/* ============================================================
   /interview-ai/ — chat flagship components ("Copper & Ledger")
   Layers on /css/tokens.css + /css/site.css. External file so
   the page runs under style-src 'self' (no inline styles).
   ============================================================ */

/* ---------- hero ---------- */
.chat-hero { padding: var(--sp-7) 0 var(--sp-5); }
.chat-hero .eyebrow { display: block; margin-bottom: var(--sp-4); color: var(--verdigris); }
.chat-hero h1 { font-size: var(--text-display-2); max-width: 24ch; margin-bottom: var(--sp-4); }
.chat-hero .lede { max-width: 52ch; color: var(--ink-2); font-size: 1.08rem; }
@media (min-width: 800px) { .chat-hero { padding: var(--sp-8) 0 var(--sp-5); } }

/* ---------- disclosure (visible acknowledgment, not a modal) ---------- */
.disclosure-card {
  max-width: var(--chat-col);
  background: var(--paper-raise);
  border: var(--hairline);
  border-left: 3px solid var(--verdigris);
  border-radius: var(--r-card);
  padding: var(--sp-4) var(--sp-5);
  margin: var(--sp-5) 0;
}
.disclosure-card p { margin: 0 0 var(--sp-3); font-size: 0.95rem; }
.disclosure-card .storage-note { font-size: var(--text-small); color: var(--ink-2); }
.disclosure-card strong { color: var(--ink); }
.disclosure-card .ack-row { display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center; }
.disclosure-card.attention { outline: 2px solid var(--copper); outline-offset: 2px; }
.disclosure-ack-line {
  font-family: var(--font-mono); font-size: var(--text-mono-label);
  letter-spacing: var(--track-mono-label); text-transform: uppercase;
  color: var(--verdigris); margin: 0 0 var(--sp-3);
}

/* ---------- prefill note (?q= handoff) ---------- */
.prefill-note {
  max-width: var(--chat-col);
  font-family: var(--font-mono); font-size: var(--text-mono-label);
  letter-spacing: var(--track-mono-label); text-transform: uppercase;
  color: var(--copper-deep); margin: 0 0 var(--sp-2);
}

/* ---------- composer ---------- */
.ask {
  max-width: var(--chat-col);
  border: 1px solid var(--ink);
  border-radius: var(--r-card);
  background: var(--paper-raise);
  margin: 0 0 var(--sp-4);
}
.ask textarea {
  display: block; width: 100%;
  border: 0; background: transparent; resize: vertical;
  min-height: 6.2rem;
  padding: var(--sp-4) var(--sp-5);
  font: inherit; color: var(--ink);
  font-size: 1.02rem; line-height: 1.55;
  border-radius: var(--r-card) var(--r-card) 0 0;
}
.ask textarea:focus { outline: none; }
.ask textarea::placeholder { color: var(--ink-2); }
.ask-actions {
  display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center;
  border-top: var(--hairline);
  padding: var(--sp-3) var(--sp-4);
}
.ask-hint {
  margin-left: auto; font-size: var(--text-mono-label);
  color: var(--ink-2); font-family: var(--font-mono);
}
@media (max-width: 600px) { .ask-hint { display: none; } }

/* ---------- suggestion chips (real buttons) ---------- */
.suggest { padding: var(--sp-2) 0 var(--sp-6); }
.suggest .eyebrow { display: block; margin-bottom: var(--sp-3); }
.chip-list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--sp-2); max-width: var(--chat-col); }
.chip {
  font-family: var(--font-mono); font-size: 0.82rem;
  color: var(--ink); background: transparent;
  border: 1px solid var(--grid); border-radius: var(--r-chip);
  padding: 0.55rem 0.8rem; min-height: 44px;
  cursor: pointer; text-align: left;
  transition: border-color .12s ease, background .12s ease;
}
.chip:hover { border-color: var(--copper); background: var(--paper-raise); }

/* ---------- thread ---------- */
.thread-section { display: none; padding-bottom: var(--sp-7); }
.thread-section.active { display: block; }
.thread { max-width: var(--chat-col); }
.turn { border-top: var(--hairline); padding: var(--sp-5) 0 var(--sp-4); }
.turn .who {
  display: block; font-family: var(--font-mono);
  font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-2); font-weight: 500; margin-bottom: var(--sp-2);
}
.turn-you .body { font-weight: 600; }
.turn-ai .who { color: var(--verdigris); }
.turn-ai .body { max-width: 68ch; }
.turn-ai p { margin: 0 0 0.9rem; }
.turn-ai ul, .turn-ai ol { margin: 0 0 0.9rem; padding-left: 1.2rem; }
.turn-ai li { margin-bottom: 0.35rem; }
.turn-ai li::marker { color: var(--copper-deep); }
.turn-ai h3 {
  font-family: var(--font-body); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2);
  margin: 1.1rem 0 0.5rem;
}
.grounding {
  font-family: var(--font-mono); font-size: 0.68rem;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-2); margin-top: var(--sp-3);
}
.turn-ai.pending .body::after {
  content: "Thinking…"; display: block;
  font-family: var(--font-mono); font-size: var(--text-small);
  color: var(--ink-2);
}
@media (prefers-reduced-motion: no-preference) {
  .turn-ai.pending .body::after {
    content: ""; display: inline-block; width: 0.6em; height: 1em;
    vertical-align: text-bottom;
    background: linear-gradient(90deg, var(--copper), transparent);
    animation: pulse 1.1s ease-in-out infinite;
  }
  @keyframes pulse { 0%, 100% { opacity: 0.25; } 50% { opacity: 0.9; } }
}

/* ---------- per-answer tools + follow-ups ---------- */
.turn-tools { display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-5); margin-top: var(--sp-3); }
.turn-tools button {
  background: none; border: 0; padding: 0.6rem 0; min-height: 44px;
  cursor: pointer;
  font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2);
}
.turn-tools button:hover { color: var(--copper-hover); }
.followups { margin-top: var(--sp-3); display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.followups .chip { font-size: 0.78rem; }

/* ---------- notices (state system) ---------- */
.notice {
  max-width: var(--chat-col);
  border-top: var(--hairline);
  padding: var(--sp-5) 0 var(--sp-4);
  color: var(--ink-2); font-size: 0.95rem;
}
.notice .who {
  display: block; font-family: var(--font-mono);
  font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  font-weight: 500; margin-bottom: var(--sp-2); color: var(--copper-deep);
}
.notice strong { color: var(--ink); }
.notice .notice-actions { margin-top: var(--sp-3); display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-5); }
.notice .notice-actions button {
  background: none; border: 0; padding: 0.6rem 0; min-height: 44px; cursor: pointer;
  font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--copper-deep);
}
.notice .notice-actions button:hover { color: var(--copper-hover); }

/* Governed boundary answers (security / unsupported) keep the AI voice but
   are visually distinguished by a verdigris rule. */
.turn-ai.boundary { border-left: 3px solid var(--verdigris); padding-left: var(--sp-4); }

/* ---------- contact CTA card ---------- */
.chat-cta {
  max-width: var(--chat-col);
  border: var(--hairline); border-radius: var(--r-card);
  background: var(--paper-raise);
  padding: var(--sp-4) var(--sp-5); margin: var(--sp-5) 0 0;
}
.chat-cta p { margin: 0 0 var(--sp-3); }
.chat-cta .cta-row { display: flex; flex-wrap: wrap; gap: var(--sp-3); }

/* ---------- composer bar (chat mode) ----------
   STICKY, not viewport-fixed: it pins to the viewport bottom while the
   conversation scrolls, but participates in layout at the document end —
   so at full scroll nothing (answers, chips, footer) is ever underneath
   it. The measured height rides --chatbar-h (set by a ResizeObserver in
   the client) so spacing and focus scroll-margins track real composer
   size across zoom and text-size changes. */
.chatbar {
  display: none;
  position: sticky; bottom: 0; z-index: 60;
  background: var(--paper); border-top: 1px solid var(--ink);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
body.chatting .chatbar { display: block; }
/* The transcript can always scroll its last item clear of the stuck bar. */
body.chatting .thread-section.active { padding-bottom: calc(var(--chatbar-h, 96px) + var(--sp-7)); }
/* Keyboard focus and programmatic scrolls always clear the composer. */
.thread .turn, .thread .notice, .followups .chip, .chat-cta, .turn-tools button {
  scroll-margin-bottom: calc(var(--chatbar-h, 96px) + var(--sp-5));
}
.chatbar-label {
  display: flex; justify-content: space-between; align-items: center; gap: var(--sp-4);
  font-family: var(--font-mono); font-size: 0.66rem;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-2);
  padding: 0.45rem 0 0.2rem;
}
.chatbar-label .bar-links { display: flex; flex-wrap: wrap; gap: var(--sp-4); }
.chatbar-label button, .chatbar-label a {
  background: none; border: 0; padding: 0.4rem 0; cursor: pointer;
  font: inherit; color: var(--ink-2); text-decoration: none; letter-spacing: inherit;
  text-transform: inherit;
}
.chatbar-label button:hover, .chatbar-label a:hover { color: var(--copper-hover); }
.chatbar-inner { display: flex; gap: var(--sp-3); align-items: flex-end; padding-bottom: var(--sp-3); }
.chatbar textarea {
  flex: 1; resize: none; min-height: 2.9rem; max-height: 9rem;
  border: 1px solid var(--ink); border-radius: var(--r-chip); background: var(--paper-raise);
  padding: 0.6rem 0.8rem; font: inherit; font-size: 1rem; line-height: 1.5; color: var(--ink);
}
body.chatting .chat-hero, body.chatting .suggest, body.chatting .ask-block { display: none; }