/* Reuses .puzzle-layout / .puzzle-panel / .puzzle-stats / .leaderboard-panel / .win-msg from puzzle.css naming pattern */

.puzzle-layout {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  align-items: start;
}

@media (max-width: 640px) {
  .puzzle-layout { grid-template-columns: 1fr; }
}

.puzzle-panel h2 { margin: 0 0 4px; font-family: var(--font-head); font-size: 20px; }

.puzzle-stats { display: flex; gap: 20px; margin: 16px 0; }
.puzzle-stats > div { display: flex; flex-direction: column; }
.stat-label { font-size: 11.5px; color: var(--muted); margin-bottom: 2px; }
.puzzle-stats span:last-child { font-family: monospace; font-size: 20px; color: var(--gold); }

.memory-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 380px;
}

.memory-card {
  aspect-ratio: 1 / 1;
  perspective: 600px;
  cursor: pointer;
}

.memory-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.35s ease;
  transform-style: preserve-3d;
}

.memory-card.flipped .memory-card-inner,
.memory-card.matched .memory-card-inner {
  transform: rotateY(180deg);
}

.memory-card-face {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  backface-visibility: hidden;
  font-size: 26px;
}

.memory-card-back {
  background: var(--surface-2);
  border: 1px solid var(--line);
  color: var(--gold-dim);
}

.memory-card-front {
  background: var(--surface);
  border: 1px solid var(--gold-dim);
  transform: rotateY(180deg);
}

.memory-card.matched .memory-card-front {
  border-color: var(--teal);
  opacity: 0.6;
}

.win-msg {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(79, 176, 174, 0.12);
  border: 1px solid rgba(79, 176, 174, 0.4);
  border-radius: 5px;
  color: var(--teal);
  font-size: 14px;
}

.leaderboard-panel h3 { margin: 0 0 12px; font-size: 15px; }
.leaderboard-list { display: flex; flex-direction: column; gap: 6px; }

.leader-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--surface-2);
  border-radius: 5px;
  font-size: 13px;
}

.leader-rank { width: 20px; text-align: center; color: var(--gold); font-weight: 700; }
.leader-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.leader-time { font-family: monospace; color: var(--teal); }
.leader-row.is-me { border: 1px solid var(--gold-dim); }