:root{color-scheme:dark;--green:#12633c;--ink:#092d23;--gold:#ffdd65;--blue:#1685e7;--line:#38875a;font-family:'Trebuchet MS',Verdana,sans-serif;font-size:16px;color:#f5f8eb;background:var(--green)}*{box-sizing:border-box}body{margin:0;background:#12633c}button{font:inherit;cursor:pointer}button:focus-visible,#threeRoot:focus-visible{outline:3px solid #fff087;outline-offset:4px}button:disabled{opacity:.48;cursor:default}#app{max-width:1240px;margin:auto;padding:18px 24px 22px}header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}h1{margin:0;font:bold clamp(25px,3.5vw,46px)/1.2 monospace;letter-spacing:-2px;text-shadow:3px 3px 0 #052934}h1>span{color:#19a3f1}.badge{display:inline-block;background:#0a66c2;color:white;border:3px solid #082739;box-shadow:3px 3px 0 #062a34;padding:0 7px;font-family:Arial,sans-serif;letter-spacing:-1px}.square{border:0;background:transparent;color:#fff;font-size:32px;font-weight:bold;min-width:44px;min-height:44px;text-shadow:2px 2px #133529}.game-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:28px;align-items:start;max-width:1100px;margin:auto}.play-area{width:100%;max-width:780px;margin:auto}.board-heading{text-align:center;margin-bottom:13px}.board-heading h2{color:var(--gold);font:700 clamp(18px,2vw,25px)/1.25 monospace;margin:0 0 7px}.board-heading p{margin:0;color:#d1e8bf;font-size:17px}#gameShell{position:relative;border:3px solid #509566;box-shadow:0 5px 0 #073c2c;background:#197242;aspect-ratio:17/21}#threeRoot{width:100%;height:100%;touch-action:pan-y}canvas{display:block;width:100%;height:100%;image-rendering:pixelated}#loading{position:absolute;inset:0;display:grid;place-items:center;background:#12633c;padding:24px;text-align:center;font-size:20px;pointer-events:none}#loading[hidden]{display:none}#toast{position:absolute;left:12px;right:12px;bottom:12px;pointer-events:none;max-width:520px;margin:auto;background:#073525;color:#fff;border:2px solid #99c9a1;padding:12px 16px;text-align:center;opacity:0;transition:opacity .12s;font-size:16px}#toast.show{opacity:1}aside{padding-top:8px}.status{display:flex;gap:12px;align-items:center;border-bottom:2px solid var(--line);padding:12px 0 17px}.status>span{color:var(--gold);font-size:32px}.status strong{font-size:22px;color:var(--gold)}.status p{font-size:16px;line-height:1.4;color:#d5e9ca;margin:5px 0 0}.hud{display:grid;grid-template-columns:1fr 1fr;gap:18px 14px;margin:22px 0 14px}.hud>div,.hud>button{text-align:left}.hud span{display:block;font-size:15px;color:#d6eacb;margin-bottom:5px}.hud strong{display:block;font:700 30px/1.2 monospace;color:var(--gold)}.hud small{font-size:16px}.hud button{padding:0;border:0;background:transparent}.wall-meter{display:grid;grid-template-columns:repeat(16,1fr);gap:3px}.wall-meter i{height:12px;background:#0b432c;border:1px solid #82a889}.wall-meter i.used{background:#d4dbe1;border-color:white}.instruction{font-size:17px;line-height:1.6;margin:20px 0}.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.button{border:3px solid #071e30;background:#f0f2ed;color:#0b2540;box-shadow:0 4px 0 #062537;padding:12px 14px;min-height:48px;font-weight:bold;font-size:18px;border-radius:4px}.button:active{transform:translateY(2px);box-shadow:0 2px 0 #062537}.primary{background:#0a71d2;border-color:#062b50;color:white;box-shadow:inset 0 3px 0 #35a6f8,0 4px 0 #062537}.actions .primary{grid-column:1/-1}.route-button{border:0;background:transparent;color:#fff5bb;width:100%;padding:16px 0 12px;text-decoration:underline;text-underline-offset:4px;font-size:16px}.route-button[aria-pressed=true]{color:white}.legend{border-top:2px solid var(--line);margin-top:12px;padding-top:12px}.legend h3{font-size:17px;margin:4px 0 12px}.legend>div{display:flex;align-items:center;gap:10px;min-height:44px}.legend img{width:38px;height:38px;object-fit:contain;image-rendering:pixelated}.legend span{flex:1}.legend b{color:var(--gold)}.legend p{font-size:15px;color:#d0e6c5;display:flex;justify-content:space-between}.legend .wall-key{border-top:1px solid var(--line);padding-top:10px;font-size:14px}footer{text-align:center;font-size:14px;color:#bed7ad;line-height:1.6;margin-top:24px}footer small{font-size:12px}dialog{max-width:560px;width:calc(100% - 30px);max-height:90dvh;overflow:auto;background:#f5f5e9;color:#143f30;border:4px solid #062b29;border-radius:7px;padding:28px;box-shadow:7px 7px 0 #062a29}dialog::backdrop{background:#062919cc}dialog h2{font-size:28px;margin:6px 30px 20px 0}dialog p,dialog li{font-size:17px;line-height:1.55}dialog li{margin-bottom:12px}dialog ol{padding-left:22px}dialog>.square{position:absolute;right:10px;top:8px;color:#143f30;text-shadow:none}dialog>.button{display:block;width:100%;margin-top:14px}.muted{color:#4c685a}.result-badge{font-size:38px;float:none;width:60px;text-align:center;margin-bottom:15px}.result-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;text-align:center;margin:24px 0}.result-grid b{display:block;font-size:30px;color:#0a66c2;margin-top:6px}
/* Fit the complete working surface to the available viewport. */
:root{--app-height:100dvh}
#app{height:var(--app-height);max-width:1400px;padding:max(8px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(10px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));display:flex;flex-direction:column;gap:8px}
header{flex:0 0 auto;margin:0;min-height:44px}h1{font-size:clamp(24px,3vw,38px)}
.game-layout{flex:1;min-height:0;width:100%;max-width:1180px;grid-template-columns:minmax(0,1fr) 270px;gap:24px;align-items:stretch}
.play-area{height:100%;min-height:0;max-width:none;display:flex;flex-direction:column;align-items:center;margin:0;overflow:visible}
.board-heading{flex:none;margin:0 0 10px;text-align:center;width:100%}.board-heading h2{font-size:20px;margin:0 0 4px}.board-heading p{font-size:16px;line-height:20px}
#gameShell{flex:none;max-width:100%;aspect-ratio:auto;width:0;height:0}#threeRoot{position:absolute;inset:0;width:100%;height:100%}
aside{min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:0 5px 8px;scrollbar-width:thin}
.status{padding:5px 0 12px}.status strong{font-size:20px}.status p{font-size:15px}.hud{margin:15px 0 12px;gap:14px}.hud strong{font-size:28px}.instruction{font-size:16px;margin:14px 0;line-height:1.5}
.audio-controls{display:flex;gap:10px;margin-top:12px}.audio-controls button{flex:1;min-height:40px;padding:7px 8px;border:2px solid #8ab99a;background:#0d4b31;color:#f4f7e9;border-radius:4px;font-size:15px;font-weight:bold}.audio-controls button[aria-pressed=true]{color:#ffeb99;border-color:#d3c366}.audio-controls button[aria-pressed=false]{background:#193f31;color:#d5dfd2}
.route-button{padding:12px 0}.legend{margin-top:5px}.legend>div{min-height:38px}.legend img{width:32px;height:32px}footer{margin-top:14px}
@media(max-width:760px) and (orientation:portrait), (max-width:599px){
 #app{gap:4px;padding-left:max(8px,env(safe-area-inset-left));padding-right:max(8px,env(safe-area-inset-right))}
 header{gap:3px;min-height:40px}.square{font-size:26px;min-width:40px;min-height:40px}h1{font-size:clamp(20px,5.7vw,33px);letter-spacing:-1px}h1 .badge{border-width:2px;padding:0 4px}
 .game-layout{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(140px,1fr) auto;gap:8px}
 .board-heading{margin-bottom:6px}.board-heading h2{font-size:16px;line-height:20px;margin:0}.board-heading p{display:none}
 aside{overflow:visible;padding:0;display:grid;grid-template-columns:1fr;gap:6px}
 .status{border:0;padding:0;gap:6px;justify-content:center}.status>span{font-size:18px;line-height:20px}.status strong{font-size:15px;line-height:20px}.status p{display:none}
 .hud{grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;margin:0;text-align:center}.hud>div,.hud>button{text-align:center}.hud span{font-size:12px;margin-bottom:2px}.hud strong{font-size:22px;line-height:25px}.hud small{font-size:12px}
 .wall-meter,.instruction,.legend,aside>footer{display:none}
 .actions{grid-template-columns:1fr 1fr 2fr;gap:8px;position:static;padding:0}.actions .primary{grid-column:auto}.button{font-size:15px;min-height:42px;padding:8px 6px}
 .audio-controls{margin:2px 0 0;gap:8px}.audio-controls button{min-height:34px;padding:4px 8px;font-size:14px}
 .route-button{font-size:14px;min-height:28px;padding:2px 0}
 #toast{font-size:14px;left:6px;right:6px;bottom:6px;padding:8px;line-height:1.3}
 dialog{padding:20px;max-height:calc(var(--app-height) - 24px)}
}
@media(min-width:600px) and (orientation:landscape) and (max-height:600px){
 #app{gap:2px;padding-top:max(3px,env(safe-area-inset-top));padding-bottom:max(5px,env(safe-area-inset-bottom))}
 header{min-height:34px}header .square{min-height:34px;font-size:24px}h1{font-size:25px}
 .game-layout{grid-template-columns:minmax(0,1fr) 245px;gap:14px}
 .board-heading{margin-bottom:4px}.board-heading h2{font-size:16px;margin:0;line-height:20px}.board-heading p{display:none}
 .status{padding:0 0 6px}.status strong{font-size:16px}.status>span{font-size:22px}.status p{display:none}
 .hud{grid-template-columns:repeat(4,1fr);gap:4px;margin:8px 0}.hud span{font-size:12px}.hud strong{font-size:20px}.hud small{font-size:12px}
 .instruction,.wall-meter{display:none}.actions{grid-template-columns:1fr 1fr 2fr;gap:6px}.actions .primary{grid-column:auto}.button{font-size:14px;min-height:38px;padding:6px 4px}
 .audio-controls{margin-top:9px}.audio-controls button{min-height:34px;font-size:14px;padding:4px}.route-button{font-size:14px;padding:8px 0}
 .legend{margin-top:0}footer{display:none}
}

.linkedin-share{background:#0a66c2;color:white;border-color:#07345f;display:flex!important;justify-content:center;align-items:center;gap:10px}.share-in{font:bold 26px Arial;color:white}.share-status{font-size:15px;line-height:1.4;margin:12px 0;color:#315c42}#shareTools{border-top:1px solid #adc1aa;padding-top:10px}#shareTools summary{cursor:pointer;font-weight:bold;min-height:36px;padding:6px 0}#sharePreview{display:block;width:100%;height:auto;margin:12px 0;border:1px solid #426c4c}#sharePreview[hidden]{display:none}#shareTools label{display:block;font-size:15px;margin:12px 0 6px}#shareText{box-sizing:border-box;width:100%;background:#fff;color:#133d2e;border:1px solid #809c81;border-radius:3px;font:15px/1.5 Arial,sans-serif;padding:10px;resize:vertical}.share-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.share-actions .button{flex:1;font-size:15px;min-width:125px}#shareTools p{font-size:14px;line-height:1.5}



/* A large pannable world inside the available viewport. */
#gameShell{overflow:hidden;aspect-ratio:auto;min-width:0}#threeRoot{touch-action:none;cursor:grab;overscroll-behavior:contain;user-select:none;-webkit-user-select:none}#threeRoot.dragging{cursor:grabbing}
.board-toolbar{display:flex;align-items:center;gap:6px;width:100%;margin:0 0 8px;flex:none}.board-toolbar button{min-height:36px;border:2px solid #85b18e;border-radius:4px;background:#0d4b31;color:white;font-weight:bold;padding:5px 12px;font-size:14px}.board-toolbar button[aria-pressed=true]{color:#ffeb99;border-color:#d3c366}#newBoardQuickBtn{margin-left:auto;background:#0a66c2}
@media(max-width:599px){.board-toolbar{gap:4px}.board-toolbar button{padding:4px 9px;min-height:32px}}