:root{color-scheme:dark;background:#0b1220;color:#e5edf8;font-family:Inter,Arial,sans-serif}*{box-sizing:border-box}body{margin:0}.shell{display:grid;grid-template-columns:360px 1fr;min-height:100vh}aside{background:#0f172a;border-right:1px solid #253047;padding:18px;overflow:auto}main{display:flex;flex-direction:column;min-width:0}.messages{flex:1;overflow:auto;padding:22px;display:flex;flex-direction:column;gap:12px}.msg{max-width:900px;padding:13px 15px;border:1px solid #2d3b55;border-radius:14px;white-space:pre-wrap;line-height:1.45}.msg.user{align-self:flex-end;background:#1d4ed8}.msg.agent{align-self:flex-start;background:#111c32}.msg.system{align-self:center;background:#33250f;border-color:#6b4e16;color:#f9d98b}.msg.confirmation_required{background:#32111a;border-color:#8b2646}.confirm-actions{display:flex;gap:8px;margin-top:10px}button{background:#2563eb;color:#fff;border:0;border-radius:10px;padding:10px 12px;cursor:pointer;margin:4px 0}button.secondary{background:#334155}button.danger{background:#be123c}button:hover{filter:brightness(1.08)}form{display:flex;gap:10px;padding:16px;border-top:1px solid #253047;background:#0f172a}input{flex:1;background:#111827;color:#fff;border:1px solid #374151;border-radius:12px;padding:13px}h1{margin:0 0 6px;font-size:24px}p{color:#94a3b8}.card{display:flex;flex-direction:column;gap:6px;background:#111827;border:1px solid #273449;border-radius:12px;padding:12px;margin:10px 0}.card span{white-space:pre-wrap;color:#cbd5e1}pre{white-space:pre-wrap;word-break:break-word;background:#020617;border:1px solid #263348;padding:10px;border-radius:10px;max-height:300px;overflow:auto}@media(max-width:900px){.shell{grid-template-columns:1fr}aside{border-right:0;border-bottom:1px solid #253047}}