:root{--blue:#173d62;--text:#243746;--muted:#637583;--line:#dae4eb;--pale:#f1f6fa;--green:#27735d;--white:#fff}
*{box-sizing:border-box}
body{margin:0;background:var(--white);color:var(--text);font-family:"Segoe UI",Arial,sans-serif;font-size:16px;line-height:1.55}
[hidden]{display:none!important}
a{color:var(--blue)}
button,input,textarea{font:inherit}
button{border:0;border-radius:8px;padding:11px 18px;background:var(--blue);color:#fff;cursor:pointer;font-weight:600}
button:hover{background:#245982}button:disabled{opacity:.55;cursor:wait}
:focus-visible{outline:3px solid #518eca;outline-offset:3px}
header{height:76px;padding:0 max(24px,4vw);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px}
.brand{display:flex;gap:12px;align-items:center;text-decoration:none;font-size:20px;font-weight:650;line-height:1.22}
.sub{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:3px}
.shield{display:grid;place-items:center;background:var(--blue);color:#fff;width:40px;height:44px;border-radius:6px 6px 17px 17px;font-size:23px}
#identity{display:flex;align-items:center;gap:17px;font-size:14px;color:var(--muted)}
.quiet{background:transparent;color:var(--blue);font-size:14px;padding:8px 10px}.quiet:hover{background:var(--pale)}
.login{max-width:480px;margin:9vh auto;padding:24px}
.login h1,h1{color:var(--blue);font-weight:600;font-size:31px;line-height:1.27;letter-spacing:-.4px;margin:12px 0 18px}
.login p{color:var(--muted)}.intro{color:var(--green)!important}
.login form{margin-top:24px}.login label{display:block;margin:16px 0 7px;font-size:14px;font-weight:600}
.login input{border:1px solid var(--line);border-radius:7px;padding:12px;width:100%}
.login form button{width:100%;margin:22px 0 5px}
.workspace.with-admin{display:grid;grid-template-columns:minmax(0,1fr) 340px}
.conversation{width:min(100%,850px);height:calc(100dvh - 76px);min-height:440px;margin:0 auto;padding:30px clamp(22px,4vw,48px) 26px;display:flex;flex-direction:column}
.heading{margin:auto 0 24px;text-align:center}.heading p{color:var(--muted);margin:0}
#messages{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;gap:24px;padding:14px 4px 26px}
.message{max-width:min(100%,670px);white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.68}
.message.question{align-self:flex-end;background:var(--pale);padding:12px 17px;border-radius:14px 14px 4px 14px}
.message.answer{align-self:flex-start;padding:0 4px}.message .label{display:block;font-size:13px;font-weight:650;color:var(--green);margin-bottom:7px}
.message a{font-weight:600;text-decoration:underline;text-underline-offset:3px}
#question-form{display:flex;align-items:flex-end;gap:10px;padding:8px 8px 8px 15px;border:1px solid var(--line);border-radius:11px;box-shadow:0 5px 20px #173d620d}
#question{flex:1;min-width:0;min-height:50px;max-height:170px;resize:vertical;border:0;background:transparent;color:var(--text);padding:10px 0;outline:0}
#question:focus-visible{outline:0}#question-form:focus-within{border-color:#76a1c1;box-shadow:0 0 0 3px #c5def0}
#question-form button{margin-bottom:2px}.error{color:#aa2735;font-size:14px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
#admin-sources{height:calc(100dvh - 76px);overflow-y:auto;background:var(--pale);border-left:1px solid var(--line);padding:28px 22px}
.source-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.source-heading h2{font-size:18px;margin:0}
#source-count{background:#dce8f2;border-radius:50%;min-width:28px;height:28px;text-align:center;font-size:14px}
#source-empty{color:var(--muted);font-size:14px}.source{padding:20px 0;border-bottom:1px solid var(--line)}
.source a{font-weight:600;font-size:14px;text-decoration:none}.source a:hover{text-decoration:underline}
.source p{font-size:14px;line-height:1.6;white-space:pre-wrap;max-height:260px;overflow:auto}
#review-panel .source{margin:16px 0}#review-panel .source button{margin:5px 8px 5px 0}
@media(max-width:950px){.workspace.with-admin{display:block}.conversation{height:calc(100dvh - 76px)}#admin-sources{height:auto;max-height:500px;border-left:0;border-top:1px solid var(--line)}}
@media(max-width:600px){header{height:66px;padding:0 18px}.brand{font-size:18px}#user-name{display:none}.conversation{height:calc(100dvh - 66px);min-height:330px;padding:18px 14px 17px}.login{margin:4vh auto;padding:22px}h1{font-size:27px}.message{max-width:93%}#question-form{gap:5px;padding-left:11px}#question-form button{padding:11px}}