h2 {
    border-left: none;
    padding: 0px 30px 0px 5px;
}

/*タイトル画像と文字*/
.overlay-card .thumb-img {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    background-size: cover;
    background-position: center;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.overlay-card .thumb-title {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.overlay-card .thumb-title h2 {
    margin: 0;
    font-size: 1.2rem;
    line-height: 1.4;
    color: #fff;
    transition: transform 0.3s ease;
}

/* Hover エフェクト */
.overlay-card:hover .thumb-img {
    filter: brightness(1.1); /* 少し明るく */
    transform: scale(1.03);  /* 少し拡大 */
}

.overlay-card:hover .thumb-title h2 {
    transform: scale(1.05); /* タイトル文字を少し拡大 */
}

/*続きを読むボタン*/
.readmore {
    display: block;
    width: 100%;
    margin-top: 12px;
    padding: 12px 0;
    text-align: center;
    background-color: #fff;
    color: #0078d4;
    border: 2px solid #0078d4;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

/* Hover時：ふわっと青背景 + 白文字 */
.readmore:hover {
    background-color: rgba(0, 120, 212, 0.15); /* 半透明でふんわり */
    color: #0078d4; /* 文字は青のまま */
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08); /* 軽い浮き上がり感 */
}



/* 下のコンテンツとの間隔を確保 */
.post-card .content {
    padding-bottom: 24px; /* ボタン下に余白を追加 */
    border-bottom: 1px solid #e0e0e0; /* 線で区切る場合 */
    margin-bottom: 24px;
}

/* 記事フィルター */
.filter-bar {
  margin: 20px 0;
  text-align: center;
}

.filter-btn {
  margin: 5px;
  padding: 6px 12px;
  border: 1px solid #ccc; /* 初期はグレー */
  background: white;
  color: #333; /* 初期は文字黒 */
  cursor: pointer;
  border-radius: 4px;
  font-size: 14px;
  transition: 0.3s;
}

/* Power Apps */
.filter-btn[data-filter="Power Apps"] {
  border-color: #5C005C;
  color: #5C005C;
}
.filter-btn[data-filter="Power Apps"].active,
.filter-btn[data-filter="Power Apps"]:hover {
  background: #5C005C;
  color: white;
}

/* Power Automate */
.filter-btn[data-filter="Power Automate"] {
  border-color: #0078d4;
  color: #0078d4;
}
.filter-btn[data-filter="Power Automate"].active,
.filter-btn[data-filter="Power Automate"]:hover {
  background: #0078d4;
  color: white;
}

/* Power BI */
.filter-btn[data-filter="Power BI"] {
  border-color: #FFB900;
  color: #FFB900;
}
.filter-btn[data-filter="Power BI"].active,
.filter-btn[data-filter="Power BI"]:hover {
  background: #FFB900;
  color: white;
}

/* Power Automate Desktop */
.filter-btn[data-filter="Power Automate Desktop"] {
  border-color: #0066FF;
  color: #0066FF;
}
.filter-btn[data-filter="Power Automate Desktop"].active,
.filter-btn[data-filter="Power Automate Desktop"]:hover {
  background: #0066FF;
  color: white;
}

/* すべてボタン */
.filter-btn[data-filter="all"] {
  border-color: #888;
  color: #888;
}
.filter-btn[data-filter="all"].active,
.filter-btn[data-filter="all"]:hover {
  background: #888;
  color: white;
}