/* ============================================================
   和モダン 共通スタイル — 抹茶・金・墨・白
   ============================================================ */
:root {
  --c-ink: #1a1612;
  --c-ink-soft: #3a332c;
  --c-paper: #faf7f2;
  --c-paper-warm: #f3ede1;
  --c-paper-card: #ffffff;
  --c-matcha-deep: #2f4a2d;
  --c-matcha: #4a6b42;
  --c-matcha-mid: #6b8e5a;
  --c-matcha-soft: #a8bf95;
  --c-matcha-wash: #e8ede0;
  --c-gold: #b8944a;
  --c-gold-bright: #d4b366;
  --c-gold-deep: #8a6b2e;
  --c-sumi: #0f0c08;
  --c-shu: #a83232;
  --c-line: rgba(26, 22, 18, 0.12);
  --c-line-gold: rgba(184, 148, 74, 0.35);

  --f-serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --f-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --f-en-serif: "Cormorant Garamond", "Noto Serif JP", serif;
  --f-en-caps: "Cinzel", "Cormorant Garamond", serif;

  --gold-leaf: linear-gradient(135deg, #8a6b2e 0%, #d4b366 25%, #f3deb1 45%, #b8944a 60%, #8a6b2e 85%);
  --gold-leaf-soft: linear-gradient(135deg, #b8944a 0%, #d4b366 50%, #b8944a 100%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--f-sans);
  font-weight: 300;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Tweakable root vars */
body[data-font="mincho"] { --f-active: var(--f-serif); }
body[data-font="gothic"] { --f-active: var(--f-sans); }
body[data-font="mix"] { --f-active: var(--f-sans); }

h1, h2, h3, h4 {
  font-family: var(--f-serif);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.4;
  margin: 0;
}
body[data-font="gothic"] h1,
body[data-font="gothic"] h2,
body[data-font="gothic"] h3,
body[data-font="gothic"] h4 { font-family: var(--f-sans); font-weight: 500; }

p { margin: 0; }

a { color: inherit; text-decoration: none; }

/* ---------- Gold leaf text ---------- */
.gold-leaf {
  background: var(--gold-leaf);
  background-size: 200% 200%;
  background-position: 50% 50%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}
body[data-gold="subtle"] .gold-leaf { background: var(--c-gold); -webkit-background-clip: text; background-clip: text; }
body[data-gold="strong"] .gold-leaf {
  background: var(--gold-leaf);
  background-size: 300% 300%;
  -webkit-background-clip: text; background-clip: text;
  filter: drop-shadow(0 1px 0 rgba(138, 107, 46, 0.3));
}

/* ---------- Header / language switcher ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(180deg, rgba(250, 247, 242, 0.92) 0%, rgba(250, 247, 242, 0.7) 60%, rgba(250, 247, 242, 0) 100%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.site-header.scrolled {
  background: rgba(250, 247, 242, 0.96);
  border-bottom: 1px solid var(--c-line-gold);
  box-shadow: 0 1px 0 rgba(184, 148, 74, 0.08);
}
.brand-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-serif);
  font-size: 15px;
  letter-spacing: 0.2em;
  color: var(--c-ink);
}
.brand-mark .seal {
  width: 34px; height: 34px;
  display: inline-flex;
  align-items: center; justify-content: center;
  background: var(--c-shu);
  color: #fff;
  font-family: var(--f-serif);
  font-size: 14px;
  border-radius: 2px;
  letter-spacing: 0;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.1) inset;
}

/* Language dropdown */
.lang-switch { position: relative; }
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--c-line-gold);
  color: var(--c-ink);
  font-family: var(--f-sans);
  font-size: 13px;
  letter-spacing: 0.1em;
  cursor: pointer;
  border-radius: 2px;
  transition: all .2s;
}
.lang-btn:hover { background: #fff; border-color: var(--c-gold); }
.lang-btn .chev { width: 10px; height: 10px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg) translate(-2px,-2px); transition: transform .2s; }
.lang-switch.open .lang-btn .chev { transform: rotate(225deg) translate(-2px,-2px); }
.lang-menu {
  position: absolute;
  top: calc(100% + 6px); right: 0;
  min-width: 160px;
  background: #fff;
  border: 1px solid var(--c-line-gold);
  border-radius: 2px;
  box-shadow: 0 8px 24px rgba(26, 22, 18, 0.12);
  padding: 6px;
  display: none;
}
.lang-switch.open .lang-menu { display: block; }
.lang-menu button {
  display: block;
  width: 100%;
  padding: 10px 14px;
  background: transparent;
  border: 0;
  text-align: left;
  font-size: 13px;
  letter-spacing: 0.08em;
  font-family: var(--f-sans);
  cursor: pointer;
  color: var(--c-ink);
  border-radius: 2px;
  transition: background .15s;
}
.lang-menu button:hover { background: var(--c-matcha-wash); }
.lang-menu button.active { background: var(--c-matcha-wash); color: var(--c-matcha-deep); font-weight: 500; }
.lang-menu button .flag { display: inline-block; width: 18px; color: var(--c-gold-deep); font-family: var(--f-en-caps); font-size: 11px; }

/* ---------- Kanji vertical accents ---------- */
.vert-label {
  writing-mode: vertical-rl;
  font-family: var(--f-serif);
  letter-spacing: 0.5em;
  color: var(--c-gold-deep);
  font-size: 13px;
}

/* ---------- Section base ---------- */
section { position: relative; }
.section-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 120px 48px;
}
.section-head {
  text-align: center;
  margin-bottom: 72px;
}
.section-head .eyebrow {
  font-family: var(--f-en-caps);
  font-size: 12px;
  letter-spacing: 0.45em;
  color: var(--c-gold-deep);
  text-transform: uppercase;
  margin-bottom: 18px;
  display: inline-block;
  position: relative;
  padding: 0 28px;
}
.section-head .eyebrow::before,
.section-head .eyebrow::after {
  content: "";
  position: absolute; top: 50%;
  width: 18px; height: 1px;
  background: var(--c-gold);
}
.section-head .eyebrow::before { left: 0; }
.section-head .eyebrow::after { right: 0; }
.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  margin-bottom: 14px;
  color: var(--c-ink);
}
.section-head .sub {
  font-family: var(--f-en-serif);
  font-style: italic;
  color: var(--c-ink-soft);
  opacity: 0.7;
  font-size: 16px;
  letter-spacing: 0.05em;
}

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center; justify-content: center;
  gap: 12px;
  padding: 20px 40px;
  background: var(--c-matcha-deep);
  color: var(--c-paper);
  font-family: var(--f-serif);
  font-weight: 400;
  font-size: 16px;
  letter-spacing: 0.2em;
  border: 0;
  border-radius: 2px;
  cursor: pointer;
  position: relative;
  transition: all .3s ease;
  box-shadow: 0 2px 0 var(--c-gold-deep), 0 12px 32px rgba(47, 74, 45, 0.25);
  text-align: center;
}
.btn-primary::before {
  content: ""; position: absolute; inset: 4px;
  border: 1px solid rgba(212, 179, 102, 0.4);
  pointer-events: none;
  border-radius: 1px;
}
.btn-primary:hover {
  background: var(--c-matcha);
  transform: translateY(-1px);
  box-shadow: 0 3px 0 var(--c-gold-deep), 0 16px 40px rgba(47, 74, 45, 0.3);
}
.btn-primary .arrow { font-family: var(--f-en-serif); font-size: 18px; font-style: italic; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 28px;
  background: transparent;
  border: 1px solid var(--c-gold);
  color: var(--c-ink);
  font-family: var(--f-serif);
  font-size: 14px;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: all .25s;
}
.btn-ghost:hover { background: var(--c-gold); color: #fff; }

/* ---------- Ornaments ---------- */
.ornament-line {
  display: flex; align-items: center; justify-content: center;
  gap: 14px; margin: 0 auto;
}
.ornament-line::before,
.ornament-line::after {
  content: "";
  flex: 1; max-width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}
.ornament-line .dot {
  width: 6px; height: 6px;
  background: var(--c-gold);
  transform: rotate(45deg);
}

/* ---------- Modal (contact) ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(15, 12, 8, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: center; justify-content: center;
  z-index: 200;
  padding: 24px;
  opacity: 0;
  transition: opacity .3s;
}
.modal-overlay.open { display: flex; opacity: 1; }
.modal {
  background: var(--c-paper);
  max-width: 520px;
  width: 100%;
  padding: 56px 40px 40px;
  border-radius: 2px;
  position: relative;
  text-align: center;
  border: 1px solid var(--c-gold);
  box-shadow: 0 0 0 8px rgba(250, 247, 242, 1), 0 32px 64px rgba(0,0,0,0.4);
}
.modal::before {
  content: "";
  position: absolute;
  top: 16px; left: 16px; right: 16px; bottom: 16px;
  border: 1px solid var(--c-line-gold);
  pointer-events: none;
}
.modal .modal-eyebrow {
  font-family: var(--f-en-caps);
  font-size: 11px;
  letter-spacing: 0.5em;
  color: var(--c-gold-deep);
  margin-bottom: 14px;
  text-transform: uppercase;
}
.modal h3 {
  font-size: 24px;
  margin-bottom: 18px;
}
.modal p {
  color: var(--c-ink-soft);
  font-size: 14px;
  line-height: 2;
  margin-bottom: 28px;
}
.modal .logos {
  display: flex; justify-content: center; gap: 20px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.modal .logos span {
  padding: 8px 16px;
  background: #fff;
  border: 1px solid var(--c-line-gold);
  font-size: 12px;
  letter-spacing: 0.15em;
  font-family: var(--f-en-serif);
  font-style: italic;
  color: var(--c-ink-soft);
}
.modal .close {
  position: absolute;
  top: 14px; right: 18px;
  width: 30px; height: 30px;
  border: 0; background: transparent;
  font-size: 22px;
  color: var(--c-ink-soft);
  cursor: pointer;
  z-index: 1;
}
.modal .close:hover { color: var(--c-ink); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--c-sumi);
  color: rgba(250, 247, 242, 0.6);
  padding: 72px 48px 48px;
  text-align: center;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold) 20%, var(--c-gold) 80%, transparent);
}
.site-footer .mark {
  font-family: var(--f-serif);
  color: var(--c-paper);
  letter-spacing: 0.35em;
  font-size: 16px;
  margin-bottom: 20px;
}
.site-footer small {
  font-size: 11px;
  letter-spacing: 0.15em;
  display: block;
  margin-top: 28px;
  opacity: 0.5;
}

/* ---------- Seigaiha & asanoha SVG patterns (reused as BG) ---------- */
.pattern-seigaiha {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='40' viewBox='0 0 80 40'><g fill='none' stroke='%23b8944a' stroke-width='0.8' opacity='0.35'><circle cx='0' cy='40' r='30'/><circle cx='0' cy='40' r='20'/><circle cx='0' cy='40' r='10'/><circle cx='40' cy='40' r='30'/><circle cx='40' cy='40' r='20'/><circle cx='40' cy='40' r='10'/><circle cx='80' cy='40' r='30'/><circle cx='80' cy='40' r='20'/><circle cx='80' cy='40' r='10'/><circle cx='20' cy='20' r='30'/><circle cx='20' cy='20' r='20'/><circle cx='20' cy='20' r='10'/><circle cx='60' cy='20' r='30'/><circle cx='60' cy='20' r='20'/><circle cx='60' cy='20' r='10'/></g></svg>");
  background-size: 80px 40px;
}
.pattern-asanoha {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='60' height='104' viewBox='0 0 60 104'><g fill='none' stroke='%23b8944a' stroke-width='0.7' opacity='0.3'><path d='M30 0 L60 17.3 L60 51.9 L30 69.2 L0 51.9 L0 17.3 Z'/><path d='M30 0 L30 69.2 M0 17.3 L60 51.9 M60 17.3 L0 51.9'/></g></svg>");
  background-size: 60px 104px;
}

/* ---------- Mobile ---------- */
@media (max-width: 768px) {
  .site-header { padding: 14px 18px; }
  .brand-mark { font-size: 12px; letter-spacing: 0.15em; gap: 8px; }
  .brand-mark .seal { width: 28px; height: 28px; font-size: 12px; }
  .lang-btn { padding: 7px 11px; font-size: 12px; }
  .section-wrap { padding: 80px 20px; }
  .section-head { margin-bottom: 48px; }
  .section-head .eyebrow { font-size: 10px; letter-spacing: 0.35em; padding: 0 20px; }
  .section-head .eyebrow::before, .section-head .eyebrow::after { width: 12px; }
  .btn-primary { padding: 18px 28px; font-size: 14px; letter-spacing: 0.15em; width: 100%; }
  .modal { padding: 44px 24px 28px; }
  .site-footer { padding: 48px 20px 32px; }
}

/* ---------- Tweaks panel ---------- */
.tweaks-panel {
  position: fixed;
  bottom: 20px; right: 20px;
  z-index: 300;
  background: var(--c-paper-card);
  border: 1px solid var(--c-gold);
  border-radius: 2px;
  padding: 20px;
  min-width: 260px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
  display: none;
  font-family: var(--f-sans);
  font-size: 12px;
}
.tweaks-panel.show { display: block; }
.tweaks-panel h4 {
  font-family: var(--f-en-caps);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--c-gold-deep);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--c-line-gold);
}
.tweaks-panel .tweak-row { margin-bottom: 14px; }
.tweaks-panel label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
  color: var(--c-ink-soft);
  text-transform: uppercase;
}
.tweaks-panel .opts { display: flex; gap: 4px; flex-wrap: wrap; }
.tweaks-panel .opts button {
  flex: 1;
  min-width: 0;
  padding: 6px 8px;
  background: #fff;
  border: 1px solid var(--c-line);
  font-size: 11px;
  letter-spacing: 0.05em;
  cursor: pointer;
  border-radius: 2px;
  color: var(--c-ink);
  font-family: var(--f-sans);
  white-space: nowrap;
}
.tweaks-panel .opts button.active {
  background: var(--c-matcha-deep);
  color: #fff;
  border-color: var(--c-matcha-deep);
}

/* No-select (security) */
body { user-select: none; -webkit-user-select: none; -moz-user-select: none; }
img { -webkit-user-drag: none; user-drag: none; pointer-events: none; }