/* ===== 基本設定 ===== */
:root {
  --bg-dark: #0a0a0f;
  --bg-card: #1a1a2e;
  --gold: #d4af37;
  --gold-light: #f4e4a6;
  --text-light: #e0e0e0;
}

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

.viewer-body {
  background: var(--bg-dark);
  color: var(--text-light);
  font-family: 'Noto Sans JP', sans-serif;
  min-height: 100vh;
}

/* ===== ビューア全体 ===== */
.manga-viewer {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 1200px;
  margin: 0 auto;
}

.manga-viewer.is-fullscreen {
  max-width: none;
}

/* ===== ヘッダー ===== */
.viewer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--gold);
  flex-shrink: 0;
  gap: 0.5rem;
}

.back-btn {
  color: var(--gold);
  text-decoration: none;
  font-size: 0.9rem;
}

.back-btn:hover {
  color: var(--gold-light);
}

.manga-title {
  font-size: 1.2rem;
  color: var(--gold);
}

.page-indicator {
  font-size: 0.9rem;
  color: var(--text-light);
}

/* ===== コントロールボタン ===== */
.viewer-controls {
  display: flex;
  gap: 0.5rem;
}

.control-btn {
  background: rgba(212, 175, 55, 0.2);
  border: 1px solid var(--gold);
  color: var(--gold);
  width: 40px;
  height: 40px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.control-btn:hover {
  background: rgba(212, 175, 55, 0.4);
}

/* ===== メイン表示エリア ===== */
.viewer-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0.5rem;
  overflow: visible;
  min-height: 0;
}

/* スクロールモード時のメインエリア */
.manga-viewer[data-view-mode="scroll"] .viewer-main {
  overflow-y: auto;
  overflow-x: hidden;
  align-items: flex-start;
  padding: 0;
}

.page-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}

/* スクロールモード用コンテナ */
.scroll-container {
  flex-direction: column;
  align-items: center;
  gap: 0;
  height: auto;
  width: 100%;
  padding: 0;
}

.page-image {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

/* 1ページ表示モード */
.single-page {
  max-width: calc(100% - 120px);
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* スクロールモードの画像 */
.scroll-page {
  max-height: none;
  height: auto;
  width: 100%;
  max-width: 800px;
  border-radius: 0;
  box-shadow: none;
  display: block;
}

/* 見開きモード */
.spread-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.spread-page {
  max-height: calc(100vh - 180px);
  max-width: 48%;
  object-fit: contain;
}

.spread-single {
  max-height: calc(100vh - 180px);
  max-width: 50%;
}

/* フルスクリーン時の調整 */
.is-fullscreen .page-image {
  max-height: 100%;
}

.is-fullscreen .single-page {
  max-width: calc(100% - 120px);
  max-height: 100%;
}

.is-fullscreen .scroll-page {
  max-width: 900px;
}

/* ===== ナビゲーションボタン ===== */
.nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 80px;
  background: rgba(212, 175, 55, 0.2);
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 2rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 4px;
  z-index: 10;
}

.nav-btn:hover:not(:disabled) {
  background: rgba(212, 175, 55, 0.4);
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.prev-btn {
  left: 10px;
}

.next-btn {
  right: 10px;
}

/* ===== サムネイルストリップ ===== */
.viewer-footer {
  padding: 0.5rem;
  background: var(--bg-card);
  border-top: 1px solid var(--gold);
  flex-shrink: 0;
}

.thumbnail-strip {
  display: flex;
  gap: 8px;
  justify-content: center;
  overflow-x: auto;
  padding: 0.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--gold) var(--bg-dark);
}

.thumbnail-strip::-webkit-scrollbar {
  height: 6px;
}

.thumbnail-strip::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

.thumbnail-strip::-webkit-scrollbar-thumb {
  background: var(--gold);
  border-radius: 3px;
}

.thumbnail {
  width: 60px;
  height: 80px;
  object-fit: cover;
  border: 2px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.thumbnail:hover {
  opacity: 0.8;
}

.thumbnail.active {
  border-color: var(--gold);
  opacity: 1;
}

/* ===== トースト通知 ===== */
.viewer-toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(212, 175, 55, 0.9);
  color: var(--bg-dark);
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: bold;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 100;
}

.viewer-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== ローディング ===== */
.page-image {
  background: linear-gradient(90deg, var(--bg-card) 0%, var(--bg-dark) 50%, var(--bg-card) 100%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

.page-image[src] {
  background: none;
  animation: none;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== 漫画一覧ページ ===== */
.list-body {
  background: var(--bg-dark);
  color: var(--text-light);
  font-family: 'Noto Sans JP', sans-serif;
  min-height: 100vh;
}

.list-header {
  text-align: center;
  padding: 2rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--gold);
}

.list-header h1 {
  color: var(--gold);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.list-header p {
  color: #aaa;
}

.list-header .back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--gold);
  text-decoration: none;
}

.list-header .back-link:hover {
  color: var(--gold-light);
}

/* ===== シリーズセクション ===== */
.series-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.series-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.series-header h2 {
  color: var(--gold);
  font-size: 1.5rem;
}

.series-description {
  color: #aaa;
  font-size: 0.9rem;
}

/* ===== 漫画グリッド ===== */
.manga-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.episode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.manga-card {
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease;
  border: 1px solid transparent;
}

.manga-card:hover {
  transform: translateY(-5px);
  border-color: var(--gold);
}

.manga-card a {
  text-decoration: none;
  color: var(--text-light);
  display: block;
}

.manga-thumbnail {
  width: 100%;
  height: 350px;
  object-fit: cover;
  object-position: top;
}

.manga-card h2,
.manga-card h3 {
  color: var(--gold);
  padding: 1rem 1rem 0.5rem;
  font-size: 1.1rem;
}

.manga-card p {
  padding: 0 1rem;
  font-size: 0.9rem;
  color: #aaa;
  line-height: 1.5;
}

.page-count {
  display: block;
  padding: 1rem;
  font-size: 0.8rem;
  color: var(--gold);
}

/* ===== 話数ナビゲーション ===== */
.episode-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--bg-card);
  border-top: 1px solid rgba(212, 175, 55, 0.3);
  margin-top: auto;
}

.episode-nav a {
  color: var(--gold);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--gold);
  border-radius: 4px;
  transition: all 0.3s ease;
}

.episode-nav a:hover {
  background: rgba(212, 175, 55, 0.2);
}

.episode-nav a.disabled {
  opacity: 0.3;
  pointer-events: none;
}

/* ===== レスポンシブ ===== */
@media (max-width: 768px) {
  .nav-btn {
    width: 40px;
    height: 60px;
    font-size: 1.5rem;
  }

  .prev-btn {
    left: 5px;
  }

  .next-btn {
    right: 5px;
  }

  .viewer-header {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .manga-title {
    order: -1;
    width: 100%;
    text-align: center;
  }

  .viewer-controls {
    order: 1;
  }

  .thumbnail {
    width: 45px;
    height: 60px;
  }

  .manga-thumbnail {
    height: 250px;
  }

  .control-btn {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }

  /* モバイルではスクロールモードをデフォルトに */
  .scroll-page {
    max-width: 100%;
  }

  .spread-page {
    max-width: 100%;
    max-height: calc(50vh - 90px);
  }

  .spread-wrapper {
    flex-direction: column;
  }

  .series-section {
    padding: 1rem;
  }

  .series-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* ===== 大画面対応 ===== */
@media (min-width: 1400px) {
  .manga-viewer {
    max-width: 1400px;
  }

  .scroll-page {
    max-width: 900px;
  }

  .spread-page {
    max-width: 45%;
  }
}