/* 
  VULCAN DESIGN SYSTEM - EDITORIAL BLOG COMPONENTS
  Optimized for Long-form Content Readability & High Visual Comfort
*/

/* Reading Progress Bar */
.v-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(to right, var(--s-color-primary), var(--s-color-secondary));
  box-shadow: 0 0 10px rgba(0, 238, 129, 0.5);
  z-index: 1000;
  width: 0%;
  transition: width 0.1s ease-out;
}

/* Main Container & Column Width */
.v-blog-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 2rem 1.5rem 6rem;
}

/* Article Shell Card */
.v-article-card {
  background: rgba(13, 15, 20, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--p-radius-xl);
  padding: 3rem;
  backdrop-filter: blur(16px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

@media (max-width: 768px) {
  .v-article-card {
    padding: 1.5rem 1.25rem;
    border-radius: var(--p-radius-lg);
  }
}

/* Article Header */
.v-blog-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.v-blog-header__title {
  font-family: var(--p-font-display);
  font-size: clamp(1.85rem, 5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #FFFFFF;
  margin-bottom: 1.25rem;
  text-transform: none;
}

.v-blog-header__summary {
  font-family: var(--p-font-body);
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--p-color-gray-300);
  margin-bottom: 1.5rem;
}

.v-blog-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--p-font-mono);
  font-size: 0.8rem;
  color: var(--s-color-text-secondary);
}

.v-blog-meta__item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* Tag Badges */
.v-tag {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  font-family: var(--p-font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--p-radius-sm);
  background: rgba(0, 238, 129, 0.08);
  color: var(--s-color-primary);
  border: 1px solid rgba(0, 238, 129, 0.25);
  text-decoration: none;
  transition: all 0.2s ease;
}

.v-tag:hover {
  background: rgba(0, 238, 129, 0.2);
  border-color: var(--s-color-primary);
  box-shadow: var(--s-glow-primary);
}

/* --- OPTIMIZED ARTICLE BODY TYPOGRAPHY --- */
.v-article-body {
  color: #D1D5DB; /* Softer slate white for zero eye strain */
  font-family: var(--p-font-body);
  font-size: 1.125rem; /* 18px optimal body size */
  line-height: 1.85; /* Generous breathing line height */
  letter-spacing: -0.003em;
  max-width: 68ch; /* 68 characters max line length for optimal reading */
  margin: 0 auto;
}

/* Headings Hierarchy */
.v-article-body h2 {
  font-family: var(--p-font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-top: 3.5rem;
  margin-bottom: 1.25rem;
  line-height: 1.3;
  text-transform: none;
  border-left: 4px solid var(--s-color-primary);
  padding-left: 1rem;
}

.v-article-body h3 {
  font-family: var(--p-font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--s-color-secondary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.35;
  text-transform: none;
}

.v-article-body h4 {
  font-family: var(--p-font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  text-transform: none;
}

/* Paragraphs & Text Elements */
.v-article-body p {
  margin-bottom: 1.75rem;
}

.v-article-body strong {
  color: #FFFFFF;
  font-weight: 600;
}

.v-article-body em {
  color: var(--p-color-gray-200);
}

.v-article-body a {
  color: var(--s-color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  transition: all 0.2s ease;
}

.v-article-body a:hover {
  color: #FFFFFF;
  text-shadow: 0 0 8px rgba(0, 238, 129, 0.4);
}

/* Lists */
.v-article-body ul,
.v-article-body ol {
  margin-bottom: 1.75rem;
  padding-left: 1.5rem;
}

.v-article-body li {
  margin-bottom: 0.65rem;
  padding-left: 0.25rem;
}

.v-article-body ul li::marker {
  color: var(--s-color-primary);
}

.v-article-body ol li::marker {
  color: var(--s-color-primary);
  font-family: var(--p-font-mono);
  font-weight: 700;
}

/* Blockquotes & Callouts */
.v-article-body blockquote {
  position: relative;
  background: rgba(0, 238, 129, 0.04);
  border: 1px solid rgba(0, 238, 129, 0.15);
  border-left: 4px solid var(--s-color-primary);
  margin: 2.25rem 0;
  padding: 1.5rem 1.75rem;
  border-radius: 0 var(--p-radius-lg) var(--p-radius-lg) 0;
  font-size: 1.1rem;
  font-style: italic;
  color: #E2E8F0;
  line-height: 1.75;
}

.v-article-body blockquote p:last-child {
  margin-bottom: 0;
}

/* Code Blocks & Inline Code */
.v-article-body code {
  font-family: var(--p-font-mono);
  font-size: 0.88rem;
  background: rgba(0, 238, 129, 0.08);
  color: var(--s-color-primary);
  padding: 0.2rem 0.45rem;
  border-radius: var(--p-radius-sm);
  border: 1px solid rgba(0, 238, 129, 0.2);
}

.v-article-body pre {
  background: #07080C;
  border: 1px solid rgba(0, 238, 129, 0.2);
  border-radius: var(--p-radius-md);
  padding: 1.5rem;
  overflow-x: auto;
  margin: 2rem 0;
  box-shadow: inset 0 2px 10px rgba(0,0,0,0.5);
}

.v-article-body pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: #E2E8F0;
  font-size: 0.92rem;
  line-height: 1.65;
}

/* Tables */
.v-article-body table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2.25rem 0;
  border-radius: var(--p-radius-md);
  border: 1px solid var(--s-glass-border);
  overflow: hidden;
}

.v-article-body th,
.v-article-body td {
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--s-glass-border);
  font-size: 0.95rem;
}

.v-article-body th {
  background: rgba(255, 255, 255, 0.06);
  font-family: var(--p-font-mono);
  color: var(--s-color-primary);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.v-article-body tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.v-article-body tr:last-child td {
  border-bottom: none;
}

/* Horizontal Divider */
.v-article-body hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.15), transparent);
  margin: 3.5rem 0;
}

/* Mermaid Diagrams */
.v-article-body .mermaid {
  background: #07080C;
  border: 1px solid rgba(0, 238, 129, 0.25);
  border-radius: var(--p-radius-md);
  padding: 1.75rem 1rem;
  margin: 2.25rem 0;
  display: flex;
  justify-content: center;
  overflow-x: auto;
}

/* Images & Media */
.v-article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--p-radius-md);
  border: 1px solid var(--s-glass-border);
  margin: 2rem 0;
  display: block;
}

.v-article-body figure {
  margin: 2.25rem 0;
  text-align: center;
}

.v-article-body figure img {
  margin: 0 auto 0.75rem auto;
}

.v-article-body figcaption {
  font-family: var(--p-font-mono);
  font-size: 0.8rem;
  color: var(--s-color-text-secondary);
}

/* Responsive YouTube Video Container (16:9 Aspect Ratio) */
.v-video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  background: #000;
  border-radius: var(--p-radius-md);
  border: 1px solid var(--s-glass-border);
  margin: 2.25rem 0;
}

.v-video-container iframe,
.v-video-container object,
.v-video-container embed {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Post Cards Grid (Blog Index) */
.v-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.v-post-card {
  background: var(--s-color-surface-container);
  border: 1px solid var(--s-glass-border);
  border-radius: var(--p-radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.v-post-card:hover {
  transform: translateY(-4px);
  border-color: var(--s-color-primary);
  box-shadow: 0 10px 30px rgba(0, 238, 129, 0.15);
}

.v-post-card__title {
  font-family: var(--p-font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0.75rem 0;
  color: var(--s-color-text-primary);
  line-height: 1.3;
  text-transform: none;
}

.v-post-card__excerpt {
  color: var(--s-color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* Social Share Section */
.v-share-section {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.v-share-title {
  font-family: var(--p-font-mono);
  font-size: var(--p-font-size-xs);
  color: var(--s-color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.v-share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.v-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.1rem;
  border-radius: var(--p-radius-sm);
  background: var(--s-color-surface-container);
  border: 1px solid var(--s-glass-border);
  color: var(--s-color-text-primary);
  font-family: var(--p-font-mono);
  font-size: 0.78rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.v-share-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--s-color-primary);
  color: var(--s-color-primary);
  transform: translateY(-2px);
}

.v-share-btn--linkedin:hover {
  border-color: #0A66C2;
  color: #0A66C2;
}

.v-share-btn--whatsapp:hover {
  border-color: #25D366;
  color: #25D366;
}

.v-share-btn--twitter:hover {
  border-color: #1DA1F2;
  color: #1DA1F2;
}