* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #1b1b1b;
  min-height: 100vh;
  color: #e0e0e0;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
}

.code-card {
  background: #252525;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.code-card h2 {
  text-align: center;
  margin-bottom: 15px;
  color: #ffffff;
}

.code-image {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  background: #ffffff;
  border-radius: 8px;
}

.code-image img {
  max-width: 100%;
  height: auto;
}

.code-selector {
  margin-bottom: 20px;
  text-align: center;
}

.code-selector select {
  padding: 8px 16px;
  font-size: 16px;
  border-radius: 6px;
  background-color: #252525;
  color: #e0e0e0;
  border: 1px solid #404040;
  cursor: pointer;
}

.code-selector select:focus {
  outline: none;
  border-color: #505050;
}

@media (max-width: 480px) {
  .container {
    padding: 10px;
  }

  .code-card {
    padding: 15px;
    margin-bottom: 15px;
  }
}