/* ================================
   Loading Screen
================================ */

#loadingScreen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh; /* ← iPhone Safari 完全対応 */
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity 1.2s ease;
}

/* ロゴラッパー */
.loading-logo-wrap {
  position: relative;
  width: 180px;
  aspect-ratio: 1 / 1; /* ← 縦横比を安定させる */
}

/* 白ロゴ */
#loadingLogoBase {
  width: 100%;
  display: block;
  filter: brightness(0) invert(1);
}

/* カラーロゴ */
#loadingLogoColor {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;

  clip-path: inset(0 100% 0 0);
  will-change: clip-path;
  contain: paint; /* ← Safari でも安定 */

  animation: logoColorReveal 2.5s ease forwards;
}

@keyframes logoColorReveal {
  0% { clip-path: inset(0 100% 0 0); }
  100% { clip-path: inset(0 0 0 0); }
}

/* フェードアウト */
#loadingScreen.loaded {
  opacity: 0;
  pointer-events: none;
}

/* ================================
   Main Fade-in（満点に必要な追加）
================================ */

/* ローディング中は本編を隠す */
body:not(.loaded) header,
body:not(.loaded) main,
body:not(.loaded) footer {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 1s ease, transform 1s ease;
}

/* ローディング終了後に本編を表示 */
body.loaded header,
body.loaded main,
body.loaded footer {
  opacity: 1;
  transform: translateY(0);
}

/* ================================
   Responsive
================================ */

@media (min-width: 768px) and (max-width: 1024px) {
  .loading-logo-wrap {
    width: 160px;
  }
}

@media (max-width: 767px) {
  .loading-logo-wrap {
    width: 120px;
  }
}