/* ══════════════════════════════════════
   BLOG.CSS — 部落格列表頁 + 文章頁
   引用 style.css 既有變數（--ink, --accent, --ff-serif 等）
══════════════════════════════════════ */

/* ══════════════════════════════════════
   BLOG LIST PAGE
══════════════════════════════════════ */
.blog-list-section { background: var(--surface); }

.blog-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.blog-list-grid--related { margin-top: 24px; }

.blog-list-card {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.blog-list-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,77,0,0.3);
  box-shadow: var(--shadow);
}
.blc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.blc-category {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(74,144,217,0.1);
  border: 1px solid rgba(74,144,217,0.25);
  color: var(--accent2);
  white-space: nowrap;
}
.blc-readtime {
  font-size: 11px;
  color: var(--text-3);
  font-family: var(--ff-mono);
  white-space: nowrap;
}
.blc-title {
  font-family: var(--ff-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.45;
  flex: 1;
}
.blc-excerpt {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.7;
}
.blc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  margin-top: auto;
  border-top: 1px solid var(--line);
}
.blc-date {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--text-3);
}
.blc-arrow {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
  transition: letter-spacing 0.2s;
}
.blog-list-card:hover .blc-arrow { letter-spacing: 0.5px; }

.blog-empty {
  text-align: center;
  color: var(--text-3);
  padding: 60px 0;
  font-size: 15px;
}

.blog-forum-link {
  text-align: center;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.blog-forum-link p {
  font-size: 14px;
  color: var(--text-2);
  margin-bottom: 14px;
}

/* ══════════════════════════════════════
   ARTICLE PAGE
══════════════════════════════════════ */
.article-hero {
  padding: 128px 0 48px;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
}
.article-category {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 100px;
  background: rgba(255,77,0,0.1);
  border: 1px solid rgba(255,77,0,0.25);
  color: var(--accent);
  margin-bottom: 16px;
}
.article-title {
  font-family: var(--ff-serif);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 900;
  color: var(--text-1);
  line-height: 1.35;
  margin-bottom: 20px;
  max-width: 780px;
}
.article-meta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-3);
}

/* Article body layout */
.article-section { background: var(--surface); padding-top: 56px; }
.article-container {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 56px;
  align-items: start;
}

.article-body {
  max-width: 720px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--text-2);
}
.article-lead {
  font-size: 17px;
  color: var(--text-1);
  line-height: 1.8;
  padding-bottom: 24px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.article-body h2 {
  font-family: var(--ff-serif);
  font-size: 23px;
  font-weight: 700;
  color: var(--text-1);
  margin: 40px 0 16px;
  line-height: 1.4;
}
.article-body p { margin-bottom: 18px; }
.article-body ul,
.article-body ol {
  margin: 0 0 20px;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.article-body li { line-height: 1.75; }
.article-body strong { color: var(--text-1); font-weight: 600; }
.article-body code {
  font-family: var(--ff-mono);
  font-size: 0.88em;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 2px 6px;
  color: var(--accent2);
}
.article-body pre {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  overflow-x: auto;
  margin-bottom: 22px;
}
.article-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: #d4d4d4;
  font-size: 13px;
  line-height: 1.7;
  white-space: pre;
}

/* Sidebar */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 84px;
}
.article-cta-card {
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
}
.article-cta-card--alt { background: var(--paper); }
.article-cta-card h3 {
  font-family: var(--ff-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 8px;
}
.article-cta-card p {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.65;
  margin-bottom: 14px;
}
.btn-full { width: 100%; justify-content: center; }

/* Tags */
.article-tags-wrap { padding: 32px 0 8px; background: var(--surface); }
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 720px;
}
.article-tag {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 100px;
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--text-3);
}

/* Related posts */
.related-section { background: var(--surface); padding-top: 24px; }
.related-title {
  font-family: var(--ff-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: 20px;
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .blog-list-grid { grid-template-columns: 1fr 1fr; }
  .article-container { grid-template-columns: 1fr; gap: 32px; }
  .article-sidebar {
    position: static;
    flex-direction: row;
  }
  .article-cta-card { flex: 1; }
}
@media (max-width: 640px) {
  .article-hero { padding: 104px 0 36px; }
  .blog-list-grid { grid-template-columns: 1fr; }
  .article-sidebar { flex-direction: column; }
  .article-body { font-size: 15px; }
  .article-body h2 { font-size: 20px; }
  .article-meta { gap: 12px; font-size: 12px; }
}