/* PractOrio — lightweight CSS 3D cube puzzle. */
.game-intro{max-width:750px}
.game-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);gap:20px;align-items:start;margin-bottom:25px}
.game-card{background:linear-gradient(155deg,#132a37,#0b1f2c);border:1px solid #2e4e5e;border-radius:21px;padding:20px;min-width:0}
.cube-stats{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:9px;margin-bottom:10px}
.cube-stat{background:#0e2631;border:1px solid #2d4c55;border-radius:12px;padding:10px 12px;min-width:0}
.cube-stat small{display:block;color:#8daeb5;font-size:11px}
.cube-stat strong{display:block;font-size:22px;line-height:1.45;font-variant-numeric:tabular-nums}
.cube-stat:last-child strong{font-size:15px;color:#b4f17e;margin-top:4px}
.cube-stat strong[data-solved=false]{color:#ffb876}
.cube-scene{--cube-size:226px;--cube-half:113px;position:relative;display:flex;align-items:center;justify-content:center;height:365px;perspective:980px;perspective-origin:center 44%;touch-action:none;cursor:grab;user-select:none;overflow:hidden;border-radius:18px;background:radial-gradient(ellipse at 47% 42%,#23454c 0%,#102938 42%,#0b1f2c 77%)}
.cube-scene::before{content:"";position:absolute;inset:0;background-image:linear-gradient(#a6c5ca10 1px,transparent 1px),linear-gradient(90deg,#a6c5ca10 1px,transparent 1px);background-size:26px 26px;mask-image:linear-gradient(transparent,#000 55%,transparent);pointer-events:none}
.cube-scene:active{cursor:grabbing}
.rubik-cube{width:var(--cube-size);height:var(--cube-size);position:relative;transform-style:preserve-3d;will-change:transform}
.cube-face{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);gap:4px;padding:6px;position:absolute;inset:0;box-sizing:border-box;border:3px solid #070f17;border-radius:10px;background:#0c141e;backface-visibility:hidden;transform-style:preserve-3d}
.cube-sticker{border-radius:7px;border:1px solid #ffffff16;box-shadow:inset 0 1px 3px #ffffff44,inset 0 -5px 8px #0002}
.cube-sticker[data-color=F]{background:#17b76b}
.cube-sticker[data-color=B]{background:#2869eb}
.cube-sticker[data-color=U]{background:#f4f8f7}
.cube-sticker[data-color=D]{background:#ffdc53}
.cube-sticker[data-color=R]{background:#ed5550}
.cube-sticker[data-color=L]{background:#ff982e}
.cube-face-F{transform:translateZ(var(--cube-half))}
.cube-face-B{transform:rotateY(180deg) translateZ(var(--cube-half))}
.cube-face-R{transform:rotateY(90deg) translateZ(var(--cube-half))}
.cube-face-L{transform:rotateY(-90deg) translateZ(var(--cube-half))}
.cube-face-U{transform:rotateX(90deg) translateZ(var(--cube-half))}
.cube-face-D{transform:rotateX(-90deg) translateZ(var(--cube-half))}
.cube-help{margin:10px 0 0;text-align:center;color:#a9c5c7;font-size:12px;min-height:24px}
.game-action-row{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:16px}
.game-action-row button{flex:1;min-width:115px;padding:11px 12px}
.game-action-row button:disabled{opacity:.4}
.cube-move-label{display:block;margin:18px 0 12px;font-size:12px;color:#89b6af;letter-spacing:.09em;text-transform:uppercase;font-weight:850}
.cube-moves{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px}
.cube-moves button{background:#1a3543;border:1px solid #446574;color:#e8f5f5;border-radius:11px;min-height:48px;padding:7px 4px;font-size:15px;font-weight:800}
.cube-moves button:nth-child(2n){color:#b9f19c}
.cube-moves button:hover:not(:disabled),.cube-moves button:focus-visible{background:#31584b;border-color:#b4f17e;outline:2px solid transparent}
.cube-moves button:disabled{opacity:.4}
.cube-legend{display:flex;gap:8px;flex-wrap:wrap;margin:15px 0}
.cube-legend span{display:inline-flex;align-items:center;gap:5px;padding:5px 8px;background:#102936;border:1px solid #294553;border-radius:8px;font-size:12px;color:#d8e9e8}
.cube-legend b{display:inline-block;width:12px;height:12px;border-radius:3px;background:var(--c)}
.cube-notation{display:flex;flex-wrap:wrap;gap:6px;min-height:44px;align-content:flex-start}
.cube-move-token{background:#1c3c47;color:#d9efef;border-radius:6px;font-size:12px;font-weight:850;padding:5px 8px;font-family:ui-monospace,Menlo,monospace}
.cube-note{font-size:13px;color:#a8bdc3;margin-top:12px}
.cube-action-secondary{background:#153341;color:#edf5f3;border:1px solid #486776}
.cube-action-secondary:hover{background:#254b50}
.cube-action-quiet{background:transparent;color:#d2e6e5;border:1px solid #345a65}
.cube-action-quiet:hover{background:#1c3b49}
@media(max-width:900px){.game-grid{grid-template-columns:1fr}.cube-scene{height:350px}}
@media(max-width:580px){.game-card{padding:15px}.cube-scene{--cube-size:196px;--cube-half:98px;height:315px}.cube-stats{grid-template-columns:1fr 1fr 1.25fr}.cube-stat{padding:9px 7px}.cube-stat strong{font-size:20px}.cube-moves{grid-template-columns:repeat(6,minmax(0,1fr));gap:5px}.cube-moves button{font-size:13px}.game-action-row button{min-width:105px;padding:10px 7px;font-size:12px}}
@media(prefers-reduced-motion:reduce){.rubik-cube{will-change:auto}}