:root {
  --bg: #f3f6fb; --panel: #ffffff; --ink: #0f1b33; --muted: #5b6b85; --line: #dde4ef;
  --nav: #10244d; --nav-ink: #c9d6f0; --accent: #1f5fe0; --accent-soft: #e6eefc;
  --ok: #1e9e5a; --warn: #d99100; --bad: #d23c3c; --info: #2c7be5;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c1220; --panel: #131b2d; --ink: #e6ecf7; --muted: #8e9ab3; --line: #25304a;
    --nav: #0a1733; --nav-ink: #9fb2d9; --accent: #5b8cff; --accent-soft: #1b2a4a; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--ink); }
.hidden { display: none !important; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.err { color: var(--bad); min-height: 1.2em; }
button { font: inherit; border: 0; border-radius: 8px; padding: 8px 14px; background: var(--accent); color: #fff; cursor: pointer; }
button.ghost { background: var(--accent-soft); color: var(--accent); }
button.danger { background: transparent; color: var(--bad); border: 1px solid var(--bad); }
button.link { background: none; color: var(--nav-ink); padding: 8px 12px; text-align: left; }
input, textarea, select { font: inherit; width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--ink); }
textarea { min-height: 84px; resize: vertical; }

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: 100%; max-width: 340px; display: grid; gap: 10px; }
.login h1 { margin: 0; }

.app { display: grid; grid-template-columns: 210px 1fr; min-height: 100vh; }
.side { background: var(--nav); display: flex; flex-direction: column; padding: 16px 10px; gap: 2px; position: sticky; top: 0; height: 100vh; }
.side .brand { color: #fff; font-weight: 700; font-size: 20px; padding: 4px 12px 16px; }
.side a { color: var(--nav-ink); text-decoration: none; padding: 8px 12px; border-radius: 8px; }
.side a.on, .side a:hover { background: rgba(255,255,255,.1); color: #fff; }
.side #logout { margin-top: auto; }
main { padding: 24px; max-width: 1200px; width: 100%; }
h2 { margin: 0 0 4px; font-size: 22px; }
h3 { margin: 0 0 10px; font-size: 16px; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
.grid { display: grid; gap: 16px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 16px 0; }
.stat { text-align: center; }
.stat b { display: block; font-size: 28px; }
.stat.working b { color: var(--ok); } .stat.waiting b { color: var(--warn); } .stat.failing b { color: var(--bad); } .stat.action b { color: var(--info); }
.two { display: grid; grid-template-columns: 1.2fr 1fr; gap: 16px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.list { list-style: none; margin: 0; padding: 0; }
.list li { padding: 10px 0; border-bottom: 1px solid var(--line); display: flex; gap: 10px; align-items: baseline; }
.list li:last-child { border: 0; }
.list a { color: inherit; text-decoration: none; flex: 1; min-width: 0; }
.list .when { color: var(--muted); font-size: 12px; white-space: nowrap; }

.pill { font-size: 12px; padding: 2px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.pill.ready { background: #e3f6ec; color: var(--ok); } .pill.working, .pill.queued { background: #e6eefc; color: var(--info); }
.pill.waiting { background: #fff4dc; color: var(--warn); } .pill.blocked { background: #fde8e8; color: var(--bad); }
.pill.cancelled { background: var(--line); color: var(--muted); }
@media (prefers-color-scheme: dark) { .pill.ready, .pill.waiting, .pill.blocked { background: var(--accent-soft); } }

.timeline { list-style: none; padding: 0; margin: 0; font-size: 14px; }
.timeline li { padding: 6px 0 6px 14px; border-left: 2px solid var(--line); }
.timeline .actor { font-weight: 600; margin-right: 6px; }
pre.doc { white-space: pre-wrap; word-break: break-word; background: var(--bg); padding: 14px; border-radius: 8px; max-height: 60vh; overflow: auto; font: 13px/1.5 ui-monospace, Menlo, monospace; }
.health td { padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; }
.dot.ok { background: var(--ok); } .dot.bad { background: var(--bad); }
.hit { padding: 10px 0; border-bottom: 1px solid var(--line); }
.hit small { color: var(--muted); display: block; }

@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; }
  .side { position: static; height: auto; flex-direction: row; overflow-x: auto; }
  .side .brand { padding: 8px; } .side #logout { margin: 0; }
  main { padding: 16px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .two { grid-template-columns: 1fr; }
}

/* Library */
.tabs { gap: 4px; border-bottom: 1px solid var(--line); }
.tab { padding: 8px 14px; border-radius: 8px 8px 0 0; text-decoration: none; color: var(--muted); }
.tab.on { color: var(--accent); border-bottom: 2px solid var(--accent); font-weight: 600; }
.thread { display: grid; gap: 14px; max-height: 62vh; overflow: auto; }
.thread .q { justify-self: end; background: var(--accent); color: #fff; padding: 10px 14px; border-radius: 14px 14px 2px 14px; max-width: 80%; }
.thread .a { background: var(--bg); padding: 12px 14px; border-radius: 14px 14px 14px 2px; max-width: 92%; line-height: 1.6; }
.thread .a h3, .thread .a h4 { margin: 8px 0 4px; }
.thread details { margin-top: 10px; font-size: 13px; }
.thread .src { display: block; padding: 4px 0; text-decoration: none; }
.cite { font-size: 12px; text-decoration: none; font-weight: 600; }
.doc .chunk { padding: 10px 0; border-bottom: 1px solid var(--line); }
.doc .chunk .loc { font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.doc .chunk .txt { white-space: pre-wrap; word-break: break-word; }
.doc .chunk.user .txt { background: var(--accent-soft); padding: 8px 10px; border-radius: 8px; }
.doc .chunk.alt { opacity: .6; }
.doc .chunk.hit { outline: 2px solid var(--warn); border-radius: 6px; }
.drop { display: block; border: 2px dashed var(--line); border-radius: 12px; padding: 28px; text-align: center; cursor: pointer; color: var(--muted); margin: 10px 0; }
.drop.over { border-color: var(--accent); color: var(--accent); }
mark { background: #ffe58a; color: inherit; }
@media (prefers-color-scheme: dark) { mark { background: #6b5500; } }