:root{--bg:#f7f6f3;--panel:#fff;--ink:#1f1d1a;--muted:#6b6862;--line:#e5e2dc;--accent:#c96442;--accent-ink:#fff;--user:#ece9e3}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:Inter,ui-sans-serif,system-ui,sans-serif;font-size:15px}.brand,.auth-card h1{font-family:Fraunces,Georgia,Times New Roman,serif}button{cursor:pointer;font:inherit}input,select,textarea{font:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}a{color:var(--accent);cursor:pointer;text-decoration:underline}.linkbtn{color:var(--accent);cursor:pointer;font:inherit;background:0 0;border:none;border-radius:6px;padding:6px 4px;text-decoration:underline}.linkbtn:hover{background:#c9644214}.app{flex-direction:column;height:100%;display:flex}.topbar{border-bottom:1px solid var(--line);background:var(--panel);align-items:center;gap:10px;padding:10px 16px;display:flex}.brand{font-size:18px;font-weight:700}.spacer{flex:1}.tab{color:var(--muted);background:0 0;border:none;border-radius:8px;padding:6px 12px}.tab.active{background:var(--user);color:var(--ink)}.email{color:var(--muted);font-size:13px}.ghost{border:1px solid var(--line);color:var(--ink);background:0 0;border-radius:8px;padding:6px 12px}.auth-wrap{justify-content:center;align-items:center;height:100%;display:flex}.auth-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;flex-direction:column;gap:12px;width:340px;padding:32px;display:flex}.auth-card h1{margin:0;font-size:26px}.auth-card input{border:1px solid var(--line);border-radius:10px;min-height:44px;padding:12px 14px}.auth-card button[type=submit]{background:var(--accent);color:var(--accent-ink);border:none;border-radius:10px;min-height:44px;padding:12px;font-weight:600}.muted{color:var(--muted);font-size:13px}.hint{color:var(--muted);text-align:center;margin:0;font-size:12px}.switch{text-align:center;font-size:13px}.error{color:#b3261e;background:#fbe9e7;border-radius:8px;padding:8px 10px;font-size:13px}.ok{color:#1b5e20;background:#e8f5e9;border-radius:8px;padding:8px 10px;font-size:13px}.chat{flex:1;min-height:0;display:flex}.sidebar{border-right:1px solid var(--line);background:var(--panel);flex-direction:column;gap:10px;width:260px;padding:12px;display:flex}.newchat{background:var(--accent);color:var(--accent-ink);border:none;border-radius:10px;padding:10px;font-weight:600}.conv-list{flex-direction:column;gap:2px;display:flex;overflow-y:auto}.conv{cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:9px 10px;display:flex}.conv:hover,.conv.active{background:var(--user)}.conv-title{text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:14px;overflow:hidden}.del{color:var(--muted);opacity:.45;background:0 0;border:none;border-radius:6px;flex-shrink:0;width:28px;height:28px;font-size:18px;line-height:1}.conv:hover .del,.del:focus-visible{opacity:1}.del:hover{color:var(--ink);opacity:1;background:#0000000f}.main{flex-direction:column;flex:1;min-width:0;display:flex}.model-bar{border-bottom:1px solid var(--line);background:var(--panel);align-items:center;gap:8px;padding:10px 20px;display:flex}.model-bar label{color:var(--muted);font-size:13px}.model-bar select{border:1px solid var(--line);border-radius:8px;padding:6px 10px}.sys-toggle{border:1px solid var(--line);color:var(--muted);background:0 0;border-radius:8px;padding:6px 12px}.sys-toggle.set{color:var(--accent);border-color:var(--accent)}.system-bar{border-bottom:1px solid var(--line);background:var(--panel);padding:12px 20px}.system-bar textarea{border:1px solid var(--line);resize:vertical;border-radius:10px;width:100%;padding:10px 12px;line-height:1.4}.system-actions{gap:8px;margin-top:8px;display:flex}.system-actions button{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:7px 16px}.system-actions button.ghost{border:1px solid var(--line);color:var(--ink);background:0 0}.img-row{flex-wrap:wrap;gap:8px;margin-bottom:8px;display:flex}.img-row img{border:1px solid var(--line);border-radius:10px;max-width:220px;max-height:220px}.attach-row{flex-wrap:wrap;gap:8px;width:100%;max-width:800px;margin:0 auto;padding:8px 20px;display:flex}.attach{position:relative}.attach img{object-fit:cover;border:1px solid var(--line);border-radius:8px;width:64px;height:64px}.attach button{color:#fff;background:#1f1d1a;border:none;border-radius:50%;justify-content:center;align-items:center;width:20px;height:20px;font-size:13px;line-height:1;display:flex;position:absolute;top:-6px;right:-6px}.attach-btn{border:1px solid var(--line);background:0 0;border-radius:12px;padding:0 12px;font-size:18px}.messages{flex:1;padding:24px 0;overflow-y:auto}.empty{text-align:center;color:var(--muted);margin-top:60px}.msg{max-width:760px;margin:0 auto 22px;padding:0 20px}.msg .role{color:var(--muted);margin-bottom:4px;font-size:12px}.msg .bubble{white-space:pre-wrap;line-height:1.6}.msg.user .bubble{background:var(--user);white-space:pre-wrap;border-radius:14px;padding:12px 16px;display:inline-block}.msg.assistant .bubble{white-space:normal}.msg.assistant pre{color:#f7f6f3;background:#1f1d1a;border-radius:10px;padding:14px;font-size:13px;overflow-x:auto}.msg.assistant code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.msg.assistant :not(pre)>code{background:var(--user);border-radius:5px;padding:1px 5px}.chat-err{max-width:760px;margin:0 auto 8px}.composer{gap:8px;width:100%;max-width:800px;margin:0 auto;padding:16px 20px;display:flex}.composer textarea{resize:none;border:1px solid var(--line);border-radius:14px;flex:1;min-height:46px;max-height:200px;padding:12px 14px;line-height:1.4}.composer button{background:var(--accent);color:var(--accent-ink);border:none;border-radius:14px;padding:0 20px;font-weight:600}.composer button:disabled{opacity:.5}.subtabs{gap:8px;padding:16px 24px 0;display:flex}.admin{gap:24px;padding:24px;display:flex;overflow-y:auto}.admin-form-wrap{flex-shrink:0;width:360px}.admin-form{background:var(--panel);border:1px solid var(--line);border-radius:14px;flex-direction:column;gap:6px;padding:20px;display:flex}.admin-form label{color:var(--muted);margin-top:6px;font-size:13px}.admin-form input,.admin-form select{border:1px solid var(--line);border-radius:9px;padding:9px 11px}.admin-form label.row{color:var(--ink);flex-direction:row;align-items:center;gap:8px}.admin-form .row{align-items:center;gap:8px;margin-top:10px;display:flex}.admin-form button[type=submit]{background:var(--accent);color:#fff;border:none;border-radius:9px;padding:10px 16px;font-weight:600}.admin-list{flex:1}.admin-list table{border-collapse:collapse;background:var(--panel);border-radius:14px;width:100%;overflow:hidden}.admin-list th,.admin-list td{text-align:left;border-bottom:1px solid var(--line);padding:11px 14px;font-size:14px}.admin-list th{color:var(--muted);font-size:12px;font-weight:600}.pill{border:1px solid var(--line);background:var(--user);border-radius:20px;padding:2px 12px;font-size:12px}.actions{gap:6px;display:flex}.actions button{border:1px solid var(--line);background:var(--panel);border-radius:7px;padding:4px 10px;font-size:13px}.danger{color:#b3261e}