
  grid-column: 1 / -1;
  color: var(--muted);
}

.st-tool-terminal {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
}

.st-tool-raw {
  color: var(--faint);
  font-size: var(--fs-11);
}

.st-tool-raw summary {
  width: fit-content;
  padding-block: var(--sp-1);
  cursor: pointer;
  user-select: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.st-tool-raw summary:hover,
.st-tool-raw summary:focus-visible {
  color: var(--ink);
}

.st-tool-raw summary:focus-visible {
  border-radius: var(--r-1);
  outline: 2px solid var(--accent-ring);
  outline-offset: 2px;
}

.st-tool-raw-body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding-top: var(--sp-1);
}

.st-tool-group {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  background: color-mix(in oklab, var(--surface-2) 55%, transparent);
  padding: var(--sp-1) var(--sp-2);
  transition: background var(--dur-fast) var(--ease-out);
}

.st-tool-group:hover {
  background: color-mix(in oklab, var(--surface-2) 70%, transparent);
}

.st-tool-group-head {
  appearance: none;
  width: 100%;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0;
  min-width: 0;
  transition: color var(--dur-fast) var(--ease-out);
}

.st-tool-group-head:hover {
  background: var(--surface-2);
}

.st-tool-group-glyph {
  color: var(--faint);
  transition: transform var(--dur-fast) var(--ease-out);
}

.st-tool-group-head[aria-expanded="true"] .st-tool-group-glyph {
  transform: rotate(90deg);
}

.st-tool-group-title {
  flex: 1 1 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 500;
}

.st-tool-group-body {
  padding-top: 0;
}

.st-tool-group-body .st-disclosure-inner {
  display: flex;
  flex-direction: column;
  padding-top: var(--sp-1);
}

.st-tool-group-body .st-disclosure-inner > .st-row-tool {
  padding: 0;
}

/* inside a group, tool cards lose their border and background —
   the group container already provides the visual boundary. */
.st-tool-group-body .st-tool {
  border: 0;
}

.st-tool-group-body .st-tool-head {
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--r-1);
}

/* intermediate agent text inside a tool group — subdued so the final
   answer outside the group stays the prominent one. */
.st-tool-group-body .st-row-agent {
  color: var(--muted);
  font-size: var(--fs-12);
  padding: var(--sp-1) var(--sp-2);
}

.st-tool-group-body .st-row-agent .st-body > :first-child {
  margin-top: 0;
}

.st-tool-group-body .st-row-agent .st-body > :last-child {
  margin-bottom: 0;
}

.st-tool-group-body .st-row-thought {
  padding: var(--sp-1) var(--sp-2);
}

.st-tool-group-body[hidden] {
  display: none;
}

/* Live transcript rows resolve into the stream through a short occlusion,
   matching data becoming concrete without replaying on token patches. */
.st-row-enter {
  animation: structured-row-enter var(--dur) var(--ease-out) both;
}

@keyframes structured-row-enter {
  from {
    opacity: 0.2;
    transform: translateY(3px);
    clip-path: inset(0 0 18% 0);
    filter: blur(1px);
  }
}

.st-diff-block {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.st-diff-path {
  font-size: var(--fs-11);
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* the diff gets its own horizontal scroller, independent of the page */
.st-diff {
  font-size: var(--fs-12);
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-1);
}

.st-diff pre {
  margin: 0;
}

.st-ln {
  display: block;
  white-space: pre;
  padding: 0 var(--sp-3);
  line-height: 1.4;
}

.st-ln-add {
  background: color-mix(in oklab, var(--live) 14%, transparent);
}

.st-ln-del {
  background: var(--danger-tint);
}

.st-ln-ctx {
  color: var(--muted);
}

.st-ln-hunk {
  color: var(--faint);
  background: var(--surface-2);
}

.st-ln-eof {
  color: var(--faint);
  font-style: italic;
}

/* the one lifted, card-like element on the surface: the only thing the
   operator owes a decision on */
.st-approval {
  border: 1px solid var(--warn);
  border-radius: var(--r-2);
  background: color-mix(in oklab, var(--warn) 12%, var(--surface));
  box-shadow: var(--shadow-1);
  padding: var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  min-width: 0;
}

.st-approval-title {
  color: var(--warn);
  font-size: var(--fs-11);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.st-approval-what {
  color: var(--ink);
}

.st-approval-path {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  padding: var(--sp-2);
  font-size: var(--fs-12);
  overflow-x: auto;
  white-space: pre;
}

.st-approval-acts {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.st-approval-resolved {
  font-size: var(--fs-11);
  color: var(--faint);
}

/* compact resolved approval inside a tool group — same muted treatment
   as intermediate agent text so the audit trail is preserved without
   drawing attention to itself. */
.st-approval-compact {
  color: var(--muted);
  font-size: var(--fs-12);
  padding: var(--sp-1) var(--sp-2);
  font-style: italic;
}

.act {
  appearance: none;
  font: inherit;
  font-size: var(--fs-12);
  height: 26px;
  padding: 0 var(--sp-3);
  border-radius: var(--r-2);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
}

.act:hover {
  background: var(--surface-3);
}

.act:active {
  transform: translateY(1px);
}

.act:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.act.primary {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
  font-weight: 500;
}

.act.deny {
  color: var(--danger);
  border-color: color-mix(in oklab, var(--danger) 40%, transparent);
}

.act.deny:hover {
  background: var(--danger-tint);
  border-color: var(--danger);
}

/* The composer is a sibling of the scrolling transcript, not part of it: it
   stays reachable at the pane edge without changing transcript scroll math.
   It is a flush band at the foot of the pane rather than a floating card: its
   own `--surface` fill is what separates it from the transcript, over a
   hairline that doubles as the focus indicator. Inner metrics line the draft
   up with the transcript's own 12px gutter. */
.structured-composer {
  position: relative;
  flex: 0 0 auto;
  padding: var(--sp-1) var(--sp-1) max(var(--sp-1), env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: flex-end;
  gap: var(--sp-1);
  transition: border-color var(--dur-fast) var(--ease-out);
}


.structured-composer:focus-within {
  border-top-color: var(--border);
}

.structured-input-wrap {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
}

.structured-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
  padding: var(--sp-1);
}

.structured-attachments[hidden] { display: none; }

.structured-attachment {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  max-width: 100%;
  padding-left: var(--sp-2);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-1);
  font-size: var(--fs-11);
}

.structured-attachment > span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.structured-attachment button {
  flex-shrink: 0;
  min-width: var(--tap);
  min-height: var(--tap);
  border: 0;
  background: transparent;
  color: var(--muted);
}

.structured-attachment button:hover { color: var(--ink); }
.structured-attachment button:disabled { opacity: 0.5; }

.structured-input {
  display: block;
  width: 100%;
  min-width: 0;
  max-height: 160px;
  min-height: 40px;
  resize: none;
  overflow-y: hidden;
  padding: 10px var(--sp-2);
  border: 0;
  border-radius: var(--r-2);
  background: transparent;
  color: var(--ink);
  font-size: var(--fs-13);
  line-height: 20px;
}

.structured-input:focus-visible {
  outline: none;
}

.structured-composer .structured-send,
.structured-composer .structured-cancel {
  height: 40px;
  min-height: 40px;
  border-radius: var(--r-2);
  font-family: var(--font-sans);
}

.structured-composer .structured-send {
  gap: 6px;
  padding: 0 var(--sp-3);
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 650;
  box-shadow: inset 0 1px 0 color-mix(in oklab, white 24%, transparent);
}

.structured-composer .structured-send::before,
.structured-composer .structured-send::after,
.structured-composer .structured-cancel::before,
.structured-composer .structured-cancel::after {
  content: none;
}

.structured-composer .structured-send svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform var(--dur-fast) var(--ease-out);
}

.structured-composer .structured-send:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--accent-ink);
}

.structured-composer .structured-send:hover svg {
  transform: translateX(2px);
}

.structured-composer .structured-cancel {
  position: relative;
  width: 40px;
  padding: 0;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  color: var(--danger);
}

.structured-composer .structured-cancel:hover {
  background: var(--danger-tint);
}

.structured-cancel-stop {
  width: 16px;
  height: 16px;
}

.structured-cancel-spinner {
  position: absolute;
  inset: 4px;
  width: auto;
  height: auto;
  animation: cancel-spin 0.8s linear infinite;
}

@keyframes cancel-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 520px) {
  /* One row cannot hold a draft plus three controls at phone width — the
     draft gets a line of its own and the controls drop below it. */
  .structured-composer {
    flex-wrap: wrap;
    justify-content: flex-end;
    padding-left: var(--sp-2);
    padding-right: var(--sp-2);
  }

  /* `order` keeps the draft on the first line: without it the attach button,
     which precedes it in the DOM, wraps onto a line of its own. */
  .structured-input-wrap {
    flex: 1 1 100%;
    order: -1;
  }

  .structured-composer .structured-config {
    margin-right: auto;
  }

  .structured-config-menu {
    left: 0;
    right: auto;
  }
}

.structured-command-menu {
  position: absolute;
  z-index: var(--z-sticky);
  right: 0;
  bottom: calc(100% + var(--sp-2));
  left: 0;
  max-height: min(42vh, 320px);
  overflow-y: auto;
  border: 1px solid var(--border-strong);
  border-radius: var(--r-2);
  background: var(--surface);
  box-shadow: var(--shadow-2);
}

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

.structured-command-option {
  min-height: var(--tap);
  padding: var(--sp-2) var(--sp-3);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.structured-command-option:last-child {
  border-bottom: 0;
}

.structured-command-option:hover,
.structured-command-option[aria-selected="true"] {
  background: var(--accent-tint);
}

.structured-command-title {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  min-width: 0;
}

.structured-command-name {
  flex: 0 0 auto;
  color: var(--ink);
  font-weight: 600;
}

.structured-command-hint,
.structured-command-description {
  overflow: hidden;
  color: var(--muted);
  font-size: var(--fs-11);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.structured-command-hint {
  min-width: 0;
}

.structured-command-description {
  margin-top: var(--sp-1);
}

.structured-input:focus {
  outline: none;
  box-shadow: none;
}

.structured-input:disabled {
  color: var(--faint);
  background: transparent;
}

/* `.btn` sets `display: inline-flex`, which outranks the UA sheet's
   `[hidden]` — restate it explicitly (same pitfall as `.st-tool-out`). */
.structured-cancel[hidden] {
  display: none;
}

.structured-send[hidden] {
  display: none;
}

.structured-error {
  margin: 0 var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  background: var(--danger-tint);
  color: var(--danger);
  font-size: var(--fs-12);
  border-radius: var(--r-2);
}

@media (prefers-reduced-motion: reduce) {
  .act,
  .st-copyable,
  .st-copyable::after,
  .st-disclosure,
  .st-tool-head,
  .st-tool-group-glyph {
    transition-duration: 0.01ms;
  }

  .st-row-enter {
    animation: none;
  }

  .structured-activity-pulse {
    animation: none;
  }
}


/* Composer control base. The pane no longer inherits the shared `.btn` kit
   (it renders standalone, without the terminal pane's header chrome), so the
   three composer buttons carry their own base here; the `.structured-composer
   .structured-send` rules above still win on every property they set. */
.structured-attach,
.structured-send,
.structured-cancel {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--r-2);
  background: var(--surface-2);
  color: var(--ink);
  font-size: var(--fs-13);
  cursor: pointer;
  transition:
    background var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.structured-attach {
  width: 36px;
  height: 36px;
  padding: 0;
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  align-self: center;
}

.structured-attach:hover {
  background: var(--surface-3);
  color: var(--ink);
}

.structured-attach:disabled,
.structured-send:disabled,
.structured-cancel:disabled {
  opacity: 0.5;
  cursor: default;
}

/* The pane's own root: `.attach`'s flex column, without the header it no
   longer draws. */
.structured-pane {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
}