/* ==========================================================================
   PENIXIO BLOG STYLESHEET (blog.css)
   Pastel Studio Neo-Brutalist design tokens for the Penixio Blog & Journal.
   Inherits variables from themes.css and shared.css.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Blog Directory & Hero Section
   -------------------------------------------------------------------------- */
.blog-hero {
  background-color: var(--hero-bg, var(--bg-surface-alt));
  border-bottom: 3px solid var(--border-color);
  padding: clamp(2.5rem, 5vw, 4.5rem) 0 clamp(2rem, 4vw, 3.5rem);
  position: relative;
  overflow: hidden;
}

.blog-hero-content {
  max-width: 840px;
  position: relative;
  z-index: 5;
}

.blog-hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  margin-bottom: 0.85rem;
  line-height: 1.1;
}

.blog-hero .lede {
  color: var(--text-secondary);
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  margin-bottom: 1.75rem;
}

/* --------------------------------------------------------------------------
   2. Category Filter Navigation Bar
   -------------------------------------------------------------------------- */
.blog-filter-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.blog-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-pill);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.blog-filter-btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-md);
  background-color: var(--bg-surface-alt);
}

.blog-filter-btn.active {
  background-color: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: var(--button-shadow);
  border-color: var(--border-color);
}

.blog-filter-count {
  display: inline-block;
  font-size: 0.72rem;
  background: rgba(0, 0, 0, 0.08);
  padding: 0.1rem 0.45rem;
  border-radius: var(--border-radius-pill);
  font-family: var(--font-body);
  font-weight: 800;
}

.blog-filter-btn.active .blog-filter-count {
  background: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
}

/* --------------------------------------------------------------------------
   3. Featured Post Spotlight Card
   -------------------------------------------------------------------------- */
.featured-post-card {
  background-color: var(--bg-surface);
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  margin-bottom: 3.5rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.featured-post-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0px var(--border-color);
}

.featured-post-badge-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.featured-post-title {
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
  line-height: 1.18;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.featured-post-title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.featured-post-excerpt {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 780px;
}

.featured-post-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-muted);
  border-top: 1.5px solid var(--border-subtle);
  padding-top: 1.25rem;
}

/* --------------------------------------------------------------------------
   4. Post Grid & Standard Blog Cards
   -------------------------------------------------------------------------- */
.blog-posts-section {
  padding-top: 3rem;
  padding-bottom: 5rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1080px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.post-card {
  background-color: var(--bg-surface);
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.post-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.post-card.hidden {
  display: none !important;
}

.post-card-top {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.post-card-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
}

.post-card-title {
  font-size: 1.35rem;
  line-height: 1.25;
  margin-top: 0.25rem;
  margin-bottom: 0.5rem;
}

.post-card-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

.post-card-excerpt {
  font-size: 0.925rem;
  line-height: 1.55;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.post-card-bottom {
  margin-top: auto;
  border-top: 1.5px solid var(--border-subtle);
  padding-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-primary);
}

.post-card-read-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  text-decoration: none;
  font-family: var(--font-heading);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: transform 0.12s ease;
}

.post-card:hover .post-card-read-link {
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   5. Embedded Newsletter / Pack Download CTA Banner
   -------------------------------------------------------------------------- */
.blog-cta-box {
  background-color: var(--bg-surface-alt);
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.75rem, 4vw, 3rem);
  text-align: center;
  margin: 4rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.blog-cta-box h3 {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  margin-bottom: 0.65rem;
}

.blog-cta-box p {
  max-width: 600px;
  margin: 0 auto 1.5rem;
  font-size: 1rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   6. Article Reading View (Single Post Template)
   -------------------------------------------------------------------------- */
.article-page {
  padding-top: 2rem;
  padding-bottom: 5rem;
}

.article-container {
  max-width: 820px;
  margin: 0 auto;
}

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.article-breadcrumbs a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.12s ease;
}

.article-breadcrumbs a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.article-breadcrumbs span.sep {
  opacity: 0.5;
}

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 2px solid var(--border-color);
}

.article-header-badges {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.article-header h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.2rem);
  line-height: 1.15;
  margin-bottom: 1.15rem;
  color: var(--text-primary);
}

.article-lead {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  line-height: 1.55;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.article-byline {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 700;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-pill);
  border: 1.5px solid var(--border-color);
  background-color: var(--accent-primary);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
}

/* Table of Contents Box */
.article-toc {
  background-color: var(--bg-surface-alt);
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}

.article-toc-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 0.65rem;
  font-weight: 800;
}

.article-toc ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.article-toc a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.12s ease;
}

.article-toc a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

/* Article Body Typography */
.article-body {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text-primary);
}

.article-body p {
  margin-bottom: 1.5rem;
  font-weight: 500;
  line-height: 1.75;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  line-height: 1.25;
  margin-top: 2.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1.5px solid var(--border-subtle);
  color: var(--text-primary);
}

.article-body h3 {
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.article-body ul, 
.article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.6rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.article-body ul li {
  list-style-type: disc;
}

.article-body ol li {
  list-style-type: decimal;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 800;
}

/* --------------------------------------------------------------------------
   7. Callout Boxes & Pedagogical Widgets
   -------------------------------------------------------------------------- */
.callout-box {
  background-color: var(--bg-surface);
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  position: relative;
}

.callout-box-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.callout-box-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0;
}

.callout-box.callout-takeaway {
  border-left: 6px solid var(--accent-primary);
  background-color: #FAF6FC;
}

.callout-box.callout-takeaway .callout-box-title {
  color: var(--accent-primary);
}

.callout-box.callout-script {
  border-left: 6px solid #2E7D32;
  background-color: #F4FBF5;
}

.callout-box.callout-script .callout-box-title {
  color: #1B5E20;
}

.callout-box.callout-misconception {
  border-left: 6px solid #D6432F;
  background-color: #FFF6F5;
}

.callout-box.callout-misconception .callout-box-title {
  color: #B7331F;
}

/* Socratic Dialogue Block */
.socratic-dialogue {
  background-color: var(--bg-surface);
  border: 1.5px dashed var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.dialogue-turn {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.95rem;
}

.dialogue-speaker {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-primary);
}

.dialogue-speaker.child {
  color: var(--text-muted);
}

.dialogue-text {
  color: var(--text-primary);
  font-style: italic;
}

/* Comparison Table (Drill vs Depth) */
.comparison-table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  background-color: var(--bg-surface);
  font-size: 0.925rem;
}

.comparison-table th {
  background-color: var(--bg-surface-alt);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.85rem 1.15rem;
  border-bottom: var(--card-border-width) solid var(--border-color);
}

.comparison-table td {
  padding: 0.85rem 1.15rem;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: top;
  line-height: 1.5;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background-color: rgba(255, 240, 193, 0.25);
}

/* --------------------------------------------------------------------------
   8. In-Article CTA & Author Bio Card
   -------------------------------------------------------------------------- */
.article-end-cta {
  background-color: var(--hero-bg, var(--bg-surface-alt));
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
  text-align: center;
  margin: 3.5rem 0;
}

.author-bio-card {
  background-color: var(--bg-surface);
  border: var(--card-border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin: 2.5rem 0;
}

.author-bio-info h4 {
  margin-bottom: 0.25rem;
  font-size: 1.1rem;
}

.author-bio-info p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   9. Related Articles Section
   -------------------------------------------------------------------------- */
.related-articles-section {
  border-top: 2px solid var(--border-color);
  padding-top: 2.5rem;
  margin-top: 3.5rem;
}

.related-articles-section h3 {
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .featured-post-card {
    padding: 1.25rem;
  }
  .blog-hero {
    padding-top: 2rem !important;
    padding-bottom: 2rem !important;
  }
  .callout-box {
    padding: 1.15rem;
  }
  .author-bio-card {
    flex-direction: column;
    text-align: center;
  }
}