/* ==========================================
   MarkView Blog - Styles
   Extends styles.css with blog-specific components
   ========================================== */

.blog-header {
  padding: 8rem var(--spacing-md) 3rem;
  text-align: center;
  background: linear-gradient(
    180deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
}

.blog-header h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  margin-bottom: var(--spacing-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
}

.blog-header p {
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.blog-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-md);
}

/* Featured Post */
.blog-featured-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-primary);
  transition: all var(--transition-base);
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  position: relative;
}

.blog-featured-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-primary);
}

.blog-featured-card:hover {
  border-color: var(--primary);
  box-shadow: 0 12px 40px rgba(102, 126, 234, 0.25);
  transform: translateY(-2px);
}

.blog-featured-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-featured-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.blog-featured-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.blog-featured-title a:hover {
  color: var(--primary);
}

.blog-featured-excerpt {
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-lg);
  max-width: 70ch;
}

.blog-featured-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  text-decoration: none;
  transition: gap var(--transition-fast);
  gap: var(--spacing-xs);
}

.blog-featured-link:hover {
  gap: var(--spacing-sm);
}

.blog-featured-image {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  position: relative;
  min-height: 300px;
}

.blog-featured-image::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.15) 0%,
    transparent 70%
  );
  border-radius: var(--radius-lg);
}

.featured-badge {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  color: white !important;
  font-weight: var(--font-bold);
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* Regular Posts Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .blog-featured-card {
    grid-template-columns: 1fr;
    padding: var(--spacing-lg);
  }

  .blog-featured-image {
    min-height: 200px;
    font-size: 5rem;
    order: -1;
  }

  .blog-featured-title {
    font-size: var(--text-2xl);
  }

  .blog-featured-excerpt {
    font-size: var(--text-base);
  }

  .blog-grid {
    grid-template-columns: 1fr;
  }
}

/* Blog Cards */
.blog-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--border-primary);
}

.blog-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

.blog-card-image {
  width: 100%;
  height: 200px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
}

.blog-card-image::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
}

.blog-card-content {
  padding: var(--spacing-lg);
}

.blog-card-date {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.blog-card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.blog-card-title a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.blog-card-title a:hover {
  color: var(--primary);
}

.blog-card-excerpt {
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-lg);
}

.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.blog-tag {
  font-size: var(--text-2xs);
  font-weight: var(--font-semibold);
  padding: 0.25rem 0.75rem;
  background: rgba(102, 126, 234, 0.15);
  color: var(--primary);
  border-radius: var(--radius-2xl);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.blog-card-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: gap var(--transition-fast);
  gap: var(--spacing-xs);
  letter-spacing: var(--tracking-normal);
}

.blog-card-link:hover {
  gap: var(--spacing-sm);
}

.blog-card-link::after {
  content: "→";
  font-size: 1.25rem;
}

/* ==========================================
   Blog Post Page
   ========================================== */

.blog-post-header {
  padding: var(--spacing-2xl) var(--spacing-md);
  text-align: center;
  background: linear-gradient(
    180deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
}

.blog-post-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  letter-spacing: var(--tracking-normal);
  flex-wrap: wrap;
}

.blog-post-tags {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.blog-post-tags .blog-tag {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
}

.blog-post-title {
  font-size: clamp(2.25rem, 5vw, 3rem);
  font-weight: var(--font-extrabold);
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.blog-post-excerpt {
  font-size: var(--text-xl);
  font-weight: var(--font-normal);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

.blog-post-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-md);
}

.blog-post-content {
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  letter-spacing: var(--tracking-normal);
}

/* Blog Post Typography */
.blog-post-content h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: var(--font-bold);
  margin-top: 3.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  scroll-margin-top: 5rem;
}

.blog-post-content h2:first-child {
  margin-top: 0;
}

.blog-post-content h3 {
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  font-weight: var(--font-semibold);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
  scroll-margin-top: 5rem;
}

.blog-post-content h4 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-normal);
}

.blog-post-content h5 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  line-height: var(--leading-normal);
}

.blog-post-content h6 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.blog-post-content p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 75ch;
}

.blog-post-content p + p {
  margin-top: 1.5rem;
}

.blog-post-content ul,
.blog-post-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
  color: var(--text-secondary);
}

.blog-post-content li {
  margin-bottom: 0.75rem;
  padding-left: 0.5rem;
  line-height: var(--leading-relaxed);
}

.blog-post-content li:last-child {
  margin-bottom: 0;
}

.blog-post-content li strong {
  color: var(--text-primary);
  font-weight: var(--font-semibold);
}

.blog-post-content a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(102, 126, 234, 0.3);
  text-underline-offset: 2px;
  transition: all var(--transition-fast);
}

.blog-post-content a:hover {
  color: var(--primary-hover);
  text-decoration-color: var(--primary-hover);
}

.blog-post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  margin: var(--spacing-xl) 0;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-primary);
}

.blog-post-content code {
  background: rgba(102, 126, 234, 0.1);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.875em;
  font-weight: var(--font-medium);
  color: var(--primary);
  border: 1px solid rgba(102, 126, 234, 0.2);
  letter-spacing: var(--tracking-normal);
}

.blog-post-content pre {
  background: var(--bg-tertiary);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-sm);
  line-height: var(--leading-relaxed);
}

.blog-post-content pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
  border: none;
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
}

.blog-post-content blockquote {
  border-left: 4px solid var(--primary);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--text-secondary);
  background: var(--bg-secondary);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  line-height: var(--leading-relaxed);
}

.blog-post-content blockquote p {
  margin-bottom: 0.75rem;
}

.blog-post-content blockquote p:last-child {
  margin-bottom: 0;
}

.blog-post-content strong {
  color: var(--text-primary);
  font-weight: var(--font-semibold);
}

.blog-post-content em {
  font-style: italic;
}

/* CTA Box */
.cta-box {
  background: var(--gradient-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  text-align: center;
  margin: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle at top right,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 50%
  );
  pointer-events: none;
}

.cta-box h3 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  position: relative;
}

.cta-box p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-lg);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-relaxed);
  position: relative;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background: white;
  color: var(--primary);
  font-weight: var(--font-bold);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  letter-spacing: var(--tracking-normal);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.95);
}

/* Table of Contents */
.toc {
  background: rgba(127, 127, 127, 0.1);
  border: 1px solid rgba(127, 127, 127, 0.2);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  margin: 2rem 0;
}

.toc h2 {
  margin-top: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
}

.toc ul {
  margin-bottom: 0;
  padding-left: 1.5rem;
  list-style: disc;
}

.toc li {
  margin-bottom: 0.5rem;
  line-height: var(--leading-relaxed);
}

.toc a {
  color: var(--text-primary);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Author Bio */
.author-bio {
  background: rgba(127, 127, 127, 0.1);
  border: 1px solid rgba(127, 127, 127, 0.2);
  padding: 2rem;
  border-radius: var(--radius-lg);
  margin: 3rem 0;
}

.author-bio h2 {
  margin-top: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
}

.author-bio p {
  margin-bottom: 1rem;
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

.author-bio p:last-child {
  margin-bottom: 0;
}

/* FAQ Section */
.faq-section {
  margin-top: var(--spacing-3xl);
  background: none;
}

.faq-section h2 {
  margin-bottom: var(--spacing-xl);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.faq-item {
  background: rgba(127, 127, 127, 0.1);
  border: 1px solid rgba(127, 127, 127, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-question {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-normal);
}

.faq-answer {
  color: var(--text-secondary);
  font-size: var(--text-base);
  font-weight: var(--font-normal);
  line-height: var(--leading-relaxed);
}

.faq-answer p {
  margin-bottom: var(--spacing-md);
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer strong {
  color: var(--text-primary);
  font-weight: var(--font-semibold);
}

/* Related Posts */
.related-posts {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-3xl);
  border-top: 1px solid var(--border-primary);
}

.related-posts h2 {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.related-post-card {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  transition: all var(--transition-base);
}

.related-post-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.related-post-card h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--spacing-xs);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-tight);
}

.related-post-card h3 a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.related-post-card h3 a:hover {
  color: var(--primary);
}

.related-post-card p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  margin: 0;
  line-height: var(--leading-normal);
}

/* Breadcrumb */
.breadcrumb {
  padding: calc(64px + var(--spacing-lg)) var(--spacing-md) var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.breadcrumb-list {
  display: flex;
  gap: var(--spacing-xs);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-tertiary);
  flex-wrap: wrap;
  letter-spacing: var(--tracking-normal);
}

.breadcrumb-list a {
  color: var(--text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-list a:hover {
  color: var(--primary);
}

/* ==========================================
   Scroll to Top Button
   ========================================== */

.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.scroll-to-top:active {
  transform: translateY(-2px);
}

.scroll-to-top svg {
  color: white;
}

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 768px) {
  .blog-header,
  .blog-post-header {
    padding: 6rem var(--spacing-md) 2rem;
  }

  .blog-header h1 {
    font-size: var(--text-4xl);
    line-height: var(--leading-tight);
  }

  .blog-post-title {
    font-size: var(--text-3xl);
    line-height: var(--leading-tight);
  }

  .blog-header p {
    font-size: var(--text-base);
  }

  .blog-post-excerpt {
    font-size: var(--text-lg);
  }

  .blog-post-content {
    font-size: var(--text-base);
  }

  .blog-post-content h2 {
    font-size: var(--text-2xl);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
  }

  .blog-post-content h3 {
    font-size: var(--text-xl);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
  }

  .blog-post-content h4 {
    font-size: var(--text-lg);
  }

  .blog-post-content p {
    margin-bottom: 1.25rem;
  }

  .blog-post-content pre {
    padding: 1rem;
    margin: 1.5rem 0;
  }

  .blog-post-container {
    padding: var(--spacing-xl) var(--spacing-md);
  }

  .related-posts-grid {
    grid-template-columns: 1fr;
  }

  .scroll-to-top {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .blog-post-meta {
    font-size: var(--text-xs);
    gap: var(--spacing-xs);
  }

  .cta-box {
    padding: var(--spacing-lg);
  }

  .cta-button {
    padding: 0.875rem 1.5rem;
    font-size: var(--text-sm);
  }
}

/* ==========================================
   Print Styles
   ========================================== */

@media print {
  .blog-header,
  .breadcrumb,
  .related-posts,
  .cta-box {
    display: none;
  }

  .blog-post-content {
    color: #000;
  }

  .blog-post-content h2,
  .blog-post-content h3 {
    color: #000;
    page-break-after: avoid;
  }

  .blog-post-content img {
    page-break-inside: avoid;
  }

  .faq-item {
    page-break-inside: avoid;
  }
}