/* memory-game.css - Galaxy Theme */

.memory-container {
  max-width: 720px;
  box-sizing: border-box;
}

/* 게임 보드 (그리드) */
.game-wrapper {
  position: relative;
  width: 100%;
  max-width: 600px;
  height: auto;
  aspect-ratio: 1 / 1;
  margin: 2rem auto;
}

.game-wrapper.game-over {
  aspect-ratio: auto;
  height: auto;
  min-height: 300px;
}

.memory-board {
  width: 100%;
  height: 100%;
  padding: 10px;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 10px;
  perspective: 1000px;
  position: relative;
  background-color: var(--game-bg-color);
  border: 1px solid var(--game-grid-color);
  border-radius: var(--radius-md);
  box-shadow: var(--card-shadow);
}

/* 카드 스타일 */
.memory-card {
  background-color: transparent;
  width: 100%;
  height: 100%;
  cursor: pointer;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.5s;
}

.memory-card:active {
  transform: scale(0.97);
  transition: transform 0.1s;
}

.memory-card.flip {
  transform: rotateY(180deg);
  cursor: default;
}

.memory-card.blank {
  background-color: transparent;
  border: none;
  box-shadow: none;
  cursor: default;
}

.front-face,
.back-face {
  width: 100%;
  height: 100%;
  position: absolute;
  border-radius: var(--radius-sm);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 3rem;
  backface-visibility: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--game-grid-color);
}

.front-face {
  background-color: var(--panel-color);
  color: var(--text-color);
  transform: rotateY(180deg);
}

.back-face {
  background: repeating-linear-gradient(45deg,
      var(--back-face-pattern-color-1),
      var(--back-face-pattern-color-1) 10px,
      var(--back-face-pattern-color-2) 10px,
      var(--back-face-pattern-color-2) 20px);
  color: white;
  font-size: 2rem;
}

.start-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 253, 245, 0.95);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 100;
  border-radius: var(--radius-md);
  color: var(--text-color);
  text-align: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.start-overlay h2 {
  margin-top: -15rem;
  margin-bottom: 1rem;
  font-family: var(--galaxy-font);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--title-color);
}

.start-overlay p {
  margin-bottom: 4rem;
  font-size: 1rem;
  color: var(--text-muted);
}

#winOverlay {
  justify-content: flex-start;
  padding-top: 50px;
}

#winOverlay h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--title-color);
}

#winOverlay p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* 반응형 */
@media (max-width: 600px) {
  .memory-board {
    gap: 5px;
  }

  .front-face {
    font-size: 2rem;
  }
}

.level-controls {
  margin-bottom: 1rem;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.btn-level {
  background-color: var(--level-btn-bg);
  color: var(--text-color);
  border: 1px solid var(--level-btn-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-family: var(--galaxy-font);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-level.active {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: white;
}