/* ============================================
   Blog Post Page Styles - Specifys.ai
   ============================================
   Styles for individual blog post pages
   Following design guidelines from PAGE-CREATION-GUIDE.md
*/

/* ============================================
   Reading Progress Bar
   ============================================ */

.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color, #FF6B35), var(--primary-hover, #FF8551));
  z-index: var(--z-header, 99999);
  transition: width 0.1s ease-out;
}

/* ============================================
   Breadcrumbs
   ============================================ */

.breadcrumbs {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg, 1.5rem) var(--spacing-lg, 1.5rem) var(--spacing-md, 1rem);
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--text-secondary, #666);
}

.breadcrumbs a {
  color: var(--text-secondary, #666);
  text-decoration: none;
  transition: color var(--transition-normal, 0.3s ease);
}

.breadcrumbs a:hover {
  color: var(--primary-color, #FF6B35);
  text-decoration: none;
}

.breadcrumbs .separator {
  margin: 0 var(--spacing-xs, 0.25rem);
  color: var(--text-muted, #999);
}

.breadcrumbs .current {
  color: var(--text-color, #333);
  font-weight: var(--font-weight-semibold, 600);
}

/* ============================================
   Post Content Container
   ============================================ */

.post-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg, 1.5rem) var(--spacing-2xl, 3rem);
  background: var(--bg-primary, #ffffff);
}

/* ============================================
   Post Header
   ============================================ */

.post-header {
  margin-bottom: var(--spacing-2xl, 3rem);
  padding-bottom: var(--spacing-xl, 2rem);
  border-bottom: 2px solid var(--border-light, #e9ecef);
}

.post-title {
  font-size: clamp(var(--font-size-2xl, 1.5rem), 4vw, var(--font-size-4xl, 2.25rem));
  font-weight: var(--font-weight-bold, 700);
  line-height: var(--line-height-tight, 1.2);
  color: var(--text-color, #333);
  margin: 0 0 var(--spacing-lg, 1.5rem) 0;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: -0.02em;
}

/* ============================================
   Post Meta (Date, Author, Reading Time)
   ============================================ */

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg, 1.5rem);
  margin-bottom: var(--spacing-lg, 1.5rem);
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--text-secondary, #666);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs, 0.25rem);
}

.meta-item i {
  font-size: var(--font-size-base, 1rem);
  color: var(--primary-color, #FF6B35);
  width: 18px;
  text-align: center;
}

.post-date,
.post-author,
.reading-time {
  color: var(--text-secondary, #666);
}

/* ============================================
   Post Tags Header
   ============================================ */

.post-tags-header {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs, 0.25rem);
  margin-bottom: var(--spacing-lg, 1.5rem);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs, 0.25rem) var(--spacing-sm, 0.5rem);
  background: var(--primary-light, #FFF4F0);
  color: var(--primary-color, #FF6B35);
  border-radius: var(--border-radius-sm, 0.25rem);
  font-size: var(--font-size-xs, 0.75rem);
  font-weight: var(--font-weight-semibold, 600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   Post Description (Quote)
   ============================================ */

.post-description {
  position: relative;
  padding: var(--spacing-lg, 1.5rem);
  padding-left: var(--spacing-2xl, 3rem);
  background: var(--primary-light, #FFF4F0);
  border-left: 4px solid var(--primary-color, #FF6B35);
  border-radius: var(--border-radius-md, 0.5rem);
  margin-bottom: var(--spacing-lg, 1.5rem);
}

.quote-icon {
  position: absolute;
  top: var(--spacing-lg, 1.5rem);
  left: var(--spacing-lg, 1.5rem);
  font-size: var(--font-size-2xl, 1.5rem);
  color: var(--primary-color, #FF6B35);
  opacity: 0.3;
}

.post-description p {
  margin: 0;
  font-size: var(--font-size-lg, 1.125rem);
  line-height: var(--line-height-normal, 1.6);
  color: var(--text-color, #333);
  font-style: italic;
}

/* ============================================
   Table of Contents
   ============================================ */

.table-of-contents {
  background: var(--bg-secondary, #f5f5f5);
  border: 1px solid var(--border-light, #e9ecef);
  border-radius: var(--border-radius-lg, 1rem);
  padding: var(--spacing-lg, 1.5rem);
  margin-bottom: var(--spacing-xl, 2rem);
}

.table-of-contents h3 {
  font-size: var(--font-size-lg, 1.125rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-color, #333);
  margin: 0 0 var(--spacing-md, 1rem) 0;
  font-family: 'Montserrat', sans-serif;
}

.table-of-contents nav {
  font-size: var(--font-size-sm, 0.875rem);
}

.table-of-contents nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.table-of-contents nav a {
  color: var(--text-secondary, #666);
  text-decoration: none;
  display: block;
  padding: var(--spacing-xs, 0.25rem) 0;
  transition: color var(--transition-normal, 0.3s ease);
}

.table-of-contents nav a:hover {
  color: var(--primary-color, #FF6B35);
  text-decoration: none;
}

/* ============================================
   Post Body Content
   ============================================ */

.post-body {
  font-size: var(--font-size-base, 1rem);
  line-height: var(--line-height-normal, 1.7);
  color: var(--text-color, #333);
  margin-bottom: var(--spacing-2xl, 3rem);
}

/* Typography within post body */
.post-body h1,
.post-body h2,
.post-body h3,
.post-body h4,
.post-body h5,
.post-body h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-color, #333);
  margin-top: var(--spacing-2xl, 3rem);
  margin-bottom: var(--spacing-lg, 1.5rem);
  line-height: var(--line-height-tight, 1.2);
  letter-spacing: -0.02em;
}

.post-body h1 {
  font-size: var(--font-size-3xl, 1.875rem);
}

.post-body h2 {
  font-size: var(--font-size-2xl, 1.5rem);
}

.post-body h3 {
  font-size: var(--font-size-xl, 1.25rem);
}

.post-body h4 {
  font-size: var(--font-size-lg, 1.125rem);
}

.post-body p {
  margin-bottom: var(--spacing-lg, 1.5rem);
}

.post-body ul,
.post-body ol {
  margin-bottom: var(--spacing-lg, 1.5rem);
  padding-left: var(--spacing-xl, 2rem);
}

.post-body li {
  margin-bottom: var(--spacing-sm, 0.5rem);
}

.post-body a {
  color: var(--primary-color, #FF6B35);
  text-decoration: underline;
  transition: color var(--transition-normal, 0.3s ease);
}

.post-body a:hover {
  color: var(--primary-hover, #FF8551);
  text-decoration: none;
}

.post-body strong {
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-color, #333);
}

.post-body em {
  font-style: italic;
}

.post-body blockquote {
  margin: var(--spacing-xl, 2rem) 0;
  padding: var(--spacing-lg, 1.5rem) var(--spacing-xl, 2rem);
  border-left: 4px solid var(--primary-color, #FF6B35);
  background: var(--primary-light, #FFF4F0);
  border-radius: var(--border-radius-md, 0.5rem);
  font-style: italic;
  color: var(--text-secondary, #666);
}

.post-body code {
  background: var(--bg-secondary, #f5f5f5);
  padding: var(--spacing-xs, 0.25rem) var(--spacing-sm, 0.5rem);
  border-radius: var(--border-radius-sm, 0.25rem);
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
  color: var(--primary-color, #FF6B35);
}

.post-body pre {
  background: var(--bg-secondary, #f5f5f5);
  padding: var(--spacing-lg, 1.5rem);
  border-radius: var(--border-radius-md, 0.5rem);
  overflow-x: auto;
  margin-bottom: var(--spacing-lg, 1.5rem);
  border: 1px solid var(--border-light, #e9ecef);
}

.post-body pre code {
  background: none;
  padding: 0;
  color: var(--text-color, #333);
  font-size: var(--font-size-sm, 0.875rem);
}

.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-md, 0.5rem);
  margin: var(--spacing-xl, 2rem) 0;
  box-shadow: var(--shadow-md, 0 4px 8px rgba(0, 0, 0, 0.2));
}

.post-body hr {
  border: none;
  border-top: 2px solid var(--border-light, #e9ecef);
  margin: var(--spacing-2xl, 3rem) 0;
}

/* ============================================
   Post Footer
   ============================================ */

.post-footer {
  margin-top: var(--spacing-2xl, 3rem);
  padding-top: var(--spacing-xl, 2rem);
  border-top: 2px solid var(--border-light, #e9ecef);
}

/* Share Section */
.share-section {
  margin-bottom: var(--spacing-xl, 2rem);
  text-align: center;
}

.share-section h4 {
  font-size: var(--font-size-lg, 1.125rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-color, #333);
  margin-bottom: var(--spacing-md, 1rem);
  font-family: 'Montserrat', sans-serif;
}

.share-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md, 1rem);
  flex-wrap: wrap;
}

.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius-full, 50%);
  color: var(--text-white, #ffffff);
  text-decoration: none;
  transition: all var(--transition-normal, 0.3s ease);
  font-size: var(--font-size-lg, 1.125rem);
  box-shadow: var(--shadow-sm, 0 2px 4px rgba(0, 0, 0, 0.1));
}

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md, 0 4px 8px rgba(0, 0, 0, 0.2));
  text-decoration: none;
}

.share-btn.twitter {
  background: #1DA1F2;
}

.share-btn.linkedin {
  background: #0077B5;
}

.share-btn.facebook {
  background: #4267B2;
}

.share-btn.copy {
  background: var(--primary-color, #FF6B35);
}

.share-btn.copy:hover {
  background: var(--primary-hover, #FF8551);
}

/* Post Tags Footer */
.post-tags-footer {
  margin-bottom: var(--spacing-xl, 2rem);
}

.post-tags-footer h4 {
  font-size: var(--font-size-lg, 1.125rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-color, #333);
  margin-bottom: var(--spacing-md, 1rem);
  font-family: 'Montserrat', sans-serif;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs, 0.25rem);
}

/* Post Navigation */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg, 1.5rem);
  margin-bottom: var(--spacing-xl, 2rem);
}

.post-nav-link {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-lg, 1.5rem);
  background: var(--bg-secondary, #f5f5f5);
  border: 1px solid var(--border-light, #e9ecef);
  border-radius: var(--border-radius-md, 0.5rem);
  text-decoration: none;
  transition: all var(--transition-normal, 0.3s ease);
}

.post-nav-link:hover {
  background: var(--primary-light, #FFF4F0);
  border-color: var(--primary-color, #FF6B35);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm, 0 2px 4px rgba(0, 0, 0, 0.1));
}

.post-nav-link.prev {
  text-align: left;
}

.post-nav-link.next {
  text-align: right;
}

.nav-label {
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--text-muted, #999);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs, 0.25rem);
}

.nav-title {
  font-size: var(--font-size-base, 1rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--text-color, #333);
}

.post-nav-link:hover .nav-title {
  color: var(--primary-color, #FF6B35);
}

/* Back to Blog */
.back-to-blog {
  text-align: center;
}

.back-to-blog-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm, 0.5rem);
  padding: var(--spacing-md, 1rem) var(--spacing-xl, 2rem);
  background: var(--primary-color, #FF6B35);
  color: var(--text-white, #ffffff);
  text-decoration: none;
  border-radius: var(--border-radius-md, 0.5rem);
  font-size: var(--font-size-base, 1rem);
  font-weight: var(--font-weight-semibold, 600);
  transition: all var(--transition-normal, 0.3s ease);
  box-shadow: var(--shadow-sm, 0 2px 4px rgba(0, 0, 0, 0.1));
}

.back-to-blog-btn:hover {
  background: var(--primary-hover, #FF8551);
  color: var(--text-white, #ffffff);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md, 0 4px 8px rgba(0, 0, 0, 0.2));
}

/* ============================================
   Back to Top Button
   ============================================ */

.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl, 2rem);
  right: var(--spacing-xl, 2rem);
  width: 48px;
  height: 48px;
  background: var(--primary-color, #FF6B35);
  color: var(--text-white, #ffffff);
  border: none;
  border-radius: var(--border-radius-full, 50%);
  cursor: pointer;
  font-size: var(--font-size-lg, 1.125rem);
  box-shadow: var(--shadow-md, 0 4px 8px rgba(0, 0, 0, 0.2));
  transition: all var(--transition-normal, 0.3s ease);
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-hover, #FF8551);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg, 0 6px 16px rgba(0, 0, 0, 0.15));
}

.back-to-top:focus {
  outline: 2px solid var(--primary-color, #FF6B35);
  outline-offset: 2px;
}

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

@media (max-width: 768px) {
  .post-content {
    padding: 0 var(--spacing-md, 1rem) var(--spacing-xl, 2rem);
  }

  .post-header {
    margin-bottom: var(--spacing-xl, 2rem);
    padding-bottom: var(--spacing-lg, 1.5rem);
  }

  .post-meta {
    gap: var(--spacing-md, 1rem);
  }

  .post-body h1 {
    font-size: var(--font-size-2xl, 1.5rem);
  }

  .post-body h2 {
    font-size: var(--font-size-xl, 1.25rem);
  }

  .post-navigation {
    grid-template-columns: 1fr;
  }

  .post-nav-link.next {
    text-align: left;
  }

  .back-to-top {
    bottom: var(--spacing-md, 1rem);
    right: var(--spacing-md, 1rem);
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .breadcrumbs {
    padding: var(--spacing-md, 1rem) var(--spacing-md, 1rem) var(--spacing-sm, 0.5rem);
    font-size: var(--font-size-xs, 0.75rem);
  }

  .post-content {
    padding: 0 var(--spacing-sm, 0.5rem) var(--spacing-lg, 1.5rem);
  }

  .post-title {
    font-size: var(--font-size-2xl, 1.5rem);
  }

  .post-description {
    padding: var(--spacing-md, 1rem);
    padding-left: var(--spacing-xl, 2rem);
  }

  .quote-icon {
    left: var(--spacing-md, 1rem);
  }

  .share-buttons {
    gap: var(--spacing-sm, 0.5rem);
  }

  .share-btn {
    width: 44px;
    height: 44px;
    font-size: var(--font-size-base, 1rem);
  }
}

/* ============================================
   Accessibility
   ============================================ */

.post-body a:focus,
.share-btn:focus,
.back-to-blog-btn:focus {
  outline: 2px solid var(--primary-color, #FF6B35);
  outline-offset: 2px;
}

.post-nav-link:focus {
  outline: 2px solid var(--primary-color, #FF6B35);
  outline-offset: 2px;
}