:root{color:#17201c;font-synthesis:none;text-rendering:optimizelegibility;background:#eef2ed;font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,textarea{font:inherit}button{cursor:pointer}.app-shell{grid-template-columns:280px 1fr;min-height:100vh;display:grid}.sidebar{color:#eaf4ec;background:#17251d;padding:26px 18px}.brand{letter-spacing:-.04em;margin:0 10px 28px;font-size:1.45rem;font-weight:800}.new-chat{color:#fff;text-align:left;background:#2d4938;border:1px solid #52715d;border-radius:12px;width:100%;padding:12px 14px}.conversation-list{gap:6px;margin-top:18px;display:grid}.conversation-list button{color:#aec0b3;text-align:left;text-overflow:ellipsis;white-space:nowrap;background:0 0;border:0;border-radius:10px;padding:11px 12px;overflow:hidden}.conversation-list button:hover,.conversation-list button.selected{color:#fff;background:#26392d}.chat-panel{grid-template-rows:auto 1fr auto auto;min-width:0;height:100vh;display:grid}.chat-panel header{background:#ffffffb8;border-bottom:1px solid #dce3dc;justify-content:space-between;align-items:center;padding:18px 28px;display:flex}.chat-panel header small{color:#758078}.online-dot{background:#52a36b;border-radius:50%;width:8px;height:8px;margin-right:8px;display:inline-block}.messages{padding:36px max(24px,50% - 410px);overflow-y:auto}.message{margin-bottom:28px}.message-role{color:#457052;text-transform:uppercase;margin-bottom:8px;font-size:.78rem;font-weight:800}.message-content{white-space:pre-wrap;line-height:1.7}.message.user .message-content{background:#dfe9df;border-radius:16px 16px 4px;padding:12px 16px;display:inline-block}.message small{color:#9a514b;margin-top:8px;display:block}.empty-state{text-align:center;place-content:center;min-height:60vh;display:grid}.empty-state h1{letter-spacing:-.06em;margin:0;font-size:clamp(2rem,6vw,3.8rem)}.empty-state p{color:#6e7971}.empty-state button{color:#fff;background:#2d5940;border:0;border-radius:12px;justify-self:center;padding:11px 18px}.composer{background:#fff;border:1px solid #ccd7ce;border-radius:18px;align-items:flex-end;gap:12px;width:min(100% - 48px,820px);margin:0 auto 24px;padding:10px;display:flex;box-shadow:0 14px 40px #1e37261a}.composer textarea{resize:none;border:0;outline:0;flex:1;padding:8px}.composer button{color:#fff;background:#2d5940;border:0;border-radius:11px;padding:10px 18px}.composer button:disabled{cursor:not-allowed;opacity:.45}.composer button.stop{background:#9a514b}.error-banner{color:#9a332d;width:min(100% - 48px,820px);margin:0 auto 12px}.loading{color:#6e7971;text-align:center}@media (width<=720px){.app-shell{grid-template-columns:1fr}.sidebar,.chat-panel header small{display:none}}