/* Merge — daily sliding-tile board. */

.game-head { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-3); }
.head-btns { display: flex; gap: 6px; }

.mg-relay-banner {
  margin: var(--space-3) 0 0;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
  font-size: 0.9rem;
}
.mg-relay-banner.stale { border-color: var(--warn); background: color-mix(in srgb, var(--warn) 12%, var(--surface)); }

.mg-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: var(--space-3) 0; flex-wrap: wrap; }

.stage-wrap {
  position: relative;
  width: min(92vw, 400px);
  margin: 0 auto var(--space-3);
}

.mg-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 8px;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.mg-cell {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  /* Long numbers must shrink rather than overflow the tile. */
  font-size: clamp(0.85rem, 5.2vw, 1.7rem);
  color: #0b0d14;
  transition: background 120ms var(--ease);
}
.mg-cell:not([class*=" v"]) { color: transparent; }

/* Warm ramp: each step up is visibly hotter, so progress reads at a glance. */
.mg-cell.v1  { background: #e8e3d8; }
.mg-cell.v2  { background: #e5d9b8; }
.mg-cell.v3  { background: #f0b27a; }
.mg-cell.v4  { background: #ef8354; }
.mg-cell.v5  { background: #ee6c4d; }
.mg-cell.v6  { background: #e5484d; color: #fff; }
.mg-cell.v7  { background: #d6409f; color: #fff; }
.mg-cell.v8  { background: #a855f7; color: #fff; }
.mg-cell.v9  { background: #7c3aed; color: #fff; }
.mg-cell.v10 { background: #4f46e5; color: #fff; }
.mg-cell.v11 { background: #0ea5e9; color: #fff; }
.mg-cell.v12 { background: #059669; color: #fff; box-shadow: 0 0 18px rgba(5, 150, 105, 0.7); }
.mg-cell.v9, .mg-cell.v10, .mg-cell.v11, .mg-cell.v12 { font-size: clamp(0.7rem, 4.2vw, 1.35rem); }

@keyframes mg-pop { 0% { transform: scale(0.6); } 70% { transform: scale(1.08); } 100% { transform: scale(1); } }
.mg-cell.pop { animation: mg-pop 170ms var(--ease); }

.overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 10px; text-align: center; padding: var(--space-4);
  background: rgba(6, 7, 12, 0.82);
  backdrop-filter: blur(5px);
  border-radius: var(--radius);
}
.over-kicker { letter-spacing: 0.28em; font-size: 0.72rem; font-weight: 800; color: var(--accent-text); }
.over-score {
  font-size: 3.6rem; font-weight: 850; line-height: 1;
  color: var(--accent-text); font-variant-numeric: tabular-nums;
}
.over-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

/* Arrow pad: up on top, then left / down / right, mirroring the keys. */
.mg-pad {
  display: grid;
  grid-template-columns: repeat(3, 56px);
  grid-template-rows: repeat(2, 48px);
  gap: 8px;
  justify-content: center;
  margin-bottom: var(--space-3);
}
.mg-dir { font-size: 1.2rem; min-height: 48px; }
#dir-up { grid-column: 2; grid-row: 1; }
#dir-left { grid-column: 1; grid-row: 2; }
#dir-down { grid-column: 2; grid-row: 2; }
#dir-right { grid-column: 3; grid-row: 2; }

.mg-actions { display: grid; gap: 8px; margin-bottom: var(--space-3); }