/* 포켓 큐브 — 큐브 두 시점(앞·위·오른쪽 / 뒤·아래·왼쪽)을 위에 두고,
   회전 버튼 6개를 화면 아래(엄지 닿는 곳)에 2×3으로 깔았다. */
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; height: 100%; overflow: hidden;
  background: #0a0a0a; color: #f5f5f5;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  -webkit-font-smoothing: antialiased; -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}
main {
  height: 100%; max-width: 480px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 9px;
  padding: max(60px, env(safe-area-inset-top)) 10px max(14px, env(safe-area-inset-bottom));
}
.score-bar { display: flex; gap: 6px; align-items: stretch; flex: 0 0 auto; }
.score-box {
  flex: 1; background: #161616; border: 1px solid #2a2a2a; border-radius: 12px;
  padding: 6px 4px; display: flex; flex-direction: column; align-items: center;
  justify-content: center; min-width: 0;
}
.score-label { font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: #a0a0a0; }
.score-val, .best-val, .time-val { font-size: 19px; font-weight: 800; font-variant-numeric: tabular-nums; }
.new-btn {
  flex: 0 0 auto; font: inherit; color: #0a0a0a; background: #4f9eff; border: none;
  border-radius: 12px; padding: 0 13px; min-height: 56px; cursor: pointer;
  font-weight: 700; font-size: 14px;
}
.new-btn:active { background: #3d8ae8; }

#game {
  flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(120% 80% at 50% 40%, #1a1d24 0%, #121419 55%, #0d0e11 100%);
  border: 1px solid #23282a; border-radius: 18px; padding: 8px 6px;
}
#board { display: block; width: 100%; height: 100%; touch-action: manipulation; }

.info-row { display: flex; gap: 6px; flex: 0 0 auto; }
.info-box {
  flex: 1; background: #141414; border: 1px solid #242424; border-radius: 10px;
  padding: 5px; display: flex; align-items: center; justify-content: center; gap: 7px;
}
.info-label { font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: #8f8f8f; }
.level-val, .move-val { font-size: 15px; font-weight: 800; font-variant-numeric: tabular-nums; }

.status { margin: 0; text-align: center; font-size: 13px; font-weight: 600; color: #a0a0a0; min-height: 18px; flex: 0 0 auto; }
.status.ok { color: #52d97f; }

/* 회전 버튼 — 2행 3열. 한 칸이 최소 56px 높이라 한 손 엄지로 눌린다. */
.pad {
  flex: 0 0 auto; display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 7px;
}
.mv-btn {
  font: inherit; font-weight: 800; font-size: 19px; font-variant-numeric: tabular-nums;
  color: #0a0a0a; background: #cdd6e2; border: none; border-radius: 12px;
  min-height: 56px; cursor: pointer;
}
.mv-btn:active { background: #a9b6c7; }

.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; border: none; cursor: pointer;
  font-family: inherit; backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
}
.home-link { left: max(12px, env(safe-area-inset-left)); }
.hof-link { right: max(12px, env(safe-area-inset-right)); }

.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; }
.overlay-score { margin: 0; font-size: 34px; font-weight: 800; font-variant-numeric: tabular-nums; }
.overlay-sub { margin: -4px 0 0; font-size: 14px; font-weight: 600; color: #a0a0a0; }
.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%;
}
.overlay-card button:active { background: rgba(255,255,255,0.18); }
.overlay-card .save-btn { background: #4f9eff; border-color: #4f9eff; color: #0a0a0a; }