: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)) 14px max(16px, env(safe-area-inset-bottom));
  gap: 12px;
}
.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; }
.streak-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; }

.message { margin: 0; text-align: center; font-size: 14px; font-weight: 600; color: #c7c7d0; min-height: 18px; }

/* 예비 트레이 */
.tray { display: flex; justify-content: center; gap: 6px; }
.tray-slot { width: 15%; max-width: 54px; aspect-ratio: 1; border-radius: 12px; background: #14141c; border: 1px solid #24242e; display: flex; align-items: center; justify-content: center; position: relative; }
.tray-slot.empty { background: #0f0f14; border-style: dashed; }
.tray-slot.tappable { cursor: pointer; }
.tray-slot.sel { box-shadow: inset 0 0 0 3px rgba(79,158,255,0.9); background: #1c1c28; }
.ai-tray .tray-slot { opacity: 0.92; }

/* 3×3 보드 */
.board {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
  width: min(88vw, 52vh, 380px); aspect-ratio: 1; margin: 0 auto;
  padding: 8px; background: #14141c; border: 1px solid #24242e; border-radius: 16px;
}
.cell {
  background: #1d1d26; border-radius: 12px;
  display: flex; align-items: center; justify-content: center; position: relative;
  transition: background 0.12s ease;
}
.cell.mine { cursor: pointer; }
.cell.sel { box-shadow: inset 0 0 0 3px rgba(79,158,255,0.9); background: #232333; }
.cell.target { cursor: pointer; }
.cell.target::after { content: ''; position: absolute; width: 22%; height: 22%; border-radius: 50%; background: rgba(79,158,255,0.55); box-shadow: 0 0 8px rgba(79,158,255,0.4); z-index: 3; }
.cell.target:active { background: #262633; }
.cell.last::before { content: ''; position: absolute; inset: 3px; border-radius: 9px; box-shadow: inset 0 0 0 2px rgba(255,255,255,0.22); pointer-events: none; z-index: 2; }
/* 스택 표시(밑에 뭔가 있음) */
.cell.stacked::after { content: ''; position: absolute; top: 6px; right: 6px; width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,0.35); box-shadow: 0 0 0 2px rgba(0,0,0,0.4); z-index: 4; }

/* 말 (owner 색 × size) */
.piece { border-radius: 50%; flex: 0 0 auto; position: relative; }
.piece.sz-0 { width: 42%; height: 42%; }
.piece.sz-1 { width: 64%; height: 64%; }
.piece.sz-2 { width: 86%; height: 86%; }
.tray-slot .piece.sz-0 { width: 40%; height: 40%; }
.tray-slot .piece.sz-1 { width: 62%; height: 62%; }
.tray-slot .piece.sz-2 { width: 84%; height: 84%; }
.piece.p-dark {
  background: radial-gradient(circle at 34% 28%, #5a5970, #17171f 80%);
  border: 2px solid #4b4b5a; box-shadow: 0 2px 5px rgba(0,0,0,0.55), inset 0 1px 2px rgba(255,255,255,0.12);
}
.piece.p-light {
  background: radial-gradient(circle at 34% 28%, #f6f1e2, #c9c0a4 78%);
  border: 2px solid #b0a889; box-shadow: 0 2px 5px rgba(0,0,0,0.5), inset 0 1px 2px rgba(255,255,255,0.4);
}

/* 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 */
.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: 52px; font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: -0.04em; line-height: 1; }
.overlay-score .unit { font-size: 18px; font-weight: 700; color: #a0a0a0; letter-spacing: 0; }
.overlay-meta { margin: -4px 0 4px; 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%; -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; }