/* ============ AI交易引擎 · 机器学习分类算法工作台 ============ */
:root{
  --primary:#2563eb; --primary-d:#1e40af; --accent:#0ea5e9;
  --pos:#16a34a; --neg:#dc2626; --warn:#f59e0b;
  --bg:#f5f7fa; --card:#ffffff; --ink:#1f2937; --sub:#6b7280;
  --line:#e5e7eb; --chip:#eef2ff; --soft:#f8fafc;
  --warn-bg:#fffbeb; --warn-bd:#fde68a; --warn-tx:#92400e;
}
*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px;line-height:1.55;}

/* ---------- 顶栏 ---------- */
.topbar{display:flex;align-items:center;gap:16px;background:#fff;
  border-bottom:1px solid var(--line);padding:11px 22px;position:sticky;top:0;z-index:50;}
.logo{display:flex;align-items:center;gap:11px;}
.logo .mark{width:36px;height:36px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:16px;}
.logo h1{font-size:15px;font-weight:800;letter-spacing:.3px;}
.logo span{font-size:11.5px;color:var(--sub);}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.report-entry{display:inline-flex;align-items:center;gap:7px;text-decoration:none;
  background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;
  font-size:13px;font-weight:700;padding:8px 15px;border-radius:10px;cursor:pointer;
  box-shadow:0 1px 3px rgba(37,99,235,.25);transition:.15s;white-space:nowrap;}
.report-entry:hover{transform:translateY(-1px);box-shadow:0 3px 9px rgba(37,99,235,.34);}
.report-entry .ri-ico{font-size:14px;line-height:1;}
.ds-switch{display:flex;background:#f1f5f9;border-radius:10px;padding:3px;}
.ds-switch button{border:none;background:transparent;padding:8px 15px;border-radius:8px;
  font-size:13px;color:var(--sub);cursor:pointer;transition:.15s;}
.ds-switch button.active{background:#fff;color:var(--primary);font-weight:700;box-shadow:0 1px 3px rgba(0,0,0,.09);}

/* ---------- 布局 ---------- */
.layout{display:flex;min-height:calc(100vh - 59px);}
.sidebar{width:216px;background:#fff;border-right:1px solid var(--line);padding:16px 12px;flex-shrink:0;}
.side-title{font-size:11px;font-weight:700;color:#9ca3af;text-transform:uppercase;letter-spacing:.6px;margin:4px 8px 10px;}
.step{display:flex;align-items:center;gap:11px;padding:9px 10px;border-radius:9px;margin-bottom:2px;
  color:var(--sub);cursor:pointer;transition:.15s;}
.step:hover{background:var(--soft);}
.step .num{width:24px;height:24px;border-radius:50%;background:#eef2f7;color:var(--sub);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex-shrink:0;}
.step .lbl{font-size:13px;font-weight:600;}
.step .lbl small{display:block;font-size:10px;font-weight:400;color:#9ca3af;}
.step.active{background:var(--chip);color:var(--primary);}
.step.active .num{background:var(--primary);color:#fff;}
.step.done .num{background:var(--pos);color:#fff;}
.step.locked{opacity:.45;cursor:not-allowed;}

/* ---------- 主内容 ---------- */
.main{flex:1;padding:22px 28px 60px;overflow:auto;max-width:100%;}
.page-title{font-size:19px;font-weight:800;margin-bottom:3px;}
.page-sub{color:var(--sub);font-size:13px;margin-bottom:18px;}
.panel{display:none;}
.panel.active{display:block;animation:fade .25s ease;}
@keyframes fade{from{opacity:0;transform:translateY(6px);}to{opacity:1;transform:none;}}

.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin-bottom:16px;
  box-shadow:0 1px 2px rgba(0,0,0,.03);}
.card h3{font-size:14px;font-weight:800;margin-bottom:13px;display:flex;align-items:center;gap:8px;}
.card h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);}
.card .desc{font-size:12.5px;color:var(--sub);margin:-6px 0 12px;}

.grid{display:grid;gap:14px;}
.g-2{grid-template-columns:1fr 1fr;}
.g-3{grid-template-columns:repeat(3,1fr);}
.g-4{grid-template-columns:repeat(4,1fr);}
.g-5{grid-template-columns:repeat(5,1fr);}
@media(max-width:1080px){.g-4,.g-5{grid-template-columns:repeat(2,1fr);}.g-3{grid-template-columns:1fr;}}
@media(max-width:820px){.g-2{grid-template-columns:1fr;}.sidebar{width:64px;}.step .lbl{display:none;}.side-title{display:none;}}

.stat-row{display:flex;gap:12px;flex-wrap:wrap;}
.stat{flex:1;min-width:110px;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:12px 14px;}
.stat .v{font-size:21px;font-weight:800;font-family:"SF Mono",Menlo,monospace;}
.stat .l{font-size:11.5px;color:var(--sub);margin-top:2px;}

table{width:100%;border-collapse:collapse;font-size:13px;}
th,td{padding:9px 11px;text-align:center;border-bottom:1px solid var(--line);}
th{background:var(--soft);color:var(--sub);font-weight:700;}
td:first-child,th:first-child{text-align:left;font-weight:600;}
tbody tr:hover{background:var(--soft);}
tr.best{background:#eff6ff;}
tr.best td{font-weight:700;}

/* 数据预览表 */
.tbl-scroll{overflow:auto;max-height:320px;border:1px solid var(--line);border-radius:10px;}
.tbl-scroll table{font-size:12px;white-space:nowrap;}
.tbl-scroll th{position:sticky;top:0;}

/* 模型卡片 */
.model-card{border:2px solid var(--line);border-radius:11px;padding:13px 15px;cursor:pointer;position:relative;transition:.15s;background:#fff;}
.model-card:hover{border-color:#cbd5e1;}
.model-card.sel{border-color:var(--primary);background:var(--chip);}
.model-card.focus{box-shadow:0 0 0 3px rgba(37,99,235,.15);}
.model-card .body{padding-right:28px;}
.model-card .name{font-weight:800;font-size:13.5px;}
.model-card .desc{font-size:11px;color:var(--sub);margin-top:2px;min-height:32px;}
.model-card .tag{font-size:11px;color:var(--primary);margin-top:5px;font-weight:600;background:#fff;border:1px solid #dbeafe;border-radius:5px;padding:3px 6px;display:inline-block;}
.model-card.sel .tag{background:#eff6ff;}
.model-card .check-wrap{position:absolute;top:11px;right:13px;width:20px;height:20px;z-index:2;cursor:pointer;}
.model-card .check{position:absolute;top:0;right:0;width:18px;height:18px;border-radius:50%;border:2px solid var(--line);transition:.15s;}
.model-card.sel .check{border-color:var(--primary);background:var(--primary);}
.model-card.sel .check::after{content:"✓";color:#fff;font-size:11px;position:absolute;top:-2px;left:4px;}
.model-card .check-wrap:hover .check{border-color:var(--primary);}
.model-card .check-wrap:active .check{transform:scale(.95);}

/* 参数面板 */
#s5ParamsTitle{font-weight:800;}
#s5ParamsBody .inline-fields .field{min-width:160px;}

/* 指标卡 */
.metric{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:14px;text-align:center;}
.metric .mv{font-size:24px;font-weight:800;font-family:"SF Mono",Menlo,monospace;color:var(--primary);}
.metric .ml{font-size:11.5px;color:var(--sub);margin-top:3px;}
.metric.hl .mv{color:var(--pos);}

/* 混淆矩阵 */
.cm{display:grid;grid-template-columns:auto 1fr 1fr;gap:4px;font-size:13px;max-width:340px;}
.cm .hl{background:var(--soft);color:var(--sub);font-size:11px;display:flex;align-items:center;justify-content:center;padding:6px;text-align:center;border-radius:6px;}
.cm .cell{height:70px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:19px;border-radius:8px;}
.cm .tp,.cm .tn{background:var(--pos);}
.cm .fp,.cm .fn{background:var(--neg);}
.cm .cell small{font-weight:500;font-size:10px;opacity:.9;margin-top:2px;}

/* 相关性条形 */
.bar-row{display:flex;align-items:center;gap:8px;margin:5px 0;font-size:12px;}
.bar-row .bn{width:180px;text-align:right;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.bar-track{flex:1;height:16px;background:var(--soft);border-radius:4px;position:relative;overflow:hidden;}
.bar-fill{height:100%;border-radius:4px;}
.bar-row .bv{width:60px;font-family:"SF Mono",Menlo,monospace;color:var(--sub);}

/* 控件 */
.field{margin-bottom:12px;}
.field label{display:block;font-size:12.5px;font-weight:600;margin-bottom:5px;}
.field input[type=number],.field input[type=range],.field select{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:13px;background:#fff;}
.field .hint{font-size:11px;color:var(--sub);margin-top:4px;}
.inline-fields{display:flex;gap:14px;flex-wrap:wrap;}
.inline-fields .field{flex:1;min-width:140px;}

.btn{display:inline-flex;align-items:center;gap:7px;border:none;border-radius:9px;padding:10px 18px;
  font-size:13.5px;font-weight:700;cursor:pointer;transition:.15s;}
.btn.primary{background:var(--primary);color:#fff;}
.btn.primary:hover{background:var(--primary-d);}
.btn.ghost{background:#fff;border:1px solid var(--line);color:var(--ink);}
.btn.ghost:hover{background:var(--soft);}
.btn:disabled{opacity:.5;cursor:not-allowed;}
.btn-row{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}

.callout{background:var(--warn-bg);border:1px solid var(--warn-bd);border-radius:10px;padding:12px 16px;
  font-size:12.5px;color:var(--warn-tx);margin:12px 0;}
.callout.info{background:#eff6ff;border-color:#bfdbfe;color:#1e40af;}
.callout.ok{background:#f0fdf4;border-color:#bbf7d0;color:#166534;}

.badge{display:inline-block;background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:4px 10px;font-size:12px;margin:3px 6px 3px 0;}
.badge b{color:var(--primary);}
.param-chip{display:inline-block;background:#e0f2fe;color:#0369a1;border-radius:6px;padding:4px 11px;font-size:12px;font-weight:700;margin:3px 6px 3px 0;}

/* 流程条 */
.flow-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.flow-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:5px 12px;font-size:11.5px;color:var(--sub);}
.flow-item.on{background:var(--chip);color:var(--primary);font-weight:700;border-color:#c7d2fe;}
.flow-item.ok{background:#f0fdf4;color:var(--pos);border-color:#bbf7d0;}
.flow-arr{color:#cbd5e1;font-size:11px;}

/* 前置知识图片 */
.edu-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.edu-item{border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#fff;}
.edu-item.full{grid-column:1/-1;}
.edu-item img{width:100%;display:block;background:#fff;}
.edu-cap{padding:9px 13px;font-size:12px;color:var(--sub);background:var(--soft);border-top:1px solid var(--line);}
.edu-cap b{color:var(--ink);}
@media(max-width:820px){.edu-grid{grid-template-columns:1fr;}}

.chart-box{position:relative;height:300px;}
.pie-wrap{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}
.pie-box{width:150px;height:150px;}
.legend{font-size:12.5px;}
.legend .lg{display:flex;align-items:center;gap:8px;margin-bottom:7px;}
.legend i{width:12px;height:12px;border-radius:3px;display:inline-block;}

.spinner{display:inline-block;width:15px;height:15px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}
.progress{height:8px;background:var(--soft);border-radius:5px;overflow:hidden;margin-top:10px;}
.progress-bar{height:100%;background:var(--primary);width:0;transition:width .2s;}

.footer-note{text-align:center;color:var(--sub);font-size:11.5px;margin-top:30px;padding-top:16px;border-top:1px solid var(--line);}
.hidden{display:none!important;}