:root{--bg:#f4f6fa;--surface:#fff;--ink:#1b2733;--soft:#52606f;--line:#dbe1eb;--accent:#34518a;--ok:#2e6b5b;--err:#a23b3b;--wait:#8a5e12}
@media(prefers-color-scheme:dark){:root{--bg:#0f131a;--surface:#161c25;--ink:#e3e8f0;--soft:#9aa6b5;--line:#28303c;--accent:#90a9db;--ok:#75bba8;--err:#e08a8a;--wait:#d6a85e}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
main{max-width:60rem;margin:0 auto;padding:1.5rem}
h1{font-size:1.4rem;margin:.2rem 0 1rem}
.topbar{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;padding:.6rem 1rem;background:var(--surface);border-bottom:1px solid var(--line)}
.topbar .brand{font-weight:700}
.topbar nav{display:flex;gap:.8rem;flex-wrap:wrap}
.topbar .spacer{flex:1}
.link{background:none;border:0;color:var(--accent);cursor:pointer;font:inherit;padding:0}
.link.err{color:var(--err)}
button{background:var(--accent);color:#fff;border:0;border-radius:5px;padding:.45rem .8rem;font:inherit;cursor:pointer}
input,select,textarea{font:inherit;padding:.4rem .5rem;border:1px solid var(--line);border-radius:5px;background:var(--surface);color:var(--ink);width:100%}
label{display:block;margin:.5rem 0}
.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:1rem;max-width:26rem;margin:1rem 0}
.center{display:grid;place-items:center;min-height:100vh}
.inline{display:flex;gap:.5rem;flex-wrap:wrap;align-items:center;margin:.5rem 0}
.inline input,.inline select{width:auto}
.row{display:flex;gap:.6rem;flex-wrap:wrap;align-items:center}
.cards{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));gap:1rem}
.cards li{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:1rem}
table{width:100%;border-collapse:collapse;font-size:.9rem;margin:1rem 0}
th,td{text-align:left;padding:.45rem .6rem;border-bottom:1px solid var(--line);vertical-align:top}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
.badge{font-size:.72rem;padding:.1rem .4rem;border-radius:4px;background:var(--line)}
.badge.ok{background:color-mix(in srgb,var(--ok) 25%,transparent);color:var(--ok)}
.badge.err{background:color-mix(in srgb,var(--err) 22%,transparent);color:var(--err)}
.badge.wait{background:color-mix(in srgb,var(--wait) 22%,transparent);color:var(--wait)}
.err{color:var(--err)}
.brief{white-space:pre-wrap;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:1rem;font:13px/1.6 ui-monospace,monospace}
.chat-wrap{display:grid;grid-template-columns:14rem 1fr;gap:1rem}
.sessions ul{list-style:none;padding:0;margin:.5rem 0}
.sessions li{padding:.3rem .4rem;border-radius:5px}
.sessions li.on{background:var(--surface)}
.thread{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:1rem;min-height:60vh;display:flex;flex-direction:column}
#messages{flex:1;display:flex;flex-direction:column;gap:.8rem}
.msg{max-width:46rem}
.msg.user .body{background:var(--accent);color:#fff;border-radius:10px 10px 2px 10px;padding:.5rem .8rem;display:inline-block}
.msg.assistant .body{white-space:pre-wrap;background:var(--bg);border:1px solid var(--line);border-radius:10px 10px 10px 2px;padding:.6rem .9rem}
.msg .note{font-size:.8rem;color:var(--wait);margin-bottom:.3rem}
.cites{display:flex;gap:.4rem;flex-wrap:wrap;margin-top:.35rem}
.cite{font-size:.72rem;background:var(--line);padding:.1rem .4rem;border-radius:4px}
.ask{display:flex;gap:.5rem;margin-top:1rem}
.ask input{flex:1}
.hint{color:var(--soft)}
.chip{display:inline-block}
details summary{cursor:pointer;color:var(--accent);margin:.3rem 0}
@media(max-width:40rem){.chat-wrap{grid-template-columns:1fr}}