/* 2048 游戏样式 - 与Butterfly主题风格一致 */

#littleGame {
  max-width: 600px;
  margin: 2rem auto;
  padding: 2rem;
  background: var(--card-bg, #fff);
  border-radius: var(--card-border-radius, 12px);
  box-shadow: var(--card-box-shadow, 0 2px 12px rgba(0, 0, 0, 0.04));
}

[data-theme='dark'] #littleGame {
  background: var(--card-bg, #1f1f1f);
}

.game-container {
  width: 100%;
}

.game-header {
  margin-bottom: 2rem;
  text-align: center;
}

.game-title {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.game-info {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
}

.score-container,
.best-container {
  background: var(--card-bg, #fff);
  padding: 0.5rem 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--hr-border, #e3e8f7);
  min-width: 100px;
}

.score-label,
.best-label {
  font-size: 0.875rem;
  color: var(--font-color, #4c4948);
  opacity: 0.7;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

#score,
#best {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--theme-color, #49b1f5);
}

.game-controls {
  margin-top: 1rem;
}

.new-game-btn {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 500;
  color: #fff;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.new-game-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.new-game-btn:active {
  transform: translateY(0);
}

.game-description {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--font-color, #4c4948);
  opacity: 0.7;
}

.game-board-container {
  position: relative;
  width: 100%;
  padding-bottom: 100%;
  margin-top: 2rem;
}

.grid-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--hr-border);
  border-radius: 8px;
  padding: 1%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 1%;
}

.grid-row {
  display: contents;
}

.grid-cell {
  background: rgba(238, 228, 218, 0.35);
  border-radius: 6px;
}

[data-theme='dark'] .grid-cell {
  background: rgba(255, 255, 255, 0.05);
}

.tile-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 1%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 1%;
  pointer-events: none;
}

.tile {
  position: relative;
  border-radius: 6px;
  font-size: clamp(1rem, 4vw, 2rem);
  font-weight: bold;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.15s ease-in-out;
  animation: appear 0.2s;
}

@keyframes appear {
  from {
    transform: scale(0);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.tile-2 {
  background: #eee4da;
  color: #776e65;
}

.tile-4 {
  background: #ede0c8;
  color: #776e65;
}

.tile-8 {
  background: #f2b179;
  color: #f9f6f2;
}

.tile-16 {
  background: #f59563;
  color: #f9f6f2;
}

.tile-32 {
  background: #f67c5f;
  color: #f9f6f2;
}

.tile-64 {
  background: #f65e3b;
  color: #f9f6f2;
}

.tile-128 {
  background: #edcf72;
  color: #f9f6f2;
  font-size: clamp(0.875rem, 3.5vw, 1.75rem);
}

.tile-256 {
  background: #edcc61;
  color: #f9f6f2;
  font-size: clamp(0.875rem, 3.5vw, 1.75rem);
}

.tile-512 {
  background: #edc850;
  color: #f9f6f2;
  font-size: clamp(0.875rem, 3.5vw, 1.75rem);
}

.tile-1024 {
  background: #edc53f;
  color: #f9f6f2;
  font-size: clamp(0.75rem, 3vw, 1.5rem);
}

.tile-2048 {
  background: #edc22e;
  color: #f9f6f2;
  font-size: clamp(0.75rem, 3vw, 1.5rem);
  box-shadow: 0 0 30px 10px rgba(237, 194, 46, 0.5);
}

.game-message {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(238, 228, 218, 0.95);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  z-index: 100;
  display: none;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.game-message.show {
  display: block;
  animation: fadeIn 0.3s;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

.game-message p {
  font-size: 1.5rem;
  font-weight: bold;
  color: #776e65;
  margin-bottom: 1rem;
}

.restart-btn {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 500;
  color: #fff;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.restart-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

/* 暗色模式适配 */
[data-theme='dark'] .score-container,
[data-theme='dark'] .best-container {
  background: var(--card-bg, #1f1f1f);
  border-color: var(--hr-border, rgba(255, 255, 255, 0.1));
}

[data-theme='dark'] .game-message {
  background: rgba(50, 50, 50, 0.95);
}

[data-theme='dark'] .game-message p {
  color: #f9f6f2;
}

/* 响应式设计 */
@media (max-width: 768px) {
  #littleGame {
    padding: 1rem;
    margin: 1rem;
  }

  .game-title {
    font-size: 2rem;
  }

  .game-info {
    gap: 1rem;
  }

  .score-container,
  .best-container {
    padding: 0.5rem 1rem;
    min-width: 80px;
  }

  #score,
  #best {
    font-size: 1.25rem;
  }

  .new-game-btn {
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
  }
}