:root{--bg-color: #ffffff;--card-width: 80px;--card-height: 112px;--card-gap: 16px;--primary-color: #646cff}body{margin:0;display:flex;justify-content:center;min-height:100vh;background-color:var(--bg-color);color:#212121;font-family:Inter,sans-serif;overflow:hidden}#app{width:100%;max-width:1024px;padding:20px;display:flex;flex-direction:column;height:100vh}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}header h1{margin:0;font-size:1.5rem}button{padding:8px 16px;background-color:#f0f0f0;color:#212121;border:1px solid #ccc;border-radius:4px;cursor:pointer;transition:background-color .2s}button:hover{background-color:#e0e0e0}#game-board{flex:1;display:flex;flex-direction:column;gap:40px}#top-row{display:flex;justify-content:space-between}.stock-waste,.foundations{display:flex;gap:var(--card-gap)}.card-slot{width:var(--card-width);height:var(--card-height);border:1px solid rgba(0,0,0,.2);border-radius:6px;background-color:#0000000d;position:relative;display:flex;justify-content:center;align-items:center}#tableau{display:flex;justify-content:space-between;height:100%}.tableau-col{width:var(--card-width);position:relative;min-height:var(--card-height)}.card{width:var(--card-width);height:var(--card-height);border-radius:6px;background-color:#fff;color:#000;position:absolute;display:flex;flex-direction:column;justify-content:space-between;padding:5px;box-sizing:border-box;box-shadow:0 2px 5px #0003;-webkit-user-select:none;user-select:none;cursor:pointer;transition:transform .1s;border:1px solid #ddd}.card.face-down{background-color:#1a237e;background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.1) 0px,rgba(255,255,255,.1) 2px,transparent 2px,transparent 4px),repeating-linear-gradient(-45deg,rgba(255,255,255,.1) 0px,rgba(255,255,255,.1) 2px,transparent 2px,transparent 4px);border:1px solid #fff;box-shadow:inset 0 0 0 4px #fff,inset 0 0 0 5px #1a237e}.card.red{color:#d32f2f}.card.black{color:#212121}.card-top-left,.card-bottom-right{display:flex;flex-direction:column;align-items:center;font-size:14px;line-height:1}.card-bottom-right{transform:rotate(180deg)}.card-main{flex:1;display:flex;justify-content:center;align-items:center;font-size:24px}.tableau-col .card{top:0}