:root{--navy:#142850;--teal:#009688;--teal-d:#00796b;--bg:#f5f7fb;--line:#e3e8f0;--muted:#5b6678;--text:#1b2433;--radius:16px}
*{box-sizing:border-box}html,body{margin:0;height:100%}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--teal-d)}
.topbar{display:flex;align-items:center;gap:16px;padding:10px 24px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.topbar img{height:34px}
.topbar .title{font-weight:600;color:var(--navy);font-size:15px;border-left:1px solid var(--line);padding-left:16px}
.topbar .spacer{flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:999px;background:#fff4d6;color:#7a5600;border:1px solid #f3dc9a}
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;color:var(--navy);padding:8px 14px;border-radius:10px;font-weight:600;font-size:14px;text-decoration:none;cursor:pointer}
.btn.primary{background:var(--teal);border-color:var(--teal);color:#fff}
.btn:hover{filter:brightness(.97)}
/* ---- chat component ---- */
.chat{display:flex;flex-direction:column;height:100%;background:#fff;min-height:0}
.chat-head{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--navy);color:#fff}
.chat-head .av{width:38px;height:38px;border-radius:10px;background:#fff;display:grid;place-items:center;font-size:20px}
.chat-head b{display:block;font-size:15px}.chat-head small{opacity:.8;font-size:12px}
.chat-head .x{margin-left:auto;background:transparent;border:0;color:#fff;font-size:22px;cursor:pointer;opacity:.85}
.msgs{flex:1;overflow-y:auto;padding:18px 16px;display:flex;flex-direction:column;gap:12px;background:linear-gradient(#fafbfd,#f4f6fa)}
.msg{max-width:85%;padding:11px 14px;border-radius:14px;line-height:1.5;font-size:14.5px;white-space:pre-wrap;word-wrap:break-word}
.msg.user{align-self:flex-end;background:var(--teal);color:#fff;border-bottom-right-radius:4px}
.msg.bot{align-self:flex-start;background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px;box-shadow:0 1px 2px rgba(20,40,80,.04)}
.msg.err{background:#fff2f2;border-color:#f3c9c9;color:#8a1f1f}
.src{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.src span{font-size:12px;color:var(--muted)}
.src button{font-size:12px;border:1px solid #bfe3df;background:#eaf7f5;color:var(--teal-d);border-radius:999px;padding:3px 10px;cursor:pointer;font-weight:600}
.src .none{font-size:12px;color:#8a6d00;background:#fff8e1;border:1px solid #f3e2a8;border-radius:999px;padding:3px 10px}
.typing{display:inline-flex;gap:4px}.typing i{width:7px;height:7px;border-radius:50%;background:#9aa6b8;animation:b 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,80%,100%{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
.chips{display:flex;flex-wrap:wrap;gap:8px;padding:0 16px 10px;background:#f4f6fa}
.chips button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 12px;font-size:13px;color:var(--navy);cursor:pointer}
.chips button:hover{border-color:var(--teal);color:var(--teal-d)}
.composer{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:#fff}
.composer input{flex:1;border:1px solid var(--line);border-radius:12px;padding:11px 14px;font-size:14.5px;outline:none}
.composer input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(0,150,136,.12)}
.composer button{background:var(--teal);color:#fff;border:0;border-radius:12px;padding:0 16px;font-weight:600;cursor:pointer}
.composer button:disabled{opacity:.5;cursor:default}
.foot{font-size:11.5px;color:var(--muted);text-align:center;padding:6px 12px 10px;background:#fff}
/* ---- modal ---- */
.modal{position:fixed;inset:0;background:rgba(15,25,45,.45);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal.open{display:flex}
.modal .card{background:#fff;border-radius:var(--radius);max-width:620px;width:100%;max-height:80vh;overflow:auto;padding:22px 24px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.modal h3{margin:0 0 4px;color:var(--navy)}.modal .tag{font-size:12px;color:var(--muted)}
.modal pre{white-space:pre-wrap;font-family:inherit;font-size:14px;line-height:1.6;margin:14px 0 0}