.backface-hidden{backface-visibility:hidden;-webkit-backface-visibility:hidden}.transform-style-preserve-3d{transform-style:preserve-3d;-webkit-transform-style:preserve-3d}.rotate-y-180{transform:rotateY(180deg)}.rotate-y-0{transform:rotateY(0deg)}.visible{visibility:visible}.invisible{visibility:hidden}.memory-card{background-color:#8b5cf6;border:2px solid #34d399;box-shadow:0 0 10px #34d399;border-radius:.75rem;transition:all .3s ease}.memory-card:hover{box-shadow:0 0 15px #34d399;transform:translateY(-2px)}.question-mark{font-size:2.5rem;color:#fcd34d;font-weight:700;text-shadow:0 0 5px rgba(251,191,36,.5)}.card-back-purple{position:relative;background:radial-gradient(circle at 30% 30%,#25386a,#121b33 65%),linear-gradient(135deg,#0f1a33,#1d2b52);border:2px solid rgba(255,215,128,.55);box-shadow:inset 0 0 0 1px hsla(0,0%,100%,.08),0 4px 10px -2px rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;font-family:Inter,sans-serif;box-sizing:border-box}.card-back-purple:before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(45deg,hsla(0,0%,100%,.05) 0 6px,transparent 6px 12px);opacity:.3;pointer-events:none}.card-back-purple .compass-ring{position:absolute;width:72%;height:72%;border:2px solid rgba(255,215,128,.55);border-radius:50%;box-shadow:0 0 8px -2px rgba(255,215,128,.5),inset 0 0 12px -2px rgba(255,215,128,.3)}.card-back-purple .compass-needle{position:absolute;width:8%;height:60%;background:linear-gradient(180deg,rgba(255,215,128,.9),rgba(180,130,40,.4));transform:rotate(12deg);top:20%;left:50%;margin-left:-4%;border-radius:2px;box-shadow:0 0 4px rgba(255,215,128,.6)}.card-back-purple .game-title{position:absolute;bottom:10%;font-size:.55rem;letter-spacing:3px;font-weight:800;color:#f8e4b0;text-shadow:0 1px 2px #000,0 0 6px rgba(255,215,128,.45)}.card-front-frame{position:relative;background:#021b27;border:2px solid rgba(255,215,128,.35);box-shadow:inset 0 0 0 1px hsla(0,0%,100%,.06),0 2px 6px -2px rgba(0,0,0,.6);box-sizing:border-box}.card-front-frame:before{content:"";position:absolute;inset:2px;border:1px solid rgba(255,215,128,.25);border-radius:.65rem;pointer-events:none}.card-3d-wrapper{position:relative;width:100%;height:100%;transform-style:preserve-3d;-webkit-transform-style:preserve-3d}.card-face{position:absolute;inset:0;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden}.card-face.back{transform:rotateY(0deg)}.card-face.front{transform:rotateY(180deg)}.matched-card{position:relative}.matched-card:after{display:none}.matched-card .card-3d-wrapper{filter:none}.matched-card .card-face.front{z-index:2;position:relative}.matched-card .card-face.back{display:none}.matched-card:hover{transform:none}