body{margin:0}:root{--bg: #0f1220;--panel: #171a2b;--panel2: #1e2238;--text: #e9ecff;--muted: #b9c0ff;--cell: #2a2f4a;--gap: 12px;--radius: 16px;--move-ms: .2s}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,"Apple Color Emoji","Segoe UI Emoji";background:radial-gradient(1000px 600px at 20% 10%,#1b1f38 0%,var(--bg) 55%);color:var(--text)}.page{min-height:100vh;display:grid;place-items:center;padding:16px}.wrap{width:min(560px,96vw);max-height:calc(100vh - 32px);display:grid;grid-template-rows:auto 1fr auto;gap:14px}.top{display:flex;gap:12px;align-items:flex-end;justify-content:space-between;flex-wrap:wrap}.title h1{margin:0;font-size:42px;letter-spacing:.5px}.title p{margin:6px 0 0;color:var(--muted)}.scores{display:flex;gap:10px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.scoreBox{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:10px 14px;min-width:110px}.scoreBox .label{font-size:12px;opacity:.85;color:var(--muted)}.scoreBox .value{font-size:18px;font-weight:700;margin-top:4px}.btn{background:linear-gradient(180deg,#5662ff,#3c46ff);border:0;color:#fff;padding:10px 14px;border-radius:14px;font-weight:700;cursor:pointer;box-shadow:0 10px 30px #3c46ff38}.btn:hover{filter:brightness(1.05)}.btn.secondary{background:linear-gradient(180deg,#2b2f49,#232743);box-shadow:none;border:1px solid rgba(255,255,255,.12)}.main{display:grid;place-items:center;min-height:0}.board{position:relative;width:min(520px,96vw);height:min(520px,calc(100vh - 220px));aspect-ratio:1 / 1;border-radius:16px;padding:12px;background:linear-gradient(180deg,#151a2f,#111528);border:1px solid rgba(255,255,255,.08);touch-action:none;overflow:hidden;contain:layout paint;isolation:isolate}.bgGrid{position:absolute;inset:0;padding:12px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.bgCell{border-radius:14px;background:#2a2f4a;box-shadow:inset 0 0 0 1px #ffffff0f;opacity:.65}.tileLayer{position:absolute;inset:0;contain:layout paint;transform:translateZ(0)}.tile{position:absolute;left:0;top:0;transition:transform var(--move-ms) cubic-bezier(.22,1,.36,1);transform:translateZ(0);will-change:transform;contain:layout paint style}.tileInner{width:100%;height:100%;border-radius:14px;display:flex;align-items:center;justify-content:center;font-weight:900;-webkit-user-select:none;user-select:none;box-shadow:inset 0 0 0 1px #ffffff14;font-size:clamp(18px,5vw,34px);backface-visibility:hidden;transform:translateZ(0)}.tile.spawn .tileInner{animation:spawn .12s ease-out}@keyframes spawn{0%{transform:scale(.85)}to{transform:scale(1)}}.tile.mergePop .tileInner{animation:pop .14s ease-out}@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.06)}to{transform:scale(1)}}.val-2{background:#24314f}.val-4{background:#2a3a62}.val-8{background:#31467a}.val-16{background:#3b5aa0}.val-32{background:#4470c8}.val-64{background:#4b84ee}.val-128{background:#7b6dff}.val-256{background:#9b5cff}.val-512{background:#c04bff}.val-1024{background:#ff4bd6}.val-2048{background:#ff3d7a}.val-0{color:transparent}.overlay{position:absolute;inset:0;border-radius:var(--radius);background:#0a0c16b8;display:flex;align-items:center;justify-content:center;padding:18px}.overlayCard{width:100%;max-width:380px;background:linear-gradient(180deg,#1e2238f2,#171a2bf2);border:1px solid rgba(255,255,255,.1);border-radius:18px;padding:18px;text-align:center}.overlayTitle{font-size:22px;font-weight:900}.overlayText{margin-top:8px;color:var(--muted)}.overlayActions{margin-top:14px;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.footer{padding-top:10px;border-top:1px solid rgba(255,255,255,.08);color:var(--muted);display:grid;gap:6px;text-align:center}.footerLine{display:flex;gap:8px;align-items:center;justify-content:center;flex-wrap:wrap;font-size:14px}.footerLink{color:var(--text);text-decoration:none;font-weight:800;padding:6px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:#ffffff0f}.footerLink:hover{filter:brightness(1.08)}.footerSmall{text-align:center;font-size:12px;opacity:.9}.tile.ghost{opacity:0;transition:transform var(--move-ms) cubic-bezier(.22,1,.36,1),opacity var(--move-ms) ease-out;pointer-events:none}