/* Ask Orbit conversation history — desktop rail, compact drawer below 1320px. */
.conversation-workspace {
  position: relative;
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  min-width: 0;
  transition: grid-template-columns .2s ease;
}
.conversation-workspace.is-history-collapsed { grid-template-columns: 0 minmax(0, 1fr); }
.conversation-rail {
  min-width: 0;
  height: calc(100vh - var(--topbar) - var(--ribbon) - 92px);
  min-height: 520px;
  display: flex;
  flex-direction: column;
  padding: 14px 10px 10px;
  border-right: 1px solid var(--border);
  background: var(--surface-2);
  overflow: hidden;
  transition: opacity .16s ease, visibility 0s linear 0s;
}
.conversation-workspace.is-history-collapsed .conversation-rail { opacity: 0; visibility: hidden; pointer-events: none; transition-delay: 0s, .16s; }
.conversation-rail-head { display: flex; align-items: center; gap: 10px; padding: 0 4px 12px; }
.conversation-rail-head > div { min-width: 0; }
.conversation-rail-head h3 { margin-top: 3px; font-size: 14px; font-weight: 620; }
.conversation-rail-actions { display: flex; gap: 6px; margin-left: auto; }
.conversation-collapse,
.conversation-new {
  width: 32px;
  height: 32px;
  flex: none;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  background: var(--surface);
}
.conversation-collapse:hover,
.conversation-new:hover { border-color: var(--accent); color: var(--accent); }
.conversation-collapse svg { transform: rotate(90deg); }
.conversation-search {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding: 0 10px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--muted);
}
.conversation-search:focus-within { border-color: var(--accent); color: var(--accent); }
.conversation-search input { width: 100%; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--fg); font-size: 12px; }
.conversation-search input::placeholder { color: var(--muted); }
.conversation-list { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; }
.conversation-group {
  margin: 13px 8px 5px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.conversation-group:first-child { margin-top: 3px; }
.conversation-item {
  position: relative;
  display: grid;
  width: 100%;
  gap: 3px;
  padding: 10px 30px 10px 9px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background-color: transparent;
  color: var(--muted);
  box-shadow: none;
  font: inherit;
  text-align: left;
  appearance: none;
  -webkit-appearance: none;
  transition: background-color .14s ease, color .14s ease, box-shadow .14s ease;
}
.conversation-list > .conversation-item:not([aria-current='true']) { border-color: transparent; background-color: transparent; }
.conversation-item:hover { background-color: var(--fg-soft); color: var(--fg); }
.conversation-item[aria-current='true'] { border-color: transparent; background-color: color-mix(in oklch, var(--accent) 10%, var(--surface)); color: var(--fg); box-shadow: inset 0 0 0 1px color-mix(in oklch, var(--accent) 22%, transparent); }
.conversation-item-title { overflow: hidden; font-size: 12.5px; font-weight: 600; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.conversation-item-preview { overflow: hidden; font-size: 11px; line-height: 1.35; text-overflow: ellipsis; white-space: nowrap; }
.conversation-item time { position: absolute; top: 11px; right: 8px; font-family: var(--font-mono); font-size: 9px; color: var(--muted); }
.conversation-empty { display: grid; gap: 3px; padding: 22px 8px; color: var(--muted); text-align: center; }
.conversation-empty span { color: var(--fg); font-size: 12px; font-weight: 600; }
.conversation-empty small { font-size: 10.5px; }
.conversation-close { display: none; min-height: 42px; margin-top: 8px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: transparent; color: var(--muted); font-size: 12px; }
.conversation-toggle { display: inline-flex; }
.conversation-updated { white-space: nowrap; }
.conversation-workspace .chat { min-width: 0; }
.conversation-transcript-note { display: flex; justify-content: center; }
.conversation-transcript-note span { padding: 5px 9px; border-radius: 999px; background: var(--surface-2); color: var(--muted); font-family: var(--font-mono); font-size: 10px; }

@media (max-width: 1320px) {
  .conversation-workspace { display: block; }
  .conversation-workspace.is-history-collapsed { display: block; }
  .conversation-collapse { display: none; }
  .conversation-rail {
    position: absolute;
    inset: 0 auto 0 0;
    z-index: 18;
    width: min(300px, calc(100vw - 48px));
    height: 100%;
    min-height: 0;
    border-right: 1px solid var(--border);
    box-shadow: 18px 0 42px color-mix(in oklch, var(--bg) 74%, transparent);
    transform: translateX(-102%);
    visibility: hidden;
    opacity: 1;
    transition: transform .2s ease, visibility 0s linear .2s;
  }
  .conversation-workspace.is-history-collapsed .conversation-rail { opacity: 1; pointer-events: auto; }
  .conversation-workspace.is-history-open .conversation-rail { transform: translateX(0); visibility: visible; transition-delay: 0s; }
  .conversation-backdrop {
    position: absolute;
    inset: 0;
    z-index: 17;
    width: 100%;
    border: 0;
    background: color-mix(in oklch, var(--bg) 66%, transparent);
  }
  .conversation-workspace.is-history-open .conversation-backdrop { display: block; }
  .conversation-close { display: block; }
}

@media (max-width: 620px) {
  .conversation-updated { display: none; }
  .conversation-toggle { min-height: 36px; padding-inline: 9px; }
  .conversation-toggle svg { display: none; }
  .conversation-workspace .chat-scroll { padding-inline: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  .conversation-workspace, .conversation-rail, .conversation-item { transition: none; }
}