*{box-sizing:border-box}body{margin:0;font-family:Arial,sans-serif;background:#f6f7f9;color:#111827}a{color:inherit;text-decoration:none}.container{max-width:1100px;margin:0 auto;padding:24px}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:18px}.button{border:0;border-radius:8px;padding:10px 14px;background:#111827;color:#fff;cursor:pointer}.button.secondary{background:#4b5563}.button:disabled{opacity:.6;cursor:not-allowed}.input{width:100%;border:1px solid #d1d5db;border-radius:8px;padding:10px;margin-top:6px}.conversation-row{display:grid;grid-gap:4px;gap:4px;padding:12px;border:1px solid #e5e7eb;border-radius:10px;background:#f9fafb}.conversation-row:hover{background:#f3f4f6}.message{max-width:70%;padding:10px 12px;border-radius:12px}.message.inbound{background:#e5e7eb;justify-self:start}.message.outbound{background:#dbeafe;justify-self:end}