/* artifacts.css — Conversational artifacts (P20-02): tool trace lines, search
   sources, session cards, move cards. Load order is index.html's link order;
   this file is a new feature area appended after now.css.
   Rule: new styles go in the file that owns the feature, never back into one blob.

   THE LAW (mirrors app.js): no payload, no artifact. Everything in here styles
   DOM that app.js only builds when the reply really carried the field, so an
   empty reply costs nothing. All colors and faces ride tokens.css vars. */

/* ---- The two landing zones ------------------------------------------------
   #p-art sits above the words (trace, sources); the cards land in #p-extra
   below them. #p-art joins the surface's 140ms mode cross-fade so artifacts
   ease out with the words they belong to (same values as conversation.css
   gives .said/.why/#p-extra). */
.surface #p-art {
  display: flex; flex-direction: column; gap: 10px;
  max-width: 34em; margin: 0 auto 10px;
  transition: opacity 0.14s ease, transform 0.14s ease;
}
.surface.swap #p-art { opacity: 0; transform: translateY(5px); }
.surface #p-art:empty { display: none; }

/* ---- Shared deal-in (the clarify kit's beat, restated for artifacts) ------
   Same choreography as clarify.css clarifyDeal: 0.26s, 40ms apart, in reading
   order. fill-mode is `backwards`, NOT `both` — the hidden pose is needed
   during the stagger delay, but transform must let go the instant a row
   lands, so nothing outranks a later hover. */
.trace > *, .source-chips > *, .art-cards > * {
  animation: artDeal 0.26s cubic-bezier(0.2, 0.8, 0.2, 1) backwards;
}
.trace > :nth-child(1),  .source-chips > :nth-child(1),  .art-cards > :nth-child(1)  { animation-delay: 0ms; }
.trace > :nth-child(2),  .source-chips > :nth-child(2),  .art-cards > :nth-child(2)  { animation-delay: 40ms; }
.trace > :nth-child(3),  .source-chips > :nth-child(3),  .art-cards > :nth-child(3)  { animation-delay: 80ms; }
.trace > :nth-child(4),  .source-chips > :nth-child(4),  .art-cards > :nth-child(4)  { animation-delay: 120ms; }
.trace > :nth-child(5),  .source-chips > :nth-child(5),  .art-cards > :nth-child(5)  { animation-delay: 160ms; }
.trace > :nth-child(6),  .source-chips > :nth-child(6),  .art-cards > :nth-child(6)  { animation-delay: 200ms; }
.trace > :nth-child(7),  .source-chips > :nth-child(7),  .art-cards > :nth-child(7)  { animation-delay: 240ms; }
.trace > :nth-child(n+8), .source-chips > :nth-child(n+8), .art-cards > :nth-child(n+8) { animation-delay: 280ms; }
@keyframes artDeal {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- (c) Tool lines: the turn's real work, said quietly -------------------
   A mono column, small and calm. The check is the accent's one moment; the
   summary stays faint — this is a receipt, not a headline. */
.trace {
  display: flex; flex-direction: column; gap: 3px;
  font-family: var(--mono); font-size: 11.5px; line-height: 1.5;
  text-align: left;
}
.trace-line {
  display: flex; align-items: baseline; gap: 7px;
  color: var(--muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.trace-tool { color: var(--muted); flex: none; }
.trace-check { color: var(--accent); flex: none; }
.trace-sum { color: var(--faint); overflow: hidden; text-overflow: ellipsis; }

/* ---- (d) Search artifact: the query line + source chips -------------------
   The query renders ONLY when the reply data carries it (app.js gates it);
   the chips carry a favicon-stand-in dot and the source's own NAME (its
   title, falling back to its host — never the grounding redirect's host,
   which names nothing), each a real link opening in a new tab.

   A title can be a full headline, so the chip caps its width and ELLIPSES.
   The string itself is never cut: the whole title stays in the DOM and in
   the tooltip, and the row keeps its shape. */
.search-art { display: flex; flex-direction: column; gap: 8px; }
.search-query {
  display: inline-flex; align-items: center; gap: 8px;
  align-self: center;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  background: var(--control); border: 1px solid var(--line);
  border-radius: 999px; padding: 5px 14px;
  max-width: 100%; overflow: hidden;
}
.search-glyph { color: var(--accent); flex: none; }
.search-q { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.source-chips {
  display: flex; flex-wrap: wrap; gap: 6px; justify-content: center;
}
.source-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11px; color: var(--muted);
  text-decoration: none;
  background: var(--control); border: 1px solid var(--line);
  border-radius: 999px; padding: 3px 10px;
  max-width: 100%; min-width: 0;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.source-chip-label {
  max-width: 18em;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.source-chip::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; flex: none;
  background: var(--accent);
  box-shadow: 0 0 6px rgba(var(--glow-rgb), 0.4);
}
.source-chip:hover { border-color: var(--accent); color: var(--text); }
.source-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---- (a)/(b) The cards: calendar tile + body ------------------------------
   One horizontal card per session or move, stacked and dealt in. The tile is
   the date made physical: accent strip naming the day, big number, small
   time. */
.art-cards {
  display: flex; flex-direction: column; gap: 10px;
  max-width: 34em; margin: 12px auto 0;
  text-align: left;
}
.art-card {
  display: flex; align-items: stretch; gap: 14px;
  background: var(--control); border: 1px solid var(--line);
  border-radius: 12px; padding: 10px;
}
.art-tile {
  flex: none; width: 62px;
  display: flex; flex-direction: column; align-items: center;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 9px; overflow: hidden;
}
.art-tile-wd {
  align-self: stretch; text-align: center;
  font-family: var(--mono); font-size: 9px; letter-spacing: 0.12em;
  padding: 3px 0 2px;
  background: color-mix(in srgb, var(--accent) 26%, var(--surface));
  color: var(--accent-bright);
}
.art-tile-day {
  font-family: var(--sans); font-weight: 600; font-size: 22px;
  line-height: 1.15; color: var(--text); margin-top: 3px;
  font-variant-numeric: tabular-nums;
}
.art-tile-time {
  font-family: var(--mono); font-size: 9.5px; color: var(--faint);
  padding: 1px 2px 5px; white-space: nowrap;
}
.art-body {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 4px;
  justify-content: center; align-items: flex-start;
}
.art-title {
  font-family: var(--sans); font-weight: 600; font-size: 14.5px;
  color: var(--text); overflow-wrap: anywhere;
}
.art-when {
  display: flex; align-items: baseline; gap: 7px;
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.art-why {
  font-family: var(--serif); font-style: italic; font-size: 13.5px;
  color: var(--muted); line-height: 1.4;
}
.art-chip {
  display: inline-block;
  font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-bright);
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 999px; padding: 2px 9px; margin-top: 2px;
}

/* Move cards: the old time struck through and dimmed toward alert, the new
   time glowing in the accent chip. The retry note is warm and honest, never
   a claim of success. */
.art-old {
  text-decoration: line-through;
  color: color-mix(in srgb, var(--alert) 55%, var(--faint));
}
.art-arrow { color: var(--faint); }
.art-new {
  color: var(--accent-bright);
  background: color-mix(in srgb, var(--accent) 20%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  border-radius: 999px; padding: 1px 8px;
  box-shadow: 0 0 10px rgba(var(--glow-rgb), 0.22);
}
.art-note {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--warm); margin-top: 2px;
}
.art-cal-note {
  font-family: var(--serif); font-style: italic; font-size: 13px;
  color: var(--warm); text-align: center; margin-top: 8px;
}

/* Every animated feature ships its reduced-motion handling beside the
   animation it guards (frontend-standards). The stagger is presentation
   only; content lands complete either way. */
@media (prefers-reduced-motion: reduce) {
  .trace > *, .source-chips > *, .art-cards > * { animation: none; }
  .surface #p-art { transition: none; }
}