:root{--blue-player: #2563eb;--yellow-player: #facc15;--red-player: #dc2626;--green-player: #16a34a}body{font-family:Noto Sans KR,sans-serif;touch-action:manipulation}.board-grid{display:grid;width:auto;height:95%;aspect-ratio:1 / 1;background:#f8fafc;border:2px solid #94a3b8;border-radius:.375rem}.board-cell{border:1px solid #cbd5e1}.corner-blue:before,.corner-yellow:before,.corner-red:before,.corner-green:before{content:"";display:block;width:40%;height:40%;border-radius:50%;margin:30%;opacity:.5}.corner-blue:before{background-color:var(--blue-player)}.corner-yellow:before{background-color:var(--yellow-player)}.corner-red:before{background-color:var(--red-player)}.corner-green:before{background-color:var(--green-player)}.player-blue,.player-yellow,.player-red,.player-green{position:relative;overflow:hidden;box-sizing:border-box;border:2px solid;box-shadow:inset 0 1px 2px #fff9,inset 0 -1px 2px #0003}.player-blue{background-color:var(--blue-player);border-color:#1d4ed8}.player-yellow{background-color:var(--yellow-player);border-color:#ca8a04}.player-red{background-color:var(--red-player);border-color:#991b1b}.player-green{background-color:var(--green-player);border-color:#14532d}.player-blue:after,.player-yellow:after,.player-red:after,.player-green:after{content:"";position:absolute;top:1px;left:1px;right:1px;height:45%;background:linear-gradient(to bottom,#ffffff80,#fff0);border-radius:1px 1px 0 0}.piece-preview{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;aspect-ratio:1/1}.piece-preview-cell{width:100%;height:100%}.selected-piece{box-shadow:0 0 15px 5px #60a5fa;transform:scale(1.05)}.controls button{transition:all .2s ease-in-out}.controls button:hover{transform:translateY(-2px);box-shadow:0 4px 6px #0000001a}.controls button:active{transform:translateY(0);box-shadow:none}#game-over-modal{background-color:#000000b3}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(.95)}}.hint-cell{background-color:#facc1599;border:2px dashed #d97706;animation:pulse 1.5s infinite ease-in-out;box-sizing:border-box}