:root{--ink:#1d1d1d;--muted:#666;--line:#d9d9d9;--bg:#f6f6f4;--card:#fff;--accent:#2b4c7e;--ok:#2e7d32;--warn:#b26a00;--bad:#b3261e}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-size:16px;color:var(--ink);background:var(--bg)}
a{color:var(--accent)}
header{background:#fff;border-bottom:1px solid var(--line);padding:10px 16px;display:flex;gap:16px;align-items:center}
header .brand{font-weight:600;text-decoration:none;color:var(--ink);font-size:18px}
header .spacer{flex:1}
header .user{color:var(--muted);font-size:14px}
main{max-width:760px;margin:0 auto;padding:16px}
h1{font-size:22px;margin:8px 0 6px}
h2{font-size:17px;margin:14px 0 6px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:14px}
.flash{background:#fff7e0;border:1px solid #f0d58c;padding:10px 14px;border-radius:8px;margin-bottom:14px}
.btn{display:inline-block;padding:10px 16px;border-radius:8px;border:1px solid var(--accent);background:var(--accent);color:#fff;font-size:16px;cursor:pointer}
.btn.sec{background:#fff;color:var(--accent)}
.btn[disabled]{opacity:.6}
button.link{background:none;border:none;color:var(--accent);cursor:pointer;padding:0;text-decoration:underline}
form.inline{display:inline}
label{display:block;font-size:14px;color:var(--muted);margin:10px 0 4px}
input[type=email],input[type=password],textarea{width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;font-size:16px;font-family:inherit}
.ask textarea{margin-bottom:8px}
.row{display:flex;gap:10px;align-items:center}
.chat{display:flex;flex-direction:column;gap:10px;margin-bottom:12px}
.msg{display:flex}
.msg.q{justify-content:flex-end}
.bubble{max-width:88%;padding:10px 14px;border-radius:14px;white-space:pre-wrap;line-height:1.45}
.msg.q .bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}
.msg.a .bubble{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.a{flex-direction:column;align-items:flex-start}
.rate{color:var(--muted);margin:4px 0 0 6px}
.rate button{background:none;border:1px solid var(--line);border-radius:6px;padding:2px 8px;cursor:pointer;font-size:13px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.chip{background:#fff;border:1px solid var(--line);border-radius:16px;padding:6px 12px;font-size:14px;cursor:pointer;text-align:left}
.tag{display:inline-block;padding:2px 8px;border-radius:12px;font-size:12px;background:#eee}
.tag.warn{background:#fff1d6;color:var(--warn)}.tag.bad{background:#f8e1de;color:var(--bad)}.tag.ok{background:#e6f4e6;color:var(--ok)}
.muted{color:var(--muted)}.small{font-size:13px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:6px;border-bottom:1px solid var(--line);vertical-align:top}
.filters a{margin-right:8px;padding:4px 8px;border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--ink);background:#fff}
.filters a.active{background:var(--accent);color:#fff}
.login{max-width:380px;margin:50px auto}
details summary{cursor:pointer;color:var(--accent)}