/* Construct Case playground (/playground). One box template for every test:
   navy matte cover, gold rules and line art, serif title, small-caps
   subtitle, and a colored spine per construct family. */
.pg-page { --pg-navy: #1d2b45; --pg-navy-2: #23344f; --pg-gold: #c9a45c; --pg-cream: #f3ead8;
  --pg-leather: #7a4a28; --pg-leather-dark: #4e2d16; --pg-suede: #b98c62;
  --fam-rel: #ad4a26; --fam-nar: #2f6f6a; --fam-cog: #6d8a5a; --fam-att: #6a4f86; --fam-per: #9a7a3a; --fam-cli: #4a6a8f; --fam-soon: #8b8577;
  max-width: var(--maxw); margin: 0 auto; padding: 0 16px 48px; }
.pg-head { text-align: left; }
.pg-modes { display: inline-flex; gap: 4px; padding: 4px; margin: 14px 0 6px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--surface); }
.pg-mode { padding: 7px 18px; border-radius: 999px; color: var(--pg-navy); font-weight: 600; text-decoration: none; font-size: 0.92rem; }
.pg-mode.is-active { background: var(--pg-navy); color: #fff; }
.pg-mode-note { color: var(--muted); max-width: var(--measure); font-size: 0.95rem; }
.pg-notice { border: 1px solid var(--border-strong); background: var(--surface); border-radius: var(--radius); padding: 16px 20px; margin: 8px 0 20px; }
.pg-notice h2 { margin: 0 0 6px; font-size: 1.15rem; }
.pg-stage { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 32px; align-items: start; }
.pg-shelf { border: 0; padding: 0; margin: 0; min-width: 0; }
.pg-legend { font-family: var(--font-serif); font-size: 1.2rem; margin-bottom: 10px; }
.pg-hint { display: block; font-family: var(--font-sans); font-size: 0.85rem; color: var(--muted); }
.pg-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 22px 18px; }
.pg-item { display: flex; flex-direction: column; align-items: center; gap: 8px; position: relative; }
.pg-check { position: absolute; top: 6px; left: 6px; width: 18px; height: 18px; z-index: 3; accent-color: var(--pg-navy); }
.pg-js .pg-check { opacity: 0; pointer-events: none; }
.pg-pick { display: block; cursor: pointer; perspective: 700px; border-radius: 4px; }
.pg-js .pg-pick { cursor: grab; }
.pg-check:focus-visible + .pg-pick { outline: 3px solid var(--brand); outline-offset: 4px; }
.pg-access { font-size: 0.78rem; color: var(--muted); text-align: center; line-height: 1.35; }

/* The box: matte cover + a real spine face, in perspective. */
.pg-pick { perspective: 900px; padding-left: 14px; }
.pg-box { position: relative; display: block; width: 138px; height: 194px; transform-style: preserve-3d;
  transform: rotateY(30deg); transition: transform 0.35s cubic-bezier(.2,.7,.2,1); --fam: var(--fam-per); }
.pg-box::after { content: ""; position: absolute; left: 8%; right: -6%; bottom: -14px; height: 16px; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(28,26,22,.32), transparent); transform: translateZ(-20px); filter: blur(2px); }
.pg-pick:hover .pg-box, .pg-check:focus-visible + .pg-pick .pg-box { transform: rotateY(20deg) translateY(-5px); }
.pg-check:checked + .pg-pick .pg-box { transform: rotateY(20deg) translateY(-3px); }
.pg-check:checked + .pg-pick .pg-cover::before { border-color: var(--pg-gold); box-shadow: 0 0 0 1px rgba(201,164,92,.5); }
.pg-still .pg-box, .pg-still .pg-pick:hover .pg-box, .pg-still .pg-check:checked + .pg-pick .pg-box { transition: none; transform: rotateY(30deg); }
@media (prefers-reduced-motion: reduce) { .pg-box, .pg-pick:hover .pg-box, .pg-check:checked + .pg-pick .pg-box { transition: none !important; transform: rotateY(30deg) !important; } }
.fam-rel { --fam: var(--fam-rel); } .fam-nar { --fam: var(--fam-nar); } .fam-cog { --fam: var(--fam-cog); }
.fam-att { --fam: var(--fam-att); } .fam-per { --fam: var(--fam-per); } .fam-cli { --fam: var(--fam-cli); } .fam-soon { --fam: var(--fam-soon); }
.pg-spine { position: absolute; top: 0; left: 0; width: 28px; height: 100%; transform-origin: left center; transform: rotateY(90deg);
  background: linear-gradient(90deg, rgba(0,0,0,.28), rgba(0,0,0,.05) 40%, rgba(0,0,0,.22)), var(--fam);
  display: flex; flex-direction: column; align-items: center; overflow: hidden; backface-visibility: visible; }
.pg-spine-band { display: block; width: 100%; height: 26px; flex: none; background: var(--pg-navy); border-bottom: 1px solid var(--pg-gold); }
.pg-spine-name { writing-mode: vertical-rl; transform: rotate(180deg); color: var(--pg-cream); font: 600 0.66rem/1 var(--font-serif); letter-spacing: .05em; padding: 10px 0; white-space: nowrap; }
.pg-cover { position: absolute; inset: 0; color: var(--pg-gold); display: flex; flex-direction: column; align-items: center; padding: 12px 10px 10px; text-align: center; border-radius: 1px 3px 3px 1px;
  background:
    linear-gradient(100deg, rgba(255,255,255,.07), transparent 22%, transparent 78%, rgba(0,0,0,.18)),
    repeating-linear-gradient(0deg, rgba(255,255,255,.012) 0 1px, transparent 1px 3px),
    linear-gradient(180deg, #24365a, var(--pg-navy) 70%, #172338);
  box-shadow: inset 3px 0 0 rgba(0,0,0,.25), 6px 10px 18px -8px rgba(28,26,22,.45); }
.pg-cover::before { content: ""; position: absolute; inset: 5px; border: 1px solid rgba(201,164,92,.28); border-radius: 1px; pointer-events: none; }
.pg-mark { display: flex; flex-direction: column; align-items: center; gap: 2px; font: 500 0.62rem/1 var(--font-serif); letter-spacing: .05em; position: relative; }
.pg-mark svg { fill: none; stroke: currentColor; stroke-width: 1.2; }
.pg-rule { display: block; width: 62%; height: 1px; background: linear-gradient(90deg, transparent, var(--pg-gold), transparent); margin: 6px 0 7px; }
.pg-js [data-pg-nojs] { display: none; }
.pg-title { font: 500 0.84rem/1.16 var(--font-serif); color: var(--pg-cream); min-height: 2.4em; display: flex; align-items: center; justify-content: center; position: relative; text-wrap: balance; }
.pg-title.is-long { font-size: 0.72rem; }
.pg-sub { font: 600 0.47rem/1.35 var(--font-sans); letter-spacing: .14em; text-transform: uppercase; color: var(--pg-gold); margin-top: 5px; position: relative; }
.pg-art { flex: 1; display: flex; align-items: center; justify-content: center; width: 100%; min-height: 0; position: relative; }
.pg-art-svg { width: 80%; max-height: 64px; fill: none; stroke: var(--pg-gold); stroke-width: 1; stroke-linecap: round; stroke-linejoin: round; }
.pg-art-svg .f, .pg-art-svg .f circle { fill: var(--pg-gold); stroke: none; }
.pg-art-svg .d { stroke-dasharray: 2.5 3; }
.pg-art-svg text { fill: var(--pg-gold); stroke: none; font: 600 7px var(--font-serif); letter-spacing: .12em; text-anchor: middle; }
.pg-diamond { position: relative; display: block; width: 74%; height: 1px; background: linear-gradient(90deg, transparent, var(--pg-gold) 20%, var(--pg-gold) 80%, transparent); }
.pg-diamond::after { content: ""; position: absolute; left: 50%; top: -3px; width: 6px; height: 6px; background: var(--pg-gold); transform: translateX(-50%) rotate(45deg); }
.is-soon .pg-cover { background: linear-gradient(180deg, #303848, #262d3b); }
.pg-soon-tag { position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); background: transparent; color: var(--pg-cream); font: 600 0.52rem/1 var(--font-sans); letter-spacing: .18em; text-transform: uppercase; padding: 4px 8px; border: 1px solid rgba(201,164,92,.7); white-space: nowrap; }

/* The open leather Construct Case. */
.pg-case-wrap { position: sticky; top: 16px; }
.pg-case { position: relative; border-radius: 14px; padding: 12px; background:
  radial-gradient(120% 80% at 30% 10%, #8c5a33 0%, var(--pg-leather) 45%, var(--pg-leather-dark) 100%);
  box-shadow: inset 0 0 0 2px #3c2210, inset 0 0 0 5px rgba(201,164,92,.25), 0 18px 30px -18px rgba(28,26,22,.6); }
.pg-lid { height: 120px; border-radius: 8px; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(90% 90% at 50% 40%, #c79a6f, var(--pg-suede) 55%, #9c7049);
  box-shadow: inset 0 0 0 1px rgba(60,34,16,.5), inset 0 0 0 6px rgba(255,255,255,.05); }
.pg-emboss { display: flex; flex-direction: column; align-items: center; color: #6e4426; text-shadow: 0 1px 0 rgba(255,236,210,.35); }
.pg-emboss svg { fill: none; stroke: currentColor; stroke-width: 1.2; filter: drop-shadow(0 1px 0 rgba(255,236,210,.35)); }
.pg-emboss-word { font: 600 1.25rem/1.1 var(--font-serif); letter-spacing: .03em; margin-top: 2px; }
.pg-emboss-sub { font: 600 0.58rem/1.4 var(--font-sans); letter-spacing: .22em; text-transform: uppercase; }
.pg-tray { margin-top: 10px; min-height: 178px; border-radius: 8px; padding: 12px 10px 10px; display: flex; flex-wrap: wrap; gap: 5px; align-content: flex-end; align-items: flex-end;
  background: linear-gradient(180deg, #4a2b16, #5e3a1f 30%, #6b4426); box-shadow: inset 0 8px 14px rgba(0,0,0,.35); }
.pg-case.is-over .pg-tray { box-shadow: inset 0 0 0 2px var(--pg-gold), inset 0 8px 14px rgba(0,0,0,.35); }
.pg-empty { width: 100%; text-align: center; color: #e3cfae; font-family: var(--font-serif); margin: auto 0; align-self: center; }
.pg-handle { width: 90px; height: 12px; margin: 10px auto 0; border-radius: 0 0 10px 10px; background: var(--pg-leather-dark); box-shadow: inset 0 -2px 0 rgba(0,0,0,.3); }
.pg-mini { overflow: hidden; position: relative; width: 40px; height: 150px; flex: none; cursor: pointer; display: flex; flex-direction: column; align-items: center;
  background: linear-gradient(90deg, rgba(0,0,0,.28), rgba(0,0,0,.04) 35%, rgba(0,0,0,.2)), var(--fam);
  border-radius: 2px 2px 0 0; box-shadow: 3px 0 6px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.15); }
.pg-mini.is-soon { opacity: .85; }
.pg-mini-band { display: block; width: 100%; height: 22px; flex: none; background: var(--pg-navy); border-bottom: 1px solid var(--pg-gold); }
.pg-mini-name { writing-mode: vertical-rl; transform: rotate(180deg); color: var(--pg-cream); font: 600 0.74rem/1 var(--font-serif); letter-spacing: .05em; padding: 10px 0 6px; white-space: nowrap; }
.pg-mini::after { content: ""; position: absolute; bottom: 8px; left: 50%; width: 8px; height: 8px; margin-left: -4px; border: 1px solid var(--pg-gold); border-radius: 50%; opacity: .8; }
.pg-mini:focus-visible { outline: 2px solid var(--pg-gold); outline-offset: 2px; }
.pg-count { text-align: center; color: var(--muted); font-size: 0.88rem; margin: 10px 0 4px; }
.pg-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.pg-share { margin-top: 14px; padding: 12px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius); }
.pg-share label { font-weight: 600; font-size: 0.9rem; }
.pg-share-row { display: flex; gap: 6px; margin-top: 6px; }
.pg-share-row input { flex: 1; min-width: 0; font-size: 0.85rem; padding: 6px 8px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); }
.pg-share-note { font-size: 0.8rem; color: var(--muted); margin: 6px 0 0; }
.pg-toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 12px); opacity: 0; background: var(--pg-navy); color: var(--pg-cream); border-left: 4px solid var(--pg-gold);
  padding: 10px 16px; border-radius: 6px; box-shadow: var(--shadow); font-size: 0.92rem; transition: opacity .2s, transform .2s; z-index: 50; }
.pg-toast.is-on { opacity: 1; transform: translate(-50%, 0); }
.pg-still .pg-toast { transition: none; }
.pg-more { margin-top: 18px; font-size: 0.9rem; }

/* Summary page */
.pg-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 20px; }
.pg-list-item { display: grid; grid-template-columns: 160px 1fr; gap: 20px; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.pg-list-box { perspective: 700px; display: flex; justify-content: center; }
.pg-list-body h2 { font-size: 1.15rem; margin: 0 0 4px; }
.pg-back { margin-top: 24px; }

@media (max-width: 820px) {
  .pg-stage { grid-template-columns: 1fr; }
  .pg-case-wrap { position: static; order: -1; }
  .pg-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pg-box { width: 128px; height: 180px; }
  .pg-list-item { grid-template-columns: 1fr; text-align: center; }
}
.pg-list-body .pg-access { text-align: left; font-size: 0.88rem; }