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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  color: #333;
  background: #f5f5f5;
  line-height: 1.5;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 24px;
}

.header {
  text-align: center;
  margin-bottom: 32px;
}

.header h1 {
  font-size: 24px;
  font-weight: 600;
  color: #1a73e8;
  margin-bottom: 8px;
}

.header .subtitle {
  font-size: 14px;
  color: #666;
}

.form {
  background: #fff;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  margin-bottom: 24px;
}

.form-section {
  margin-bottom: 24px;
}

.form-section:last-of-type {
  margin-bottom: 0;
}

.form-section h2 {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e0e0e0;
}

.form-group {
  margin-bottom: 16px;
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: #333;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: #1a73e8;
}

.input-group {
  display: flex;
  gap: 8px;
}

.input-group input {
  flex: 1;
}

.btn-icon {
  padding: 10px 16px;
  background: #e0e0e0;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  white-space: nowrap;
}

.btn-icon:hover {
  background: #d0d0d0;
}

.help-text {
  font-size: 12px;
  color: #666;
  margin-top: 4px;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid #e0e0e0;
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-primary {
  background: #1a73e8;
  color: #fff;
}

.btn-primary:hover {
  background: #1557b0;
}

.btn-primary:disabled {
  background: #ccc;
  cursor: not-allowed;
}

.btn-secondary {
  background: #e0e0e0;
  color: #333;
}

.btn-secondary:hover {
  background: #d0d0d0;
}

.message {
  margin-top: 16px;
  padding: 12px;
  border-radius: 4px;
  font-size: 13px;
}

.message.success {
  background: #e8f5e9;
  color: #2e7d32;
}

.message.error {
  background: #ffebee;
  color: #c62828;
}

.info-section {
  background: #fff;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.info-section h2 {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  margin-bottom: 16px;
}

.info-section ol {
  padding-left: 20px;
}

.info-section li {
  margin-bottom: 8px;
  color: #666;
}

.info-section li:last-child {
  margin-bottom: 0;
}