/* General Styles */
body {
  font-family: 'Arial', sans-serif;
  text-align: center;
  margin: 0;
  padding: 0;
  background: linear-gradient(to right, #000000, #000000);
}

/* Header Styling */
.header {
  padding: 20px;
  background-color: #000000;
  text-align: center;
  font-size: 24px;
  font-weight: bold;
  color: white;
}

/* Contenedor en una sola columna */
.container {
  max-width: 500px;
  margin: 40px auto;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
  background: white;
  text-align: center;
}

/* Inputs */
input {
  width: 90%;
  padding: 10px;
  margin-top: 10px;
  border-radius: 5px;
  border: 1px solid #ccc;
}

/* Button Styles */
button {
  font-size: 18px;
  padding: 12px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin-top: 10px;
  transition: all 0.3s ease-in-out;
  width: 100%;
}

button.locked {
  background-color: #ccc;
  cursor: not-allowed;
  color: #666;
}

button.unlocked {
  background-color: #007BFF;
  color: white;
}

button.unlocked:hover {
  background-color: #0056b3;
  transform: scale(1.05);
}