/* ============================================================
   blog.css — sinkaコラム（技術ブログ）専用スタイル
   ============================================================ */

/* ── ブログ一覧 ───────────────────────────── */
.blog-hero-section {
  padding: 120px 0 64px;
  background: #fff;
  position: relative;
  overflow: hidden;
}
.blog-hero-section::before {
  content: '';
  position: absolute;
  width: 480px; height: 480px;
  background: var(--color-cyan);
  border-radius: 50%;
  top: -180px; right: -120px;
  opacity: 0.08;
}

.blog-filter {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 32px 0 40px;
}
.blog-filter-btn {
  background: none;
  border: 1.5px solid var(--color-gray-200);
  border-radius: 50px;
  padding: 7px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--color-gray-400);
  cursor: pointer;
  transition: all .2s;
}
.blog-filter-btn:hover,
.blog-filter-btn.active {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  background: rgba(0,194,224,0.06);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
  margin-bottom: 60px;
}

.blog-card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: #fff;
  border: 1.5px solid var(--color-gray-200);
  border-radius: 16px;
  overflow: hidden;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.10);
  border-color: var(--color-cyan);
}

.blog-card-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  background: linear-gradient(135deg, #f0fdff 0%, #e0f8ff 100%);
  position: relative;
  overflow: hidden;
}
.blog-card-thumb.ai    { background: linear-gradient(135deg,#e6fcff 0%,#b8f5ff 100%); }
.blog-card-thumb.dev   { background: linear-gradient(135deg,#f0fff0 0%,#c8f5c0 100%); }
.blog-card-thumb.nocode { background: linear-gradient(135deg,#fff8e6 0%,#ffe8b0 100%); }
.blog-card-thumb.tool  { background: linear-gradient(135deg,#f5f0ff 0%,#ddd0ff 100%); }

.blog-card-body {
  padding: 24px;
}
.blog-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.blog-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  background: rgba(0,194,224,0.1);
  color: var(--color-cyan);
}
.blog-tag.ai    { background: rgba(0,194,224,0.1); color: var(--color-cyan); }
.blog-tag.dev   { background: rgba(91,189,78,0.1); color: var(--color-green); }
.blog-tag.nocode { background: rgba(245,200,0,0.15); color: #b8950a; }
.blog-tag.tool  { background: rgba(150,80,220,0.1); color: #7c3aed; }
.blog-tag.ops   { background: rgba(232,130,12,0.1); color: var(--color-orange); }

.blog-card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--color-black);
  margin-bottom: 10px;
}
.blog-card-excerpt {
  font-size: 0.83rem;
  color: var(--color-gray-600);
  line-height: 1.75;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem;
  color: var(--color-gray-400);
  border-top: 1px solid var(--color-gray-200);
  padding-top: 14px;
}
.blog-card-meta svg { flex-shrink: 0; }

/* ── 記事詳細 ─────────────────────────────── */
.blog-article-hero {
  padding: 110px 0 56px;
  background: #fff;
  border-bottom: 1px solid var(--color-gray-200);
}
.blog-article-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.blog-article-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 900;
  line-height: 1.35;
  color: var(--color-black);
  margin-bottom: 20px;
}
.blog-article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.82rem;
  color: var(--color-gray-400);
  flex-wrap: wrap;
}
.blog-article-meta .sep { color: var(--color-gray-200); }

/* ── 本文レイアウト ────────────────────────── */
.blog-body-section {
  padding: 60px 0 80px;
  background: #fafafa;
}
.blog-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 56px;
  align-items: start;
}
@media (max-width: 900px) {
  .blog-layout { grid-template-columns: 1fr; }
  .blog-sidebar { display: none; }
}

/* ── 記事本文 ──────────────────────────────── */
.blog-content {
  background: #fff;
  border-radius: 16px;
  padding: 48px;
  border: 1px solid var(--color-gray-200);
}
@media (max-width: 600px) {
  .blog-content { padding: 28px 20px; }
}

.blog-content h2 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-black);
  border-left: 4px solid var(--color-cyan);
  padding-left: 14px;
  margin: 48px 0 20px;
  line-height: 1.4;
}
.blog-content h2:first-child { margin-top: 0; }

.blog-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-black);
  margin: 32px 0 12px;
  padding-left: 4px;
  border-bottom: 1px solid var(--color-gray-200);
  padding-bottom: 8px;
}

.blog-content p {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-gray-600);
  margin-bottom: 20px;
}

.blog-content ul,
.blog-content ol {
  margin: 8px 0 24px 20px;
}
.blog-content li {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-gray-600);
  margin-bottom: 6px;
}
.blog-content ul li::marker { color: var(--color-cyan); }

.blog-content strong {
  font-weight: 700;
  color: var(--color-black);
}

.blog-content a {
  color: var(--color-cyan);
  text-decoration: underline;
}

/* コードブロック */
.blog-content code {
  font-family: 'Menlo', 'Consolas', 'Monaco', monospace;
  font-size: 0.85em;
  background: #f0f4f8;
  color: #c0392b;
  padding: 2px 6px;
  border-radius: 4px;
}
.blog-content pre {
  background: #1e2330;
  color: #e2e8f0;
  border-radius: 12px;
  padding: 24px;
  overflow-x: auto;
  margin: 24px 0;
  position: relative;
}
.blog-content pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.7;
}
.blog-content pre .comment { color: #718096; }
.blog-content pre .string  { color: #68d391; }
.blog-content pre .keyword { color: #63b3ed; }
.blog-content pre .number  { color: #f6ad55; }

/* 注目ボックス */
.tip-box, .warn-box, .info-box {
  border-radius: 10px;
  padding: 20px 24px;
  margin: 28px 0;
  display: flex;
  gap: 14px;
}
.tip-box {
  background: rgba(0,194,224,0.07);
  border-left: 4px solid var(--color-cyan);
}
.warn-box {
  background: rgba(232,130,12,0.08);
  border-left: 4px solid var(--color-orange);
}
.info-box {
  background: rgba(91,189,78,0.08);
  border-left: 4px solid var(--color-green);
}
.tip-box .box-icon, .warn-box .box-icon, .info-box .box-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  line-height: 1.5;
}
.tip-box .box-body p,
.warn-box .box-body p,
.info-box .box-body p {
  margin-bottom: 0;
  font-size: 0.9rem;
}
.tip-box .box-body strong,
.warn-box .box-body strong,
.info-box .box-body strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--color-black);
}

/* 比較テーブル */
.blog-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 24px 0;
}
.blog-content th {
  background: var(--color-gray-100);
  font-weight: 700;
  padding: 12px 16px;
  text-align: left;
  border: 1px solid var(--color-gray-200);
  color: var(--color-black);
}
.blog-content td {
  padding: 11px 16px;
  border: 1px solid var(--color-gray-200);
  color: var(--color-gray-600);
  line-height: 1.6;
}
.blog-content tr:nth-child(even) td {
  background: #f9fafb;
}

/* ステップ */
.step-list {
  list-style: none;
  padding: 0;
  margin: 24px 0;
}
.step-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-gray-200);
}
.step-list li:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-cyan);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-family: 'Inter', sans-serif;
}
.step-body strong {
  display: block;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 6px;
  font-size: 0.95rem;
}
.step-body p {
  margin-bottom: 0 !important;
}

/* ── サイドバー ────────────────────────────── */
.blog-sidebar {
  position: sticky;
  top: 90px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.blog-toc {
  background: #fff;
  border-radius: 12px;
  padding: 24px;
  border: 1px solid var(--color-gray-200);
}
.blog-toc h4 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-gray-400);
  margin-bottom: 16px;
}
.blog-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc;
}
.blog-toc li {
  counter-increment: toc;
  margin-bottom: 10px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--color-gray-600);
  padding-left: 24px;
  position: relative;
}
.blog-toc li::before {
  content: counter(toc);
  position: absolute;
  left: 0;
  top: 0;
  width: 16px;
  height: 16px;
  background: var(--color-cyan);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 800;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.blog-toc a {
  text-decoration: none;
  color: var(--color-gray-600);
}
.blog-toc a:hover { color: var(--color-cyan); }

.blog-cta-box {
  background: linear-gradient(135deg, #e6fcff 0%, #f0f8ff 100%);
  border-radius: 12px;
  padding: 24px;
  border: 1px solid rgba(0,194,224,0.2);
  text-align: center;
}
.blog-cta-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 10px;
  line-height: 1.5;
}
.blog-cta-box p {
  font-size: 0.8rem;
  color: var(--color-gray-600);
  margin-bottom: 16px;
  line-height: 1.7;
}
.blog-cta-box .btn {
  font-size: 0.82rem;
  padding: 10px 20px;
}

/* ── 関連記事 ──────────────────────────────── */
.blog-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 768px) {
  .blog-related-grid { grid-template-columns: 1fr; }
}
.blog-related-card {
  display: block;
  text-decoration: none;
  background: #fff;
  border: 1.5px solid var(--color-gray-200);
  border-radius: 12px;
  padding: 20px;
  transition: all .2s;
}
.blog-related-card:hover {
  border-color: var(--color-cyan);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.blog-related-card .rc-cat {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-cyan);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.blog-related-card h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-black);
  line-height: 1.5;
}

/* ── ブログパンくず ────────────────────────── */
.blog-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-gray-400);
  margin-bottom: 24px;
}
.blog-breadcrumb a {
  color: var(--color-gray-400);
  text-decoration: none;
}
.blog-breadcrumb a:hover { color: var(--color-cyan); }
.blog-breadcrumb span { color: var(--color-gray-200); }

/* ── レスポンシブ ─────────────────────────── */
@media (max-width: 768px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-content { padding: 24px 16px; }
}

/* ── blog ページ CTA ボタン小型化 ── */
.sp-cta-actions .btn {
  padding: 8px 20px;
  font-size: 0.82rem;
  min-width: unset;
}
.blog-cta-box .btn {
  padding: 8px 18px;
  font-size: 0.82rem;
}