/* ==========================================================================
   NEWSセクション・BLOGセクション スタイル
   ========================================================================== */

/* フィルターボタンのスタイル改良 */
.riff-news-filters-new,
.riff-blog-filters-new {
  text-align: center;
  margin-bottom: 40px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.riff-news-filter-buttons,
.riff-blog-filter-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.riff-news-filter-btn,
.riff-blog-filter-btn {
  background: #f8f9fa;
  color: var(--text-color);
  border: 2px solid #e9ecef;
  padding: 12px 24px;
  border-radius: 25px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.riff-news-filter-btn:before,
.riff-blog-filter-btn:before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.5s ease;
}

.riff-news-filter-btn:hover:before,
.riff-blog-filter-btn:hover:before {
  left: 100%;
}

.riff-news-filter-btn:hover,
.riff-blog-filter-btn:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 124, 186, 0.3);
}

.riff-news-filter-btn.active,
.riff-blog-filter-btn.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  box-shadow: 0 6px 20px rgba(0, 124, 186, 0.4);
}

/* NEWSグリッドの改良 */
.riff-news-grid-new,
.riff-blog-grid-new {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-bottom: 50px;
}

.riff-news-item-new,
.riff-blog-item-new {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  transform: translateY(0);
}

.riff-news-item-new:hover,
.riff-blog-item-new:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.riff-news-link,
.riff-blog-link {
  display: block;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

/* 画像エリアの改良 */
.riff-news-image-new,
.riff-blog-image-new {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

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

.riff-news-item-new:hover .riff-news-image-new img,
.riff-blog-item-new:hover .riff-blog-image-new img {
  transform: scale(1.08);
}

/* オーバーレイ効果 */
.riff-news-image-new:after,
.riff-blog-image-new:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(0, 124, 186, 0.8) 0%,
    rgba(255, 107, 53, 0.8) 100%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
}

.riff-news-item-new:hover .riff-news-image-new:after,
.riff-blog-item-new:hover .riff-blog-image-new:after {
  opacity: 1;
}

/* 記事内容エリアの改良 */
.riff-news-content-new,
.riff-blog-content-new {
  padding: 25px;
  display: flex;
  flex-direction: column;
  height: calc(100% - 200px);
}

.riff-news-meta-new,
.riff-blog-meta-new {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  font-size: 13px;
  color: var(--text-light);
}

.riff-news-meta-new time,
.riff-blog-meta-new time {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.riff-news-meta-new time:before,
.riff-blog-meta-new time:before {
  content: "📅";
  font-size: 12px;
}

.riff-news-category-new,
.riff-blog-category-new {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--accent-color)
  );
  color: white;
  padding: 4px 12px;
  border-radius: 15px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.riff-news-item-title-new,
.riff-blog-item-title-new {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-color);
  margin-bottom: 12px;
  transition: color 0.3s ease;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.riff-news-link:hover .riff-news-item-title-new,
.riff-blog-link:hover .riff-blog-item-title-new {
  color: var(--primary-color);
}

.riff-blog-excerpt-new {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.6;
  margin-top: auto;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* セクションボタンの改良 */
.riff-news-button-new,
.riff-blog-button-new {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--accent-color)
  );
  color: white;
  padding: 16px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 124, 186, 0.3);
}

.riff-news-button-new:before,
.riff-blog-button-new: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-news-button-new:hover:before,
.riff-blog-button-new:hover:before {
  left: 100%;
}

.riff-news-button-new:hover,
.riff-blog-button-new:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 124, 186, 0.4);
  color: white;
}

.riff-news-button-new svg,
.riff-blog-button-new svg {
  transition: transform 0.3s ease;
}

.riff-news-button-new:hover svg,
.riff-blog-button-new:hover svg {
  transform: translateX(5px);
}

/* アニメーション効果 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.fade-in[data-delay="0.1s"] {
  animation-delay: 0.1s;
}
.fade-in[data-delay="0.2s"] {
  animation-delay: 0.2s;
}
.fade-in[data-delay="0.3s"] {
  animation-delay: 0.3s;
}
.fade-in[data-delay="0.4s"] {
  animation-delay: 0.4s;
}
.fade-in[data-delay="0.5s"] {
  animation-delay: 0.5s;
}
.fade-in[data-delay="0.6s"] {
  animation-delay: 0.6s;
}
.fade-in[data-delay="0.7s"] {
  animation-delay: 0.7s;
}
.fade-in[data-delay="0.8s"] {
  animation-delay: 0.8s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* セクション共通のスタイル */
.riff-news-section-fullwidth,
.riff-blog-section-fullwidth {
  padding: 80px 0;
  position: relative;
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.riff-news-container,
.riff-blog-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 30px;
}

.riff-news-header,
.riff-blog-header {
  text-align: center;
  margin-bottom: 60px;
}

.riff-news-title-new,
.riff-blog-title-new {
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-color);
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
  letter-spacing: 2px;
}

.riff-news-title-new:after,
.riff-blog-title-new:after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 2px;
}

.riff-news-subtitle-new,
.riff-blog-subtitle-new {
  font-size: 1.2rem;
  color: var(--text-light);
  font-weight: 400;
  margin-bottom: 0;
}

.riff-news-button-wrap-new,
.riff-blog-button-wrap-new {
  text-align: center;
  margin-top: 50px;
}

/* ロード状態 */
.loading-state {
  display: none;
  text-align: center;
  padding: 40px;
  color: var(--text-light);
}

.loading-state.active {
  display: block;
}

.loading-spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 15px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* フィルター状態のトランジション */
.riff-news-item-new,
.riff-blog-item-new {
  transition: all 0.4s ease, opacity 0.3s ease, transform 0.3s ease;
}

.riff-news-item-new.filtered-out,
.riff-blog-item-new.filtered-out {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

/* レスポンシブ対応 */
@media (max-width: 1200px) {
  .riff-news-container,
  .riff-blog-container {
    padding: 0 25px;
  }

  .riff-news-grid-new,
  .riff-blog-grid-new {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
  }
}

@media (max-width: 768px) {
  .riff-news-section-fullwidth,
  .riff-blog-section-fullwidth {
    padding: 60px 0;
  }

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

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

  .riff-news-title-new,
  .riff-blog-title-new {
    font-size: 2.2rem;
  }

  .riff-news-subtitle-new,
  .riff-blog-subtitle-new {
    font-size: 1rem;
  }

  .riff-news-grid-new,
  .riff-blog-grid-new {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .riff-news-filter-buttons,
  .riff-blog-filter-buttons {
    gap: 8px;
  }

  .riff-news-filter-btn,
  .riff-blog-filter-btn {
    padding: 10px 18px;
    font-size: 13px;
  }

  .riff-news-content-new,
  .riff-blog-content-new {
    padding: 20px;
  }

  .riff-news-item-title-new,
  .riff-blog-item-title-new {
    font-size: 16px;
  }

  .riff-news-button-wrap-new,
  .riff-blog-button-wrap-new {
    margin-top: 40px;
  }

  .riff-news-button-new,
  .riff-blog-button-new {
    padding: 14px 28px;
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  .riff-news-container,
  .riff-blog-container {
    padding: 0 15px;
  }

  .riff-news-title-new,
  .riff-blog-title-new {
    font-size: 1.8rem;
    letter-spacing: 1px;
  }

  .riff-news-filters-new,
  .riff-blog-filters-new {
    padding: 15px;
    margin-bottom: 30px;
  }

  .riff-news-filter-buttons,
  .riff-blog-filter-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .riff-news-filter-btn,
  .riff-blog-filter-btn {
    text-align: center;
  }

  .riff-news-meta-new,
  .riff-blog-meta-new {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}