/* ============================================================
   ブログページ専用CSS
   ============================================================ */

/* ---------- Blog Header ---------- */
.blog-header {
  padding: calc(var(--header-height) + 48px) 0 32px;
  text-align: center;
}

/* ---------- Tag Filters ---------- */
.blog-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  font-family: var(--font-jp);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 20px;
  border-radius: 100px;
  border: 1px solid var(--border-light);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-base);
}

.filter-btn:hover {
  background: rgba(241, 245, 249, 0.05);
  color: var(--text-primary);
}

.filter-btn.active {
  background: rgba(241, 245, 249, 0.1);
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.filter-btn[data-tag="admu"].active {
  background: rgba(200, 169, 122, 0.15);
  color: var(--color-admu);
  border-color: var(--color-admu);
}

.filter-btn[data-tag="logiction"].active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--color-logiction);
  border-color: var(--color-logiction);
}

.filter-btn[data-tag="shiseviz"].active {
  background: rgba(0, 200, 255, 0.15);
  color: var(--color-shiseviz);
  border-color: var(--color-shiseviz);
}

.filter-btn[data-tag="seo"].active {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-emerald);
  border-color: var(--color-emerald);
}

/* ---------- Blog Grid ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

@media (max-width: 480px) {
  .blog-grid { grid-template-columns: 1fr; }
}

/* ---------- Blog Article Card ---------- */
.blog-article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
}

.blog-article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--border-light);
}

.blog-article-card a {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.blog-article-thumb {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: var(--bg-secondary);
}

.blog-article-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.blog-article-date {
  font-size: 12px;
  color: var(--text-muted);
}

.blog-article-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
  flex: 1;
}

.blog-article-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- No Results ---------- */
.blog-no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 15px;
  grid-column: 1 / -1;
}

/* ---------- Blog Single Article ---------- */
.article-page {
  padding: calc(var(--header-height) + 24px) 0 60px;
}

.article-container {
  max-width: 780px;
  margin: 0 auto;
  padding: var(--container-padding);
}

.article-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-header .blog-article-meta {
  margin-bottom: 16px;
}

.article-header h1 {
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.4;
}

/* Article Body — ウソップが生成するHTML記事のスタイリング */
.article-body h2 {
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 700;
  margin: 48px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-body h3 {
  font-size: clamp(16px, 2.5vw, 20px);
  font-weight: 600;
  margin: 32px 0 12px;
}

.article-body p {
  font-size: 15px;
  line-height: 2;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.article-body ul, .article-body ol {
  margin: 16px 0;
  padding-left: 24px;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}

.article-body a {
  color: var(--color-shiseviz);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-body a:hover { opacity: 0.8; }

.article-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Article Footer CTA */
.article-cta {
  margin-top: 48px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  text-align: center;
}

.article-cta h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.article-cta p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* ---------- Pagination ---------- */
.blog-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}

.blog-pagination button {
  font-family: var(--font-jp);
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--border-light);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-base);
}

.blog-pagination button:hover,
.blog-pagination button.active {
  background: rgba(241, 245, 249, 0.1);
  color: var(--text-primary);
}