@import url('https://fonts.googleapis.com/css2?family=Zen+Old+Mincho:wght@400;500;700&family=Crimson+Pro:ital,wght@0,300;0,400;0,600;1,300;1,400;1,600&family=Noto+Sans+JP:wght@300;400&display=swap');

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

:root {
  --gold: #C9A84C;
  --gold-lt: #E8D5A3;
  --gold-dk: #9A7B2E;
  --ch: #2C2C2C;
  --gray: #5C5956;
  --pt: #B8B3A8;
  --pt-lt: #E4E0D8;
  --bg: #F5F2EC;
  --bg2: #EDEAE2;
  --cream: #FAF7F2;
  --white: #FFFFFF;
}

html, body {
  width: 100%; height: 100%;
  background: #1a1a1a;
  overflow: hidden;
  font-family: 'Zen Old Mincho', serif;
}

/* ─── ステージ（1920×1080固定） ─── */
#stage {
  position: fixed;
  top: 0; left: 0;
  width: 1920px;
  height: 1080px;
  transform-origin: top left;
}

/* ─── スライド共通 ─── */
.slide {
  width: 1920px;
  height: 1080px;
  position: absolute;
  top: 0; left: 0;
  overflow: hidden;
  display: none;
}
.slide.active { display: block; }
.slide-flex.active { display: flex; }
.slide-grid.active { display: grid; }

/* ─── ナビ ─── */
#nav {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(12px);
  border: 1px solid var(--pt-lt);
  border-radius: 40px;
  padding: 10px 24px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
#nav button {
  background: none; border: none; cursor: pointer;
  color: var(--pt);
  font-size: 18px;
  padding: 4px 10px;
  transition: color 0.2s;
  line-height: 1;
}
#nav button:hover { color: var(--gold-dk); }
#slide-counter {
  font-family: 'Crimson Pro', serif;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--pt);
  min-width: 56px;
  text-align: center;
}

/* ─── クリックゾーン ─── */
#click-prev, #click-next {
  position: fixed;
  top: 0; width: 50%; height: 100%;
  cursor: pointer;
  z-index: 50;
}
#click-prev { left: 0; }
#click-next { right: 0; }