:root{
  --bg:#081a20; --bg2:#0b2027; --panel:#0f2a33; --panel2:#143843;
  --ink:#e8f1f2; --dim:#9fb6bd; --line:#1e4a57;
  --accent:#c6ee1f; --accent2:#f2a03c; --bad:#e2574c; --good:#7fd6a2;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  display:flex;flex-direction:column;overflow:hidden;
}
.bar{
  display:flex;align-items:baseline;gap:.75rem;flex-wrap:wrap;
  padding:.5rem .9rem;background:var(--bg2);border-bottom:1px solid var(--line);flex:0 0 auto;
}
.bar h1{margin:0;font-size:1.15rem;letter-spacing:.02em}
.bar .sub{color:var(--dim);font-size:.8rem}
.bar-actions{margin-left:auto;display:flex;gap:.4rem;flex-wrap:wrap}
button{
  font:inherit;font-size:.82rem;padding:.35rem .7rem;border-radius:.35rem;cursor:pointer;
  background:var(--panel2);color:var(--ink);border:1px solid var(--line);
}
button:hover{background:#1b4a57}
button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.stage{position:relative;flex:1 1 auto;min-height:0;display:block}
canvas{display:block;width:100%;height:100%;background:#b5c9d6;touch-action:none}
.glerr{position:absolute;inset:auto 1rem 1rem 1rem;background:var(--bad);color:#fff;padding:.6rem;border-radius:.4rem}
.hud,.scope{
  position:absolute;background:rgba(9,29,36,.84);border:1px solid var(--line);
  border-radius:.5rem;padding:.55rem .7rem;backdrop-filter:blur(6px);
  font-size:.8rem;min-width:15rem;max-width:22rem;
}
.hud{top:.7rem;left:.7rem}
.scope{top:.7rem;right:.7rem;min-width:13rem}
.scope h2{margin:0 0 .15rem;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.scope-note{margin:0 0 .45rem;color:var(--dim);font-size:.68rem;line-height:1.35}
.hud-row{display:flex;justify-content:space-between;gap:.6rem;padding:.08rem 0}
.hud-row.wide{display:block}
.hud-row .k{color:var(--dim)}
.hud-row .v{font-variant-numeric:tabular-nums;text-align:right}
.hud-row.wide .v{text-align:left;display:block}
.v.strong{font-weight:700;color:var(--accent)}
.v.phase{color:var(--accent2);margin-top:.35rem;font-style:italic}
.v.fault{color:var(--bad)}
.v.result{margin-top:.25rem;color:var(--good)}
.v.best{margin-top:.2rem;color:var(--dim);font-size:.72rem}
.meter{height:5px;background:#0a222a;border-radius:3px;overflow:hidden;margin:.2rem 0 .35rem}
.meter>span{display:block;height:100%;width:0;background:linear-gradient(90deg,#4aa3c0,var(--accent));transition:width .08s linear}
.overlay,.modal{position:fixed;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;padding:1.2rem;background:rgba(4,14,18,.78)}
.overlay[hidden],.modal[hidden]{display:none!important}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:.6rem;padding:1.1rem 1.3rem;max-width:34rem}
.panel h2{margin:.1rem 0 .6rem;font-size:1.2rem}
.wide-panel{max-width:56rem;max-height:86vh;overflow:auto;position:relative}
.panel .x{position:absolute;top:.5rem;right:.6rem;padding:.1rem .5rem;font-size:1.1rem;line-height:1}
.panel h3{margin:1.3rem 0 .4rem;font-size:.95rem;color:var(--accent);letter-spacing:.02em}
.panel p{margin:.5rem 0}
.verdict{background:#16323b;border-left:3px solid var(--accent);padding:.55rem .75rem;border-radius:0 .3rem .3rem 0}
kbd{font:inherit;font-size:.78rem;background:var(--panel2);border:1px solid var(--line);border-bottom-width:2px;border-radius:.25rem;padding:.05rem .35rem}
.or{color:var(--dim);font-size:.75rem}
.keys{border-collapse:collapse;width:100%;margin:.4rem 0}
.keys td{padding:.3rem .5rem;border-bottom:1px solid var(--line);vertical-align:top;font-size:.85rem}
.keys td:first-child{white-space:nowrap;width:13rem}
.steps{margin:.4rem 0 .4rem 1.1rem;padding:0}
.steps li{margin:.25rem 0}
.gaps{margin:.4rem 0 .4rem 1.1rem;padding:0}
.gaps li{margin:.4rem 0}
.mono{font-family:var(--mono);font-size:.85em;background:#0a222a;padding:.05rem .3rem;border-radius:.2rem}
table.data,table.prov{border-collapse:collapse;width:100%;margin:.5rem 0;font-size:.78rem;display:block;overflow-x:auto}
table.data th,table.data td,table.prov th,table.prov td{border:1px solid var(--line);padding:.22rem .45rem;text-align:left;font-variant-numeric:tabular-nums}
table.data thead th,table.prov thead th{background:var(--panel2);color:var(--accent)}
table.prov td{vertical-align:top;font-size:.76rem}
table.prov td.src{color:var(--dim);width:16rem}
td.tag{font-family:var(--mono);font-size:.68rem;letter-spacing:.03em;white-space:nowrap;width:9rem}
.t-documented{color:#8fd3f4}.t-qualified{color:#c9a7e8}.t-measured{color:var(--accent)}
.t-derived{color:var(--good)}.t-calibrated{color:var(--accent2)}.t-reconstructed{color:#e08a8a}
.tally{font-family:var(--mono);font-size:.82rem;background:#0a222a;padding:.5rem .7rem;border-radius:.35rem}
.tally-note{color:var(--dim);font-size:.78rem}
/* touch controls: only on a coarse pointer */
.touchpad{display:none}
.touchpad button{min-width:3rem;min-height:2.75rem;font-size:.95rem;padding:.3rem .7rem;
  background:rgba(20,56,67,.88);touch-action:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.touchpad button.down{background:#2b6d80;border-color:var(--accent)}
.tp-group{display:flex;gap:.4rem}
@media (pointer:coarse){
  .touchpad{display:flex;justify-content:space-between;gap:.6rem;position:absolute;left:.7rem;right:.7rem;bottom:.7rem;z-index:5;pointer-events:none}
  .touchpad .tp-group{pointer-events:auto}
}
@media (max-width:900px){
  .bar .sub{display:none}
  .bar-actions button{font-size:.76rem;padding:.3rem .55rem}
  .keys td:first-child{white-space:normal;width:38%}
  .panel{padding:1rem .9rem}
}
/* portrait phones and narrow windows: the page scrolls, the court keeps a real height */
@media (max-width:900px) and (min-height:521px){
  body{overflow-x:hidden;overflow-y:auto;height:auto;min-height:100%}
  .stage{display:flex;flex-direction:column;flex:0 0 auto}
  canvas{flex:0 0 auto;height:58vh;height:58svh;min-height:240px}
  .touchpad{position:static;padding:.45rem .4rem 0;pointer-events:auto}
  .hud,.scope{position:static;max-width:none;min-width:0;margin:.4rem}
  .hud{display:grid;grid-template-columns:1fr 1fr;column-gap:1rem}
  .hud-row.wide{grid-column:1/-1}
  .scope{margin-top:0}
}
/* short landscape (phones on their side): overlays stay on the court, compacted */
@media (max-height:520px){
  .bar{padding:.3rem .7rem}
  .bar h1{font-size:1rem}
  .bar-actions button{font-size:.72rem;padding:.22rem .5rem}
  .hud,.scope{font-size:.66rem;min-width:0;max-width:13rem;padding:.35rem .5rem;top:.4rem}
  .hud{left:.4rem;max-width:12rem}
  .scope{right:.4rem}
  .hud-row{padding:0}
  .scope-note{display:none}
  .v.phase,.v.result{margin-top:.1rem}
  .touchpad{left:.4rem;right:.4rem;bottom:.4rem}
}