* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: system-ui, sans-serif;
  background: #365314;
  color: #ecfccb;
  text-align: center;
}

:focus-visible {
  outline: 2px solid #fbbf24;
  outline-offset: 2px;
}

.hud {
  width: 100%;
  padding: 0.75rem;
  background: #1a2e05;
}

.hud h1 {
  margin: 0;
  font-size: 1.25rem;
}

.hud__score {
  margin: 0.25rem 0 0;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(9, minmax(28px, 36px));
  gap: 3px;
  padding: 6px;
  border-radius: 8px;
  background: #1a2e05;
}

.cell {
  aspect-ratio: 1;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: #65a30d;
  color: #1a2e05;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
  font-variant-numeric: tabular-nums;
}

.cell:hover:not(:disabled) {
  background: #84cc16;
}

.cell.open {
  background: #ecfccb;
  cursor: default;
}

.cell.flagged {
  background: #facc15;
}

.cell.boom {
  background: #ef4444;
}

.cell:disabled {
  cursor: default;
}

.n1 { color: #1d4ed8; }
.n2 { color: #15803d; }
.n3 { color: #dc2626; }
.n4 { color: #6d28d9; }
.n5 { color: #b45309; }
.n6 { color: #0e7490; }
.n7 { color: #111827; }
.n8 { color: #6b7280; }

.status {
  min-height: 1.5rem;
  margin: 0;
  font-weight: 600;
}

.controls {
  display: flex;
  gap: 0.75rem;
}

.button {
  padding: 0.5rem 1.25rem;
  border: 0;
  border-radius: 8px;
  background: #a3e635;
  color: #1a2e05;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  touch-action: manipulation;
}

.button:hover {
  background: #bef264;
}

.button[aria-pressed='true'] {
  background: #facc15;
}

.hint {
  margin: 0;
  max-width: 320px;
  color: #d9f99d;
  font-size: 0.875rem;
}