.message-layout{grid-template-columns:320px 1fr;gap:18px;display:grid}.message-threads{padding:8px}.message-threads button{text-align:left;border:0;border-bottom:1px solid var(--line);background:#fff;border-radius:8px;width:100%;padding:14px;display:block}.message-threads button.active{color:var(--green);background:#e7f3ec}.message-threads small{color:var(--muted);margin-top:5px;display:block}.message-chat{flex-direction:column;min-height:520px;display:flex}.message-list{flex:1;max-height:420px;padding:12px 0;overflow:auto}.message-bubble{background:#f1f5f2;border-radius:12px;max-width:80%;margin:8px 0;padding:12px 15px}.message-bubble p{margin:5px 0}.message-bubble small{color:var(--muted);font-size:10px}@media (max-width:800px){.message-layout{grid-template-columns:1fr}.message-chat{min-height:400px}}