:root{color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:14px;background:#000;color:#fff}*{box-sizing:border-box}body{margin:0}main{max-width:1040px;margin:auto;padding:28px}header{display:flex;align-items:center;gap:26px;margin-bottom:24px}header img{width:160px;height:160px;object-fit:contain}h1{font-size:24px;letter-spacing:.02em;margin:0 0 12px}p{line-height:1.5;color:#a8aeb8}.accent{color:#ffc000;font-size:20px;margin:0}button,input,textarea{font:inherit}button{cursor:pointer;border:1px solid #535760;background:#282c33;color:#fff;padding:11px 16px;border-radius:7px;font-weight:600;min-height:42px}button:hover{filter:brightness(1.15)}button:active{transform:scale(.985)}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid #ffc000;outline-offset:2px}button:disabled{opacity:.45;cursor:default}button.gold{background:#ffc000;border-color:#ffc000;color:#14161a}.wide{width:100%;margin-bottom:16px}.source{background:#191c21;padding:14px;border-radius:7px;margin-bottom:20px;overflow-wrap:anywhere}.source small{color:#a8aeb8;display:block;margin:4px 0}.source #source{margin:8px 0}fieldset{border:0;padding:0;margin:0;min-width:0}label{display:block;color:#c2c6ce;margin-bottom:7px}input,textarea{display:block;background:#191c21;border:1px solid #555963;color:#fff;padding:9px;border-radius:5px;width:100%;margin:0 0 16px}textarea{resize:vertical;min-height:70px}section{margin-bottom:22px}.metadata{display:grid;grid-template-columns:1fr 160px;gap:24px}.thumb{width:160px;height:160px;object-fit:contain;background:#191c21}.metadata button{width:100%}.hint{font-size:12px;line-height:1.5;margin:8px 0 16px}#count{width:90px}#books{display:flex;flex-wrap:wrap;gap:12px}.book{width:214px;background:#191c21;border:1px solid #b7bbc2;border-radius:7px;padding:12px}.book h3{font-size:15px;margin:0 0 14px}.book label{font-size:12px}.book input{margin-bottom:12px}.book button{width:100%;margin-bottom:10px}.book img{display:block;width:100%;aspect-ratio:297/210;object-fit:contain;background:#14161a;margin-bottom:10px}.book .pdf-name{font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#bcc1c9;margin:0 0 12px}.credits{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}.browse{display:flex;gap:12px;align-items:start}.browse input{flex:1;min-width:0}.browse button{flex:none}#status{overflow-wrap:anywhere}progress{width:100%;accent-color:#ffc000}footer{color:#747b87;font-size:11px;margin:20px 0}dialog{width:min(740px,90vw);max-height:85vh;border:1px solid #555;border-radius:12px;background:#191c21;color:#fff;padding:24px}dialog::backdrop{background:#0009}dialog pre{white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.6 -apple-system,sans-serif;max-height:58vh;overflow:auto}dialog button{float:right;min-width:100px}

/* Match the desktop converter while leaving room for four booklet cards. */
main{max-width:1000px;padding:24px}header img{width:156px;height:156px}header h1{font-size:24px}header p{max-width:680px}header a{flex:none}
.instruction-style{display:grid;grid-template-columns:42fr 34fr 24fr;gap:16px;align-items:start}.check{display:flex;align-items:center;gap:8px;font-size:13px;color:#fff}.check input{width:auto;margin:0;accent-color:#ffc000}.instruction-style button{width:100%}#backgroundPreview{width:100%;height:144px;object-fit:contain;background:#191c21}.book{width:calc((100% - 36px)/4);max-width:229px;min-width:205px}.legal-footer{border-top:1px solid #555;margin-top:32px;padding-top:16px;font:12px/1.6 Arial,sans-serif;color:#aaa;text-align:center}.legal-footer a{color:inherit}.download{display:block;padding:14px;text-align:center;border:1px solid #ffc000;border-radius:7px;color:#ffc000}.download[hidden]{display:none}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}input[readonly]{color:#a8aeb8}progress[hidden]{display:none}
@media(max-width:760px){main{padding:16px}.instruction-style{grid-template-columns:1fr 1fr}.book{width:calc((100% - 12px)/2);min-width:0;max-width:none}header img{width:110px;height:110px}header h1{font-size:20px}.credits{grid-template-columns:1fr}.metadata{grid-template-columns:1fr 120px}.thumb{width:120px;height:120px}}

/* Preview boundaries remain visible before and after image selection. */
.thumb,.book img,#backgroundPreview{border:1px solid #747b87;border-radius:5px}
.download small{display:block;margin-top:5px;font-size:11px;font-weight:400;color:#a8aeb8}

/* Keep the header fixed in the document flow as the editor expands. */
main{min-height:100vh;min-height:100svh;display:flex;flex-direction:column}
[hidden]{display:none!important}
.legal-footer{margin-top:auto;padding-top:16px}
#form{margin-bottom:20px}
.welcome{max-width:760px;margin:0;color:#a8aeb8;line-height:1.65}
.piece-count{display:flex;align-items:center;gap:20px}.piece-controls{display:flex;gap:10px;align-items:start}.piece-controls input{width:145px;margin:0}.piece-count .hint{max-width:470px;margin:24px 0 0}#pieceCount:disabled{color:#858b95;background:#15171b}
@media(max-width:760px){.piece-count{flex-wrap:wrap;gap:6px}.piece-count .hint{margin:0}}

/* MOC Step: accessible portrait information sheets. */
.info-button{display:grid;place-items:center;width:var(--nav-w);height:var(--nav-w);padding:0;border:0;border-radius:50%;background:#fff;color:#101112;font:900 calc(var(--nav-w)*.68)/1 Georgia,'Courier New',serif;font-family:'Courier New',monospace;box-shadow:0 2px 6px #0003}
.info-button:hover{background:#ededed}
#app-info{position:fixed;right:max(14px,env(safe-area-inset-right));top:max(12px,env(safe-area-inset-top));z-index:22;min-height:0;font-size:calc(var(--nav-w)*.68)}
header #model-info{position:absolute;right:calc(var(--nav-w) + 12px);top:0;display:none}
.booklet-selection header #model-info{display:grid}
:is(#info-dialog,#changelog-dialog,#reposition-dialog){width:min(460px,calc(100vw - 32px));height:min(760px,calc(100dvh - 32px));max-height:calc(100dvh - 32px);max-width:calc(100vw - 32px);padding:28px 24px;border:1px solid #ffffff35;border-radius:22px;background:#202326;color:#fff;box-shadow:0 20px 80px #0009;overflow:hidden}
:is(#info-dialog,#changelog-dialog,#reposition-dialog)[open]{display:flex;flex-direction:column;gap:18px}
:is(#info-dialog,#changelog-dialog,#reposition-dialog)::backdrop{background:#000a}
:is(#info-title,#changelog-title,#reposition-title){font-size:22px;margin:0;padding:4px 44px 8px 0;flex-shrink:0}
:is(#info-content,.changelog-content){white-space:pre-wrap;overflow-wrap:anywhere;overflow:auto;overscroll-behavior:contain;touch-action:pan-y;font:14px/1.6 Segoe UI,Arial,sans-serif;min-height:0;padding-right:6px}
.info-close{position:absolute;top:14px;right:14px;width:36px;height:36px;display:grid;place-items:center;padding:0;border:0;border-radius:50%;background:#fff;color:#111;font:28px/1 Arial,sans-serif}
.info-close:hover{background:#e5e5e5}
@media(orientation:landscape) and (max-height:600px){:is(#info-dialog,#changelog-dialog,#reposition-dialog){width:min(390px,calc(100vw - 32px));padding:20px}:is(#info-title,#changelog-title,#reposition-title){font-size:19px}:is(#info-content,.changelog-content){font-size:13px}}
@media(orientation:portrait) and (max-width:650px){:is(#info-dialog,#changelog-dialog,#reposition-dialog){width:calc(100vw - 24px);height:calc(100dvh - 32px)}}

:root{--nav-w:66px;--control-scrollbar:8px;--control-right:calc(max(14px,env(safe-area-inset-right)) + var(--control-scrollbar))}
#converter-info{position:fixed;top:max(12px,env(safe-area-inset-top));right:var(--control-right);z-index:10;min-height:0}
header{padding-right:80px}:is(#info-content,.changelog-content) a{color:inherit;text-decoration:underline;text-underline-offset:3px}
@media(orientation:landscape) and (max-height:540px){:root{--nav-w:52px}}
@media(orientation:portrait) and (max-width:650px){:root{--nav-w:40px}header{padding-right:48px}}
:is(#info-dialog,#changelog-dialog,#reposition-dialog) .info-close{min-width:0;min-height:0;float:none}

#texture-cards{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;margin:12px 0 28px}.texture-card{min-width:0;border:1px solid #555;border-radius:12px;padding:10px;background:#17191c}.texture-card img{display:block;width:100%;aspect-ratio:1;object-fit:contain;border:1px solid #555;border-radius:6px}.texture-card input[type=text]{width:100%;min-width:0}.sticker-toggle{display:flex;align-items:center;gap:6px;margin:10px 0;font-size:12px}.sticker-toggle input{width:auto;margin:0;accent-color:#ffc431}@media(max-width:850px){#texture-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:450px){#texture-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* 1.22: shared charcoal surfaces and grouped editing. */
:root{background:#191b1d;font-family:"Segoe UI",Arial,sans-serif}
body{min-height:100vh;background:radial-gradient(ellipse at 4% 30%,#292d30 0,transparent 48%),#191b1d;background-repeat:no-repeat}
#converter-info{background:transparent;color:#fff;border:1px solid #ffffff30;border-top-color:#ffffff48;box-shadow:0 3px 9px #0004}
#converter-info:hover{background:#ffffff09;filter:none;border-color:#ffffff60}
header>div{flex:1;min-width:0}.title-row{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.title-row h1{margin:0 0 12px}
.release{display:flex;align-items:flex-end;flex-direction:column;gap:7px;flex:none;color:#aaa;font-size:13px}.release button{font-size:12px;min-height:30px;padding:5px 10px}
.editor-section{border:1px solid #ffffff30;border-top-color:#ffffff48;border-radius:16px;background:transparent;padding:22px;margin:0 0 22px}
.editor-section>h2{font:600 19px/1.3 Arial,sans-serif;margin:0 0 22px;color:#fff}
.metadata{grid-template-columns:minmax(0,1fr) 200px;gap:28px;margin-bottom:22px}.thumbnail-field{width:200px;justify-self:end}
#thumbnail{display:block;position:relative;width:200px;height:200px;padding:0;overflow:hidden;background:#191c21;border:1px solid #747b87;border-radius:8px}
#thumbnail .thumb{display:block;width:100%;height:100%;object-fit:cover;border:0;border-radius:0}
#thumbnail-placeholder{position:absolute;inset:0;display:grid;place-items:center;color:#aaa;font-size:13px;pointer-events:none}
.metadata input{margin-bottom:0}.metadata .hint{margin:8px 0 20px}.credits{margin:0}.credits label{margin-bottom:0}.credits input{margin-top:7px}
.changelog-content{white-space:normal!important}.changelog-content h3{color:#ffc000;margin:0 0 12px}.changelog-content ul{padding-left:20px;margin:0 0 26px}.changelog-content li{margin-bottom:12px}
@media(max-width:600px){header{gap:14px}header img{width:72px;height:72px}.title-row{gap:10px}header h1{font-size:17px}.editor-section{padding:16px}.metadata{grid-template-columns:minmax(0,1fr) 150px;gap:16px}.thumbnail-field,#thumbnail{width:150px}#thumbnail{height:150px}.piece-controls{flex-wrap:wrap}.piece-controls input{width:100%}}
@media(max-width:420px){header{flex-wrap:wrap}header>div{flex-basis:100%}.metadata{grid-template-columns:1fr}.thumbnail-field{justify-self:end}.instruction-style{grid-template-columns:1fr}}

/* Full-width release alignment; reserve a separate lane for the floating info button. */
header{padding-right:0}
@media(max-width:1160px){header{padding-top:calc(var(--nav-w) + 8px)}}
.preview-label{font:11px Arial,sans-serif;color:#aaa;border:1px solid #555;border-radius:6px;padding:4px 7px;margin-left:8px;white-space:nowrap}
.advanced-controls{display:grid;grid-template-columns:1fr 1fr;gap:16px 24px}
.advanced-controls select{width:100%;min-width:0;background:#191c21;color:#bbb;border:1px solid #555963;border-radius:5px;padding:9px;font:inherit}
.advanced-controls input:disabled{opacity:.65}.advanced-controls .hint{margin-bottom:0}
@media(max-width:600px){.advanced-controls{grid-template-columns:1fr}}

/* Repositioning prototype: group selection changes presentation only. */
.metadata .piece-controls{justify-content:flex-start;align-items:center;flex-wrap:nowrap}
.metadata .piece-controls input{width:145px;min-width:0;flex:0 1 145px}
.metadata .piece-controls #overridePieceCount{width:auto;flex:0 0 auto;min-height:38px;padding:8px 12px}
.selection-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:16px 0 12px;color:#c2c6ce}
#reposition-chips{display:flex;flex-wrap:wrap;gap:8px}
.reposition-chip{display:inline-flex;align-items:center;gap:12px;background:#ffc00014;border:1px solid #ffc00070;border-radius:8px;padding:7px 10px;color:#fff;font-size:12px;min-height:34px}
.reposition-chip span:last-child{color:#ffc000;font-size:18px;line-height:1}
#reposition-selection:disabled{opacity:.45}
.reposition-content{overflow:auto;min-height:0;overscroll-behavior:contain}
.reposition-option{display:flex;align-items:flex-start;gap:12px;border:1px solid #ffffff30;border-radius:10px;padding:13px;margin:0 0 10px;cursor:pointer}
.reposition-option:has(input:checked){border-color:#ffc000;background:#ffc0000d}
.reposition-option input{width:auto;flex:none;margin:3px 0 0;accent-color:#ffc000}
.reposition-option strong{display:block;color:#fff;font-size:14px}
.reposition-option small{display:block;font-size:12px;line-height:1.5;color:#aaa;margin-top:5px}
#reposition-dialog #reposition-done{flex:none;float:none;align-self:flex-end}
/* Actual buffer-exchange occurrence review, scoped to the preview section. */
.buffer-table-wrap{max-height:430px;overflow:auto;border:1px solid #ffffff30;border-radius:10px;margin-top:12px}
.buffer-table{border-collapse:collapse;width:100%;font-size:13px;text-align:left;min-width:650px}
.buffer-table th{background:#202326;color:#aaa;position:sticky;top:0;z-index:1;font-weight:600}
.buffer-table td,.buffer-table th{padding:12px 10px;border-bottom:1px solid #ffffff20;vertical-align:top}
.buffer-table td:first-child{width:44px}.buffer-table input{width:17px;height:17px;margin:2px 0;accent-color:#ffc000}
.buffer-table strong{display:block;font-weight:600}.buffer-table small{display:block;color:#aaa;font-size:11px;margin-top:4px}
.buffer-colour{display:inline-block;width:12px;height:12px;border:1px solid #888;border-radius:50%;margin-right:6px;vertical-align:middle}

/* Compact section help: readable on hover, keyboard focus and touch. */
.section-help{display:inline-block;vertical-align:middle;margin-left:8px;line-height:1}
.section-info{display:inline-grid;place-items:center;min-height:0;width:18px;height:18px;border:0;border-radius:50%;padding:0;background:#fff;color:#101112;font:900 14px/1 'Courier New',monospace;box-shadow:0 2px 5px #0003;vertical-align:middle}
.section-info:hover{filter:none;background:#f0f0f0}
.section-tooltip{position:fixed;z-index:40;width:min(340px,calc(100vw - 24px));max-height:calc(100dvh - 24px);overflow:auto;border:1px solid #ffffff35;border-radius:12px;padding:13px 15px;background:#202326;color:#eee;font:400 13px/1.55 'Segoe UI',Arial,sans-serif;box-shadow:0 8px 28px #0007;white-space:normal;text-align:left}
.sticker-cleanup{align-items:flex-start;line-height:1.5}.sticker-cleanup input{margin-top:3px;flex:none}

.geometry-options{margin-top:28px;padding-top:18px;border-top:1px solid #ffffff24}
.geometry-levels{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));gap:16px}
.geometry-levels select{box-sizing:border-box;width:100%;min-height:42px;padding:9px 12px;border:1px solid #ffffff44;border-radius:9px;background:#25272a;color:#fff;font:inherit}
.geometry-levels select:disabled{opacity:.45}
.geometry-levels label{display:block;margin-bottom:8px}

/* Part corrections: full-width controls remain readable on small screens. */
.hose-card{padding:16px;border:1px solid #ffffff30;border-radius:12px;margin:12px 0}.hose-card h4{margin:0;overflow-wrap:anywhere}.hose-card select{width:100%;max-width:100%;margin-top:8px}.hose-card .hint{overflow-wrap:anywhere}