/* レイアウト共通 */
.page-container {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  text-align: center;
  overflow-x: hidden;
  z-index: 0;
}

/* ヘッダー・フッター */
header,
footer {
  background-color: var(--header-bg);
  color: var(--white);
  text-align: center;
  padding: 1em 0;
}

/* コンテナ共通 */
.container {
  max-width: var(--container-max-width);
  padding: var(--container-padding);
} 

.title {
  color: var(--white);
  font-family: var(--title-font);
  font-size: 72px;
  font-weight: bold;
  line-height: 1.5;
  letter-spacing: 0.05em;
}

/* セクションタイトル */
.section-title {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  text-align: center;
  margin-bottom: 40px;
}

.section-title h3 {
  font-size: 1.8em;
  display: flex;
  justify-content: center;
  align-items: center;
}

.section-title .subtitle {
  background-color: var(--black);
  color: var(--white);
  padding: 0 10px;
  margin-left: 10px;
  font-size: 0.8em;
  border-radius: 8px;
}

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: white;
  z-index: 9999;
  pointer-events: none;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .section-title h3 {
    font-size: 2em;
  }
}