/* ============================================================
   facebook_log_index.css
   大阪陳列株式会社 Facebook過去ログ目次ページ 専用スタイルシート
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Noto+Serif+JP:wght@400;700&display=swap');

/* ---------- CSS変数 ---------- */
:root {
  --color-bg:          #0a0a1e;
  --color-bg2:         #0f0f2a;
  --color-bg3:         #13133a;
  --color-surface:     #16163a;
  --color-surface2:    #1c1c48;
  --color-border:      #2a2a6a;
  --color-border-light:#3a3a8a;
  --color-accent:      #4a90d9;
  --color-accent2:     #5ba3f0;
  --color-accent-gold: #d4a93a;
  --color-accent-gold2:#f0c84a;
  --color-text:        #e8e8f8;
  --color-text-muted:  #9090c0;
  --color-text-dim:    #5a5a90;
  --color-link:        #7ab8f5;
  --color-link-hover:  #f0c84a;
  --color-available:   #2a4a7a;
  --color-available-h: #3a5a9a;
  --color-unavailable: #1a1a3a;
  --color-unavailable-t:#3a3a60;
  --color-year-header: #1e1e50;
  --color-header-top:  #080818;
  --color-cta-bg:      #1a3a6a;
  --color-cta-hover:   #2a4a8a;
  --color-tel-bg:      #1a5a1a;
  --color-tel-hover:   #2a7a2a;
  --color-contact-bg:  #4a2a6a;
  --color-contact-hover:#6a3a9a;
  --color-access-bg:   #3a3a1a;
  --color-access-hover:#5a5a2a;

  --shadow-card:  0 4px 20px rgba(0,0,0,0.5);
  --shadow-glow:  0 0 20px rgba(74,144,217,0.2);
  --radius-card:  8px;
  --radius-btn:   6px;
  --font-main:    'Noto Sans JP', sans-serif;
  --font-serif:   'Noto Serif JP', serif;
  --transition:   0.2s ease;
}

/* ---------- リセット・基本 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 20% 10%, rgba(74,144,217,0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(90,60,160,0.08) 0%, transparent 50%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 39px,
      rgba(42,42,106,0.15) 39px,
      rgba(42,42,106,0.15) 40px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 39px,
      rgba(42,42,106,0.08) 39px,
      rgba(42,42,106,0.08) 40px
    );
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

a { color: var(--color-link); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-link-hover); text-decoration: underline; }

/* ---------- ページトップへ戻るボタン ---------- */
#page-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 46px;
  height: 46px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, background var(--transition);
  z-index: 999;
  text-decoration: none;
  box-shadow: 0 2px 12px rgba(74,144,217,0.4);
}
#page-top.visible { opacity: 1; pointer-events: auto; }
#page-top:hover { background: var(--color-accent2); text-decoration: none; color: #fff; }

/* ---------- ヘッダー ---------- */
.site-header {
  background: var(--color-header-top);
  border-bottom: 2px solid var(--color-border);
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(0,0,0,0.6);
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.header-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.header-logo a {
  color: #fff;
  text-decoration: none;
}

.logo-main {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.logo-sub {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.header-cta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.btn-tel {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-tel-bg);
  color: #fff !important;
  padding: 7px 14px;
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,0.15);
  transition: background var(--transition), transform var(--transition);
  text-decoration: none !important;
  white-space: nowrap;
}
.btn-tel:hover { background: var(--color-tel-hover); transform: translateY(-1px); text-decoration: none !important; }
.btn-tel .icon { font-size: 1rem; }

.btn-contact {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-contact-bg);
  color: #fff !important;
  padding: 7px 14px;
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,0.15);
  transition: background var(--transition), transform var(--transition);
  text-decoration: none !important;
  white-space: nowrap;
}
.btn-contact:hover { background: var(--color-contact-hover); transform: translateY(-1px); text-decoration: none !important; }

.btn-access {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-access-bg);
  color: #fff !important;
  padding: 7px 14px;
  border-radius: var(--radius-btn);
  font-size: 0.85rem;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,0.15);
  transition: background var(--transition), transform var(--transition);
  text-decoration: none !important;
  white-space: nowrap;
}
.btn-access:hover { background: var(--color-access-hover); transform: translateY(-1px); text-decoration: none !important; }

/* ---------- メインコンテナ ---------- */
.main-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

/* ---------- ページタイトルエリア ---------- */
.page-title-area {
  text-align: center;
  padding: 32px 20px 28px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 28px;
}

.page-title-area h1 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 10px;
  letter-spacing: 0.03em;
}

.page-title-area h1 a {
  color: var(--color-accent-gold2);
  text-decoration: none;
}
.page-title-area h1 a:hover { color: #fff; text-decoration: underline; }

.page-subtitle {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- 説明ボックス ---------- */
.description-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-card);
  padding: 16px 20px;
  margin-bottom: 20px;
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.8;
}

/* ---------- Facebookリンクバナー ---------- */
.fb-banner {
  background: linear-gradient(135deg, #1a3a6a 0%, #1e4080 100%);
  border: 1px solid #2a5a9a;
  border-radius: var(--radius-card);
  padding: 16px 20px;
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-card);
}

.fb-banner-text {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.fb-banner-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #1877f2;
  color: #fff !important;
  padding: 9px 18px;
  border-radius: var(--radius-btn);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none !important;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.fb-banner-link:hover { background: #2a87ff; transform: translateY(-1px); }
.fb-banner-update {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ---------- 年グループ ---------- */
.year-group {
  margin-bottom: 20px;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
}

.year-header {
  background: var(--color-year-header);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--color-border);
}

.year-label {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent-gold2);
  letter-spacing: 0.05em;
}

.year-label-west {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.year-era-badge {
  margin-left: auto;
  font-size: 0.7rem;
  background: var(--color-border);
  color: var(--color-text-muted);
  padding: 2px 8px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

/* ---------- 月グリッド ---------- */
.months-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  background: var(--color-bg2);
}

.month-cell {
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.88rem;
  font-weight: 500;
  transition: background var(--transition);
  position: relative;
}

.month-cell:nth-child(6n) { border-right: none; }
.month-cell:nth-last-child(-n+6) { border-bottom: none; }

/* 2行目（7〜12月）で最後の行の場合のみ border-bottom なし → JS or 末尾セルで対応 */
.month-cell.last-row { border-bottom: none; }

.month-cell.available {
  background: var(--color-available);
  cursor: pointer;
}
.month-cell.available:hover {
  background: var(--color-available-h);
}
.month-cell.available a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 70px;
  color: var(--color-link) !important;
  font-weight: 700;
  text-decoration: none !important;
  padding: 10px 4px;
  text-align: center;
  transition: color var(--transition);
}
.month-cell.available:hover a {
  color: var(--color-link-hover) !important;
}

.month-cell.unavailable {
  background: var(--color-unavailable);
  color: var(--color-unavailable-t);
  cursor: default;
  font-weight: 400;
}


/* ---------- 全文検索バナー ---------- */
.search-banner {
  background: linear-gradient(135deg, #1a2a5a 0%, #1e3070 50%, #1a2a5a 100%);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-card);
  padding: 20px 24px;
  margin-bottom: 24px;
  box-shadow: 0 4px 20px rgba(74,144,217,0.2), var(--shadow-card);
}
.search-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.search-banner-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  letter-spacing: 0.03em;
}
.search-banner-sub {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}
.btn-search-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-accent);
  color: #fff !important;
  padding: 11px 22px;
  border-radius: var(--radius-btn);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none !important;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 10px rgba(74,144,217,0.35);
  flex-shrink: 0;
}
.btn-search-link::before {
  content: '[SEARCH]';
  font-size: 0.75rem;
  opacity: 0.8;
  margin-right: 4px;
  letter-spacing: 0.03em;
}
.btn-search-link:hover {
  background: var(--color-accent2);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(74,144,217,0.5);
  text-decoration: none !important;
}

@media (max-width: 640px) {
  .search-banner-inner { flex-direction: column; align-items: stretch; }
  .btn-search-link { justify-content: center; }
}

/* ---------- アクセス情報カード ---------- */
.access-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-bottom: 28px;
  box-shadow: var(--shadow-card);
}

.access-card h2 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-accent-gold2);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  letter-spacing: 0.05em;
}

.access-info {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.9;
  margin-bottom: 12px;
}

.access-info strong { color: #fff; }

.access-note {
  font-size: 0.82rem;
  color: var(--color-accent-gold2);
  background: rgba(212,169,58,0.08);
  border: 1px solid rgba(212,169,58,0.2);
  border-radius: 4px;
  padding: 8px 12px;
  margin-bottom: 14px;
  line-height: 1.6;
}

.access-btns {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ---------- CTAバナー ---------- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-surface2) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  text-align: center;
  margin-bottom: 32px;
  box-shadow: var(--shadow-card);
}

.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: #fff;
  margin-bottom: 8px;
  font-weight: 700;
}

.cta-banner p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.cta-banner .cta-reception {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: 8px;
}

.cta-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-cta-tel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #1a6a1a;
  color: #fff !important;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none !important;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 10px rgba(0,100,0,0.3);
}
.btn-cta-tel:hover { background: #2a8a2a; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,150,0,0.4); text-decoration: none !important; }

.btn-cta-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-contact-bg);
  color: #fff !important;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none !important;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 10px rgba(74,42,106,0.3);
}
.btn-cta-contact:hover { background: var(--color-contact-hover); transform: translateY(-2px); text-decoration: none !important; }

/* ---------- フッター ---------- */
.site-footer {
  background: var(--color-header-top);
  border-top: 1px solid var(--color-border);
  padding: 24px 20px;
  text-align: center;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  font-size: 0.82rem;
}

.footer-links a { color: var(--color-text-muted); }
.footer-links a:hover { color: var(--color-link-hover); }

.footer-copy {
  font-size: 0.78rem;
  color: var(--color-text-dim);
  line-height: 1.6;
}
.footer-copy a { color: var(--color-text-dim); }
.footer-copy a:hover { color: var(--color-link-hover); }

/* ---------- セクション区切り ---------- */
.section-divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 24px 0;
}

/* ---------- 年ジャンプナビ ---------- */
.year-jump-nav {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 18px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.year-jump-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.year-jump-links {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.year-jump-links a {
  font-size: 0.78rem;
  background: var(--color-bg);
  color: var(--color-link);
  padding: 3px 10px;
  border-radius: 4px;
  border: 1px solid var(--color-border);
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.year-jump-links a:hover {
  background: var(--color-available);
  color: var(--color-link-hover);
  border-color: var(--color-accent);
  text-decoration: none;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .header-cta {
    width: 100%;
  }
  .btn-tel, .btn-contact, .btn-access {
    flex: 1;
    justify-content: center;
    font-size: 0.78rem;
    padding: 8px 8px;
  }
  .logo-main { font-size: 0.95rem; }

  .months-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .month-cell:nth-child(6n) { border-right: 1px solid var(--color-border); }
  .month-cell:nth-child(3n) { border-right: none; }
  .month-cell.last-row { border-bottom: none; }

  .cta-buttons { flex-direction: column; }
  .btn-cta-tel, .btn-cta-contact { width: 100%; justify-content: center; }

  .page-title-area h1 { font-size: 1.1rem; }

  .fb-banner { flex-direction: column; }
  .fb-banner-link { width: 100%; justify-content: center; }

  .year-jump-nav { gap: 6px; }
  .year-jump-label { width: 100%; }
}

@media (max-width: 400px) {
  .header-cta { flex-direction: column; }
  .btn-tel, .btn-contact, .btn-access { width: 100%; }
}

/* ---------- アニメーション ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.year-group {
  animation: fadeInUp 0.4s ease both;
}
.year-group:nth-child(1) { animation-delay: 0.05s; }
.year-group:nth-child(2) { animation-delay: 0.10s; }
.year-group:nth-child(3) { animation-delay: 0.15s; }
.year-group:nth-child(4) { animation-delay: 0.20s; }
.year-group:nth-child(5) { animation-delay: 0.25s; }
.year-group:nth-child(n+6) { animation-delay: 0.30s; }