*{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f5f6f8;--panel: #ffffff;--border: #dde1e6;--text: #1c2733;--muted: #6b7785;--accent: #0f62fe;--accent-dark: #0043ce;--danger: #da1e28;--warn-bg: #fff8e1;--warn-border: #f0c419}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:15px}.layout{min-height:100vh;display:flex;flex-direction:column}main{flex:1;padding:24px;max-width:1200px;width:100%;margin:0 auto}.topbar{display:flex;align-items:center;gap:24px;background:#161f29;color:#fff;padding:0 24px;height:56px}.brand{font-weight:700;font-size:17px;white-space:nowrap}.brand-sub{font-weight:400;font-size:13px;color:#9fb0c3;margin-left:6px}.topbar nav{display:flex;gap:4px;flex:1}.topbar nav a{color:#c8d3e0;text-decoration:none;padding:8px 14px;border-radius:6px;font-size:14px}.topbar nav a:hover{background:#24303d;color:#fff}.topbar nav a.active{background:var(--accent);color:#fff}.userbox{display:flex;align-items:center;gap:12px;font-size:14px;color:#c8d3e0}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:16px}.page-title{font-size:20px;margin-bottom:16px;display:flex;align-items:center;gap:12px}.page-title .spacer{flex:1}label{display:block;font-size:13px;color:var(--muted);margin:10px 0 4px}input,select,textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;font-family:inherit;background:#fff;color:var(--text)}textarea.doc-content{font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:13px;min-height:320px}input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border:none;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;background:var(--accent);color:#fff}.btn:hover{background:var(--accent-dark)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:transparent;color:inherit;border:1px solid var(--border)}.btn-ghost:hover{background:#ffffff14}.btn-secondary{background:#e8ecf1;color:var(--text)}.btn-secondary:hover{background:#dbe1e8}.btn-danger{background:transparent;color:var(--danger);border:1px solid transparent;padding:6px 10px}.btn-danger:hover{background:#fde8e8}.btn-sm{padding:6px 10px;font-size:13px}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em}tr:last-child td{border-bottom:none}tr.clickable{cursor:pointer}tr.clickable:hover td{background:#f0f4f9}.badge{display:inline-block;padding:2px 10px;border-radius:20px;font-size:12px;background:#e0e7ff;color:#3730a3;font-weight:500}.alert{padding:12px 16px;border-radius:8px;margin-bottom:14px;font-size:14px}.alert-error{background:#fde8e8;color:#9b1c1c;border:1px solid #f5c2c2}.alert-warn{background:var(--warn-bg);border:1px solid var(--warn-border);color:#7a5d00}.alert-ok{background:#e6f6ec;border:1px solid #a7dcbb;color:#0e6027}.muted{color:var(--muted);font-size:13px}.mt{margin-top:14px}.row{display:flex;gap:12px;align-items:end;flex-wrap:wrap}.row>div{flex:1;min-width:160px}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:#161f29}.login-card{background:#fff;border-radius:12px;padding:36px;width:380px}.login-card h1{font-size:22px;margin-bottom:4px}.login-card p{color:var(--muted);font-size:14px;margin-bottom:12px}.login-card .btn{width:100%;justify-content:center;margin-top:18px}.chat-grid{display:grid;grid-template-columns:280px 1fr;gap:16px;height:calc(100vh - 130px)}.chat-sidebar{display:flex;flex-direction:column;gap:10px;overflow:hidden}.conv-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:6px}.conv-item{padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:#fff;cursor:pointer;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-item:hover{border-color:var(--accent)}.conv-item.active{border-color:var(--accent);background:#eaf1ff}.conv-item .muted{display:block;font-size:11px}.chat-main{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--border);border-radius:10px;overflow:hidden}.chat-messages{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:14px}.msg{max-width:82%;padding:12px 16px;border-radius:12px;white-space:pre-wrap;line-height:1.55;font-size:14px}.msg-user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}.msg-assistant{align-self:flex-start;background:#f0f2f5;border-bottom-left-radius:4px}.msg-assistant code{background:#e2e6ea;padding:1px 5px;border-radius:4px;font-size:13px}.chat-input{display:flex;gap:10px;padding:14px;border-top:1px solid var(--border)}.chat-input textarea{resize:none;height:64px}.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--muted);text-align:center;padding:40px}.typing{align-self:flex-start;color:var(--muted);font-size:13px;font-style:italic}