:root{--bg: #0b1320;--panel: #111c2e;--panel2: #16233a;--line: #243149;--text: #dfe7f1;--muted: #7e8ca3;--blue: #018bff;--green: #00b388;--amber: #e2a23c}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}.app{display:flex;flex-direction:column;height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--line);background:var(--panel)}.brand{display:flex;align-items:center;gap:12px}.logo{font-size:28px}.topbar h1{margin:0;font-size:18px}.topbar p{margin:0;font-size:12px;color:var(--muted)}.status .ok{color:var(--green);font-size:12px}.status .off{color:#e25c3c;font-size:12px}.single-column{flex:1;min-height:0;max-width:1000px;width:100%;margin:0 auto}.chat{display:flex;flex-direction:column;height:100%}.messages{flex:1;overflow-y:auto;padding:24px}.examples p{color:var(--muted);font-size:15px;margin:8px 0}.chip{display:block;width:100%;text-align:left;margin:8px 0;padding:14px 18px;background:var(--panel2);border:1px solid var(--line);border-radius:12px;color:var(--text);cursor:pointer;font-size:15px;transition:border-color .15s}.chip:hover{border-color:var(--blue)}.msg{margin:20px 0}.msg.user{text-align:right}.bubble{display:inline-block;padding:14px 20px;border-radius:16px;font-size:16px;line-height:1.6;max-width:90%;text-align:left}.msg.user .bubble{background:var(--blue);color:#fff;border-bottom-right-radius:4px}.msg.agent .bubble{background:var(--panel2);border:1px solid var(--line);border-top-left-radius:4px}.bubble.typing{color:var(--muted);font-style:italic}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:10px}.ex-card{background:var(--panel2);border:1px solid var(--line);border-radius:10px;overflow:hidden}.ex-card img{width:100%;height:92px;object-fit:cover;background:#fff;display:block}.ex-noimg{height:92px;display:flex;align-items:center;justify-content:center;font-size:30px;background:var(--panel)}.ex-meta{padding:8px}.ex-name{font-size:12px;font-weight:600;line-height:1.3}.ex-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}.tag{font-size:10px;padding:2px 6px;border-radius:6px;background:var(--panel);color:var(--muted);border:1px solid var(--line)}.tag.lvl-beginner{color:var(--green)}.tag.lvl-intermediate{color:var(--amber)}.tag.lvl-expert{color:#e25c3c}.trace{font-size:12px;color:var(--muted);margin-top:10px;padding-left:4px}.composer{display:flex;gap:12px;padding:20px;border-top:1px solid var(--line);background:var(--panel)}.composer input{flex:1;padding:14px 18px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--text);font-size:16px}.composer input:focus{outline:none;border-color:var(--blue)}.composer button{padding:0 20px;border-radius:10px;border:none;background:var(--green);color:#04221a;font-weight:700;cursor:pointer}.composer button:disabled{opacity:.5;cursor:not-allowed}.graph-wrap{position:relative;height:100%}.graph-canvas{height:100%;width:100%}.graph-legend{position:absolute;top:12px;left:12px;z-index:5;display:flex;gap:14px;background:#111c2ed9;padding:8px 12px;border-radius:10px;border:1px solid var(--line);font-size:12px}.graph-legend span{display:flex;align-items:center;gap:6px;color:var(--muted)}.graph-legend i{width:11px;height:11px;border-radius:50%;display:inline-block}.graph-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px}