/* PZ Mod Studio site. The rules behind it are in docs/SITE-DESIGN.md: colours from the key art
   (teal phosphor, rust red, bone white on near-black), condensed display type like the game's
   signage, mono for anything the game or the app would print. */
:root {
  --bg: #090f10; --bg2: #0c1517; --panel: #101b1e; --panel2: #0b1416; --line: #1c2e32; --line2: #29454a;
  --text: #e9e5dc; --muted: #a2b3b1; --dim: #6c8482;
  --teal: #2dd4bf; --teal2: #14b8a6; --rust: #d4432f; --amber: #f0a63a;
  --green: #34d399; --red: #f87171; --sky: #38bdf8; --violet: #a78bfa;
  --display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --body: 'IBM Plex Sans', system-ui, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', Consolas, Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
/* fine grid, as on the Workshop slides */
body::before { content: ''; position: fixed; inset: 0; pointer-events: none; z-index: -1;
  background-image: linear-gradient(rgba(45, 212, 191, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(45, 212, 191, .035) 1px, transparent 1px);
  background-size: 48px 48px; }
a { color: var(--teal); text-decoration: none; } a:hover { text-decoration: underline; text-underline-offset: 3px; }
code { font-family: var(--mono); font-size: .82em; background: var(--panel2); border: 1px solid var(--line); padding: 1px 5px; border-radius: 4px; }
img, video { max-width: 100%; height: auto; display: block; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.dim { color: var(--dim); } .muted { color: var(--muted); }
:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

/* top bar */
nav.top { position: sticky; top: 0; z-index: 10; background: rgba(9, 15, 16, .86); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
nav.top .wrap { display: flex; align-items: center; gap: 22px; height: 56px; }
nav.top a { color: var(--muted); font: 600 15px/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
nav.top a:hover, nav.top a.on { color: var(--text); text-decoration: none; }
nav.top .brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-size: 19px; margin-right: auto; letter-spacing: .04em; }
nav.top .brand img { width: 32px; height: 32px; }
nav.top .cta { color: #051512; background: var(--teal); padding: 8px 14px; border-radius: 3px; }
nav.top .cta:hover { background: #5eead4; color: #051512; }
@media (max-width: 860px) { nav.top .opt { display: none; } }

/* type */
h1, h2, h3, .display { font-family: var(--display); font-weight: 800; text-transform: uppercase; letter-spacing: .01em; line-height: .95; }
h2 { font-size: clamp(36px, 5vw, 60px); margin: 0 0 16px; }
h3 { font-size: 24px; font-weight: 700; margin: 0 0 8px; letter-spacing: .02em; }
.kicker { display: inline-block; font: 600 12px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--teal); margin-bottom: 14px; }
.kicker.rust { color: var(--rust); }
.lede { font-size: 19px; color: var(--muted); max-width: 640px; margin: 0 0 24px; }
section.block { padding: 96px 0 0; }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; font: 700 17px/1 var(--display); letter-spacing: .08em; text-transform: uppercase;
  background: var(--teal); color: #051512; padding: 14px 22px; border-radius: 3px; border: 1px solid var(--teal); margin: 0 8px 8px 0; cursor: pointer; }
.btn:hover { background: #5eead4; text-decoration: none; }
.btn.quiet { background: transparent; color: var(--text); border-color: var(--line2); }
.btn.quiet:hover { border-color: var(--teal); color: var(--teal); }
.btn.rust { background: var(--rust); border-color: var(--rust); color: #fff; } .btn.rust:hover { background: #e85a46; }
.btn.small { font-size: 14px; padding: 9px 14px; }

/* hero */
.hero { position: relative; padding: 72px 0 64px; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(54px, 8.4vw, 112px); margin: 0 0 22px; line-height: .86; }
.hero h1 em { font-style: normal; color: var(--rust); }
.hero .art { position: relative; }
.hero .art img { width: 100%; border-radius: 6px; border: 1px solid var(--line2); box-shadow: 0 30px 80px -20px rgba(45, 212, 191, .25); }
.facts { display: flex; flex-wrap: wrap; gap: 0; margin-top: 28px; border-top: 1px solid var(--line); }
.facts div { padding: 16px 28px 0 0; }
.facts b { display: block; font: 800 34px/1 var(--display); color: var(--text); }
.facts span { font: 500 11px/1.4 var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .12em; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } .hero { padding-top: 40px; } }

/* ticker */
.ticker { border-block: 1px solid var(--line); background: var(--bg2); overflow: hidden; white-space: nowrap; }
.ticker div { display: inline-block; padding: 14px 0; font: 700 20px/1 var(--display); letter-spacing: .12em; color: var(--dim); animation: tick 48s linear infinite; }
.ticker i { font-style: normal; color: var(--rust); margin: 0 22px; }
@keyframes tick { to { transform: translateX(-50%); } }

/* sort demo */
.split { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 32px; } }
.console { background: var(--panel2); border: 1px solid var(--line2); border-radius: 6px; overflow: hidden; }
.console .bar { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--line); font: 500 12px/1 var(--mono); color: var(--dim); }
.console .bar b { color: var(--text); font-weight: 600; } .console .bar .state { margin-left: auto; }
.console .bar .state.ok { color: var(--green); } .console .bar .state.bad { color: var(--amber); }
.rows { position: relative; }
.row { position: absolute; left: 0; right: 0; height: 58px; display: grid; grid-template-columns: 42px 1fr; align-items: center; padding: 0 14px 0 0;
  border-bottom: 1px solid var(--line); transition: transform .7s cubic-bezier(.7, 0, .2, 1), background .4s; }
.row .n { font: 600 13px/1 var(--mono); color: var(--dim); text-align: right; padding-right: 12px; }
.row .name { font: 500 15px/1.2 var(--body); }
.row .tag { display: block; font: 500 11.5px/1.3 var(--mono); margin-top: 4px; color: var(--amber); transition: color .4s; }
.row.ok .tag { color: var(--green); } .row.warn .tag { color: var(--amber); }
.row.moving { background: rgba(45, 212, 191, .06); }
.console .foot { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 14px; border-top: 1px solid var(--line); }
.console .foot .dim { font: 12px/1.4 var(--mono); margin-left: auto; }
ul.ticks { list-style: none; padding: 0; margin: 0; }
ul.ticks li { position: relative; padding: 0 0 12px 26px; color: var(--muted); }
ul.ticks li::before { content: ''; position: absolute; left: 0; top: 11px; width: 12px; height: 2px; background: var(--teal); }
ul.ticks li b { color: var(--text); font-weight: 600; }

/* two halves */
.halves { display: grid; grid-template-columns: 1fr 64px 1fr; margin-top: 40px; }
.half { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; display: flex; flex-direction: column; }
.half .media { aspect-ratio: 16 / 10; background: #000; border-bottom: 1px solid var(--line); overflow: hidden; }
.half .media img, .half .media video { width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.half .body { padding: 22px 24px 24px; flex: 1; }
.half .where { font: 600 12px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--dim); }
.half h3 { font-size: 34px; margin: 8px 0 12px; }
.wire { position: relative; display: flex; align-items: center; justify-content: center; }
.wire::before { content: ''; position: absolute; left: 0; right: 0; top: 50%; border-top: 2px dashed var(--line2); }
.wire span { position: relative; writing-mode: vertical-rl; transform: rotate(180deg); background: var(--bg); padding: 10px 0; font: 600 11px/1 var(--mono); letter-spacing: .2em; color: var(--teal); text-transform: uppercase; }
@media (max-width: 900px) { .halves { grid-template-columns: 1fr; } .wire { height: 56px; } .wire::before { left: 50%; right: auto; top: 0; bottom: 0; border-top: 0; border-left: 2px dashed var(--line2); } .wire span { writing-mode: horizontal-tb; transform: none; padding: 0 10px; } }
.alone { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.alone > div { border-left: 2px solid var(--line2); padding: 4px 0 4px 20px; }
.alone h4 { margin: 0 0 10px; font: 700 18px/1 var(--display); letter-spacing: .08em; text-transform: uppercase; }
@media (max-width: 700px) { .alone { grid-template-columns: 1fr; } }

/* crash to fix */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; counter-reset: step; }
.step { position: relative; }
.step .numeral { font: 800 120px/.8 var(--display); color: transparent; -webkit-text-stroke: 1px var(--line2); margin-bottom: -18px; }
.step:nth-child(1) .numeral { -webkit-text-stroke-color: var(--rust); }
.step .shot { background: #000; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; aspect-ratio: 16 / 9; display: flex; align-items: center; justify-content: center; }
.step .shot img { width: 100%; height: 100%; object-fit: cover; object-position: top left; }
.step .shot.fit img { object-fit: contain; }
.step h3 { margin-top: 18px; }
.step p { color: var(--muted); margin: 0; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; gap: 40px; } }

/* save check */
.savecard { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 24px; }
.savecard img { width: 100%; border-radius: 4px; border: 1px solid var(--line); margin-bottom: 20px; }
.choices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.choices div { border: 1px solid var(--line2); border-radius: 3px; padding: 12px; }
.choices b { display: block; font: 700 19px/1 var(--display); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 6px; }
.choices span { font-size: 13px; color: var(--muted); line-height: 1.4; display: block; }
@media (max-width: 560px) { .choices { grid-template-columns: 1fr; } }

/* the twelve screens */
.screens { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); margin-top: 32px; }
a.screen { display: grid; grid-template-columns: 56px 1fr 28px; gap: 12px; align-items: baseline; padding: 20px 8px 20px 0; border-bottom: 1px solid var(--line); color: inherit; transition: background .2s, padding .2s; }
.screens a.screen:nth-child(odd) { border-right: 1px solid var(--line); }
.screens a.screen:nth-child(even) { padding-left: 24px; }
a.screen:hover, a.screen:focus-visible { text-decoration: none; background: linear-gradient(90deg, color-mix(in srgb, var(--c) 10%, transparent), transparent 70%); outline: none; }
a.screen .num { font: 600 13px/1 var(--mono); color: var(--c); }
a.screen h3 { font-size: 28px; margin: 0 0 4px; }
a.screen p { margin: 0; color: var(--muted); font-size: 15px; }
a.screen .go { font: 700 22px/1 var(--display); color: var(--dim); transition: transform .2s, color .2s; }
a.screen:hover .go { color: var(--c); transform: translateX(4px); }
@media (max-width: 760px) { .screens { grid-template-columns: 1fr; } .screens a.screen:nth-child(odd) { border-right: 0; } .screens a.screen:nth-child(even) { padding-left: 0; } }

/* module sheet (index.html#module-<id>) */
body.noscroll { overflow: hidden; }
.modview { position: fixed; inset: 0; z-index: 20; background: rgba(4, 8, 9, .86); backdrop-filter: blur(4px); overflow-y: auto; padding: 32px 16px; }
.modview[hidden] { display: none; }
.sheet { max-width: 880px; margin: 0 auto; background: var(--panel); border: 1px solid var(--line2); border-top: 4px solid var(--c); border-radius: 6px; padding: 18px 32px 28px; }
.sheet .num { display: block; margin-top: 10px; font: 600 12px/1 var(--mono); color: var(--c); letter-spacing: .16em; text-transform: uppercase; }
.sheetTop { display: flex; justify-content: space-between; align-items: center; }
.sheetTop .back { color: var(--muted); font: 600 14px/1 var(--display); letter-spacing: .08em; text-transform: uppercase; }
.sheetTop .x { color: var(--muted); font-size: 28px; line-height: 1; padding: 0 4px; } .sheetTop .x:hover { color: var(--text); text-decoration: none; }
.sheet h2 { margin: 8px 0 10px; font-size: clamp(40px, 6vw, 64px); }
.sheet .lead { color: var(--muted); font-size: 17px; margin: 0 0 18px; }
.sheet .shot { margin: 0 0 8px; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; background: #000; }
.sheet .shot figcaption { font: 11px/1.4 var(--mono); color: var(--dim); padding: 8px 10px; border-top: 1px solid var(--line); background: var(--panel2); }
.sheet h3 { margin: 26px 0 8px; font-size: 22px; color: var(--c); }
.sheet ul { margin: 0; padding-left: 20px; font-size: 15px; } .sheet li { margin: 6px 0; } .sheet li b { color: #fff; }
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--line); font: 700 16px/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
@media (max-width: 600px) { .modview { padding: 0; } .sheet { border-radius: 0; min-height: 100%; padding: 14px 16px 24px; } }

/* principles + spec sheet */
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 36px; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.principles div { padding: 22px; border-right: 1px solid var(--line); background: var(--panel); }
.principles div:last-child { border-right: 0; }
.principles b { display: block; font: 700 21px/1.05 var(--display); text-transform: uppercase; margin-bottom: 8px; letter-spacing: .02em; }
.principles span { font-size: 14px; color: var(--muted); }
@media (max-width: 900px) { .principles { grid-template-columns: 1fr 1fr; } .principles div:nth-child(2) { border-right: 0; } .principles div:nth-child(-n+2) { border-bottom: 1px solid var(--line); } }
@media (max-width: 520px) { .principles { grid-template-columns: 1fr; } .principles div { border-right: 0; border-bottom: 1px solid var(--line); } }
.spec { width: 100%; border-collapse: collapse; margin-top: 8px; }
.spec th, .spec td { text-align: left; padding: 12px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec th { width: 34%; font: 500 12px/1.6 var(--mono); color: var(--dim); text-transform: uppercase; letter-spacing: .12em; padding-right: 16px; }
.spec td { color: var(--text); font-size: 15px; }
.doors { display: grid; gap: 10px; }
a.door { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 4px 16px; padding: 18px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; color: inherit; transition: border-color .2s; }
a.door:hover { text-decoration: none; border-color: var(--teal); }
a.door b { font: 700 22px/1 var(--display); text-transform: uppercase; letter-spacing: .03em; }
a.door span { grid-column: 1; font-size: 14px; color: var(--muted); }
a.door i { grid-row: 1 / 3; grid-column: 2; font: normal 700 24px/1 var(--display); color: var(--teal); }

/* updates */
details.rel { border-bottom: 1px solid var(--line); padding: 14px 0; }
details.rel summary { cursor: pointer; display: flex; align-items: baseline; gap: 14px; list-style: none; }
details.rel summary::-webkit-details-marker { display: none; }
details.rel summary b { font: 700 24px/1 var(--display); text-transform: uppercase; letter-spacing: .03em; }
details.rel summary .dim { font: 12px/1 var(--mono); }
details.rel summary::after { content: '+'; margin-left: auto; font: 700 22px/1 var(--display); color: var(--dim); }
details.rel[open] summary::after { content: '–'; }
details.rel ul { margin: 12px 0 4px; padding-left: 20px; color: var(--muted); font-size: 14px; columns: 2 380px; column-gap: 40px; }
details.rel li { margin: 0 0 6px; break-inside: avoid; }
.more-rel { margin-top: 16px; }

/* download */
.final { margin-top: 112px; padding: 72px 0; border-top: 1px solid var(--line); background: radial-gradient(800px 360px at 80% 0, rgba(212, 67, 47, .14), transparent), radial-gradient(700px 300px at 10% 100%, rgba(45, 212, 191, .10), transparent); }
.final h2 { font-size: clamp(48px, 7vw, 92px); }
.steps3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0; counter-reset: s; }
.steps3 div { counter-increment: s; border-top: 2px solid var(--teal); padding-top: 14px; color: var(--muted); }
.steps3 div::before { content: '0' counter(s); display: block; font: 600 12px/1 var(--mono); color: var(--teal); letter-spacing: .16em; margin-bottom: 8px; }
.steps3 b { color: var(--text); }
@media (max-width: 700px) { .steps3 { grid-template-columns: 1fr; } }

footer { border-top: 1px solid var(--line); padding: 28px 0 48px; color: var(--dim); font-size: 13px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 24px; align-items: center; }
footer .links { margin-left: auto; display: flex; gap: 18px; }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s, transform .7s; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ticker div { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .row { transition: none; }
}

/* --- inner pages (resources.html) --- */
.pagehead { padding: 56px 0 28px; border-bottom: 1px solid var(--line); }
.pagehead h1 { font-size: clamp(44px, 7vw, 80px); margin: 0 0 14px; }
.pagehead p { color: var(--muted); max-width: 820px; margin: 0; }
.bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 24px 0 16px; }
input[type=search] { flex: 1; min-width: 220px; background: var(--panel2); border: 1px solid var(--line2); color: var(--text); border-radius: 3px; padding: 10px 14px; font: 15px var(--body); }
input[type=search]:focus { outline: none; border-color: var(--teal); }
.chip { display: inline-block; font: 600 11px/1.7 var(--mono); padding: 0 7px; border-radius: 3px; border: 1px solid var(--line2); color: var(--muted); margin: 0 4px 4px 0; }
.chip.green { border-color: #0f5f4a; color: #6ee7b7; } .chip.amber { border-color: #7c4a12; color: #fcd34d; } .chip.sky { border-color: #0f4b63; color: #7dd3fc; } .chip.violet { border-color: #4c2d8a; color: #c4b5fd; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 10px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: 14px 16px; cursor: pointer; transition: border-color .2s; }
.card:hover { border-color: var(--teal); }
.card h3 { margin: 0 0 4px; font-size: 22px; } .card .id { color: var(--dim); font-family: var(--mono); font-size: 11px; }
.card p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.detail { background: var(--panel); border: 1px solid var(--line2); border-radius: 4px; padding: 20px; margin: 16px 0; }
.detail h2 { margin: 0 0 4px; font-size: 36px; } .detail .close { float: right; color: var(--muted); cursor: pointer; font: 600 13px var(--mono); }
/* The index's mod and list details: a popup over the page, scrolling inside when it is long. */
.modal { position: fixed; inset: 0; z-index: 50; background: rgba(0, 0, 0, .72); display: flex; align-items: flex-start; justify-content: center; padding: 6vh 16px; overflow-y: auto; }
.modal .detail { width: min(860px, 100%); margin: 0; box-shadow: 0 24px 80px rgba(0, 0, 0, .6); }
.modal .detail .close:hover { color: var(--text, #fff); }
body.modal-open { overflow: hidden; }
.issue { border: 1px solid var(--line); border-radius: 3px; padding: 10px 12px; margin: 8px 0; background: var(--panel2); font-size: 14px; }
.issue b { color: var(--text); } .issue .meta { color: var(--dim); font-size: 11px; font-family: var(--mono); } .issue .fix { color: var(--teal); font-size: 13px; }
.inner > h2, .inner section > h2 { font: 600 13px/1 var(--mono); text-transform: uppercase; letter-spacing: .16em; color: var(--teal); margin: 40px 0 12px; }
.empty { color: var(--dim); padding: 24px 0; text-align: center; }
table { width: 100%; border-collapse: collapse; font-size: 14px; } th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--dim); font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; }
ul.links { list-style: none; padding: 0; margin: 0; } ul.links li { padding: 12px 0; border-bottom: 1px solid var(--line); } ul.links span { color: var(--muted); }
ul.links a { font-weight: 600; }
.step .shot video { width: 100%; height: 100%; object-fit: contain; background: #000; }