/* Shared shell for the "Try it" puzzle pages. Same tokens as the homepage. */
@font-face{font-family:"Sora";font-weight:400;font-style:normal;font-display:swap;src:url(/assets/fonts/sora-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Sora";font-weight:600;font-style:normal;font-display:swap;src:url(/assets/fonts/sora-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"Sora";font-weight:700;font-style:normal;font-display:swap;src:url(/assets/fonts/sora-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Sora";font-weight:800;font-style:normal;font-display:swap;src:url(/assets/fonts/sora-latin-800-normal.woff2) format("woff2")}
@font-face{font-family:"Source Serif 4";font-weight:400;font-style:normal;font-display:swap;src:url(/assets/fonts/source-serif-4-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"Source Serif 4";font-weight:400;font-style:italic;font-display:swap;src:url(/assets/fonts/source-serif-4-latin-400-italic.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:500;font-style:normal;font-display:swap;src:url(/assets/fonts/ibm-plex-mono-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:600;font-style:normal;font-display:swap;src:url(/assets/fonts/ibm-plex-mono-latin-600-normal.woff2) format("woff2")}
:root{
  --night:#0B1A2C; --carriage:#12263D; --rail:#2A4362; --steam:#E9EEF4; --mist:#A9B8C9;
  --lamp:#F2B632; --signal:#8FD4DB; --ticket:#F4EEDF; --ink:#16222F;
  --display:"Sora",system-ui,-apple-system,"Segoe UI",sans-serif;
  --story:"Source Serif 4",Georgia,"Times New Roman",serif;
  --board:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --s-1:.8125rem; --s0:1rem; --s1:1.1875rem; --s3:2.125rem;
  --wrap:1120px;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--night);color:var(--steam);font:400 var(--s0)/1.6 var(--display);-webkit-font-smoothing:antialiased}
a{color:var(--lamp)}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--lamp);outline-offset:3px;border-radius:4px}
h1,h2,h3{text-wrap:balance;margin:0;line-height:1.1}
p{margin:0}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
@media (min-width:720px){.wrap{padding-left:max(32px,env(safe-area-inset-left,0px));padding-right:max(32px,env(safe-area-inset-right,0px))}}
.eyebrow{font:600 var(--s-1)/1 var(--board);letter-spacing:.14em;text-transform:uppercase;color:var(--signal)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;padding:.8em 1.25em;min-height:44px;border-radius:6px;font:700 var(--s0)/1 var(--display);text-decoration:none;transition:transform .15s,background .15s;border:0;cursor:pointer}
.btn-lamp{background:var(--lamp);color:var(--ink)}
.btn-lamp:hover{transform:translateY(-1px);background:#F7C653}
.btn-line{background:none;border:1.5px solid var(--rail);color:var(--steam)}
.btn-line:hover{border-color:var(--mist)}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* header + footer (same as homepage) */
.top{position:sticky;top:0;z-index:20;background:rgba(11,26,44,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--rail)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px}
.top .logo img{height:40px;width:auto;display:block}
.top nav{display:flex;gap:clamp(12px,3vw,28px);flex-wrap:wrap;justify-content:flex-end}
.top nav a{color:var(--mist);text-decoration:none;font-weight:600;font-size:var(--s-1);letter-spacing:.02em}
.top nav a:hover{color:var(--steam)}
@media (max-width:560px){.top nav a.opt{display:none}.top .logo img{height:32px}}
footer{border-top:1px solid var(--rail);padding-block:28px 40px;color:var(--mist);font-size:var(--s-1);margin-top:clamp(40px,6vw,72px)}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center}
footer img{height:28px;width:auto;opacity:.9;display:block}
footer nav{display:flex;gap:20px}
footer nav a{color:var(--mist);text-underline-offset:3px}

/* page */
.try-head{padding-block:clamp(24px,4vw,48px) 18px;display:grid;gap:10px}
.try-head h1{font-size:clamp(2rem,5vw,3.25rem);font-weight:800;letter-spacing:-.02em}
.try-head .lede{font:400 var(--s1)/1.5 var(--story);color:var(--mist);max-width:56ch}
.try-head .back{font:600 var(--s-1)/1 var(--board);letter-spacing:.06em;color:var(--mist);text-decoration:none}
.try-head .back:hover{color:var(--steam)}

.try-grid{display:grid;gap:clamp(20px,3vw,40px);align-items:start}
@media (min-width:900px){.try-grid{grid-template-columns:minmax(0,1fr) 340px}}
.try-grid>*{min-width:0}

/* level tabs: a row of platform signs */
.levels{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin-bottom:12px}
.levels button{appearance:none;border:1.5px solid var(--rail);background:var(--carriage);color:var(--mist);border-radius:8px;padding:10px 6px;min-height:52px;cursor:pointer;display:grid;gap:3px;justify-items:center;font:inherit}
.levels button b{font:700 var(--s0)/1 var(--display);color:var(--steam)}
.levels button span{font:600 .6875rem/1 var(--board);letter-spacing:.1em;text-transform:uppercase}
.levels button[aria-selected="true"]{background:var(--lamp);border-color:var(--lamp);color:var(--ink)}
.levels button[aria-selected="true"] b{color:var(--ink)}
.levels button .done{display:none}
.levels button.solved .done{display:inline}

/* the paper the puzzle is printed on */
.sheet{background:var(--ticket);color:var(--ink);border-radius:12px;padding:clamp(8px,2vw,18px);box-shadow:0 30px 60px -30px rgba(0,0,0,.85)}
.sheet-bar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:2px 4px 6px;font:600 .75rem/1.2 var(--board);letter-spacing:.08em;text-transform:uppercase;color:#6A5A3A}
.sheet-bar .clock{font-variant-numeric:tabular-nums;color:var(--ink)}
.board-svg{display:block;width:100%;height:auto;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;border-radius:6px}
.board-svg:focus{outline:none}
.board-svg:focus-visible{outline:2px solid var(--ink);outline-offset:2px}

.tools{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin-top:10px}
.tools button{appearance:none;border:1.5px solid var(--rail);background:var(--carriage);color:var(--steam);border-radius:6px;min-height:44px;font:600 var(--s-1)/1 var(--display);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px}
.tools button:hover{border-color:var(--mist)}
.tools button:disabled{opacity:.45;cursor:default}
.tools svg{width:16px;height:16px;flex:none}
.status{min-height:3em;margin-top:10px;font:500 var(--s-1)/1.45 var(--board);color:var(--mist)}
.status b{color:var(--steam)}

/* solved panel */
.solved-panel{display:none;margin-top:14px;border:1.5px solid var(--lamp);border-radius:12px;background:var(--carriage);padding:clamp(16px,3vw,24px);gap:12px}
.solved-panel.show{display:grid}
.solved-panel h2{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:800}
.solved-panel h2 em{font-style:normal;color:var(--lamp)}
.solved-panel p{color:var(--mist);max-width:56ch}
.solved-panel p b{color:var(--steam)}
.solved-panel .row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.solved-panel .fine{font-size:var(--s-1)}

/* side column */
.side{display:grid;gap:16px}
.card{border:1px solid var(--rail);border-radius:10px;background:var(--carriage);padding:16px 18px;display:grid;gap:10px}
.card h2{font-size:var(--s0);font-weight:700}
.card ol,.card ul{margin:0;padding-left:1.2em;display:grid;gap:6px;color:var(--mist)}
.card li b{color:var(--steam);font-weight:600}
.card p{color:var(--mist);font-size:.9375rem}
.card details summary{cursor:pointer;color:var(--steam);font-weight:600}
.card details p{margin-top:8px}
.book-card{grid-template-columns:84px minmax(0,1fr);align-items:center;gap:14px}
.book-card img{width:84px;height:auto;border-radius:2px 5px 5px 2px;box-shadow:0 10px 20px -8px rgba(0,0,0,.8);display:block}
.book-card .t{display:grid;gap:8px}
.book-card .t b{color:var(--steam)}
.book-card .t span{color:var(--mist);font-size:var(--s-1)}
.book-card .btn{padding:.6em 1em;min-height:40px;font-size:var(--s-1);justify-self:start}

/* fit the board on screen */
@media (max-width:640px){
  .try-head{padding-block:14px 10px;gap:6px}
  .try-head h1{font-size:1.6rem}
  .try-head .lede{display:none}
  .levels button{min-height:46px;padding:7px 4px}
}
@media (min-width:900px){
  .try-grid{grid-template-columns:minmax(0,min(640px,max(460px,calc(100vh - 420px)))) 340px;justify-content:center}
  .try-head{padding-block:28px 14px;width:min(100%,calc(min(640px,max(460px,calc(100vh - 420px))) + 340px + clamp(20px,3vw,40px)));margin-inline:auto}
}

/* number keypad (Ghost Stations) */
.keypad{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;margin-top:10px}
@media (min-width:560px){.keypad{grid-template-columns:repeat(12,minmax(0,1fr))}}
.keypad button{appearance:none;border:1.5px solid var(--rail);background:var(--ticket);color:var(--ink);border-radius:6px;min-height:44px;font:700 var(--s1)/1 var(--board);cursor:pointer;touch-action:manipulation}
.keypad button:hover{background:#FFF8E6}
.keypad.off button{opacity:.35;pointer-events:none}
.soon-chip{display:inline-flex;align-items:center;min-height:44px;padding:.75em 1.1em;border:1.5px dashed var(--lamp);border-radius:6px;color:var(--lamp);font:600 var(--s-1)/1 var(--board);letter-spacing:.1em;text-transform:uppercase}

/* Night Train: case head, case report, clues, legend */
.case-head{padding:2px 6px 10px;display:grid;gap:4px}
.case-head h2{font:800 clamp(1.15rem,3vw,1.5rem)/1.15 var(--story);color:var(--ink)}
.case-head p{font:italic 400 .9375rem/1.45 var(--story);color:#3A4654}
.report-h,.clues-h{font:600 .75rem/1 var(--board);letter-spacing:.14em;text-transform:uppercase;color:var(--signal);margin:14px 0 8px}
.report{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:5px;padding:0 2px 10px}
.report button{appearance:none;display:grid;grid-template-columns:24px minmax(0,1fr);grid-template-areas:"t w" "t r";align-items:center;column-gap:6px;text-align:left;border:1.5px solid #CFC5AE;background:#FFFDF7;color:var(--ink);border-radius:8px;padding:5px 7px;min-height:44px;cursor:pointer;font:inherit}
.report button[aria-pressed="true"]{border-color:#B07A10;background:#FBE9B8;box-shadow:0 0 0 2px #B07A10 inset}
.report button.clash{border-style:dashed;border-color:#B07A10}
.report button:disabled{cursor:default}
.report .tok{grid-area:t;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:#2B5D8A;color:#fff;font:800 .8125rem/1 var(--display)}
.report .tok.v{background:var(--ink)}
.report .who{grid-area:w;min-width:0;font-size:.78rem;letter-spacing:-.01em;font-weight:700;line-height:1.15;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.report .where{grid-area:r;font:600 .625rem/1.2 var(--board);letter-spacing:.03em;color:#7A6E58;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.report button.placed .where{color:#8A5A00}
.clues{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.clues button{appearance:none;width:100%;display:grid;grid-template-columns:26px minmax(0,1fr);gap:8px;align-items:start;text-align:left;background:none;border:0;border-radius:6px;padding:6px 4px;color:var(--steam);font:400 .9375rem/1.4 var(--display);cursor:pointer}
.clues button:hover{background:var(--carriage)}
.clues .no{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--lamp);color:var(--ink);font:700 .75rem/1 var(--display);margin-top:1px}
.clues button[aria-pressed="true"] .tx{text-decoration:line-through;color:var(--mist)}
.clues button[aria-pressed="true"] .no{background:var(--rail);color:var(--mist)}
.legend{display:flex;flex-wrap:wrap;gap:6px 12px}
.legend .lg{display:inline-flex;align-items:center;gap:6px;font-size:.8125rem;color:var(--mist)}
.legend .lg svg{width:26px;height:26px;background:#FDFBF6;border-radius:4px;padding:1px}
.legend .lg.ok{color:var(--steam);font-weight:600}

/* Killer Boarded: notebook, counter, ledger */
.notebook{background:#FFFDF7;border:1px solid #D8CEB6;border-radius:8px;padding:12px 14px;display:grid;gap:8px;color:var(--ink)}
.notebook .nb-top{display:flex;justify-content:space-between;align-items:center;gap:8px}
.notebook .nb-no{font:600 .75rem/1 var(--board);letter-spacing:.12em;text-transform:uppercase;color:#6A5A3A}
.notebook .nb-nav{display:flex;gap:6px}
.notebook .nb-nav button{appearance:none;width:44px;height:36px;border-radius:6px;border:1.5px solid #CFC5AE;background:#fff;color:var(--ink);font:700 1rem/1 var(--display);cursor:pointer}
.notebook .nb-nav button:disabled{opacity:.35;cursor:default}
.notebook .nb-quote{font:italic 400 1rem/1.45 var(--story);color:#3A4654}
.notebook .nb-box{border:2px solid var(--ink);border-radius:6px;padding:9px 11px;font:500 .9375rem/1.4 var(--display)}
.notebook .nb-cp{font:500 .8125rem/1.4 var(--display);color:#5A5040}
.notebook .nb-cp button{appearance:none;border:1px solid #B07A10;background:#FBE9B8;color:var(--ink);border-radius:5px;padding:4px 8px;min-height:32px;font:600 .75rem/1 var(--display);cursor:pointer}
.counter{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin:10px 2px 6px;color:var(--ink);font:600 .8125rem/1 var(--board);letter-spacing:.06em;text-transform:uppercase}
.counter b{font:800 1.75rem/1 var(--display);letter-spacing:-.01em;font-variant-numeric:tabular-nums;text-transform:none}
.ledger{max-height:min(62vh,560px);overflow:auto;border:1px solid #D8CEB6;border-radius:8px;background:#FFFDF7;-webkit-overflow-scrolling:touch}
.ledger table{width:100%;border-collapse:collapse;font:500 .75rem/1.25 var(--board);color:var(--ink);font-variant-numeric:tabular-nums}
.ledger tr.night th{position:sticky;top:0;z-index:2;background:var(--ink);color:var(--ticket);text-align:left;font-weight:500;padding:0}
.ledger .nh{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:6px 8px;flex-wrap:wrap}
.ledger .nh b{color:var(--lamp)}
.ledger .xn{appearance:none;border:1px solid var(--lamp);background:transparent;color:var(--lamp);border-radius:5px;padding:4px 8px;min-height:30px;font:600 .6875rem/1 var(--board);cursor:pointer;white-space:nowrap}
.ledger tr.cols td{color:#6A5A3A;font-size:.625rem;letter-spacing:.06em;text-transform:uppercase;padding:6px 5px 3px;border-bottom:1px solid #D8CEB6}
.ledger tr.tk td{padding:7px 5px;border-bottom:1px solid #EEE7D6;white-space:nowrap}
.ledger tr.tk td.nm{max-width:9.5em;overflow:hidden;text-overflow:ellipsis}
.ledger tr.tk td.r{text-align:right}
.ledger tr.tk{cursor:pointer}
.ledger tr.tk:hover td{background:#FBF3DE}
.ledger tr.tk:focus-visible{outline:2px solid var(--ink);outline-offset:-2px}
.ledger tr.tk.out td{color:#7A705C;text-decoration:line-through;text-decoration-color:#8A7E66}
.ledger tr.tk.wrong td{background:#FBE9B8;outline:2px dashed #B07A10;outline-offset:-2px}
.ledger tr.tk.found td{background:#F2B632;color:var(--ink);font-weight:700;text-decoration:none}
.line-map{display:grid;grid-template-columns:auto 1fr;gap:2px 10px;font:500 .8125rem/1.35 var(--board);color:var(--mist)}
.line-map b{color:var(--steam)}
.sec{color:var(--lamp);font-size:.6875rem;padding-left:1.4em}
@media (max-width:560px){
  .ledger table{font-size:.6875rem}
  .ledger tr.tk td{padding:7px 3px}
  .ledger tr.cols td{padding:6px 3px 3px;font-size:.5625rem}
  .ledger tr.tk td.nm{max-width:7.2em}
  .ledger tr.tk td:first-child,.ledger tr.cols td:first-child{padding-left:6px}
  .notebook .nb-quote{font-size:.9375rem}
}