/* DARKSKY Site Twin — acrylic placards over the landscape.
   Light frosted glass, continuous corners, SF system type, one aviation-blue accent. */
:root{
  color-scheme:dark;
  /* Liquid glass: the ground stays visible through every placard (refs in .impeccable/inspiration). */
  --ink:#fff;--ink-2:rgba(255,255,255,.94);--ink-3:#fff;--dark:#121519;
  --accent:#2f8cff;--accent-ink:var(--dark);--accent-soft:rgba(100,181,255,.22);
  --tint:rgba(18,22,28,.26);--tint-strong:rgba(16,20,26,.34);
  --rim:linear-gradient(180deg,rgba(255,255,255,.62),rgba(255,255,255,.16) 26%,rgba(255,255,255,.07) 70%,rgba(255,255,255,.16));
  --glass:linear-gradient(var(--tint),var(--tint)) padding-box,var(--rim) border-box;
  --glass-strong:linear-gradient(var(--tint-strong),var(--tint-strong)) padding-box,var(--rim) border-box;
  --glass-thin:rgba(18,22,28,.22);
  --edge:rgba(255,255,255,.45);--stroke:rgba(255,255,255,.16);--stroke-2:rgba(255,255,255,.24);
  --fill:rgba(255,255,255,.14);--fill-2:rgba(255,255,255,.24);
  --shadow:0 18px 40px -16px rgba(0,0,0,.45),0 2px 10px -2px rgba(0,0,0,.18);
  --shadow-lift:0 28px 60px -18px rgba(0,0,0,.55),0 4px 14px -4px rgba(0,0,0,.22);
  /* brightness<1 darkens what sits behind the glass so white type holds over bright desert */
  --blur:blur(14px) saturate(150%) brightness(.88);
  --blur-strong:blur(18px) saturate(145%) brightness(.8);
  --r-sheet:30px;--r-panel:28px;--r-control:14px;--r-pill:999px;
  --gap:max(20px,env(safe-area-inset-left));
  --ease:cubic-bezier(.16,1,.3,1);--spring:cubic-bezier(.22,1,.36,1);
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Inter",system-ui,sans-serif;
  --paper:var(--ink);--muted:var(--ink-2);--faint:var(--ink-3);--line:var(--stroke-2);--soft:var(--stroke);--mono:var(--sans);
  font-family:var(--sans);font-feature-settings:"tnum" 1;
}
*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;overflow:hidden}
body{background:#1b2028;color:var(--ink);text-shadow:0 1px 2px rgba(0,0,0,.32);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-size:13px;letter-spacing:-.003em}
button,a,input,select{font:inherit;color:inherit}
button{cursor:pointer;-webkit-user-select:none;user-select:none}
button:disabled{opacity:.4;cursor:default}
:focus{outline:none}
:focus-visible{outline:2px solid #fff;outline-offset:3px}
::selection{background:rgba(100,181,255,.45);color:#fff}
.mono{font-family:var(--sans)}
.small{font-size:12px;color:var(--ink-2)}
[hidden]{display:none!important}
*{scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.35) transparent}
*::-webkit-scrollbar{width:8px;height:8px}*::-webkit-scrollbar-thumb{background:rgba(255,255,255,.3);border-radius:8px;border:2px solid transparent;background-clip:padding-box}

/* Acrylic material: one recipe */
.modes,.scene-panel,.mode-panel,.tour-caption,.intro,.chapters button,.icon-button,.aircraft-card,.notes,.panel-toggle,.readout,.attribution,.rotate-hint,.stick,.touch-actions button,.label b,.brand,.header-actions .text-button,.ground-controls{
  background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);
  border:1px solid transparent;box-shadow:var(--shadow)}

#terrain-canvas{position:fixed;inset:0;width:100%;height:100%;touch-action:none;outline:none}
.vignette{position:fixed;inset:0;pointer-events:none;z-index:1;background:linear-gradient(to bottom,rgba(10,16,24,.18),transparent 18%,transparent 78%,rgba(10,16,24,.16));transition:opacity .8s var(--ease)}
.mode-walk .vignette{opacity:.4}

/* App bar: brand, segmented mode switch and About as floating glass capsules */
.appbar{position:fixed;top:12px;left:var(--gap);right:var(--gap);height:48px;z-index:5;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;pointer-events:none}
.appbar>*{pointer-events:auto}
.brand{justify-self:start;display:flex;gap:9px;align-items:center;height:40px;padding:0 15px 0 12px;border-radius:var(--r-pill);text-decoration:none;font-size:13px;font-weight:650;letter-spacing:.06em}
.brand svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6}
.project-name{display:none}
.modes{display:flex;gap:2px;padding:3px;border-radius:var(--r-pill)}
.mode-tab{min-height:34px;min-width:88px;border:0;background:none;padding:0 18px;border-radius:var(--r-pill);font-size:13px;font-weight:550;color:var(--ink-2);transition:color .3s var(--ease),background .35s var(--ease),box-shadow .35s var(--ease),transform .2s var(--ease)}
.mode-tab:hover:not(:disabled):not([aria-pressed=true]){color:var(--ink)}
.mode-tab:active:not(:disabled){transform:scale(.96)}
.mode-tab[aria-pressed=true]{color:var(--dark);text-shadow:none;background:#fff;box-shadow:0 3px 8px -2px rgba(16,24,40,.18),0 0 0 .5px rgba(16,24,40,.06)}
.header-actions{justify-self:end;display:flex;gap:8px}
.text-button{border:0;background:none;padding:8px 2px;font-size:13px;font-weight:600;color:#fff;text-decoration:underline;text-decoration-color:rgba(255,255,255,.4);text-underline-offset:3px;transition:opacity .2s}
.text-button:hover{opacity:.75}
.header-actions .text-button{height:40px;padding:0 16px;border-radius:var(--r-pill);color:var(--ink);text-decoration:none}

/* Buttons */
.primary{display:inline-flex;justify-content:space-between;align-items:center;gap:22px;min-height:46px;padding:0 20px 0 22px;border:0;border-radius:var(--r-pill);background:#fff;color:var(--dark);text-shadow:none;font-size:15px;font-weight:600;letter-spacing:-.01em;box-shadow:0 12px 28px -10px rgba(0,0,0,.45);transition:transform .25s var(--spring),box-shadow .3s var(--ease),background .2s}
.primary:hover:not(:disabled){background:rgba(255,255,255,.92);box-shadow:0 16px 32px -10px rgba(0,0,0,.5)}
.primary:active:not(:disabled){transform:scale(.97)}
.primary svg{width:17px;fill:none;stroke:currentColor;stroke-width:1.8}
.secondary{min-height:46px;padding:0 22px;border:1px solid transparent;border-radius:var(--r-pill);background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);font-size:15px;font-weight:600;box-shadow:var(--shadow);transition:transform .25s var(--spring),background .2s}
.secondary:hover:not(:disabled){background:var(--glass-strong)}
.secondary:active:not(:disabled){transform:scale(.97)}
.pick-action{display:block;width:100%;min-height:42px;border:0;border-radius:var(--r-control);background:var(--fill);padding:10px 14px;font-size:14px;font-weight:550;text-align:center;text-decoration:none;color:var(--ink);transition:background .2s,transform .2s var(--spring)}
.pick-action:hover{background:var(--fill-2)}
.pick-action:active{transform:scale(.98)}
.pick-action[aria-pressed=true]{background:#fff;color:var(--dark);text-shadow:none}

/* Intro plate */
.intro,.tour-caption,.aircraft-card,.notes,.scene-panel{-webkit-backdrop-filter:var(--blur-strong)!important;backdrop-filter:var(--blur-strong)!important}
.intro{position:fixed;left:var(--gap);bottom:var(--gap);z-index:4;width:min(560px,calc(100vw - 2*var(--gap)));padding:28px 28px 24px;border-radius:var(--r-sheet);background:var(--glass-strong);transition:opacity .7s var(--ease),transform .8s var(--ease),filter .7s var(--ease)}
body:not(.is-intro) .intro{opacity:0;transform:translateY(18px) scale(.98);filter:blur(6px);pointer-events:none}
.eyebrow{display:none}
.intro h1{margin:0;font-size:clamp(38px,4.6vw,62px);line-height:1;font-weight:300;letter-spacing:-.035em}
.intro h1 span{display:block;margin-top:8px;font-size:clamp(17px,1.6vw,21px);font-weight:500;letter-spacing:-.012em;color:var(--ink-2)}
.intro-lede{max-width:46ch;margin:14px 0 22px;font-size:15px;line-height:1.5;color:var(--ink-2)}
.intro-actions{display:flex;flex-wrap:wrap;gap:10px}
.intro-status{margin:14px 0 0;font-size:12px;color:var(--ink-3)}

/* Guided tour */
.tour{position:fixed;inset:auto 0 0 0;z-index:4;pointer-events:none;transition:opacity .5s var(--ease)}
body:not(.mode-tour) .tour,.is-intro .tour{opacity:0;visibility:hidden}
.tour-caption{position:fixed;left:var(--gap);bottom:86px;width:min(500px,calc(100vw - 2*var(--gap)));padding:20px 22px 18px;border-radius:var(--r-panel);pointer-events:auto;background:var(--glass-strong)}
.tour-index{display:none}
.tour-caption h2{margin:0 0 8px;font-size:clamp(28px,2.8vw,38px);line-height:1.04;font-weight:300;letter-spacing:-.03em}
.tour-caption p#tour-text{margin:0 0 14px;font-size:14px;line-height:1.5;color:var(--ink-2)}
#tour-facts{display:grid;grid-template-columns:repeat(3,auto);justify-content:start;gap:0 20px;margin:0;padding-top:12px;border-top:1px solid var(--stroke)}
#tour-facts dt{font-size:11px;font-weight:500;color:var(--ink-3);margin-bottom:2px}
#tour-facts dd{margin:0;font-size:clamp(22px,1.8vw,26px);line-height:1.05;font-weight:300;letter-spacing:-.035em;white-space:nowrap}
.tour-caption.swap{animation:caption .6s var(--ease)}
@keyframes caption{from{opacity:0;transform:translateY(10px);filter:blur(4px)}to{opacity:1;transform:none;filter:none}}
.tour-rail{position:fixed;left:var(--gap);bottom:var(--gap);max-width:calc(100vw - 2*var(--gap));display:flex;align-items:center;gap:4px;padding:4px;border-radius:var(--r-pill);pointer-events:auto;background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid transparent;box-shadow:var(--shadow)}
.tour-rail .icon-button,.tour-rail .chapters button{background:none;border:0;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
@media(hover:hover){.tour-rail .icon-button:hover,.tour-rail .chapters button:hover:not([aria-current]){background:rgba(255,255,255,.12)}}
.tour-buttons{display:flex;gap:6px}
.icon-button{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;transition:transform .25s var(--spring),background .2s}
.icon-button:hover{background:var(--glass-strong)}
.icon-button:active{transform:scale(.92)}
.icon-button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.9}
#tour-play .play{display:none}#tour-play[aria-pressed=false] .play{display:block;fill:currentColor;stroke:none}#tour-play[aria-pressed=false] .pause{display:none}
.chapters{flex:1;display:flex;gap:6px;margin:0;padding:2px;list-style:none;overflow-x:auto;scrollbar-width:none}
.chapters::-webkit-scrollbar{display:none}
.chapters li{flex:0 0 auto}
.chapters button{position:relative;height:40px;display:flex;align-items:center;gap:8px;padding:0 14px;border-radius:var(--r-pill);font-size:13px;font-weight:550;color:var(--ink-2);overflow:hidden;white-space:nowrap;transition:color .2s,background .3s var(--ease),transform .25s var(--spring)}
.chapters button .n{font-size:11px;color:var(--ink-3);font-weight:600}
@media(hover:hover){.chapters button:hover:not([aria-current]){color:var(--ink)}}
.chapters button:active{transform:scale(.97)}
.chapters button[aria-current=step]{color:var(--dark);text-shadow:none;background:#fff}
.chapters button[aria-current=step] .n{color:var(--dark)}
.chapters button i{position:absolute;left:14px;bottom:6px;height:2px;width:0;max-width:calc(100% - 28px);border-radius:2px;background:var(--accent)}

/* Scene placard */
.scene-panel{position:fixed;top:72px;right:var(--gap);width:292px;max-height:calc(100dvh - 92px);overflow-y:auto;z-index:4;padding:4px;border-radius:var(--r-panel);transition:opacity .45s var(--ease),transform .55s var(--ease),filter .45s var(--ease),visibility .45s}
.mode-tour .scene-panel,.is-intro .scene-panel{opacity:0;transform:translateX(16px) scale(.98);filter:blur(4px);pointer-events:none}
.panel-block{padding:14px 14px 12px}
.panel-block+.panel-block{border-top:1px solid var(--stroke)}
.block-title{margin:0 0 8px!important;font-size:12px!important;font-weight:650;color:var(--ink)!important;letter-spacing:-.005em}
.row{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:14px;min-height:34px}
.row output{font-size:13px;font-weight:600;color:var(--ink-2)}
#time-value{font-size:30px;line-height:1;font-weight:300;letter-spacing:-.03em;color:var(--ink)}
.ends{display:flex;justify-content:space-between;font-size:11px;font-weight:500;color:var(--ink-3)}
.chip-row{display:flex;gap:3px;margin-top:10px;padding:4px;border-radius:var(--r-control);background:var(--fill)}
.chip{flex:1;min-height:32px;border:0;border-radius:10px;background:none;font-size:13px;font-weight:550;color:var(--ink);transition:background .3s var(--ease),box-shadow .3s var(--ease),transform .2s var(--spring)}
.chip:hover:not(:disabled):not([aria-pressed=true]){background:rgba(255,255,255,.18)}
.chip:active:not(:disabled){transform:scale(.96)}
.chip[aria-pressed=true]{background:#fff;color:var(--dark);text-shadow:none;box-shadow:0 3px 8px -2px rgba(16,24,40,.18),0 0 0 .5px rgba(16,24,40,.06)}
#activity-status,#concept-status{margin:6px 0 0;font-size:12px;color:var(--ink-2)}
#activity-toggle{min-height:32px;padding:0 4px}
#compare-button{display:inline-block;padding:8px 0 0}
.layer-note{margin:10px 0 0;font-size:11px!important;font-weight:500;line-height:1.45;color:var(--ink-3)!important}
.slope-legend{display:flex;align-items:center;gap:6px;margin:0 0 6px;font-size:11px;color:var(--ink-2)}
.slope-legend i{display:inline-block;width:16px;height:6px;border-radius:3px;background:var(--c);margin-left:4px}
.slope-legend i:first-child{margin-left:0}
#inspection-back{margin:6px 0 0}

/* Range */
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:28px;margin:6px 0 2px;background:none;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:5px;border-radius:5px;background:linear-gradient(#fff,#fff) 0/var(--fill-pct,50%) 100% no-repeat,rgba(255,255,255,.22)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;margin-top:-9.5px;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(16,24,40,.28),0 0 0 .5px rgba(16,24,40,.08);transition:transform .2s var(--spring)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.12)}
input[type=range]::-moz-range-track{height:5px;border-radius:5px;background:var(--fill-2)}
input[type=range]::-moz-range-progress{height:5px;border-radius:5px;background:#fff}
input[type=range]::-moz-range-thumb{width:24px;height:24px;border:0;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(16,24,40,.28)}

/* iOS switch */
.switch{position:relative;flex-shrink:0;width:46px;height:28px;border:0;border-radius:var(--r-pill);background:rgba(255,255,255,.18);box-shadow:inset 0 0 0 1px rgba(255,255,255,.18);padding:0;transition:background .3s var(--ease)}
.switch span{position:absolute;top:2px;left:2px;width:24px;height:24px;border-radius:12px;background:#fff;box-shadow:0 3px 8px rgba(0,0,0,.28);transition:transform .35s var(--spring),background .25s}
.switch[aria-checked=true]{background:var(--accent);box-shadow:none}
.switch[aria-checked=true] span{transform:translateX(18px)}

/* Walk entry */
.mode-panel{position:fixed;left:var(--gap);bottom:var(--gap);width:300px;padding:16px;z-index:4;border-radius:var(--r-panel);display:flex;flex-direction:column;gap:10px;transition:opacity .45s var(--ease),transform .55s var(--ease),filter .45s var(--ease)}
.mode-tour .mode-panel,.is-intro .mode-panel,.mode-walk .mode-panel{opacity:0;transform:translateY(14px) scale(.98);filter:blur(4px);pointer-events:none;visibility:hidden}
.mode-panel .primary{width:100%}
.mode-panel p{margin:0;font-size:12px;line-height:1.45;color:var(--ink-2)}
#campus-status{font-size:12px;font-weight:600;color:var(--ink)}
#mode-status{font-size:12px;font-weight:500;color:var(--ink-3)}
.vr-help{line-height:1.5!important}

/* Walk controls */
.ground-controls{position:fixed;left:var(--gap);bottom:var(--gap);width:340px;z-index:4;padding:6px;border-radius:var(--r-panel);animation:rise .5s var(--ease)}
@keyframes rise{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.ground-controls__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:6px 6px 6px 14px;border-radius:16px;font-size:13px;color:var(--ink-2)}
.ground-controls__head button{min-height:32px;border:0;border-radius:var(--r-pill);background:var(--fill);padding:0 14px;font-size:13px;font-weight:600;transition:background .2s,transform .2s var(--spring)}
.ground-controls__head button:hover{background:var(--fill-2)}
.ground-controls__head button:active{transform:scale(.96)}
.height-control{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 14px 0;font-size:14px}
.height-control select{min-height:36px;min-width:96px;padding:0 30px 0 12px;-webkit-appearance:none;appearance:none;border:0;border-radius:10px;background:var(--fill) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23ffffff' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 12px center;font-size:14px;font-weight:550;cursor:pointer}
.height-help{margin:4px 14px 0;font-size:12px;font-weight:500;color:var(--ink-3)}
.speed-control{padding:10px 14px 0;font-size:14px}
.ground-controls__body{display:flex;gap:16px;align-items:center;padding:12px 14px}
.ground-controls__body p{font-size:12px;line-height:1.6;color:var(--ink-2);margin:0}
.move-pad{display:grid;grid-template-columns:repeat(3,38px);grid-template-rows:repeat(2,38px);gap:5px;flex-shrink:0}
.move-pad button{border:0;border-radius:10px;background:var(--fill);display:grid;place-items:center;touch-action:none;transition:background .15s,transform .15s var(--spring)}
.move-pad button:hover{background:var(--fill-2)}
.move-pad button:active{background:#fff;color:var(--dark);transform:scale(.94)}
.move-pad button:first-child{grid-column:2}.move-pad button:nth-child(2){grid-row:2;grid-column:1}.move-pad button:nth-child(3){grid-row:2;grid-column:2}.move-pad button:nth-child(4){grid-row:2;grid-column:3}
.move-pad svg{width:18px;fill:none;stroke:currentColor;stroke-width:2}
.touch-actions{display:none;gap:8px;margin-top:10px}
.touch-actions button{min-height:44px;padding:0 18px;border-radius:var(--r-pill);touch-action:none;font-size:14px;font-weight:600;transition:transform .2s var(--spring),background .15s}
.touch-actions button:active{transform:scale(.95);background:#fff;color:var(--dark);text-shadow:none}
.stick{display:none;position:relative;width:112px;height:112px;flex-shrink:0;border-radius:50%;touch-action:none}
.stick span{position:absolute;left:50%;top:50%;width:48px;height:48px;margin:-24px 0 0 -24px;border-radius:50%;background:#fff;box-shadow:0 6px 14px -4px rgba(16,24,40,.35),0 0 0 .5px rgba(16,24,40,.08);transition:transform .35s var(--spring)}
.stick.active span{transition:none}
.stick.active{box-shadow:inset 0 1px 1px rgba(255,255,255,.4),0 0 0 4px rgba(255,255,255,.18),var(--shadow)}

/* Acrylic tags on pins (one message per tag; the followed one turns blue) */
.labels{position:fixed;inset:0;pointer-events:none;z-index:2;overflow:hidden}
.label{position:absolute;left:0;top:0;display:flex;flex-direction:column;align-items:center;opacity:0;transition:opacity .35s var(--ease);will-change:transform}
.label.on{opacity:1}
.label b{display:block;padding:7px 12px 6px;border-radius:14px;font-weight:600;font-size:12px;letter-spacing:-.005em;white-space:nowrap;text-align:left;background:var(--glass-strong);transform:scale(.92);transition:transform .45s var(--spring),background .3s,color .3s}
.label.on b{transform:none}
.label small{display:block;margin-top:1px;font-size:11px;font-weight:500;color:var(--ink-2);text-transform:none;letter-spacing:0}
.label::after{content:"";width:1px;height:22px;background:linear-gradient(rgba(255,255,255,.9),rgba(255,255,255,.35))}
.label::before{content:"";order:3;width:14px;height:14px;margin-top:-1px;border-radius:50%;background:radial-gradient(circle,#fff 0 3px,rgba(255,255,255,.18) 3.5px);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.7),0 2px 6px rgba(0,0,0,.35)}
.label.hot b{background:#fff;color:var(--dark);text-shadow:none;border-color:transparent}
.label.hot small{color:#55555b}
.label.gis.parcel b::before{content:"";display:inline-block;width:8px;height:8px;margin-right:7px;border-radius:50%;vertical-align:1px;background:#f08a24;box-shadow:0 0 0 2px rgba(255,255,255,.35)}
.label.gis.parcel.site2 b::before{background:#2aa7e0}
.labels-off .labels{display:none}
.mode-walk .labels,.is-ground .labels{display:none}
.site2-active .labels .label:not(.gis){display:none}

/* Readout + attribution */
.readout{position:fixed;right:var(--gap);bottom:calc(var(--gap) + 30px);display:flex;gap:14px;padding:6px 12px;border-radius:var(--r-pill);font-size:11px;font-weight:500;color:#fff;z-index:3;font-variant-numeric:tabular-nums}
.mode-tour .readout,.is-intro .readout{display:none}
.attribution{position:fixed;right:var(--gap);bottom:var(--gap);padding:4px 10px;border-radius:var(--r-pill);font-size:10px;color:var(--ink-2);z-index:3;background:var(--glass-thin)}
.mode-tour .attribution{bottom:calc(var(--gap) + 58px)}
#pause-note{position:fixed;top:44%;left:50%;transform:translate(-50%,-50%);padding:14px 22px;border-radius:var(--r-pill);font-size:15px;font-weight:600;z-index:6;background:var(--glass-strong);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);box-shadow:var(--shadow-lift)}

/* Sheets */
dialog[open]{animation:sheet .45s var(--ease)}
@keyframes sheet{from{opacity:0;transform:translateY(16px) scale(.97)}to{opacity:1;transform:none}}
.notes{width:min(560px,calc(100vw - 32px));max-height:min(82vh,780px);padding:26px 30px;border-radius:var(--r-sheet);background:var(--glass-strong);color:var(--ink);box-shadow:var(--shadow-lift)}
.notes::backdrop{background:rgba(8,12,18,.35);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.notes h2{margin:6px 0 16px;font-size:32px;line-height:1.06;font-weight:300;letter-spacing:-.03em}
.notes h3{margin:22px 0 4px;font-size:13px;font-weight:650;color:var(--ink)}
.notes h3+p{margin-top:4px}
.notes p{font-size:14px;line-height:1.6;color:var(--ink-2)}
.notes a,.aircraft-card a{color:#fff;text-decoration:underline;text-decoration-color:rgba(255,255,255,.45);text-underline-offset:3px}
.notes a:hover,.aircraft-card a:hover{text-decoration:underline;text-underline-offset:3px}
.dialog-close{display:block;margin-left:auto;min-height:32px;padding:0 14px;border:0;border-radius:var(--r-pill);background:var(--fill);font-size:13px;font-weight:600;transition:background .2s}
.dialog-close:hover{background:var(--fill-2)}
.compare{width:min(760px,calc(100vw - 32px))}
.compare table{width:100%;border-collapse:collapse;font-size:13px;margin:6px 0 14px}
.compare th,.compare td{padding:8px 10px;border-bottom:1px solid var(--stroke);text-align:left;font-weight:500}
.compare thead th{font-size:12px;font-weight:650;color:var(--ink)}
.compare tbody th{color:var(--ink-2)}
.compare tr.group th{padding-top:18px;font-size:12px;font-weight:650;color:#fff;border-bottom:0}
.compare td{font-variant-numeric:tabular-nums}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;vertical-align:-1px;margin-right:4px}
.dot.g{background:#34c759}.dot.y{background:#ffcc00}.dot.r{background:#ff3b30}.dot.n{background:var(--fill-2)}

/* Aircraft / parcel card */
.aircraft-card{position:fixed;top:72px;left:var(--gap);width:min(360px,calc(100vw - 2*var(--gap)));z-index:6;padding:22px 22px 18px;border-radius:var(--r-panel);background:var(--glass-strong);box-shadow:var(--shadow-lift);animation:sheet .45s var(--ease)}
.aircraft-card>p.small:first-of-type{margin:0;font-size:12px;font-weight:600;color:var(--ink-2)}
.aircraft-card h2{margin:4px 0 2px;font-size:30px;line-height:1.05;font-weight:300;letter-spacing:-.03em}
.aircraft-card .aircraft-kind{margin:0 0 10px;font-size:13px;line-height:1.45;color:var(--ink-2)}
.aircraft-card .aircraft-status{display:inline-block;margin:0 0 12px;padding:4px 11px;border-radius:var(--r-pill);background:rgba(255,255,255,.16);box-shadow:inset 0 0 0 1px rgba(255,255,255,.22);font-size:12px;font-weight:600;color:#fff}
.aircraft-card dl{margin:0;border-top:1px solid var(--stroke)}
.aircraft-card dl div{display:flex;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px solid var(--stroke)}
.aircraft-card dt{font-size:13px;color:var(--ink-2)}
.aircraft-card dd{margin:0;font-size:13px;font-weight:600;text-align:right}
.aircraft-card .aircraft-note{margin:12px 0 6px;font-size:11px;line-height:1.5;color:var(--ink-3)}
.aircraft-card .aircraft-sources{margin:0;font-size:12px}
.aircraft-card .dialog-close{position:absolute;top:14px;right:14px}
#terrain-canvas.is-aircraft-hover{cursor:pointer}

/* Loading */
.loading{position:fixed;inset:0;z-index:9;display:grid;place-content:center;justify-items:center;gap:18px;background:radial-gradient(120% 90% at 50% 40%,#2a313b,#0f1216);text-align:center;transition:opacity .9s var(--ease),visibility .9s}
.loading.done{opacity:0;visibility:hidden;pointer-events:none}
.loading .eyebrow{display:block;margin:0;font-size:15px;font-weight:700;letter-spacing:.14em;color:var(--ink)}
.loading-bar{width:200px;height:4px;border-radius:4px;background:var(--fill-2);overflow:hidden}
.loading-bar span{display:block;height:100%;width:8%;border-radius:4px;background:#fff;transition:width .4s linear}
.loading p{margin:0;font-size:13px;color:var(--ink-2)}
.loading button{border:0;border-radius:var(--r-pill);background:#fff;color:var(--dark);padding:12px 20px;font-weight:600}

.registration-only #app>:not(canvas){display:none!important}
.panel-toggle,.rotate-hint{display:none}

@media(pointer:coarse){.touch-actions{display:flex}.keyboard-help{display:none}.stick{display:block}.move-pad{display:none}}

/* Tablets and phones */
@media(max-width:900px){
  :root{--gap:max(14px,env(safe-area-inset-left))}
  .appbar{top:10px;height:44px}
  .brand{display:none}
  .mode-tab{min-width:0;padding:0 14px;min-height:32px}
  .header-actions .text-button{height:38px;padding:0 14px}
  .intro{padding:22px 20px 18px}
  .tour-caption{bottom:76px}
  .tour-buttons .icon-button:not(#tour-play){display:none}
  .chapters li{min-width:44px;flex:0 0 auto}
  .chapters button{width:44px;justify-content:center;padding:0}
  .chapters button .t{display:none}
  .chapters button i{left:12px}
  .panel-toggle{position:fixed;top:64px;right:var(--gap);z-index:5;display:flex;align-items:center;gap:8px;min-height:40px;padding:0 14px 0 12px;border-radius:var(--r-pill);font-size:13px;font-weight:600;transition:transform .25s var(--spring),background .2s,color .2s}
  .panel-toggle svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8}
  .panel-toggle:active{transform:scale(.96)}
  .panel-toggle[aria-expanded=true]{background:#fff;color:var(--dark);text-shadow:none}
  .mode-tour .panel-toggle,.is-intro .panel-toggle,.mode-walk .panel-toggle{display:none}
  .scene-panel{top:112px;right:var(--gap);width:min(310px,calc(100vw - 2*var(--gap)));max-height:calc(100dvh - 128px);transform-origin:top right}
  body:not(.panel-open) .scene-panel{opacity:0;transform:scale(.92);filter:blur(4px);pointer-events:none;visibility:hidden}
  .panel-open .mode-panel{opacity:0;pointer-events:none}
  .mode-panel{width:auto;padding:8px;flex-direction:row;align-items:center}
  .mode-panel #campus-status,.mode-panel #mode-status,.mode-panel #pick-start-button,.mode-panel #pick-instruction,.mode-panel .profile-link{display:none!important}
  .mode-panel .primary{width:auto}
  .ground-controls{left:var(--gap);right:var(--gap);width:auto}
  .readout,.attribution{display:none}
  .aircraft-card{top:auto;bottom:var(--gap);max-height:62dvh;overflow-y:auto}
}
/* Phones held sideways: the expected way to use the twin */
@media (orientation:landscape) and (max-height:520px){
  :root{--gap:max(12px,env(safe-area-inset-left))}
  .appbar{top:8px;height:40px}
  .brand,.header-actions .text-button{height:36px}
  .mode-tab{min-height:30px;font-size:12px;padding:0 14px}
  .intro{width:min(470px,58vw);padding:16px 18px 14px;bottom:10px}
  .intro h1{font-size:30px}.intro h1 span{margin-top:4px;font-size:15px}
  .intro-lede{font-size:12.5px;margin:8px 0 12px}
  .intro .primary,.intro .secondary{min-height:40px;font-size:14px}
  .intro-status{display:none}
  .tour-caption{bottom:72px;width:min(400px,46vw);padding:12px 14px 10px}
  .tour-caption h2{font-size:21px;margin-bottom:4px}
  .tour-index{margin-bottom:2px}
  .tour-caption p#tour-text{font-size:12px;line-height:1.42;margin-bottom:8px}
  #tour-facts{padding-top:6px}#tour-facts dd{font-size:13px}
  .tour-rail{bottom:10px}
  .tour-rail .icon-button,.chapters button{height:38px;width:38px}
  .panel-toggle{top:56px;min-height:36px}
  .scene-panel{top:100px;bottom:10px;max-height:none;width:min(310px,42vw)}
  .panel-block{padding:10px 12px}
  .mode-panel{bottom:10px;padding:6px}
  .mode-panel .primary{min-height:38px;font-size:14px}
  /* The wrapper must not carry backdrop-filter: it would become the containing block of the fixed joystick row. */
  .ground-controls{left:auto;right:var(--gap);bottom:auto;top:56px;width:auto;padding:0;animation:none;background:none;border:0;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
  .ground-controls__head{background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid var(--stroke);box-shadow:inset 0 1px 0 var(--edge),var(--shadow);border-radius:var(--r-pill);padding:4px 4px 4px 14px}
  .ground-controls .height-control,.ground-controls .height-help,.ground-controls .speed-control{display:none}
  .ground-controls__body{position:fixed;left:var(--gap);right:var(--gap);bottom:10px;padding:0;justify-content:space-between;align-items:flex-end;pointer-events:none}
  .ground-controls__body>*{pointer-events:auto}
  .ground-controls__body .walk-actions p{display:none}
  .walk-actions .touch-actions{flex-direction:column;margin:0}
  .stick{width:100px;height:100px}
  .touch-actions button{min-height:38px}
  .aircraft-card{top:56px;bottom:10px;max-height:none;width:min(360px,48vw)}
  .compare{padding:12px 18px;max-height:calc(100dvh - 20px)}
  .compare h2{font-size:20px;margin:0 0 4px}
  .compare .dialog-close{position:absolute;top:10px;right:14px}
  .compare table{font-size:12px;margin:0 0 8px}
  .compare th,.compare td{padding:4px 8px}
  .compare tr.group th{padding-top:8px}
  #tour-facts dd{font-size:22px}
  #time-value{font-size:22px}
  .label b{font-size:11px;padding:5px 9px 4px}
}
@media(max-width:560px) and (orientation:portrait){
  .tour-caption h2{font-size:24px}
  #tour-facts{grid-template-columns:repeat(2,auto)}
  #tour-facts div:nth-child(3){display:none}
  .ground-controls .height-control,.ground-controls .height-help,.ground-controls .speed-control,.ground-controls__body p{display:none}
  .ground-controls{background:none;border:0;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none;padding:0}
  .ground-controls__head{position:fixed;top:64px;left:var(--gap);right:var(--gap);background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid transparent;box-shadow:var(--shadow)}
  .ground-controls__body{justify-content:space-between;align-items:flex-end;padding:0}
  .walk-actions .touch-actions{flex-direction:column;margin:0}
}
@media (orientation:portrait) and (max-width:600px) and (pointer:coarse){
  .rotate-hint:not([hidden]){display:flex;position:fixed;left:var(--gap);right:var(--gap);top:64px;z-index:7;align-items:center;gap:12px;padding:12px 12px 12px 16px;border-radius:18px;background:var(--glass-strong);font-size:14px;line-height:1.35;animation:sheet .5s var(--ease)}
  .rotate-hint svg{width:28px;height:28px;flex-shrink:0;fill:none;stroke:#fff;stroke-width:1.5}
  .rotate-hint button{margin-left:auto;min-height:34px;padding:0 14px;border:0;border-radius:var(--r-pill);background:#fff;color:var(--dark);text-shadow:none;font-size:13px;font-weight:600}
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  :root{--glass:rgba(28,33,40,.86) padding-box,var(--rim) border-box;--glass-strong:rgba(22,26,32,.92) padding-box,var(--rim) border-box;--glass-thin:rgba(28,33,40,.8)}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition-duration:.01ms!important;animation:none!important}}

/* Project switcher: always visible next to the brand */
.project-switch{justify-self:start;position:relative;margin-left:8px}
.appbar{grid-template-columns:auto auto 1fr auto 1fr auto}
.appbar .brand{grid-column:1}
.project-switch{grid-column:2}
.appbar .modes{grid-column:4}
.appbar .header-actions{grid-column:6}
.project-button{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px 0 16px;border-radius:var(--r-pill);font-size:13px;font-weight:600;background:var(--glass);-webkit-backdrop-filter:var(--blur);backdrop-filter:var(--blur);border:1px solid transparent;box-shadow:var(--shadow);transition:transform .25s var(--spring)}
.project-button:active:not(:disabled){transform:scale(.97)}
.project-button .project-k{font-weight:500;color:var(--ink-2)}
.project-button svg{width:11px;height:8px;fill:none;stroke:currentColor;stroke-width:1.8;transition:transform .3s var(--ease)}
.project-button[aria-expanded=true] svg{transform:rotate(180deg)}
.project-menu{position:absolute;top:calc(100% + 8px);left:0;width:300px;padding:6px;border-radius:22px;z-index:8;background:var(--glass-strong);-webkit-backdrop-filter:var(--blur-strong);backdrop-filter:var(--blur-strong);border:1px solid transparent;box-shadow:var(--shadow-lift);transform-origin:top left;animation:sheet .35s var(--ease)}
.project-menu button{display:block;width:100%;text-align:left;padding:10px 12px;border:0;border-radius:14px;background:none;transition:background .2s}
.project-menu button b{display:block;font-size:14px;font-weight:600}
.project-menu button small{display:block;margin-top:2px;font-size:12px;color:var(--ink-2)}
@media(hover:hover){.project-menu button:hover:not([aria-checked=true]){background:rgba(255,255,255,.12)}}
.project-menu button[aria-checked=true]{background:#fff;color:var(--dark);text-shadow:none}
.project-menu button[aria-checked=true] small{color:#55555b}
/* Intro project chooser */
.intro-projects{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:0 0 16px;padding:4px;border-radius:18px;background:rgba(255,255,255,.10)}
.intro-project{min-height:52px;border:0;border-radius:14px;background:none;text-align:left;padding:8px 10px;transition:background .25s var(--ease),transform .2s var(--spring)}
.intro-project b{display:block;font-size:13px;font-weight:600}
.intro-project small{display:block;font-size:11px;font-weight:500;color:var(--ink-2)}
.intro-project[aria-checked=true]{background:#fff;color:var(--dark);text-shadow:none}
.intro-project[aria-checked=true] small{color:#55555b}
.intro-project:active:not(:disabled){transform:scale(.97)}
/* Tour sub-views (Terrain: contours, drainage, slope, parcels) */
.tour-steps{display:flex;align-items:center;gap:10px;margin-top:14px;padding:4px;border-radius:var(--r-pill);background:rgba(255,255,255,.10);width:max-content}
.tour-steps .icon-button{width:36px;height:36px;background:none;border:0;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}
.tour-steps .icon-button:active{transform:scale(.9)}
#step-label{min-width:150px;text-align:center;font-size:13px;font-weight:600}
@media(max-width:900px){.project-button .project-k{display:none}.project-button{height:38px;padding:0 12px}}
@media (orientation:landscape) and (max-height:520px){
  .project-button{height:36px;font-size:12px}
  .intro-projects{margin-bottom:10px}.intro-project{min-height:40px;padding:5px 8px}.intro-project small{display:none}
  .tour-steps{margin-top:8px}.tour-steps .icon-button{width:30px;height:30px}
}
@media(max-width:560px) and (orientation:portrait){.intro-projects{grid-template-columns:repeat(3,1fr)}}

/* Real phones (2026-10-19 field report): no text inflation, no wrapping chrome */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
.project-button{white-space:nowrap;max-width:min(240px,40vw)}
#project-name{overflow:hidden;text-overflow:ellipsis;min-width:0}
.mode-tab{white-space:nowrap}
/* VR controls only where VR can happen (Quest browser is wide); never on phones */
@media(max-width:900px){#vr-button,#vr-help,#vr-status{display:none!important}}
/* Portrait phones: brand · project · About on row one, Tour/Explore/Walk on row two */
@media(max-width:600px) and (orientation:portrait){
  .appbar{top:max(8px,env(safe-area-inset-top));height:auto;grid-template-columns:auto 1fr auto;grid-template-rows:40px 40px;row-gap:8px;column-gap:8px}
  .appbar .brand{grid-column:1;grid-row:1;height:40px}
  .project-switch{grid-column:2;grid-row:1;margin:0;justify-self:start;min-width:0;max-width:100%}
  .project-button{max-width:100%;height:40px}
  .appbar .header-actions{grid-column:3;grid-row:1}
  .appbar .modes{grid-column:1/-1;grid-row:2;justify-self:center}
  .mode-tab{min-height:32px;padding:0 18px}
  .panel-toggle{top:calc(max(8px,env(safe-area-inset-top)) + 96px)}
  .scene-panel{top:calc(max(8px,env(safe-area-inset-top)) + 144px);max-height:calc(100dvh - 170px)}
  .rotate-hint:not([hidden]){top:calc(max(8px,env(safe-area-inset-top)) + 96px)}
  .ground-controls__head{top:calc(max(8px,env(safe-area-inset-top)) + 96px)!important}
  .project-menu{width:min(300px,calc(100vw - 24px))}
  .intro{bottom:max(12px,env(safe-area-inset-bottom))}
  .intro h1{font-size:34px}
  .intro-lede{font-size:14px;margin:10px 0 14px}
  .intro-projects{margin-bottom:12px}
  .mode-panel{bottom:max(12px,env(safe-area-inset-bottom))}
}