/*
  Chat thread, composer, message bodies and code blocks.

  Loaded only on chat pages. Like app.css, every value resolves through
  tokens.css.
*/

/* --- Thread --------------------------------------------------------------- */
.thread-scroll {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.thread {
  max-width: var(--thread-max-width);
  margin: 0 auto;
  padding: var(--sp-6) var(--sp-5) var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}

.thread__intro {
  display: grid;
  place-items: center;
  gap: var(--sp-3);
  text-align: center;
  padding: var(--sp-12) 0 var(--sp-6);
}

/* --- Messages ------------------------------------------------------------- */
.msg {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: var(--sp-3);
  align-items: start;
}

.msg__gutter {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  overflow: hidden;
}
.msg__mark { width: 2rem; height: 2rem; }
.msg__avatar { width: 2rem; height: 2rem; border-radius: var(--radius); }
.msg__initial {
  width: 2rem; height: 2rem;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  background: var(--surface-active);
  color: var(--ink-muted);
  font-size: var(--text-sm);
  font-weight: 600;
}

.msg__main { min-width: 0; }

.msg__meta {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  margin-bottom: var(--sp-1);
}
.msg__author {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
}
.msg__model {
  font-size: var(--text-xs);
  color: var(--ink-faint);
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 16rem;
}

.msg__body {
  line-height: var(--leading-relaxed);
  overflow-wrap: break-word;
}
/* User turns and mid-stream assistant text are plain text, so newlines and
   runs of spaces have to survive. */
.msg__body--plain { white-space: pre-wrap; }

.msg--user .msg__body--plain {
  background: var(--bubble-user);
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-lg);
  display: inline-block;
  max-width: 100%;
}

.msg__error { margin: var(--sp-2) 0; align-items: flex-start; }

/* --- Streaming indicator -------------------------------------------------- */
/* Shown until the first token arrives, then hidden by the sibling selector
   below -- no JavaScript involved in either direction. */
.msg__waiting { padding: var(--sp-2) 0; }

.dots { display: inline-flex; gap: 0.25rem; align-items: center; }
.dots i {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: var(--radius-full);
  background: var(--ink-faint);
  animation: dot-pulse 1.3s ease-in-out infinite;
}
.dots i:nth-child(2) { animation-delay: 0.18s; }
.dots i:nth-child(3) { animation-delay: 0.36s; }

@keyframes dot-pulse {
  0%, 60%, 100% { opacity: 0.28; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-2px); }
}

/* A caret trailing the text while it streams. Attached to the last block so it
   sits at the end of the prose rather than on a line of its own. */
.msg__body--live:not(:empty) > :last-child::after {
  content: "";
  display: inline-block;
  width: 0.45rem;
  height: 1.05em;
  margin-left: 1px;
  vertical-align: text-bottom;
  background: var(--leaf);
  opacity: 0.75;
  animation: caret 1.05s steps(1) infinite;
}
@keyframes caret { 0%, 49% { opacity: 0.75; } 50%, 100% { opacity: 0; } }

/* --- Reasoning ------------------------------------------------------------ */
.reasoning {
  margin: 0 0 var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  font-size: var(--text-sm);
}

/*
  A live block is emitted before the first token arrives, and plenty of models
  emit no reasoning at all. Hiding it until it has content means those models
  never show an empty "Thinking" box, and no JavaScript is involved either way.
*/
.reasoning--live:not(:has(.reasoning__body:not(:empty))) { display: none; }

.reasoning__summary {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  cursor: pointer;
  color: var(--ink-muted);
  list-style: none;
  user-select: none;
  border-radius: var(--radius);
}
.reasoning__summary::-webkit-details-marker { display: none; }
.reasoning__summary:hover { color: var(--ink); background: var(--surface-hover); }

/* --- Compacted turns -------------------------------------------------------
   Summarised messages, kept and readable but out of the way. Collapsed by
   default: the point of compacting was that they stopped mattering.
*/
.compacted {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 50%, transparent);
}
.compacted__summary {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  cursor: pointer;
  color: var(--ink-muted);
  font-size: var(--text-sm);
  list-style: none;
  user-select: none;
}
.compacted__summary::-webkit-details-marker { display: none; }
.compacted__summary:hover { color: var(--ink); }
.compacted[open] .reasoning__chevron { transform: rotate(180deg); }

.compacted__note {
  margin: 0;
  padding: 0 var(--sp-3);
  font-size: var(--text-xs);
  color: var(--ink-faint);
  line-height: var(--leading-normal);
}
.compacted__body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  padding: var(--sp-4) var(--sp-3);
  opacity: 0.75;
}

/* --- Suggestions -----------------------------------------------------------
   Starting points on the empty screen. Cards rather than a list, because they
   are things to press.
*/
.suggestions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: var(--sp-3);
  width: 100%;
  max-width: 40rem;
  margin-top: var(--sp-6);
  text-align: left;
}

.suggestion {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.suggestion:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.suggestion:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.suggestion__name { font-weight: 600; font-size: var(--text-sm); }
.suggestion__note {
  font-size: var(--text-xs);
  color: var(--ink-muted);
  line-height: var(--leading-normal);
}

/* Something is happening to the whole thread rather than to one message --
   compaction, which makes a model call and can take a while. Shaped like a
   turn so it sits in the column rather than floating over it. */
.thread__working {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
  color: var(--ink-muted);
  font-size: var(--text-sm);
}

/* --- Metrics ---------------------------------------------------------------
   What a reply cost, under the bubble. Quiet by default: it is reference, not
   something to read every time.
*/
.msg__metrics {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-2);
  font-size: var(--text-xs);
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
}
.msg__metrics:empty { display: none; }

.metric { display: inline-flex; align-items: center; gap: var(--sp-1); cursor: default; }

.metric__bar {
  display: inline-block;
  width: 3rem;
  height: 0.3rem;
  border-radius: var(--radius-full);
  background: var(--surface-active);
  overflow: hidden;
}
.metric__fill {
  display: block;
  height: 100%;
  background: var(--ink-faint);
  transition: width var(--transition);
}
.metric--context.is-warning { color: var(--warning); }
.metric--context.is-warning .metric__fill { background: var(--warning); }
.metric--context.is-danger { color: var(--danger); }
.metric--context.is-danger .metric__fill { background: var(--danger); }

.reasoning__icon { color: var(--leaf); flex: none; }
.reasoning__label { flex: 1; font-style: italic; }

.reasoning__chevron {
  flex: none;
  transition: transform var(--transition-fast);
}
.reasoning[open] .reasoning__chevron { transform: rotate(180deg); }

.reasoning__body {
  padding: 0 var(--sp-3) var(--sp-3);
  margin-left: var(--sp-2);
  border-left: 2px solid var(--border-strong);
  padding-left: var(--sp-3);
  white-space: pre-wrap;
  color: var(--ink-muted);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-height: 26rem;
  overflow-y: auto;
  scrollbar-width: thin;
}

/* Gentle pulse on the icon while thinking is still streaming. */
.reasoning--live .reasoning__icon { animation: think-pulse 1.6s ease-in-out infinite; }
@keyframes think-pulse {
  0%, 100% { opacity: 0.45; }
  50% { opacity: 1; }
}

/* --- Tool activity --------------------------------------------------------
   Deliberately the same object as the reasoning block: both answer "what did
   it do before it replied", and giving them two visual languages would suggest
   a difference that is not there. */
.tool-activity-list:empty { display: none; }

.tool-activity {
  margin: 0 0 var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  font-size: var(--text-sm);
}
.tool-activity--error { border-color: var(--danger); }

.tool-activity__summary {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  cursor: pointer;
  color: var(--ink-muted);
  list-style: none;
  user-select: none;
  border-radius: var(--radius);
}
.tool-activity__summary::-webkit-details-marker { display: none; }
.tool-activity__summary:hover { color: var(--ink); background: var(--surface-hover); }
.tool-activity__icon { color: var(--leaf); flex: none; }
.tool-activity__label { flex: 1; }
.tool-activity__count { color: var(--ink-faint); }
.tool-activity[open] .reasoning__chevron { transform: rotate(180deg); }

.tool-activity__body {
  padding: 0 var(--sp-3) var(--sp-3);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}
.tool-activity__error { margin: 0; color: var(--ink-muted); }

.tool-result {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: var(--sp-3);
  border-left: 2px solid var(--border-strong);
  min-width: 0;
}
.tool-result__title {
  color: var(--accent);
  font-weight: 500;
  overflow-wrap: anywhere;
}
.tool-result__host { color: var(--ink-faint); font-size: var(--text-xs); }
.tool-result__snippet {
  margin: 0;
  color: var(--ink-muted);
  line-height: var(--leading-relaxed);
}

/* What a tool returned, verbatim. Preformatted rather than rendered: this is
   third-party text and markdown is the one path allowed to emit HTML. */
.tool-result__text {
  margin: 0;
  padding: var(--sp-3);
  border-radius: var(--radius-sm);
  background: var(--bg-sunken);
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: var(--leading-relaxed);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 22em;
  overflow-y: auto;
}

/* --- The model asking you something --------------------------------------- */
/* Attributed to the model on purpose. A card styled like the application is a
   card people answer with things they would not tell a chatbot. */
.interaction {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin: var(--sp-3) 0;
  padding: var(--sp-4);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  background: var(--surface);
}
.interaction__from {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0;
  color: var(--ink-faint);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.interaction__form { display: flex; flex-direction: column; gap: var(--sp-4); }
/* One block per question. Several go on one card and submit together. */
.interaction__question {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}
.interaction__question + .interaction__question {
  padding-top: var(--sp-4);
  border-top: 1px solid var(--border);
}
.interaction__title { margin: 0; padding: 0; color: var(--ink); font-weight: 500; }
.interaction__options { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.interaction__note { color: var(--ink-faint); font-size: var(--text-xs); }

/* An option. A radio, so picking one unpicks the last, but shaped like the
   button it reads as. */
.chip { position: relative; display: inline-flex; }
.chip input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  margin: 0;
}
.chip span {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-h);
  padding: 0 var(--sp-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  color: var(--ink-muted);
  font-size: var(--text-sm);
}
.chip input:hover + span { background: var(--surface-hover); color: var(--ink); }
.chip input:checked + span {
  border-color: var(--accent);
  background: var(--surface-active);
  color: var(--ink);
}
.chip input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.interaction__detail {
  margin: 0;
  padding: var(--sp-3);
  border-radius: var(--radius-sm);
  background: var(--bg-sunken);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.interaction__reason { margin: 0; color: var(--ink-muted); font-size: var(--text-xs); }
.interaction__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  align-items: center;
}
.interaction__write { display: flex; gap: var(--sp-2); flex: 1 1 16rem; min-width: 0; }
.interaction__write .input { flex: 1; min-width: 0; }

/* --- Stop, notes and editing ---------------------------------------------- */
.msg__status { font-size: var(--text-xs); color: var(--ink-faint); font-style: italic; }
.msg__status:empty { display: none; }

.msg__waiting {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) 0;
}
/* Once the answer has content the caret carries the "still going" signal, so
   the dots go, but Stop must stay reachable until the stream ends. */
.msg__body--live:not(:empty) + .msg__waiting .dots { display: none; }

/* Send and Stop are one button. Which icon shows is decided here rather than
   in JavaScript, so the state is visible in the markup and the swap is free. */
.composer__icon { display: flex; }
[data-composer-action="send"] .composer__icon--stop,
[data-composer-action="stop"] .composer__icon--send { display: none; }

.composer__btn[data-composer-action="stop"] {
  background: var(--danger);
  border-color: var(--danger);
  color: var(--ink-inverse);
}
.composer__btn[data-composer-action="stop"]:hover:not(:disabled) {
  background: var(--danger-hover);
  border-color: var(--danger-hover);
}
/* The microphone is the same shape: one button, state in a data attribute. */
[data-mic-state="idle"] .composer__icon--recording,
[data-mic-state="working"] .composer__icon--recording,
[data-mic-state="recording"] .composer__icon--mic { display: none; }

.composer__mic[data-mic-state="recording"] {
  background: var(--danger);
  border-color: var(--danger);
  color: var(--ink-inverse);
  animation: mic-pulse 1.6s ease-in-out infinite;
}

@keyframes mic-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-soft); }
  50% { box-shadow: 0 0 0 5px transparent; }
}

/* Play and stop on the read-aloud button, chosen by the class audio.js sets. */
.speak__icon { display: flex; }
[data-speak] .speak__icon--stop,
[data-speak].is-speaking .speak__icon--play { display: none; }
[data-speak].is-speaking .speak__icon--stop { display: flex; }
[data-speak].is-speaking { color: var(--accent); }

.composer__stop-square {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 2px;
  background: currentColor;
}

.msg__note {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  margin: var(--sp-2) 0 0;
  font-size: var(--text-xs);
  color: var(--ink-faint);
  font-style: italic;
}

.msg--editing .msg__main { width: 100%; }
.edit-form { display: flex; flex-direction: column; gap: var(--sp-3); }
.edit-form .textarea { min-height: 4rem; }

/* --- Message actions ------------------------------------------------------ */
.msg__actions {
  display: flex;
  gap: var(--sp-1);
  margin-top: var(--sp-2);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.msg:hover .msg__actions,
.msg:focus-within .msg__actions { opacity: 1; }
.msg__actions .is-copied { color: var(--success); }

/* --- Rendered Markdown ---------------------------------------------------- */
.msg__body > :first-child { margin-top: 0; }
.msg__body > :last-child { margin-bottom: 0; }

.msg__body h1, .msg__body h2, .msg__body h3,
.msg__body h4, .msg__body h5, .msg__body h6 {
  margin: var(--sp-5) 0 var(--sp-2);
}
.msg__body h1 { font-size: var(--text-xl); }
.msg__body h2 { font-size: var(--text-lg); }
.msg__body h3 { font-size: var(--text-md); }

.msg__body ul, .msg__body ol { margin: 0 0 var(--sp-4); padding-left: var(--sp-6); }
.msg__body li { margin-bottom: var(--sp-1); }

.msg__body blockquote {
  margin: 0 0 var(--sp-4);
  padding: var(--sp-1) var(--sp-4);
  border-left: 3px solid var(--border-strong);
  color: var(--ink-muted);
  font-style: italic;
}

.msg__body hr { border: 0; border-top: 1px solid var(--border); margin: var(--sp-5) 0; }

.msg__body :not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.13em 0.36em;
  border-radius: var(--radius-sm);
  background: var(--code-bg);
  border: 1px solid var(--code-border);
}

.msg__body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 var(--sp-4);
  font-size: var(--text-sm);
  display: block;
  overflow-x: auto;
}
.msg__body th, .msg__body td {
  border: 1px solid var(--border);
  padding: var(--sp-2) var(--sp-3);
  text-align: left;
}
.msg__body th { background: var(--surface); font-weight: 600; }

.msg__body img { max-width: 100%; height: auto; border-radius: var(--radius); }

/* --- Code blocks ---------------------------------------------------------- */
.code-block {
  margin: 0 0 var(--sp-4);
  border: 1px solid var(--code-border);
  border-radius: var(--radius);
  background: var(--code-bg);
  overflow: hidden;
}
.code-block__label {
  padding: var(--sp-1) var(--sp-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--ink-faint);
  border-bottom: 1px solid var(--code-border);
  background: color-mix(in srgb, var(--code-bg) 60%, var(--surface));
}
.code-block__pre {
  margin: 0;
  padding: var(--sp-3) var(--sp-4);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.55;
}
.code-block__pre code { font-family: inherit; background: none; border: 0; padding: 0; }

/*
  Pygments token colours, mapped onto theme tokens rather than a fixed scheme,
  so code follows the active theme. classprefix "pg-" is set in markdown.py.
*/
.pg-c, .pg-c1, .pg-cm, .pg-cs, .pg-cp { color: var(--ink-faint); font-style: italic; }
/* Keywords take --warning, not the brand accent: strings are already green, and
   two greens in one code block is not a colour scheme, it is a bug report. */
.pg-k, .pg-kn, .pg-kd, .pg-kc, .pg-kr, .pg-kt { color: var(--warning); }
.pg-s, .pg-s1, .pg-s2, .pg-sb, .pg-sd, .pg-se, .pg-sh, .pg-si, .pg-sx { color: var(--success); }
.pg-m, .pg-mi, .pg-mf, .pg-mh, .pg-mo { color: var(--danger); }
.pg-nf, .pg-nd { color: var(--accent); }
.pg-nc, .pg-nn { color: var(--accent-hover); font-weight: 600; }
.pg-nb, .pg-bp { color: var(--accent); }
.pg-nv, .pg-vi, .pg-vg, .pg-vc { color: var(--ink); }
.pg-o, .pg-ow, .pg-p { color: var(--ink-muted); }
.pg-err { color: var(--danger); }
.pg-gd { color: var(--danger); }
.pg-gi { color: var(--success); }

/* --- Composer ------------------------------------------------------------- */
.composer {
  flex: none;
  padding: var(--sp-3) var(--sp-5) var(--sp-4);
  border-top: 1px solid var(--border);
  background: var(--bg);
}
/* position: relative anchors the `@` and `/` menu to the box. */
.composer__inner {
  position: relative;
  max-width: var(--thread-max-width);
  margin: 0 auto;
}

/*
  A column: chips, then the text across the full width, then one toolbar row.

  The text gets its own row rather than sharing one with the buttons, which is
  what lets the toolbar hold more than two controls without the input shrinking
  to nothing. The chips stay inside the form so their hidden file_ids inputs are
  submitted with the message.
*/
.composer__form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.composer__form:focus-within {
  border-color: var(--accent);
  box-shadow: var(--ring);
}

/*
  The text, and the mirror behind it.

  Every property that affects where a character lands is declared once, on both
  -- font, size, line height, padding, wrapping. A single difference and the
  rectangles slide off the words they are marking. `font: inherit` on the
  textarea is not enough: a textarea's default font is not the page's.
*/
.composer__field { position: relative; }

.composer__input,
.composer__mirror {
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: var(--sp-2) var(--sp-2) var(--sp-1);
  border: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  letter-spacing: normal;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: normal;
  max-height: 20rem;
}

.composer__input {
  position: relative;
  display: block;
  background: none;
  resize: none;
  color: var(--ink);
  overflow-y: auto;
}
.composer__input:focus { outline: none; }

/* Behind, and contributing nothing but background rectangles: its own text is
   transparent, so the glyphs on screen are always the textarea's. That is what
   makes a pixel of drift invisible rather than a doubled letter. */
.composer__mirror {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  color: transparent;
  pointer-events: none;
  user-select: none;
}
.composer__mirror .tok-mention,
.composer__mirror .tok-command {
  border-radius: var(--radius-sm);
  /* Bled sideways so the rectangle does not sit hard against the next word,
     and the negative margin keeps the text metrics identical. */
  padding: 0 2px;
  margin: 0 -2px;
}
.composer__mirror .tok-mention { background: var(--accent-soft); }
.composer__mirror .tok-command { background: var(--leaf-soft); }

/* The same two in a sent message, where they are text rather than a backdrop. */
.tok-mention {
  border-radius: var(--radius-sm);
  padding: 0 2px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.95em;
}

/* Everything that acts on the message, on one line under it. It wraps rather
   than scrolls: on a narrow window the context controls drop to their own row
   and attach/send stay where the thumb expects them. */
.composer__toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.composer__tools { display: flex; align-items: center; gap: var(--sp-1); flex: none; }
.composer__actions { display: flex; align-items: center; gap: var(--sp-1); margin-left: auto; }
.composer__context {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-2);
  min-width: 0;
}
.composer__agent { display: flex; align-items: center; gap: var(--sp-2); min-width: 0; }

/* Round, and the same size as each other: attach and send read as one pair
   bracketing the row. */
.composer__btn { flex: none; border-radius: var(--radius-full); }

/* The directory, on a new chat. Monospace because it is a path, and it grows
   to fit rather than being pinned to a width that truncates every real one. */
.composer__dir { max-width: 16rem; font-family: var(--font-mono); font-weight: 400; }
.composer__dir-path { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.composer__hint {
  margin: var(--sp-2) 0 0;
  font-size: var(--text-xs);
  color: var(--ink-faint);
  text-align: center;
}
.composer__hint-link {
  border: 0;
  padding: 0;
  background: none;
  font: inherit;
  color: var(--ink-muted);
  text-decoration: underline dotted;
  text-underline-offset: 2px;
  cursor: pointer;
}
.composer__hint-link:hover { color: var(--accent); }

/*
  The menu `@` and `/` open.

  Above the composer, not below it: the composer is already at the bottom of
  the window, so anything dropping down would be off screen -- the same reason
  the attach menu is `picker--up`. Anchored to .composer__inner so it lines up
  with the box rather than with the caret; a caret-following menu is nicer and
  needs measuring text in a textarea, which cannot be done without a hidden
  mirror element.
*/
.composer-menu {
  position: absolute;
  bottom: calc(100% + var(--sp-2));
  left: 0;
  right: 0;
  z-index: var(--z-dropdown);
  max-height: min(20rem, 45vh);
  overflow-y: auto;
  scrollbar-width: thin;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-raised);
  box-shadow: var(--shadow-lg);
}

/* What the keys do, pinned to the bottom of the menu. */
.composer-menu__keys {
  position: sticky;
  bottom: 0;
  padding: var(--sp-1) var(--sp-3);
  border-top: 1px solid var(--border);
  background: var(--surface-raised);
  color: var(--ink-faint);
  font-size: var(--text-xs);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.picker__group {
  margin: 0;
  padding: var(--sp-2) var(--sp-3) var(--sp-1);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* The help and usage sheets. */
.sheet { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.sheet td { padding: var(--sp-1) var(--sp-2); vertical-align: top; }
.sheet td:first-child { white-space: nowrap; color: var(--ink-muted); width: 1%; }
.sheet tr + tr td { border-top: 1px solid var(--border); }

/* --- Folders -------------------------------------------------------------- */
.folder__row { padding-right: var(--sp-1); }
.folder__toggle {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  padding: 0;
  color: inherit;
  font: inherit;
  cursor: pointer;
  text-align: left;
}
.folder__chevron {
  display: inline-flex;
  transition: transform var(--transition-fast);
}
.folder__chevron.is-open { transform: rotate(90deg); }
.folder__contents { padding-left: var(--sp-4); }

.nav-item__link {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex: 1;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

/* --- Attachment chips (composer) ------------------------------------------
   Named `attach-chip` and not `chip`, which is the radio pill above. The two
   were both called `.chip` and both set padding, border and max-width, so the
   later block won and the Chat/Agent pills silently inherited the padding of
   an attachment card. Two components with one name is a collision, not a
   family. */
.composer { position: relative; }

.composer__attachments {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-1) 0;
}
.composer__attachments:empty { display: none; }

.attach-chip {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  max-width: 20rem;
  font-size: var(--text-sm);
}
.attach-chip--error { border-color: var(--danger); background: var(--danger-soft); }
.attach-chip--error .attach-chip__icon { color: var(--danger); }

.attach-chip__thumb {
  display: block;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex: none;
}
.attach-chip__icon { color: var(--ink-muted); flex: none; display: flex; }
.attach-chip__body { min-width: 0; flex: 1; display: flex; flex-direction: column; }
.attach-chip__name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attach-chip__meta { font-size: var(--text-xs); color: var(--ink-faint); }
.attach-chip__warning { font-size: var(--text-xs); color: var(--danger); }

/* --- Drag and drop -------------------------------------------------------- */
.dropzone-overlay {
  position: absolute;
  inset: 0;
  z-index: var(--z-raised);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  border: 2px dashed var(--accent);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--bg) 88%, var(--accent));
  color: var(--accent);
  font-weight: 500;
  /* The overlay must not eat the drop event it is advertising. */
  pointer-events: none;
}
.composer.is-dropping .dropzone-overlay { display: flex; }

/* --- Attachments in the thread -------------------------------------------- */
.attachments {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}
/* No frame: an attachment is a picture, and a border around it only ever drew
   at the wrong width. The anchor shrink-wraps its image rather than filling the
   column, and the width/height attributes on the <img> are overridden so a
   small image is shown at its own size instead of being stretched. */
.attachments__image {
  display: inline-flex;
  max-width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  line-height: 0;
}
.attachments__image img {
  display: block;
  width: auto;
  height: auto;
  max-width: min(22rem, 100%);
  max-height: 20rem;
  object-fit: contain;
}
.attachments__doc {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: var(--text-sm);
  max-width: 100%;
}
.attachments__doc-body { display: flex; flex-direction: column; min-width: 0; }
.attachments__doc-body > a { overflow-wrap: anywhere; }

/* --- Model avatars -------------------------------------------------------- */
.model-avatar {
  width: 2rem;
  height: 2rem;
  flex: none;
  border-radius: var(--radius);
  object-fit: cover;
  background: var(--surface-active);
}
.model-avatar--initial {
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  /* Hue comes from the model id (see the stable_hue filter); saturation and
     lightness are fixed so every generated badge stays legible in both themes. */
  background: hsl(var(--avatar-hue, 40) 42% 34%);
  color: hsl(var(--avatar-hue, 40) 60% 92%);
}
:root[data-theme="shire"] .model-avatar--initial {
  background: hsl(var(--avatar-hue, 40) 46% 82%);
  color: hsl(var(--avatar-hue, 40) 60% 22%);
}

/* --- Theme toggle --------------------------------------------------------- */
/* Only the icon for the theme you would switch TO is shown. Both live in the
   same button, so the wrapper must not add a line box of its own. */
.theme-icon { display: flex; }
:root[data-theme="moria"] .theme-icon--dark { display: none; }
:root[data-theme="shire"] .theme-icon--light { display: none; }

/* Alpine sets x-cloak until it has initialised; without this, collapsed
   folders flash open on every page load. */
[x-cloak] { display: none !important; }

/* --- Unread indicator ------------------------------------------------------ */
.unread-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--success);
  flex: none;
  /* A ring so it stays visible against the active row's lighter background. */
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--success) 25%, transparent);
}
.unread-dot[hidden] { display: none; }

/* --- Agent chats -----------------------------------------------------------
   `.select--sm` and `.input--sm` are defined once, in app.css, at
   var(--control-h-sm). A second definition here made every small control on a
   chat page 0.15rem taller than the same control anywhere else -- which is
   exactly the drift --control-h exists to prevent.
*/

/* The connection. Wide enough to read a machine's name without truncating it
   to three characters, which is what it did while `.select--sm` did not exist.
   A floor rather than a fixed width, so a long name still grows. */
.composer__connection { min-width: 10rem; }

/*
  Chat or Agent: one control with two halves, not two buttons that happen to be
  adjacent. Radios underneath, because the choice is permanent and mutually
  exclusive and should read as a fork -- and because a radio group is what a
  screen reader already knows how to announce.
*/
.segmented {
  display: inline-flex;
  flex: none;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--bg-sunken);
}
.segmented__option { position: relative; display: inline-flex; }
.segmented__option input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  margin: 0;
}
.segmented__option span {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  height: calc(var(--control-h-sm) - 2px);
  padding: 0 var(--sp-3);
  border-radius: var(--radius-full);
  color: var(--ink-faint);
  font-size: var(--text-xs);
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.segmented__option input:hover + span { color: var(--ink-muted); }
.segmented__option input:checked + span {
  background: var(--surface-raised);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
}
.segmented__option input:focus-visible + span {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* --- A plan, and the way to carry it out ----------------------------------- */
.plan {
  margin: var(--sp-3) 0;
  padding: var(--sp-4);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  background: var(--surface);
}
.plan__title {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0 0 var(--sp-3);
  font-size: var(--text-base);
  color: var(--ink);
}
.plan__steps {
  margin: 0 0 var(--sp-4);
  padding-left: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  color: var(--ink-muted);
  line-height: var(--leading-relaxed);
}
.plan__note { color: var(--ink-faint); font-size: var(--text-xs); }