:root {
  --bg: #fbfaf9;
  --panel: #ffffff;
  --panel-head: #f6f4f1;
  --border: #e5e1dc;
  --text: #1f1d1b;
  --muted: #6b6560;
  --accent: #b8552b;
  --accent-soft: #f6ece6;
  --row-hover: #faf8f6;
  --code-bg: #f4f1ee;
  --mark: #ffe4a3;
  --shadow: 0 1px 2px rgba(31, 29, 27, .05);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14120f;
    --panel: #1d1a17;
    --panel-head: #232019;
    --border: #322d28;
    --text: #ede9e4;
    --muted: #9b938a;
    --accent: #e08256;
    --accent-soft: #2c211a;
    --row-hover: #232019;
    --code-bg: #14120f;
    --mark: #6b5117;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4);
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  padding: 2.25rem 1.25rem 5rem;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 ui-sans-serif, -apple-system, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
.wrap { max-width: 1100px; margin: 0 auto; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

/* -- masthead ------------------------------------------------------------ */
.masthead { margin-bottom: 1.5rem; }
.masthead h1 { margin: 0 0 .3rem; font-size: 1.55rem; letter-spacing: -.02em; font-weight: 650; }
.masthead .sub { color: var(--muted); font-size: .92rem; margin: 0; }
.crumb {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .85rem; text-decoration: none; margin-bottom: 1rem;
}
.crumb:hover { text-decoration: underline; }

/* -- toolbar ------------------------------------------------------------- */
.toolbar { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; margin-bottom: 1rem; }
.searchbox {
  flex: 1 1 320px; min-width: 0; position: relative;
  display: flex; align-items: center;
}
.searchbox svg { position: absolute; left: .65rem; width: 15px; height: 15px; color: var(--muted); }
.searchbox input {
  width: 100%; padding: .55rem .8rem .55rem 2.1rem;
  border: 1px solid var(--border); border-radius: 8px;
  background: var(--panel); color: var(--text); font: inherit; font-size: .92rem;
}
.searchbox input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.segmented { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.segmented button {
  border: 0; border-left: 1px solid var(--border);
  background: var(--panel); color: var(--muted);
  padding: .55rem .85rem; font: inherit; font-size: .85rem; cursor: pointer;
}
.segmented button:first-child { border-left: 0; }
.segmented button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
select {
  border: 1px solid var(--border); border-radius: 8px; background: var(--panel);
  color: var(--text); font: inherit; font-size: .85rem; padding: .35rem .5rem;
}

/* -- list ---------------------------------------------------------------- */
.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: var(--shadow); overflow: hidden;
}
.panelhead {
  display: flex; flex-wrap: wrap; gap: .75rem; align-items: center;
  padding: .6rem .9rem; background: var(--panel-head);
  border-bottom: 1px solid var(--border);
  font-size: .85rem; color: var(--muted);
}
.panelhead .spacer { margin-left: auto; }
.list { list-style: none; margin: 0; padding: 0; }
.row {
  display: flex; gap: .7rem; align-items: flex-start;
  padding: .8rem .9rem; border-top: 1px solid var(--border);
  position: relative;
}
.row:first-child { border-top: 0; }
.row:hover { background: var(--row-hover); }
.rowicon { flex: none; margin-top: .2rem; color: var(--accent); width: 16px; height: 16px; }
.rowicon.off { color: var(--muted); }
.rowmain { min-width: 0; flex: 1; }
.rowtitle {
  color: var(--text); text-decoration: none; font-weight: 600; font-size: .98rem;
}
.rowtitle::after { content: ""; position: absolute; inset: 0; }
.row:hover .rowtitle { color: var(--accent); }
.rowmeta {
  color: var(--muted); font-size: .8rem; margin-top: .15rem;
  display: flex; flex-wrap: wrap; gap: .1rem .5rem;
}
.rowmeta .sep { opacity: .5; }
.snippet {
  color: var(--muted); font-size: .85rem; margin-top: .3rem;
  overflow: hidden; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
}
.hit { font-size: .82rem; margin-top: .35rem; color: var(--muted); }
.hit .mono { background: var(--code-bg); border-radius: 4px; padding: .1rem .3rem; }
.rowside { flex: none; display: flex; align-items: center; gap: .5rem; position: relative; z-index: 1; }
mark { background: var(--mark); color: inherit; border-radius: 2px; padding: 0 .1em; }

.pill {
  display: inline-block; padding: .1rem .45rem; border-radius: 5px;
  font-size: .72rem; font-weight: 550; white-space: nowrap; text-decoration: none;
  background: var(--accent-soft); color: var(--accent);
}
.pill.off { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.count { color: var(--muted); font-size: .8rem; white-space: nowrap; font-variant-numeric: tabular-nums; }

.empty { padding: 2.5rem; text-align: center; color: var(--muted); }
footer { margin-top: 1.25rem; color: var(--muted); font-size: .8rem; }

/* -- transcript ---------------------------------------------------------- */
.sessionhead { margin-bottom: 1.25rem; }
.sessionhead h1 { margin: 0 0 .4rem; font-size: 1.45rem; letter-spacing: -.02em; font-weight: 650; }
.facts { display: flex; flex-wrap: wrap; gap: .35rem .6rem; color: var(--muted); font-size: .85rem; }
.actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .9rem; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .4rem .7rem; border: 1px solid var(--border); border-radius: 7px;
  background: var(--panel); color: var(--text); text-decoration: none; font-size: .85rem;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent-soft); border-color: transparent; color: var(--accent); }
button.btn { cursor: pointer; font-family: inherit; }
#viewer-actions { display: inline-flex; gap: .5rem; }

.transcript { display: flex; flex-direction: column; gap: .9rem; margin-top: 1.25rem; }
.msg { border: 1px solid var(--border); border-radius: 10px; background: var(--panel); box-shadow: var(--shadow); }
.msg.user { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); }
.msg.sidechain { margin-left: 1.75rem; border-style: dashed; }
.msghead {
  display: flex; align-items: center; gap: .5rem;
  padding: .45rem .8rem; border-bottom: 1px solid var(--border);
  background: var(--panel-head); border-radius: 10px 10px 0 0;
  font-size: .78rem; color: var(--muted);
}
.msg.user .msghead { background: var(--accent-soft); color: var(--accent); }
.who { font-weight: 650; letter-spacing: .02em; text-transform: uppercase; }
.msghead .spacer { margin-left: auto; }
.msgbody { padding: .35rem .8rem .6rem; }
.msgbody > :first-child { margin-top: .5rem; }
.msgbody p, .msgbody ul, .msgbody ol, .msgbody blockquote { margin: .55rem 0; }
.msgbody h1, .msgbody h2, .msgbody h3 { margin: 1rem 0 .4rem; font-size: 1rem; }
.msgbody ul, .msgbody ol { padding-left: 1.3rem; }
.msgbody blockquote {
  border-left: 3px solid var(--border); padding-left: .7rem; color: var(--muted);
}
.msgbody code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .86em; background: var(--code-bg); border-radius: 4px; padding: .1rem .3rem;
}
.msgbody pre {
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px;
  padding: .7rem .8rem; overflow-x: auto; font-size: .82rem; line-height: 1.5;
}
.msgbody pre code { background: none; padding: 0; font-size: inherit; }

details.tool, details.think {
  border: 1px solid var(--border); border-radius: 8px; margin: .55rem 0; background: var(--bg);
}
details.tool > summary, details.think > summary {
  cursor: pointer; padding: .4rem .6rem; font-size: .82rem; color: var(--muted);
  display: flex; align-items: center; gap: .45rem; list-style: none;
}
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: "▸"; font-size: .7em; opacity: .7; }
details[open] > summary::before { content: "▾"; }
details.tool > summary .name { color: var(--text); font-weight: 600; }
details.tool > summary .name.err { color: #c0392b; }
@media (prefers-color-scheme: dark) { details.tool > summary .name.err { color: #ff8a7a; } }
details.tool pre, details.think pre { margin: 0 .6rem .6rem; }
details.think > summary { font-style: italic; }
.clipped { color: var(--muted); font-size: .78rem; padding: 0 .6rem .5rem; }

.notice {
  border: 1px dashed var(--border); border-radius: 10px;
  padding: 1.5rem; text-align: center; color: var(--muted); font-size: .9rem;
}
.pager { display: flex; gap: .6rem; margin-top: 1.5rem; }
.pager .btn { max-width: 45%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: block; }

@media (max-width: 720px) {
  body { padding: 1.25rem .9rem 4rem; }
  .msg.sidechain { margin-left: .6rem; }
  .rowside { display: none; }
}