:root{
  --bg:#0b0d10; --panel:#12161c; --ink:#e9eef7; --sub:#a6b0be; --accent:#4ad295; --warn:#f25f5c; --mut:#273142;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink)}
header{padding:16px 20px;border-bottom:1px solid var(--mut)}
header h1{margin:0 0 6px 0;font-size:20px}
header p{margin:0;color:var(--sub);font-size:14px}
/* README button */
.readme-btn{position:fixed;top:12px;right:12px;z-index:20}
.controls{display:flex;flex-wrap:wrap;gap:16px;padding:14px 20px;border-bottom:1px solid var(--mut)}
.control{background:var(--panel);padding:10px 12px;border-radius:8px;min-width:260px;flex:1}
.control label{display:block;font-size:13px;margin-bottom:8px;color:var(--sub)}
.control input[type=range]{width:100%}
.toggles{display:flex;gap:8px;align-items:center}
button{background:#1b2330;border:1px solid #314258;color:var(--ink);padding:8px 10px;border-radius:8px;cursor:pointer}
button.active{border-color:var(--accent);box-shadow:0 0 0 1px #2a825b inset}
.status{display:flex;gap:16px;align-items:center;padding:10px 20px;border-bottom:1px solid var(--mut)}
.detect{font-weight:600}
.detect.ok{color:var(--accent)}
.detect.bad{color:var(--warn)}
.fit{color:var(--sub)}
.plot{padding:10px 20px}
canvas{width:100%;height:auto;background:var(--panel);border-radius:8px}
.tooltip{position:absolute;display:none;padding:8px 10px;border-radius:6px;background:#111722;color:#e9eef7;border:1px solid #324055;font-size:12px;pointer-events:none;max-width:260px;z-index:10;box-shadow:0 4px 16px rgba(0,0,0,0.35)}
.readme-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.45);display:none;z-index:18}
.readme-modal{position:fixed;top:20px;right:20px;width:360px;max-width:calc(100% - 40px);background:var(--panel);border:1px solid #324055;border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,0.5);display:none;z-index:19}
.readme-header{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--mut)}
.readme-close{background:#1b2330;border:1px solid #314258;color:var(--ink);padding:4px 8px;border-radius:6px;cursor:pointer}
.readme-content{padding:10px 12px;color:var(--sub);font-size:13px}
.readme-content ul{margin:0 0 0 16px;padding:0 0 8px 0}
.readme-content li{margin-bottom:6px}

/* Visible state */
.readme-overlay.show{display:block}
.readme-modal.show{display:block}
.tables{padding:8px 20px 30px}
.tables-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
table{width:100%;border-collapse:collapse;background:var(--panel);border-radius:8px;overflow:hidden}
th,td{padding:6px 8px;border-bottom:1px solid var(--mut);font-size:12px}
thead th{background:#1a212d;color:var(--sub)}
tfoot td{background:#0f1319;font-weight:600}
@media (max-width: 980px){.tables-grid{grid-template-columns:1fr}}