/* Escape rooms: the Escape Room Studio look (BUILD_2.md §9), kept inside
   .er so the site around it keeps its own colours. The play page puts .er
   on <body>; the library and print pages put it on <main>, under the site
   bar. Three skins share one token set (data-style on .er: riso, vault,
   zine); printed pages always use the light riso paper. */

@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/ibm-plex-mono-400-regular-latin.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/ibm-plex-mono-600-regular-latin.woff2) format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/ibm-plex-mono-700-regular-latin.woff2) format('woff2'); }

.er {
  --bg: #F4F0E5; --bg2: #FBF8F0; --bg3: #ECE5D4;
  --ink: #232826; --ink-soft: #4E5953; --ink-mute: #7C857E;
  --pink: #E6478C; --pink-ink: #C5306F; --pink-wash: #F7D5E3;
  --green: #1A8C63; --green-ink: #0E6B4A; --green-wash: #CFE8DC;
  --line: #232826; --dot: rgba(230, 71, 140, .10); --warn: #B66A00; --bad: #C0392B; --on-pink: #fff;
  --f-display: "Bricolage Grotesque", "Arial Narrow", system-ui, sans-serif;
  --f-body: "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --f-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --radius: 4px; --card-border: 1.5px; --shadow: 4px 4px 0 var(--green);
  background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: 15px; line-height: 1.5;
  background-image: radial-gradient(var(--dot) 1px, transparent 1.4px); background-size: 7px 7px;
}
:root[data-theme="dark"] .er {
  --bg: #172420; --bg2: #1E2E29; --bg3: #243832;
  --ink: #EDE9DA; --ink-soft: #C6C8B9; --ink-mute: #8A988E;
  --pink: #FF73AD; --pink-ink: #FF8FBE; --pink-wash: #4A2235;
  --green: #43D69C; --green-ink: #6FE5B8; --green-wash: #1F4A3A;
  --line: #EDE9DA; --dot: rgba(255, 115, 173, .08); --warn: #F2B04A; --bad: #FF7A6B; --on-pink: #2A0E1B;
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .er {
    --bg: #172420; --bg2: #1E2E29; --bg3: #243832;
    --ink: #EDE9DA; --ink-soft: #C6C8B9; --ink-mute: #8A988E;
    --pink: #FF73AD; --pink-ink: #FF8FBE; --pink-wash: #4A2235;
    --green: #43D69C; --green-ink: #6FE5B8; --green-wash: #1F4A3A;
    --line: #EDE9DA; --dot: rgba(255, 115, 173, .08); --warn: #F2B04A; --bad: #FF7A6B; --on-pink: #2A0E1B;
    color-scheme: dark;
  }
}
/* Containment is always dark, whatever the reader's theme. */
:root[data-theme] .er[data-style="vault"], :root:not([data-theme]) .er[data-style="vault"] {
  --bg: #0E1916; --bg2: #14231F; --bg3: #1B2F29;
  --ink: #DDF3E8; --ink-soft: #9EC2B2; --ink-mute: #6C8F80;
  --pink: #FF5FA2; --pink-ink: #FF86B9; --pink-wash: #3D1A2B;
  --green: #3BE29B; --green-ink: #7BF0BF; --green-wash: #143A2C;
  --line: #2F5145; --dot: rgba(59, 226, 155, .06); --warn: #F2B04A; --bad: #FF7A6B; --on-pink: #fff;
  --f-display: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --radius: 2px; --card-border: 1px; --shadow: none;
  color-scheme: dark;
}
.er[data-style="zine"] { --radius: 14px; --card-border: 2.5px; --shadow: 6px 6px 0 var(--pink); }

.er *, .er *::before, .er *::after { box-sizing: border-box; }
.er [hidden] { display: none !important; }
.er button, .er input, .er select, .er textarea { font: inherit; color: inherit; }
.er button { cursor: pointer; }
.er :focus-visible { outline: 2.5px solid var(--pink); outline-offset: 2px; }
.er .wrap { max-width: 1180px; margin: 0 auto; padding-inline: clamp(16px, 3vw, 32px); padding-block: 20px 64px; }

/* ---------- the bar on the play page: your name, the room, the way home ---------- */
.er .bar { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: var(--bg); border-bottom: var(--card-border) solid var(--line); }
.er .bar-in { max-width: 1180px; margin: 0 auto; padding: 10px clamp(16px, 3vw, 32px); display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; }
.er .er-brand { display: flex; align-items: baseline; gap: 8px; margin-right: auto; min-width: 0; color: inherit; text-decoration: none; }
.er .er-brand b { font-family: var(--f-display); font-weight: 800; font-size: 17px; letter-spacing: -.01em; }
.er .er-brand i { font-family: var(--f-serif); font-size: 18px; color: var(--pink-ink); }
.er[data-style="vault"] .er-brand b { text-transform: uppercase; font-size: 14px; letter-spacing: .06em; }
.er .bar-note { font-family: var(--f-mono); font-size: 12px; color: var(--ink-mute); }

/* ---------- shared ---------- */
.er .eyebrow { font-family: var(--f-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-mute); }
.er h1, .er h2, .er h3 { font-family: var(--f-display); text-wrap: balance; margin: 0; letter-spacing: -.015em; color: inherit; }
.er h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.02; font-weight: 800; }
.er h2 { font-size: clamp(20px, 2.6vw, 26px); font-weight: 750; }
.er h3 { font-size: 17px; font-weight: 700; }
.er .mis { text-shadow: 2px 1.5px 0 var(--pink-wash); }
.er[data-style="vault"] h1, .er[data-style="vault"] h2 { text-transform: uppercase; letter-spacing: .02em; font-weight: 600; }
.er[data-style="vault"] h1 { font-size: clamp(26px, 4vw, 40px); }
.er[data-style="vault"] .mis { text-shadow: 0 0 18px rgba(59, 226, 155, .25); }
.er[data-style="zine"] h1, .er[data-style="zine"] h2 { font-weight: 800; text-transform: uppercase; letter-spacing: -.005em; }
.er[data-style="zine"] .mis { text-shadow: 3px 3px 0 var(--pink); }
.er .muted { color: var(--ink-soft); }
.er .card { background: var(--bg2); border: var(--card-border) solid var(--line); border-radius: var(--radius); padding: 18px; position: relative; min-width: 0; }
.er .btn { border: var(--card-border) solid var(--line); background: var(--bg2); border-radius: 999px; padding: 9px 16px; font-weight: 650; display: inline-flex; gap: 8px; align-items: center; transition: transform .12s; color: var(--ink); text-decoration: none; font-size: 15px; line-height: 1.3; }
.er .btn:hover { transform: translateY(-1px); }
.er .btn.primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.er .btn.pink { background: var(--pink); color: var(--on-pink); border-color: var(--pink); }
.er .btn.sm { padding: 5px 12px; font-size: 13px; }
.er[data-style="vault"] .btn { border-radius: 2px; font-family: var(--f-mono); text-transform: uppercase; font-size: 12.5px; letter-spacing: .05em; }
.er[data-style="vault"] .btn.primary { background: var(--green); color: #062118; border-color: var(--green); }
.er[data-style="zine"] .btn { border-width: 2.5px; box-shadow: 3px 3px 0 var(--ink); }
.er .btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.er .chip { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; border: 1px solid currentColor; white-space: nowrap; }
.er .chip.ok { color: var(--green-ink); } .er .chip.warn { color: var(--warn); } .er .chip.bad { color: var(--bad); }
.er .toast { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%) translateY(20px); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 14px; opacity: 0; transition: .25s; pointer-events: none; z-index: 50; max-width: calc(100% - 32px); }
.er .toast.on { opacity: 1; transform: translateX(-50%) translateY(0); }

/* difficulty badge */
.er .diff { display: inline-flex; align-items: center; gap: 5px; font-family: var(--f-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); white-space: nowrap; }
.er .diff i { width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--pink); display: inline-block; }
.er .diff i.on { background: var(--pink); }
.er[data-style="vault"] .diff i { border-radius: 1px; }

/* skin decorations */
.er[data-style="riso"] .card.decoder { box-shadow: var(--shadow); }
.er[data-style="vault"] .card.decoder::before, .er[data-style="vault"] .mission::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 8px; background: repeating-linear-gradient(-45deg, var(--pink) 0 10px, transparent 10px 20px); opacity: .9; }
.er[data-style="vault"] .card.decoder, .er[data-style="vault"] .mission { padding-top: 24px; }
.er[data-style="zine"] .card { box-shadow: 4px 4px 0 var(--ink); }
.er[data-style="zine"] .card.decoder { box-shadow: var(--shadow); transform: rotate(.6deg); }
.er[data-style="zine"] .qcard:nth-child(odd) { transform: rotate(-.5deg); }
.er[data-style="zine"] .qcard:nth-child(even) { transform: rotate(.45deg); }
.er[data-style="zine"] .card.decoder::after, .er[data-style="zine"] .mission::after {
  content: ""; position: absolute; top: -12px; left: 50%; width: 90px; height: 24px; transform: translateX(-50%) rotate(-3deg);
  background: color-mix(in srgb, var(--green) 45%, transparent); border: 1px dashed color-mix(in srgb, var(--ink) 25%, transparent); }

/* ---------- mission ---------- */
.er .mission { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 24px; align-items: end; margin-bottom: 22px; overflow: hidden; }
.er .mission p { margin: 10px 0 0; max-width: 62ch; color: var(--ink-soft); }
.er .locks { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.er .lock { width: 52px; display: flex; flex-direction: column; align-items: center; gap: 3px; border: 0; background: none; padding: 0; color: var(--ink); }
.er .lock svg { width: 38px; height: 44px; }
.er .lock span { font-family: var(--f-mono); font-size: 11px; color: var(--ink-mute); }
.er .lock[aria-current="true"] span { color: var(--pink-ink); font-weight: 600; }
.er .statline { display: flex; gap: 16px; justify-content: flex-end; margin-top: 10px; font-family: var(--f-mono); font-size: 12px; color: var(--ink-soft); font-variant-numeric: tabular-nums; flex-wrap: wrap; }

/* ---------- play ---------- */
.er .play { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.er .lvhead { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.er .qgrid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.er .qcard { display: flex; flex-direction: column; gap: 10px; }
.er .qtag { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.er .qnum { font-family: var(--f-display); font-weight: 800; font-size: 14px; background: var(--ink); color: var(--bg); padding: 1px 8px; border-radius: var(--radius); }
.er[data-style="zine"] .qnum { background: var(--pink); color: var(--on-pink); border-radius: 999px; }
.er .qstem { font-weight: 600; font-size: 15px; line-height: 1.4; }
.er .opts { display: grid; gap: 6px; }
.er .opt { display: grid; grid-template-columns: 26px 1fr; gap: 8px; align-items: start; text-align: left; border: 1px solid color-mix(in srgb, var(--ink) 22%, transparent); background: transparent; border-radius: calc(var(--radius) + 2px); padding: 6px 8px; font-size: 14px; line-height: 1.35; }
.er .opt b { font-family: var(--f-mono); display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--ink); font-size: 12px; }
.er .opt:hover { border-color: var(--ink); }
.er .opt[aria-pressed="true"] { background: var(--pink-wash); border-color: var(--pink); }
.er .opt[aria-pressed="true"] b { background: var(--pink); border-color: var(--pink); color: var(--on-pink); }
.er .stim { margin-bottom: 14px; }
.er .stim table { border-collapse: collapse; width: 100%; font-size: 13.5px; font-variant-numeric: tabular-nums; }
.er .stim th, .er .stim td { border-bottom: 1px solid color-mix(in srgb, var(--ink) 20%, transparent); padding: 6px 8px; text-align: left; }
.er .stim td:last-child, .er .stim th:last-child { text-align: right; }

.er .side { display: grid; gap: 16px; position: sticky; top: 84px; }
.er .dec-title { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.er .how { font-size: 13.5px; color: var(--ink-soft); margin: 0 0 12px; }
.er .dec svg { display: block; max-width: 100%; height: auto; }

/* ---------- the decoders (escape-rooms/decoders.js draws them) ---------- */
.er .dice { display: grid; gap: 8px; }
.er .dice-row { display: flex; align-items: center; gap: 8px; font-family: var(--f-display); font-weight: 800; font-size: 18px; flex-wrap: nowrap; }
.er .die { width: 36px; height: 36px; flex: none; border: 2px solid var(--ink); border-radius: 8px; display: grid; grid-template-columns: repeat(3, 1fr); grid-template-rows: repeat(3, 1fr); padding: 4px; background: var(--bg); }
.er .die i { width: 6.5px; height: 6.5px; border-radius: 50%; place-self: center; background: transparent; }
.er .die i.p { background: var(--ink); }
.er .die.alt { background: var(--pink-wash); border-color: var(--pink-ink); }
.er .die.alt i.p { background: var(--pink-ink); }
.er .sgrid { border-collapse: collapse; margin: 0 auto; font-family: var(--f-mono); }
.er .sgrid th, .er .sgrid td { width: 44px; height: 38px; text-align: center; border: 1.5px solid var(--line); font-size: 13px; }
.er .sgrid th { background: var(--bg3); }
.er .legend { display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: center; margin-top: 12px; font-family: var(--f-mono); font-weight: 600; }
.er .legend span { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.er .dials { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; text-align: center; }
.er .dials b { font-family: var(--f-display); font-size: 18px; }
.er .dials small { display: block; font-family: var(--f-mono); font-size: 11px; color: var(--ink-soft); }
.er .eqs { display: grid; gap: 6px; font-family: var(--f-display); font-weight: 800; font-size: 19px; }
.er .eq { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.er .eq svg { width: 26px; height: 26px; flex: none; }
.er .alg { display: grid; grid-template-columns: auto auto; gap: 14px 22px; justify-content: center; align-items: start; }
.er .alg .legend { flex-direction: column; align-items: flex-start; margin: 0; font-size: 16px; }
.er .alg .legend svg { width: 24px; height: 24px; }
.er .dishes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 10px; justify-items: center; }
.er .dishes svg { width: 100%; max-width: 150px; }
.er .bins { display: grid; gap: 10px; justify-content: center; }
.er .bin-row { display: flex; align-items: flex-end; gap: 12px; }
.er .bin-row > b { font-family: var(--f-display); font-size: 18px; width: 22px; padding-bottom: 6px; }
.er .bin-cells { display: flex; gap: 6px; }
.er .bc { display: flex; flex-direction: column; align-items: center; gap: 2px; font-family: var(--f-mono); font-size: 11px; font-weight: 600; color: var(--ink-soft); }
.er .bc i { width: 34px; height: 34px; border: 2px solid var(--ink); border-radius: 3px; background: var(--bg); display: block; }
.er .bc i.on { background: var(--green); background-image: repeating-linear-gradient(45deg, rgba(0, 0, 0, .18) 0 3px, transparent 3px 7px); }
.er .segs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; }
.er .segblk { display: flex; align-items: center; gap: 8px; justify-content: center; }
.er .segblk > b { font-family: var(--f-display); font-size: 18px; }
.er .segpair { display: flex; gap: 6px; align-items: flex-end; }
.er .segpair figure { margin: 0; display: grid; justify-items: center; gap: 2px; }
.er .segpair figcaption { font-family: var(--f-mono); font-size: 10px; color: var(--ink-mute); white-space: nowrap; }
.er .segpair svg { width: 34px; height: auto; display: block; }
.er .seqs { display: grid; gap: 8px; }
.er .seq { display: grid; grid-template-columns: 24px repeat(6, minmax(0, 1fr)); gap: 6px; align-items: center; font-family: var(--f-mono); font-weight: 600; font-size: 17px; font-variant-numeric: tabular-nums; }
.er .seq > b { font-family: var(--f-display); font-size: 18px; }
.er .seq span { border: 1.5px solid var(--line); border-radius: var(--radius); text-align: center; padding: 6px 0; background: var(--bg); }
.er .seq .gap { border-color: var(--pink); color: var(--pink-ink); border-style: dashed; border-width: 2px; }
.er .magic { border-collapse: collapse; margin: 0 auto; font-family: var(--f-display); font-weight: 800; }
.er .magic td { width: 52px; height: 52px; border: 2px solid var(--line); text-align: center; font-size: 22px; background: var(--bg); }
.er .magic td.lt { color: var(--pink-ink); background: var(--pink-wash); }
.er .magic td.bl { color: var(--ink-mute); }
.er .note { font-size: 12.5px; font-weight: 600; text-align: center; margin: 10px 0 0; color: var(--ink-soft); }
.er .clues { margin: 0; padding: 0; list-style: none; display: grid; gap: 7px; counter-reset: c; }
.er .clues li { display: grid; grid-template-columns: 22px 1fr; gap: 8px; font-size: 15px; font-weight: 600; counter-increment: c; align-items: baseline; }
.er .clues li::before { content: counter(c); font-family: var(--f-mono); font-size: 11px; color: var(--ink-mute); text-align: right; }
.er .clues .lt { display: inline-grid; place-items: center; min-width: 22px; height: 22px; border-radius: 5px; background: var(--pink-wash); color: var(--pink-ink); font-family: var(--f-display); font-weight: 800; padding: 0 4px; }
.er .cluehead { font-size: 13px; color: var(--ink-soft); margin: 0 0 8px; }
.er .rule { font-size: 12.5px; font-weight: 600; color: var(--pink-ink); margin: 10px 0 0; text-align: center; }

/* ---------- record sheet and combination ---------- */
.er .sheet table { width: 100%; border-collapse: collapse; font-family: var(--f-mono); text-align: center; font-variant-numeric: tabular-nums; }
.er .sheet td, .er .sheet th { border: 1.5px solid var(--line); padding: 6px 4px; font-size: 13px; }
.er .sheet th { font-weight: 600; background: var(--bg3); }
.er .sheet td.letter { font-family: var(--f-display); font-weight: 800; font-size: 18px; color: var(--pink-ink); }
.er .code { display: flex; gap: 8px; margin: 14px 0 10px; }
.er .code input { width: 100%; min-width: 0; aspect-ratio: 3 / 4; max-width: 56px; text-align: center; font-family: var(--f-display); font-size: 28px; font-weight: 800; border: 2px solid var(--line); border-radius: var(--radius); background: var(--bg); font-variant-numeric: tabular-nums; }
.er[data-style="vault"] .code input { font-family: var(--f-mono); color: var(--green); background: #08110E; border-color: var(--green); text-shadow: 0 0 10px rgba(59, 226, 155, .5); }
.er .code.shake { animation: er-shake .4s; }
@keyframes er-shake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.er .msg { font-size: 13.5px; min-height: 20px; margin: 0; }
.er .msg.ok { color: var(--green-ink); font-weight: 600; } .er .msg.no { color: var(--bad); }
.er .unlocked { background: var(--green-wash); border-color: var(--green); }
.er .lvnav { display: flex; gap: 8px; justify-content: space-between; margin-top: 16px; flex-wrap: wrap; align-items: center; }

.er .escaped { text-align: center; padding: 48px 20px; }
.er .escaped .big { font-family: var(--f-display); font-weight: 800; font-size: clamp(40px, 8vw, 84px); line-height: 1; margin: 10px 0; }
.er .escaped .cc { display: inline-block; font-family: var(--f-mono); font-size: 26px; letter-spacing: .2em; padding: 10px 20px; border: 2px dashed var(--pink); border-radius: var(--radius); margin: 14px 0; }

/* ---------- print pack ---------- */
.er .ptools { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin-bottom: 18px; }
.er .ptools label { display: inline-flex; gap: 6px; align-items: center; font-size: 14px; }
.er .pscroll { overflow-x: auto; padding-bottom: 12px; }
.er .pages {
  --bg: #F4F0E5; --bg2: #FFFFFF; --bg3: #ECE5D4; --ink: #232826; --ink-soft: #4E5953; --ink-mute: #7C857E;
  --pink: #E6478C; --pink-ink: #C5306F; --pink-wash: #F7D5E3; --green: #1A8C63; --green-ink: #0E6B4A; --green-wash: #CFE8DC; --line: #232826;
  --f-display: "Bricolage Grotesque", "Arial Narrow", system-ui, sans-serif; --radius: 4px;
  color: var(--ink); display: grid; gap: 24px; justify-content: center; color-scheme: light;
}
.er .pages.bw { filter: grayscale(1) contrast(1.1); }
.er .page { width: 210mm; height: 297mm; padding: 12mm 12mm 14mm; background: #fff; box-shadow: 0 2px 14px rgba(0, 0, 0, .18); position: relative; overflow: hidden; font-size: 10.5pt; line-height: 1.4; display: flex; flex-direction: column; }
.er .page.flow { height: auto; min-height: 297mm; overflow: visible; }
.er .pfoot { position: absolute; left: 12mm; right: 12mm; bottom: 5mm; display: flex; justify-content: space-between; gap: 4mm; font-family: var(--f-mono); font-size: 7.5pt; color: var(--ink-mute); }
.er .pfoot b { font-family: var(--f-display); color: var(--ink); font-size: 8pt; }
.er .phead { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; border-bottom: 2px solid var(--ink); padding-bottom: 3mm; margin-bottom: 5mm; }
.er .phead h2 { font-size: 20pt; }
.er .page .eyebrow { font-size: 7.5pt; }
.er .cutgrid { flex: 1; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; min-height: 0; }
.er .cutgrid.stim { grid-template-rows: auto 1fr 1fr; }
.er .cell { border: 1px dashed #9AA19C; padding: 4mm; min-height: 0; display: flex; position: relative; }
.er .cell::before { content: "✂"; position: absolute; top: -7px; left: 6px; font-size: 9pt; color: #9AA19C; background: #fff; padding: 0 2px; line-height: 1; }
.er .cell.span { grid-column: 1 / -1; }
.er .pc { flex: 1; border: 1.5px solid var(--ink); border-radius: 3mm; padding: 4mm; display: flex; flex-direction: column; gap: 2.5mm; min-height: 0; min-width: 0; overflow: hidden; background: var(--bg2); }
.er .pc .qnum { font-size: 10pt; }
.er .pc .qstem { font-size: calc(13pt * var(--fs, 1)); font-weight: 650; line-height: 1.35; }
.er .pc ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 2.6mm; }
.er .pc li { display: grid; grid-template-columns: 7mm 1fr; gap: 2mm; font-size: calc(11.5pt * var(--fs, 1)); line-height: 1.3; }
.er .pc li b { font-family: var(--f-mono); font-size: 8.5pt; width: 5.5mm; height: 5.5mm; border: 1.3px solid var(--ink); border-radius: 50%; display: grid; place-items: center; }
.er .pc.dk { box-shadow: 2mm 2mm 0 var(--green); margin: 0 2mm 2mm 0; }
.er .pc.dk .dec-title h3 { font-size: 14pt; }
.er .pc .how { font-size: 9pt; margin: 0; }
.er .pc .decwrap { flex: 1; display: flex; flex-direction: column; justify-content: center; min-height: 0; }
.er .pc .decwrap > svg { max-height: 62mm; width: 100%; margin: 0 auto; }
.er .pc .dials svg { max-height: 24mm; }
.er .pc .dice-row { font-size: 15px; }
.er .pc .die { width: 30px; height: 30px; padding: 3px; }
.er .pc .die i { width: 5.5px; height: 5.5px; }
.er .cutgrid.stim .pc .qstem { font-size: calc(11.5pt * var(--fs, 1)); }
.er .cutgrid.stim .pc li { font-size: calc(10.5pt * var(--fs, 1)); }
.er .pc.stimc { font-size: calc(10.5pt * var(--fs, 1)); }
.er .cutgrid.stim .pc ol { gap: 1.8mm; }
.er .pc .dishes svg { max-height: 31mm; }
.er .pc .bc i { width: 9mm; height: 9mm; }
.er .pc .seq { font-size: 12pt; }
.er .pc .segpair svg { width: 9mm; }
.er .pc .magic td { width: 13mm; height: 13mm; font-size: 16pt; }
.er .pc .clues li { font-size: 11pt; }
.er .pc.stimc table { border-collapse: collapse; width: 100%; font-size: calc(9.5pt * var(--fs, 1)); }
.er .pc.stimc td, .er .pc.stimc th { border-bottom: 1px solid #C9C3B3; padding: 1.2mm 2mm; text-align: left; }
.er .pc.stimc td:last-child, .er .pc.stimc th:last-child { text-align: right; }
.er .poster { flex: 1; display: flex; flex-direction: column; justify-content: center; gap: 8mm; border: 2px solid var(--ink); border-radius: 4mm; padding: 14mm; background: var(--bg); background-image: radial-gradient(rgba(230, 71, 140, .14) 1px, transparent 1.4px); background-size: 2.2mm 2.2mm; }
.er .poster h1 { font-size: 48pt; line-height: .98; text-shadow: 1.2mm .8mm 0 var(--pink-wash); }
.er .poster p { font-size: 14pt; line-height: 1.45; max-width: 150mm; margin: 0; }
.er .poster .locks { justify-content: flex-start; }
.er .poster .lock svg { width: 16mm; height: 18mm; }
.er .gtable { width: 100%; border-collapse: collapse; font-size: 9.5pt; margin: 2mm 0 5mm; }
.er .gtable th, .er .gtable td { border-bottom: 1px solid #C9C3B3; padding: 1.6mm 2mm; text-align: left; vertical-align: middle; }
.er .gtable th { font-family: var(--f-mono); font-size: 7.5pt; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-mute); font-weight: 600; }
.er .gtable .diff { font-size: 7pt; }
.er .cols { display: grid; grid-template-columns: 1fr 1fr; gap: 6mm; }
.er .page h3 { font-size: 12pt; margin: 0 0 1.5mm; }
.er .page ul.tight { margin: 0; padding-left: 4.5mm; } .er .page ul.tight li { margin-bottom: 1mm; }
.er .rs { display: grid; grid-template-columns: 1fr 1fr; gap: 5mm; flex: 1; align-content: start; }
.er .rs .blk { border: 1.5px solid var(--ink); border-radius: 3mm; padding: 3.5mm; }
.er .rs table { width: 100%; border-collapse: collapse; text-align: center; font-family: var(--f-mono); font-size: 9pt; margin-top: 2mm; }
.er .rs td, .er .rs th { border: 1.3px solid var(--ink); height: 10mm; }
.er .rs th { background: var(--bg3); height: 7mm; font-weight: 600; }
.er .rs .final { border-color: var(--pink); border-width: 2px; display: flex; flex-direction: column; justify-content: center; text-align: center; gap: 3mm; background: var(--pink-wash); }
.er .rs .boxes { display: flex; gap: 2mm; justify-content: center; }
.er .rs .boxes span { width: 11mm; height: 13mm; border: 1.5px solid var(--ink); border-radius: 1.5mm; background: #fff; }
.er .key { width: 100%; border-collapse: collapse; font-size: 9pt; }
.er .key td, .er .key th { border-bottom: 1px solid #C9C3B3; padding: 1.3mm 1.6mm; text-align: left; vertical-align: top; }
.er .key .lk td { background: var(--bg3); font-weight: 700; border-bottom: 1.5px solid var(--ink); font-size: 9.5pt; }
.er .key .lk code { font-family: var(--f-mono); color: var(--pink-ink); letter-spacing: .12em; font-size: 11pt; }
.er .key .ans { font-family: var(--f-mono); font-weight: 600; white-space: nowrap; }
.er .key tbody { break-inside: avoid; }

/* ---------- the library page ---------- */
.er.er-hub { padding-block: 34px 64px; }
.er .hub-hero { display: grid; gap: 10px; justify-items: start; margin-bottom: 8px; }
.er .hub-hero h1 { margin: 0; }
.er .hub-hero p { margin: 0; max-width: 62ch; color: var(--ink-soft); font-size: 16.5px; }
.er .hub-cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.er .hub-hero .lede-em { font-family: var(--f-serif); font-style: italic; font-weight: 400; color: var(--pink-ink); }
.er .how-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; counter-reset: st; }
.er .how-steps li { counter-increment: st; display: grid; grid-template-columns: 28px 1fr; gap: 10px; font-size: 14px; color: var(--ink-soft); }
.er .how-steps li::before { content: counter(st); display: grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--ink); color: var(--bg); font-family: var(--f-mono); font-size: 12px; font-weight: 600; }
.er .how-steps b { color: var(--ink); }
.er .hub-h { display: grid; gap: 4px; margin: 44px 0 14px; }
.er .hub-h h2 { margin: 0; }
.er .hub-h .muted { font-size: 14.5px; max-width: 70ch; }
.er .rooms { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.er .room { display: flex; flex-direction: column; gap: 8px; }
.er .room .eyebrow { color: var(--green-ink); }
.er .room h3 { font-size: 19px; }
.er .room p { margin: 0; font-size: 14px; color: var(--ink-soft); }
.er .room .acts { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: auto; padding-top: 6px; }
/* The "···" menu on a room card: the less used actions */
.er .more { position: relative; }
.er .more summary { list-style: none; cursor: pointer; letter-spacing: .1em; }
.er .more summary::-webkit-details-marker { display: none; }
.er .more .menu { position: absolute; z-index: 5; right: 0; top: calc(100% + 6px); display: grid; min-width: 170px; background: var(--bg2); border: var(--card-border) solid var(--line); border-radius: 12px; padding: 6px; box-shadow: 3px 3px 0 var(--ink); }
.er .more .menu button { border: 0; background: none; text-align: left; padding: 8px 10px; border-radius: 8px; font-size: 14px; font-weight: 600; color: var(--ink); }
.er .more .menu button:hover, .er .more .menu button:focus-visible { background: var(--pink-wash); }
/* How it works, and the decoders, folded away */
.er .hub-more { margin-top: 44px; border-top: 1.5px solid var(--line); padding-top: 16px; }
.er .hub-more summary { cursor: pointer; display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; font-size: 18px; }
.er .hub-more summary .muted { font-size: 14.5px; }
.er .hub-more[open] summary { margin-bottom: 16px; }
.er .hub-more .how-steps { max-width: 70ch; margin-bottom: 18px; }
.er .room.bonus { border-style: dashed; }
.er[data-style="riso"] .room { box-shadow: 3px 3px 0 var(--green); }
.er .gal-tools { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.er .seg { display: inline-flex; border: var(--card-border) solid var(--line); border-radius: 999px; overflow: hidden; background: var(--bg2); }
.er .seg button { border: 0; background: transparent; padding: 6px 12px; font-size: 13px; font-weight: 600; white-space: nowrap; }
.er .seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.er .gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 16px; margin-top: 14px; }
.er .gal-h { grid-column: 1 / -1; margin-top: 8px; }

/* ---------- small screens, motion ---------- */
@media (max-width: 900px) {
  .er .play, .er .mission, .er .hub-hero { grid-template-columns: minmax(0, 1fr); }
  .er .side { position: static; }
  .er .locks, .er .statline { justify-content: flex-start; }
  .er .pages { justify-content: start; }
}
@media (max-width: 560px) {
  .er .qgrid { grid-template-columns: minmax(0, 1fr); }
  .er .seq { font-size: 15px; gap: 4px; }
}
@media (prefers-reduced-motion: reduce) { .er *, .er *::before, .er *::after { animation: none !important; transition: none !important; } }

/* ---------- printing the pack: only the A4 pages ---------- */
@media print {
  @page { size: A4; margin: 0; }
  html:has(.er-print), body:has(.er-print) { background: #fff !important; background-image: none !important; margin: 0 !important; padding: 0 !important; }
  body:has(.er-print) > *:not(main) { display: none !important; }
  .er-print { background: #fff !important; background-image: none !important; padding: 0 !important; margin: 0 !important; }
  .er-print .wrap { padding: 0 !important; max-width: none; }
  .er-print .ptools, .er-print .pnote { display: none !important; }
  .er-print .pscroll { overflow: visible; padding: 0; }
  .er-print .pages { gap: 0; display: block; }
  .er-print .page { box-shadow: none; break-after: page; margin: 0; }
  .er-print .page:last-child { break-after: auto; }
}

/* ---------- the editor ---------- */
.er.er-edit { padding-block: 26px 64px; }
.er .ed-bar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 12px 20px; margin-bottom: 18px; }
.er .ed-acts, .er .ed-tools { display: flex; flex-wrap: wrap; gap: 8px; }
.er .ed-tools { margin-top: 14px; padding-top: 10px; border-top: 1px solid color-mix(in srgb, var(--ink) 15%, transparent); gap: 16px; }
.er .ed-h1 { font-size: clamp(24px, 3.4vw, 34px); margin: 2px 0 0; }
.er .linkbtn { border: 0; background: none; padding: 2px 0; font-size: 13px; font-weight: 600; color: var(--ink-soft); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.er .linkbtn:hover { color: var(--ink); }
.er .linkbtn.danger { color: var(--bad); }
.er .linkbtn[disabled] { opacity: .5; cursor: wait; }
.er .ed-side-h { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.er .ed-side-h .summary { margin: 0; }
.er .lvtab { justify-content: flex-start; }
.er .lvtab > span:nth-child(2) { flex: 1; min-width: 0; }
.er .lvtab .lvn { flex: none; display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; border: 1.5px solid var(--ink); font-family: var(--f-mono); font-size: 12px; font-weight: 600; }
.er .lvtab[aria-pressed="true"] .lvn { background: var(--ink); color: var(--bg); }
.er .ed-sec { border-top: 1px solid color-mix(in srgb, var(--ink) 15%, transparent); margin-top: 14px; padding-top: 10px; }
.er .ed-sec summary, .er .ed-dec summary { cursor: pointer; font-weight: 650; font-size: 14.5px; }
.er .ed-sec[open] summary { margin-bottom: 10px; }
.er .ed-lockcard { margin-bottom: 16px; display: grid; gap: 10px; }
.er .ed-lockcard .ed-top { margin: 0; align-items: flex-end; }
.er .ed-name { display: grid; gap: 2px; flex: 1 1 280px; min-width: 0; }
.er .ed-name-in { font-family: var(--f-display); font-size: 24px; font-weight: 700; border: 1.5px solid transparent; background: transparent; border-radius: var(--radius); padding: 2px 6px; margin-left: -7px; width: 100%; color: var(--ink); }
.er .ed-name-in:hover { border-color: color-mix(in srgb, var(--ink) 25%, transparent); }
.er .ed-name-in:focus { border-color: var(--ink); background: var(--bg); outline: none; }
.er .ed-dec { border: 1.5px dashed color-mix(in srgb, var(--ink) 30%, transparent); border-radius: var(--radius); padding: 10px 12px; }
.er .ed-dec summary { display: flex; justify-content: space-between; gap: 10px; font-weight: 500; list-style: none; }
.er .ed-dec summary::-webkit-details-marker { display: none; }
.er .ed-change { color: var(--pink-ink); font-weight: 650; text-decoration: underline; text-underline-offset: 3px; font-size: 13.5px; }
.er .ed-dec[open] .ed-change { visibility: hidden; }
.er .ed-dec[open] summary { margin-bottom: 12px; }
.er .ed-dec .ed-preview { border: 0; padding: 0; background: none; }
.er .ed-q textarea { width: 100%; border: 1.5px solid color-mix(in srgb, var(--ink) 30%, transparent); background: var(--bg); border-radius: var(--radius); padding: 8px 10px; font-size: 15px; font-weight: 600; line-height: 1.4; resize: vertical; }
.er .ed-opts { display: grid; gap: 6px; }
.er .ed-why { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; align-items: center; }
.er .ed-why label { font-family: var(--f-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-mute); }
.er .ed-why input { width: 100%; min-width: 0; border: 0; border-bottom: 1.5px solid color-mix(in srgb, var(--ink) 25%, transparent); background: transparent; padding: 6px 2px; font-size: 13.5px; color: var(--ink-soft); }
.er .ed-why input:focus { outline: none; border-bottom-color: var(--ink); }
.er .checks:empty { display: none; }
.er .ed-foot { font-size: 13px; margin: 4px 0 0; }
.er .ed-status { color: var(--green-ink); }
.er .ed-status.bad { color: var(--bad); }
.er .edit { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 22px; align-items: start; }
.er .edit > .card:first-child { position: sticky; top: 90px; max-height: calc(100vh - 110px); overflow-y: auto; }
.er .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.er .field { display: grid; gap: 4px; margin-bottom: 12px; min-width: 0; }
.er .field label { font-family: var(--f-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-mute); }
.er .field input, .er .field textarea, .er .field select { width: 100%; min-width: 0; border: 1.5px solid color-mix(in srgb, var(--ink) 35%, transparent); background: var(--bg); border-radius: var(--radius); padding: 8px 10px; font-size: 14.5px; }
.er .field textarea { resize: vertical; min-height: 60px; line-height: 1.45; }
.er .summary { display: flex; gap: 8px; flex-wrap: wrap; margin: 6px 0 4px; }
.er .lvtabs { display: grid; gap: 6px; margin-top: 10px; }
.er .lvtab { display: flex; justify-content: space-between; align-items: center; gap: 8px; text-align: left; border: 1.5px solid color-mix(in srgb, var(--ink) 25%, transparent); background: var(--bg); border-radius: var(--radius); padding: 8px 10px; font-size: 14px; }
.er .lvtab[aria-pressed="true"] { border-color: var(--ink); background: var(--bg3); }
.er .lvtab small { display: block; color: var(--ink-mute); font-size: 12px; }
.er .ed-q { display: grid; gap: 10px; margin-bottom: 16px; }
.er .ed-q textarea { min-height: 52px; }
.er .ed-opt { display: grid; grid-template-columns: auto 24px minmax(0, 1fr); gap: 8px; align-items: center; }
.er .ed-opt input[type=text] { width: 100%; min-width: 0; border: 1.5px solid color-mix(in srgb, var(--ink) 30%, transparent); background: var(--bg); border-radius: var(--radius); padding: 6px 9px; font-size: 14px; }
.er .ed-opt input[type=radio] { accent-color: var(--green); width: 18px; height: 18px; }
.er .ed-opt b { font-family: var(--f-mono); }
.er .ed-opt.correct input[type=text] { border-color: var(--green); background: var(--green-wash); }
.er .checks { display: flex; flex-wrap: wrap; gap: 6px; }
.er .chip { white-space: normal; }
.er .ed-top { display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.er .ed-meta { display: flex; flex-wrap: wrap; gap: 8px 18px; font-family: var(--f-mono); font-size: 13px; align-items: center; }
.er .ed-meta strong { font-size: 16px; letter-spacing: .12em; color: var(--pink-ink); }
.er .ed-lock { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 300px); gap: 20px; align-items: start; }
.er .ed-preview { border: 1.5px dashed color-mix(in srgb, var(--ink) 35%, transparent); border-radius: var(--radius); padding: 14px; background: var(--bg); }
.er .ed-stim { margin-top: 10px; font-size: 13px; color: var(--ink-soft); }
.er .ed-stim p { margin: 2px 0 0; }
.er .mine { display: grid; gap: 8px; }
.er .mine-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding: 12px 14px; }
.er .mine-row .t { flex: 1 1 240px; min-width: 0; }
.er .mine-row .t b { display: block; font-size: 16px; }
.er .mine-row .t small { color: var(--ink-mute); font-family: var(--f-mono); font-size: 11.5px; }
@media (max-width: 900px) {
  .er .edit, .er .ed-lock { grid-template-columns: minmax(0, 1fr); }
  .er .edit > .card:first-child { position: static; }
}
@media (max-width: 560px) { .er .row2 { grid-template-columns: minmax(0, 1fr); } }

/* A question's own table (question-bank rooms) */
.er .qtab { overflow-x: auto; margin: 8px 0 2px; }
.er .qtab table { border-collapse: collapse; font-size: 13px; font-variant-numeric: tabular-nums; min-width: 60%; }
.er .qtab th, .er .qtab td { border: 1px solid color-mix(in srgb, var(--ink) 25%, transparent); padding: 4px 8px; text-align: left; }
.er .qtab th { font-family: var(--f-mono); font-size: 11px; font-weight: 600; letter-spacing: .02em; background: color-mix(in srgb, var(--ink) 5%, transparent); }
.er .pc .qtab { margin: 1.5mm 0; overflow: visible; }
.er .pc .qtab table { font-size: calc(9pt * var(--fs, 1)); }
.er .pc .qtab th { font-size: calc(7.5pt * var(--fs, 1)); }
.er .pc .qtab th, .er .pc .qtab td { padding: .8mm 1.6mm; }

/* Build a room from the question bank (library page) */
.er .bank-card { display: grid; gap: 14px; }
.er .bank-top { display: flex; flex-wrap: wrap; gap: 10px 14px; }
.er .bank-note { margin: 0; max-width: 75ch; font-size: 14.5px; }
.er .bank-pick { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 4px 22px; align-items: start; }
.er .bk-themes { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; border-bottom: 1.5px solid color-mix(in srgb, var(--ink) 15%, transparent); }
.er .bk-themes[hidden] { display: none; }
.er .bk-themes button { border: 0; background: none; padding: 8px 12px 10px; display: grid; justify-items: start; gap: 1px; text-align: left; position: relative; border-bottom: 3px solid transparent; margin-bottom: -1.5px; color: var(--ink-soft); }
.er .bk-themes button b { font-size: 14px; color: var(--ink); }
.er .bk-themes button span { font-size: 12px; white-space: nowrap; }
.er .bk-themes button i { position: absolute; top: 4px; right: 0; font-style: normal; font-family: var(--f-mono); font-size: 11px; background: var(--pink); color: var(--on-pink); border-radius: 99px; min-width: 18px; padding: 0 5px; text-align: center; }
.er .bk-themes button[aria-selected="true"] { border-bottom-color: var(--pink); color: var(--ink); }
.er .bk-all { justify-self: start; border: 0; background: none; padding: 6px 0; font-size: 13.5px; font-weight: 650; color: var(--pink-ink); text-decoration: underline; text-underline-offset: 3px; }
.er .bk-row { display: flex; gap: 8px; align-items: baseline; font-size: 14.5px; line-height: 1.3; cursor: pointer; padding: 5px 0; }
.er .bk-row input { accent-color: var(--pink); flex: none; transform: translateY(1px); }
.er .bk-row .code { font-family: var(--f-mono); font-size: 12px; color: var(--ink-soft); min-width: 3.2em; }
.er .bk-row .n { margin-left: auto; font-family: var(--f-mono); font-size: 11.5px; color: var(--ink-mute); font-variant-numeric: tabular-nums; }
.er .bk-row.off { opacity: .45; cursor: not-allowed; }
.er .bank-go { display: flex; flex-wrap: wrap; gap: 12px 18px; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px solid color-mix(in srgb, var(--ink) 18%, transparent); }
.er .bank-meter { display: grid; gap: 6px; flex: 1 1 260px; font-size: 14px; }
.er .bank-meter .bar { height: 8px; border-radius: 99px; background: color-mix(in srgb, var(--ink) 10%, transparent); overflow: hidden; max-width: 360px; }
.er .bank-meter .bar i { display: block; height: 100%; width: 0; background: var(--pink); border-radius: 99px; transition: width .2s; }
.er .bank-meter.ready .bar i { background: var(--green); }
@media (prefers-reduced-motion: reduce) { .er .bank-meter .bar i { transition: none; } }
.er .ed-qtab { display: grid; gap: 6px; justify-items: start; }
.er .ed-qtab .qtab { margin: 0; max-width: 100%; }
/* The play page's briefing folds away once the first lock is open */
.er .brief summary { cursor: pointer; font-family: var(--f-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-mute); margin-top: 8px; }
.er .brief[open] summary { margin-bottom: 6px; }
.er .brief p { margin: 0; }
/* How classes have got on in a teacher's room */
.er .mine-stat { display: block; margin-top: 3px; font-size: 13px; color: var(--ink-soft); }
.er .mine-stat b, .er .ed-played b { color: var(--ink); font-variant-numeric: tabular-nums; }
.er .ed-played { margin: 4px 0 0; font-size: 13.5px; color: var(--ink-soft); }