/* Tea Ceremony Ju-An — Shared stylesheet
   Version is set via ?v= query parameter on the <link> tag in includes/head.php
   Update that parameter whenever this file changes (cache busting). */

:root {
  --washi: #f4efe5;
  --washi-warm: #ece5d6;
  --washi-deep: #e0d8c6;
  --sumi: #1a1815;
  --sumi-soft: #3a342d;
  --haiiro: #847b6e;
  --kinari: #c9bfae;
  --bengara: #8b3a28;
  --kincha: #b89968;
  --font-display: "Cormorant Garamond", "Shippori Mincho", serif;
  --font-japanese: "Shippori Mincho", serif;
  --font-body: "EB Garamond", "Shippori Mincho", serif;
  --font-meta: "Public Sans", -apple-system, sans-serif;
  --rule: 1px solid rgba(26, 24, 21, 0.18);
  --rule-soft: 1px solid rgba(26, 24, 21, 0.1);
  --container: 1340px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--sumi);
  background: var(--washi);
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--bengara); text-decoration: none; border-bottom: 1px solid rgba(139,58,40,0.3); }
a:hover { border-color: var(--bengara); }

/* ── Site nav (sub-pages) ── */
.site-nav {
  padding: 0;
  background: var(--washi);
  border-bottom: var(--rule-soft);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-nav__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.site-nav__brand {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  border-bottom: none;
  color: var(--sumi);
  text-decoration: none;
  flex-shrink: 0;
}
.site-nav__brand:hover { border-bottom: none; }
.site-nav__name {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--sumi);
  letter-spacing: 0.04em;
}
.site-nav__kanji {
  font-family: var(--font-japanese);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--sumi);
}
.site-nav__menu {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
}
.site-nav__menu a {
  font-family: var(--font-meta);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--sumi-soft);
  border-bottom: none;
  transition: color 0.2s;
}
.site-nav__menu a:hover { color: var(--sumi); border-bottom: none; }
.site-nav__menu .nav-book a {
  color: var(--bengara);
  border: 1px solid rgba(139,58,40,0.35);
  padding: 0.4rem 0.9rem;
  transition: background 0.2s, color 0.2s;
}
.site-nav__menu .nav-book a:hover { background: var(--bengara); color: var(--washi); border-color: var(--bengara); }

/* ── Site nav — mobile hamburger ── */
.site-nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 26px;
  height: 18px;
  position: relative;
  flex-shrink: 0;
  padding: 0;
}
.site-nav__toggle span {
  display: block;
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--sumi);
  transform: translateY(-50%);
}
.site-nav__toggle::before,
.site-nav__toggle::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--sumi);
}
.site-nav__toggle::before { top: 0; }
.site-nav__toggle::after { bottom: 0; }

@media (max-width: 640px) {
  .site-nav__toggle { display: block; }
  body .page { padding-top: 2.5rem; }
  .site-nav__menu {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--washi);
    border-bottom: var(--rule-soft);
    padding: 0.5rem var(--gutter) 1.5rem;
    flex-direction: column;
    gap: 0;
    z-index: 99;
  }
  .site-nav__menu--open { display: flex; }
  .site-nav__menu li { border-top: var(--rule-soft); }
  .site-nav__menu a { display: block; padding: 0.9rem 0; }
  .site-nav__menu .nav-home { display: list-item; }
  .site-nav__menu .nav-book a { border: none; padding: 0.9rem 0; }
}

/* ── Footer ── */
.footer {
  background: var(--washi);
  padding: 5rem 0 2.5rem;
  border-top: var(--rule-soft);
  margin-top: 6rem;
}
.footer .container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 4rem;
  border-bottom: var(--rule-soft);
}
.footer__brand .brand { margin-bottom: 1.2rem; display: flex; align-items: baseline; gap: 0.75rem; }
.footer__brand .brand__name { font-family: var(--font-display); font-style: italic; font-size: 1.1rem; color: var(--sumi); }
.footer__brand p {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--sumi-soft);
  max-width: 28ch;
  line-height: 1.6;
}
.footer__col h4 {
  font-family: var(--font-meta);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sumi);
  margin-bottom: 1.2rem;
}
.footer__col ul { list-style: none; display: grid; gap: 0.7rem; }
.footer__col a {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--sumi-soft);
  border-bottom: none;
  transition: color 0.2s;
}
.footer__col a:hover { color: var(--sumi); border-bottom: none; }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2.5rem;
  color: var(--haiiro);
  flex-wrap: wrap;
  gap: 1rem;
}
.meta {
  font-family: var(--font-meta);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--haiiro);
}
.jp { font-family: var(--font-japanese); }

@media (max-width: 860px) {
  .footer__inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer__bottom { flex-direction: column; gap: 1rem; align-items: flex-start; }
}
@media (max-width: 480px) {
  .footer__inner { grid-template-columns: 1fr; }
}