/* ==========================================================
   전체 레이아웃 & 파스텔 배경
   ========================================================== */
:root {
  --grid-size: 7;
  --cell-gap: 4px;
  --board-bg: #fdf6ec;
  --cell-bg: #ffffff;
  --accent: #ff8fab;
  --text-dark: #5b4b45;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Trebuchet MS", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background: linear-gradient(160deg, #ffe8f0 0%, #e8f4ff 50%, #fff6e0 100%);
  color: var(--text-dark);
  padding: 16px;
}

.game-wrapper {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

/* ==========================================================
   상단 HUD (점수 / 타이머)
   ========================================================== */
.hud {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #ffffffb3;
  border-radius: 18px;
  padding: 10px 18px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.game-title {
  font-size: 1.1rem;
  margin: 0;
  white-space: nowrap;
}

.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 64px;
}

.hud-label {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: #a89b93;
}

.hud-value {
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--accent);
}

/* ==========================================================
   게임 보드 (반응형 7x7 그리드)
   ========================================================== */
.board-area {
  width: 100%;
  display: flex;
  justify-content: center;
}

.game-board {
  --board-max: min(92vw, 460px);
  width: var(--board-max);
  height: var(--board-max);
  display: grid;
  grid-template-columns: repeat(var(--grid-size), 1fr);
  grid-template-rows: repeat(var(--grid-size), 1fr);
  gap: var(--cell-gap);
  background: var(--board-bg);
  border-radius: 16px;
  padding: 8px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
  touch-action: none;
  user-select: none;
}

.cell {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--cell-bg);
  border-radius: 10px;
  font-size: clamp(1.1rem, 5.2vw, 1.8rem);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

.cell:active {
  transform: scale(0.92);
}

/* 선택된 블록 표시: 테두리 + 살짝 흔들리는 효과 */
.cell.selected {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
  background: #fff0f5;
  animation: wiggle 0.35s ease-in-out infinite;
}

@keyframes wiggle {
  0%, 100% { transform: rotate(-4deg) scale(1.05); }
  50% { transform: rotate(4deg) scale(1.05); }
}

/* 스왑했지만 매치 실패 -> 되돌아갈 때 흔드는 효과 */
.cell.invalid-swap {
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* 매치되어 터지는 연출: 커지다가 작아지며 페이드아웃 */
.cell.matched {
  animation: pop 0.28s ease forwards;
  pointer-events: none;
}

@keyframes pop {
  0% { transform: scale(1); opacity: 1; }
  40% { transform: scale(1.25); opacity: 0.9; }
  100% { transform: scale(0); opacity: 0; }
}

/* 새로 채워진 블록이 위에서 떨어지는 느낌의 진입 효과 */
.cell.dropped {
  animation: dropIn 0.25s ease;
}

@keyframes dropIn {
  0% { transform: translateY(-30px); opacity: 0.4; }
  100% { transform: translateY(0); opacity: 1; }
}

/* ==========================================================
   결과 모달
   ========================================================== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(60, 40, 40, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: #fffaf3;
  border-radius: 20px;
  padding: 32px 28px;
  text-align: center;
  width: min(80vw, 320px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.modal-content h2 {
  margin-top: 0;
  color: var(--text-dark);
}

.final-score-label {
  margin: 8px 0 2px;
  color: #a89b93;
  font-size: 0.85rem;
}

.final-score {
  font-size: 2.2rem;
  font-weight: bold;
  color: var(--accent);
  margin: 0 0 18px;
}

.reset-btn {
  border: none;
  background: var(--accent);
  color: white;
  font-size: 1rem;
  padding: 10px 24px;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(255, 143, 171, 0.4);
  transition: transform 0.15s ease;
}

.reset-btn:active {
  transform: scale(0.95);
}

/* 작은 화면 대응 */
@media (max-width: 380px) {
  .game-title {
    font-size: 0.95rem;
  }
  .hud-value {
    font-size: 1.15rem;
  }
}