/* ============================================================
   Google Fonts
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@300;400&family=Cormorant+Garamond:ital,wght@0,300;0,400;1,300;1,400&display=swap');

/* ============================================================
   CSS変数
   ============================================================ */
:root {
  /*
  --black:  #09090F;
  --navy:   #0D1B2A;
  --white:  #F0ECE4;
  --ice:    #7EB8D4;
  --gold:   #C8B47A;
  --font-en:  'Cinzel', serif;
  --font-sub: 'Cormorant Garamond', serif;
  --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  */

  --black: #09090f;/* 深い闇 */
  --navy: #0d1b2a;/* 紺色の地平線 */
  --navy2: #112236;/* カード等の背景 */
  --white: #f0ece4;/* 暖かみのある白（メイン文字） */
  --white2: #a8a49c;/* グレーがかった白（サブ文字） */
  --ice: #7eb8d4;/* 幻想的な氷青色（アクセント） */
  --ice-dim: #3a6e88;/* 抑えた青 */
  --ice-glow: rgba(126, 184, 212, 0.12);/* 発光エフェクト用 */

  /* メインタイトルのフォント */
  --font-en: 'Cinzel', serif;
  /* サブタイトルのフォント */
  --font-sub: 'Cormorant Garamond', serif; 

}

/* ============================================================
   ベーススタイル
   ============================================================ */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

* {
  cursor: none;
}

/* サイト全体のデフォルト */
body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font-sub);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

ul,
ol {
  list-style: none;
}

p {
  margin: 0;
}

h1, h2, h3, h4, h5, h6 {
  margin-block-start: 0;
  margin-block-end: 0;
}

/* ============================================================
   HEADER
   ============================================================ */

/* ヘッダー全体：固定表示・上部に常に表示 */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 28px 48px;
  display: flex;
  align-items: center;
  transition: all 0.4s;
}

/* トップページ：ハンバーガーのみ右寄せ */
.site-header.is-top {
  justify-content: flex-end;
}

/* その他のページ：左LIMINAL・右ハンバーガー・下線 */
.site-header.is-page {
  justify-content: space-between;
}

.site-logo-text {
  font-family: var(--font-en);
  font-size: 30px;
  letter-spacing: 0.35em;
  color: var(--black);
  text-decoration: none;
  font-weight: 300;
}

/* ハンバーガーボタン：右上固定 */
.menu-btn {
  position: relative;
  z-index: 1005;
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

/* ハンバーガーの3本線 */
.menu-btn span {
  display: block;
  height: 1px;
  background: var(--white);
  transition: all 0.4s cubic-bezier(0.16,1,0.3,1);
}



/* 3本線の長さをずらしてデザイン */
.menu-btn span:nth-child(1) { width: 28px; }
.menu-btn span:nth-child(2) { width: 28px; }
.menu-btn span:nth-child(3) { width: 28px; }

/* 開いた時：×印に変形 */
.menu-btn.active span:nth-child(1) { width: 28px; transform: translateY(7px) rotate(45deg); }
.menu-btn.active span:nth-child(2) { opacity: 0; }
.menu-btn.active span:nth-child(3) { width: 28px; transform: translateY(-7px) rotate(-45deg); }

/* 白背景ページ（固定ページ等）ではハンバーガーを黒に */
.is-light .menu-btn span {
  background: var(--black);
}

/* 固定ページ：黒 */
.is-page .menu-btn span {
  background: var(--black);
}

/* 固定ページでメニューが開いたとき：白 */
.is-page .menu-btn.active span {
  background: var(--white);
}

/* ============================================================
   メニューを開いた時の全画面オーバーレイ
   ============================================================ */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  /* 夜空グラデーション背景 */
  background:
    radial-gradient(ellipse at 20% 50%, rgba(27,58,107,0.5) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(9,9,15,0.7) 0%, transparent 50%),
    linear-gradient(135deg, rgba(13,27,42,1.0) 0%, rgba(9,9,15,1.0) 50%, rgba(26,26,46,1.0) 100%);
  backdrop-filter: blur(32px) saturate(150%) brightness(1.1);
  -webkit-backdrop-filter: blur(40px) saturate(150%) brightness(1.1);
}

/* 開いた時：表示 */
.nav-overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* ナビ項目：2列グリッド */
.nav-inner {
  width: 92%;
  max-width: 900px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 80px;
  position: relative;
}

/* 中央の縦境界線 */
.nav-inner::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(240,236,228,0.1) 30%, rgba(240,236,228,0.1) 70%, transparent);
  transform: translateX(-50%);
}

/* 各ナビ項目 */
.nav-item {
  padding: 20px 0;
  border-bottom: 1px solid rgba(240,236,228,0.06);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 14px;
  overflow: hidden;
}

/* 英語テキスト：大きめ・白 */
.nav-en {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(24px, 3vw, 40px);
  letter-spacing: 8px;
  color: rgba(240,236,228,0.9);
  transform: translateY(30px);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.16,1,0.3,1), opacity 0.5s, color 0.3s;
}

/* 日本語テキスト：小さめ・薄い白 */
.nav-ja {
  font-family: var(--font-sub);
  font-style: italic;
  font-size: 13px;
  letter-spacing: 3px;
  color: rgba(240,236,228,0.9);
  transform: translateY(20px);
  opacity: 0;
  transition: transform 0.5s cubic-bezier(0.16,1,0.3,1), opacity 0.5s;
}

/* ホバー時：少し薄く */
.nav-item:hover .nav-en { color: rgba(240,236,228,0.4); }

/* メニューが開いた時：項目をフェードイン */
.nav-overlay.active .nav-en,
.nav-overlay.active .nav-ja {
  transform: translateY(0);
  opacity: 1;
}

/* 項目ごとに遅延をずらしてアニメーション */
.nav-item:nth-child(1) .nav-en, .nav-item:nth-child(1) .nav-ja { transition-delay: 0.08s; }
.nav-item:nth-child(2) .nav-en, .nav-item:nth-child(2) .nav-ja { transition-delay: 0.12s; }
.nav-item:nth-child(3) .nav-en, .nav-item:nth-child(3) .nav-ja { transition-delay: 0.16s; }
.nav-item:nth-child(4) .nav-en, .nav-item:nth-child(4) .nav-ja { transition-delay: 0.20s; }
.nav-item:nth-child(5) .nav-en, .nav-item:nth-child(5) .nav-ja { transition-delay: 0.24s; }
.nav-item:nth-child(6) .nav-en, .nav-item:nth-child(6) .nav-ja { transition-delay: 0.28s; }
.nav-item:nth-child(7) .nav-en, .nav-item:nth-child(7) .nav-ja { transition-delay: 0.32s; }
.nav-item:nth-child(8) .nav-en, .nav-item:nth-child(8) .nav-ja { transition-delay: 0.36s; }
.nav-item:nth-child(9) .nav-en, .nav-item:nth-child(9) .nav-ja { transition-delay: 0.40s; }
.nav-item:nth-child(10) .nav-en, .nav-item:nth-child(10) .nav-ja { transition-delay: 0.44s; }

/* ============================================================
   カスタムカーソル
   ============================================================ */
/* 中心の点 */
.cursor {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--white);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  mix-blend-mode: screen;
}

/* 外側のリング：少し遅れて追いかける */
.cursor-ring {
  position: fixed;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--white);
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease-out;
}

/* 白背景ページではカーソルを黒に */
.is-light .cursor {
  background: var(--black);
  mix-blend-mode: normal;
}

.is-light .cursor-ring {
  border-color: rgba(9,9,15,0.4);
}

/* メニューが開いている時：×ボタンとカーソルを白に */
.menu-btn.active span {
  background: var(--white);
}

/* ヘッダーを開いている際のカーソルの色を白にする */
body.menu-open .cursor {
  background: var(--white);
  mix-blend-mode: normal;
}

body.menu-open .cursor-ring {
  border-color: rgba(240,236,228,0.4);
}

/* 固定ページ・投稿ページではカーソルを黒に */
.is-page .cursor,
.single .cursor {
  background: var(--black);
  mix-blend-mode: normal;
}

.is-page .cursor-ring,
.single .cursor-ring {
  border-color: rgba(9,9,15,0.4);
}

/* ============================================================
   フッター（PC）
   ============================================================ */
/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  width: 100%;
  padding: 80px 0 48px;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(27,58,107,0.35) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(9,9,15,0.4) 0%, transparent 50%),
    linear-gradient(135deg, rgba(13,27,42,0.97) 0%, rgba(9,9,15,0.97) 50%, rgba(26,26,46,0.97) 100%);
}

.footer-logo {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 36px;
  letter-spacing: 18px;
  color: var(--white);
  text-decoration: none;
  display: block;
  text-align: center;
  margin-bottom: 0px;
}

.footer-tagline {
  font-family: var(--font-sub);
  font-style: italic;
  font-size: 20px;
  letter-spacing: 4px;
  color: var(--white);
  text-align: center;
  margin-bottom: 56px;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
}

.footer-nav-row {
  display: flex;
  justify-content: center;
  gap: 40px;
}

.footer-nav-row a {
  font-family: var(--font-en);
  font-size: 16px;
  letter-spacing: 5px;
  color: rgba(240,236,228,0.4);
  text-decoration: none;
  transition: color 0.3s;
  padding: 8px 0;
  position: relative;
}

.footer-nav-row a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: rgba(240,236,228,0.2);
  transform: scaleX(0);
  transition: transform 0.3s;
}

.footer-nav-row a:hover { color: rgba(240,236,228,0.8); }
.footer-nav-row a:hover::after { transform: scaleX(1); }

.footer-copy {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 5px;
  color: var(--white);
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid rgba(240,236,228,0.06);
  width: 80%;
  margin: 0 auto;
}

/* ============================================================
   PAGE 共通(ここで全体の余白や背景を一括管理)
   ============================================================ */
#page {
  min-height: 100vh;
  background: var(--white);
  padding-top: 120px;
  padding-bottom: 120px;
}

.page-container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

.page-header {
  margin-bottom: 80px;
  border-bottom: 1px solid rgba(240,236,228,0.08);
  padding-bottom: 40px;
  text-align: center;
}

.page-label {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(24px, 4vw, 48px);
  letter-spacing: 12px;
  color: var(--black);
}

.page-content {
  font-family: var(--font-sub);
  font-size: 15px;
  line-height: 2;
  letter-spacing: 2px;
  color: rgba(9,9,15,0.7);
}

/* 固定ページは常時黒カーソル */
.page-template .cursor,
.page .cursor {
  background: var(--black);
  mix-blend-mode: normal;
}

.page-template .cursor-ring,
.page .cursor-ring {
  border-color: rgba(9,9,15,0.4);
}

/* 固定ページは常時黒ハンバーガー */
.page .menu-btn span {
  background: var(--black);
}


/* ============================================================
   SINGLE POST
   ============================================================ */
.single-post {
  background: var(--white);
  padding: 80px 0px 0px;
  min-height: auto;
}

.single-container {
  width: 92%;
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 120px;
  align-items: start;
}

.single-header {
  margin-bottom: 48px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.single-date {
  font-family: var(--font-en);
  font-size: 16px;
  letter-spacing: 6px;
  color: var(--black);
  font-weight: 300;
}

.single-title {
  font-family: var(--font-sub);
  font-weight: 300;
  font-size: clamp(20px, 2.5vw, 34px);
  letter-spacing: 6px;
  color: var(--black);
  line-height: 1.8;
  order: 2;
}

.single-thumbnail {
  margin-bottom: 48px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
}

.single-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.single-content {
  font-family: var(--font-sub);
  font-size: 14px;
  line-height: 3;
  letter-spacing: 1px;
  color: var(--black);
  margin-bottom: 64px;
}

.single-content p { margin-bottom: 28px; }

.single-back {
  text-align: center;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  margin-bottom: 80px;
}

.single-back a {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 6px;
  color: var(--black);
  text-decoration: none;
  transition: color 0.3s;
  font-weight: 300;
  text-transform: uppercase;
}

.single-back a:hover { color: var(--black); }

.single-sidebar {
  position: sticky;
  top: 170px;
}

.sidebar-label {
  font-family: var(--font-en);
  font-size: 16px;
  letter-spacing: 5px;
  color: var(--black);
  font-weight: 300;
  text-transform: uppercase;
  margin-bottom: 24px;
  display: block;
}

.sidebar-post-list {
  display: flex;
  flex-direction: column;
}

.sidebar-post-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  transition: opacity 0.3s;
  border-bottom: 1px solid rgba(26, 24, 20, 0.08);
}

.sidebar-post-item:hover { opacity: 0.5; }

.sidebar-post-num {
  font-family: var(--font-en);
  font-size: 14px;
  letter-spacing: 2px;
  color: var(--black);
  font-weight: 300;
  padding-top: 3px;
}

.sidebar-post-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-post-date {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--black);
  font-weight: 300;
}

.sidebar-post-title {
  font-family: var(--font-sub);
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 1px;
  color: var(--black);
  font-weight: 300;
}