:root{--bg: #0d1117;--panel: #161b22;--border: #30363d;--text: #e6edf3;--muted: #8b949e;--accent: #2f81f7;--green: #3fb950;--red: #f85149;--amber: #d29922}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px}.app{display:flex;min-height:100vh}.sidebar{width:210px;background:var(--panel);border-right:1px solid var(--border);padding:16px 0;flex-shrink:0}.brand{font-weight:700;font-size:16px;padding:0 18px 16px;color:var(--accent)}.nav button{display:block;width:100%;text-align:left;padding:10px 18px;background:none;border:none;color:var(--muted);cursor:pointer;font-size:14px}.nav button.active{background:#1f2630;color:var(--text);border-left:2px solid var(--accent)}.nav button:hover{color:var(--text)}.main{flex:1;padding:24px 28px;overflow-x:hidden}h1{font-size:20px;margin:0 0 4px}h2{font-size:15px;margin:18px 0 10px;color:var(--muted);font-weight:600}.sub{color:var(--muted);margin:0 0 18px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:16px;margin-bottom:16px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}input,select{background:#0d1117;border:1px solid var(--border);color:var(--text);border-radius:6px;padding:7px 9px;font-size:13px;min-width:90px}button.primary{background:var(--accent);color:#fff;border:none;border-radius:6px;padding:9px 16px;cursor:pointer;font-size:13px;font-weight:600}button.primary:disabled{opacity:.5;cursor:default}button.btn-danger{background:none;border:1px solid #b4444e;color:#e46a72;border-radius:6px;padding:5px 10px;cursor:pointer;font-size:12px;font-weight:600}button.btn-danger:hover:not(:disabled){background:#b4444e;color:#fff}button.btn-danger:disabled{opacity:.5;cursor:default}button.btn-rat{background:none;border:1px solid var(--border);color:var(--muted);border-radius:6px;padding:5px 8px;cursor:pointer;font-size:11px;font-weight:600}button.btn-rat:hover:not(:disabled){color:var(--text);border-color:var(--accent)}button.btn-rat:disabled{opacity:.5;cursor:default}button.btn-rat.on-long{background:#14361f;border-color:#2ea043;color:#4ac26b}button.btn-rat.on-short{background:#3a1620;border-color:#b4444e;color:#e46a72}.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh}.login-card{background:var(--panel, #161b22);border:1px solid var(--border);border-radius:10px;padding:28px 32px;width:300px;display:flex;flex-direction:column}.login-card input{background:#0d1117;border:1px solid var(--border);color:var(--text);border-radius:6px;padding:10px 12px;font-size:14px}.pill{display:inline-block;padding:1px 8px;border-radius:10px;font-size:11px;background:#1f2630;border:1px solid var(--border);color:var(--text)}button.ghost{background:none;border:1px solid var(--border);color:var(--text);border-radius:6px;padding:7px 12px;cursor:pointer;font-size:12px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}.card{background:#0d1117;border:1px solid var(--border);border-radius:8px;padding:12px 14px}.card .k{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.4px}.card .v{font-size:19px;font-weight:700;margin-top:4px}.pos{color:var(--green)}.neg{color:var(--red)}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:7px 10px;border-bottom:1px solid var(--border)}th{color:var(--muted);font-weight:600;font-size:12px}.badge{padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600}.badge.robust,.badge.robust_plateau{background:#16331f;color:var(--green)}.badge.acceptable,.badge.moderate{background:#33300f;color:var(--amber)}.badge.overfit,.badge.fragile,.badge.likely_overfit_spike{background:#3a1414;color:var(--red)}.err{color:var(--red);font-size:13px;margin:8px 0;white-space:pre-wrap}.muted{color:var(--muted)}.spinner{color:var(--accent)}.heatmap td{width:38px;height:30px;text-align:center;font-size:10px;border:1px solid var(--bg)}.bar-row{display:flex;align-items:center;gap:8px;margin:3px 0}.bar-track{flex:1;height:14px;background:#0d1117;border-radius:3px;overflow:hidden}.bar-fill{height:100%;background:var(--accent)}@media (max-width: 768px){body{font-size:13px}.app{flex-direction:column}.sidebar{width:100%;flex-shrink:0;padding:0;border-right:none;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}.brand{padding:12px 16px 10px;font-size:15px}.nav{display:flex;flex-direction:row;overflow-x:auto;border-top:1px solid var(--border);-webkit-overflow-scrolling:touch;scrollbar-width:none}.nav::-webkit-scrollbar{display:none}.nav button{width:auto;white-space:nowrap;padding:11px 14px;border-left:none;border-bottom:2px solid transparent}.nav button.active{border-left:none;border-bottom:2px solid var(--accent);background:#1f2630}.sidebar>.muted{padding:10px 16px!important;border-top:1px solid var(--border)}.main{padding:16px 14px}h1{font-size:18px}h2{font-size:14px}.panel{overflow-x:auto;-webkit-overflow-scrolling:touch}table{font-size:12px}th,td{padding:6px 8px;white-space:nowrap}.cards{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}.card .v{font-size:17px}.row{gap:8px}input,select{min-width:0;width:100%}.row>*{flex:1 1 auto}}@media (max-width: 460px){.cards{grid-template-columns:repeat(2,1fr)}.brand{font-size:14px}}