/* Pit Lane — STEM Racing simulator styles (DT Classroom enrichment) */
:root{
  --steel:#d8dce0; --panel:#f3f5f6; --panel-edge:#b9bfc6;
  --tunnel:#14171c; --tunnel-edge:#2a2f38;
  --ink:#22272e; --ink-soft:#5a626c;
  --accent:#ff6b1a; --accent-deep:#d95108;
  --ok:#1f9d55; --warn:#d23b2e;
  --mono:'IBM Plex Mono',Consolas,monospace;
  --body:'IBM Plex Sans',system-ui,sans-serif;
  --display:'Chakra Petch',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  background:var(--steel);
  background-image:repeating-linear-gradient(90deg,rgba(0,0,0,.025) 0 1px,transparent 1px 80px);
  font-family:var(--body);color:var(--ink);min-height:100vh;padding:16px;
}
.rig{max-width:1140px;margin:0 auto}
button{font-family:inherit}

/* nameplate */
.nameplate{display:flex;align-items:center;gap:12px;background:var(--panel);
  border:1px solid var(--panel-edge);border-bottom:3px solid var(--accent);
  padding:10px 16px;margin-bottom:10px;flex-wrap:wrap}
.nameplate .tag{font-family:var(--display);font-weight:700;font-size:13px;
  background:var(--ink);color:#fff;padding:5px 10px;letter-spacing:.08em}
.nameplate h1{font-family:var(--display);font-weight:700;font-size:clamp(15px,2.2vw,19px);
  letter-spacing:.05em;text-transform:uppercase}
.np-right{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.mode-chip{font-family:var(--mono);font-size:11px;font-weight:600;color:var(--accent-deep);
  border:1px dashed var(--accent-deep);padding:4px 8px;text-transform:uppercase}
.icon-btn{background:var(--panel);border:1px solid var(--panel-edge);padding:5px 10px;
  cursor:pointer;font-family:var(--mono);font-size:11px;font-weight:600;color:var(--ink-soft)}
.icon-btn:hover{border-color:var(--ink);color:var(--ink)}
.icon-btn:focus-visible{outline:3px solid var(--accent-deep);outline-offset:1px}

/* lucide icons inline with button/heading text */
.lucide{width:13px;height:13px;vertical-align:-2px;margin-right:4px;stroke-width:2.4}
h3 .lucide,h2 .lucide{width:14px;height:14px;vertical-align:-2px;margin-right:5px}
.vp-flag .lucide{width:11px;height:11px;vertical-align:-1px;margin-right:3px}

/* tabs */
.tabs{display:flex;gap:4px;margin-bottom:12px;flex-wrap:wrap}
.tab{font-family:var(--display);font-weight:700;font-size:12px;letter-spacing:.07em;
  text-transform:uppercase;padding:9px 14px;background:var(--panel);
  border:1px solid var(--panel-edge);border-bottom:3px solid transparent;
  cursor:pointer;color:var(--ink-soft);min-height:36px}
.tab:focus-visible{outline:3px solid var(--accent-deep);outline-offset:1px}
.tab.active{color:var(--ink);border-bottom-color:var(--accent);background:#fff}
.tab.locked{opacity:.45;cursor:not-allowed}
.tab .stepno{font-family:var(--mono);font-size:10px;color:var(--accent-deep);margin-right:5px}

/* panels & layout */
.stage{display:none}
.stage.active{display:block}
.panel{background:var(--panel);border:1px solid var(--panel-edge);padding:14px}
.panel h2{font-family:var(--display);font-size:12px;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-soft);border-bottom:1px solid var(--panel-edge);
  padding-bottom:7px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}
.grid2{display:grid;grid-template-columns:230px minmax(0,1fr);gap:12px}
.grid2r{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:12px}
.grid3{display:grid;grid-template-columns:230px 1fr 200px;gap:12px}
@media(max-width:900px){.grid2,.grid2r,.grid3{grid-template-columns:minmax(0,1fr)}}

/* viewport (dark canvas areas) */
.viewport{background:var(--tunnel);border:1px solid var(--tunnel-edge);
  box-shadow:inset 0 0 36px rgba(0,0,0,.55);position:relative;padding:5px}
.viewport canvas{display:block;width:100%;height:auto}
.vp-label{position:absolute;top:10px;left:12px;font-family:var(--mono);font-size:10px;
  letter-spacing:.12em;color:rgba(255,255,255,.4);text-transform:uppercase;pointer-events:none}
.vp-flag{position:absolute;top:10px;right:12px;font-family:var(--mono);font-size:10px;
  font-weight:600;letter-spacing:.08em;color:#ff5a4d;border:1px solid #ff5a4d;
  padding:3px 7px;display:none;text-transform:uppercase;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:.35}}
/* ── Pit Lane 3D layer ── */
.viewport .v3{position:absolute;inset:5px;display:none;overflow:hidden;z-index:1;background:var(--tunnel)}
.viewport.is3d .v3{display:block}
.viewport.is3d>canvas{visibility:hidden}
.viewport .v3 canvas{display:block;width:100%;height:100%}
.vp-label,.vp-flag,.corner{z-index:3}
.vtog{position:absolute;bottom:10px;right:12px;z-index:4;display:none;border:1px solid rgba(255,255,255,.2)}
.has3d .vtog{display:flex}
.vtog.vcam{right:auto;left:12px;display:none}
.has3d .viewport.is3d .vtog.vcam{display:flex}
.vtog button{font:600 10px var(--mono);letter-spacing:.08em;padding:5px 9px;background:rgba(20,23,28,.85);color:rgba(255,255,255,.6);border:0;cursor:pointer;text-transform:uppercase}
.vtog button.on{background:var(--accent);color:var(--ink)}
.vtog button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.viewport.v3only{display:none}
.has3d .viewport.v3only{display:block}

.corner{position:absolute;width:13px;height:13px;border:2px solid var(--accent);pointer-events:none}
.corner.tl{top:-1px;left:-1px;border-right:none;border-bottom:none}
.corner.tr{top:-1px;right:-1px;border-left:none;border-bottom:none}
.corner.bl{bottom:-1px;left:-1px;border-right:none;border-top:none}
.corner.br{bottom:-1px;right:-1px;border-left:none;border-top:none}

/* controls */
.ctl{margin-bottom:14px}
.ctl label{display:flex;justify-content:space-between;align-items:baseline;
  font-size:12.5px;font-weight:600;margin-bottom:2px}
.ctl label .val{font-family:var(--mono);font-size:12px;color:var(--accent-deep);font-weight:600}
.ctl .hint{font-size:11px;color:var(--ink-soft);line-height:1.35;margin-bottom:6px}
.ctl.locked{opacity:.42;pointer-events:none}
.ctl.locked label .val::after{content:' 🔒';font-size:10px}
input[type=range]{width:100%;appearance:none;-webkit-appearance:none;height:4px;background:var(--ink);outline:none;cursor:pointer}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;
  background:var(--accent);border:2px solid var(--ink);cursor:grab}
input[type=range]:focus-visible::-webkit-slider-thumb{outline:3px solid var(--accent-deep);outline-offset:2px}
input[type=range]::-moz-range-thumb{width:15px;height:15px;border-radius:0;background:var(--accent);border:2px solid var(--ink)}
select,input[type=text],input[type=password],input[type=number]{
  font-family:var(--mono);font-size:12px;padding:6px 8px;border:1px solid var(--panel-edge);
  background:#fff;color:var(--ink);width:100%}
select:focus-visible,input:focus-visible{outline:3px solid var(--accent-deep);outline-offset:1px}
.seg{display:flex;gap:0}
.seg button{flex:1;font-family:var(--mono);font-size:11px;font-weight:600;padding:7px 4px;
  background:#fff;border:1px solid var(--panel-edge);cursor:pointer;color:var(--ink-soft);min-height:32px}
.seg button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.seg button:focus-visible{outline:3px solid var(--accent-deep);outline-offset:-3px;z-index:1;position:relative}
.shape-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px 14px}
.shape-row{display:flex;align-items:center;gap:6px}
.shape-row span:first-child{font-family:var(--mono);font-size:11px;color:var(--ink-soft);width:12px;flex:none;text-align:center}
.shape-row input[type=range]{flex:1;width:auto}
.shape-row .val{font-family:var(--mono);font-size:11px;color:var(--accent-deep);font-weight:600;width:42px;text-align:right;flex:none}

/* buttons */
.big-btn{font-family:var(--display);font-weight:700;font-size:14px;letter-spacing:.08em;
  text-transform:uppercase;background:var(--accent);color:var(--ink);border:2px solid var(--ink);
  padding:12px 24px;cursor:pointer;box-shadow:4px 4px 0 var(--ink);transition:transform .08s,box-shadow .08s;min-height:44px}
.big-btn:hover{transform:translate(-1px,-1px);box-shadow:5px 5px 0 var(--ink)}
.big-btn:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--ink)}
.big-btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:4px 4px 0 var(--ink)}
.big-btn:focus-visible{outline:3px solid var(--accent-deep);outline-offset:3px}
.ghost-btn{font-family:var(--mono);font-size:11px;font-weight:600;background:#fff;
  border:1px solid var(--panel-edge);padding:7px 12px;cursor:pointer;color:var(--ink-soft);min-height:32px}
.ghost-btn:hover{border-color:var(--ink);color:var(--ink)}
.ghost-btn:focus-visible{outline:3px solid var(--accent-deep);outline-offset:1px}

/* readouts & tables */
.readout{display:flex;justify-content:space-between;font-family:var(--mono);font-size:12px;
  padding:5px 0;border-bottom:1px dashed var(--panel-edge)}
.readout b{font-weight:600}
.readout .good{color:var(--ok)}.readout .bad{color:var(--warn)}
table{width:100%;border-collapse:collapse;font-size:12px}
th{font-family:var(--display);font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--ink-soft);text-align:left;padding:6px 8px;border-bottom:2px solid var(--panel-edge)}
td{padding:6px 8px;border-bottom:1px solid var(--panel-edge);font-family:var(--mono);font-size:11.5px}
tr.pass td:first-child{border-left:3px solid var(--ok)}
tr.fail td:first-child{border-left:3px solid var(--warn)}
.pill{display:inline-block;font-family:var(--mono);font-size:10px;font-weight:600;padding:2px 7px;text-transform:uppercase}
.pill.pass{background:rgba(31,157,85,.15);color:var(--ok)}
.pill.fail{background:rgba(210,59,46,.12);color:var(--warn)}

/* material cards */
.mat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin-bottom:14px}
.mat-card{background:#fff;border:1px solid var(--panel-edge);padding:9px;cursor:pointer;text-align:left;min-height:44px}
.mat-card.on{border:2px solid var(--accent);box-shadow:2px 2px 0 var(--accent)}
.mat-card:focus-visible{outline:3px solid var(--accent-deep);outline-offset:1px}
.mat-card h4{font-size:12px;font-weight:600;margin-bottom:3px}
.mat-card .props{font-family:var(--mono);font-size:10px;color:var(--ink-soft);line-height:1.5}
.mat-card.disabled{opacity:.4;pointer-events:none}
.mat-section{font-family:var(--display);font-size:11px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink-soft);margin:12px 0 6px}

/* race lights */
.lights{display:flex;gap:10px;justify-content:center;padding:10px}
.light{width:34px;height:34px;border-radius:50%;background:#2a2f38;border:2px solid #454c57}
.light.on{background:#e63226;box-shadow:0 0 14px rgba(230,50,38,.8)}

/* garage strip */
.garage{display:flex;gap:8px;align-items:center;background:var(--panel);
  border:1px solid var(--panel-edge);padding:8px 12px;margin-bottom:12px;flex-wrap:wrap}
.garage .glabel{font-family:var(--display);font-size:11px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft)}
.garage select{width:auto;min-width:160px}

/* modal */
.modal-bg{position:fixed;inset:0;background:rgba(20,23,28,.6);display:none;
  align-items:center;justify-content:center;z-index:50;padding:16px}
.modal-bg.open{display:flex}
.modal{background:var(--panel);border:1px solid var(--panel-edge);border-top:4px solid var(--accent);
  padding:20px;max-width:560px;width:100%;max-height:88vh;overflow:auto}
.modal h3{font-family:var(--display);font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px}
.frow{display:flex;gap:10px;align-items:center;margin-bottom:10px;font-size:12.5px}
.frow label{flex:1;font-weight:600}
.frow input,.frow select{width:120px}
.note{font-size:11px;color:var(--ink-soft);line-height:1.45;margin:8px 0}

/* results strip */
.results{background:var(--panel);border:1px solid var(--panel-edge);padding:11px 14px;
  font-size:13px;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:10px}
.results .lap{font-family:var(--mono);font-size:21px;font-weight:600}
.results .delta{font-family:var(--mono);font-size:13px;font-weight:600}
.delta.good{color:var(--ok)}.delta.bad{color:var(--warn)}
.results .debrief{flex-basis:100%;font-size:12px;color:var(--ink-soft);
  border-top:1px dashed var(--panel-edge);padding-top:7px}
.idle{color:var(--ink-soft);font-family:var(--mono);font-size:12px}

textarea{font-family:var(--body);font-size:12px;width:100%;border:1px solid var(--panel-edge);padding:6px}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:var(--ink);
  color:#fff;font-family:var(--mono);font-size:12px;padding:10px 18px;display:none;z-index:60}
@media (prefers-reduced-motion: reduce){.vp-flag{animation:none}}

/* ── DT Classroom top bar ── */
.dtbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:#16344c;color:#fff;
  border-radius:10px;padding:9px 14px;margin:0 auto 10px;max-width:1240px;box-shadow:5px 5px 0 #f3c84b}
.dtbar a.dtback{color:#fff;text-decoration:none;font:700 12px var(--body);border:1px solid rgba(255,255,255,.35);
  border-radius:8px;padding:6px 10px;white-space:nowrap}
.dtbar a.dtback:hover,.dtbar a.dtback:focus-visible{background:#fff;color:#16344c;outline:none}
.dtbar .dttitle{font:700 15px var(--display);letter-spacing:.04em}
.dtbar .dtsub{margin-left:auto;font:600 10px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:#c9d4dd}
.rig{max-width:1240px}

/* ── design studio layout ── */
.design-grid{display:grid;grid-template-columns:330px minmax(0,1fr);gap:12px;align-items:start}
@media(max-width:900px){.design-grid{grid-template-columns:minmax(0,1fr)}.design-grid>div:last-child{order:-1}}
.design-grid>.panel{padding:12px}
details.grp{border:1px solid var(--panel-edge);background:#fff;margin-bottom:8px}
details.grp>summary{cursor:pointer;list-style:none;font:700 11.5px var(--display);letter-spacing:.08em;text-transform:uppercase;
  padding:9px 10px;display:flex;justify-content:space-between;align-items:center;color:var(--ink)}
details.grp>summary::-webkit-details-marker{display:none}
details.grp>summary::after{content:'+';font:600 14px var(--mono);color:var(--accent-deep)}
details.grp[open]>summary::after{content:'−'}
details.grp>summary .gtag{font:600 9.5px var(--mono);color:var(--ink-soft);letter-spacing:.04em;margin-left:auto;margin-right:8px;text-transform:none}
details.grp>.gbody{padding:4px 10px 6px;border-top:1px dashed var(--panel-edge)}
details.grp .ctl{margin-bottom:11px}
.ctl .tierb{font:600 9px var(--mono);padding:1px 4px;border:1px solid var(--panel-edge);color:var(--ink-soft);margin-left:5px;vertical-align:1px}
.ctl label .ltxt{flex:1;min-width:0}
.shape-grid{grid-template-columns:1fr}
.shape-row .val{width:46px}
.seg.wrap{flex-wrap:wrap}
.seg.wrap button{flex:1 1 30%}
.toggle{display:flex;align-items:center;gap:8px;font-size:12px}
.toggle input{width:18px;height:18px;accent-color:var(--accent-deep)}
.colors{display:flex;gap:8px}
.colors label{flex:1;display:flex;flex-direction:column;gap:3px;font:600 10px var(--mono);color:var(--ink-soft)}
.colors input[type=color]{width:100%;height:30px;border:1px solid var(--panel-edge);background:#fff;padding:2px;cursor:pointer}
.spons{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.spons select{padding:5px 4px}
.live{font:600 11px var(--mono);padding:6px 8px;background:var(--panel);border-left:3px solid var(--ok);margin:-4px 0 10px}
.live.bad{border-left-color:var(--warn);color:var(--warn)}
.chips{display:flex;gap:6px;flex-wrap:wrap;flex-basis:100%}
.chip{font:600 10px var(--mono);padding:3px 7px;border:1px solid var(--panel-edge);background:#fff;color:var(--ink-soft)}
.chip.warn{border-color:var(--warn);color:var(--warn)}
.chip.ok{border-color:var(--ok);color:var(--ok)}
.illus{font:600 9.5px var(--mono);color:var(--ink-soft);letter-spacing:.06em;text-transform:uppercase}
.preset-row{display:flex;gap:6px;margin-bottom:8px}
.preset-row select{flex:1;min-width:0}
.btn-row{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
.dbar{display:flex;height:12px;border:1px solid var(--panel-edge);background:#fff;margin:6px 0 2px}
.dbar span{display:block;height:100%}
.dlegend{display:flex;flex-wrap:wrap;gap:4px 10px;font:600 10px var(--mono);color:var(--ink-soft)}
.dlegend i{display:inline-block;width:9px;height:9px;margin-right:3px;vertical-align:-1px}
td.src{font-family:var(--body);font-size:10.5px;color:var(--ink-soft);max-width:220px;white-space:normal}
.table-wrap{overflow-x:auto}
.cmp-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px}
.modal.wide{max-width:900px}
.cmp-cv{width:100%;height:auto;display:block;background:#14171c;border:1px solid var(--tunnel-edge);margin-bottom:10px}
td.better{color:var(--ok);font-weight:600}td.worse{color:var(--warn)}
@media(max-width:600px){
  body{padding:8px}
  .nameplate h1{font-size:14px}
  .garage .glabel{display:none}
  .garage select{min-width:0;flex:1 1 100%}
  .garage>span{margin-left:0!important;width:100%}
  .garage input#teamName{flex:1;width:auto!important}
  .tab{padding:8px 9px;font-size:11px}
  .dtbar .dtsub{display:none}
  .vp-label{font-size:8px;letter-spacing:.06em}
  .cmp-grid{grid-template-columns:1fr}
  th,td{padding:5px 5px}
}

/* ── Flow Lab (Simulation Suite tab 4: computed 2D airflow, flowlab.js) ── */
.fl-intro{display:flex;gap:14px;align-items:center;justify-content:space-between;background:var(--panel);border:1px solid var(--panel-edge);
  border-left:4px solid var(--accent);padding:10px 14px;margin-bottom:12px}
.fl-kicker{font:700 12.5px var(--display);letter-spacing:.1em;text-transform:uppercase;color:var(--accent-deep)}
.fl-intro p{font-size:12.5px;color:var(--ink-soft);margin-top:3px;max-width:640px;line-height:1.45}
.fl-intro p b{color:var(--ink)}
.fl-warn{flex:0 1 380px;font:600 10.5px/1.5 var(--mono);color:#7a3606;background:#fff4e8;border:1px dashed var(--accent-deep);padding:7px 10px}
.fl-warn .lucide{color:var(--accent-deep)}
.fl-grid{display:grid;grid-template-columns:240px minmax(0,1fr) 220px;gap:12px;align-items:start}
.fl-main{min-width:0;display:grid;gap:8px}
.fl-setup .ctl{margin-bottom:12px}
.fl-setup .seg button{font-size:10.5px;padding:7px 3px}
.fl-hint{min-height:2.7em}
.fl-setup .toggle{font-weight:600;font-size:12.5px}
.ctl.fl-off{opacity:.45}
.fl-btns{display:flex;gap:6px;flex-wrap:wrap}
.fl-btns .ghost-btn{flex:1 1 auto;padding:7px 8px}
.fl-state{font:600 11px var(--mono);color:var(--accent-deep);margin-top:7px;min-height:16px;line-height:1.4}
.fl-vp canvas{cursor:crosshair}
.fl-iter{position:absolute;top:10px;right:12px;z-index:3;font:600 10px var(--mono);letter-spacing:.1em;color:rgba(255,255,255,.7);
  background:rgba(20,23,28,.7);padding:2px 6px;pointer-events:none}
.fl-iter::before{content:'';display:inline-block;width:6px;height:6px;border-radius:50%;background:#3ddc84;margin-right:6px;vertical-align:1px;box-shadow:0 0 6px #3ddc84}
.fl-vp .vp-label{color:rgba(255,255,255,.7);background:rgba(20,23,28,.7);padding:2px 6px;top:9px;left:10px}
.fl-scale{display:flex;align-items:center;gap:10px;font:600 10.5px var(--mono);color:var(--ink-soft);padding:0 2px}
.fl-grad{flex:1;height:9px;border:1px solid var(--panel-edge);background:linear-gradient(90deg,#11255a,#1584c5,#26cea4,#f4c74a,#eb4b32)}
.fl-msg{font:600 11.5px var(--mono);color:var(--ink-soft);min-height:18px;padding:0 2px;transition:color .3s}
.fl-msg.flash{color:var(--accent-deep)}
.fl-bottom{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:10px;align-items:start}
.fl-bottom .panel{padding:12px}
.fl-profile{display:block;width:100%;height:auto;border:1px solid var(--tunnel-edge);cursor:crosshair}
.fl-readout{font:600 11px var(--mono);color:var(--accent-deep);min-height:18px;margin-top:5px}
.fl-key{display:inline-block;width:16px;height:0;border-top:3px solid #ff6b1a;vertical-align:3px;margin:0 4px 0 2px}
.fl-key-base{border-top:3px dashed #8b939d}
.fl-key-in{border-top:2px dotted #5a626c}
.fl-where{font-size:11px;color:var(--ink-soft);margin-top:6px;min-height:15px}
.fl-tiles{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:8px}
.fl-tile{background:#fff;border:1px solid var(--panel-edge);padding:7px 9px;min-width:0}
.fl-tile small{display:block;font:700 9.5px var(--display);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft)}
.fl-tile strong{display:block;font:600 17px var(--mono);margin-top:3px;white-space:nowrap}
.fl-tile em{display:block;font-style:normal;font-size:10px;color:var(--ink-soft)}
.fl-hero{grid-column:1/-1;border-left:3px solid var(--accent)}
.fl-hero strong{font-size:28px;line-height:1.15}
.fl-tile strong.good,.fl-read b.good{color:var(--ok)}.fl-tile strong.bad{color:var(--warn)}
.fl-read .readout{font-size:11.5px;gap:8px}
.fl-read .readout b{text-align:right}
.fl-actions{display:grid;gap:8px;margin-top:10px}
.fl-actions .big-btn{width:100%;font-size:12px;padding:10px 8px;line-height:1.25}
.fl-actions .ghost-btn{width:100%;text-align:left}
.fl-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}
.fl-cards ol{margin:0 0 10px 18px;font-size:12.5px;line-height:1.5}
.fl-cards li{margin-bottom:5px}
.fl-cards p{font-size:12.5px;line-height:1.5;margin-bottom:8px;color:var(--ink)}
.fl-try{border-top:3px solid var(--accent)}
.fl-foot{margin-top:12px;background:var(--panel);border:1px solid var(--panel-edge);border-left:4px solid var(--ink);padding:11px 14px;
  font-size:11.5px;line-height:1.55;color:var(--ink-soft)}
.fl-foot p+p{margin-top:6px}
.fl-foot b{color:var(--ink)}
@media(max-width:1100px){
  .fl-grid{grid-template-columns:240px minmax(0,1fr)}
  .fl-read{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) minmax(0,.9fr);gap:0 14px;align-items:start}
  .fl-read h2{grid-column:1/-1}
  .fl-read .fl-actions{margin-top:0}
}
@media(max-width:900px){
  .fl-intro{flex-direction:column;align-items:stretch}
  .fl-warn{flex:none}
  .fl-grid{grid-template-columns:minmax(0,1fr)}
  .fl-main{order:-1}
  .fl-bottom,.fl-cards{grid-template-columns:minmax(0,1fr)}
  .fl-read{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .fl-read .fl-actions{grid-column:1/-1;margin-top:10px}
  .fl-hint{min-height:0}
}
@media(max-width:600px){
  .fl-read{display:block}
  .fl-iter{font-size:8px;letter-spacing:.04em;top:auto;bottom:8px;right:8px}
  .fl-vp .vp-label{max-width:calc(100% - 24px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
}

/* ── Race telemetry chart and Engineering Report (ported from the V5 rebuild) ── */
.pa-shell{margin-top:14px}
.pa-head{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:12px}
.pa-head p{font:500 11px var(--mono);color:var(--ink-soft);margin:5px 0 0}
.pa-controls{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.pa-controls button,.pa-actions button{border:1px solid var(--panel-edge);background:#fff;color:var(--ink);padding:7px 10px;font:700 10px var(--mono);letter-spacing:.04em;text-transform:uppercase;cursor:pointer}
.pa-controls button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}
.pa-controls button:hover:not([aria-pressed=true]){background:#e9edf0}
.pa-lab{font:600 9px var(--mono);color:var(--ink-soft);text-transform:uppercase;letter-spacing:.08em}
.pa-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;margin:0 0 12px}
.pa-stats>div{border:1px solid var(--panel-edge);background:#fff;padding:10px 12px}
.pa-stats small{display:block;font:600 9px var(--mono);color:var(--ink-soft);letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px}
.pa-stats strong{font:700 17px var(--mono);color:var(--ink);white-space:nowrap}
#pa-chart{width:100%;min-height:190px}
#pa-chart svg{width:100%;height:auto;display:block;border-radius:8px;touch-action:pan-y;cursor:crosshair}
#pa-chart svg:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.pa-splits{display:flex;gap:7px;flex-wrap:wrap;margin:12px 0}
.pa-splits>span{padding:6px 9px;background:#fff;border:1px solid var(--panel-edge);font:600 10px var(--mono);color:var(--ink-soft)}
.pa-splits b{color:var(--accent-deep)}
.pa-probe{display:flex;flex-wrap:wrap;gap:9px 14px;align-items:center;border-top:1px solid var(--panel-edge);padding-top:11px}
.pa-probe b{font:700 10px var(--mono);color:var(--accent-deep);text-transform:uppercase;letter-spacing:.08em}
.pa-probe span{font:600 11px var(--mono);color:var(--ink-soft)}.pa-probe strong{color:var(--ink)}
.pa-probe small{font:500 10px var(--body);color:var(--ink-soft);margin-left:auto}
.pa-sub{font:500 11px var(--mono);color:var(--ink-soft);margin:0 0 14px}
.pa-actions{float:right;display:flex;gap:7px;flex-wrap:wrap;text-transform:none;letter-spacing:0}
.pa-actions .big-btn{padding:7px 12px;font-size:10px}
.pa-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:16px}
.pa-kpi,.pa-cmp{border:1px solid var(--panel-edge);background:#fff;padding:14px 16px}
.pa-kpi span,.pa-cmp span{display:block;font:600 10px var(--mono);color:var(--ink-soft);text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px}
.pa-kpi strong,.pa-cmp strong{display:block;font:700 20px var(--mono);color:var(--ink)}
.pa-kpi small,.pa-cmp small{display:block;margin-top:5px;font:500 11px var(--mono);color:var(--ink-soft)}
.pa-cols{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:14px;align-items:start}
.pa-mod{border:1px solid var(--panel-edge);background:#fff;padding:14px 16px;margin-bottom:14px}
.pa-mod h3{margin:0 0 6px;font:700 12px var(--display);letter-spacing:.08em;text-transform:uppercase;color:var(--ink)}
.pa-mod>p{margin:0 0 12px;font-size:12px;color:var(--ink-soft);line-height:1.5}
.pa-status{float:right;font:700 10px var(--mono);color:var(--accent-deep)}
.pa-compare{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.pa-rule{display:flex;gap:10px;align-items:flex-start;padding:9px 0;border-top:1px solid #e3e7ea}
.pa-rule:first-child{border-top:0}
.pa-rule-s{flex:0 0 42px;font:700 10px var(--mono);padding:3px 0;text-align:center;border:1px solid}
.pa-rule.ok .pa-rule-s{color:var(--ok);border-color:var(--ok)}.pa-rule.fail .pa-rule-s{color:var(--warn);border-color:var(--warn)}
.pa-rule strong{display:block;font-size:13px}.pa-rule small{display:block;color:var(--ink-soft);font-size:11px;line-height:1.45;margin-top:2px}
.pa-rule button{margin-left:auto;border:1px solid var(--accent);background:#fff;color:var(--accent-deep);padding:6px 9px;font:700 10px var(--mono);text-transform:uppercase;cursor:pointer;white-space:nowrap}
.pa-advice{display:flex;gap:11px;padding:9px 0;border-top:1px solid #e3e7ea}.pa-advice:first-child{border-top:0}
.pa-advice>span{font:700 12px var(--mono);color:var(--accent-deep)}.pa-advice strong{display:block;font-size:13px}.pa-advice p{margin:3px 0 0;font-size:12px;color:var(--ink-soft);line-height:1.5}
@media(max-width:900px){.pa-grid,.pa-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.pa-cols{grid-template-columns:1fr}.pa-probe small{margin-left:0;width:100%}}
@media(max-width:560px){.pa-compare{grid-template-columns:1fr}.pa-actions{float:none;margin-top:8px}.pa-rule{flex-wrap:wrap}.pa-rule button{margin-left:52px}}
@media print{body *{visibility:hidden}#stage-report,#stage-report *{visibility:visible}#stage-report{position:absolute;left:0;top:0;width:100%;display:block!important}.pa-actions,.pa-rule button{display:none!important}}

/* Materials Lab specimen visuals (representative illustrations, not photographs).
   Scoped to cards to preserve the existing stage layout and selection behaviour. */
#matLists .mat-card {
  display:flex;
  flex-direction:column;
  min-height:207px;
  padding:0 0 10px;
  overflow:hidden;
}
#matLists .mat-card .v5-material-visual {
  display:block;
  width:100%;
  height:112px;
  flex:none;
  margin-bottom:9px;
  overflow:hidden;
  background:#0b1825;
  border-bottom:1px solid var(--panel-edge);
}
#matLists .v5-material-svg {display:block;width:100%;height:100%;object-fit:cover}
#matLists .mat-card h4,#matLists .mat-card .props {padding:0 10px}
#matLists .mat-card:focus-visible {outline:3px solid var(--accent-deep);outline-offset:2px}
@media (max-width:540px){
  #matLists .mat-grid {grid-template-columns:repeat(auto-fill,minmax(142px,1fr))}
  #matLists .mat-card .v5-material-visual {height:96px}
}

.dtskip{position:absolute;left:-9999px;top:6px;z-index:1000;background:#f3c84b;color:#17212b;padding:9px 14px;border-radius:8px;font-weight:800;text-decoration:none}
.dtskip:focus{left:8px}
#main:focus{outline:none}