/* Query Engine — conversation workzone diagrams.
   Two page-bespoke pieces:
   · cv-route — the per-turn fork: the chat model leads the turn holding the
     search_knowledge tool, then splits into a conversational path (answer from
     self) and a grounded path (call the tool). Home of "the model decides to
     retrieve"; the per-mode contract lives in grounding, the agentic boundary
     in rag-pipeline (the page only links there).
   · cv-timeline — the session/turn timeline: a session frame holding two
     stacked turns joined by a history seam, the second turn dependent and shown
     as the model formulating a self-contained query for the tool itself (no
     separate condense step). Illustrates "context carries between turns".
   Static — no hover affordance for non-clickable blocks (README §Hover).
   Loaded by _workzone/conversation.html on top of ../../module.css
   + ../query-engine.css.
   Placement convention: docs/architecture/README.md §Styling. */

/* ════════════════ ROUTE FORK ════════════════ chat model holds the tool and
   forks per turn: conversational (answer from self) vs grounded (call tool). */
.cv-route {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem 0 0.6rem;
}
.cv-route__lead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  background: var(--tint-6);
  border: 1.5px solid var(--accent-muted);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.8rem;
}
.cv-route__h {
  font-weight: 700;
  font-size: 0.84rem;
  color: var(--text);
}
.cv-route__tool {
  font-size: 0.72rem;
  color: var(--text-dim);
}
.cv-route__split {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
}
.cv-route__paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
  width: 100%;
}
.cv-route__path {
  display: flex;
  flex-direction: column;
  gap: 0.22rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-top: 3px solid var(--s2);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.7rem;
}
/* Conversational path — answered from the model itself, no retrieval. */
.cv-route__path--talk {
  border-top-color: var(--text-muted);
}
/* Grounded path — the model calls the tool and answers from the store. */
.cv-route__path--ground {
  border-top-color: var(--accent);
}
.cv-route__cond {
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
.cv-route__path--ground .cv-route__cond {
  color: var(--accent);
}
.cv-route__out {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}
.cv-route__note {
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.45;
}

/* ════════════════ SESSION / TURN TIMELINE ════════════════ a session frame
   wrapping turns; turn 2 is a dependent follow-up rewritten before retrieval. */
.cv-timeline {
  margin: 1rem 0 0.4rem;
}
.cv-session {
  display: flex;
  align-items: stretch;
  gap: 0.7rem;
  background: var(--tint-6);
  border: 1.5px solid var(--accent-muted);
  border-radius: var(--radius-md);
  padding: 0.7rem 0.8rem;
}
.cv-session__tag {
  flex: 0 0 auto;
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  border-left: 3px solid var(--accent-muted);
  padding-left: 0.5rem;
}
.cv-turns {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.cv-turn {
  display: flex;
  flex-direction: column;
  gap: 0.18rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-left: 3px solid var(--s2);
  border-radius: var(--radius-md);
  padding: 0.55rem 0.7rem;
}
/* Dependent follow-up — the turn that needs condensing before retrieval. */
.cv-turn--dep {
  border-left-color: var(--accent);
}
.cv-turn__n {
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
.cv-turn__q {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
}
.cv-turn__note {
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.45;
}
/* The query annotation — the self-contained query the model sends to the tool. */
.cv-turn__note--rw {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--accent);
}
.cv-turn__seam {
  align-self: flex-start;
  margin-left: 0.7rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--accent-muted);
}
.cv-timeline__cap {
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.45;
  margin-top: 0.45rem;
}

/* ════════════════ CONTEXT BUDGET ════════════════ the model's window as one
   shared pool: stacked claimant bands. The two growth pushers — history (QE)
   and retrieved context (augment) — carry an accent / s4 left edge; the answer's
   room is a dashed reserve tail. */
.cb-window {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin: 1rem 0 0.6rem;
  border: 1.5px solid var(--accent-muted);
  border-radius: var(--radius-md);
  background: var(--tint-6);
  padding: 0.6rem;
}
.cb-cap {
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 0.1rem;
}
.cb-seg {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.4rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-muted);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.6rem;
}
/* Growth pushers — history (QE) and retrieved context (augment). */
.cb-seg--grow {
  border-left-color: var(--accent);
}
.cb-seg--ctx {
  border-left-color: var(--s4);
}
/* Reserved tail — the answer's protected room. */
.cb-seg--reserve {
  border-left-style: dashed;
  border-left-color: var(--s2);
  background: var(--surface);
}
.cb-seg__k {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
}
.cb-seg__v {
  flex: 1;
  font-size: 0.7rem;
  color: var(--text-dim);
  line-height: 1.4;
}
.cb-seg__tag {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.56rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  white-space: nowrap;
}

@media (max-width: 640px) {
  .cv-session {
    flex-direction: column;
    gap: 0.5rem;
  }
  .cv-route__paths {
    grid-template-columns: 1fr;
  }
}