.pbbl-board{display:grid;gap:6px;margin:18px auto;width:min(80vw,640px);aspect-ratio:1;background:#111;border:1px solid #222;border-radius:18px;padding:6px}
.pbbl-tile{background:#222;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-weight:bold;color:#fff;font-size:1.5em}
.pbbl-tile:active{transform:scale(.98)}
.pbbl-blank{background:#000;cursor:default}
.pbbl-win{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.65);z-index:20}
.pbbl-win[hidden]{display:none}
.pbbl-card{background:#111;border:1px solid #333;border-radius:16px;padding:22px;max-width:90%;text-align:center;color:#fff}
.pbbl-btn{background:#ff3e8a;color:#fff;border:none;border-radius:12px;padding:10px 14px;cursor:pointer}
.pbbl-confetti{position:fixed;inset:0;pointer-events:none;z-index:30}