/*
Theme Name: Catalog Viewer Theme
Theme URI: https://example.com
Description: PDFカタログ閲覧システム用WordPressテーマ
Version: 1.0.0
Author: Your Company
Text Domain: catalog-theme
*/

:root {
  --ink: #1a1814;
  --ink-mid: #4a4640;
  --ink-light: #6b6860;
  --ink-faint: #b8b4ac;
  --paper: #f7f4ef;
  --paper-warm: #ede9e2;
  --paper-card: #faf8f5;
  --accent: #8b6f47;
  --accent-light: #c4a882;
  --accent-pale: #ede4d8;
  --border: rgba(26,24,20,0.1);
  --border-strong: rgba(26,24,20,0.18);
  --shadow-card: 0 2px 12px rgba(26,24,20,0.07), 0 1px 3px rgba(26,24,20,0.05);
  --shadow-hover: 0 8px 32px rgba(26,24,20,0.12), 0 2px 8px rgba(26,24,20,0.08);
  --shadow-page: 0 8px 40px rgba(26,24,20,0.18), 0 2px 8px rgba(26,24,20,0.1);
  --radius: 4px;
  --sidebar-w: 96px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 300;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ── サイトヘッダー ── */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--paper-card);
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-logo {
  font-family: 'Shippori Mincho', serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.site-logo a { color: inherit; }

.site-header-sub {
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

/* ── サイトフッター ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 40px;
  text-align: center;
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
  background: var(--paper-card);
}

/* ════════════════════════════════
   一覧ページ
════════════════════════════════ */
.archive-hero {
  padding: 64px 40px 48px;
  max-width: 960px;
  margin: 0 auto;
}

.archive-eyebrow {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.archive-eyebrow::after {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--accent-light);
}

.archive-title {
  font-family: 'Shippori Mincho', serif;
  font-size: clamp(22px, 3.5vw, 34px);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.5;
  margin-bottom: 16px;
}

.archive-desc {
  font-size: 13px;
  color: var(--ink-light);
  line-height: 2;
  max-width: 520px;
}

/* グリッド */
.catalog-grid {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 40px 80px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

/* カード */
.catalog-card {
  background: var(--paper-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s, transform 0.25s, border-color 0.25s;
  animation: fadeUp 0.4s ease both;
}
.catalog-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  border-color: var(--accent-light);
}
.catalog-card.is-hidden { display: none; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card-thumb {
  aspect-ratio: 4/3;
  background: var(--paper-warm);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
}

.card-thumb-inner {
  width: 56%;
  aspect-ratio: 3/4;
  background: #fff;
  box-shadow: 0 4px 16px rgba(26,24,20,0.14);
  border-radius: 2px;
  position: relative;
  overflow: hidden;
}
.card-thumb-inner canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-fallback {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
}
.thumb-fallback svg { opacity: 0.25; }
.thumb-fallback span { font-size: 10px; color: var(--ink-faint); letter-spacing: 0.06em; }

.card-badge {
  position: absolute;
  top: 10px; left: 10px;
  background: var(--accent);
  color: #faf8f5;
  font-size: 10px;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 100px;
}

.card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.card-category {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-transform: uppercase;
}

.card-title {
  font-family: 'Shippori Mincho', serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.card-desc {
  font-size: 12px;
  color: var(--ink-light);
  line-height: 1.8;
  flex: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.card-date {
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

.card-cta {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.05em;
  transition: gap 0.2s;
}
.catalog-card:hover .card-cta { gap: 8px; }

/* ════════════════════════════════
   ビューアーページ（single）
════════════════════════════════ */
body.single-catalog {
  overflow: hidden;
  height: 100vh;
}

body.single-catalog .site-header {
  height: 52px;
  padding: 0 20px 0 calc(var(--sidebar-w) + 20px);
}

/* ビューアーツールバー */
.viewer-toolbar {
  display: contents;
}

.viewer-title {
  font-family: 'Shippori Mincho', serif;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  white-space: nowrap;
  flex-shrink: 0;
}

.toolbar-center {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  justify-content: center;
}

.nav-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--border-strong);
  background: transparent;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  color: var(--ink-light);
  font-size: 18px;
  line-height: 1;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.nav-btn:hover:not(:disabled) {
  background: var(--accent-pale);
  color: var(--accent);
  border-color: var(--accent-light);
}
.nav-btn:disabled { opacity: 0.3; cursor: default; }

.page-input-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--ink-light);
  letter-spacing: 0.04em;
}
.page-input {
  width: 36px;
  text-align: center;
  border: 1px solid var(--border-strong);
  background: var(--paper);
  border-radius: var(--radius);
  padding: 3px 4px;
  font-size: 12px;
  color: var(--ink);
}
.page-input:focus { outline: none; border-color: var(--accent-light); }

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.zoom-btn {
  width: 28px; height: 28px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--radius);
  font-size: 16px;
  color: var(--ink-light);
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.zoom-btn:hover { background: var(--paper-warm); color: var(--ink); }

.zoom-label {
  font-size: 11px;
  color: var(--ink-faint);
  min-width: 34px;
  text-align: center;
  letter-spacing: 0.04em;
}

.download-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  background: var(--accent);
  color: #faf8f5;
  border: none;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.05em;
  transition: background 0.15s;
  white-space: nowrap;
}
.download-btn:hover { background: #7a6040; }

/* サイドバー */
.viewer-sidebar {
  position: fixed;
  top: 52px; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--paper-warm);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 50;
}
.viewer-sidebar::-webkit-scrollbar { width: 4px; }
.viewer-sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 2px; }

.thumb-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1.5px solid transparent;
  transition: border-color 0.15s;
  background: var(--paper-card);
  position: relative;
  flex-shrink: 0;
}
.thumb-item:hover { border-color: var(--accent-light); cursor: pointer; }
.thumb-item.is-active { border-color: var(--accent); }
.thumb-item canvas { display: block; width: 100%; height: auto; }
.thumb-num {
  position: absolute;
  bottom: 3px; right: 4px;
  font-size: 9px;
  color: var(--ink-faint);
  background: rgba(247,244,239,0.85);
  padding: 1px 3px;
  border-radius: 2px;
}

/* ビューアー本体 */
.viewer-main {
  position: fixed;
  top: 52px;
  left: var(--sidebar-w);
  right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  padding: 32px;
  background: var(--paper);
}
.viewer-main::-webkit-scrollbar { width: 6px; height: 6px; }
.viewer-main::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

#main-canvas {
  display: block;
  box-shadow: var(--shadow-page);
  border-radius: 2px;
}

/* 進捗バー */
.viewer-progress {
  position: fixed;
  top: 52px;
  left: var(--sidebar-w);
  right: 0;
  height: 2px;
  background: var(--border);
  z-index: 60;
}
.viewer-progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.3s ease;
  border-radius: 0 1px 1px 0;
}

/* ページ矢印 */
.viewer-arrow {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--paper-card);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  color: var(--ink-light);
  transition: background 0.15s, color 0.15s;
  z-index: 55;
}
.viewer-arrow:hover:not(:disabled) { background: var(--paper-warm); color: var(--ink); }
.viewer-arrow:disabled { opacity: 0.25; cursor: default; }
.viewer-arrow--prev { left: calc(var(--sidebar-w) + 12px); }
.viewer-arrow--next { right: 12px; }

/* キーヒント */
.key-hint {
  position: fixed;
  bottom: 16px; right: 20px;
  font-size: 10px;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  pointer-events: none;
  z-index: 60;
}

/* ローディング */
.viewer-loading {
  position: fixed;
  inset: 0;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 200;
}
.viewer-loading.is-hidden { display: none; }
.viewer-loading__title {
  font-family: 'Shippori Mincho', serif;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.viewer-loading__bar-wrap {
  width: 160px; height: 1px;
  background: var(--border-strong);
  border-radius: 1px;
  overflow: hidden;
}
.viewer-loading__bar {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.3s ease;
  border-radius: 1px;
}
.viewer-loading__text {
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

/* エラー */
.viewer-error {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--paper);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  z-index: 200;
}
.viewer-error.is-show { display: flex; }
.viewer-error p {
  font-family: 'Shippori Mincho', serif;
  font-size: 14px;
  color: var(--ink-light);
  letter-spacing: 0.06em;
  text-align: center;
  line-height: 2;
}

/* ══════════════════════════════════════
   レスポンシブ（タブレット 768px以下）
══════════════════════════════════════ */
@media (max-width: 768px) {
  /* 一覧ページ */
  .archive-hero { padding: 40px 24px 28px; }
  .catalog-grid { padding: 0 24px 60px; grid-template-columns: 1fr 1fr; gap: 16px; }
}

/* ══════════════════════════════════════
   レスポンシブ（スマホ 640px以下）
══════════════════════════════════════ */
@media (max-width: 640px) {

  /* ── 共通ヘッダー ── */
  .site-header {
    padding: 0 16px;
    height: 52px;
  }
  .site-header-sub { display: none; }

  /* ── 一覧ページ ── */
  .archive-hero  { padding: 32px 16px 24px; }
  .archive-title { font-size: 20px; }
  .archive-desc  { font-size: 12px; }

  .catalog-grid {
    padding: 0 16px 48px;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .card-body   { padding: 12px 14px 14px; gap: 6px; }
  .card-title  { font-size: 13px; }
  .card-desc   { display: none; } /* スマホでは説明文を非表示にしてコンパクトに */
  .card-date   { font-size: 10px; }
  .card-cta    { font-size: 11px; }

  /* ── ビューアーページ（スマホ専用レイアウト） ── */
  body.single-catalog {
    --sidebar-w: 0px; /* サイドバーを非表示にしてフル幅で表示 */
  }

  body.single-catalog .site-header {
    padding: 0 12px;
    height: 48px;
  }

  /* ツールバー：スマホ用にコンパクト化 */
  .viewer-title    { display: none; }
  .download-btn span { display: none; }
  .zoom-btn        { display: none; } /* ズームボタン非表示（ピンチ操作で代替） */
  .zoom-label      { display: none; }

  .toolbar-center { gap: 8px; }
  .nav-btn {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }
  .page-input-wrap { font-size: 13px; }
  .page-input      { width: 40px; font-size: 13px; }

  .download-btn {
    padding: 6px 10px;
    min-width: 36px;
    justify-content: center;
  }

  /* サイドバーを非表示 */
  .viewer-sidebar  { display: none; }
  .viewer-progress { left: 0; }

  /* ビューアー本体をフル幅に */
  .viewer-main {
    left: 0;
    top: 48px;
    padding: 12px 8px;
    align-items: flex-start;
    justify-content: center;
  }

  /* ページ矢印を下部に配置 */
  .viewer-arrow {
    top: auto;
    bottom: 20px;
    transform: none;
    width: 44px;
    height: 44px;
    font-size: 22px;
    background: var(--paper-card);
    box-shadow: 0 2px 12px rgba(26,24,20,0.15);
    border: 1px solid var(--border-strong);
  }
  .viewer-arrow--prev { left: 24px; }
  .viewer-arrow--next { right: 24px; }

  /* スワイプヒント */
  .key-hint { display: none; }

  /* ローディング */
  .viewer-loading__title { font-size: 14px; }
}

/* ══════════════════════════════════════
   レスポンシブ（極小スマホ 390px以下）
══════════════════════════════════════ */
@media (max-width: 390px) {
  .catalog-grid { grid-template-columns: 1fr; }
  .card-desc    { display: none; }
}