*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,Segoe UI,Arial,sans-serif;background:linear-gradient(160deg,#0f172a,#1e293b);color:#e2e8f0;min-height:100dvh;display:grid;place-items:center}
.app{width:min(880px,94vw);display:grid;gap:1rem}
.top{display:flex;justify-content:space-between;align-items:center}
h1{font-size:1.5rem;margin:0}
.card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:1rem;backdrop-filter:blur(6px)}
.score{display:grid;grid-template-columns:repeat(3,1fr);text-align:center}.score span{display:block;font-size:.8rem;opacity:.8}.score strong{font-size:1.6rem}
.arena{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:1rem}.hand{font-size:4rem;background:rgba(0,0,0,.2);border-radius:16px;padding:1rem;min-height:120px;display:grid;place-items:center;transition:transform .25s ease}.shake{animation:shake .35s ease 2}
@keyframes shake{0%{transform:translateY(0)}25%{transform:translateY(-10px)}50%{transform:translateY(0)}75%{transform:translateY(-8px)}100%{transform:translateY(0)}}
.center{text-align:center;min-width:170px}#countdown{font-weight:700;font-size:1.05rem}#result{margin-top:.4rem;opacity:.95}
.controls{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem}button{appearance:none;border:none;border-radius:12px;padding:.9rem 1rem;background:#22c55e;color:#07220f;font-weight:700;cursor:pointer;transition:transform .08s ease,opacity .2s}button:hover{opacity:.94}button:active{transform:scale(.98)}
.ghost{background:transparent;border:1px solid rgba(255,255,255,.25);color:#e2e8f0}.footer-actions{display:flex;justify-content:center}
@media (max-width:640px){.arena{grid-template-columns:1fr}.hand{min-height:90px;font-size:3rem}.controls{grid-template-columns:1fr}}