: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(58px, env(safe-area-inset-top)) 10px max(14px, env(safe-area-inset-bottom));
  gap: 8px;
}
.score-bar { display: flex; gap: 6px; align-items: stretch; }
.score-box { flex: 1; background: #161616; border: 1px solid #2a2a2a; border-radius: 12px; padding: 6px 6px; text-align: center; min-width: 0; }
.score-label { display: block; font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: #a0a0a0; white-space: nowrap; }
.turns-val, .claims-val, .best-val { display: block; font-size: 19px; font-weight: 800; font-variant-numeric: tabular-nums; color: #f5f5f5; margin-top: 1px; line-height: 1.1; }
.new-btn { flex: 0 0 auto; font: inherit; color: #fff; background: #4f9eff; border: none; border-radius: 12px; padding: 0 14px; min-height: 48px; cursor: pointer; font-weight: 700; font-size: 14px; -webkit-tap-highlight-color: transparent; }
.new-btn:active { background: #3d8ae8; }

/* ─── board: 11 columns, mountain (center tallest), bottom-aligned ─── */
.board { flex: 1 1 auto; min-height: 0; display: flex; align-items: flex-end; justify-content: center; gap: 3px; padding: 4px 0; }
.board.bust { animation: shake 0.5s; }
@keyframes shake { 0%,100%{transform:translateX(0)} 20%,60%{transform:translateX(-6px)} 40%,80%{transform:translateX(6px)} }
.col { display: flex; flex-direction: column; align-items: center; gap: 3px; flex: 1 1 0; min-width: 0; max-width: 34px; }
.track { display: flex; flex-direction: column-reverse; gap: 2px; width: 100%; }
.cell {
  width: 100%; aspect-ratio: 1 / 1; max-height: 22px; border-radius: 4px;
  background: #1c1f26; border: 1px solid #2c313b;
}
.cell.filled { background: #3a6ea5; border-color: #4f8fcf; }      /* banked */
.cell.temp   { background: #c9772e; border-color: #e0903f; }      /* gained this turn */
.cell.runner { background: #ffb454; border-color: #ffd089; box-shadow: 0 0 6px rgba(255,180,84,0.7); }
.cell.done   { background: #3fae6a; border-color: #5fd089; }      /* claimed column */
.col.claimed .col-label { color: #5fd089; }
.col-label { font-size: 11px; font-weight: 800; color: #9aa0aa; font-variant-numeric: tabular-nums; line-height: 1; }

/* dice */
.dice { display: flex; justify-content: center; gap: 8px; min-height: 40px; align-items: center; }
.dice.empty { min-height: 40px; }
.die { font-size: 38px; line-height: 1; color: #f5f5f5; }

.message { margin: 0; text-align: center; font-size: 13px; line-height: 1.3; color: #c4c0b6; min-height: 2.2em; display: flex; align-items: center; justify-content: center; padding: 0 6px; }

/* controls */
.controls { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; min-height: 52px; }
.act-btn, .opt-btn { font: inherit; border-radius: 12px; min-height: 50px; cursor: pointer; font-weight: 800; -webkit-tap-highlight-color: transparent; border: 1px solid; }
.opt-btn { flex: 1 1 0; min-width: 90px; max-width: 150px; font-size: 17px; color: #fff; background: #2a2d34; border-color: #3a3f4a; font-variant-numeric: tabular-nums; }
.opt-btn:active { background: #353a44; }
.act-btn { flex: 1 1 0; min-width: 120px; max-width: 200px; font-size: 15px; padding: 0 16px; }
.roll-btn { color: #fff; background: #4f9eff; border-color: #4f9eff; }
.roll-btn:active { background: #3d8ae8; }
.stop-btn { color: #fff; background: #3fae6a; border-color: #3fae6a; }
.stop-btn:active { background: #339158; }

/* 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; border: none; cursor: pointer; font-family: inherit;
  -webkit-tap-highlight-color: transparent; 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)); }
@media (hover: hover) { .home-link:hover, .hof-link:hover { background: rgba(0,0,0,0.55); } }

/* overlay */
.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-score .unit { font-size: 20px; font-weight: 600; color: #c0c0c0; margin-left: 6px; letter-spacing: 0; }
.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; }