/* Layout idea: black tie. Two rounded charcoal panels on a darker ground, off-white type and controls. Color appears only where the instrument produces it: laser light and dye. */
:root{
  color-scheme: dark;
  --bg:#131416;         /* ground */
  --panel:#1b1c1f;      /* charcoal panel */
  --raised:#27282c;
  --line:#36373c;
  --ink:#f2eee4;        /* off white */
  --muted:#a39f95;
  --laser:#56ccf2;      /* 488 nm excitation */
  --fitc:#6fe07d;       /* FITC emission, about 525 nm */
  --pe:#ffa94d;         /* PE emission, about 575 nm */
  --both:#ffe066;       /* double-positive events */
  --neg:#8d8b85;        /* unstained / double-negative */
  --flag:#ff7aa8;       /* needs attention */
  --r-lg:22px; --r-md:14px; --r-sm:10px;
  --display:"Instrument Serif","Iowan Old Style",Georgia,serif;
  --body:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.45;display:grid;grid-template-rows:auto 1fr;gap:12px;padding:12px;min-height:0}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

header{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;padding:2px 8px}
h1{font-family:var(--display);font-weight:400;font-size:29px;line-height:1;letter-spacing:.005em;margin:0;white-space:nowrap}
.tabs{display:flex;flex-wrap:wrap;gap:6px;flex:1 1 auto}
.pill{background:transparent;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:13.5px;color:var(--muted);transition:background .2s,color .2s,border-color .2s}
.pill:hover{color:var(--ink);border-color:var(--muted)}
.pill[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--bg);font-weight:600}
.synthetic{font-family:var(--mono);font-size:11.5px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 12px;white-space:nowrap}

main{display:grid;grid-template-columns:minmax(0,1fr) 420px;gap:12px;min-height:0}
#stage{position:relative;min-height:0;min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:var(--r-lg);background:radial-gradient(ellipse at 45% 38%,#26272b 0%,#17181a 62%,#131416 100%)}
#scene{display:block;width:100%;height:100%;touch-action:pan-y;cursor:grab}
#scene:active{cursor:grabbing}
#labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
#labels span{position:absolute;left:0;top:0;white-space:nowrap;font-family:var(--mono);font-size:11.5px;line-height:1;padding:5px 9px;border-radius:999px;background:rgba(19,20,22,.82);border:1px solid var(--line)}
.card{position:absolute;background:rgba(19,20,22,.8);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--r-md);padding:10px 12px}
.card h3{font-family:var(--mono);font-weight:500;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 5px}
.card canvas{display:block}
.inset{left:14px;top:14px;width:212px}
.inset p{margin:5px 0 0;font-family:var(--mono);font-size:11px;line-height:1.5}
.hint{position:absolute;right:18px;top:14px;font-family:var(--mono);font-size:11.5px;color:var(--muted);pointer-events:none}
.dock{position:absolute;left:14px;right:14px;bottom:14px;display:flex;flex-direction:column;gap:8px;align-items:flex-start;pointer-events:none}
.dock>*{pointer-events:auto}
#status{background:rgba(52,18,32,.92);border:1px solid var(--flag);color:#ffd9e6;border-radius:var(--r-md);padding:8px 13px;font-size:13px;max-width:60ch}
#status[hidden]{display:none}
#caption{background:rgba(19,20,22,.8);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:var(--r-md);padding:8px 13px;font-size:13.5px;max-width:62ch;margin:0}
.steps{display:flex;flex-wrap:wrap;gap:6px}
.steps .pill{background:rgba(19,20,22,.82);font-size:12.5px;padding:5px 12px}
.steps .pill b{font-family:var(--mono);font-weight:500;margin-right:6px}
.steps .pill[aria-pressed="true"]{background:var(--ink)}

aside{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px 20px 20px;display:flex;flex-direction:column;gap:12px;overflow-y:auto;min-height:0;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
aside>*{flex-shrink:0}
.eyebrow{font-family:var(--mono);font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;margin:0}
h2{font-family:var(--display);font-weight:400;font-size:26px;line-height:1.12;margin:4px 0 0;text-wrap:balance}
.seg{display:flex;flex-wrap:wrap;gap:4px;background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:4px}
.seg button{flex:1 1 auto;background:transparent;border:0;border-radius:14px;padding:7px 10px;font-size:13px;color:var(--muted);transition:background .2s,color .2s}
.seg button:hover{color:var(--ink)}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg);font-weight:600}
.seg button.right{box-shadow:inset 0 0 0 2px var(--fitc)}
.plotwrap{position:relative;background:#0f1012;border:1px solid var(--line);border-radius:var(--r-md);padding:8px;transition:box-shadow .3s}
.plotwrap.pulse{box-shadow:0 0 0 2px var(--ink)}
#plot{display:block;width:100%;touch-action:none}
.small{margin:0;font-size:12.5px;color:var(--muted)}
#inspect{font-family:var(--mono);font-size:12px;color:var(--ink);min-height:1.45em}
.gates{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:5px}
.gates li{width:100%;display:grid;grid-template-columns:12px 1fr auto auto;align-items:center;gap:10px;padding:8px 12px;background:var(--raised);border:1px solid transparent;border-radius:var(--r-sm);font-size:13.5px;text-align:left;transition:border-color .2s}
.gates i{width:12px;height:12px;border-radius:4px;border:2px solid currentColor}
.gates .n{font-family:var(--mono);font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.gates .p{font-family:var(--mono);font-weight:500;font-variant-numeric:tabular-nums;min-width:5ch;text-align:right}
.note{margin:0;font-size:13.5px;color:var(--muted);max-width:65ch}

/* adjustments */
.group{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-md);padding:13px 15px 15px;display:flex;flex-direction:column;gap:12px}
.group h3{font-family:var(--mono);font-weight:500;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0}
.row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px}
.btn{background:transparent;border:1px solid var(--line);border-radius:999px;padding:7px 18px;font-size:13.5px;transition:border-color .2s}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--ink);border-color:var(--ink);color:var(--bg);font-weight:600;min-width:9.5ch}
.total{font-family:var(--mono);font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;margin-left:auto}
.switch{display:inline-flex;align-items:center;gap:10px;background:none;border:0;padding:2px 0;font-size:13.5px}
.switch .knob{position:relative;width:42px;height:24px;border-radius:999px;background:var(--raised);border:1px solid var(--line);transition:background .2s,border-color .2s;flex:none}
.switch .knob::after{content:"";position:absolute;left:2px;top:2px;width:18px;height:18px;border-radius:50%;background:var(--muted);transition:transform .2s,background .2s}
.switch[aria-pressed="true"] .knob{background:var(--ink);border-color:var(--ink)}
.switch[aria-pressed="true"] .knob::after{transform:translateX(18px);background:var(--bg)}
.slider{display:grid;grid-template-columns:1fr auto;align-items:center;gap:2px 10px;font-size:13px}
.slider output{font-family:var(--mono);font-size:12px;color:var(--bg);background:var(--ink);border-radius:999px;padding:2px 9px;font-variant-numeric:tabular-nums;min-width:6ch;text-align:center}
.slider input{grid-column:1/-1;width:100%;height:26px;margin:0;background:transparent;-webkit-appearance:none;appearance:none}
.slider input::-webkit-slider-runnable-track{height:8px;border-radius:999px;background:linear-gradient(to right,var(--ink) var(--p,50%),var(--raised) var(--p,50%))}
.slider input::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;margin-top:-7px;border-radius:50%;background:var(--ink);border:5px solid var(--bg);box-shadow:0 0 0 1.5px var(--ink)}
.slider input::-moz-range-track{height:8px;border-radius:999px;background:var(--raised)}
.slider input::-moz-range-progress{height:8px;border-radius:999px;background:var(--ink)}
.slider input::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:var(--ink);border:5px solid var(--bg);box-shadow:0 0 0 1.5px var(--ink)}
.slider input:disabled{opacity:.35}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.tile{display:flex;flex-direction:column;gap:3px;text-align:left;background:var(--raised);border:1px solid transparent;border-radius:var(--r-sm);padding:11px 13px;transition:border-color .2s,transform .1s}
.tile:hover{border-color:var(--muted)}
.tile:active{transform:scale(.98)}
.tile b{font-size:13.5px;font-weight:600}
.tile span{font-size:12px;line-height:1.35;color:var(--muted)}
.tile[aria-pressed="true"]{border-color:var(--flag)}
.tile[aria-pressed="true"] b{color:var(--flag)}
.tile.wide{grid-column:1/-1;background:transparent;border-color:var(--line);align-items:center}

@media (max-width:900px){
  html,body{height:auto}
  body{display:block}
  header{margin-bottom:12px}
  main{display:block}
  #stage{height:560px;margin-bottom:12px}
  aside{overflow:visible}
  .hint{display:none}
}
@media (max-width:560px){ .inset{display:none} }
@media (prefers-reduced-motion:reduce){ *{transition:none !important} }

/* site shell */
.brand{color:inherit;text-decoration:none}
.tabs.sub{flex:1 1 100%;order:5}
.tabs.sub .pill{font-size:13px;padding:5px 13px}
a.pill{text-decoration:none;display:inline-block}
.pill.ext::after{content:" \2197";font-size:11px}
.msg{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:24px;text-align:center;font-size:15px;color:var(--muted)}
.gates .sub{font-family:var(--mono);font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}

/* overview page */
body.home{display:block;height:auto;max-width:1240px;margin:0 auto;padding:28px 20px 60px}
body.home header{padding:0;margin-bottom:8px}
body.home h1{font-size:44px}
.lede{font-size:17px;color:var(--muted);max-width:62ch;margin:10px 0 26px}
.filter{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:26px}
.cat{margin:0 0 30px}
.cat h2{font-size:28px;margin:0 0 12px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:12px}
.demo{display:flex;flex-direction:column;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px 16px;color:inherit;text-decoration:none;transition:border-color .2s,transform .15s}
.demo:hover{border-color:var(--ink);transform:translateY(-2px)}
.demo canvas{display:block;width:100%;height:84px;border-radius:var(--r-sm);background:#0f1012}
.demo b{font-family:var(--display);font-weight:400;font-size:23px;line-height:1.1}
.demo span{font-size:13.5px;color:var(--muted)}
.demo em{font-family:var(--mono);font-style:normal;font-size:11.5px;color:var(--ink);margin-top:auto;padding-top:6px}