: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;
}

/* ─── Sightline ──────────────────────────────────────────── */
.sl-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  height: 100%;
  min-height: 0;
  padding: 0 2px;
  box-sizing: border-box;
}

.sl-head {
  display: flex; align-items: baseline; justify-content: center; gap: 10px;
  width: 100%; font-size: 12px; font-weight: 800; color: #a8b4c4;
}
.sl-head b { color: #f0f4fa; font-variant-numeric: tabular-nums; }

/* 판: 9칸 × 9줄의 뾰족머리 육각 격자. 칸 위치가 전부 백분율이라 크기가 변해도
   자바스크립트가 다시 계산할 일이 없다 (가로 9w, 세로 14s → 비율 9√3/14). */
.sl-board {
  position: relative;
  width: 100%;
  max-width: 340px;
  aspect-ratio: 1.1135;
  flex: 0 1 auto;
}

.sl-hex {
  position: absolute;
  width: 11.111%;
  height: 14.286%;
  padding: 0;
  border: none;
  background: #141b24;
  color: transparent;
  font: inherit;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  font-size: clamp(11px, 3.2vw, 15px);
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  transform: scale(0.93);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.sl-hex.sl-p1 { background: #2f6fb8; color: #ffffff; }
.sl-hex.sl-p2 { background: #d9a23b; color: #14100a; }
.sl-hex.sl-neu { background: #6b7280; color: #ffffff; }
/* 지금 놓을 수 있는 칸. 빈 칸이면 놓이게 될 높이를 흐리게 미리 보여 준다.
   ⚠ 이미 말이 있는 칸에까지 배경을 덮어쓰면 안 된다 — 잡을 수 있는 상대 말이
   빈 칸처럼 보여서 주인 정보가 사라진다(실제로 한 번 그렇게 냈다). 그쪽은
   배경 대신 안쪽 흰 테두리로 "여기 덮어쓸 수 있음"만 표시한다. */
.sl-hex.sl-can:not(.sl-p1):not(.sl-p2):not(.sl-neu) { color: #7f9ec4; background: #1b2430; }
.sl-hex.sl-can.sl-p1, .sl-hex.sl-can.sl-p2, .sl-hex.sl-can.sl-neu {
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.34);
}
/* 고른 칸과, 그 칸을 보고 있는 내 말들 */
.sl-hex.sl-sel { outline: 3px solid #eaf2ff; outline-offset: -3px; }
.sl-hex.sl-eye { outline: 3px solid #8fd0a0; outline-offset: -3px; }
.sl-hex:disabled { cursor: default; }

.sl-bar {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; max-width: 340px;
  font-size: 12.5px; font-weight: 800;
}
.sl-you, .sl-rival {
  flex: 1 1 0; text-align: center; border-radius: 9px; padding: 6px 4px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.sl-you { background: #17304b; color: #cfe3ff; }
.sl-rival { background: #3a2e13; color: #f2dca6; }

.sl-go {
  width: 100%; max-width: 340px;
  font: inherit; font-weight: 800; font-size: 15px;
  /* 흰 글자 대 #4f9eff 는 2.74:1 (AA 미달). 파랑은 두고 글자를 어둡게 → 7.2:1. */
  color: #0a0a0a; background: #4f9eff;
  border: none; border-radius: 12px; min-height: 52px; padding: 0 14px;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.sl-go:active { background: #3d8ae8; }
.sl-go:disabled { background: #232a33; color: #98a3b4; cursor: default; }

.sl-pass {
  font: inherit; font-size: 12px; font-weight: 800;
  color: #cbd5e3; background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px; padding: 7px 14px; min-height: 32px;
  cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.sl-pass:disabled { opacity: 0.45; cursor: default; }

.sl-msg { font-size: 12px; font-weight: 700; color: #a8b4c4; text-align: center; min-height: 15px; padding: 0 6px; }

.overlay-howto {
  margin: 0; font-size: 13px; line-height: 1.55; color: #c9c9c9;
  text-align: left; white-space: pre-line; max-height: 46vh;
  overflow-y: auto; touch-action: pan-y;
}
.overlay-sub { margin: 0; font-size: 13px; color: #a0a0a0; }
.overlay-score { font-variant-numeric: tabular-nums; }

/* 세로가 짧은 화면에서 아래 조작 요소가 밀려나지 않게 압축 */
@media (max-height: 660px) {
  .sl-wrap { gap: 6px; }
  .sl-go { min-height: 44px; font-size: 14px; }
  .sl-board { max-width: 290px; }
}