/* chain-fountain */
:root{
  --bg:#0d1520; --panel:#121d2b; --edge:#22334a; --ink:#e8eef7; --dim:#8ea2bb;
  --faint:#556a86; --accent:#5ee2a0; --bead:#ffcf63; --beaker:#6fa8ff; --warn:#ff7b6b;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.5;
  -webkit-text-size-adjust:100%;min-height:100dvh;display:flex;flex-direction:column}
/* a hidden panel must stay hidden no matter which class also sets display */
[hidden]{display:none !important}

.top{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:flex-end;justify-content:space-between;
  padding:14px 18px 10px;border-bottom:1px solid var(--edge);background:linear-gradient(180deg,#101a27,#0d1520)}
.brand h1{margin:0;font-size:22px;letter-spacing:.2px;font-weight:650}
.tag{margin:2px 0 0;color:var(--dim);font-size:12.5px}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tab{background:#16233340;color:var(--dim);border:1px solid var(--edge);border-radius:7px;
  padding:6px 12px;font:inherit;font-size:13px;cursor:pointer}
.tab:hover{color:var(--ink);border-color:#3a5273}
.tab.on{background:#1d2c40;color:var(--ink);border-color:#42628c}
.tab:focus-visible,.btn:focus-visible,.pre:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

main{flex:1;display:flex;min-height:0}
.panel{display:flex;gap:14px;padding:14px 18px;width:100%;min-height:0}
.panel.wide{display:block;overflow:auto}
.stage{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:10px}
.side{flex:0 0 330px;display:flex;flex-direction:column;gap:12px;overflow:auto;max-height:calc(100dvh - 120px)}

canvas{width:100%;display:block;background:var(--bg);border:1px solid var(--edge);border-radius:9px}
#cv-fountain{height:min(70dvh,620px)}
#cv-drop{height:min(44dvh,380px)}
.plots{display:flex;gap:10px;flex-wrap:wrap}
#cv-plot{flex:1 1 300px;height:190px;min-width:260px}
#cv-audit{flex:1 1 260px;height:190px;min-width:240px}
.mode{margin:0;font-family:var(--mono);font-size:12px;color:var(--dim);min-height:18px}

.ctrls{display:flex;flex-direction:column;gap:9px;background:var(--panel);border:1px solid var(--edge);
  border-radius:9px;padding:11px 12px}
.ctl{display:grid;grid-template-columns:1fr auto;gap:2px 8px;font-size:12.5px;color:var(--dim)}
.ctl span{grid-column:1}
.ctl output{grid-column:2;font-family:var(--mono);color:var(--ink);font-size:12px}
.ctl input[type=range]{grid-column:1/3;width:100%;accent-color:var(--bead);margin:2px 0 0}
.rules{border:1px solid var(--edge);border-radius:7px;margin:0;padding:8px 10px 10px}
.rules legend{color:var(--dim);font-size:12px;padding:0 4px}
.rad{display:block;font-size:12.5px;color:var(--ink);padding:3px 0;cursor:pointer}
.rad input{accent-color:var(--bead);margin-right:6px}
.row{display:flex;gap:8px}
.btn,.pre{background:#1a2a3d;color:var(--ink);border:1px solid #33506f;border-radius:7px;
  padding:7px 11px;font:inherit;font-size:12.5px;cursor:pointer;text-align:left}
.btn{flex:1;text-align:center}
.btn:hover,.pre:hover{background:#22374f;border-color:#4a6d97}
.pre.on{border-color:var(--bead);color:var(--bead)}
.presets{display:grid;grid-template-columns:1fr 1fr;gap:7px}

.read{width:100%;border-collapse:collapse;background:var(--panel);border:1px solid var(--edge);
  border-radius:9px;overflow:hidden;font-size:12.5px}
.read th{text-align:left;font-weight:450;color:var(--dim);padding:5px 10px;white-space:nowrap}
.read td{text-align:right;font-family:var(--mono);padding:5px 10px;color:var(--ink);white-space:nowrap}
.read tr+tr th,.read tr+tr td{border-top:1px solid #1b2a3d}
.note{margin:0;font-size:11.5px;color:var(--faint);line-height:1.45}

.findings{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(360px,100%),1fr));gap:12px;padding-bottom:8px}
.find{background:var(--panel);border:1px solid var(--edge);border-radius:10px;padding:12px 14px}
.find h3{margin:0 0 6px;font-size:14.5px;color:var(--accent);font-weight:600;line-height:1.35}
.find p{margin:0 0 9px;font-size:13px;color:#cfdcec}
.find dl{display:grid;grid-template-columns:1fr auto;gap:2px 10px;margin:0;font-size:12px}
.find dt{color:var(--dim)}
.find dd{margin:0;text-align:right;font-family:var(--mono);color:var(--bead)}

.prose{max-width:74ch;padding-bottom:16px}
.prose h2{font-size:15.5px;margin:18px 0 6px;color:var(--accent);font-weight:600}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{font-size:13.5px;color:#cfdcec}
.prose ul{padding-left:20px}
.prose li{margin-bottom:5px}
.refs li{font-size:12.5px;color:var(--dim)}

.foot{border-top:1px solid var(--edge);padding:9px 18px;color:var(--faint);font-size:11.5px}
.foot p{margin:0 0 3px}
.foot a{color:var(--dim)}

@media (max-width:920px){
  .panel{flex-direction:column}
  .side{flex:1 1 auto;max-height:none}
  #cv-fountain{height:52dvh}
  .presets{grid-template-columns:1fr}
  /* phone widths: long readouts wrap instead of running past the edge */
  .read th,.read td{white-space:normal}
  .read td{overflow-wrap:anywhere}
  .find dd{overflow-wrap:anywhere}
}