/* ================================================
   common.css - 全ページ共通スタイル
   ================================================ */

/* ---------- カラー・タイポ変数 ---------- */
:root {
  /* color */
  --color-bg: #0B0B10;
  --color-bg-section: #15161A;
  --color-bg-card: #1D1E22;
  --color-text: #E8E8E8;
  --color-text-sub: #A9ABB3;
  --color-text-muted: #6E6F76;
  --color-gold: #C9A646;
  --color-gold-light: #E0C079;
  --color-gold-dark: #9A7E36;
  --color-purple: #3D3346; /* 紫はほぼ廃止、わずかに陰影として */
  --color-border: rgba(201, 166, 70, 0.22);
  --color-border-soft: rgba(255, 255, 255, 0.07);

  /* gradient */
  --gradient-gold: linear-gradient(135deg, #E0C079 0%, #C9A646 50%, #9A7E36 100%);
  --gradient-gold-text: linear-gradient(180deg, #E0C079 0%, #C9A646 100%);

  /* font */
  --font-serif-jp: "Noto Serif JP", "Yu Mincho", "游明朝", serif;
  --font-sans-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-serif-en: "Cormorant Garamond", "Playfair Display", "Times New Roman", serif;

  /* layout */
  --container-max: 1200px;
  --container-pad: clamp(20px, 4vw, 40px);
  --section-pad-y: clamp(60px, 10vw, 120px);
  --header-h: 72px;

  /* shadow */
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 0 24px rgba(212, 175, 55, 0.25);

  /* transition */
  --t-fast: 0.2s ease;
  --t-base: 0.35s ease;
}

/* ---------- ベース ---------- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans-jp);
  font-weight: 400;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { transition: color var(--t-fast); }
a:hover { color: var(--color-gold-light); }

/* ---------- レイアウト ヘルパー ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--section-pad-y);
}

.section--alt {
  background: var(--color-bg-section);
}

/* ---------- 見出し ---------- */
.section-label {
  display: inline-block;
  font-family: var(--font-serif-en);
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-serif-jp);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.4;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.section-title .accent {
  background: var(--gradient-gold-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.section-lead {
  color: var(--color-text-sub);
  font-size: clamp(15px, 1.5vw, 17px);
  margin-bottom: 48px;
  max-width: 720px;
}

.section-head {
  text-align: center;
  margin-bottom: 56px;
}

.section-head .section-lead {
  margin-inline: auto;
  margin-bottom: 0;
}

/* ---------- ボタン / CTA ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.05em;
  border-radius: 2px;
  transition: all var(--t-base);
  cursor: pointer;
  white-space: nowrap;
}

.btn--gold {
  background: var(--gradient-gold);
  color: #000;
  box-shadow: var(--shadow-gold);
}
.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212, 175, 55, 0.4);
  color: #000;
}

.btn--ghost {
  background: transparent;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
}
.btn--ghost:hover {
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-gold-light);
}

.btn--lg {
  padding: 18px 40px;
  font-size: 16px;
}

/* ---------- ヘッダー ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(11, 11, 16, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-soft);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* =========================================
   ロゴ画像（PNG・SVG対応）
   ========================================= */
.site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  padding: 4px 0;
}
.site-logo__img {
  height: 48px;
  width: auto;
  display: block;
  /* 透過済みPNGなのでフィルタは最小限。シルバー基調の発色を底上げ */
  filter: brightness(1.05) contrast(1.05);
  transition: filter var(--t-fast);
}
.site-logo:hover .site-logo__img {
  filter: brightness(1.15) contrast(1.1);
}
/* 大型ロゴ（フッター用） */
.site-logo--lg {
  align-items: flex-start;
}
.site-logo--lg .site-logo__img {
  height: 84px;
}
/* ローダー用ロゴ */
.loader__img {
  width: clamp(180px, 30vw, 280px);
  height: auto;
  display: block;
  opacity: 0;
  transform: translateY(24px) scale(0.96);
  animation: loader-text-in 1.1s 0.05s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  filter: brightness(1.1);
}

/* 旧クラス互換（テキスト版ロゴが残っている場合のスタイル）
   ========================================= */
.site-logo--text {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  line-height: 1;
  text-decoration: none;
  padding: 4px 0;
}
.site-logo__nr {
  font-family: var(--font-serif-en);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: -0.06em;
  background: var(--gradient-gold-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 1px 0 rgba(255,255,255,0.04);
  display: inline-block;
}
.site-logo__name {
  font-family: var(--font-serif-en);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--color-text);
  margin-top: 1px;
}
.site-logo__caption {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 8px;
  letter-spacing: 0.45em;
  color: var(--color-text-sub);
  margin-top: 3px;
  padding-left: 0.45em; /* 字間で右にずれる分の補正 */
}
.site-logo__caption::before,
.site-logo__caption::after {
  content: "";
  width: 8px;
  height: 1px;
  background: var(--color-text-muted);
}

/* フッター・大型ロゴ */
.site-logo--lg .site-logo__nr { font-size: 56px; }
.site-logo--lg .site-logo__name { font-size: 26px; margin-top: 4px; }
.site-logo--lg .site-logo__caption { font-size: 11px; margin-top: 8px; }
.site-logo--lg .site-logo__caption::before,
.site-logo--lg .site-logo__caption::after { width: 16px; }

/* 旧クラス互換（既存のフッター等で使われている） */
.site-logo__mark {
  font-family: var(--font-serif-en);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--gradient-gold-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.site-logo__sub {
  font-size: 11px;
  color: var(--color-text-sub);
  letter-spacing: 0.15em;
}

.site-nav {
  display: none;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 32px;
}
.site-nav__link {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-text);
  position: relative;
  padding-block: 4px;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width var(--t-base);
}
.site-nav__link:hover::after { width: 100%; }

.site-nav__cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-tel {
  display: none;
  align-items: center;
  gap: 6px;
  font-family: var(--font-serif-en);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-gold);
  letter-spacing: 0.05em;
}
.header-tel__icon { font-size: 14px; }

@media (min-width: 1024px) {
  .site-nav { display: block; }
  .header-tel { display: inline-flex; }
}

/* ---------- ハンバーガー ---------- */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  height: 24px;
  justify-content: center;
  z-index: 110;
}
.hamburger span {
  width: 100%;
  height: 1px;
  background: var(--color-gold);
  transition: transform var(--t-base), opacity var(--t-base);
}
.hamburger.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
@media (min-width: 1024px) {
  .hamburger { display: none; }
}

.mobile-nav {
  position: fixed;
  inset: 0;
  background: rgba(11, 11, 16, 0.98);
  backdrop-filter: blur(8px);
  z-index: 105;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base);
}
.mobile-nav.is-open {
  opacity: 1;
  pointer-events: auto;
}
.mobile-nav__link {
  font-family: var(--font-serif-jp);
  font-size: 22px;
  letter-spacing: 0.1em;
}
.mobile-nav__tel {
  margin-top: 24px;
  font-family: var(--font-serif-en);
  font-size: 28px;
  color: var(--color-gold);
  letter-spacing: 0.05em;
}

/* ---------- フッター ---------- */
.site-footer {
  background: #07070B;
  border-top: 1px solid var(--color-border-soft);
  padding: 64px 0 32px;
  color: var(--color-text-sub);
  font-size: 14px;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
@media (min-width: 768px) {
  .site-footer__grid { grid-template-columns: 1.5fr 1fr 1fr; }
}
.site-footer__brand .site-logo__mark { font-size: 26px; }
.site-footer__company {
  margin-top: 20px;
  line-height: 1.9;
  font-size: 13px;
}
.site-footer__heading {
  font-family: var(--font-serif-en);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.site-footer__list { display: grid; gap: 8px; }
.site-footer__list a { color: var(--color-text-sub); }
.site-footer__list a:hover { color: var(--color-gold-light); }
.site-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border-soft);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* ---------- モバイル追従CTA ---------- */
.mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(11, 11, 16, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
}
.mobile-cta__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 10px;
  font-size: 11px;
  color: var(--color-gold);
  border-right: 1px solid var(--color-border-soft);
}
.mobile-cta__item:last-child { border-right: none; }
.mobile-cta__icon { font-size: 18px; }
@media (min-width: 1024px) {
  .mobile-cta { display: none; }
}

/* ---------- ページ余白調整 ---------- */
main {
  padding-top: var(--header-h);
}

@media (max-width: 1023px) {
  body { padding-bottom: 64px; } /* mobile-cta 分 */
}

/* ---------- 共通：CTAブロック ---------- */
.cta-section {
  padding-block: var(--section-pad-y);
  background:
    linear-gradient(rgba(11,11,16,0.75), rgba(11,11,16,0.92)),
    radial-gradient(ellipse at center, rgba(201,166,70,0.10), transparent 60%),
    var(--color-bg-section);
  text-align: center;
}
.cta-section__title {
  font-family: var(--font-serif-jp);
  font-size: clamp(24px, 3.5vw, 36px);
  margin-bottom: 16px;
}
.cta-section__lead {
  color: var(--color-text-sub);
  margin-bottom: 32px;
}
.cta-section__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* ---------- アニメーション ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .fade-up { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}