/* The Listening Post — mobile composer (max-width 680px).
   Part of the /labs stylesheet, split out of one 3,400-line labs.css.

   THE NUMBER IN THE FILENAME IS LOAD-BEARING. stylesheet_link_tag :app
   collects every stylesheet under app/assets and serves them sorted by
   path, so the ordinal prefix is the only thing holding the cascade order
   these rules were written in — and several classes are shared across labs
   (.lp-head, .lab-entry, .lab-block, .dt-table). Renaming a file without
   renumbering it, or inserting one out of sequence, reorders the cascade
   silently.

   Nothing in this comment may contain the two characters that close a CSS
   comment. The first version of it wrote a shell glob here, which closed
   the comment early; the leaked text then parsed as a selector and ate the
   first real rule in all nine files. There is a test for that now.
   ============================================================ */

/* ============================================================
   Mobile-first composer (≤680px, demo page) — Claude-app pattern.
   A compact, bottom-docked input bar with inline pill controls; the
   content area scrolls freely above it. Desktop (>680px) is untouched.
   Body-level concerns (footer, Intercom launcher, padding reserve) are
   scoped to body.lp-demo; in-page concerns to the controller root.
   ============================================================ */
@media (max-width: 680px) {
  /* Reclaim the whole viewport: no fixed site footer, no launcher on this page. */
  body.lp-demo { padding-bottom: 0; }
  body.lp-demo footer.cx-footer { display: none; }
  body.lp-demo .intercom-lightweight-app-launcher,
  body.lp-demo .intercom-launcher-frame,
  body.lp-demo #intercom-container .intercom-launcher { display: none !important; }

  /* Compress the pre-conversation hero so the empty state fits ~one viewport. */
  body.lp-demo .lp-head { padding-block: 26px 14px; }
  body.lp-demo .lp-title { margin-top: 10px; }
  body.lp-demo .lp-greeting { margin-top: 8px; }
  body.lp-demo .lp-subtitle { margin-top: 10px; }

  /* Composer docked to the bottom of the viewport at all times (not just while
     conversing). Flat — background matches the page, only a hairline top border.
     --lp-kb (set from visualViewport in JS) lifts it flush above the keyboard. */
  body.lp-demo .lp-composer-dock {
    position: fixed;
    left: 0;
    right: 0;
    bottom: var(--lp-kb, 0px);
    z-index: 40;
    margin-top: 0;
    padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom, 0px));
    background: var(--bg);
    border-top: 1px solid var(--line);
  }

  /* Suggestion chips: one horizontally-scrolling row just above the input. */
  body.lp-demo .lp-chips {
    display: flex;
    gap: 8px;
    flex-wrap: nowrap;
    overflow-x: auto;
    margin-bottom: 10px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  body.lp-demo .lp-chips::-webkit-scrollbar { display: none; }
  body.lp-demo.lp-conversing .lp-chips { display: none; }

  /* Drop the floating-card look — the composer becomes a plain two-row stack. */
  body.lp-demo .lp-composer {
    max-width: none;
    margin: 0;
    background: transparent;
    border: none;
    border-radius: 0;
  }

  /* Row 1 — textarea: single line at rest (~44px); JS caps growth at 2 lines. */
  body.lp-demo .lp-composer-input {
    min-height: 44px;
    padding: 12px 4px 6px;
    line-height: 1.4;
  }

  /* Row 2 — controls on one line. Hide the "Ask a question" dropdown (chips replace it).
     Tightened padding/gaps so segment pill + Start over + send all fit at 360px. */
  body.lp-demo .lp-composer-bar { gap: 8px; padding: 6px 0 2px; }
  body.lp-demo .lp-composer-menus { flex-wrap: nowrap; min-width: 0; gap: 8px; }
  body.lp-demo .lp-composer-menus .lp-menu-trigger { padding-inline: 11px; }
  body.lp-demo .lp-menu--ask { display: none; }

  /* The composer is pinned to the bottom, so its menus must open upward, not off-screen. */
  body.lp-demo .lp-menu-panel { top: auto; bottom: calc(100% + 8px); }

  /* ≥44px touch targets even where the control looks smaller. */
  body.lp-demo .lp-menu-trigger { min-height: 44px; }
  body.lp-demo .lp-startover { flex: 0 0 auto; white-space: nowrap; }
  body.lp-demo .lp-composer-send { position: relative; }
  body.lp-demo .lp-composer-send::after { content: ""; position: absolute; inset: -3px -4px; }

  /* Scroll room: keep the last answer clear of the docked composer (footer is gone). */
  body.lp-demo.lp-conversing .lp-transcript {
    padding-bottom: calc(var(--lp-dock-h, 150px) + 16px);
  }
  body.lp-demo .lp-body { padding-bottom: 0; }
}

/* ---- empty state ---- */
.lp-empty {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  color: var(--ink-muted);
  font-size: clamp(18px, 2vw, 22px);
  margin-top: 56px;
}

/* ---- answer ---- */
.lp-answer-block { margin-top: 56px; }
.lp-asked {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 16px;
}
/* The answer is boxless markdown (headings, bold, italics, lists) in the sans body
   voice. It fills the full content column — aligned to the same left/right margins
   as the header and footer (the .wrap gutters) — rather than a narrow sub-column. */
.lp-answer-card {
  margin-top: 28px;             /* breathing room between the process log and the answer */
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
}
.lp-answer-card p { margin: 0; }
.lp-answer-card p + *,
.lp-answer-card ul + *,
.lp-answer-card ol + * { margin-top: 18px; }
.lp-answer-card h1,
.lp-answer-card h2,
.lp-answer-card h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.lp-answer-card h1 { font-size: 22px; margin: 28px 0 12px; }
.lp-answer-card h2 { font-size: 19px; margin: 26px 0 10px; }
.lp-answer-card h3 { font-size: 16.5px; margin: 22px 0 8px; }
.lp-answer-card > :first-child { margin-top: 0; }
.lp-answer-card strong { font-weight: 600; }
.lp-answer-card em { font-style: italic; }
.lp-answer-card hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 26px 0;
}
.lp-answer-card ul,
.lp-answer-card ol { margin: 14px 0; padding-left: 24px; }
.lp-answer-card ul { list-style: disc; }
.lp-answer-card ol { list-style: decimal; }
.lp-answer-card li { margin: 6px 0; padding-left: 4px; }
.lp-answer-card li::marker { color: var(--ink-faint); }

/* ---- answer tables ----
   Markdown tables in a streamed answer, styled to match the /data grid (.dt-table):
   monochrome, mono type, hairline cell rules, a faint header row, zebra + hover, and
   a bordered frame that scrolls horizontally when the table is wider than the column. */
.lp-answer-card .lp-table-wrap {
  margin: 22px 0;
  border: 1px solid var(--line);
  overflow-x: auto;
}
.lp-answer-card .lp-table {
  border-collapse: collapse;
  width: 100%;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink);
}
.lp-answer-card .lp-table th,
.lp-answer-card .lp-table td {
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding: 9px 14px;
  text-align: left;
  vertical-align: top;
}
.lp-answer-card .lp-table th:last-child,
.lp-answer-card .lp-table td:last-child { border-right: none; }
.lp-answer-card .lp-table tbody tr:last-child td { border-bottom: none; }
.lp-answer-card .lp-table thead th {
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.lp-answer-card .lp-table tbody tr:nth-child(even) td { background: rgba(0, 0, 0, 0.018); }
.lp-answer-card .lp-table tbody tr:hover td { background: rgba(0, 0, 0, 0.045); }

/* Each word lands in its own span and eases from transparent to full ink — no blur,
   just a gentle opacity ramp. Because words arrive faster than the ~0.8s fade, several
   are always mid-fade at once, giving the soft trailing gradient of Claude's chat. */
.lp-word {
  opacity: 0;
  animation: lpChunkIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
@keyframes lpChunkIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Trailing star at the end of the answer: spins while the reveal is streaming,
   then freezes (static) once the answer is complete. */
.lp-answer-star {
  display: block;
  width: 18px;
  height: 18px;
  margin-top: 20px;
  color: var(--ink);
}
.lp-answer-star svg { display: block; overflow: visible; transform-origin: center; }

/* subtle commercial footer under the answer: model · tokens · cost · latency */
.lp-answer-meta {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
}
.lp-answer-meta[hidden] { display: none; }
@media (prefers-reduced-motion: no-preference) {
  .lp-answer-star:not(.is-done) svg { animation: lpSpin 5.5s linear infinite; }
  .lp-answer-star:not(.is-done) .lp-ray {
    transform-origin: 12px 12px;
    animation: lpRay 1.4s ease-in-out infinite;
  }
  .lp-answer-star .lp-ray:nth-child(1) { animation-delay: 0s; }
  .lp-answer-star .lp-ray:nth-child(2) { animation-delay: 0.09s; }
  .lp-answer-star .lp-ray:nth-child(3) { animation-delay: 0.18s; }
  .lp-answer-star .lp-ray:nth-child(4) { animation-delay: 0.27s; }
  .lp-answer-star .lp-ray:nth-child(5) { animation-delay: 0.36s; }
  .lp-answer-star .lp-ray:nth-child(6) { animation-delay: 0.45s; }
  .lp-answer-star .lp-ray:nth-child(7) { animation-delay: 0.54s; }
  .lp-answer-star .lp-ray:nth-child(8) { animation-delay: 0.63s; }
}

/* ---- processing steps ----
   Two shells over one per-step state machine. While the pipeline runs, a single
   "live line" (spinning starburst + one label that crossfades between steps) is
   shown. Once the answer finishes, it hands off to a single "Thought for N steps"
   disclosure whose one chevron expands to reveal all four steps' captured detail
   at once. Both shells start hidden, so the no-JS fallback shows only the answer. */
.lp-steps {
  display: flex;
  flex-direction: column;
  margin-top: 22px;
}
.lp-steps-live[hidden],
.lp-steps-summary[hidden] { display: none; }

/* live line — mirrors a step-summary row; its star spins the whole time it shows */
.lp-steps-live {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 7px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  transition: opacity 0.2s cubic-bezier(0.22, 1, 0.36, 1);
}
.lp-steps-live.is-fading { opacity: 0; }               /* fade out on handoff to the summary */
.lp-steps-live-label {
  flex: 0 1 auto;
  transition: opacity 0.2s cubic-bezier(0.22, 1, 0.36, 1);
}
.lp-steps-live-label.is-out { opacity: 0; }            /* crossfade: out, swap text, in */

/* summary disclosure — one clickable head + a max-height collapsible region */
.lp-steps-summary { opacity: 1; transition: opacity 0.2s cubic-bezier(0.22, 1, 0.36, 1); }
.lp-steps-summary.is-in { opacity: 0; }                /* start transparent, JS clears it to fade in */
.lp-steps-summary-head {
  display: flex;
  align-items: center;
  gap: 11px;
  width: 100%;
  padding: 7px 0;
  border: none;
  background: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
  transition: color 0.2s;
}
.lp-steps-summary-head:hover { color: var(--ink); }
.lp-steps-summary-label { flex: 0 1 auto; }
.lp-steps-summary-head[aria-expanded="true"] .lp-step-chevron { transform: rotate(90deg); }
.lp-step-tick--static { display: block; }

.lp-steps-nested {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
/* nested steps are always laid out; the region's max-height governs visibility */
.lp-steps-nested .lp-step { display: block; }
.lp-steps-nested .lp-step-summary { cursor: default; }

/* a nested step's label row — non-interactive (the one disclosure is the head above) */
.lp-step-summary {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 7px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-faint);
}
.lp-step.is-active > .lp-step-summary { color: var(--ink); }
.lp-step.is-done   > .lp-step-summary { color: var(--ink-muted); }

/* state icon: spinning star while active, check once done */
.lp-step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  color: currentColor;
}
.lp-step-star { display: inline-flex; }
.lp-step-star svg { display: block; overflow: visible; transform-origin: center; }
.lp-step-tick { display: none; }
.lp-step.is-done > .lp-step-summary .lp-step-star { display: none; }
.lp-step.is-done > .lp-step-summary .lp-step-tick { display: block; }
.lp-ray {
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
}

.lp-step-label { flex: 0 1 auto; }

.lp-step-chevron {
  display: inline-flex;
  flex: 0 0 auto;
  color: var(--ink-faint);
  transition: transform 0.2s;
}

.lp-step-body { padding: 2px 0 14px 29px; }  /* indent under the label (icon 18 + gap 11) */
.lp-step-detail {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-muted);
  white-space: pre-wrap;
  word-break: break-word;
}
.lp-step-detail:empty { display: none; }

@media (prefers-reduced-motion: no-preference) {
  .lp-step.is-active .lp-step-star svg,
  .lp-steps-live .lp-step-star svg { animation: lpSpin 5.5s linear infinite; }
  .lp-step.is-active .lp-step-star .lp-ray,
  .lp-steps-live .lp-step-star .lp-ray {
    transform-origin: 12px 12px;
    animation: lpRay 1.4s ease-in-out infinite;
  }
  .lp-step-star .lp-ray:nth-child(1) { animation-delay: 0s; }
  .lp-step-star .lp-ray:nth-child(2) { animation-delay: 0.09s; }
  .lp-step-star .lp-ray:nth-child(3) { animation-delay: 0.18s; }
  .lp-step-star .lp-ray:nth-child(4) { animation-delay: 0.27s; }
  .lp-step-star .lp-ray:nth-child(5) { animation-delay: 0.36s; }
  .lp-step-star .lp-ray:nth-child(6) { animation-delay: 0.45s; }
  .lp-step-star .lp-ray:nth-child(7) { animation-delay: 0.54s; }
  .lp-step-star .lp-ray:nth-child(8) { animation-delay: 0.63s; }
}
@keyframes lpSpin { to { transform: rotate(360deg); } }
@keyframes lpRay  { 0%, 100% { opacity: 0.22; } 50% { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  .lp-word { animation: none; opacity: 1; filter: none; }
  .lp-step-star svg,
  .lp-step-star .lp-ray,
  .lp-answer-star svg,
  .lp-answer-star .lp-ray { animation: none; }
  /* instant label swap, handoff, and expand/collapse */
  .lp-steps-live,
  .lp-steps-live-label,
  .lp-steps-summary,
  .lp-steps-nested { transition: none; }
}

/* ---- citation hovers ----
   [n] tokens in the answer become hover targets that reveal the cited verbatim(s)
   in a tooltip (the source of truth now that "Behind the answer" is gone). */
.lp-cite {
  cursor: help;
  border-bottom: 1px dotted var(--ink-faint);
  transition: color 0.15s, border-color 0.15s;
}
.lp-cite:hover,
.lp-cite:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
  outline: none;
}

.lp-tip {
  position: fixed;
  z-index: 60;
  max-width: min(380px, 90vw);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 14px;
  box-shadow: 0 8px 28px rgba(11, 11, 12, 0.12);
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink);
  pointer-events: none;
}
.lp-tip[hidden] { display: none; }
.lp-tip-item + .lp-tip-item {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
}
.lp-tip-meta {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 5px;
}
.lp-tip-body { color: var(--ink-muted); }

/* ---- sources ---- */
.lp-sources { margin-top: 40px; }
.lp-sources summary {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  cursor: pointer;
  list-style: none;
}
.lp-sources summary::-webkit-details-marker { display: none; }
.lp-sources summary::before { content: "+ "; color: var(--ink-faint); }
.lp-sources[open] summary::before { content: "\2013 "; }
.lp-source-list { margin-top: 20px; display: flex; flex-direction: column; }
.lp-source {
  padding: 18px 0 18px 18px;
  border-left: 2px solid var(--line-soft);
  border-top: 1px solid var(--line-soft);
}
.lp-source:first-child { border-top: none; }
.lp-source-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.lp-source-id { color: var(--ink); }
.lp-source-body {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--ink-muted);
  line-height: 1.6;
  margin-top: 8px;
}