/* Yetarch Plans: the drawing office.
   Layout: a sheet of drawing paper with a hairline grid, a title block for every plan, data set in mono like a drawing register.
   Red is the revision ink. Studio mode (the renders) lives at /studio/ and is reached by a wipe from paper to night. */
:root{
  --paper:#F4F3EF; --paper-2:#ECEAE4; --ink:#141618; --graphite:#3A3F43; --stone:#6E7478; --hair:#D6D5CF; --grid:rgba(20,22,24,.045);
  --red:#C8161D; --night:#141618; --white:#FAFAF8;
  --f-display:"Newsreader","Times New Roman",Georgia,serif;
  --f-body:"Manrope","Helvetica Neue",Arial,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
  --gut:clamp(16px,3.2vw,48px);
  --ease:cubic-bezier(.7,0,.2,1);
  color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 14px/1.6 var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
img:not([src]){visibility:hidden}
button{font:inherit;color:inherit}
::selection{background:var(--red);color:var(--white)}
:focus-visible{outline:1px solid var(--red);outline-offset:3px}
.wrap{padding-inline:var(--gut);max-width:1560px;margin-inline:auto}
.mono{font-family:var(--f-mono);letter-spacing:.06em}
.label{font:400 10px/1.2 var(--f-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--stone)}
h1,h2,h3{font-family:var(--f-display);font-weight:300;margin:0;letter-spacing:-.02em;text-wrap:balance}
h1 em,h2 em,h3 em{font-style:italic;font-weight:200}
.tnum{font-variant-numeric:tabular-nums}

/* header: a drawing title strip */
.top{position:sticky;top:0;z-index:40;background:rgba(244,243,239,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--ink);padding-top:env(safe-area-inset-top,0px)}
.top .wrap{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;height:60px}
.brand{font:500 13px/1 var(--f-mono);letter-spacing:.42em;text-transform:uppercase}
.nav{display:flex;gap:clamp(14px,2vw,30px);justify-content:center;font:400 11px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase}
.nav a{opacity:.62;transition:opacity .3s;white-space:nowrap}
.nav a:hover,.nav a[aria-current="page"]{opacity:1}
.tools{display:flex;align-items:center;gap:14px;font:400 11px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase}
.units{display:flex;border:1px solid var(--ink)}
.units button{border:0;background:none;padding:6px 8px;cursor:pointer;font:inherit;letter-spacing:.08em}
.units button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.bag-btn{border:1px solid var(--ink);background:none;padding:6px 10px;cursor:pointer;display:flex;gap:8px;align-items:center}
.bag-btn b{font-weight:500;min-width:1ch}
.mode{position:relative;display:flex;align-items:center;gap:0;border:1px solid var(--ink);border-radius:999px;padding:2px;cursor:pointer;background:none}
.mode span{position:relative;z-index:1;padding:6px 12px;border-radius:999px;transition:color .5s var(--ease)}
.mode i{position:absolute;top:2px;bottom:2px;left:2px;width:calc(50% - 2px);border-radius:999px;background:var(--ink);transition:transform .6s var(--ease)}
.mode span:first-of-type{color:var(--paper)}
.mode.to-studio:hover i{transform:translateX(100%)}
.mode.to-studio:hover span:first-of-type{color:var(--ink)}
.mode.to-studio:hover span:last-of-type{color:var(--paper)}

/* page transition: paper to night, night to paper */
.wipe{position:fixed;inset:0;z-index:200;pointer-events:none;background:var(--night);clip-path:inset(0 0 0 100%)}
.wipe.paper{background:var(--paper)}
.wipe canvas{position:absolute;inset:0;width:100%;height:100%}
.wipe .wl{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font:200 clamp(48px,9vw,140px)/1 var(--f-display);font-style:italic;color:var(--white);letter-spacing:-.03em;opacity:0;white-space:nowrap}
.wipe.paper .wl{color:var(--ink)}

/* bag drawer */
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(440px,100vw);z-index:120;background:var(--paper);border-left:1px solid var(--ink);transform:translateX(100%);transition:transform .7s var(--ease);display:flex;flex-direction:column;padding-top:env(safe-area-inset-top,0px)}
.drawer.open{transform:none}
.scrim{position:fixed;inset:0;z-index:110;background:rgba(20,22,24,.35);opacity:0;pointer-events:none;transition:opacity .5s}
.scrim.open{opacity:1;pointer-events:auto}
.dr-head{display:flex;justify-content:space-between;align-items:center;padding:18px 22px;border-bottom:1px solid var(--ink)}
.dr-head button{border:0;background:none;cursor:pointer;font:400 11px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase}
.dr-body{flex:1;overflow:auto;padding:8px 22px}
.dr-item{display:grid;grid-template-columns:64px 1fr auto;gap:14px;padding:16px 0;border-bottom:1px solid var(--hair);align-items:start}
.dr-item img{width:64px;height:48px;object-fit:contain;background:var(--paper-2)}
.dr-item h4{margin:0;font:300 18px/1.2 var(--f-display)}
.dr-item p{margin:4px 0 0;font:400 11px/1.5 var(--f-mono);color:var(--stone);letter-spacing:.04em}
.dr-item button{border:0;background:none;cursor:pointer;font:400 10px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--stone)}
.dr-empty{padding:40px 0;color:var(--stone);font:300 18px/1.4 var(--f-display)}
.dr-foot{border-top:1px solid var(--ink);padding:18px 22px calc(18px + env(safe-area-inset-bottom,0px));display:grid;gap:14px}
.dr-total{display:flex;justify-content:space-between;font:400 12px/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase}
.dr-total b{font:300 26px/1 var(--f-display);letter-spacing:-.01em;text-transform:none}

.btn{appearance:none;display:flex;justify-content:center;align-items:center;gap:10px;width:100%;border:1px solid var(--ink);background:var(--ink);color:var(--paper);padding:16px 18px;font:500 11px/1 var(--f-mono);letter-spacing:.16em;text-transform:uppercase;cursor:pointer;transition:background .35s,border-color .35s}
.btn:hover{background:var(--red);border-color:var(--red)}
.btn.ghost{background:none;color:var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn[disabled]{opacity:.4;pointer-events:none}

.toast{position:fixed;left:50%;bottom:calc(22px + env(safe-area-inset-bottom,0px));transform:translate(-50%,16px);background:var(--ink);color:var(--paper);font:400 11px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;padding:14px 18px;opacity:0;pointer-events:none;transition:all .4s;z-index:150;border-left:2px solid var(--red)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* footer: a title block */
.foot{margin-top:clamp(80px,10vw,140px);border-top:1px solid var(--ink)}
.tb{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;border-bottom:1px solid var(--ink)}
.tb>div{padding:18px var(--gut);border-right:1px solid var(--ink);min-width:0}
.tb>div:last-child{border-right:0}
.tb .big{font:200 clamp(36px,5vw,72px)/.9 var(--f-display);letter-spacing:-.03em}
.tb .big em{font-style:italic}
.tb p,.tb a{display:block;font:400 11px/1.8 var(--f-mono);letter-spacing:.06em;margin:6px 0 0}
.tb a:hover{color:var(--red)}
.foot-base{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:14px var(--gut) calc(14px + env(safe-area-inset-bottom,0px));font:400 10px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--stone)}

@media (max-width:900px){
  .top .wrap{grid-template-columns:auto auto;height:auto;padding-block:12px;row-gap:10px}
  .nav{grid-column:1/-1;grid-row:2;justify-content:flex-start;overflow-x:auto;scrollbar-width:none}
  .tools{justify-self:end}
  .units{display:none}
  .tb{grid-template-columns:1fr 1fr}
  .tb>div{border-bottom:1px solid var(--ink)}
  .tb>div:first-child{grid-column:1/-1}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}