/* ============================================================
   奶龙翻翻乐
   ============================================================ */

.game-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 22px 24px 18px;
  border-radius: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.game-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.game-stats {
  display: flex;
  gap: 28px;
}

.gstat {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.gstat b {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.gstat span {
  font-size: 0.72rem;
  color: var(--muted);
}

.game-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.seg {
  display: flex;
  padding: 3px;
  border-radius: 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.seg button {
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 7px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.seg button:hover {
  color: var(--text);
}

.seg button.active {
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

#gRestart {
  padding: 9px 14px;
  font-size: 0.82rem;
}

#gSound {
  font-size: 1rem;
}

/* ---------- 棋盘 ---------- */
.game-board {
  --cols: 4;
  display: grid;
  grid-template-columns: repeat(var(--cols), minmax(0, 1fr));
  gap: clamp(8px, 1.4vw, 14px);
  max-width: 740px;
  margin: 0 auto;
}

.card {
  position: relative;
  aspect-ratio: 1;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  perspective: 800px;
  -webkit-tap-highlight-color: transparent;
}

.card-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.card-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: 14px;
  overflow: hidden;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.card-back {
  background:
    radial-gradient(circle at 30% 22%, rgba(255, 255, 255, 0.2), transparent 42%),
    radial-gradient(circle at 75% 80%, rgba(255, 255, 255, 0.12), transparent 45%),
    linear-gradient(140deg, var(--accent), var(--accent-2));
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08),
    0 10px 22px -12px var(--accent);
  transition: filter 0.2s;
}

.card-back::before {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 10px;
  border: 1px dashed rgba(255, 255, 255, 0.28);
  pointer-events: none;
}

.card-logo {
  position: relative;
  color: #fff;
  font-weight: 800;
  font-size: clamp(0.72rem, 1.8vw, 0.95rem);
  letter-spacing: 0.2em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
  user-select: none;
}

.card-front {
  transform: rotateY(180deg);
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.card-front img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card:hover:not(.flipped):not(.matched) .card-back {
  filter: brightness(1.06);
}

.card:active:not(.flipped):not(.matched) {
  transform: scale(0.97);
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 14px;
}

.card.matched {
  pointer-events: none;
}

.card.matched .card-front {
  box-shadow: inset 0 0 0 3px var(--accent),
    0 12px 26px -14px var(--accent);
}

.card.matched {
  animation: card-pop 0.42s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes card-pop {
  0% { transform: scale(1); }
  45% { transform: scale(0.94); }
  100% { transform: scale(1); }
}

/* ---------- 底部提示 ---------- */
.game-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.78rem;
}

.game-hint {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- 胜利弹层 ---------- */
.win-overlay {
  position: fixed;
  inset: 0;
  z-index: 270;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(8, 10, 20, 0.6);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.win-overlay[hidden] {
  display: none;
}

.win-confetti {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.win-card {
  position: relative;
  width: min(360px, 100%);
  padding: 30px 26px 24px;
  border-radius: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: win-in 0.42s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes win-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.win-emoji {
  font-size: 2.8rem;
  line-height: 1;
  margin-bottom: 8px;
}

.win-card h2 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.win-stats {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0 0 10px;
}

.win-stars {
  font-size: 1.55rem;
  letter-spacing: 0.22em;
  color: #f59e0b;
  margin-bottom: 18px;
  text-shadow: 0 2px 12px rgba(245, 158, 11, 0.35);
}

.win-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
}

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .game-shell {
    padding: 18px 14px 14px;
    border-radius: 18px;
  }

  .game-stats {
    gap: 18px;
  }

  .gstat b {
    font-size: 1.15rem;
  }

  .game-tools {
    width: 100%;
    justify-content: space-between;
  }

  .card-face {
    border-radius: 11px;
  }
}

@media (max-width: 420px) {
  .game-board {
    gap: 6px;
  }

  .seg button {
    padding: 6px 9px;
    font-size: 0.72rem;
  }

  #gRestart {
    padding: 8px 10px;
    font-size: 0.76rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-inner {
    transition-duration: 0.01ms;
  }

  .card.matched {
    animation: none;
  }
}