body {
  font-family: "Segoe UI", sans-serif;
  background: linear-gradient(135deg, #0f172a, #1e293b);
  color: white;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
}

.container {
  text-align: center;
  margin-top: 40px;
  background: #1e293b;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.3);
  width: 85%;
  max-width: 800px;
}

h1 {
  color: #38bdf8;
  margin-bottom: 20px;
}

.init-section,
.action-section {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 15px;
}

input,
select {
  padding: 8px 10px;
  border-radius: 8px;
  border: none;
  outline: none;
  font-size: 14px;
}

button {
  background: #2563eb;
  color: white;
  border: none;
  padding: 8px 12px;
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

button:hover {
  background: #1e40af;
  transform: scale(1.05);
}

.memory-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(30px, 1fr));
  gap: 4px;
  justify-items: center;
  margin-top: 15px;
}

.cell {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  background: #334155;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: background 0.3s ease, transform 0.3s ease;
}

.cell.moved {
  background-color: #4ade80;
  transform: scale(1.2);
}

#infoBox {
  margin-bottom: 10px;
  color: #a5f3fc;
  font-size: 16px;
}