/* column.css — コラム・ブログ系ページ共通 */

/* ===== Column index ===== */
.column-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.column-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
  display: flex;
  flex-direction: column;
}
.column-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.column-card__img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: .82em;
}
.column-card__body {
  padding: 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.column-card__cat {
  display: inline-block;
  background: rgba(74,144,217,.08);
  color: var(--secondary);
  border: 1px solid rgba(74,144,217,.15);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: .72em;
  font-weight: 600;
  margin-bottom: 8px;
}
.column-card h3 {
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 700;
  color: var(--primary);
  font-size: .95em;
  margin-bottom: 8px;
  line-height: 1.5;
  flex: 1;
}
.column-card__meta {
  font-size: .76em;
  color: var(--text-light);
  display: flex;
  gap: 12px;
  margin-top: 10px;
}
.column-card__link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: .85em;
  margin-top: 10px;
}
.column-card__link:hover { color: var(--primary); }

/* ===== Category filter ===== */
.cat-filter {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 40px;
}
.cat-btn {
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  font-size: .82em;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid rgba(74,144,217,.2);
  color: var(--secondary);
  background: transparent;
  transition: background .2s, color .2s;
  text-decoration: none;
}
.cat-btn:hover,
.cat-btn.active {
  background: var(--secondary);
  color: #fff;
  border-color: var(--secondary);
}

/* ===== Article page ===== */
.article-header { padding: 64px 0 40px; background: var(--primary); }
.article-header .inner { position: relative; z-index: 1; }
.article-cat {
  display: inline-block;
  background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.9);
  padding: 3px 14px;
  border-radius: var(--radius-full);
  font-size: .75em;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: .04em;
}
.article-header h1 {
  font-family: "Zen Maru Gothic", sans-serif;
  color: #fff;
  font-size: 1.9em;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 14px;
  text-wrap: balance;
}
.article-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 12px;
}
.article-meta__author {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.8);
  font-size: .84em;
  text-decoration: none;
}
.article-meta__author:hover { color: #fff; }
.article-meta__date { font-size: .82em; color: rgba(255,255,255,.65); }

.article-body { padding: 56px 0; }
.article-content {
  max-width: 760px;
  margin: 0 auto;
}
.article-content h2 {
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 800;
  color: var(--primary);
  font-size: 1.35em;
  margin: 48px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--secondary);
  line-height: 1.5;
}
.article-content h3 {
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 700;
  color: var(--primary);
  font-size: 1.1em;
  margin: 32px 0 12px;
}
.article-content p {
  font-size: .95em;
  color: var(--text);
  line-height: 2.1;
  margin-bottom: 20px;
}
.article-content ul,
.article-content ol {
  margin: 16px 0 20px 20px;
  font-size: .95em;
  color: var(--text);
  line-height: 2.0;
}

/* Author box */
.author-box {
  display: flex;
  gap: 20px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-top: 56px;
  align-items: flex-start;
}
.author-box__avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(74,144,217,.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.author-box__name {
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 700;
  color: var(--primary);
  font-size: 1em;
  margin-bottom: 4px;
}
.author-box__role {
  font-size: .8em;
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: 8px;
}
.author-box p {
  font-size: .85em;
  color: var(--text-light);
  line-height: 1.8;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .column-grid { grid-template-columns: 1fr; }
  .article-header h1 { font-size: 1.45em; }
  .author-box { flex-direction: column; }
}