/* ==========================================================================
   NEWS SECTION HIERARCHY STYLES
   ========================================================================== */
.tbs-news-section {
  padding: 120px 0;
  background: #0b1528;
  position: relative;
  overflow: hidden;
}

/* 斜めのスリット背景 */
.tbs-news-bg-slit {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(115deg, #111d33 50%, #0b1528 50%);
  z-index: 1;
  pointer-events: none;
}

.tbs-news-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 2;
}

/* ヘッダーエリア */
.tbs-news-header {
  margin-bottom: 60px;
  text-align: center;
}

.tbs-news-header h2 {
  font-size: 2.8rem;
  color: #ffffff;
  font-weight: bold;
  letter-spacing: 0.08em;
  margin: 0 0 10px;
  font-family: sans-serif;
}

.tbs-news-header p {
  color: #8da2c0;
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* レイアウトグリッド */
.tbs-news-grid {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
}

/* 1件目：サムネイル背景の特大ハイライトカード */
.tbs-news-highlight-card {
  flex: 1.2;
  min-width: 320px;
  min-height: 400px;
  /* 画像が見えるように高さを確保 */
  position: relative;
  border-radius: 4px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  transition: transform 0.3s ease;
}

.tbs-news-highlight-card:hover {
  transform: translateY(-5px);
}

/* カード内の全面背景画像 */
.tbs-news-card-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  transition: transform 0.5s ease;
}

.tbs-news-highlight-card:hover .tbs-news-card-bg-img {
  transform: scale(1.05);
  /* ホバー時に画像をうっすら拡大 */
}

/* 文字の視認性をあげるための、下から上への黒グラデーションマスク */
.tbs-news-card-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to top,
    rgba(11, 21, 40, 0.95) 0%,
    rgba(11, 21, 40, 0.6) 50%,
    rgba(0, 0, 0, 0.3) 100%
  );
  z-index: 2;
}

/* カード内のコンテンツ（文字群） */
.tbs-news-card-content {
  position: relative;
  z-index: 3;
  padding: 40px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-sizing: border-box;
  flex-grow: 1;
}

.tbs-news-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 25px;
}

.tbs-news-date-lg {
  font-size: 1rem;
  color: #e2e8f0;
  /* 画像の上で見えやすいように少し明るく */
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.tbs-news-badge {
  color: #fff;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: bold;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.tbs-news-new-tag {
  color: #ff453a;
  font-size: 0.75rem;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.tbs-news-highlight-title {
  margin: 0 0 30px;
  line-height: 1.5;
  font-size: 1.45rem;
}

.tbs-news-highlight-title a {
  color: #ffffff;
  text-decoration: none;
  transition: color 0.2s;
  font-weight: bold;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
  /* タイトルの視認性を確保 */
}

.tbs-news-highlight-title a:hover {
  color: #a4bfe6;
}

.tbs-news-readmore-wrap {
  text-align: right;
  margin-top: auto;
}

.tbs-news-readmore {
  color: #ffffff;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: opacity 0.2s;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.tbs-news-readmore:hover {
  opacity: 0.8;
}

/* 2〜5件目：右側のリスト構造 */
.tbs-news-sub-list {
  flex: 1.5;
  min-width: 320px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.tbs-news-list-item {
  background: rgba(13, 25, 47, 0.6);
  padding: 18px 25px;
  border-radius: 0 4px 4px 0;
  display: flex;
  align-items: center;
  gap: 20px;
  transition:
    background-color 0.2s ease,
    transform 0.2s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.tbs-news-list-item:hover {
  background: rgba(255, 255, 255, 0.05);
  transform: translateX(5px);
}

.tbs-news-date-sm {
  font-size: 0.9rem;
  color: #8da2c0;
  font-weight: 500;
  width: 90px;
  flex-shrink: 0;
}

.tbs-news-title-sm-wrap {
  flex: 1;
  overflow: hidden;
}

.tbs-news-title-sm {
  color: #e2e8f0;
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.5;
  font-weight: 500;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 0.2s;
}

.tbs-news-title-sm:hover {
  color: #ffffff;
}

.tbs-news-arrow {
  font-size: 0.75rem;
  color: #8da2c0;
  font-weight: bold;
  opacity: 0.6;
}

/* 下部共通ボタン */
.tbs-news-btn-wrap {
  margin-top: 60px;
  text-align: center;
}

.tbs-news-viewall-btn {
  display: inline-block;
  padding: 14px 60px;
  border: 1px solid #ffffff;
  color: #ffffff;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 0.2em;
  border-radius: 4px;
  background: transparent;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.tbs-news-viewall-btn:hover {
  background: #ffffff;
  color: #0b1528;
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

.tbs-news-empty {
  text-align: center;
  color: #8da2c0;
  padding: 60px 0;
  margin: 0;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 4px;
  width: 100%;
}