:root{color:#152018;background:#eef3ef;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{margin:0}button,input{font:inherit}.app-shell{grid-template-rows:auto 1fr auto auto;gap:16px;max-width:1040px;min-height:100vh;margin:0 auto;padding:24px;display:grid}.topbar{border-bottom:1px solid #c7d4ca;justify-content:space-between;align-items:center;gap:16px;padding-bottom:16px;display:flex}h1,p{margin:0}.topbar p{color:#506258;margin-top:4px}.status{text-transform:uppercase;letter-spacing:0;border:1px solid #9eb0a4;border-radius:999px;padding:6px 12px;font-size:12px}.status.online{background:#dff7df;border-color:#7cbf80}.status.offline{background:#f7dfdf;border-color:#c78686}.messages{flex-direction:column;gap:10px;min-height:360px;display:flex;overflow:auto}.message{background:#fff;border:1px solid #d9e1dc;border-radius:8px;padding:12px}.message div{color:#506258;justify-content:space-between;gap:12px;font-size:13px;display:flex}.message p{margin-top:8px}.composer{grid-template-columns:minmax(120px,180px) 1fr auto;gap:8px;display:grid}.composer input,.composer button{border:1px solid #b8c8bd;border-radius:8px;padding:10px 12px}.composer button{color:#fff;cursor:pointer;background:#1f6f4a}.admin-link{color:#1f6f4a}@media (width<=720px){.app-shell{padding:16px}.topbar,.composer{grid-template-columns:1fr;display:grid}}