:root{color-scheme:light dark;--card-width: 84px;--card-height: 118px;--stack-overlap: 28px;--board-bg: #1b6b3a;--slot-border: rgba(255, 255, 255, .5)}body{margin:0;font-family:system-ui,sans-serif;background:var(--board-bg);min-width:1024px;overflow-x:auto;position:relative}#background-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-1}.background-layer__img{position:absolute;top:0;right:0;bottom:0;left:0;background-size:cover;background-position:center;opacity:0;transition:opacity .6s ease}.background-layer__img--active{opacity:1}.toolbar{display:flex;align-items:center;gap:16px;padding:12px 24px;background:#00000059;color:#fff;flex-wrap:wrap}.toolbar button{padding:6px 14px;border:1px solid rgba(255,255,255,.6);border-radius:6px;background:#ffffff1a;color:#fff;cursor:pointer}.toolbar button:hover:not(:disabled){background:#ffffff40}.toolbar button:disabled{opacity:.4;cursor:not-allowed}.toolbar__seed-label{display:flex;align-items:center;gap:6px}.toolbar__seed-input{width:7ch}.toolbar__score{margin-left:auto;font-weight:600;font-size:1.1rem}.deadlock-banner{padding:10px 24px;background:#b42828d9;color:#fff;font-weight:600;text-align:center}.solver-panel{padding:10px 24px;background:#1e3c6ed9;color:#fff;font-weight:600;text-align:center}.win-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#0009;z-index:10}.win-modal{background:#fff;color:#1a1a1a;padding:32px 40px;border-radius:12px;text-align:center;box-shadow:0 8px 24px #0006}.win-modal h2{margin:0 0 20px;font-size:2rem}.win-modal__actions{display:flex;gap:12px;justify-content:center}.win-modal__actions button{padding:10px 18px;border:none;border-radius:6px;background:#1b6b3a;color:#fff;cursor:pointer;font-size:1rem}.win-modal__actions button:hover{background:#24853f}.board{display:flex;flex-direction:column;gap:24px;padding:24px}.top-row{display:flex;justify-content:space-between;gap:48px}.freecells,.foundations{display:grid;grid-template-columns:repeat(4,var(--card-width));gap:12px}.tableau{display:grid;grid-template-columns:repeat(8,var(--card-width));gap:12px;align-items:start}.slot{width:var(--card-width);height:var(--card-height);border:2px dashed var(--slot-border);border-radius:8px;box-sizing:border-box;position:relative}.slot__hint{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:2rem;color:var(--slot-border)}.column{min-height:var(--card-height);position:relative}.card{width:var(--card-width);height:var(--card-height);background:#fdfdfd;border:1px solid #333;border-radius:8px;box-sizing:border-box;box-shadow:1px 2px 4px #0006;position:relative;-webkit-user-select:none;user-select:none}.column .card{position:absolute;top:calc(var(--stack-index, 0) * var(--stack-overlap));left:0}.slot .card{position:absolute;top:0;right:0;bottom:0;left:0}.card--black{color:#1a1a1a}.card--red{color:#c62828}.card[draggable=true]{cursor:grab}.card[draggable=true]:active{cursor:grabbing}.card--locked{cursor:not-allowed}.card--selected{outline:3px solid #ffd54f;outline-offset:-1px;box-shadow:0 0 8px 2px #ffd54fcc}.hint-source{outline:3px solid #42a5f5;outline-offset:-1px;box-shadow:0 0 8px 2px #42a5f5cc}.hint-target{outline:3px solid #42a5f5;outline-offset:-2px}.card__corner{position:absolute;font-size:.9rem;font-weight:600;line-height:1;white-space:pre}.card__corner--top{top:6px;left:6px}.card__corner--bottom{bottom:6px;right:6px;transform:rotate(180deg)}.card__center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:2.2rem}