#sidebar {
  width: 300px;
  height: 100vh;
  flex-shrink: 0;
  overflow-y: auto;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
}

main {
  min-height: 100vh;
  overflow-y: auto;
}

textarea {
  font-size: 1rem;
}

.result-content h1, .result-content h2, .result-content h3 {
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.result-content p {
  margin-bottom: 0.5rem;
}

.result-content ul, .result-content ol {
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
}

.alert {
  white-space: pre-wrap;
}

/* ローディングオーバーレイ */
#loadingOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.loading-box {
  background: #fff;
  border-radius: 12px;
  padding: 2.5rem 3rem;
  text-align: center;
  box-shadow: 0 4px 32px rgba(0,0,0,0.25);
}