/* Costas Array Game — scoped to .costas-game, matches site theme */

.costas-game {
  padding: 1.5rem;
}

.costas-desc-btn {
  display: block;
  margin-bottom: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-primary, #1a365d);
  color: white;
  border: none;
  border-radius: var(--radius, 8px);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s;
}
.costas-desc-btn:hover {
  background: var(--color-primary-light, #2c5282);
}

.costas-desc {
  margin-bottom: 1.25rem;
  padding: 0.75rem 1rem;
  background: var(--color-bg, #f7f8fa);
  border-radius: var(--radius, 8px);
  font-size: 0.95rem;
  color: var(--color-text-muted, #718096);
}

.costas-container {
  display: flex;
  justify-content: center;
  margin: 1rem 0;
}

.costas-grid {
  display: grid;
  grid-gap: 4px;
  padding: 8px;
  background: var(--color-border, #e2e8f0);
  border-radius: var(--radius, 8px);
}

.costas-grid .cell {
  width: 60px;
  height: 60px;
  background: var(--color-surface, #fff);
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s;
}
.costas-grid .cell:hover {
  background: #edf2f7;
}
.costas-grid .cell.active {
  background: var(--color-primary, #1a365d);
}
.costas-grid .cell.error {
  background: #c53030;
}

.costas-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

.costas-score {
  font-weight: 600;
  color: var(--color-primary, #1a365d);
}
.costas-size {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.costas-size label { font-size: 0.9rem; }
.costas-size select {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--color-border, #e2e8f0);
  border-radius: var(--radius, 8px);
  font-size: 0.95rem;
  background: var(--color-surface, #fff);
}
.costas-btn {
  padding: 0.5rem 1rem;
  background: var(--color-primary, #1a365d);
  color: white;
  border: none;
  border-radius: var(--radius, 8px);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}
.costas-btn:hover {
  background: var(--color-primary-light, #2c5282);
}

@media (max-width: 500px) {
  .costas-grid .cell {
    width: 40px;
    height: 40px;
  }
}