/* Pocket Cover demos: the CHGame docs look (neobrutalism in the brand palette).
   Flat colours, ink outlines, hard shadows offset down and right; no blur or
   gradients. Shared by the studio (index.html), the scroller and standalone. */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400..800;1,9..40,400..800&family=JetBrains+Mono:wght@400;600;700&family=Space+Grotesk:wght@500;700&display=swap');
:root{
  color-scheme:light;
  --ch-ink:#252628;--ch-yellow:#F9D84A;--ch-cream:#FFFDF6;--ch-paper:#FBFAF5;--ch-mint:#BDE2C7;
  --ch-sage:#B7DACC;--ch-lavender:#C8B6F3;--ch-coral:#F4A28C;--ch-dots:#E6E2D3;--ch-muted:#5F5E58;
  --ch-line:2px solid var(--ch-ink);--ch-shadow:4px 4px 0 var(--ch-ink);--ch-shadow-sm:3px 3px 0 var(--ch-ink);--ch-radius:8px;
  --ch-sans:'DM Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --ch-display:'Space Grotesk','DM Sans',system-ui,sans-serif;
  --ch-mono:'JetBrains Mono',Consolas,Menlo,monospace;
  --cover-size:256px;--thumb:128px;
  font:15px/1.5 var(--ch-sans);color:var(--ch-ink);background:var(--ch-paper)
}
*{box-sizing:border-box}
body{margin:0;background-color:var(--ch-paper);background-image:radial-gradient(var(--ch-dots) 1.2px,transparent 1.3px);background-size:22px 22px;color:var(--ch-ink)}
h1,h2,h3{font-family:var(--ch-display);font-weight:700;letter-spacing:-.02em}
button,input,select{font:inherit;color:var(--ch-ink)}
button,input,select{border:var(--ch-line);border-radius:var(--ch-radius);background:var(--ch-cream);padding:10px 13px}
input,select{box-shadow:var(--ch-shadow-sm)}
button{cursor:pointer;font-family:var(--ch-display);font-weight:700;box-shadow:var(--ch-shadow-sm);transition:transform .08s,box-shadow .08s}
button:hover:not(:disabled){transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ch-ink)}
button:active:not(:disabled){transform:translate(3px,3px);box-shadow:0 0 0 var(--ch-ink)}
button:disabled{opacity:.45;cursor:default;box-shadow:none}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--ch-ink);outline-offset:3px}
a{color:var(--ch-ink);font-weight:600;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px}
a:hover{background:var(--ch-yellow)}
canvas{image-rendering:pixelated;image-rendering:crisp-edges;image-rendering:pixelated}
.mono{font-family:var(--ch-mono)}

/* Studio */
.shell{max-width:1360px;padding:28px 36px 64px;margin:auto}
.brand{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 16px;border:var(--ch-line);border-radius:var(--ch-radius);background:var(--ch-cream);box-shadow:var(--ch-shadow)}
.brand strong{font-family:var(--ch-display);font-size:15px;letter-spacing:.12em}
.brand a{font-size:13px}
.eyebrow{display:inline-block;font:600 11px var(--ch-mono);letter-spacing:.1em;text-transform:uppercase;background:var(--ch-lavender);border:var(--ch-line);border-radius:var(--ch-radius);padding:4px 9px;box-shadow:var(--ch-shadow-sm)}
header{padding:36px 0 18px}
h1{font-size:clamp(32px,5vw,54px);line-height:1.04;margin:16px 0 12px}
h1 span{background:var(--ch-yellow);padding:0 .12em;border-radius:6px}
header p{color:var(--ch-muted);max-width:620px;margin:0;font-size:16px}
.controls{display:grid;grid-template-columns:1.2fr 1fr auto;gap:16px;align-items:end;margin:24px 0 10px;padding:18px;background:var(--ch-cream);border:var(--ch-line);border-radius:var(--ch-radius);box-shadow:var(--ch-shadow)}
label{display:grid;gap:7px;font:600 12px var(--ch-mono);text-transform:uppercase;letter-spacing:.06em;min-width:0}
input,select{font:15px var(--ch-sans);width:100%;min-width:0;text-transform:none;letter-spacing:0}
.primary{background:var(--ch-yellow)}
#message{min-height:22px;color:var(--ch-muted);font:12px var(--ch-mono)}
.workspace{display:grid;grid-template-columns:300px minmax(0,1fr);gap:28px;margin-top:14px;align-items:start}
.workspace>*,.selected>div{min-width:0}
.selected{position:sticky;top:20px;background:var(--ch-cream);border:var(--ch-line);border-radius:var(--ch-radius);box-shadow:var(--ch-shadow);padding:20px}
/* The selected cover is the main focus and keeps an exact 2x enlargement;
   gallery thumbnails show the native 128px canvas at 1x. */
#preview{display:block;width:var(--cover-size);height:var(--cover-size);min-width:var(--cover-size);flex:0 0 var(--cover-size);margin-inline:auto;border:var(--ch-line);border-radius:4px;box-sizing:content-box}
.selected h2{font-size:20px;margin:16px 0 4px;text-transform:capitalize}
.selected p{font-size:13px;color:var(--ch-muted);margin:0}
.selected .scale-note{display:inline-block;font:600 11px var(--ch-mono);color:var(--ch-ink);background:var(--ch-sage);border:var(--ch-line);border-radius:6px;padding:2px 7px;margin:14px 0 0}
.palette{display:flex;margin:16px 0;border:var(--ch-line);border-radius:6px;overflow:hidden}
.swatch{flex:1;height:18px}
.download{width:100%}
.gallery-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;margin:0 0 18px}
.gallery-head h2{font-size:24px;margin:0 0 2px}
.gallery-head p{font:12px var(--ch-mono);color:var(--ch-muted);margin:0}
.pager{display:flex;gap:10px}
.pager button{padding:8px 12px;background:var(--ch-sage)}
#gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(152px,1fr));gap:18px;align-items:start}
.sample{display:flex;flex-direction:column;align-items:center;min-width:0;padding:10px 10px 0;background:var(--ch-cream);text-align:left;font-family:var(--ch-sans);font-weight:400}
.sample canvas{display:block;width:var(--thumb);height:var(--thumb);flex:0 0 var(--thumb);border:var(--ch-line);border-radius:4px;box-sizing:content-box}
.sample[aria-pressed=true]{background:var(--ch-mint);box-shadow:var(--ch-shadow)}
.sample .caption{padding:8px 0 10px;display:block;width:100%;min-width:0}
.sample .number{font:700 11px var(--ch-mono);display:block;margin-bottom:2px;letter-spacing:.04em}
.sample .trait{font-size:12px;color:var(--ch-muted);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-transform:capitalize}
.sample[aria-pressed=true] .trait{color:var(--ch-ink)}
.footer{font-size:13px;color:var(--ch-muted);margin-top:36px;padding:16px 18px;border:var(--ch-line);border-radius:var(--ch-radius);background:var(--ch-cream)}

/* 200% hover tooltip, shared by studio gallery and scroller */
#zoom{position:fixed;left:0;top:0;pointer-events:none;z-index:50;display:none;background:var(--ch-cream);border:var(--ch-line);border-radius:var(--ch-radius);box-shadow:var(--ch-shadow);padding:6px}
#zoom canvas{display:block;width:256px;height:256px;border:var(--ch-line);border-radius:4px;box-sizing:content-box;cursor:default}
#zoom div{font:700 12px var(--ch-mono);padding:6px 2px 0;max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

@media(max-width:999px){
  .shell{padding:24px 24px 48px}
  .workspace{grid-template-columns:minmax(0,1fr);gap:24px}
  .selected{position:static;display:grid;grid-template-columns:260px minmax(0,1fr);gap:24px;align-items:center}
  .selected h2{margin-top:0}
}
@media(max-width:680px){
  .shell{padding:16px 16px 40px}
  .brand{flex-wrap:wrap;gap:8px}
  .brand strong,.brand a{font-size:12px}
  .controls{grid-template-columns:minmax(0,1fr);gap:14px;padding:14px}
  .selected{grid-template-columns:minmax(0,1fr);gap:0;padding:14px}
  .selected h2{margin-top:16px}
  #gallery{grid-template-columns:repeat(auto-fill,minmax(146px,1fr));gap:14px}
}
@media(max-width:340px){:root{--cover-size:128px}}

/* Infinite scroller */
.scroller{font-size:13px}
.scroller>header{position:sticky;top:0;z-index:3;padding:10px 14px;display:flex;flex-wrap:wrap;gap:12px 18px;align-items:center;background:var(--ch-cream);border-bottom:var(--ch-line);box-shadow:0 4px 0 var(--ch-ink)}
.scroller>header h1{font-size:18px;margin:0}
.scroller>header label{display:flex;align-items:center;gap:8px}
.scroller>header input{width:220px;padding:6px 9px}
.scroller .hint{color:var(--ch-muted)}
.scroller .hint b{font-family:var(--ch-mono);color:var(--ch-ink)}
#grid{display:grid;grid-template-columns:repeat(var(--cols),max-content);gap:0 18px;padding:18px 14px 12px;width:max-content}
.colhead{position:sticky;top:calc(var(--head,56px) + 4px);z-index:1;margin:0 0 14px;padding:5px 8px;font:700 11px var(--ch-mono);text-transform:uppercase;letter-spacing:.05em;background:var(--ch-sage);border:var(--ch-line);border-radius:6px;box-shadow:var(--ch-shadow-sm)}
.cell{margin-bottom:18px;width:152px;padding:8px;background:var(--ch-cream);border:var(--ch-line);border-radius:var(--ch-radius);box-shadow:var(--ch-shadow)}
.cell canvas{display:block;width:128px;height:128px;cursor:copy;border:var(--ch-line);border-radius:4px;box-sizing:content-box}
.cell:hover{background:var(--ch-mint)}
.tag{font:700 11px var(--ch-mono);margin-top:6px}
.sub{color:var(--ch-muted);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#sentinel{height:1px}
#toast{position:fixed;bottom:16px;right:16px;z-index:60;font:700 12px var(--ch-mono);background:var(--ch-yellow);border:var(--ch-line);border-radius:var(--ch-radius);box-shadow:var(--ch-shadow);padding:8px 12px;opacity:0;transition:opacity .2s;pointer-events:none}