:root{--bg:#0f1115;--panel:#171a21;--panel-2:#1e222b;--border:#2a2f3a;--text:#e7e9ee;--muted:#9aa2b1;--accent:#4f7cff;--accent-hover:#3d68ec;--user-bubble:#2b4066;--assistant-bubble:#1e222b;--err:#ff6b6b;--ok:#5ad19a}*{box-sizing:border-box}body,html{margin:0;padding:0;height:100%}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.5}a{color:var(--accent)}button{cursor:pointer;border:none;border-radius:8px;background:var(--accent);color:#fff;padding:9px 16px;font-size:14px;font-weight:600}button:hover:not(:disabled){background:var(--accent-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--panel-2);color:var(--text);border:1px solid var(--border)}button.danger{background:#3a1e22;color:#ff8a8a;border:1px solid #5a2a30}input,select{width:100%;padding:9px 11px;border-radius:8px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);font-size:14px}label{display:block;font-size:13px;margin:10px 0 4px}.muted,label{color:var(--muted)}.banner{border-radius:8px;padding:9px 12px;margin:10px 0;font-size:14px}.banner.err{background:#3a1e22;color:var(--err)}.banner.ok{background:#14332a;color:var(--ok)}.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:28px}.card h1{margin:0 0 4px;font-size:22px}.chat-shell{display:flex;flex-direction:column;height:100vh;max-width:820px;margin:0 auto}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--panel)}.topbar .title{font-weight:700}.topbar .actions{display:flex;gap:8px;align-items:center}.messages{flex:1 1;overflow-y:auto;padding:18px 16px;display:flex;flex-direction:column;gap:12px}.empty{margin:auto;text-align:center;color:var(--muted);max-width:420px}.bubble{max-width:78%;padding:10px 14px;border-radius:14px;white-space:pre-wrap;word-wrap:break-word}.bubble.user{align-self:flex-end;background:var(--user-bubble);border-bottom-right-radius:4px}.bubble.assistant{align-self:flex-start;background:var(--assistant-bubble);border:1px solid var(--border);border-bottom-left-radius:4px}.composer{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--border);background:var(--panel)}.composer input{flex:1 1}.typing{align-self:flex-start;color:var(--muted);font-size:14px;padding:4px 6px}.admin-shell{max-width:1000px;margin:0 auto;padding:16px}.grid2{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px}.panel h2{margin:0 0 12px;font-size:17px}table{width:100%;border-collapse:collapse;font-size:14px}td,th{text-align:left;padding:7px 8px;border-bottom:1px solid var(--border);vertical-align:top}th{color:var(--muted)}.skill-name,th{font-weight:600}.skill-desc{color:var(--muted);font-size:12.5px;margin-top:2px}.row{display:flex;gap:8px;align-items:center;margin-top:12px;flex-wrap:wrap}.matrix-scroll{max-height:420px;overflow-y:auto}.checkcell{width:42px;text-align:center}.checkcell input{width:18px;height:18px}@media (max-width:760px){.grid2{grid-template-columns:1fr}.bubble{max-width:88%}}