/* prismet.xyz Arcade: the browser collection, shaped like the app's Home (the lens iris, rounded tiles with the
   game's own art and accent, favorites, "On the cabinet"), drawn with the site's palette and type. Motion answers
   the player's move and is off under prefers-reduced-motion. The 3D cube lives at the end of this file. */
.arcade-home,.game-page,.tools-home { padding-bottom:48px; }
.prismet-app { --card-radius:18px; --panel-radius:20px; --accent:var(--brass); --wheel:conic-gradient(from 0deg,#DB4757,#E68C33,#CCA838,#4D8C6B,#3D75A8,#75579E,#DB4757); }
.prismet-app .eyebrow { font-family:var(--display);font-variant-caps:all-small-caps;letter-spacing:.12em;color:var(--brass-ink);font-size:.9rem;line-height:1.3; }

/* ── tools page (shares this sheet) ───────────────────────────────────────────────────────────── */
.arcade-intro { padding-top:clamp(32px,6vw,76px);padding-bottom:44px; }
.arcade-intro h1 { font-size:clamp(3rem,7vw,6.4rem);max-width:900px;line-height:1.02;letter-spacing:-.035em; }
.arcade-intro h1 em { color:var(--brass-ink);font-style:normal; }
.arcade-intro-bottom { display:flex;align-items:center;justify-content:space-between;gap:36px;margin-top:28px; }
.arcade-intro p { max-width:620px;color:var(--ink-2);font-size:1.15rem; }
.arcade-intro .eyebrow { font-size:var(--t-xs);margin-bottom:18px; }
.arcade-intro .arcade-native-note { font-size:var(--t-sm);margin-top:16px;color:var(--ink-3); }
.app-store { flex:none;gap:12px; }
.arcade-about { max-width:740px;padding-bottom:28px; }
.arcade-about h2 { font-size:clamp(2rem,4vw,3.2rem);margin:12px 0 18px; }
.arcade-about p { color:var(--ink-2); }
.arcade-footer { display:flex;gap:16px 40px;justify-content:space-between;flex-wrap:wrap;padding-block:24px;border-top:1px solid var(--rule);color:var(--ink-2);font-size:var(--t-sm); }
.arcade-footer a { min-height:44px;display:inline-flex;align-items:center; }
.tool-entry { display:grid;grid-template-columns:52px 1fr 44px;gap:24px;align-items:start;padding:36px 0;border-top:1px solid var(--rule);text-decoration:none; }
.tool-entry h2 { font-size:clamp(2rem,4vw,3.4rem);margin:8px 0 14px; }
.tool-entry p:not(.eyebrow) { color:var(--ink-2);max-width:650px; }
.tool-arrow { font-size:2rem;color:var(--brass-ink); }
.tool-entry:hover h2 { color:var(--brass-ink); }
[hidden] { display:none!important; }
.btn:disabled { opacity:.4;cursor:default; }

/* ── the shell: the lens index beside every page ──────────────────────────────────────────────── */
.prismet-app { display:grid;grid-template-columns:196px minmax(0,1fr);max-width:1640px;margin:auto;min-height:calc(100dvh - var(--bar)); }
.app-index { border-right:1px solid var(--rule);background:linear-gradient(90deg,transparent 88%,color-mix(in srgb,var(--brass) 6%,transparent)),var(--surface); }
.app-index-disclosure { position:sticky;top:var(--bar);max-height:calc(100dvh - var(--bar));overflow:auto;scrollbar-width:thin;padding:10px 10px 24px; }
.app-index-disclosure>summary { display:none; }
.app-home-link { display:flex;align-items:center;min-height:48px;padding:8px;color:var(--brass-ink);text-decoration:none;font-size:.94rem; }
.index-category { margin-top:9px; }
.index-category h2 { font:400 .72rem/1.4 var(--mono);color:var(--brass-ink);text-transform:uppercase;letter-spacing:.12em;padding:7px 10px; }
.facet-row { display:flex;align-items:center;gap:9px;min-height:44px;padding:5px 8px;text-decoration:none;border-radius:8px;color:var(--ink-2);transition:background .15s,color .15s; }
.facet-row img { width:28px;height:28px;object-fit:cover;border-radius:7px; }
.facet-row strong { font-weight:400;font-size:.9rem; }
.facet-row small { display:none; }
.facet-row:hover,.facet-row[aria-current] { background:var(--raised);color:var(--ink); }
.facet-row[aria-current] { box-shadow:inset 2px 0 var(--brass); }
.facet-hex { width:56px;height:56px;display:grid;place-items:center;color:var(--brass-ink);font-size:2.9rem; }
.facet-row .facet-hex { width:28px;height:28px;font-size:1.7rem; }
.app-main { min-width:0;padding:18px clamp(18px,2.4vw,38px) 32px; }
.app-main.game-page { padding-top:0; }

/* ── the library ──────────────────────────────────────────────────────────────────────────────── */
.library-heading { display:flex;justify-content:space-between;align-items:center;gap:18px;padding:6px 0 0; }
.library-brand { display:flex;align-items:center;gap:18px; }
.library-brand h1 { font-size:2.5rem;line-height:1.05; }
.library-brand .eyebrow { margin:0 0 4px; }
.library-brand p:last-child { color:var(--ink-2);margin-top:4px;font-size:1.05rem;font-style:italic; }
.library-heading>.btn { font-size:.83rem;padding-inline:13px;border-radius:999px; }
.iris { position:relative;flex:none;width:68px;height:68px;display:block; }
.iris::before { content:"";position:absolute;inset:-18px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--live) 30%,transparent),transparent 68%); }
.iris i { position:absolute;inset:0;border-radius:50%;background:var(--wheel);-webkit-mask:radial-gradient(circle,transparent 36%,#000 38%);mask:radial-gradient(circle,transparent 36%,#000 38%);animation:iris-turn 54s linear infinite; }
.iris::after { content:"";position:absolute;inset:36%;border-radius:50%;background:var(--ground);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--brass) 45%,transparent); }
@keyframes iris-turn { to { transform:rotate(1turn); } }
.library-intro { display:flex;justify-content:space-between;align-items:center;gap:12px;margin:12px 0 14px; }
.library-intro p { color:var(--ink-2);max-width:580px;font-size:1rem;line-height:1.5; }
.library-intro a { flex:none;font-size:.84rem; }
.library-toolbar { display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:12px 14px;border-radius:14px;border:1px solid color-mix(in srgb,var(--brass) 30%,var(--hair));background:var(--surface); }
.library-toolbar label { font-size:.82rem;color:var(--ink-2); }
.library-toolbar input { flex:1;min-width:180px;min-height:44px;padding:8px 12px;border:0;border-radius:10px;background:var(--ground);color:var(--ink);font:inherit; }
.library-toolbar input:focus-visible { outline:2px solid var(--brass);outline-offset:1px; }
.library-toolbar output { font:400 .7rem var(--mono);color:var(--ink-2); }
#facet-clear { min-height:36px;padding:6px 12px;border-radius:999px;font-size:.8rem; }
.daily-shortcuts { display:flex;flex-wrap:wrap;align-items:center;gap:0 18px;padding:8px 2px 0; }
.daily-shortcuts .eyebrow { font-size:.85rem; }
.daily-shortcuts a { min-height:44px;display:inline-flex;align-items:center;color:var(--ink-2);font-size:.84rem; }
.daily-shortcuts a:hover { color:var(--ink); }
.cabinet { margin:16px 0 2px;padding:14px 16px 12px;border-radius:var(--card-radius);border:1px solid color-mix(in srgb,var(--brass) 40%,transparent);background:linear-gradient(120deg,color-mix(in srgb,var(--brass) 9%,transparent),transparent 60%),var(--surface); }
.cabinet h2,.facet-category h2 { display:flex;align-items:center;gap:10px;margin:0 0 10px;font:400 1rem/1 var(--display);font-variant-caps:all-small-caps;letter-spacing:.14em;color:var(--brass-ink); }
.cabinet h2::before,.facet-category h2::before { content:"";width:3px;height:1em;border-radius:2px;background:var(--brass); }
.cabinet ul { list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:4px 18px; }
.cabinet-item { display:grid;grid-template-columns:40px minmax(0,1fr) auto;align-items:center;gap:12px;min-height:54px;padding:6px 8px;border-radius:12px;text-decoration:none;color:var(--ink);transition:background .15s; }
.cabinet-item:hover { background:var(--raised); }
.cabinet-item img { width:40px;height:40px;border-radius:10px;object-fit:cover;box-shadow:0 4px 10px -3px color-mix(in srgb,var(--accent) 50%,transparent); }
.cabinet-item strong { display:block;font-weight:400;line-height:1.2; }
.cabinet-item small { display:block;color:var(--ink-2);font-size:.8rem;margin-top:2px; }
.cabinet-item em { font-style:normal;color:var(--brass-ink);font-size:.9rem; }
.facet-category { padding-top:22px; }
.facet-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(178px,1fr));gap:14px; }
.facet-card { position:relative;border-radius:var(--card-radius);background:var(--surface);border:1px solid color-mix(in srgb,var(--accent) 34%,var(--hair));transition:transform .18s var(--ease),border-color .18s,background .18s; }
.facet-card:hover { transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 72%,transparent);background:var(--raised); }
.facet-card:active { transform:scale(.985); }
.facet-tile { display:grid;gap:12px;align-content:start;min-height:170px;padding:16px 16px 14px;border-radius:inherit;text-decoration:none;color:var(--ink); }
.facet-art { display:block;width:64px;height:64px;border-radius:15px;overflow:hidden;box-shadow:0 7px 16px -5px color-mix(in srgb,var(--accent) 55%,transparent),inset 0 0 0 1px rgba(255,255,255,.16);transition:transform .22s var(--ease); }
.facet-card:hover .facet-art { transform:translateY(-2px) scale(1.04); }
.facet-art img,.facet-art .facet-hex { width:100%;height:100%;object-fit:cover;display:block; }
.facet-text strong { display:block;font:400 1.15rem/1.2 var(--display);padding-right:28px; }
.facet-text small { display:block;margin-top:5px;font-size:.82rem;line-height:1.4;color:var(--ink-2); }
.facet-fav { position:absolute;top:8px;right:8px;width:40px;height:40px;border:0;border-radius:50%;background:transparent;color:var(--ink-3);font-size:1.3rem;line-height:1;cursor:pointer;opacity:.5;transition:opacity .15s,transform .15s var(--ease),color .15s; }
.facet-card:hover .facet-fav,.facet-fav:focus-visible,.facet-fav[aria-pressed="true"] { opacity:1; }
.facet-fav[aria-pressed="true"] { color:var(--brass-ink);text-shadow:0 0 12px color-mix(in srgb,var(--brass) 60%,transparent); }
.facet-fav:hover { transform:scale(1.18); }
.facet-fav:active { transform:scale(.88); }
.facet-tile:focus-visible,.facet-row:focus-visible,.cabinet-item:focus-visible { outline:3px solid var(--brass-ink);outline-offset:3px; }
.facet-fav:focus-visible { outline:2px solid var(--brass-ink);outline-offset:1px; }
#facet-library:not(.settled) .facet-card { animation:rise .55s var(--ease) both;animation-delay:calc(var(--i,0) * 22ms); }
@keyframes rise { from { opacity:0;transform:translateY(14px); } }
#facet-empty { margin-top:18px;color:var(--ink-2); }
.library-credit { color:var(--ink-3);font-size:var(--t-sm);margin-top:28px; }

/* ── a game page ──────────────────────────────────────────────────────────────────────────────── */
.game-heading { display:flex;align-items:center;justify-content:space-between;gap:18px;padding-block:14px 16px; }
.game-title { display:grid;grid-template-columns:auto minmax(0,1fr);grid-template-rows:auto auto auto;column-gap:16px;row-gap:2px;align-items:center;min-width:0; }
.game-title .game-art { grid-row:1 / span 3;width:56px;height:56px;border-radius:14px;object-fit:cover;box-shadow:0 7px 16px -5px color-mix(in srgb,var(--accent) 55%,transparent),inset 0 0 0 1px rgba(255,255,255,.16); }
.game-title>.link { font-size:.78rem;min-height:0;color:var(--ink-2); }
.game-title .eyebrow { margin:0;font-size:.85rem; }
.game-title h1 { font-size:clamp(1.9rem,3vw,2.6rem);line-height:1.1;margin:0; }
.game-modes { display:inline-flex;flex:none;gap:2px;padding:3px;border-radius:999px;border:1px solid var(--rule);background:var(--surface); }
.game-modes .btn { border:0;border-radius:999px;min-height:38px;font-size:.8rem;padding-inline:14px;background:transparent; }
.game-modes .btn:hover { background:var(--raised); }
.game-modes [aria-current="page"] { background:var(--ink);color:var(--ground); }
.play-layout { display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:24px;align-items:start; }
.play-panel { min-width:0;padding:16px;border-radius:var(--panel-radius);border:1px solid color-mix(in srgb,var(--accent) 30%,var(--hair));background:radial-gradient(120% 90% at 0% 0%,color-mix(in srgb,var(--accent) 15%,transparent),transparent 60%),var(--surface); }
.game-metrics { display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-items:start;padding-bottom:10px;border-bottom:1px solid var(--rule); }
.game-metrics span { display:block;font:400 .75rem/1.5 var(--mono);color:var(--ink-2);text-transform:uppercase;letter-spacing:.08em; }
.game-metrics strong { display:block;font:400 clamp(1.05rem,1.65vw,1.3rem)/1.55 var(--mono);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;transform-origin:left center; }
.game-actions { display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 0; }
.game-actions .btn { font-size:.8rem;padding:10px 12px;border-radius:10px; }
.game-actions .btn[aria-pressed="true"] { border-color:var(--brass);background:var(--brass);color:var(--on-brass); }
.game-outcome { margin:10px 0 8px;font-size:.9rem;line-height:1.4;min-height:1.4em;color:color-mix(in srgb,var(--accent) 55%,var(--ink)); }
.board-scroll { max-width:100%;overflow-x:auto;padding:4px 4px 8px;scrollbar-width:thin;scrollbar-color:var(--brass) var(--surface); }
.game-board { position:relative;display:grid;gap:8px;width:100%;aspect-ratio:1;margin-inline:auto;outline-offset:3px; }
.game-board:focus-visible { outline:2px solid var(--accent); }
.game-board button:focus-visible { outline:3px solid var(--brass-ink);outline-offset:1px;z-index:1; }
.game-board.celebrate { animation:won-glow 1.6s var(--ease) both; }
.game-board.celebrate::after { content:"";position:absolute;inset:-6px;border-radius:14px;pointer-events:none;z-index:2;background:linear-gradient(105deg,transparent 35%,rgba(255,255,255,.28) 50%,transparent 65%);background-size:260% 100%;animation:sheen 1.4s var(--ease) both; }
@keyframes won-glow { 25% { box-shadow:0 0 0 2px var(--accent),0 0 48px color-mix(in srgb,var(--accent) 55%,transparent); } }
@keyframes sheen { from { background-position:120% 0; } to { background-position:-40% 0; } }
.direction-pad { display:flex;justify-content:center;gap:6px;margin-top:8px; }
.direction-pad .btn { justify-content:center;min-width:48px;min-height:44px;padding:8px 12px;font-size:1.3rem;border-radius:10px; }
.game-sidebar { min-width:0; }
.game-sidebar .game-guide { border-top:0;margin:0;padding:0; }
.game-sidebar .game-guide summary { font-family:var(--mono);font-size:.7rem;letter-spacing:.07em;text-transform:uppercase;color:var(--brass-ink);padding:10px 0;cursor:pointer;min-height:44px; }
.game-guide h2 { font-size:1.45rem;line-height:1.2;margin:6px 0 10px; }
.game-guide p:not(.eyebrow) { color:var(--ink-2);font-size:.9rem;line-height:1.65; }
.game-guide .input-hint { margin-top:12px;font-size:.8rem; }
.challenge-note { border-top:1px solid var(--rule);padding-top:14px;margin-top:18px; }
.challenge-note h3 { margin:8px 0;font-size:1.15rem; }
.challenge-note p { font-size:var(--t-sm);color:var(--ink-2);margin-bottom:10px; }
.game-notice { margin-top:14px;color:var(--ink-2);font-size:.79rem; }
.game-sidebar details { border-top:1px solid var(--rule);margin-top:12px;padding-top:6px; }
.game-sidebar summary { cursor:pointer;min-height:44px;padding-block:10px;font-size:.93rem; }
.game-sidebar details p { color:var(--ink-2);margin:10px 0;font-size:.85rem;line-height:1.6; }
.game-sidebar code { overflow-wrap:anywhere;font-size:.75rem; }
.import-label { position:relative;overflow:hidden;cursor:pointer; }
.import-label input { position:absolute;inset:0;opacity:0;cursor:pointer;width:100%; }
.import-label:focus-within { outline:2px solid var(--brass-ink);outline-offset:3px; }
#share-fallback { display:block;font-size:var(--t-sm);margin-top:12px; }
#share-url { width:100%;background:var(--ground);color:var(--ink);border:1px solid var(--rule);padding:12px;font:400 .7rem var(--mono); }
.cloud-panel label { display:block;margin-top:12px;font-size:var(--t-sm); }
.cloud-panel input,.room-panel input { display:block;width:100%;min-height:44px;background:var(--ground);color:var(--ink);border:1px solid var(--rule);padding:10px;font:inherit; }
.cloud-actions { display:flex;gap:8px;flex-wrap:wrap;margin-top:12px; }
.room-panel form { display:flex;gap:10px;align-items:end;margin-top:14px; }
.room-panel label { flex:1;min-width:0;font-size:var(--t-sm); }
.room-panel [data-room-input] { letter-spacing:.3em;font-family:var(--mono);text-transform:uppercase; }
.room-panel [data-room-invite] { margin-top:12px;font-size:.7rem; }
.engine-stats { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid var(--rule); }
.engine-stats dt { font:400 .7rem/1.5 var(--mono);text-transform:uppercase;color:var(--ink-2); }
.engine-stats dd { margin:3px 0 0;color:var(--ink);font-size:1rem;overflow-wrap:anywhere; }
.engine-log { margin-top:16px;color:var(--ink-2);font-size:var(--t-sm);max-height:220px;overflow:auto;padding-right:5px; }
.engine-log p { margin-top:8px; }
.engine-log .engine-note { color:var(--ink-3);font-size:.8rem;border-top:1px solid var(--rule);padding-top:12px; }
.engine-controls { display:flex;flex-wrap:wrap;gap:6px;margin-top:10px;padding-top:10px;border-top:1px solid var(--rule); }
.engine-controls .btn { min-height:44px;font-size:.8rem;padding:9px 11px;border-radius:10px; }
.word-entry { display:flex;gap:10px;align-items:end;margin-top:10px; }
.word-entry label { flex:1;min-width:0;font-size:var(--t-sm); }
.word-entry input { display:block;width:100%;min-height:44px;padding:10px;background:var(--ground);color:var(--ink);border:1px solid var(--rule);border-radius:10px;font:400 1.3rem var(--mono);text-transform:uppercase;letter-spacing:.15em; }
.native-callout { display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:26px;padding-block:20px;border-top:1px solid var(--rule); }
.native-callout .eyebrow { font-size:.85rem; }
.native-callout h2 { font-size:1.5rem;margin:5px 0; }
.native-callout p:not(.eyebrow) { color:var(--ink-2);font-size:.9rem; }
.native-callout>.btn { flex:none;font-size:.85rem;border-radius:999px; }

/* ── the three portable boards ───────────────────────────────────────────────────────────────── */
.game-board[data-game="2048"] { grid-template-columns:repeat(4,1fr);touch-action:none;max-width:360px;padding:8px;border-radius:14px;background:color-mix(in srgb,var(--accent) 14%,var(--ground)); }
.game-board[data-game="lights-out"] { grid-template-columns:repeat(5,1fr);max-width:360px;padding:8px;border-radius:14px;background:color-mix(in srgb,var(--accent) 8%,var(--ground)); }
.game-board[data-game="minesweeper"] { gap:3px;min-width:var(--mine-width,396px);aspect-ratio:auto;max-width:440px;padding:6px;border-radius:12px;background:color-mix(in srgb,var(--accent) 10%,var(--ground)); }
.tile { display:grid;place-items:center;border:1px solid var(--rule);border-radius:8px;background:var(--raised);color:var(--ink);font:400 clamp(1.5rem,4vw,3rem)/1 var(--display);aspect-ratio:1;position:relative; }
.game-board[data-game="2048"] .tile { border:0;background:color-mix(in srgb,var(--ground) 70%,transparent); }
.tile[data-value="2"] { background:#5D506D;color:#FAF3E7; }
.tile[data-value="4"] { background:#79638E;color:#FFF8E9; }
.tile[data-value="8"] { background:#AA83B5;color:#1B1224; }
.tile[data-value="16"] { background:#C7A3C1;color:#1B1224; }
.tile[data-value="32"] { background:#B69A76;color:#17130A; }
.tile[data-value="64"] { background:#D9B978;color:#17130A; }
.tile.high { background:#ECD8AE;color:#17130A;font-size:clamp(1rem,2.8vw,2rem);box-shadow:inset 0 0 0 3px #9B783C,0 0 18px #D9B97855; }
.tile:not([data-value="0"]) { box-shadow:0 2px 0 rgba(0,0,0,.25); }
.tile.spawn { animation:spawn .22s var(--ease) both .11s; }
.tile.merged { animation:merge .28s var(--ease) both .1s; }
@keyframes spawn { from { transform:scale(.4);opacity:0; } }
@keyframes merge { 50% { transform:scale(1.16); } }
.light-cell { min-width:44px;min-height:44px;cursor:pointer;border-radius:10px; }
.light-cell.lit { background:#BCA5E2;color:#241933;box-shadow:inset 0 0 18px #F2E6FF66,0 0 14px #A987CE55; }
.light-cell::after { content:"";width:20%;height:20%;border-radius:50%;border:1px solid currentColor;opacity:.55; }
.light-cell.lit::after { background:currentColor; }
.light-cell.flip { animation:light-flip .38s var(--ease) both; }
@keyframes light-flip { from { transform:rotateY(90deg); } }
.mine-cell { min-width:44px;min-height:44px;cursor:pointer;font:500 1rem var(--mono);border-radius:6px; }
.mine-cell.revealed { background:var(--ground);border-color:var(--hair); }
.mine-cell.flagged { color:var(--brass-ink); }
.mine-cell.mine { background:#823D56;color:#FFF; }
.mine-cell[data-count="1"] { color:var(--ai-ink); }
.mine-cell[data-count="2"] { color:var(--minecraft-ink); }
.mine-cell[data-count="3"] { color:var(--desktop-ink); }
.mine-cell.revealing { animation:uncover .32s var(--ease) both;animation-delay:var(--delay,0ms); }
@keyframes uncover { from { background-color:var(--raised);color:transparent;transform:scale(.92); } }
.game-board.boom { animation:shake .5s var(--ease) both; }
@keyframes shake { 20% { transform:translateX(-5px); } 40% { transform:translateX(5px); } 60% { transform:translateX(-3px); } 80% { transform:translateX(3px); } }

/* ── shared controllers: native-rule projections, without markup in the engines ─────────────── */
.extended-board { aspect-ratio:auto;gap:3px;width:100%; }
.extended-board.engine-grid { display:grid;grid-template-columns:repeat(var(--columns),minmax(var(--cell-min,40px),1fr));min-width:calc(var(--columns) * var(--cell-min,40px) + (var(--columns) - 1) * 3px); }
.engine-cell { display:grid;place-items:center;min-width:0;aspect-ratio:1;border:1px solid var(--rule);border-radius:5px;background:var(--raised);color:var(--ink);font:400 clamp(1.1rem,2.5vw,2rem)/1 var(--display);padding:2px; }
button.engine-cell { cursor:pointer;min-height:40px; }
.engine-cell.selected,.playing-card.selected { outline:3px solid var(--accent);outline-offset:-3px;box-shadow:inset 0 0 0 4px var(--ground); }
.engine-cell:disabled { cursor:default; }
.engine-cell.tone-empty { color:var(--ink-3);background:var(--ground); }
.engine-cell.tone-gold { color:var(--brass-ink); }
.engine-cell.tone-purple { background:#827097;color:#FFF4E2; }
.engine-cell.tone-green { background:#4D895C;color:#FFF; }
.engine-cell.tone-red { color:#EA7C86; }
.engine-cell.tone-notes { font:400 .7rem/1.5 var(--mono);white-space:pre-wrap;color:var(--ink-2); }
.engine-cell.tone-given { color:var(--ink);background:var(--surface);font-weight:bold; }
.engine-cell.tone-white,.engine-cell.tone-light { color:#FFF4DE;text-shadow:0 1px 2px #000; }
.engine-cell.tone-black,.engine-cell.tone-dark { color:#161A1B;text-shadow:0 1px 1px #EEDDC388; }
.engine-cell.tone-light-square { background:#D3C1A2;border-color:#C8B99D; }
.engine-cell.tone-dark-square { background:#526F65;border-color:#476357; }
.engine-cell.changed { animation:settle .28s var(--ease) both; }
@keyframes settle { from { transform:scale(.78);opacity:.35; } 60% { transform:scale(1.06);opacity:1; } }
[data-game="chess"] .engine-cell { font-family:Georgia,serif;font-size:clamp(2rem,4vw,3.5rem); }
[data-game="chess"] .tone-white { color:#FFFFF4;text-shadow:0 1px 1px #000,1px 0 1px #000,-1px 0 1px #000; }
[data-game="chess"] .tone-black { color:#151718;text-shadow:0 1px 1px #E0D6C7; }
[data-game="checkers"] .tone-light { background:#6B5140;color:#E8D4B0;border-color:#7B6552; }
[data-game="checkers"] .tone-dark { background:#6B5140;color:#17181B;border-color:#7B6552;text-shadow:0 1px 2px #E0C28A; }
[data-game="chess"] .engine-cell.changed,[data-game="checkers"] .engine-cell.changed,[data-game="sliding-15"] .engine-cell.changed { animation:none; }
[data-game="reversi"] .engine-cell { background:#3D715D;font-size:2.5rem; }
[data-game="reversi"] .engine-cell.changed { animation:none; }
[data-game="reversi"] .engine-cell.placed { animation:settle .3s var(--ease) both; }
[data-game="reversi"] .engine-cell.flipped { animation:flip-disc .5s var(--ease) both; }
@keyframes flip-disc { 0% { transform:rotateY(0);color:var(--from); } 49% { transform:rotateY(90deg);color:var(--from); } 51% { transform:rotateY(-90deg); } 100% { transform:rotateY(0); } }
[data-game="gomoku"] .engine-cell { background:#B89A70;border-color:#8C734F;font-size:1.9rem; }
[data-game="gomoku"] .tone-empty { color:#705733; }
[data-game="connect-four"] .engine-cell { background:#304F79;border-radius:50%;font-size:2.6rem; }
[data-game="connect-four"] .tone-red { color:#F17575; }
[data-game="connect-four"] .tone-yellow { color:#ECD27A; }
[data-game="connect-four"] .engine-cell.changed { animation:drop .5s cubic-bezier(.3,.8,.35,1.12) both; }
@keyframes drop { from { transform:translateY(calc((var(--drop,0) + 1) * -108%)); } }
[data-game="sea-battle"] .engine-cell { background:#23475D;color:#94CBD6;font-size:1.35rem; }
[data-game="sea-battle"] .tone-hit { background:#783C40;color:#FFE3BE; }
[data-game="sea-battle"] .tone-ship { background:#475664;color:#E3DDCE; }
[data-game="sea-battle"] .engine-cell.hit { animation:burst .55s var(--ease) both; }
[data-game="sea-battle"] .engine-cell.miss { animation:ripple .6s ease-out both; }
@keyframes burst { 0% { transform:scale(.6);box-shadow:0 0 0 0 #F0846088; } 60% { transform:scale(1.14);box-shadow:0 0 0 12px transparent; } }
@keyframes ripple { from { box-shadow:0 0 0 0 #94CBD699; } to { box-shadow:0 0 0 14px transparent; } }
[data-game="snake"] { gap:1px;max-width:560px;margin:auto; }
[data-game="snake"] .engine-cell { border:0;font:400 1.1rem/1 var(--mono);border-radius:2px; }
[data-game="snake"] .tone-empty { background:#102218; }
[data-game="snake"] .tone-red { background:#102218;color:#F09180;animation:apple 1.3s ease-in-out infinite; }
[data-game="snake"] .engine-cell.head { box-shadow:0 0 10px #8FE38A,inset 0 0 0 1px #DFF5C8;z-index:1; }
@keyframes apple { 50% { transform:scale(1.2); } }
[data-game="sudoku"] .engine-cell:nth-child(3n) { border-right:2px solid var(--brass); }
[data-game="sudoku"] .engine-cell:nth-child(n+19):nth-child(-n+27),[data-game="sudoku"] .engine-cell:nth-child(n+46):nth-child(-n+54) { border-bottom:2px solid var(--brass); }
.column-clue,.row-clue { display:flex;align-items:center;justify-content:center;font:400 .72rem/1.45 var(--mono);color:var(--brass-ink); }
.column-clue { white-space:pre-line;text-align:center;align-items:end;padding-bottom:8px; }
.row-clue { padding-right:10px;white-space:nowrap; }
.kind-word { max-width:380px;margin:auto;gap:7px; }
.kind-word .engine-cell { font-family:var(--mono);font-size:1.6rem;border-radius:6px; }
.kind-word .tone-correct { background:#487655;color:#FFF; }
.kind-word .tone-present { background:#B59250;color:#151812; }
.kind-word .tone-absent { background:#3A444A;color:#FFF; }
.kind-word .engine-cell.changed:not(.tone-empty) { animation:reveal-letter .5s var(--ease) both;animation-delay:calc(var(--i,0) * 110ms); }
@keyframes reveal-letter { from { transform:rotateX(90deg); } }
.engine-piles { display:flex;align-items:start;gap:12px;min-width:max-content;padding:4px 3px 20px; }
.card-pile { width:88px;flex:none;padding:0; }
.card-pile h3 { min-height:36px;font:400 .72rem/1.5 var(--mono);color:var(--ink-2);margin-bottom:12px; }
.card-stack { display:flex;flex-direction:column;align-items:stretch; }
.playing-card { position:relative;display:flex;align-items:start;justify-content:start;width:88px;min-height:122px;padding:8px;border-radius:7px;border:1px solid #A89983;background:#F1E6D2;color:#1D2728;font:400 1.1rem/1.3 var(--display);text-align:left;box-shadow:0 1px 2px rgba(0,0,0,.25); }
button.playing-card { cursor:pointer; }
.playing-card.tone-red { color:#A22E3C; }
.playing-card.tone-back { background:repeating-linear-gradient(45deg,#403951 0 4px,#4A4260 4px 8px);color:#CFB894;border:3px solid #D7C6A4; }
.playing-card.changed { animation:settle .3s var(--ease) both; }
.empty-pile { display:grid;place-items:center;min-height:122px;border:1px dashed var(--rule);border-radius:7px;color:var(--ink-3);font-size:.85rem; }
[data-game="crazy-8"].engine-piles { display:grid;grid-template-columns:1fr;min-width:0;gap:24px; }
[data-game="crazy-8"] .card-pile { width:auto; }
[data-game="crazy-8"] .card-stack { flex-direction:row;flex-wrap:wrap;gap:7px; }
[data-game="crazy-8"] .card-stack .playing-card+.playing-card { margin-top:0; }
[data-game="crazy-8"] .playing-card { width:68px;min-height:96px; }
[data-game="brick-bench"] .engine-cell { font-size:1.15rem;border-radius:50%;border:2px solid #6E7481;box-shadow:inset 0 1px 2px #FFFFFF33; }
[data-game="brick-bench"] .tone-classicRed { background:#BA3E43;color:#D96365; }[data-game="brick-bench"] .tone-brightBlue { background:#3478B8;color:#71ADE0; }[data-game="brick-bench"] .tone-brightYellow { background:#D9B83D;color:#F0D965; }[data-game="brick-bench"] .tone-orange { background:#C67B35;color:#EBA568; }[data-game="brick-bench"] .tone-tan { background:#C6AD86;color:#E1CA9F; }[data-game="brick-bench"] .tone-darkGreen { background:#3D6750;color:#71927C; }[data-game="brick-bench"] .tone-black { background:#22272D;color:#59616B; }[data-game="brick-bench"] .tone-white { background:#E5E5DC;color:#ADB7B9; }[data-game="brick-bench"] .tone-lightBluishGray { background:#AAB7C1;color:#D7E1E6; }[data-game="brick-bench"] .tone-darkBluishGray { background:#5A6A78;color:#8C9FAF; }[data-game="brick-bench"] .tone-reddishBrown { background:#765142;color:#AC7D69; }
.hex-board { display:block;min-width:480px; }
.hex-board svg { display:block;width:100%;height:auto;background:radial-gradient(ellipse,#27485A,#152632 75%);border-radius:14px; }
.hex-action { cursor:pointer; }
.hex-action:focus { outline:none;filter:drop-shadow(0 0 6px #FFE7A2); }
.hex-action:focus>polygon,.hex-action:focus>circle,.hex-action:hover>polygon { stroke:#FFF0B8;stroke-width:5px; }
.hex-arrive { transform-box:fill-box;transform-origin:center;animation:settle .45s var(--ease) both; }
.hex-road-arrive { stroke-dasharray:240;stroke-dashoffset:240;animation:draw-road .5s var(--ease) forwards; }
@keyframes draw-road { to { stroke-dashoffset:0; } }
.hex-accessible { margin-top:12px; }
.hex-accessible summary { min-height:44px;cursor:pointer;padding-block:12px; }
.game-board:is([data-game="chess"],[data-game="checkers"],[data-game="reversi"]) { max-width:400px;gap:2px;padding:5px;background:#493F35;border-radius:10px;box-shadow:0 5px 16px #0003; }
.game-board[data-game="chess"] .engine-cell { border-radius:0;font-size:clamp(1.8rem,3vw,2.6rem); }
.game-board[data-game="checkers"] .engine-cell,.game-board[data-game="reversi"] .engine-cell { border-radius:0;font-size:2rem; }
.game-board[data-game="sudoku"] { max-width:416px;gap:1px;padding:5px;background:var(--brass);border-radius:8px; }
.game-board[data-game="sudoku"] .engine-cell { border-radius:0;font-size:1.4rem; }
.game-board[data-game="sudoku"] .tone-notes { font-size:.7rem;line-height:1.2; }
.game-board[data-game="sliding-15"] { max-width:360px;gap:8px;padding:10px;background:var(--ground);border:1px solid var(--rule);border-radius:14px; }
.game-board[data-game="sliding-15"] .engine-cell { background:var(--surface);border-radius:8px;box-shadow:inset 0 -3px color-mix(in srgb,var(--brass) 30%,transparent); }
.game-board[data-game="sliding-15"] .tone-empty { background:transparent;border-color:transparent;box-shadow:none; }
.game-board[data-game="connect-four"] { max-width:420px;padding:9px;gap:5px;background:#243B5B;border-radius:14px;overflow:hidden; }
.game-board[data-game="connect-four"] .engine-cell { border:1px solid #1D3049;box-shadow:inset 0 3px 5px #0004;font-size:2.4rem; }
.game-board[data-game="sea-battle"] { max-width:460px;padding:5px;background:#142F40;border-radius:10px; }
.game-board[data-game="gomoku"] { gap:1px;padding:6px;background:#8D724B;border-radius:8px; }
.game-board[data-game="gomoku"] .engine-cell { border-radius:0; }
.game-board[data-game="wordle"] { max-width:290px;gap:5px; }
.game-board[data-game="snake"] { max-width:360px;padding:8px;background:#102218;border:1px solid #396246;border-radius:12px; }
.game-board.engine-piles { padding:14px 12px 20px;background:radial-gradient(ellipse at 50% 0,#2E5C4A,#193B32);border:1px solid #456455;border-radius:14px; }
.engine-piles .card-pile h3 { color:#E3DCCB; }
.engine-piles .empty-pile { color:#C3D1C1;border-color:#9BAB9577; }
.card-stack .playing-card+.playing-card { margin-top:-76px; }
.playing-card.selected { outline:3px solid #F4D38B;outline-offset:1px;box-shadow:0 0 0 5px #1D302A; }
.game-board[data-game="brick-bench"] { padding:10px;background:var(--ground);border:1px solid var(--rule);border-radius:14px; }
.game-page:has(.kind-hex) .play-layout { grid-template-columns:minmax(0,1fr) 250px; }
.game-page:has(.kind-cards) .play-layout { grid-template-columns:minmax(0,1fr); }
.game-page:has(.kind-cards) .game-sidebar { display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 24px;align-items:start; }

/* ── the cube ─────────────────────────────────────────────────────────────────────────────────── */
.game-board.cube-board { display:block;aspect-ratio:auto;max-width:520px;width:100%;gap:0; }
.game-board.cube-board:focus-visible { outline:none; }
.game-board.cube-board:focus-visible .cube-stage { box-shadow:inset 0 0 0 2px var(--accent); }
.cube-stage { --s:48px;position:relative;width:100%;aspect-ratio:1;max-height:72vh;perspective:calc(var(--s) * 15);perspective-origin:50% 46%;touch-action:none;cursor:grab;user-select:none;-webkit-user-select:none;border-radius:var(--panel-radius);background:radial-gradient(68% 68% at 50% 44%,color-mix(in srgb,var(--accent) 24%,transparent),transparent 72%);transition:box-shadow .4s; }
.cube-stage.grabbing { cursor:grabbing; }
.cube-stage.solved { animation:solved-glow 2.6s ease-in-out infinite; }
@keyframes solved-glow { 50% { box-shadow:0 0 0 2px var(--brass),0 0 64px color-mix(in srgb,var(--brass) 45%,transparent); } }
.cube-space { position:absolute;left:50%;top:50%;width:0;height:0;transform-style:preserve-3d; }
.cube { position:absolute;left:0;top:0;width:0;height:0;transform-style:preserve-3d;transition:transform .09s linear; }
.cube-pivot,.cubie { position:absolute;left:0;top:0;width:0;height:0;transform-style:preserve-3d; }
.cube-face { position:absolute;left:calc(var(--s) / -2);top:calc(var(--s) / -2);width:var(--s);height:var(--s);border-radius:7%;background-color:#1A1A1C;background-image:linear-gradient(rgba(0,0,0,var(--dim,0)),rgba(0,0,0,var(--dim,0)));backface-visibility:hidden; }
.cube-face.sticker { background-color:var(--sticker);border-radius:13%;box-shadow:inset 0 0 0 calc(var(--s) * .075) #1A1A1C; }
.cube-face.sticker::after { content:"";position:absolute;inset:calc(var(--s) * .075);border-radius:10%;background:linear-gradient(135deg,rgba(255,255,255,.24),transparent 58%); }
.cube-face.tone-red { --sticker:#C8292E; }.cube-face.tone-orange { --sticker:#F28521; }.cube-face.tone-white { --sticker:#F5F5F5; }.cube-face.tone-yellow { --sticker:#FAD92E; }.cube-face.tone-green { --sticker:#29A04D; }.cube-face.tone-blue { --sticker:#1F5CC7; }
.cube-hint { margin:8px 0 0;text-align:center;color:var(--ink-3);font-size:.82rem; }
.cube-flat { margin-top:10px;border-top:1px solid var(--rule); }
.cube-flat summary { cursor:pointer;min-height:44px;display:flex;align-items:center;color:var(--ink-2);font-size:.9rem; }
.cube-net { display:grid;grid-template-columns:repeat(3,minmax(88px,1fr));gap:12px 10px;max-width:420px;padding-bottom:8px; }
.cube-face-panel h3 { font:400 .75rem var(--mono);color:var(--brass-ink);margin-bottom:5px; }
.cube-stickers { display:grid;grid-template-columns:repeat(3,1fr);gap:3px;background:#15191B;padding:4px;border-radius:6px; }
.cube-stickers .engine-cell { border:0;border-radius:3px;min-height:0; }
.cube-stickers .tone-white { background:#F5F0DB; }.cube-stickers .tone-yellow { background:#ECCD55; }.cube-stickers .tone-red { background:#C34649; }.cube-stickers .tone-orange { background:#DB9450; }.cube-stickers .tone-blue { background:#477CB5; }.cube-stickers .tone-green { background:#4F9868; }
.engine-controls.kind-cube { display:grid;grid-template-columns:repeat(6,minmax(0,1fr));grid-template-rows:repeat(3,auto);grid-auto-flow:column;gap:6px;max-width:520px; }
.engine-controls.kind-cube .btn { justify-content:center;font-family:var(--mono);font-size:.85rem;padding:8px 4px;min-height:40px; }
.engine-controls.kind-cube .btn:last-child { grid-column:1 / -1;grid-row:4;font-family:var(--serif);margin-top:4px; }

/* ── widths ───────────────────────────────────────────────────────────────────────────────────── */
@media(min-width:1400px) {
 .game-page:has(.kind-cards) .play-layout { grid-template-columns:minmax(0,1fr) 250px; }
 .game-page:has(.kind-cards) .game-sidebar { display:block; }
}
@media(max-width:1100px) {
 .play-layout { grid-template-columns:minmax(0,1fr) 220px;gap:18px; }
}
@media(max-width:980px) {
 .prismet-app { grid-template-columns:1fr; }
 .app-index { border-right:0;border-bottom:1px solid var(--rule); }
 .app-index-disclosure { position:static;max-height:52vh;padding:0 16px; }
 .app-index-disclosure>summary { display:list-item;cursor:pointer;min-height:48px;color:var(--brass-ink);padding:11px 2px; }
 .app-index-disclosure nav { display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:0 12px;padding-bottom:20px; }
 .app-home-link { grid-column:1/-1; }
 .app-main { padding:16px 18px 28px; }
 .game-sidebar .game-guide { border-bottom:1px solid var(--rule); }
}
@media(max-width:760px) {
 .library-heading { flex-wrap:wrap;gap:12px; }
 .library-brand { gap:14px; }
 .library-brand h1 { font-size:2.1rem; }
 .iris { width:54px;height:54px; }
 .library-intro { flex-direction:column;align-items:flex-start;gap:4px; }
 .library-intro p { font-size:.9rem; }
 .library-toolbar { display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 10px;padding:10px 12px; }
 .library-toolbar label { font-size:.78rem; }
 .library-toolbar input { grid-row:2;grid-column:1/-1;min-width:0;width:100%; }
 .library-toolbar output { text-align:right;font-size:.7rem; }
 #facet-clear { grid-row:3;grid-column:1/-1;justify-self:start; }
 .daily-shortcuts { flex-wrap:nowrap;overflow-x:auto;scrollbar-width:thin;padding-bottom:3px;gap:0 16px; }
 .daily-shortcuts a { flex:none;font-size:.78rem; }
 .daily-shortcuts .eyebrow { display:none; }
 .cabinet ul { grid-template-columns:1fr; }
 .facet-grid { grid-template-columns:repeat(2,minmax(0,1fr));gap:10px; }
 .facet-tile { min-height:150px;padding:13px;gap:10px; }
 .facet-art { width:52px;height:52px;border-radius:12px; }
 .facet-text strong { font-size:1.05rem;padding-right:24px; }
 .facet-text small { font-size:.78rem; }
 .game-heading { flex-wrap:wrap;gap:10px;padding-block:12px 14px; }
 .game-title { width:100%; }
 .game-title h1 { font-size:1.9rem; }
 .game-modes { width:100%; }
 .game-modes .btn { flex:1;justify-content:center; }
 .play-layout,.game-page:has(.kind-hex) .play-layout { grid-template-columns:1fr;gap:16px; }
 .play-panel { padding:12px 10px;border-radius:16px; }
 .game-metrics { padding-bottom:8px; }
 .game-metrics strong { font-size:1.16rem; }
 .game-actions .btn { flex-grow:1;justify-content:center;font-size:.78rem;padding:9px 10px; }
 .game-sidebar { padding-top:0; }
 .game-page:has(.kind-cards) .game-sidebar { display:block; }
 .native-callout { flex-direction:column;align-items:flex-start;gap:10px; }
 .native-callout .eyebrow { display:none; }
 .engine-controls .btn { flex-grow:1;justify-content:center; }
 .play-panel:has([data-game="sudoku"]) .engine-controls { display:grid;grid-template-columns:repeat(5,minmax(0,1fr)); }
 .play-panel:has([data-game="sudoku"]) .engine-controls .btn:nth-child(n+11) { grid-column:span 2;font-size:.7rem; }
 .game-board { gap:6px; }
 .game-board[data-game="minesweeper"] { gap:3px; }
 .game-board[data-game="chess"] .engine-cell { font-size:2rem; }
 .game-board:is([data-game="chess"],[data-game="checkers"],[data-game="reversi"]) { grid-template-columns:repeat(8,minmax(0,1fr));min-width:0; }
 .game-board[data-game="sudoku"] { grid-template-columns:repeat(9,minmax(0,1fr));min-width:0; }
 .game-board[data-game="sudoku"] .engine-cell { min-height:0;font-size:1.25rem; }
 .game-board[data-game="sudoku"] .tone-notes { font-size:.7rem; }
 .hex-board { min-width:420px; }
 .cube-stage { max-height:none; }
 .engine-controls.kind-cube .btn { font-size:.8rem;padding:8px 2px; }
 .tool-entry { grid-template-columns:28px 1fr 24px;gap:12px; }
 .arcade-footer { padding-block:18px; }
 .arcade-intro { padding-top:28px; }
 .arcade-intro-bottom { flex-direction:column;align-items:start;gap:20px; }
}
@media(max-width:420px) {
 .app-main { padding-inline:12px; }
 .library-brand h1 { font-size:1.9rem; }
 .library-heading>.btn { font-size:.79rem;min-height:44px; }
 .game-title .eyebrow { font-size:.78rem;letter-spacing:.06em; }
 .game-modes .btn { font-size:.75rem; }
 .game-metrics span { font-size:.75rem; }
 .engine-controls .btn { font-size:.75rem; }
 .facet-tile { min-height:140px; }
}
@media(prefers-reduced-motion:reduce) {
 .facet-card,.facet-art,.facet-fav,.cube,.cube-stage,.facet-row,.cabinet-item { transition:none; }
 .facet-card:hover,.facet-card:hover .facet-art { transform:none; }
 .iris i,#facet-library:not(.settled) .facet-card,.tile.spawn,.tile.merged,.light-cell.flip,.mine-cell.revealing,.game-board.boom,.game-board.celebrate,.game-board.celebrate::after,.engine-cell.changed,.engine-cell.placed,.engine-cell.flipped,.engine-cell.hit,.engine-cell.miss,.kind-word .engine-cell.changed,.playing-card.changed,.hex-arrive,.hex-road-arrive,.cube-stage.solved,[data-game="snake"] .tone-red,[data-game="connect-four"] .engine-cell.changed { animation:none; }
 .hex-road-arrive { stroke-dashoffset:0; }
}