/* チャートセクション */

.speed-control {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 14px;
  color: #333;
}

.speed-control label {
  font-weight: 600;
  white-space: nowrap;
}

.speed-control select {
  padding: 5px 10px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 14px;
  background: white;
  cursor: pointer;
}

.speed-control select:focus {
  outline: none;
  border-color: #0284c7;
}

.playback-btn {
  padding: 5px 14px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.play-btn {
  background: #0284c7;
  color: white;
  border-color: #0284c7;
}

.play-btn:hover:not(:disabled) {
  background: #0369a1;
  border-color: #0369a1;
}

.stop-btn {
  background: white;
  color: #333;
}

.stop-btn:hover:not(:disabled) {
  background: #fee2e2;
  border-color: #ef4444;
  color: #ef4444;
}

.playback-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.loading-message {
  text-align: center;
  padding: 60px 0;
  color: #666;
  font-size: 1.1em;
}

/* データ活用ガイド */