/*
 * Hub "Agentic Tree" view. Ports the Agent's tree.css verbatim, scoped under .hub-tree, and
 * bridges the Agent's design tokens to the Hub theme so it renders identically without
 * dragging the Agent's palette into the app. Loaded globally; only matches inside .hub-tree.
 */
.hub-tree {
  --ink: var(--theme-text-primary);
  --ink-2: var(--theme-text-secondary);
  --muted: var(--theme-text-muted);
  --card: var(--theme-card-bg);
  --line: var(--theme-border-color);
  --ground: var(--theme-bg-secondary);
  --tint: var(--theme-bg-accent);
  --primary: var(--theme-primary);
  --primary-dark: var(--theme-primary-dark);
  --radius: var(--theme-border-radius);
  --radius-sm: var(--theme-border-radius-sm);
  --mono: ui-monospace, "Cascadia Code", Consolas, monospace;
  --ok: var(--theme-success);
  --ok-bg: #ECFDF3;
  --warn: var(--theme-warning);
  --warn-bg: #FFFBEB;
}

/* chip family (from the Agent's app.css) */
.hub-tree .chip { display: inline-block; border-radius: 999px; padding: 2px 10px; font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.hub-tree .chip.ok { background: var(--ok-bg); color: var(--ok); }
.hub-tree .chip.warn { background: var(--warn-bg); color: var(--warn); }
.hub-tree .chip.claude { background: var(--tint); color: var(--primary-dark); }
.hub-tree .chip.codex { background: #EEF2FF; color: #4338CA; }
.hub-tree .title-line { font-weight: 600; color: var(--ink); }

.hub-tree .tree-summary { color: var(--ink-2); font-size: 13px; margin: 0 0 14px; }
.hub-tree .tree-summary strong { color: var(--ink); font-variant-numeric: tabular-nums; }
.hub-tree .tree-loading, .hub-tree .tree-empty, .hub-tree .err { padding: 18px 2px; }

.hub-tree .tree-projects { display: flex; flex-direction: column; gap: 12px; }

.hub-tree .project-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.hub-tree .project-head {
  width: 100%; background: none; border: none; text-align: left; cursor: pointer;
  display: flex; align-items: center; gap: 12px; padding: 13px 16px;
  color: var(--ink); font-weight: 650; font-size: 14px;
}
.hub-tree .project-head:hover { background: var(--ground); }
.hub-tree .project-name { flex: 0 1 auto; }
.hub-tree .project-badges { margin-left: auto; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.hub-tree .project-body { border-top: 1px solid var(--line); padding: 6px 10px 10px; }

.hub-tree .tree-caret {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; flex: 0 0 20px; padding: 0; cursor: pointer;
  background: none; border: none; color: var(--muted);
}
.hub-tree .tree-caret-spacer { display: inline-block; width: 20px; flex: 0 0 20px; }
.hub-tree .caret-icon {
  width: 0; height: 0; border-style: solid; border-width: 5px 0 5px 7px;
  border-color: transparent transparent transparent currentColor;
  transition: transform .15s ease;
}
.hub-tree .project-head.open .caret-icon,
.hub-tree .conv-row.open .tree-caret .caret-icon { transform: rotate(90deg); }
.hub-tree .tree-caret[aria-expanded]:hover { color: var(--primary-dark); }

.hub-tree .conv-block { border-bottom: 1px solid var(--line); }
.hub-tree .conv-block:last-child { border-bottom: none; }
.hub-tree .conv-row { display: flex; align-items: flex-start; gap: 10px; padding: 10px 6px; }
.hub-tree .conv-row.has-subs { cursor: default; }
.hub-tree .conv-main { flex: 1 1 auto; min-width: 0; }
.hub-tree .conv-title { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.hub-tree .conv-title .file { font-family: var(--mono); font-size: 12.5px; color: var(--primary-dark); word-break: break-all; }
.hub-tree .conv-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 5px; }
.hub-tree .conv-meta .muted { font-variant-numeric: tabular-nums; color: var(--muted); }
.hub-tree .conv-actions { flex: 0 0 auto; }

.hub-tree .tree-view {
  background: var(--tint); color: var(--primary-dark); border: 1px solid transparent; cursor: pointer;
  border-radius: var(--radius-sm); padding: 5px 12px; font-size: 12.5px; font-weight: 600;
}
.hub-tree .tree-view:hover { background: var(--primary); color: #fff; }

.hub-tree .conv-subs { padding: 2px 4px 10px 30px; }
.hub-tree .subagent-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--ground); }
.hub-tree .subagent-table { border-collapse: collapse; width: 100%; }
.hub-tree .subagent-table th {
  text-align: left; font-size: 10.5px; letter-spacing: .06em; text-transform: uppercase;
  color: var(--muted); font-weight: 600; padding: 8px 12px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.hub-tree .subagent-table td { padding: 7px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.hub-tree .subagent-table tr:last-child td { border-bottom: none; }
.hub-tree .subagent-table td.num, .hub-tree .subagent-table th.num { text-align: right; font-variant-numeric: tabular-nums; }
.hub-tree .subagent-table td.file { font-family: var(--mono); font-size: 12px; color: var(--primary-dark); word-break: break-all; }

.hub-tree .orphan-block { margin: 8px 4px 4px 30px; }
.hub-tree .orphan-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }

.hub-tree .project-head:focus-visible,
.hub-tree .tree-caret:focus-visible,
.hub-tree .tree-view:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .hub-tree .caret-icon { transition: none; }
}