:root{color-scheme:light;--bg:#f5f1eb;--panel:#fffaf4;--panel-strong:#2f2a26;--border:#ddd2c3;--text:#211d19;--muted:#756a5e;--accent:#7c4d35;--accent-strong:#5e3523;--danger:#a23d35;--ok:#2f684f}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}button,textarea{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-rows:64px 1fr;height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:var(--panel-strong);color:#fff8ed;border-bottom:1px solid #1e1a17}.brand{display:flex;flex-direction:column;gap:2px;font-weight:700;letter-spacing:-.02em}.account,.brand small{color:#d9cabb;font-size:13px;font-weight:400}.account{display:flex;align-items:center;gap:12px}.logout-button{border:1px solid rgba(255,255,255,.25);background:transparent;color:#fff8ed;border-radius:999px;padding:6px 14px;font-size:12px;font-weight:600}.logout-button:hover{background:rgba(255,255,255,.1)}.workspace{display:grid;grid-template-columns:220px minmax(340px,34vw) 1fr;min-height:0}.sidebar{display:flex;flex-direction:column;gap:18px;padding:20px 16px;border-right:1px solid var(--border);background:#f0e9de;overflow-y:auto}.new-chat-button{border:0;border-radius:12px;background:var(--accent);color:white;padding:10px 14px;font-weight:700;font-size:13px;text-align:left}.sidebar-section{display:flex;flex-direction:column;gap:8px}.sidebar-heading{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:700}.sidebar-empty{color:var(--muted);font-size:13px;list-style:none}.audit-list,.conversation-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}.conversation-item{width:100%;text-align:left;border:0;background:transparent;border-radius:8px;padding:8px 10px;font-size:13px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-item:hover{background:#e5dccb}.conversation-item.active{background:var(--accent);color:white}.audit-item{display:flex;flex-direction:column;gap:2px;padding:8px 10px;border-radius:8px;background:#fffaf4;border:1px solid var(--border);font-size:12px}.audit-time{color:var(--muted);font-size:11px}.audit-target{font-weight:700}.audit-change{color:var(--text)}.audit-status{font-size:11px;font-weight:700;margin-top:2px}.audit-status-executed{color:var(--ok)}.audit-status-cancelled,.audit-status-expired,.audit-status-failed,.audit-status-stale{color:var(--muted)}.chat-panel,.preview-panel{min-height:0}.chat-panel{display:grid;grid-template-rows:auto 1fr auto;grid-gap:16px;gap:16px;padding:24px;border-right:1px solid var(--border);background:var(--panel)}.panel-heading h1,.preview-heading h2{margin:0;font-size:18px}.panel-heading p,.preview-heading p{margin:6px 0 0;color:var(--muted);font-size:14px;line-height:1.4}.messages{display:flex;flex-direction:column;gap:14px;overflow-y:auto;padding-right:4px}.message{max-width:92%;border:1px solid var(--border);border-radius:16px;padding:12px 14px;line-height:1.45;white-space:pre-wrap}.message.user{align-self:flex-end;background:#3b312a;color:#fff9f1;border-color:#3b312a}.message.assistant{align-self:flex-start;background:#ffffff}.message.error{border-color:#e7b0aa;color:var(--danger)}.tool-status{align-self:flex-start;color:var(--muted);font-size:13px;padding:0 4px}.tool-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.tool-pill{border-radius:999px;background:#efe4d7;color:#5b493a;padding:4px 8px;font-size:12px}.composer{display:grid;grid-gap:10px;gap:10px}.composer textarea{min-height:96px;resize:vertical;border:1px solid var(--border);border-radius:14px;padding:12px;background:#fff;color:var(--text)}.composer-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.composer-row span{color:var(--muted);font-size:13px}.refresh-button,.send-button{border:0;border-radius:999px;background:var(--accent);color:white;padding:10px 16px;font-weight:700}.refresh-button:disabled,.send-button:disabled{opacity:.55;cursor:not-allowed}.preview-panel{display:grid;grid-template-rows:auto 1fr;background:#ebe3d8}.preview-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;border-bottom:1px solid var(--border);background:#fffaf4}.preview-frame{width:100%;height:100%;border:0;background:white}.proposal-card{margin-top:12px;border:1px solid var(--accent);border-radius:14px;padding:14px 16px;background:#fff8ee;display:flex;flex-direction:column;gap:8px}.proposal-title{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--accent-strong);font-weight:700}.proposal-target{margin:0;font-weight:700;font-size:15px}.proposal-field{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:13px}.proposal-field-label{color:var(--muted)}.proposal-field-values{display:flex;align-items:baseline;gap:8px;font-weight:700}.proposal-value-from{color:var(--muted);text-decoration:line-through;font-weight:400}.proposal-arrow{color:var(--muted)}.proposal-actions{display:flex;gap:10px;margin-top:4px}.proposal-cancel,.proposal-confirm{flex:1 1;border-radius:10px;padding:9px 12px;font-weight:700;font-size:13px;border:0}.proposal-confirm{background:var(--ok);color:white}.proposal-cancel{background:transparent;border:1px solid var(--border);color:var(--text)}.proposal-cancel:disabled,.proposal-confirm:disabled{opacity:.55;cursor:not-allowed}.proposal-resolution{margin:10px 0 0;font-size:13px;font-weight:700;color:var(--ok)}.proposal-resolution-warning{color:var(--danger)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-form{width:100%;max-width:360px;background:var(--panel);border:1px solid var(--border);border-radius:18px;padding:32px 28px;display:flex;flex-direction:column;gap:14px;box-shadow:0 24px 60px rgba(47,42,38,.12)}.login-form h1{margin:0;font-size:22px}.login-subtitle{margin:-8px 0 8px}.login-field,.login-subtitle{color:var(--muted);font-size:13px}.login-field{display:flex;flex-direction:column;gap:6px}.login-field input{border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:14px;color:var(--text)}.login-error{margin:0;color:var(--danger);font-size:13px}.login-submit{border:0;border-radius:999px;background:var(--accent);color:white;padding:11px 16px;font-weight:700}.login-submit:disabled{opacity:.6;cursor:not-allowed}@media (max-width:1100px){.workspace{grid-template-columns:1fr;grid-template-rows:auto auto 1fr}.sidebar{flex-direction:row;overflow-x:auto}.chat-panel,.sidebar{border-right:0;border-bottom:1px solid var(--border)}.chat-panel{min-height:60vh}.preview-panel{height:60vh}}