/* ================================
   BLOG セクション 拡張スタイル（参考サイト準拠）
================================ */

.riff-blog-section-enhanced {
  padding: 120px 0;
  background: var(--white, #ffffff);
  width: 100%;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.riff-blog-section-enhanced::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
      circle at 15% 85%,
      rgba(0, 124, 186, 0.04) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 85% 15%,
      rgba(255, 107, 53, 0.04) 0%,
      transparent 50%
    );
  pointer-events: none;
  z-index: 0;
}

.riff-blog-container-enhanced {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 60px;
  width: 100%;
  position: relative;
  z-index: 1;
}

/* ================================
   ヘッダー
================================ */
.riff-blog-header-enhanced {
  text-align: center;
  margin-bottom: 80px;
}

.riff-blog-title-enhanced {
  font-size: 4rem;
  font-weight: 700;
  color: var(--text-color, #333);
  margin-bottom: 20px;
  font-family: "Roboto", sans-serif;
  letter-spacing: -2px;
  line-height: 1.1;
  position: relative;
}

.riff-blog-title-enhanced::after {
  content: "";
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--primary-color, #007cba),
    var(--accent-color, #ff6b35)
  );
  border-radius: 2px;
}

.riff-blog-subtitle-enhanced {
  font-size: 1.2rem;
  color: var(--text-light, #666);
  margin-bottom: 0;
  line-height: 1.6;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ================================
   フィルター
================================ */
.riff-blog-filters-enhanced {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin-bottom: 80px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding-bottom: 0;
  flex-wrap: wrap;
}

.riff-blog-filter-btn-enhanced {
  background: transparent;
  border: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-light, #666);
  cursor: pointer;
  padding: 20px 35px;
  position: relative;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-family: "Roboto", sans-serif;
  letter-spacing: 0.5px;
  border-radius: 0;
  white-space: nowrap;
}

.riff-blog-filter-btn-enhanced::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--primary-color, #007cba),
    var(--accent-color, #ff6b35)
  );
  transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.riff-blog-filter-btn-enhanced:hover,
.riff-blog-filter-btn-enhanced.active {
  color: var(--accent-color, #ff6b35);
  background: rgba(255, 107, 53, 0.05);
}

.riff-blog-filter-btn-enhanced:hover::after,
.riff-blog-filter-btn-enhanced.active::after {
  width: 100%;
}

.riff-blog-filter-btn-enhanced:focus {
  outline: 3px solid rgba(0, 124, 186, 0.3);
  outline-offset: 2px;
}

/* ================================
   ブログ記事グリッド
================================ */
.riff-blog-grid-enhanced {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 80px;
  min-height: 600px;
  transition: all 0.6s ease;
}

.riff-blog-item-enhanced {
  background: var(--white, #ffffff);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  opacity: 1;
  transform: scale(1);
}

.riff-blog-item-enhanced.filtering-hidden {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.riff-blog-item-enhanced:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.riff-blog-link-enhanced {
  display: block;
  text-decoration: none;
  color: inherit;
  height: 100%;
  position: relative;
}

.riff-blog-link-enhanced:focus {
  outline: 3px solid rgba(0, 124, 186, 0.3);
  outline-offset: 4px;
  border-radius: 16px;
}

/* ================================
   ブログ記事画像
================================ */
.riff-blog-image-enhanced {
  height: 240px;
  overflow: hidden;
  position: relative;
  background: var(--gray-200, #e9ecef);
}

.riff-blog-image-enhanced img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.riff-blog-item-enhanced:hover .riff-blog-image-enhanced img {
  transform: scale(1.1);
}

/* オーバーレイ（グラデーション削除版） */
.riff-blog-overlay-enhanced {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent; /* グラデーション削除 */
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  /* backdrop-filter削除 */
}

.riff-blog-item-enhanced:hover .riff-blog-overlay-enhanced {
  opacity: 1;
}

.riff-blog-read-more-enhanced {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.9); /* 背景を白に変更 */
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color, #007cba); /* アイコン色を変更 */
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15); /* 影を追加 */
  border: 2px solid rgba(255, 255, 255, 0.8);
  transition: all 0.3s ease;
  transform: scale(0.8);
}

.riff-blog-item-enhanced:hover .riff-blog-read-more-enhanced {
  transform: scale(1);
  background: rgba(255, 255, 255, 1);
  color: var(--accent-color, #ff6b35);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.2);
}

/* ================================
   ブログ記事コンテンツ
================================ */
.riff-blog-content-enhanced {
  padding: 30px;
  height: calc(100% - 240px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.riff-blog-meta-enhanced {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  gap: 15px;
}

.riff-blog-date-enhanced {
  font-size: 14px;
  color: var(--text-lighter, #999);
  font-weight: 500;
  font-family: "Roboto", monospace;
  letter-spacing: 0.5px;
}

.riff-blog-category-enhanced {
  background: linear-gradient(
    135deg,
    var(--primary-color, #007cba),
    var(--accent-color, #ff6b35)
  );
  color: var(--white, #ffffff);
  font-size: 11px;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1;
  flex-shrink: 0;
}

.riff-blog-item-title-enhanced {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 15px 0;
  line-height: 1.4;
  color: var(--text-color, #333);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
  transition: color 0.3s ease;
}

.riff-blog-link-enhanced:hover .riff-blog-item-title-enhanced {
  color: var(--primary-color, #007cba);
}

.riff-blog-excerpt-enhanced {
  font-size: 14px;
  color: var(--text-light, #666);
  line-height: 1.6;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

/* ================================
   「もっと見る」ボタン
================================ */
.riff-blog-button-wrap-enhanced {
  text-align: center;
}

.riff-blog-button-enhanced {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--accent-color, #ff6b35);
  color: var(--white, #ffffff);
  font-weight: 600;
  font-size: 18px;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  border: 2px solid var(--accent-color, #ff6b35);
  padding: 18px 36px;
  border-radius: 50px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(255, 107, 53, 0.3);
}

.riff-blog-button-enhanced::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.6s ease;
}

.riff-blog-button-enhanced:hover {
  background: #e55a2b;
  border-color: #e55a2b;
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(255, 107, 53, 0.4);
  text-decoration: none;
  color: var(--white, #ffffff);
}

.riff-blog-button-enhanced:hover::before {
  left: 100%;
}

.riff-blog-button-enhanced svg {
  transition: transform 0.3s ease;
}

.riff-blog-button-enhanced:hover svg {
  transform: translateX(6px);
}

.riff-blog-button-enhanced:focus {
  outline: 3px solid rgba(255, 107, 53, 0.4);
  outline-offset: 4px;
}

/* ================================
   記事がない場合の表示
================================ */
.no-blog-posts-enhanced {
  text-align: center;
  padding: 80px 20px;
  background: var(--gray-50, #f8f9fa);
  border-radius: 20px;
  border: 2px dashed var(--gray-300, #dee2e6);
  max-width: 600px;
  margin: 0 auto;
}

.no-posts-icon-enhanced {
  margin-bottom: 30px;
  opacity: 0.3;
}

.no-posts-icon-enhanced svg {
  color: var(--text-light, #666);
}

.no-blog-posts-enhanced h3 {
  font-size: 24px;
  margin-bottom: 20px;
  color: var(--text-color, #333);
  font-weight: 600;
}

.no-blog-posts-enhanced p {
  color: var(--text-light, #666);
  margin-bottom: 30px;
  line-height: 1.7;
}

/* ================================
   フィルタリングアニメーション
================================ */
.riff-blog-grid-enhanced.filtering {
  pointer-events: none;
}

.riff-blog-item-enhanced.filtering-show {
  animation: blogItemShow 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.riff-blog-item-enhanced.filtering-hide {
  animation: blogItemHide 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

@keyframes blogItemShow {
  0% {
    opacity: 0;
    transform: scale(0.8) translateY(30px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes blogItemHide {
  0% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
  100% {
    opacity: 0;
    transform: scale(0.8) translateY(-30px);
  }
}

/* ================================
   レスポンシブ対応
================================ */

/* 大画面 */
@media (min-width: 1400px) {
  .riff-blog-container-enhanced {
    padding: 0 80px;
  }

  .riff-blog-title-enhanced {
    font-size: 4.5rem;
  }

  .riff-blog-grid-enhanced {
    gap: 50px;
  }
}

/* タブレット大 */
@media (max-width: 1200px) {
  .riff-blog-container-enhanced {
    padding: 0 40px;
  }

  .riff-blog-title-enhanced {
    font-size: 3.5rem;
  }

  .riff-blog-grid-enhanced {
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
  }

  .riff-blog-filter-btn-enhanced {
    padding: 18px 30px;
    font-size: 15px;
  }
}

/* タブレット */
@media (max-width: 1024px) {
  .riff-blog-section-enhanced {
    padding: 100px 0;
  }

  .riff-blog-container-enhanced {
    padding: 0 30px;
  }

  .riff-blog-title-enhanced {
    font-size: 3rem;
  }

  .riff-blog-header-enhanced {
    margin-bottom: 60px;
  }

  .riff-blog-filters-enhanced {
    margin-bottom: 60px;
    gap: 10px;
  }

  .riff-blog-filter-btn-enhanced {
    padding: 15px 25px;
    font-size: 14px;
  }

  .riff-blog-grid-enhanced {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 60px;
  }

  .riff-blog-image-enhanced {
    height: 220px;
  }

  .riff-blog-content-enhanced {
    padding: 25px;
    height: calc(100% - 220px);
  }
}

/* タブレット小・スマートフォン大 */
@media (max-width: 768px) {
  .riff-blog-section-enhanced {
    padding: 80px 0;
  }

  .riff-blog-container-enhanced {
    padding: 0 20px;
  }

  .riff-blog-title-enhanced {
    font-size: 2.5rem;
    margin-bottom: 15px;
  }

  .riff-blog-subtitle-enhanced {
    font-size: 1.1rem;
  }

  .riff-blog-header-enhanced {
    margin-bottom: 50px;
  }

  .riff-blog-filters-enhanced {
    flex-direction: column;
    gap: 0;
    margin-bottom: 50px;
  }

  .riff-blog-filter-btn-enhanced {
    width: 100%;
    padding: 15px 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    text-align: left;
  }

  .riff-blog-filter-btn-enhanced:last-child {
    border-bottom: none;
  }

  .riff-blog-filter-btn-enhanced::after {
    left: 0;
    right: auto;
    width: 0;
    height: 100%;
    top: 0;
    bottom: auto;
  }

  .riff-blog-filter-btn-enhanced:hover::after,
  .riff-blog-filter-btn-enhanced.active::after {
    width: 4px;
    height: 100%;
  }

  .riff-blog-grid-enhanced {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-bottom: 50px;
    min-height: 400px;
  }

  .riff-blog-image-enhanced {
    height: 200px;
  }

  .riff-blog-content-enhanced {
    padding: 20px;
    height: calc(100% - 200px);
  }

  .riff-blog-item-title-enhanced {
    font-size: 1.1rem;
  }

  .riff-blog-excerpt-enhanced {
    font-size: 13px;
  }

  .riff-blog-button-enhanced {
    padding: 15px 30px;
    font-size: 16px;
  }
}

/* スマートフォン */
@media (max-width: 480px) {
  .riff-blog-section-enhanced {
    padding: 60px 0;
  }

  .riff-blog-container-enhanced {
    padding: 0 15px;
  }

  .riff-blog-title-enhanced {
    font-size: 2.2rem;
  }

  .riff-blog-subtitle-enhanced {
    font-size: 1rem;
  }

  .riff-blog-header-enhanced {
    margin-bottom: 40px;
  }

  .riff-blog-filters-enhanced {
    margin-bottom: 40px;
  }

  .riff-blog-filter-btn-enhanced {
    font-size: 14px;
    padding: 12px 15px;
  }

  .riff-blog-grid-enhanced {
    gap: 20px;
    margin-bottom: 40px;
  }

  .riff-blog-image-enhanced {
    height: 180px;
  }

  .riff-blog-content-enhanced {
    padding: 18px;
    height: calc(100% - 180px);
  }

  .riff-blog-meta-enhanced {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
  }

  .riff-blog-item-title-enhanced {
    font-size: 1rem;
    margin-bottom: 12px;
  }

  .riff-blog-excerpt-enhanced {
    font-size: 12px;
  }

  .riff-blog-date-enhanced {
    font-size: 12px;
  }

  .riff-blog-category-enhanced {
    font-size: 10px;
    padding: 4px 8px;
  }

  .riff-blog-button-enhanced {
    padding: 12px 24px;
    font-size: 15px;
  }

  .no-blog-posts-enhanced {
    padding: 60px 15px;
  }

  .no-blog-posts-enhanced h3 {
    font-size: 20px;
  }

  .no-blog-posts-enhanced p {
    font-size: 14px;
  }
}

/* 超小画面 */
@media (max-width: 360px) {
  .riff-blog-title-enhanced {
    font-size: 1.8rem;
  }

  .riff-blog-grid-enhanced {
    gap: 15px;
  }

  .riff-blog-image-enhanced {
    height: 160px;
  }

  .riff-blog-content-enhanced {
    padding: 15px;
    height: calc(100% - 160px);
  }

  .riff-blog-button-enhanced {
    padding: 10px 20px;
    font-size: 14px;
  }
}

/* ================================
   アクセシビリティ対応
================================ */

/* フォーカス管理 */
.riff-blog-filter-btn-enhanced:focus-visible {
  outline: 3px solid rgba(0, 124, 186, 0.5);
  outline-offset: 2px;
}

.riff-blog-link-enhanced:focus-visible {
  outline: 3px solid rgba(0, 124, 186, 0.5);
  outline-offset: 4px;
  border-radius: 16px;
}

.riff-blog-button-enhanced:focus-visible {
  outline: 3px solid rgba(255, 107, 53, 0.5);
  outline-offset: 4px;
}

/* キーボードナビゲーション */
.riff-blog-filter-btn-enhanced:active {
  transform: scale(0.98);
}

.riff-blog-button-enhanced:active {
  transform: translateY(-1px);
}

/* ================================
   高コントラストモード対応
================================ */
@media (prefers-contrast: high) {
  .riff-blog-item-enhanced {
    border: 2px solid var(--text-color, #333);
  }

  .riff-blog-category-enhanced {
    background: var(--text-color, #333);
    color: var(--white, #ffffff);
  }

  .riff-blog-filter-btn-enhanced {
    border: 1px solid transparent;
  }

  .riff-blog-filter-btn-enhanced:focus,
  .riff-blog-filter-btn-enhanced.active {
    border-color: var(--text-color, #333);
  }

  .riff-blog-button-enhanced {
    border: 2px solid var(--text-color, #333);
  }

  .no-blog-posts-enhanced {
    border-color: var(--text-color, #333);
  }
}

/* ================================
   アニメーション削減対応
================================ */
@media (prefers-reduced-motion: reduce) {
  .riff-blog-item-enhanced,
  .riff-blog-image-enhanced img,
  .riff-blog-overlay-enhanced,
  .riff-blog-read-more-enhanced,
  .riff-blog-button-enhanced,
  .riff-blog-filter-btn-enhanced {
    transition: none !important;
  }

  .riff-blog-item-enhanced:hover {
    transform: none !important;
  }

  .riff-blog-item-enhanced:hover .riff-blog-image-enhanced img {
    transform: none !important;
  }

  .riff-blog-button-enhanced:hover {
    transform: none !important;
  }

  .riff-blog-grid-enhanced {
    transition: none !important;
  }

  .riff-blog-item-enhanced.filtering-show,
  .riff-blog-item-enhanced.filtering-hide {
    animation: none !important;
  }

  @keyframes blogItemShow {
    0%,
    100% {
      opacity: 1;
      transform: none;
    }
  }

  @keyframes blogItemHide {
    0%,
    100% {
      opacity: 0;
      transform: none;
    }
  }
}

/* ================================
   印刷対応
================================ */
@media print {
  .riff-blog-section-enhanced {
    padding: 30px 0;
    page-break-inside: avoid;
    background: #ffffff !important;
  }

  .riff-blog-filters-enhanced,
  .riff-blog-button-wrap-enhanced {
    display: none !important;
  }

  .riff-blog-grid-enhanced {
    display: block !important;
    margin-bottom: 30px !important;
  }

  .riff-blog-item-enhanced {
    display: block !important;
    break-inside: avoid;
    margin-bottom: 20px !important;
    box-shadow: none !important;
    border: 1px solid #000000 !important;
    transform: none !important;
  }

  .riff-blog-overlay-enhanced {
    display: none !important;
  }

  .riff-blog-image-enhanced {
    height: 150px !important;
  }

  .riff-blog-title-enhanced,
  .riff-blog-subtitle-enhanced,
  .riff-blog-item-title-enhanced,
  .riff-blog-excerpt-enhanced,
  .riff-blog-date-enhanced {
    color: #000000 !important;
  }

  .riff-blog-category-enhanced {
    background: #000000 !important;
    color: #ffffff !important;
  }
}

/* ================================
   ダークモード対応（オプション）
================================ */
@media (prefers-color-scheme: dark) {
  .riff-blog-section-enhanced {
    background: var(--gray-900, #212529);
  }

  .riff-blog-item-enhanced {
    background: var(--gray-800, #343a40);
    border-color: var(--gray-600, #6c757d);
  }

  .riff-blog-title-enhanced,
  .riff-blog-item-title-enhanced {
    color: var(--white, #ffffff);
  }

  .riff-blog-subtitle-enhanced,
  .riff-blog-excerpt-enhanced {
    color: var(--gray-400, #ced4da);
  }

  .riff-blog-date-enhanced {
    color: var(--gray-500, #adb5bd);
  }

  .riff-blog-filter-btn-enhanced {
    color: var(--gray-400, #ced4da);
  }

  .riff-blog-filter-btn-enhanced:hover,
  .riff-blog-filter-btn-enhanced.active {
    color: var(--accent-color, #ff6b35);
    background: rgba(255, 107, 53, 0.1);
  }

  .no-blog-posts-enhanced {
    background: var(--gray-800, #343a40);
    border-color: var(--gray-600, #6c757d);
  }

  .no-blog-posts-enhanced h3 {
    color: var(--white, #ffffff);
  }

  .no-blog-posts-enhanced p {
    color: var(--gray-400, #ced4da);
  }
}

/* ================================
   パフォーマンス最適化
================================ */
.riff-blog-item-enhanced {
  will-change: transform, box-shadow;
  transform: translateZ(0);
}

.riff-blog-image-enhanced img {
  will-change: transform;
}

.riff-blog-overlay-enhanced {
  will-change: opacity;
}

.riff-blog-grid-enhanced {
  contain: layout style paint;
}

/* GPU加速の有効化 */
.riff-blog-item-enhanced:hover {
  will-change: transform;
}

.riff-blog-button-enhanced {
  will-change: transform;
}

/* ================================
   カスタムスクロールバー（Webkit）
================================ */
.riff-blog-container-enhanced::-webkit-scrollbar {
  width: 8px;
}

.riff-blog-container-enhanced::-webkit-scrollbar-track {
  background: var(--gray-200, #e9ecef);
  border-radius: 4px;
}

.riff-blog-container-enhanced::-webkit-scrollbar-thumb {
  background: var(--primary-color, #007cba);
  border-radius: 4px;
}

.riff-blog-container-enhanced::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color, #ff6b35);
}

/* ================================
   BLOG ホバー時矢印削除
   Blog Hover Arrow Removal
================================ */

/* ホバー時の矢印オーバーレイを完全に非表示 */
.riff-blog-overlay-enhanced {
  display: none !important;
}

/* 画像のホバー効果は維持（ズーム効果など） */
.riff-blog-item-enhanced:hover .riff-blog-image-enhanced img {
  transform: scale(1.1);
}

/* ================================
   レスポンシブ対応（全デバイス共通）
================================ */

/* 全てのデバイスサイズで矢印を非表示 */
@media (max-width: 480px) {
  .riff-blog-overlay-enhanced {
    display: none !important;
  }
}

@media (min-width: 481px) and (max-width: 768px) {
  .riff-blog-overlay-enhanced {
    display: none !important;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .riff-blog-overlay-enhanced {
    display: none !important;
  }
}

@media (min-width: 1025px) {
  .riff-blog-overlay-enhanced {
    display: none !important;
  }
}

/* ================================
   スライダー版でも同様に非表示
================================ */

/* スライダー使用時も矢印を非表示 */
.riff-blog-slider-container .riff-blog-overlay-enhanced {
  display: none !important;
}

/* ================================
   アクセシビリティ対応
================================ */

/* 高コントラストモードでも非表示を維持 */
@media (prefers-contrast: high) {
  .riff-blog-overlay-enhanced {
    display: none !important;
  }
}

/* アニメーション削減モードでも非表示を維持 */
@media (prefers-reduced-motion: reduce) {
  .riff-blog-overlay-enhanced {
    display: none !important;
  }
}

/* 印刷時も非表示（元々非表示だが念のため） */
@media print {
  .riff-blog-overlay-enhanced {
    display: none !important;
  }
}

/* ================================
   BLOG タイトルリンク専用スタイル
   Blog Title Link Specific Styles
================================ */

/* タイトルリンクの基本スタイル */
.riff-blog-title-link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
  cursor: pointer;
}

/* タイトルリンクのホバー効果 */
.riff-blog-title-link:hover {
  color: var(--primary-color, #007cba);
  text-decoration: none;
}

/* タイトルリンクのフォーカス状態 */
.riff-blog-title-link:focus {
  outline: 2px solid rgba(0, 124, 186, 0.3);
  outline-offset: 2px;
  border-radius: 4px;
  color: var(--primary-color, #007cba);
}

/* タイトルリンクのアクティブ状態 */
.riff-blog-title-link:active {
  color: var(--accent-color, #ff6b35);
}

/* 記事カード全体のホバー効果は維持（画像とカード浮き上がり） */
.riff-blog-item-enhanced:hover {
  transform: translateY(-12px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* 記事カード内の画像ホバー効果も維持 */
.riff-blog-item-enhanced:hover .riff-blog-image-enhanced img {
  transform: scale(1.1);
}

/* タイトル以外の要素は非クリック状態 */
.riff-blog-image-enhanced,
.riff-blog-meta-enhanced,
.riff-blog-excerpt-enhanced {
  pointer-events: none;
  user-select: none;
}

/* タイトルリンクは常にクリック可能 */
.riff-blog-title-link {
  pointer-events: auto;
  user-select: auto;
}

/* ================================
   レスポンシブ対応
================================ */

/* モバイル・タブレットでのタッチ対応 */
@media (max-width: 1024px) {
  .riff-blog-title-link {
    padding: 5px 0;
    margin: -5px 0;
  }
  
  .riff-blog-title-link:focus {
    outline-offset: 4px;
  }
}

/* スマートフォンでのタップ領域拡大 */
@media (max-width: 768px) {
  .riff-blog-title-link {
    padding: 8px 0;
    margin: -8px 0;
  }
}

/* ================================
   スライダー版での対応
================================ */

/* スライダー使用時のタイトルリンク */
.riff-blog-slider-container .riff-blog-title-link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

.riff-blog-slider-container .riff-blog-title-link:hover {
  color: var(--primary-color, #007cba);
}

/* スライダー使用時のドラッグ制御 */
.riff-blog-slider-container.dragging .riff-blog-title-link {
  pointer-events: none;
  cursor: grabbing !important;
}

/* ================================
   アクセシビリティ対応
================================ */

/* 高コントラストモード */
@media (prefers-contrast: high) {
  .riff-blog-title-link:focus {
    outline: 3px solid currentColor;
    background-color: rgba(255, 255, 255, 0.1);
  }
  
  .riff-blog-title-link:hover {
    background-color: rgba(0, 0, 0, 0.05);
  }
}

/* アニメーション削減モード */
@media (prefers-reduced-motion: reduce) {
  .riff-blog-title-link {
    transition: none !important;
  }
}

/* キーボードナビゲーション強化 */
.riff-blog-title-link:focus-visible {
  outline: 3px solid rgba(0, 124, 186, 0.5);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ================================
   印刷対応
================================ */

@media print {
  .riff-blog-title-link {
    color: #000000 !important;
    text-decoration: underline !important;
  }
  
  .riff-blog-title-link:after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666666;
  }
}

/* ================================
   タイトルリンク優先制御 - 追加CSS
   Title Link Priority Control
================================ */

/* タイトルリンクの最優先設定 */
.riff-blog-title-link {
  position: relative;
  z-index: 10; /* 他の要素より前面に */
  pointer-events: auto !important;
  cursor: pointer !important;
  touch-action: auto !important;
}

/* スライダー使用時のタイトルリンク優先 */
.riff-blog-slider-container .riff-blog-title-link {
  position: relative;
  z-index: 15; /* スライダー内では更に高い優先度 */
  pointer-events: auto !important;
  cursor: pointer !important;
  touch-action: auto !important;
}

/* ドラッグ中でもタイトルリンクは常にクリック可能 */
.riff-blog-slider-container.dragging .riff-blog-title-link {
  pointer-events: auto !important;
  cursor: pointer !important; /* grabbing を上書き */
  z-index: 20;
}

/* タイトルリンクのホバー時カーソル強制 */
.riff-blog-title-link:hover {
  cursor: pointer !important;
}

/* スライダートラックのドラッグ領域制限 */
.riff-blog-slider-track {
  cursor: grab;
  touch-action: pan-y pinch-zoom; /* 垂直スクロールとピンチのみ許可 */
}

/* タイトルリンク領域はドラッグ無効 */
.riff-blog-title-link,
.riff-blog-title-link * {
  touch-action: auto !important;
  user-select: auto !important;
  -webkit-user-select: auto !important;
  -moz-user-select: auto !important;
  -ms-user-select: auto !important;
}

/* タイトル以外の記事要素はドラッグ優先 */
.riff-blog-image-enhanced,
.riff-blog-meta-enhanced,
.riff-blog-excerpt-enhanced {
  pointer-events: none;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* ================================
   モバイル・タッチデバイス対応
================================ */

/* タッチデバイスでのタイトルリンク優先 */
@media (hover: none) and (pointer: coarse) {
  .riff-blog-title-link {
    padding: 10px 5px; /* タップ領域を拡大 */
    margin: -10px -5px;
    cursor: pointer !important;
    touch-action: manipulation !important; /* ダブルタップズーム無効化 */
  }
  
  /* スライダー使用時もタイトルリンク優先 */
  .riff-blog-slider-container .riff-blog-title-link {
    touch-action: manipulation !important;
    pointer-events: auto !important;
  }
  
  /* ドラッグ中でもタイトルは常にタップ可能 */
  .riff-blog-slider-container.dragging .riff-blog-title-link {
    pointer-events: auto !important;
    touch-action: manipulation !important;
  }
}

/* ================================
   iOS Safari 特別対応
================================ */

/* iOS でのタッチ遅延を無効化 */
.riff-blog-title-link {
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  tap-highlight-color: rgba(0, 0, 0, 0.1);
}

/* ================================
   フォーカス状態の強化
================================ */

/* キーボードナビゲーション時の明確な表示 */
.riff-blog-title-link:focus {
  outline: 3px solid rgba(0, 124, 186, 0.6) !important;
  outline-offset: 3px !important;
  background-color: rgba(0, 124, 186, 0.05);
  border-radius: 4px;
  z-index: 25;
}

.riff-blog-title-link:focus-visible {
  outline: 3px solid rgba(0, 124, 186, 0.8) !important;
  outline-offset: 3px !important;
  z-index: 25;
}

/* ================================
   デバッグ用（本番では削除可能）
================================ */

/* 開発時にタイトルリンク領域を確認したい場合は以下のコメントアウトを外す
.riff-blog-title-link {
  background-color: rgba(255, 0, 0, 0.1) !important;
  border: 1px dashed red !important;
}
*/