/* =============================================================================
   GDR-1200 SIMULATOR  |  Kutlwano Holdings  |  Gnomon Decagonal Rotor Programme
   Locked brand system: near-black #0A0A0A, white, single accent Kutlwano red
   #C1272D. Teal/gold only inside technical figures. Bebas Neue + Montserrat.
   ============================================================================= */

@font-face{font-family:'Bebas Neue';src:url('../assets/fonts/bebas-neue.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Montserrat';src:url('../assets/fonts/montserrat-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Montserrat';src:url('../assets/fonts/montserrat-500.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Montserrat';src:url('../assets/fonts/montserrat-600.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'Montserrat';src:url('../assets/fonts/montserrat-700.woff2') format('woff2');font-weight:700;font-display:swap}

:root{
  --black:#0A0A0A; --surface:#141414; --surface2:#1a1a1a; --line:#2a2a2a;
  --white:#FFFFFF; --grey:#9a9a9a; --grey2:#6a6a6a;
  --red:#C1272D; --red-dim:#7d1a1e;
  --teal:#2E8B7F; --gold:#C8A23C;
  --head:'Bebas Neue',Impact,sans-serif;
  --body:'Montserrat',system-ui,sans-serif;
  --ease:cubic-bezier(.25,.46,.45,.94);
  --gut:clamp(14px,2.2vw,26px);
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{
  background:var(--black);color:var(--white);font-family:var(--body);
  font-size:15px;line-height:1.5;overflow:hidden;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,.head{font-family:var(--head);font-weight:400;letter-spacing:.03em;line-height:.98;text-transform:uppercase}
.mono{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
button{font-family:var(--body);cursor:pointer;color:inherit;background:none;border:none}
img{max-width:100%;display:block}
::selection{background:var(--red);color:#fff}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#333;border-radius:6px}
::-webkit-scrollbar-track{background:transparent}

/* ---- drafting crosshair background motif ---- */
.crosshair-field{position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(ellipse 90% 90% at 50% 40%,#000 40%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 90% 90% at 50% 40%,#000 40%,transparent 100%)}

/* ============================ APP SHELL ============================ */
#app{position:relative;z-index:1;height:100vh;height:100dvh;display:flex;flex-direction:column}

/* running header */
header.topbar{display:flex;align-items:center;gap:var(--gut);padding:10px var(--gut);
  border-bottom:1px solid var(--line);background:rgba(10,10,10,.85);backdrop-filter:blur(8px);
  flex:0 0 auto;z-index:20}
.brandmark{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brandmark img{height:30px;width:auto;filter:none}
.brandmark .rule{width:1px;height:26px;background:var(--line)}
.brandmark .prog{font-family:var(--head);font-size:16px;letter-spacing:.11em;line-height:1;color:var(--white)}
.brandmark .prog small{display:block;font-family:var(--body);font-size:8.5px;letter-spacing:.24em;color:var(--grey);margin-top:3px;text-transform:uppercase;font-weight:600}
.doccode{margin-left:auto;font-size:9.5px;letter-spacing:.18em;color:var(--grey2);text-transform:uppercase;text-align:right;flex:0 0 auto}
.doccode b{color:var(--red);font-weight:600}

/* tab nav */
nav.tabs{display:flex;gap:2px;padding:0 var(--gut);border-bottom:1px solid var(--line);
  background:var(--black);flex:0 0 auto;overflow-x:auto;overflow-y:hidden;z-index:19;scrollbar-width:none}
nav.tabs::-webkit-scrollbar{display:none}
.tab{position:relative;padding:13px 18px 12px;font-family:var(--head);font-size:16px;letter-spacing:.05em;
  color:var(--grey);white-space:nowrap;transition:color .2s var(--ease);display:flex;align-items:center;gap:9px}
.tab .idx{font-family:var(--body);font-size:9px;font-weight:700;color:var(--grey2);
  border:1px solid var(--line);border-radius:2px;padding:1px 4px;letter-spacing:0;transition:.2s var(--ease)}
.tab:hover{color:var(--white)}
.tab.active{color:var(--white)}
.tab.active .idx{color:var(--red);border-color:var(--red)}
.tab .underbar{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--red);transition:width .28s var(--ease)}
.tab.active .underbar{width:100%}

/* main viewport */
main.viewport{flex:1 1 auto;position:relative;overflow:hidden;min-height:0}
.panel{position:absolute;inset:0;opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .32s var(--ease)}
.panel.active{opacity:1;visibility:visible;pointer-events:auto}

/* ============================ STAGE (3D) ============================ */
#stage-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}
.stage-grade{position:absolute;inset:0;pointer-events:none;z-index:1;
  background:radial-gradient(ellipse 70% 80% at 50% 45%,transparent 45%,rgba(10,10,10,.55) 100%)}

/* floating HUD cards over the 3D stage */
.hud{position:absolute;z-index:3;background:rgba(16,16,16,.72);backdrop-filter:blur(14px) saturate(1.3);
  border:1px solid rgba(255,255,255,.09);border-radius:3px;
  box-shadow:0 18px 50px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.05)}
.hud .hud-corners{position:absolute;inset:0;pointer-events:none}
.hud .hud-corners i{position:absolute;width:9px;height:9px;border:1px solid rgba(255,255,255,.28)}
.hud .hud-corners i.tl{top:-1px;left:-1px;border-right:0;border-bottom:0}
.hud .hud-corners i.tr{top:-1px;right:-1px;border-left:0;border-bottom:0}
.hud .hud-corners i.bl{bottom:-1px;left:-1px;border-right:0;border-top:0}
.hud .hud-corners i.br{bottom:-1px;right:-1px;border-left:0;border-top:0}

.hud-eyebrow{font-size:9px;letter-spacing:.22em;color:var(--grey);text-transform:uppercase;font-weight:600;
  display:flex;align-items:center;gap:7px}
.hud-eyebrow::before{content:"";width:12px;height:1px;background:var(--red)}

/* ===== LAYOUT LAW: the rotor owns the frame. All HUD docks to edge rails. ===== */
.rail{position:absolute;z-index:5;display:flex;flex-direction:column;gap:10px;
  max-height:calc(100% - 96px);overflow-y:auto;overflow-x:visible;scrollbar-width:none}
.rail-right{max-height:calc(100% - 80px)}
.rail::-webkit-scrollbar{display:none}
.rail-left{top:14px;left:14px;width:min(248px,40vw)}
.rail-right{top:14px;right:14px;width:min(210px,34vw);align-items:flex-end}
.rail-right .pc{width:100%}

/* collapsible panel card */
.pc{position:relative;width:100%;padding:0;overflow:hidden;background:rgba(12,12,12,.5);flex:0 0 auto}
.pc-tab{width:100%;display:flex;align-items:center;gap:9px;padding:10px 12px;text-align:left;cursor:pointer}
.pc-title{font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--grey);font-weight:600;flex:1 1 auto}
.pc-tab .chev{width:15px;height:15px;stroke-width:2;color:var(--grey);transition:transform .25s var(--ease);flex:0 0 auto}
.pc-tab:hover .pc-title,.pc-tab:hover .chev{color:#fff}
.pc.collapsed .chev{transform:rotate(-90deg)}
.pc-body{padding:0 13px 13px}
.pc.collapsed .pc-body{display:none}
.pc .tier-badge{margin-right:4px}
/* rail-context inner layout */
.pc-body .rows{margin-top:2px}
.pc .tier-chips{grid-template-columns:1fr 1fr;margin-top:2px}
.tier-size{margin-top:11px;font-family:var(--head);font-size:17px;letter-spacing:.02em;color:#fff;line-height:1}
.tier-size .u{font-family:var(--body);font-size:10px;font-weight:600;color:var(--grey);letter-spacing:.03em}
.pc .tier-dims{margin-top:6px}
.pc .env-chips{flex-direction:column}
.rail-right .pc-body{display:flex;flex-direction:column;gap:6px}
.rail-right .chip{width:100%;justify-content:space-between}

/* left telemetry stack (compact, translucent - founder hotfix) */
.telemetry{top:20px;left:20px;width:min(250px,38vw);padding:12px 14px;background:rgba(12,12,12,.48)}
.telemetry .rows{margin-top:11px;display:flex;flex-direction:column;gap:0}
.trow{display:flex;align-items:baseline;justify-content:space-between;gap:10px;
  padding:6px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.trow:last-child{border-bottom:0}
.trow .lbl{font-size:10px;letter-spacing:.05em;color:var(--grey);text-transform:uppercase;font-weight:500}
.trow .val{font-family:var(--head);font-size:24px;line-height:.85;color:var(--white)}
.trow .val .u{font-family:var(--body);font-size:10px;font-weight:600;color:var(--grey);letter-spacing:.02em;margin-left:4px}
.trow.hero .val{font-size:36px;color:var(--white)}
.trow.hero .val .u{color:var(--red)}
.state-pill{margin-top:8px;display:inline-flex;align-items:center;gap:8px;
  padding:6px 11px;border:1px solid var(--line);border-radius:2px;font-size:10px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;transition:.3s var(--ease)}
.state-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 8px var(--teal)}
.state-pill[data-s="BELOW CUT-IN"]{border-color:#444;color:var(--grey)}
.state-pill[data-s="BELOW CUT-IN"] .dot{background:#555;box-shadow:none}
.state-pill[data-s="GENERATING"]{border-color:var(--teal);color:#8fe6d6}
.state-pill[data-s="REGULATED"]{border-color:var(--gold);color:#e7cf8b}
.state-pill[data-s="REGULATED"] .dot{background:var(--gold);box-shadow:0 0 8px var(--gold)}
.state-pill[data-s="FURLED (storm)"]{border-color:var(--red);color:#f0a0a3}
.state-pill[data-s="FURLED (storm)"] .dot{background:var(--red);box-shadow:0 0 10px var(--red);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:.25}}

/* deployment-context selector (left, under telemetry) */
.env-select{bottom:84px;left:20px;width:min(320px,46vw);padding:10px 12px;z-index:4}
.env-label{font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--grey);font-weight:600;margin-bottom:8px}
.env-chips{display:flex;flex-direction:row;gap:5px}
.env-chip{flex:1;border:1px solid var(--line);border-radius:2px;padding:7px 5px;font-size:10px;font-weight:600;letter-spacing:.02em;color:var(--grey);text-align:center;transition:.16s var(--ease)}
.env-chip:hover{color:#fff;border-color:#3a3a3a}
.env-chip.on{color:#fff;border-color:var(--red);background:rgba(193,39,45,.1)}
.env-note{margin-top:8px;font-size:10px;line-height:1.45;color:var(--grey);border-top:1px solid rgba(255,255,255,.06);padding-top:8px}
@media(max-height:720px){.env-note{display:none}}
@media(max-width:720px){.env-select{display:none}}

/* wind control dock (bottom) */
.wind-dock{bottom:10px;left:50%;transform:translateX(-50%);width:min(560px,90vw);padding:8px 16px 10px;background:rgba(12,12,12,.40);backdrop-filter:blur(10px)}
.wind-dock .dock-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:8px}
.wind-dock .wind-now{font-family:var(--head);font-size:26px;line-height:.8;color:var(--white)}
.wind-dock .wind-now .u{font-family:var(--body);font-size:13px;font-weight:600;color:var(--red);letter-spacing:.02em;margin-left:5px}
.slider-wrap{position:relative;padding-top:6px}
input[type=range].wind{-webkit-appearance:none;appearance:none;width:100%;height:3px;background:linear-gradient(90deg,var(--line),#3a3a3a);border-radius:3px;outline:none}
input[type=range].wind::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;
  background:var(--red);border:3px solid #0A0A0A;box-shadow:0 0 0 1px var(--red),0 4px 14px rgba(193,39,45,.5);cursor:grab;transition:transform .15s var(--ease)}
input[type=range].wind::-webkit-slider-thumb:active{cursor:grabbing;transform:scale(1.15)}
input[type=range].wind::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--red);border:3px solid #0A0A0A;box-shadow:0 0 0 1px var(--red);cursor:grab}
.slider-ticks{display:flex;justify-content:space-between;margin-top:9px;font-size:9px;color:var(--grey2);letter-spacing:.05em}
.slider-ticks span{position:relative}
.slider-ticks span.key{color:var(--grey)}
.slider-ticks span.key::before{content:"";position:absolute;top:-13px;left:50%;width:1px;height:6px;background:#3a3a3a}
.slider-ticks span.cut::before{background:var(--teal)}
.slider-ticks span.rated::before{background:var(--gold)}
.slider-ticks span.furl::before{background:var(--red)}

/* platform scale tier selector (Scale Explorer) */
.tier-bar{top:18px;left:50%;transform:translateX(-50%);width:min(560px,54vw);padding:12px 16px 13px;z-index:5}
.tier-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:11px}
.tier-badge{font-size:8.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;padding:4px 9px;border-radius:2px;border:1px solid;white-space:nowrap;transition:.25s var(--ease)}
.tier-badge[data-badge="built"]{color:#8fe6d6;border-color:var(--teal)}
.tier-badge[data-badge="roadmap"]{color:var(--gold);border-color:rgba(200,162,60,.5)}
.tier-chips{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.tier-chip{border:1px solid var(--line);border-radius:2px;padding:8px 4px;display:flex;flex-direction:column;align-items:center;gap:2px;transition:.18s var(--ease);background:rgba(20,20,20,.4)}
.tier-chip b{font-family:var(--head);font-size:21px;line-height:.9;color:var(--white)}
.tier-chip span{font-size:8.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--grey);font-weight:600}
.tier-chip:hover{border-color:#3a3a3a;transform:translateY(-1px)}
.tier-chip.on{border-color:var(--red);background:rgba(193,39,45,.1)}
.tier-chip.on b{color:var(--red)}
.tier-chip.on span{color:var(--white)}
.tier-dims{margin-top:10px;font-size:10px;letter-spacing:.02em;color:var(--grey);text-align:center;font-variant-numeric:tabular-nums}
.tier-dims b{color:var(--gold);font-weight:600}
@media(max-width:820px){
  .tier-bar{width:min(94vw,520px);padding:9px 12px}
  .tier-chip b{font-size:17px}.tier-dims{display:none}
  .telemetry{top:118px}
}

/* swarm stepper (in tier bar) */
.tier-swarm{display:flex;align-items:center;gap:8px;margin-top:11px;padding-top:10px;border-top:1px solid rgba(255,255,255,.06);font-size:10px}
.sw-label{font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--grey);font-weight:600}
.sw-btn{width:22px;height:22px;border:1px solid var(--line);border-radius:2px;color:var(--white);font-size:15px;line-height:1;display:flex;align-items:center;justify-content:center;transition:.15s var(--ease)}
.sw-btn:hover{border-color:var(--red);color:var(--red)}
.sw-count{font-family:var(--head);font-size:20px;color:var(--white);min-width:26px;text-align:center}
.sw-units{font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--grey2)}
.sw-total{margin-left:auto;font-size:10px;color:var(--gold);font-variant-numeric:tabular-nums}

/* Live Wind Engine identity */
.engine-id{bottom:20px;left:20px;display:flex;align-items:center;gap:11px;padding:11px 14px;z-index:4}
.eng-dot{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 10px var(--teal);animation:engpulse 2s var(--ease) infinite}
@keyframes engpulse{50%{opacity:.35}}
.eng-txt b{font-family:var(--head);font-size:15px;letter-spacing:.06em;display:block;color:#fff}
.eng-txt span{font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--grey)}
.eng-more{margin-left:6px;font-size:9px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--grey);border:1px solid var(--line);border-radius:2px;padding:6px 10px;transition:.15s var(--ease)}
.eng-more:hover{color:#fff;border-color:var(--red)}
.engine-overlay{position:absolute;inset:0;z-index:30;background:rgba(6,6,6,.82);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;padding:24px}
.engine-overlay.show{display:flex}
.eng-card{position:relative;max-width:520px;background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:28px}
.eng-list{display:flex;flex-direction:column;gap:1px}
.eng-list .er{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:12px}
.eng-list .er b{color:#fff;font-weight:600}.eng-list .er code{color:var(--teal);font-family:var(--font-mono,monospace);font-size:11px}

/* Capture mode */
.capture-panel{position:absolute;bottom:70px;right:20px;z-index:40;background:rgba(10,10,10,.94);border:1px solid var(--red);border-radius:3px;padding:0;display:none;width:220px}
.capture-panel.show{display:block}
.cap-head{width:100%;font-size:9px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--red);padding:10px 12px;display:flex;align-items:center;gap:8px;cursor:pointer}
#cap-state{color:var(--grey)}
.cap-head .chev{transition:transform .25s var(--ease)}
.capture-panel.cap-collapsed .chev{transform:rotate(-90deg)}
.capture-panel.cap-collapsed .cap-grid{display:none}
.cap-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px;padding:0 12px 12px}
.cap-grid button{font-size:9.5px;letter-spacing:.03em;color:var(--grey);border:1px solid var(--line);border-radius:2px;padding:8px 6px;transition:.15s var(--ease);text-align:left}
.cap-grid button:hover,.cap-grid button.on{color:#fff;border-color:var(--red);background:rgba(193,39,45,.12)}
.capture-overlay{position:absolute;top:50%;left:40px;transform:translateY(-50%);z-index:6;display:flex;flex-direction:column;gap:16px}
.cap-count-row{display:flex;align-items:baseline;gap:14px}
.cap-count-row .ccn{font-family:var(--head);font-size:64px;line-height:.8;color:#fff}
.cap-count-row:nth-child(3) .ccn{color:var(--gold)}
.cap-count-row .ccl{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--grey)}
.capture-force{position:absolute;bottom:24px;right:24px;z-index:6;width:260px;height:260px}
.capture-force canvas{width:100%;height:100%}
.cap-force-read{position:absolute;bottom:6px;left:0;right:0;text-align:center;font-size:10px;color:var(--red);letter-spacing:.04em}
.chrome-hidden .rail,.chrome-hidden .stage-tools,.chrome-hidden .engine-id,.chrome-hidden .wind-dock,.chrome-hidden .capture-panel,.chrome-hidden .capture-overlay,.chrome-hidden .capture-force,.chrome-hidden .voice-caption{opacity:0!important;pointer-events:none!important;transition:opacity .4s var(--ease)}

/* voice-guide: toggle icon states + caption strip */
.tool .ic-off{display:none}
.tool.off .ic-on{display:none}
.tool.off .ic-off{display:block}
.tool.off{color:var(--grey2)}
.voice-caption{position:absolute;bottom:106px;left:50%;transform:translateX(-50%) translateY(8px);z-index:6;
  display:flex;align-items:center;gap:11px;max-width:min(680px,86vw);padding:9px 14px;
  background:rgba(12,12,12,.72);backdrop-filter:blur(10px);border:1px solid var(--line);border-left:2px solid var(--red);border-radius:2px;
  opacity:0;pointer-events:none;transition:.3s var(--ease)}
.voice-caption.show{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.vc-dot{width:7px;height:7px;border-radius:50%;background:var(--red);box-shadow:0 0 8px var(--red);flex:0 0 auto;animation:engpulse 1.6s var(--ease) infinite}
.vc-text{font-size:12px;line-height:1.4;color:#e6e6e6;flex:1 1 auto}
.vc-close{color:var(--grey);font-size:18px;line-height:1;flex:0 0 auto;padding:0 3px}
.vc-close:hover{color:#fff}

/* SA wind-zone map (schematic geographic bands) */
.zone-wrap{display:grid;grid-template-columns:1.4fr 1fr;gap:18px;margin-bottom:6px}
@media(max-width:760px){.zone-wrap{grid-template-columns:1fr}}
.zone-map{position:relative;aspect-ratio:1.25/1;background:#0c0c0c;border:1px solid var(--line);border-radius:3px;overflow:hidden}
.zone-block{position:absolute;border:1px solid rgba(255,255,255,.12);border-radius:3px;cursor:pointer;padding:8px 9px;transition:.18s var(--ease);display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}
.zone-block:hover{border-color:#fff;transform:scale(1.02);z-index:2}
.zone-block.sel{border-color:var(--red);box-shadow:0 0 0 1px var(--red)}
.zone-block .zn{font-family:var(--head);font-size:13px;line-height:1;color:#fff;letter-spacing:.02em;text-shadow:0 1px 3px rgba(0,0,0,.6)}
.zone-block .zw{font-family:var(--head);font-size:22px;line-height:.9;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,.7)}
.zone-block .zw small{font-family:var(--body);font-size:9px;font-weight:600;opacity:.8}
.zone-legend{display:flex;flex-direction:column;gap:8px;align-self:center}
.zone-legend .zl{display:flex;align-items:center;gap:10px;font-size:11px;color:var(--grey)}
.zone-legend .zl i{width:16px;height:10px;border-radius:2px;flex:0 0 auto}
.zone-legend .zl b{color:#fff;font-weight:600}

/* preset wind chips (container is now the right rail, see .rail/.pc) */
.chip{padding:7px 13px;border:1px solid var(--line);border-radius:2px;background:rgba(16,16,16,.7);backdrop-filter:blur(8px);
  font-size:10.5px;font-weight:600;letter-spacing:.03em;color:var(--grey);transition:.18s var(--ease);white-space:nowrap;
  display:flex;gap:8px;align-items:center}
.chip:hover{color:var(--white);border-color:#444;transform:translateX(-3px)}
.chip.on{color:var(--white);border-color:var(--red)}
.chip .ms{font-family:var(--head);font-size:14px;color:var(--red)}

/* stage toolbar (view toggles) */
.stage-tools{position:absolute;bottom:20px;right:20px;z-index:3;display:flex;gap:7px}
.tool{width:40px;height:40px;border:1px solid var(--line);border-radius:2px;background:rgba(16,16,16,.7);backdrop-filter:blur(8px);
  display:flex;align-items:center;justify-content:center;transition:.18s var(--ease);color:var(--grey)}
.tool:hover{color:var(--white);border-color:#444}
.tool.on{color:var(--white);border-color:var(--red);background:rgba(193,39,45,.12)}
.tool svg{width:18px;height:18px;stroke-width:1.5}

/* ============================ GENERIC CONTENT PANELS ============================ */
.scroller{position:absolute;inset:0;overflow-y:auto;overflow-x:hidden;padding:var(--gut) var(--gut) 60px}
.wrap{max-width:1180px;margin:0 auto}
.page-title{display:flex;align-items:flex-end;gap:16px;margin-bottom:6px}
.page-title .n{font-family:var(--head);font-size:clamp(30px,5vw,58px);color:var(--white);line-height:.8}
.page-title .n em{color:var(--red);font-style:normal}
.page-title .sub{font-size:12px;color:var(--grey);max-width:520px;line-height:1.45;margin-bottom:5px}
.rule-red{height:2px;background:var(--red);width:64px;margin:14px 0 26px}

.eyebrow{font-size:10px;letter-spacing:.24em;color:var(--red);text-transform:uppercase;font-weight:700;display:flex;align-items:center;gap:9px;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--red)}

.grid{display:grid;gap:16px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:20px;position:relative;transition:.22s var(--ease)}
.card:hover{border-color:#3a3a3a;transform:translateY(-3px);box-shadow:0 18px 40px rgba(0,0,0,.35)}
.card .ct{font-family:var(--head);font-size:22px;letter-spacing:.03em;margin-bottom:6px}
.card .cd{font-size:12.5px;color:var(--grey);line-height:1.5}
.card .cn{font-family:var(--head);font-size:42px;color:var(--white);line-height:.9}
.card .cn .u{font-family:var(--body);font-size:13px;font-weight:600;color:var(--red);margin-left:4px}
.tag{display:inline-block;font-size:9px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  padding:3px 8px;border-radius:2px;border:1px solid var(--line);color:var(--grey)}
.tag.prospective{color:var(--gold);border-color:rgba(200,162,60,.4)}
.tag.now{color:var(--teal);border-color:rgba(46,139,127,.4)}

/* maths readout blocks */
.formula{background:#0d0d0d;border:1px solid var(--line);border-left:2px solid var(--red);border-radius:2px;
  padding:16px 18px;font-family:var(--head);font-size:clamp(20px,3vw,30px);letter-spacing:.02em;color:var(--white);
  display:flex;flex-wrap:wrap;align-items:baseline;gap:5px}
.formula .op{color:var(--grey)}
.formula .term{position:relative;cursor:help;transition:.2s}
.formula .term b{font-style:normal}
.formula .term.t-rho{color:#9fb0ff}.formula .term.t-A{color:var(--teal)}
.formula .term.t-cp{color:var(--gold)}.formula .term.t-v{color:var(--red)}
.formula .term:hover{filter:brightness(1.4)}
.term-legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:14px}
.term-legend .tl{display:flex;gap:10px;align-items:flex-start;font-size:11.5px;padding:9px 11px;background:#0d0d0d;border:1px solid var(--line);border-radius:2px}
.term-legend .tl .sym{font-family:var(--head);font-size:20px;line-height:.8;flex:0 0 auto;width:26px}
.term-legend .tl .txt b{display:block;color:var(--white);font-size:11px;letter-spacing:.02em}
.term-legend .tl .txt span{color:var(--grey);font-size:10.5px}
.tl .sym.t-rho{color:#9fb0ff}.tl .sym.t-A{color:var(--teal)}.tl .sym.t-cp{color:var(--gold)}.tl .sym.t-v{color:var(--red)}.tl .sym.t-p{color:var(--white)}

/* diagram canvases */
.diagram{background:#0c0c0c;border:1px solid var(--line);border-radius:3px;position:relative;overflow:hidden}
.diagram canvas{display:block;width:100%;height:100%}
.diagram .cap{position:absolute;bottom:0;left:0;right:0;padding:10px 14px;font-size:10px;color:var(--grey);
  letter-spacing:.04em;background:linear-gradient(to top,rgba(12,12,12,.95),transparent);text-transform:uppercase}

/* ============================ SITE CHALLENGE ============================ */
.site-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;margin-bottom:26px}
.site-card{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:0;overflow:hidden;
  cursor:pointer;transition:.22s var(--ease);position:relative}
.site-card:hover{transform:translateY(-4px);border-color:#3a3a3a;box-shadow:0 20px 44px rgba(0,0,0,.4)}
.site-card.sel{border-color:var(--red);box-shadow:0 0 0 1px var(--red),0 20px 44px rgba(193,39,45,.18)}
.site-card .sc-top{padding:16px 16px 13px;border-bottom:1px solid var(--line)}
.site-card .sc-name{font-family:var(--head);font-size:20px;letter-spacing:.02em;margin-bottom:3px}
.site-card .sc-load{font-size:11px;color:var(--grey);line-height:1.4}
.site-card .sc-body{padding:14px 16px;display:flex;justify-content:space-between;align-items:flex-end}
.site-card .sc-wind{font-family:var(--head);font-size:34px;color:var(--red);line-height:.8}
.site-card .sc-wind .u{font-family:var(--body);font-size:11px;color:var(--grey);font-weight:600}
.site-card .sc-region{font-size:10px;color:var(--grey2);letter-spacing:.08em;text-transform:uppercase;text-align:right}
.site-card .sel-badge{position:absolute;top:10px;right:10px;width:20px;height:20px;border-radius:50%;border:1px solid var(--red);
  display:flex;align-items:center;justify-content:center;opacity:0;transition:.2s}
.site-card.sel .sel-badge{opacity:1}
.site-card .sel-badge svg{width:12px;height:12px;stroke:var(--red);stroke-width:2}

.scorecard{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:22px;margin-bottom:16px}
.score-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:2px;margin-top:16px}
.score-cell{padding:14px 6px;text-align:center;border-right:1px solid var(--line)}
.score-cell:last-child{border-right:0}
.score-cell .sv{font-family:var(--head);font-size:clamp(28px,4vw,42px);line-height:.85;color:var(--white)}
.score-cell .sv.hit{color:var(--teal)}.score-cell .sv.miss{color:var(--red)}
.score-cell .sv .u{font-family:var(--body);font-size:11px;color:var(--grey);font-weight:600;display:block;margin-top:4px;letter-spacing:.02em}
.score-cell .sl{font-size:9.5px;color:var(--grey2);letter-spacing:.13em;text-transform:uppercase;margin-top:9px;font-weight:600}
.verdict{margin-top:20px;padding:15px 18px;border-radius:2px;border:1px solid var(--line);display:flex;align-items:center;gap:14px}
.verdict.win{border-color:var(--teal);background:rgba(46,139,127,.08)}
.verdict.lose{border-color:var(--gold);background:rgba(200,162,60,.06)}
.verdict .vicon{width:34px;height:34px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;border-radius:50%;border:1px solid currentColor}
.verdict.win .vicon{color:var(--teal)}.verdict.lose .vicon{color:var(--gold)}
.verdict .vt{font-family:var(--head);font-size:20px;letter-spacing:.03em}
.verdict .vd{font-size:11.5px;color:var(--grey);line-height:1.4;margin-top:2px}
.leaderboard{margin-top:8px}
.lb-row{display:grid;grid-template-columns:26px 1fr auto auto;gap:12px;align-items:center;padding:10px 12px;
  border-bottom:1px solid rgba(255,255,255,.05);font-size:12px}
.lb-row .rk{font-family:var(--head);font-size:18px;color:var(--grey2)}
.lb-row.top .rk{color:var(--red)}
.lb-row .nm{color:var(--white);font-weight:600}
.lb-row .mt{color:var(--grey);font-size:10.5px}
.lb-row .pb{font-family:var(--head);font-size:18px;color:var(--teal)}

/* ============================ ECONOMICS LAB ============================ */
.bar-chart{display:flex;flex-direction:column;gap:14px;margin-top:6px}
.bar-item{display:grid;grid-template-columns:170px 1fr 74px;gap:14px;align-items:center}
.bar-item .bn{font-size:12px;color:var(--grey);text-align:right;line-height:1.25}
.bar-item .bt{position:relative;height:30px;background:#0d0d0d;border:1px solid var(--line);border-radius:2px;overflow:hidden}
.bar-item .bf{position:absolute;top:0;left:0;bottom:0;background:#3a3a3a;border-radius:0;transition:width .5s var(--ease)}
.bar-item .bf.gdr{background:linear-gradient(90deg,var(--red-dim),var(--red))}
.bar-item .bf.solar{background:linear-gradient(90deg,#1f6b60,var(--teal))}
.bar-item.gdr .bn{color:var(--white);font-weight:700}
.bar-item .bv{font-family:var(--head);font-size:22px;color:var(--white);text-align:left}
.bar-item.gdr .bv{color:var(--red)}
.lab-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;margin-top:8px}
.lab-ctl label{display:flex;justify-content:space-between;font-size:11px;letter-spacing:.05em;color:var(--grey);text-transform:uppercase;font-weight:600;margin-bottom:9px}
.lab-ctl label b{font-family:var(--head);font-size:19px;color:var(--red);letter-spacing:.02em}
input[type=range].lab{-webkit-appearance:none;appearance:none;width:100%;height:3px;background:#2a2a2a;border-radius:3px}
input[type=range].lab::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--red);border:2px solid #0A0A0A;box-shadow:0 0 0 1px var(--red);cursor:grab}
input[type=range].lab::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--red);border:2px solid #0A0A0A;cursor:grab}

/* ============================ BUILD MODE ============================ */
.build-layout{display:grid;grid-template-columns:1fr 320px;gap:18px;height:100%}
@media(max-width:820px){.build-layout{grid-template-columns:1fr}}
.build-stage{background:#0c0c0c;border:1px solid var(--line);border-radius:3px;position:relative;overflow:hidden;min-height:340px}
.build-stage canvas{display:block;width:100%;height:100%;touch-action:none}
.build-side{display:flex;flex-direction:column;gap:14px;overflow-y:auto}
.tray{background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:15px}
.tray h4{font-size:20px;margin-bottom:4px}
.tray p{font-size:11.5px;color:var(--grey);line-height:1.45;margin-bottom:12px}
.sail-bin{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
.sail-chip{aspect-ratio:1/1.4;border-radius:2px;position:relative;cursor:grab;border:1px solid var(--line);
  display:flex;align-items:flex-end;justify-content:center;padding-bottom:5px;font-size:8px;font-weight:700;letter-spacing:.05em;
  transition:.18s var(--ease);user-select:none}
.sail-chip:hover{transform:translateY(-2px)}
.sail-chip.gold{background:linear-gradient(160deg,rgba(200,162,60,.28),rgba(200,162,60,.09));border-color:rgba(200,162,60,.5);color:var(--gold)}
.sail-chip.teal{background:linear-gradient(160deg,rgba(46,139,127,.28),rgba(46,139,127,.09));border-color:rgba(46,139,127,.5);color:#8fe6d6}
.sail-chip.placed{opacity:.4;cursor:pointer}
.sail-chip.placed:hover{opacity:.7;border-color:var(--red)}
.sail-chip.placed::after{content:"✓";position:absolute;top:3px;right:5px;color:var(--white);font-size:11px}
.build-progress{height:5px;background:#0d0d0d;border:1px solid var(--line);border-radius:3px;overflow:hidden;margin-top:12px}
.build-progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal),var(--gold));transition:width .4s var(--ease)}
.spec-earned{padding:16px;border:1px solid var(--teal);border-radius:3px;background:rgba(46,139,127,.07);opacity:0;transform:translateY(8px);
  transition:.4s var(--ease);pointer-events:none}
.spec-earned.show{opacity:1;transform:none;pointer-events:auto}
.spec-earned h4{color:var(--teal);font-size:22px}
.spec-earned ul{list-style:none;margin-top:10px;font-size:11.5px;color:var(--grey)}
.spec-earned li{display:flex;justify-content:space-between;padding:5px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.spec-earned li b{color:var(--white);font-weight:600}
.btn{display:inline-flex;align-items:center;gap:9px;padding:11px 18px;border:1px solid var(--red);border-radius:2px;
  background:var(--red);color:#fff;font-size:11px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;transition:.18s var(--ease)}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(193,39,45,.35)}
.btn.ghost{background:none;color:var(--white);border-color:var(--line)}
.btn.ghost:hover{border-color:#555;box-shadow:none}
.btn svg{width:15px;height:15px;stroke-width:1.6}

/* ============================ COUNT-THEM TOPOLOGY ============================ */
.count-bar{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.count-pill{flex:1 1 120px;background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:14px 16px;cursor:pointer;
  transition:.2s var(--ease)}
.count-pill:hover{border-color:#3a3a3a;transform:translateY(-2px)}
.count-pill.on{border-color:var(--red)}
.count-pill .cnum{font-family:var(--head);font-size:40px;line-height:.8}
.count-pill.struts .cnum{color:var(--white)}.count-pill.hubs .cnum{color:var(--white)}
.count-pill.panels .cnum{color:var(--gold)}
.count-pill .cname{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--grey);margin-top:8px;font-weight:600}
.count-pill.on .cname{color:var(--white)}

/* ============================ LOADING ============================ */
#loader{position:fixed;inset:0;z-index:200;background:var(--black);display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:26px;transition:opacity .6s var(--ease)}
#loader.done{opacity:0;pointer-events:none}
.load-cross{width:74px;height:74px;position:relative}
.load-cross::before,.load-cross::after{content:"";position:absolute;background:var(--line)}
.load-cross::before{left:50%;top:0;bottom:0;width:1px;transform:translateX(-.5px)}
.load-cross::after{top:50%;left:0;right:0;height:1px;transform:translateY(-.5px)}
.load-cross i{position:absolute;inset:0;border:1px solid var(--line);animation:crospin 3s linear infinite}
.load-cross i::after{content:"";position:absolute;top:-3px;left:-3px;width:6px;height:6px;background:var(--red);border-radius:50%}
@keyframes crospin{to{transform:rotate(360deg)}}
.load-cross u{position:absolute;top:50%;left:50%;width:20px;height:20px;border:1px solid var(--red);border-radius:50%;
  transform:translate(-50%,-50%) scale(.4);animation:pulse 1.6s var(--ease) infinite;opacity:.6}
@keyframes pulse{to{transform:translate(-50%,-50%) scale(1.6);opacity:0}}
#loader .lt{font-family:var(--head);font-size:22px;letter-spacing:.18em;color:var(--white)}
#loader .ld{font-size:10px;letter-spacing:.28em;color:var(--grey);text-transform:uppercase;margin-top:-16px}
#loader .lp{font-size:10px;color:var(--grey2);letter-spacing:.1em}

.disclaimer{margin-top:30px;padding:16px 18px;border:1px dashed var(--line);border-radius:3px;font-size:11px;color:var(--grey);line-height:1.6}
.disclaimer b{color:var(--gold);font-weight:600}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:760px){.two-col{grid-template-columns:1fr}}
.prose{font-size:13px;color:#c4c4c4;line-height:1.65}
.prose p{margin-bottom:12px}.prose strong{color:var(--white);font-weight:600}
.figimg{border:1px solid var(--line);border-radius:3px;background:#0c0c0c}

/* ---- responsive ---- */
@media(max-width:720px){
  body{font-size:14px}
  .brandmark .prog{font-size:13px}
  .doccode{display:none}
  .telemetry{width:min(220px,54vw);padding:12px 13px;top:12px;left:12px}
  .trow.hero .val{font-size:34px}.trow .val{font-size:22px}
  .chip{padding:6px 9px;font-size:9.5px}
  .wind-dock{bottom:12px;width:94vw;padding:12px 15px}
  .stage-tools{bottom:74px;right:12px}
  .build-layout{grid-template-columns:1fr}
}
@media(max-width:720px) and (max-height:640px){
  .telemetry .rows .trow:not(.hero){display:none}
}

/* ===== SHORT-VIEWPORT LAW: the subject of every tab stays fully visible ===== */
@media(max-height:750px){
  .scroller{padding-top:12px;padding-bottom:32px}
  .eyebrow{margin-bottom:6px}
  .page-title{margin-bottom:2px}
  .page-title .n{font-size:clamp(22px,3vw,34px)}
  .page-title .sub{font-size:11px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:3px}
  .rule-red{margin:9px 0 14px}
  /* charts/diagrams cap to a share of the viewport so they never push content off */
  .diagram{max-height:46vh}
  #dg-hybrid{height:40vh!important;min-height:220px}
  /* BUILD MODE: the 3D subject must fully fit, no scroll needed */
  #panel-build .scroller{overflow:hidden;display:flex}
  #panel-build .wrap{min-height:0}
  #panel-build .build-layout{flex:1 1 auto;min-height:0}
  #panel-build .build-stage{min-height:0}
}
@media(max-height:620px){
  .page-title .sub{display:none}
  .page-title .n{font-size:26px}
  .rule-red{margin:6px 0 10px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .load-cross i{animation:none}
}

/* ============================================================================
   DESIGN PASS 2026-07-08 — loader choreography + micro-interaction polish
   ============================================================================ */
/* Loader: the drafting instruments draw themselves in, then the type settles */
.load-cross::before{transform-origin:top;animation:drawV .9s var(--ease) .1s both}
.load-cross::after{transform-origin:left;animation:drawH .9s var(--ease) .35s both}
@keyframes drawV{from{transform:translateX(-.5px) scaleY(0)}to{transform:translateX(-.5px) scaleY(1)}}
@keyframes drawH{from{transform:translateY(-.5px) scaleX(0)}to{transform:translateY(-.5px) scaleX(1)}}
.load-cross i{animation:crosfade 1s var(--ease) .55s both, crospin 3s linear 1.4s infinite}
@keyframes crosfade{from{opacity:0;transform:rotate(-14deg) scale(.86)}to{opacity:1;transform:rotate(0) scale(1)}}
#loader .lt{animation:ltIn 1.1s var(--ease) .5s both}
@keyframes ltIn{from{opacity:0;letter-spacing:.44em}to{opacity:1;letter-spacing:.18em}}
#loader .ld,#loader .lp{animation:fadeUp .8s var(--ease) .95s both}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
#loader{transition:opacity .8s var(--ease), visibility .8s}
#loader.done{opacity:0}

/* Chips + preset buttons: confident hover, no layout shift */
.chip{transition:border-color .18s var(--ease), color .18s var(--ease), background .18s var(--ease), transform .18s var(--ease)}
.chip:hover{border-color:var(--red);transform:translateY(-1px)}
.chip:active{transform:translateY(0)}

/* Tab hover: underbar sweep even before active */
.tab{position:relative;transition:color .2s var(--ease)}
.tab:not(.active):hover{color:var(--white)}
.tab .underbar{transition:width .28s var(--ease)}

/* Collapsible rails: soft chevron rotation + panel settle */
.hud{transition:opacity .25s var(--ease), transform .25s var(--ease)}

/* Focus visibility (keyboard) */
button:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:1px solid var(--red);outline-offset:2px}

/* Number readouts settle with a subtle weight — instrument feel */
.trow .val,.wind-dock .wind-now{font-variant-numeric:tabular-nums}