* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #a8edea, #fed6e3);
  font-family: system-ui, sans-serif;
}

.title {
  margin-bottom: 1rem;
  color: #333;
}

#btns {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

button {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  background-color: #333;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out;
}

button:hover {
  background-color: #555;
  transform: translateY(-2px);
}

#grid {
  display: grid;
  width: 80vmin;
  height: 80vmin;
  max-width: 600px;
  max-height: 600px;
  border: 5px solid #333;
  border-radius: 10px;
  background-color: #fff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.gridBlock,
.gridBlockOn {
  aspect-ratio: 1/1;
}

.gridBlock {
  background-color: transparent;
}

.gridBlockOn {
  background-color: #333;
}

@media (max-width: 600px) {
  button {
    font-size: 0.9rem;
    padding: 0.4rem 0.8rem;
  }
}

.hidden {
  display: none;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}


.modal-content {
  background-color: #fff;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: center;
}

.modal-content input {
  padding: 0.5rem;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 1rem;
}

.modal-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}