:root {
  --accent: #22c55e;
  --accent-text: #000;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.game-wrapper { gap: 1.5rem; }

/* Difficulty selector */
.difficulty {
  display: flex;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.4rem;
}

.diff-btn {
  padding: 0.45rem 1.1rem;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.diff-btn:hover { background: var(--surface2); color: var(--text); }

.diff-btn.active {
  background: var(--accent);
  color: var(--accent-text);
}

/* HUD */
.hud {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.75rem 1.5rem;
  font-family: 'Courier New', monospace;
  font-weight: 700;
  font-size: 1.1rem;
}

.hud-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text);
}

.hud-icon { font-size: 1.2rem; }

.reset-btn {
  font-size: 1.6rem;
  background: none;
  border: none;
  cursor: pointer;
  transition: transform 0.1s;
  line-height: 1;
}

.reset-btn:hover  { transform: scale(1.2); }
.reset-btn:active { transform: scale(0.9); }

/* Board */
.board-container {
  overflow: auto;
  max-width: 100vw;
}

#board {
  display: inline-grid;
  gap: 2px;
  padding: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  user-select: none;
}

.cell {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.08s, transform 0.08s;
  border: 1px solid transparent;
}

.cell.hidden {
  background: var(--surface2);
  border-color: var(--border);
}

.cell.hidden:hover {
  background: #252545;
  transform: scale(1.08);
}

.cell.hidden:active { transform: scale(0.95); }

.cell.flagged {
  background: var(--surface2);
  border-color: #f59e0b;
}

.cell.revealed {
  background: transparent;
  cursor: default;
  border-color: transparent;
}

.cell.mine-hit  { background: #7f1d1d !important; }
.cell.mine-shown { background: #1c1c1c; cursor: default; }

/* Number colors */
.n1 { color: #60a5fa; }
.n2 { color: #4ade80; }
.n3 { color: #f87171; }
.n4 { color: #a78bfa; }
.n5 { color: #fb923c; }
.n6 { color: #22d3ee; }
.n7 { color: #f9a8d4; }
.n8 { color: var(--text-muted); }

/* Overlay tweak */
.overlay-box { gap: 1rem; }

/* Status hint */
.status-hint {
  font-size: 0.82rem;
  color: var(--text-muted);
  text-align: center;
}