/* Shared styles for index.html + history.html */
:root {
  --bg: #F7F5F0;
  --text: #1C1A18;
  --muted: #7D7A72;
  --accent: #A07850;
  --border: #E2DED7;
  --nav-h: 60px;
  --px: clamp(28px, 7vw, 100px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Jost', sans-serif;
  font-weight: 300;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.lang-en .ja { display: none !important; }
.lang-ja .en { display: none !important; }
.lang-ja body { font-family: 'Noto Sans JP', sans-serif; }

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--px);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.lang-ja .nav-name { font-family: 'Noto Serif JP', serif; font-weight: 400; }

.nav-home-icon { font-size: 1.75rem; line-height: 1; }

.nav-right { display: flex; align-items: center; gap: 28px; }

.nav-link {
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
  transition: color 0.2s;
}
.lang-ja .nav-link {
  text-transform: none;
  letter-spacing: 0.04em;
  font-family: 'Noto Sans JP', sans-serif;
}
.nav-link:hover { color: var(--text); }

.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.lang-btn {
  padding: 3px 10px;
  font-family: 'Jost', sans-serif;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all 0.18s;
  line-height: 1.8;
}
.lang-btn + .lang-btn { border-left: 1px solid var(--border); }
.lang-btn.active { background: var(--text); color: var(--bg); }

/* ── Main ── */
main { padding-top: var(--nav-h); }

/* Shared section label */
.section-label {
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 40px;
}
.lang-ja .section-label {
  text-transform: none;
  letter-spacing: 0.06em;
  font-family: 'Noto Sans JP', sans-serif;
}

/* ── Footer ── */
footer {
  padding: 20px var(--px);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-copy { font-size: 0.75rem; color: var(--muted); }
.footer-link {
  font-size: 0.75rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-link:hover { color: var(--text); }
.lang-ja .footer-copy,
.lang-ja .footer-link { font-family: 'Noto Sans JP', sans-serif; }

/* ── Responsive ── */
@media (max-width: 720px) {
  .nav-right { gap: 16px; }
}