/* ===== Game Arcade — 공통 디자인 시스템 ===== */

:root {
  --bg-dark: #0d0d14;
  --bg-overlay: rgba(8, 8, 16, 0.88);
  --text-primary: #eeeef0;
  --accent: #7fc97f;
  --accent2: #ffdd44;
  --danger: #ff4466;
  --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-game: 'Courier New', monospace;
  --transition: 0.3s ease;
}

/* ===== 오버레이 (타이틀/결과) ===== */

.game-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg-overlay);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  opacity: 0;
  transition: opacity var(--transition);
  font-family: var(--font-main);
  color: var(--text-primary);
}

.game-overlay.show {
  opacity: 1;
}

.game-overlay h1 {
  font-size: 2.4rem;
  margin: 0 0 0.5em;
  text-shadow: 0 0 20px var(--accent);
  letter-spacing: 2px;
}

.game-overlay .subtitle {
  font-size: 1rem;
  opacity: 0.7;
  margin-bottom: 1.5em;
}

.game-overlay .final-score {
  font-size: 1.8rem;
  font-family: var(--font-game);
  color: var(--accent2);
  margin: 0.5em 0;
}

/* ===== 버튼 ===== */

.game-overlay button {
  display: inline-block;
  margin: 0.4em;
  padding: 0.7em 1.8em;
  font-size: 1rem;
  font-family: var(--font-main);
  font-weight: 600;
  border: 2px solid var(--accent);
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition);
  min-width: 140px;
}

.game-overlay button:hover {
  background: var(--accent);
  color: var(--bg-dark);
  box-shadow: 0 0 20px rgba(127, 201, 127, 0.4);
  transform: translateY(-2px);
}

.game-overlay button:active {
  transform: translateY(0);
}

.game-overlay .btn-title {
  border-color: var(--accent2);
}

.game-overlay .btn-title:hover {
  background: var(--accent2);
  box-shadow: 0 0 20px rgba(255, 221, 68, 0.4);
}

/* ===== 점수판 (인게임) ===== */

.hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 12px 20px;
  z-index: 100;
  pointer-events: none;
  font-family: var(--font-game);
  color: var(--text-primary);
  font-size: 1.1rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.8);
}

/* ===== 애니메이션 ===== */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.game-overlay.show h1,
.game-overlay.show .final-score,
.game-overlay.show button {
  animation: fadeIn 0.4s ease forwards;
}

.game-overlay.show h1          { animation-delay: 0.0s; }
.game-overlay.show .final-score { animation-delay: 0.1s; }
.game-overlay.show button       { animation-delay: 0.2s; }