/* Article Page Styles - Dark Theme */

/* Reading Progress Indicator */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  width: 0%;
  z-index: 1000;
  transition: width 100ms ease;
}

/* Article Navigation */
.article-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
}

.article-nav .nav-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s;
}

.article-nav a:hover {
  color: var(--accent-primary);
  background: var(--bg-card);
}

.nav-home {
  font-size: 1.125rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Article Container */
.article-container {
  max-width: 800px;
  margin: 6rem auto 2rem;
  padding: 0 2rem;
}

/* Article Header */
.article-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
}

.article-meta time {
  color: var(--accent-primary);
  font-weight: 600;
}

.reading-time {
  color: var(--text-muted);
}

.article-header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  margin: 0;
  color: var(--text-primary);
  font-weight: 800;
}

/* Article Content */
.article-content {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content h2 {
  margin: 3rem 0 1.5rem;
  font-size: 2rem;
  line-height: 1.3;
  color: var(--text-primary);
  font-weight: 700;
}

.article-content h3 {
  margin: 2.5rem 0 1rem;
  font-size: 1.5rem;
  line-height: 1.35;
  color: var(--text-primary);
  font-weight: 700;
}

.article-content h4 {
  margin: 2rem 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.article-content p {
  margin: 1.5rem 0;
}

.article-content a {
  color: var(--accent-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-primary);
  transition: all 0.3s;
}

.article-content a:hover {
  color: var(--accent-secondary);
  border-bottom-color: var(--accent-secondary);
}

/* Lists */
.article-content ul,
.article-content ol {
  margin: 1.5rem 0;
  padding-left: 2rem;
}

.article-content li {
  margin: 0.75rem 0;
  color: var(--text-secondary);
}

.article-content li::marker {
  color: var(--accent-primary);
}

/* Blockquotes */
.article-content blockquote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  border-left: 4px solid var(--accent-primary);
  background: var(--bg-card);
  border-radius: 0 12px 12px 0;
  font-style: italic;
  color: var(--text-primary);
}

.article-content blockquote p {
  margin: 0.5rem 0;
}

/* Code */
.article-content code {
  background: var(--bg-card);
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 0.9em;
  color: var(--accent-primary);
  border: 1px solid var(--border);
}

.article-content pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: 12px;
  overflow-x: auto;
  margin: 2rem 0;
}

.article-content pre code {
  background: none;
  padding: 0;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Images */
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 2.5rem 0;
  border: 1px solid var(--border);
}

.article-content figure {
  margin: 2.5rem 0;
}

.article-content figcaption {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Tables */
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.article-content th,
.article-content td {
  padding: 1rem;
  border: 1px solid var(--border);
  text-align: left;
}

.article-content th {
  background: var(--bg-card);
  font-weight: 700;
  color: var(--text-primary);
}

.article-content td {
  color: var(--text-secondary);
}

.article-content tr:nth-child(even) td {
  background: rgba(25, 25, 35, 0.3);
}

/* Horizontal Rule */
.article-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

/* Strong and Emphasis */
.article-content strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-content em {
  color: var(--text-primary);
}

/* Back to Articles Button */
.back-to-articles {
  max-width: 800px;
  margin: 4rem auto 2rem;
  padding: 0 2rem;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  backdrop-filter: blur(12px);
}

.btn-back:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 8px 24px var(--glow);
  transform: translateX(-4px);
}

/* Responsive */
@media (max-width: 768px) {
  .article-container {
    margin: 5rem auto 1rem;
    padding: 0 1rem;
  }

  .article-nav {
    padding: 1rem;
  }

  .article-header h1 {
    font-size: 1.75rem;
  }

  .article-content {
    font-size: 1rem;
  }

  .article-content h2 {
    font-size: 1.5rem;
  }

  .article-content h3 {
    font-size: 1.25rem;
  }

  .back-to-articles {
    padding: 0 1rem;
  }
}