/* General styles */
body {
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  background-color: #f0f0f0;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px;
}

h1 {
  font-size: 24px;
  margin-bottom: 20px;
  color: #333;
}

/* Centered grid container with fixed aspect ratio */
.grid-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 80vw;
  max-width: 80vh; /* Prevent overflow beyond viewport height */
  max-height: 80vh;
  box-sizing: border-box;
}

.container {
  display: grid;
  width: 100%;
  height: 100%;
  grid-template-columns: repeat(16, 1fr);
  border: 2px solid #333; /* Border for better visibility */
  box-sizing: border-box;
}

/* Square grid cells */
.square {
  background-color: white;
  border: 1px solid #ccc;
  transition: background-color 0.3s ease; /* Smooth transition */
  aspect-ratio: 1 / 1; /* Keep squares in equal height/width */
}

/* Hover effect */
.square:hover,
.square:focus {
  background-color: lightblue;
  outline: none;
}

/* Button styling */
button {
  padding: 12px 20px;
  margin-top: 20px;
  font-size: 16px;
  font-weight: bold;
  border: 2px solid #333;
  border-radius: 8px;
  background-color: white;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
  min-width: 48px; /* Ensure minimum width for touch targets */
  min-height: 48px; /* Ensure minimum height for touch targets */
}

button:hover,
button:focus {
  background-color: #333;
  color: white;
  transform: scale(1.05);
}

button:active {
  transform: scale(0.95);
}

/* Responsiveness for smaller screens */
@media (max-width: 600px) {
  h1 {
    font-size: 20px;
  }

  button {
    font-size: 14px;
    padding: 10px 16px;
  }

  .grid-wrapper {
    width: 90vw;
    max-width: 90vh;
  }
}