html {
    font-family: Arial, sans-serif;
    background-color: #222222;
}

body {
  font-family: Arial, sans-serif;
  background-color: #222222;
}

#grid-helper {
  background: #1f1f1f;
  color: #e6e6e6;
  text-align: center;
  padding: 20px;
  margin: 20px auto;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.3);
  max-width: 800px;
}

#grid-helper h2 {
  font-weight: 600;
  font-size: 1.3rem;
  margin-bottom: 8px;
}

#grid-helper .description {
  color: #b0b0b0;
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.grid-helper-controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.grid-helper-controls input {
  background: #2a2a2a;
  color: #fff;
  border: 1px solid #444;
  border-radius: 6px;
  padding: 6px 10px;
}

.grid-helper-preview {
  display: flex;
  justify-content: center;
  align-items: center;
}

#gridCanvas {
  max-width: 100%;
  border: 1px solid #555;
  border-radius: 8px;
  background-color: #474747;
}

.grid-info {
  margin-top: 10px;
  font-size: 0.9rem;
  color: #b5ff9e;
  font-weight: bold;
}