/* ===========================
   Article Page Styles
   =========================== */

/* Article Layout */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.article-wrapper {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

@media (max-width: 1024px) {
  .article-wrapper {
    grid-template-columns: 1fr;
  }
}

/* Article Header */
.article-hero {
  padding: 120px 0 60px;
  background: var(--gradient-hero);
  border-bottom: 1px solid var(--color-border);
}

.article-hero .category {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.article-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 20px;
}

.article-hero .article-meta-info {
  display: flex;
  gap: 24px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  flex-wrap: wrap;
}

.article-hero .article-meta-info span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Article Body */
.article-body {
  padding: 48px 0 80px;
}

.article-content {
  color: var(--color-text);
  line-height: 1.9;
  font-size: 1.05rem;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent-light);
  margin: 48px 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 36px 0 16px;
}

.article-content p {
  margin-bottom: 20px;
  color: #cbd5e1;
}

.article-content ul, .article-content ol {
  margin-bottom: 20px;
  padding-left: 28px;
}

.article-content li {
  margin-bottom: 8px;
  color: #cbd5e1;
}

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

.article-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--color-accent-light);
}

/* Code Blocks */
.article-content pre {
  background: #0d1117;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  overflow-x: auto;
  margin: 24px 0;
  position: relative;
}

.article-content pre::before {
  content: attr(data-lang);
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.article-content code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
}

.article-content p code, .article-content li code {
  background: rgba(79, 70, 229, 0.15);
  color: var(--color-accent-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.88rem;
}

/* Info/Tip/Warning boxes */
.info-box {
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
  border-left: 4px solid;
}

.info-box.tip {
  background: rgba(34, 197, 94, 0.08);
  border-color: var(--color-success);
}

.info-box.info {
  background: rgba(6, 182, 212, 0.08);
  border-color: var(--color-accent);
}

.info-box.warning {
  background: rgba(245, 158, 11, 0.08);
  border-color: var(--color-warning);
}

.info-box .info-title {
  font-weight: 700;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.info-box.tip .info-title { color: var(--color-success); }
.info-box.info .info-title { color: var(--color-accent); }
.info-box.warning .info-title { color: var(--color-warning); }

.info-box p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

/* Table of Contents */
.toc {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 40px;
}

.toc h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc-counter;
}

.toc li {
  counter-increment: toc-counter;
  margin-bottom: 8px;
}

.toc li::before {
  content: counter(toc-counter) ". ";
  color: var(--color-accent);
  font-weight: 600;
}

.toc a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.toc a:hover {
  color: var(--color-accent-light);
}

/* Sidebar */
.article-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.sidebar-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-card ul {
  list-style: none;
  padding: 0;
}

.sidebar-card li {
  margin-bottom: 10px;
}

.sidebar-card a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition);
}

.sidebar-card a:hover {
  color: var(--color-accent);
}

/* Ad space placeholder */
.ad-space {
  background: var(--color-bg-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 32px 0;
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Article Navigation */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.article-nav a {
  display: block;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-decoration: none;
  transition: var(--transition);
}

.article-nav a:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.article-nav .nav-label {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.article-nav .nav-title {
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.95rem;
}

.article-nav .next {
  text-align: right;
}

/* Share buttons */
.share-section {
  margin-top: 48px;
  padding: 24px;
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  text-align: center;
}

.share-section h4 {
  font-size: 0.95rem;
  color: var(--color-text);
  margin-bottom: 16px;
}

.share-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  color: white;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
}

.share-btn:hover { opacity: 0.85; transform: translateY(-1px); }
.share-btn.twitter { background: #1da1f2; }
.share-btn.hatena { background: #00a4de; }
.share-btn.line { background: #06c755; }

/* Responsive */
@media (max-width: 768px) {
  .article-hero { padding: 100px 0 40px; }
  .article-hero h1 { font-size: 1.6rem; }
  .article-nav { grid-template-columns: 1fr; }
  .share-buttons { flex-wrap: wrap; }
}