:root{--ink:#073d48;--teal:#007d86;--orange:#ff710b;--paper:#faf7ef;--line:#e4e8e4}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at top,#fff,var(--paper));color:var(--ink);font:16px/1.55 system-ui,-apple-system,Segoe UI,sans-serif}header{max-width:1440px;margin:auto;padding:24px 32px;display:flex;justify-content:space-between;align-items:center;gap:16px}.brand{font-size:34px;font-weight:850;text-decoration:none;display:flex;gap:12px;align-items:center}.orange{color:var(--orange)}nav{display:flex;align-items:center;gap:24px;flex-wrap:wrap}a{color:var(--teal)}nav a{text-decoration:none;font-weight:650}main{max-width:1440px;margin:auto;padding:0 32px}h1{font-size:clamp(26px,3vw,40px);letter-spacing:-1px;margin:0 0 10px}h2{font-size:24px;margin:0 0 16px}p{margin:0 0 16px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:800;color:var(--teal)}.page-title{display:flex;justify-content:space-between;align-items:center;margin:20px 0 24px;gap:20px}.pill{background:#fff0d5;border-radius:20px;padding:6px 14px;font-size:13px;font-weight:650}.card{background:#ffffffdc;border:1px solid white;border-radius:24px;box-shadow:0 10px 36px #123e4510;padding:24px}.game-layout{display:grid;grid-template-columns:minmax(0,2.15fr) minmax(290px,1fr);gap:24px}.card-title{display:flex;justify-content:space-between;align-items:center}.play-area{display:grid;grid-template-columns:190px minmax(0,1fr);gap:24px}.controls{display:flex;flex-direction:column;gap:12px}.metric{padding:14px 18px;border-radius:14px;background:linear-gradient(100deg,#fff2dd,#f2f7f4)}.metric span{display:block;font-size:13px}.metric strong{display:block;font-size:28px;line-height:1.2;font-variant-numeric:tabular-nums}button{font:inherit;font-weight:700;border:0;border-radius:12px;padding:12px 18px;cursor:pointer;background:linear-gradient(110deg,#ff8a16,#ff5f00);color:white;transition:opacity .15s,transform .15s}button:hover{filter:brightness(.96)}button:active{transform:translateY(1px)}button:disabled{opacity:.45;cursor:default}.ghost{background:transparent;border:1px solid var(--teal);color:var(--ink)}.small{padding:7px 12px;font-size:13px}.hint-box{background:#fff0db;padding:12px;border-radius:16px;font-size:12px}.hint-box button{width:100%;padding:10px}.hint-box span,.hint-box small{display:block;margin-top:8px}.board-wrap{align-self:center;min-width:0}.board{position:relative;display:grid;grid-template-columns:repeat(var(--n,4),1fr);aspect-ratio:1;border:1px solid var(--line);border-radius:16px;overflow:hidden;touch-action:none;user-select:none;background:#fbfaf5;outline-offset:4px}.cell{position:relative;padding:0;border:1px solid var(--line);border-radius:0;aspect-ratio:1;background:transparent;display:flex;align-items:center;justify-content:center;z-index:auto}.cell:hover{background:#e9f4f2}.cell.visited{background:#d7efeb}.cell.current{background:#ffe0ae;box-shadow:inset 0 0 0 3px var(--orange)}.cell .number{position:relative;background:var(--ink);color:#fff;border-radius:50%;width:68%;aspect-ratio:1;max-width:50px;display:flex;align-items:center;justify-content:center;font-size:clamp(13px,2vw,23px);font-weight:750;z-index:3}.cell.visited .number{background:var(--teal)}.route-svg{position:absolute;inset:0;width:100%;height:100%;z-index:2;pointer-events:none}.board-help{font-size:12px;opacity:.75;margin:12px 0 0}#status{margin-top:20px;padding:12px;background:#f1f7f4;border-radius:12px;font-size:14px}#victory{margin-top:18px;padding:24px;background:#e0f4e9;border-radius:16px}.tabs{display:flex;gap:6px;margin:14px 0}.tabs button{flex:1;padding:9px 8px;font-size:13px;background:#f0f3f0;color:var(--ink)}.tabs .active{background:var(--teal);color:white}table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}th{text-align:left;font-size:12px;color:#6e8587}td,th{padding:11px 5px;border-bottom:1px solid #edf0ec}td:last-child,th:last-child{text-align:right;font-variant-numeric:tabular-nums}tbody tr:first-child{color:#bd6200;font-weight:750}td:nth-child(2){overflow-wrap:anywhere}#more{width:100%}small{font-size:12px;color:#59757b}.levels{margin:24px 0;display:flex;gap:24px;align-items:center;justify-content:space-between;font-size:14px}.levels label{display:flex;align-items:center;gap:10px}input,select{border:1px solid #ccd9d7;background:#fff;border-radius:10px;padding:12px;color:var(--ink);font:inherit;width:100%}select{width:auto}input:focus,select:focus{outline:2px solid #62b9b4;outline-offset:1px}.auth{max-width:470px;margin:40px auto;padding:36px}.auth h1{font-size:30px}.auth label{display:block;margin:16px 0;font-size:14px;font-weight:650}.auth input{display:block;margin-top:6px}.auth small{display:block;margin-top:8px;font-weight:400}.auth button{width:100%;margin:6px 0}.auth-links{display:flex;justify-content:space-between;margin:20px 0;font-size:14px}.auth>a{display:inline-block;margin:16px 12px 0 0;font-size:14px}.validation{color:#b13b24;font-size:14px}.validation ul{padding-left:20px}.notice{padding:16px;border-radius:12px;background:#e1f1e8;margin-top:20px}footer{text-align:center;margin:40px 20px;font-size:12px;color:#658184}#token{display:none}#speedLevelLabel input{max-width:100px;margin-left:8px}
@media(max-width:1080px){.game-layout{grid-template-columns:1fr}.play-area{grid-template-columns:180px minmax(0,1fr)}#leaders{max-width:none}.levels{flex-wrap:wrap}}@media(max-width:600px){header{padding:18px;align-items:flex-start}.brand{font-size:27px}nav{gap:10px;font-size:12px;justify-content:flex-end}nav span{max-width:100px;overflow:hidden}main{padding:0 12px}.page-title{display:block}.page-title .pill{display:inline-block;margin-top:8px}.card{padding:18px;border-radius:18px}.play-area{display:flex;flex-direction:column-reverse;gap:16px}.controls{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.metric{padding:10px}.metric strong{font-size:21px}.metric span{font-size:11px}.controls>button{font-size:12px;padding:10px 5px}.hint-box{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:4px 14px}.hint-box small{grid-column:1/-1}.cell .number{font-size:20px}.levels{gap:14px}.auth{margin:24px auto;padding:24px}.page-title h1{font-size:28px}.board-wrap{width:100%}}

/* v2: separate metrics / table / actions for consistent mobile ordering. */
[hidden]{display:none!important}
.play-area{display:grid;grid-template-columns:190px minmax(0,1fr);grid-template-rows:auto 1fr;grid-template-areas:"metrics board" "actions board";gap:16px 24px;align-items:start}
.metrics{grid-area:metrics;display:flex;flex-direction:column;gap:12px}
.actions{grid-area:actions;display:flex;flex-direction:column;gap:10px}
.board-section{grid-area:board;min-width:0}
.board-stage{position:relative;width:100%;aspect-ratio:1;border-radius:16px;overflow:hidden;background:#f4f7f0;isolation:isolate}
.board-window{width:100%;height:100%;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin}
.board{width:100%;min-width:calc(var(--n,4)*28px);border-radius:0;touch-action:pan-x pan-y}
.board.draw-touch{touch-action:none}
.cell .number{font-size:clamp(11px,calc(36vw / var(--n,4)),24px);min-width:19px}
.table-overlay{position:absolute;inset:0;z-index:10;background:#fffdf8f5;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:20px;gap:12px;overflow:auto}
.table-overlay h2{margin:0;font-size:clamp(21px,2.2vw,30px)}
.table-overlay p{font-size:13px;max-width:360px;margin:0}
.overlay-icon{color:var(--orange);font-size:36px;line-height:1}
.player-identity{display:flex;flex-direction:column}
.player-identity strong{font-size:18px;overflow-wrap:anywhere}
.player-identity span{font-size:12px;color:#6b8586;overflow-wrap:anywhere}
.player-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:100%;max-width:380px;gap:6px;background:#ecf4ef;border-radius:14px;padding:12px 6px}
.player-stats div{min-width:0;display:flex;flex-direction:column;gap:4px}
.player-stats span{font-size:10px;color:#577478}
.player-stats strong{font-size:17px;overflow-wrap:anywhere}
.overlay-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.overlay-actions button{padding:10px 16px;font-size:13px}
.countdown-box{font-size:12px;padding:8px 12px;border-radius:20px;background:#ffe5bb}
.countdown-box strong{font-size:20px;color:#b54e00;margin:0 5px}
.board-stage[data-mode="paused"] .board-window,.board-stage[data-mode="ready"] .board-window{visibility:hidden}
.board-stage[data-mode="complete"] .board-window{filter:blur(1.5px)}
.board-stage[data-mode="playing"] .table-overlay{display:none}
#result{font-weight:750;color:var(--teal)}
.status-error{background:#ffeae1!important;color:#a23c14}
@media(max-width:700px){
 .play-area{grid-template-columns:minmax(0,1fr);grid-template-rows:auto auto auto;grid-template-areas:"metrics" "board" "actions";gap:16px}
 .metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
 .metric{padding:10px 8px;min-width:0}
 .metric span{font-size:11px}.metric strong{font-size:21px;overflow-wrap:anywhere}
 .actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
 .actions>button{padding:11px 7px;font-size:12px}
 .hint-box{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:4px 12px}
 .hint-box small{grid-column:1/-1}
 .table-overlay{gap:9px;padding:14px}
 .overlay-icon{font-size:28px}
 .table-overlay h2{font-size:22px}.table-overlay p{font-size:12px}
 .player-identity strong{font-size:16px}.player-stats{padding:8px 4px}
 .player-stats strong{font-size:15px}.player-stats span{font-size:9px}
 .overlay-actions button{padding:9px 13px;font-size:12px}
 .board-help{font-size:11px}
}
@media(max-width:370px){.table-overlay{gap:5px;padding:8px}.overlay-icon{display:none}.table-overlay h2{font-size:20px}.countdown-box{padding:4px 8px}.player-stats{padding:6px 2px}}
/* Start a touch drag on a number/current cell; pan empty cells to scroll Prof. tables. */
.cell.current,.cell .number{touch-action:none}
.leader-icon{width:25px;height:25px;vertical-align:-4px;stroke:var(--orange);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:700px){.metric strong{font-size:clamp(15px,4.4vw,19px);white-space:nowrap;overflow-wrap:normal;letter-spacing:-.5px}}

.game-layout,.game-layout>*,.play-area,.board-section,.board-stage{min-width:0}
.board-window{overflow:hidden;touch-action:none}
.board{width:100%;min-width:0;height:100%;grid-template-columns:repeat(var(--n,4),minmax(0,1fr));grid-template-rows:repeat(var(--n,4),minmax(0,1fr));touch-action:none}
.cell{min-width:0;min-height:0;aspect-ratio:auto}
.cell .number{min-width:0;padding:0 1px;font-size:clamp(7px,calc(36vw / var(--n,4)),24px);line-height:1}