/* ==========================================================================
   Tanya Data (chat with the data in the system)
   Header · scope bar (what data is used) · message log · input
   Messages sit in one centred column, max 760px.
   ========================================================================== */

#page-chat { background: #fff; }

/* Header badge: AI answers or example mode */
.chat-mode { padding: 2px 8px; border: 1px solid var(--border-s); font-size: 11px; font-weight: 600; color: var(--text-3); }   /* quiet: technical info */

/* Log */
.chat-log { flex: 1; overflow-y: auto; padding: 24px max(24px, calc((100% - 760px) / 2)) 16px; display: flex; flex-direction: column; gap: 14px; }

.msg { max-width: 88%; font-size: 14px; line-height: 1.6; }
.msg p + p, .msg ul + p, .msg p + ul { margin-top: 8px; }
.msg ul { margin: 0; padding-left: 18px; }
.msg li + li { margin-top: 2px; }
.msg b { font-weight: 700; }

.msg.user { align-self: flex-end; padding: 10px 14px; background: var(--text); color: #fff; }
.msg.bot { align-self: flex-start; padding: 2px 0 2px 14px; border-left: 3px solid var(--pink); color: var(--text); }
.msg.bot.out { border-left-color: var(--border-s); color: var(--text-2); }
.msg.pending { color: var(--text-3); }
.msg-tag { display: inline-block; margin-bottom: 6px; padding: 1px 7px; background: var(--bg-3); font-size: 11px; font-weight: 700; letter-spacing: .04em; color: var(--text-2); }

/* Citation link */
.cite {
  display: inline-block; margin: 0 1px; padding: 1px 6px; vertical-align: 1px; min-height: 22px;
  background: var(--pink-l); border: 1px solid var(--pink-line); cursor: pointer;
  font-family: var(--mono); font-size: 11px; line-height: 1.5; color: var(--pink-d);
}
.cite:hover { background: var(--pink); border-color: var(--pink); color: #fff; }

/* Empty state */
.chat-empty { padding: 8px 0 16px; }
.chat-empty h2 { font-size: 20px; font-weight: 700; letter-spacing: -.01em; }
.chat-empty > p { margin-top: 12px; font-size: 13px; color: var(--text-2); }
.chat-empty .bound { margin-top: 20px; padding-top: 14px; border-top: 1px dashed var(--border-s); }
.chat-empty .bound b { color: var(--text); }
.suggest { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.suggest button {
  padding: 8px 12px; background: #fff; border: 1px solid var(--border-s); cursor: pointer;
  font: inherit; font-size: 13px; color: var(--text); text-align: left;
}
.suggest button:hover { border-color: var(--pink); background: var(--pink-l); }
.suggest .try-out { border-style: dashed; color: var(--text-2); }

/* Input */
.chat-form {
  display: flex; align-items: flex-end; gap: 8px; flex-shrink: 0;
  padding: 12px max(24px, calc((100% - 760px) / 2)) 16px; border-top: 1px solid var(--border);
}
.chat-form textarea {
  flex: 1; min-height: 42px; max-height: 140px; padding: 10px 12px; resize: vertical;
  border: 1px solid var(--border-s); border-radius: 0; outline: none; font: inherit; font-size: 14px; color: var(--text);
}
.chat-form textarea:focus { border-color: var(--text); }
.chat-form .btn { height: 42px; padding: 0 18px; font-size: 13px; font-weight: 600; border-radius: 0; }

@media (max-width: 700px) {
  .chat-log { padding: 16px; }
  .chat-form { padding: 10px 16px 14px; }
  .msg { max-width: 100%; }
}