/* ==========================================================================
   The universe — universe.html: a full-screen WebGL experience of the research. The point cloud is the page;
   type sits on it. Forest-black ground, ivory Figtree, brass labels, grain and vignette.
   ========================================================================== */
:root { --ground:#0d1813; --ivory:#f1ece0; --cream:#cdbf9a; --brass:#b48a3a; --serif:Figtree,sans-serif; --sans:Figtree,sans-serif; --mono:'JetBrains Mono',monospace; }
html,body{height:100%;margin:0;overflow:hidden;background:var(--ground);color:var(--ivory);font-family:var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit}
[hidden]{display:none!important}
::selection{background:rgba(180,138,58,.45)}
@keyframes rise{from{transform:translateY(110%) rotate(3deg);opacity:0}to{transform:none;opacity:1}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.2}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

#cloud{position:fixed;inset:0;width:100%;height:100%;display:block;cursor:grab;touch-action:none}
#cloud.is-dragging{cursor:grabbing}
.vignette{position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at 50% 50%,transparent 45%,rgba(0,0,0,.5) 100%)}
.grain{position:fixed;inset:0;pointer-events:none;opacity:.04;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .9 0'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");background-size:160px 160px}

/* chrome */
.uhead{position:fixed;top:0;left:0;right:0;z-index:20;display:flex;justify-content:space-between;align-items:center;padding:20px clamp(16px,3vw,40px);font-family:var(--mono);font-size:11px;letter-spacing:.14em;pointer-events:none}
.uhead a{pointer-events:auto;text-decoration:none;color:var(--ivory);display:flex;align-items:center;gap:10px;opacity:.85;transition:opacity .3s}
.uhead a:hover{opacity:1}
.uhead nav{display:flex;gap:26px}
.counter{position:fixed;right:clamp(16px,3vw,40px);top:50%;transform:translateY(-50%);z-index:20;display:grid;gap:10px;justify-items:end;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--cream)}
.counter .ticks{display:grid;gap:9px}
.counter .ticks i{display:block;width:14px;height:1px;background:rgba(241,236,224,.3);transition:width .4s,background .4s}
.counter .ticks i.on{width:30px;background:var(--brass)}
.arrows{position:fixed;right:clamp(16px,3vw,40px);bottom:clamp(16px,3vw,40px);z-index:20;display:flex;gap:8px}
.arrows button{appearance:none;width:46px;height:46px;border-radius:50%;border:1px solid rgba(241,236,224,.35);background:rgba(13,24,19,.3);color:var(--ivory);font-size:16px;cursor:pointer;transition:background .3s,border-color .3s}
.arrows button:hover{background:var(--brass);border-color:var(--brass)}
.arrows button:disabled{opacity:.3;cursor:default}
@media (max-width:699.98px){.counter{display:none}.uhead nav{gap:14px;font-size:10px}}

/* the text on each scene */
.scene{position:fixed;left:clamp(16px,4vw,64px);right:clamp(16px,4vw,64px);bottom:clamp(60px,10vh,120px);z-index:10;max-width:760px;pointer-events:none;transition:opacity .45s ease,transform .45s ease}
.scene.is-out{opacity:0;transform:translateY(16px)}
.scene a,.scene button{pointer-events:auto}
.kicker{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--brass);margin:0 0 14px;animation:fadeIn .8s .2s both}
.title{margin:0;font-family:var(--serif);font-weight:700;font-size:clamp(34px,4.6vw,68px);line-height:1;letter-spacing:-.04em;color:var(--ivory);text-wrap:balance}
.title .w{display:inline-block;overflow:hidden;vertical-align:bottom;padding:0 .04em .12em 0;margin:0 -.04em -.12em 0}
.title .w i{display:inline-block;font-style:normal;animation:rise .9s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--i) * 55ms + 120ms)}
.title em{font-style:normal;font-weight:700;color:var(--brass)}
.lede{margin:18px 0 0;max-width:44rem;font-family:var(--serif);font-weight:400;font-size:clamp(16px,1.2vw,18px);line-height:1.62;color:rgba(241,236,224,.82);animation:fadeIn .8s .5s both}
.facts{display:flex;flex-wrap:wrap;gap:12px 40px;margin:26px 0 0;padding:14px 0 0;border-top:1px solid rgba(205,191,154,.3);max-width:560px;animation:fadeIn .8s .6s both}
.fact b{display:block;font-family:var(--serif);font-weight:700;font-size:clamp(24px,2.3vw,34px);line-height:1;letter-spacing:-.03em;color:var(--ivory);font-variant-numeric:tabular-nums}
.fact span{display:block;margin-top:6px;font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:var(--cream)}
.cta{display:inline-block;margin-top:26px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--ivory);text-decoration:none;border-bottom:1px solid var(--brass);padding-bottom:4px;animation:fadeIn .8s .7s both;transition:color .3s}
.cta:hover{color:var(--brass)}
@media (max-width:699.98px){.scene{bottom:84px}.facts{gap:10px 22px}}

/* loader */
.loader{position:fixed;inset:0;z-index:50;background:var(--ground);display:grid;place-items:center;transition:opacity .8s ease .2s,visibility .8s .2s}
.loader.is-done{opacity:0;visibility:hidden}
.loader-in{display:grid;gap:16px;justify-items:center;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--cream)}
.loader-pct{font-family:var(--serif);font-weight:700;font-size:52px;line-height:1;letter-spacing:-.04em;color:var(--ivory);font-variant-numeric:tabular-nums}
.loader-bar{width:min(360px,60vw);height:1px;background:rgba(205,191,154,.25);position:relative;overflow:hidden}
.loader-bar i{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--brass);transition:width .2s linear}
/* courses page: the view switches and the course index */
.views{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0;animation:fadeIn .8s .55s both}
.views button{appearance:none;cursor:pointer;background:transparent;border:1px solid rgba(241,236,224,.35);color:var(--ivory);font-family:var(--mono);font-size:10px;letter-spacing:.14em;padding:8px 12px;border-radius:20px;transition:background .3s,border-color .3s,color .3s}
.views button:hover{border-color:var(--brass)}
.views button.on{background:var(--brass);border-color:var(--brass);color:#fff}
.cindex{position:fixed;right:clamp(16px,3vw,40px);top:50%;transform:translateY(-50%);z-index:20;display:grid;gap:6px;justify-items:end;margin:0;padding:0;list-style:none;max-width:260px}
.cindex button{appearance:none;cursor:pointer;background:none;border:0;padding:4px 0;font-family:var(--mono);font-size:10px;letter-spacing:.12em;color:rgba(205,191,154,.55);text-align:right;transition:color .3s,transform .3s}
.cindex button:hover{color:var(--ivory)}
.cindex button.on{color:var(--brass);transform:translateX(-6px)}
.cindex b{font-weight:400;margin-left:10px;color:rgba(241,236,224,.4)}
@media (max-width:899.98px){.cindex{display:none}}
.nogl{position:fixed;inset:0;display:grid;place-items:center;padding:24px;text-align:center;font-family:var(--serif);font-weight:400;font-size:18px;line-height:1.6;color:var(--ivory)}