/* ---------- Memory-spezifisch ---------- */

.diff-bar{
  display:flex;gap:8px;margin-top:18px;flex-wrap:wrap;
}
.diff-btn{
  flex:1 1 100px;padding:10px 0;border:1px solid var(--line);background:var(--steel);
  color:var(--muted);border-radius:var(--radius);cursor:pointer;font-weight:600;font-size:13px;
  transition:border-color .15s,color .15s,background .15s;text-align:center;
}
.diff-btn:hover{border-color:var(--amber);color:var(--amber);}
.diff-btn.active{background:var(--feuerrot);border-color:var(--feuerrot);color:#fff;}
.diff-btn .pair-count{display:block;font-family:var(--mono);font-size:18px;font-weight:700;margin-top:2px;}

.board-wrap{
  margin-top:22px;
  background:var(--steel);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;overflow:hidden;
}
.board{
  display:grid;gap:10px;
  justify-content:center;
}

.card{
  perspective:800px;cursor:pointer;position:relative;
}
.card-inner{
  position:relative;width:100%;padding-bottom:130%;
  transform-style:preserve-3d;transition:transform .4s ease;
}
.card.flipped .card-inner{transform:rotateY(180deg);}
.card.matched .card-inner{transform:rotateY(180deg);}
.card.matched{cursor:default;}
.card-face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;overflow:hidden;
}
.card-front{
  background:linear-gradient(135deg,var(--steel-2),var(--ink));
  border:2px solid var(--line);
}
.card-front .card-icon{
  font-size:32px;line-height:1;
}
.card-back{
  transform:rotateY(180deg);
  background:var(--steel-2);
  border:2px solid var(--line);
  padding:8px;
}
.card-back .card-name{
  font-family:var(--display);font-weight:700;font-size:clamp(10px,1.8vw,14px);
  color:var(--paper);line-height:1.2;
}
.card-back .card-emoji{
  font-size:clamp(20px,4vw,36px);margin-bottom:4px;
}
.card.flipped .card-front,
.card.matched .card-front{
  border-color:var(--amber);
}
.card.matched .card-back{
  border-color:var(--ok);
  background:rgba(52,199,123,.08);
}

/* Overlay/Modal overrides for Memory */
.modal{
  padding:32px;max-width:440px;width:90%;text-align:center;
}
.modal h2{
  font-family:var(--display);font-weight:800;font-size:28px;margin:0 0 4px;
}
.modal-sub{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;margin-bottom:16px;}
.modal .stats-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0;
}
.modal .stat-card{
  background:var(--ink);border:1px solid var(--line);border-radius:8px;padding:12px;
}
.modal .stat-card .s-label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;}
.modal .stat-card .s-value{font-family:var(--mono);font-weight:700;font-size:22px;color:var(--paper);margin-top:4px;}
.modal .stat-card .s-value.highlight{color:var(--ok);}
.close-x{
  position:absolute;top:12px;right:14px;background:none;border:none;color:var(--muted);
  font-size:22px;cursor:pointer;line-height:1;padding:4px;
}
.close-x:hover{color:var(--paper);}
.btn{
  display:inline-block;padding:10px 22px;border-radius:999px;border:1px solid var(--line);
  background:var(--steel);color:var(--paper);font-weight:600;font-size:13px;cursor:pointer;
  transition:border-color .15s,background .15s;
}
.btn:hover{border-color:var(--hivis);}
.btn.primary{background:var(--feuerrot);border-color:var(--feuerrot);color:#fff;}
.btn.primary:hover{background:#c0223a;}
.modal-actions{display:flex;gap:10px;justify-content:center;margin-top:18px;flex-wrap:wrap;}

footer{
  margin-top:40px;padding-top:18px;border-top:1px solid var(--line-soft);
  color:var(--muted-2);font-size:12px;font-family:var(--mono);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
}

@media(max-width:600px){
  .topbar{padding:14px 16px 12px;}
  .brand .mark{font-size:26px;}
  .board{gap:8px;}
  .card-back .card-name{font-size:9px;}
  .card-back .card-emoji{font-size:18px;}
  .dash{flex-direction:column;}
  .stat{border-right:none;border-bottom:1px solid var(--line-soft);}
  .stat:last-child{border-bottom:none;}
}