:root {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
  touch-action: manipulation;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100dvh;
  overflow: hidden;
  background: #0a0a0a;
  color: #f5f5f5;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  overscroll-behavior: none;
}

main {
  height: 100%;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  padding:
    max(60px, env(safe-area-inset-top))
    16px
    max(20px, env(safe-area-inset-bottom));
  gap: 16px;
}

/* 점수바: SCORE | BEST | New 버튼 */
.score-bar {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.score-box {
  flex: 1;
  background: #161616;
  border: 1px solid #2a2a2a;
  border-radius: 12px;
  padding: 8px 12px;
  text-align: center;
  min-width: 0;
}

.score-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #a0a0a0;
}

.score-val,
.best-val {
  display: block;
  font-size: 22px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: #f5f5f5;
  margin-top: 2px;
  line-height: 1.1;
}

.new-btn {
  flex: 0 0 auto;
  font: inherit;
  color: #fff;
  background: #4f9eff;
  border: none;
  border-radius: 12px;
  padding: 0 18px;
  min-height: 56px;
  cursor: pointer;
  font-weight: 700;
  font-size: 14px;
  -webkit-tap-highlight-color: transparent;
}

.new-btn:active { background: #3d8ae8; }

/* 게임 영역 */
#game { flex: 1; display: flex; min-height: 0; }
.dm { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: space-between; gap: 10px; width: 100%; padding: 4px 0; }
.dm-ai { font-size: 15px; font-weight: 700; color: #b8b8b8; display: flex; align-items: center; gap: 6px; }
.dm-back { color: #4f9eff; font-size: 22px; }

/* 체인 — 가로 스크롤 */
.dm-chain {
  display: flex; align-items: center; gap: 3px;
  width: 100%; min-height: 56px; overflow-x: auto;
  padding: 6px 8px; -webkit-overflow-scrolling: touch;
  background: #11131a; border-radius: 12px;
}
.dm-empty { width: 1px; height: 44px; }

/* 도미노 타일 */
.dm-tile {
  display: flex; align-items: stretch; flex: 0 0 auto;
  background: #f3f3f3; border-radius: 7px; padding: 3px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
.dm-div { width: 2px; background: rgba(0,0,0,0.25); margin: 2px 2px; align-self: stretch; }
.dm-half {
  display: grid; grid-template-columns: repeat(3,1fr); grid-template-rows: repeat(3,1fr);
  width: 26px; height: 26px; gap: 1px; padding: 2px;
}
.dm-half .dot { align-self: center; justify-self: center; width: 5px; height: 5px; border-radius: 50%; background: #1a1a1a; }
.dm-tile.end-l, .dm-tile.end-r { box-shadow: 0 0 0 2px #4f9eff, 0 1px 3px rgba(0,0,0,0.4); }
.dm-tile.pick { box-shadow: 0 0 0 3px #ffd166, 0 1px 3px rgba(0,0,0,0.4); cursor: pointer; }

/* 손패 */
.dm-msg { min-height: 20px; font-size: 14px; font-weight: 700; color: #cfcfcf; text-align: center; }
.dm-hand {
  display: flex; gap: 6px; flex-wrap: wrap; justify-content: center;
  width: 100%; max-height: 38vh; overflow-y: auto; padding: 4px;
}
.dm-tile.hand { cursor: default; }
.dm-tile.hand .dm-half { width: 30px; height: 30px; }
.dm-tile.hand .dm-half .dot { width: 6px; height: 6px; }
.dm-tile.hand.playable { box-shadow: 0 0 0 2px #2ec27e, 0 1px 3px rgba(0,0,0,0.4); cursor: pointer; }
.dm-tile.hand.sel { box-shadow: 0 0 0 3px #ffd166, 0 1px 3px rgba(0,0,0,0.4); }

.dm-draw {
  font: 800 15px -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #fff; background: #4f9eff; border: none; border-radius: 12px;
  padding: 12px 24px; min-height: 48px; cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.dm-draw[hidden] { display: none; }
.overlay-score .unit { font-size: 16px; font-weight: 700; color: #a0a0a0; }
.overlay-card .next-overlay-btn { background: #4f9eff; border-color: #4f9eff; }

/* 좌상단 ← 홈, 우상단 🏆 명예의 전당 — 모든 게임 공통 chrome */
.home-link,
.hof-link {
  position: fixed;
  top: max(12px, env(safe-area-inset-top));
  z-index: 10;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  text-decoration: none;
  font-size: 20px;
  font-weight: 600;
  line-height: 1;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: background 0.15s ease;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.home-link { left:  max(12px, env(safe-area-inset-left)); }
.hof-link  { right: max(12px, env(safe-area-inset-right)); }

@media (hover: hover) {
  .home-link:hover,
  .hof-link:hover {
    background: rgba(0, 0, 0, 0.55);
  }
}

/* 오버레이 (게임 종료 / 완료 시 점수 + 저장 버튼) */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  padding: 20px;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.overlay[hidden] { display: none; }

.overlay-card {
  background: #161616;
  border: 1px solid #2a2a2a;
  border-radius: 18px;
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  text-align: center;
  min-width: 240px;
  max-width: 320px;
  width: 100%;
}

.overlay-card h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.overlay-score {
  margin: 0;
  font-size: 56px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.04em;
  line-height: 1;
}

.overlay-card button {
  font: inherit;
  color: #fff;
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 12px 20px;
  min-height: 44px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  width: 100%;
  -webkit-tap-highlight-color: transparent;
}

.overlay-card button:active {
  background: rgba(255, 255, 255, 0.18);
}

.overlay-card .save-btn {
  background: #4f9eff;
  border-color: #4f9eff;
}

.overlay-card .save-btn:active {
  background: #3d8ae8;
}