: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 — 보드/캠버스/그리드 등을 여기에 */
#game {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 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;
}


/* ─── Rays ───────────────────────────────────────────────── */
#game { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 12px; justify-content: center; }

.rx-grid {
  width: 100%; aspect-ratio: 1; max-height: 100%;
  display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr);
  gap: 2px; align-self: center;
}
.rx-corner { }
/* 테두리(광선 발사)와 안쪽(원자 추측)이 한눈에 구분돼야 한다.
   처음엔 배경색 차이가 미묘해서 8×8 균일 격자처럼 보였다. */
.rx-edge {
  display: flex; align-items: center; justify-content: center;
  border-radius: 7px; background: #2a3242; border: 1px solid #3b465a;
  font-size: 13px; font-weight: 800; color: #9aa6b8;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.rx-edge:active { background: #38425a; }
.rx-edge.used { background: #151a22; border-color: #2a3140; }
.rx-cell {
  border-radius: 6px; background: #090b0f; border: 1px solid #171c24;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
  position: relative;
}
.rx-cell:active { background: #161b24; }
.rx-cell.guess::after {
  content: ''; width: 58%; height: 58%; border-radius: 50%;
  background: #4f9eff; box-shadow: 0 0 0 2px #12325c;
}
.rx-cell.hit::after { background: #22c55e; box-shadow: 0 0 0 2px #0b3d1f; }
.rx-cell.reveal::after {
  content: ''; width: 58%; height: 58%; border-radius: 50%;
  background: transparent; border: 2px dashed #e0503f;
}
.rx-cell.guess.reveal::after { background: #4f9eff; border: 2px dashed #e0503f; }

.rx-msg { flex: 0 0 auto; min-height: 20px; text-align: center;
  font-size: 14px; font-weight: 700; color: #9aa3b2; }
.rx-msg.ok { color: #22c55e; }
.rx-msg.bad { color: #e0503f; }

.rx-check {
  flex: 0 0 auto; font: inherit; font-size: 15px; font-weight: 700;
  padding: 13px 0; border-radius: 12px;
  background: #4f9eff; border: none; color: #06213f;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.rx-check:disabled { background: #1c2230; color: #5a6273; }
.rx-check:active:not(:disabled) { background: #3d8ae8; }