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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  background-color: #f5f5f5;
  padding: 20px;
  line-height: 1.6;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

h1 {
  color: #333;
  margin-bottom: 10px;
}

.description {
  color: #666;
  margin-bottom: 20px;
}

.info-box {
  background-color: #e3f2fd;
  border-left: 4px solid #2196f3;
  padding: 12px;
  margin-bottom: 20px;
  font-size: 14px;
}

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-weight: bold;
  margin-bottom: 8px;
  color: #333;
}

textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: monospace;
  font-size: 14px;
  resize: vertical;
}

select {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
}

button {
  background-color: #4caf50;
  color: white;
  padding: 12px 24px;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s;
}

button:hover {
  background-color: #45a049;
}

button:disabled {
  background-color: #cccccc;
  cursor: not-allowed;
}

/* 情報ボックス内のリスト */
.info-list {
  list-style: none;
  padding-left: 0;
  margin: 10px 0 0;
}

.info-list li {
  margin: 4px 0;
}

/* 共通の上マージンユーティリティ */
.loading,
.errors,
.results {
  margin-top: 20px;
}

.loading {
  text-align: center;
}

.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid #4caf50;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error-item {
  background-color: #ffebee;
  border-left: 4px solid #f44336;
  padding: 12px;
  margin-bottom: 10px;
  border-radius: 4px;
}

.error-item strong {
  color: #c62828;
}

.channel-section {
  margin-bottom: 30px;
  padding: 20px;
  background-color: #fafafa;
  border-radius: 4px;
  border: 1px solid #e0e0e0;
}

.channel-header {
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 2px solid #4caf50;
}

.output-block {
  margin-bottom: 20px;
}

.output-block h3 {
  font-size: 14px;
  color: #666;
  margin-bottom: 8px;
}

.output-block pre {
  background-color: #263238;
  color: #f4ffd7;
  padding: 15px;
  border-radius: 4px;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.output-block pre code {
  background: none;
  padding: 0;
}