: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;
  min-height: 0;   /* 작은 폰에서 아래 조작 요소가 화면 밖으로 밀리지 않게 */
}

/* 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;
}

/* ─── Rail Route ─────────────────────────────────────────── */
:root {
  --rw-ok: #6fe08e;
  --rw-accent: #f2c14e;
}
body {
  background:
    radial-gradient(120% 55% at 50% 0%, #1d2a22 0%, rgba(29, 42, 34, 0) 70%),
    #0c110e;
}
main { gap: 10px; }
.score-bar { gap: 6px; }
.score-box { padding: 6px 6px; border-radius: 12px; background: #141c17; border-color: #26332b; }
.score-val, .time-val, .best-val {
  display: block;
  font-size: 21px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: #f5f5f5;
  margin-top: 2px;
  line-height: 1.1;
}
.score-box.low .time-val { color: #ff7b6b; }
.new-btn { padding: 0 14px; min-height: 52px; background: #4f9eff; color: #0a0a0a; }

.rw-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-height: 40px;
  text-align: center;
}
.rw-level {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #9fb3a5;
}
.rw-coach {
  font-size: 13px;
  line-height: 1.3;
  color: #dbe5dd;
  max-width: 34em;
}
.rw-coach.warn { color: var(--rw-accent); }

#game { position: relative; touch-action: none; }
.rw-board {
  display: block;
  position: absolute;
  inset: 0;
  touch-action: none;
}

.rw-tools {
  display: flex;
  gap: 8px;
  justify-content: center;
}
.rw-tools button {
  flex: 1 1 0;
  max-width: 140px;
  min-height: 44px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  color: #e9efe9;
  background: #17201a;
  border: 1px solid #2f3e34;
  border-radius: 12px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.rw-tools button:active { background: #223028; }
.rw-tools button:disabled { opacity: 0.45; }
.rw-tools .rw-mark.on {
  background: #4a2420;
  border-color: #d66a5c;
  color: #ffd9d3;
}

.overlay-card .unit {
  font-size: 15px;
  font-weight: 700;
  margin-left: 6px;
  letter-spacing: 0;
  color: #b8c6bc;
}
.overlay-meta { margin: 0; font-size: 14px; color: #c3cec6; }
.rw-start h2 { font-size: 24px; }
.rw-art { width: 176px; height: 66px; }
.rw-intro { margin: 0; font-size: 14px; line-height: 1.45; color: #d6e0d8; }
.rw-intro.dim { color: #a9b8ad; font-size: 13px; }
.overlay-card .start-btn {
  background: #6fe08e;
  border-color: #6fe08e;
  color: #0b1a10;
  font-weight: 800;
}
.overlay-card .start-btn:active { background: #5bc97a; }

/* narrow phones: give the grid every pixel (10×10 keeps ≥ 28px cells at 320px) */
@media (max-width: 360px) {
  main { padding-left: 6px; padding-right: 6px; gap: 8px; }
  .score-box { padding: 5px 4px; }
  .score-label { font-size: 10px; letter-spacing: 0.04em; }
  .score-val, .time-val, .best-val { font-size: 19px; }
  .new-btn { padding: 0 10px; min-height: 48px; font-size: 13px; }
  .rw-coach { font-size: 12px; }
}
/* short screens: the start card keeps title, one line of rules and the buttons */
@media (max-height: 700px) {
  .rw-art, .rw-intro.dim { display: none; }
  .rw-start h2 { font-size: 21px; }
}
:lang(ko) .rw-intro, :lang(ko) .rw-coach { word-break: keep-all; }