/* ===================================================================
   SECTION: Blog — Hero, filters, card grid, post view, typography
   =================================================================== */

/* --- Blog Hero --- */
.blog-hero {
  padding: calc(80px + var(--space-xl)) var(--space-lg) var(--space-lg);
  max-width: var(--container-max);
  margin: 0 auto;
}

.blog-hero-content {
  max-width: 600px;
}

.blog-hero-content .heading-lg {
  margin-bottom: var(--space-sm);
}

.blog-hero-content p {
  color: var(--color-text-dim);
  font-size: 1.05rem;
}

/* --- Category Filters --- */
.blog-filters {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-md);
}

.blog-filters-inner {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.blog-filter-btn {
  padding: 0.4rem 1rem;
  border: 1px solid var(--color-border);
  background: transparent;
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 4px) 0, 100% 4px, 100% 100%, 4px 100%, 0 calc(100% - 4px));
  transition: color 0.25s ease,
              border-color 0.25s ease,
              background 0.3s ease,
              box-shadow 0.3s ease;
}

.blog-filter-btn:hover {
  border-color: var(--color-cyan);
  color: var(--color-cyan);
  box-shadow: 0 0 10px var(--color-cyan-glow);
}

.blog-filter-btn.active {
  background: var(--color-cyan);
  color: var(--color-bg);
  border-color: var(--color-cyan);
  box-shadow: 0 0 15px var(--color-cyan-glow);
}

/* --- Blog Grid --- */
.blog-listing {
  padding-top: 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-md);
}

/* --- Blog Card --- */
.blog-card {
  position: relative;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: all var(--ease-smooth);
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

/* Gradient top border */
.blog-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent-horizontal);
  opacity: 0;
  transition: opacity var(--ease-base);
  z-index: 2;
}

/* Scanline sweep on hover */
.blog-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, var(--color-cyan-glow) 50%, transparent 60%);
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}

.blog-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 240, 255, 0.08), 0 0 1px var(--color-cyan-dark);
}

.blog-card:hover::before {
  opacity: 1;
}

.blog-card:hover::after {
  opacity: 1;
  animation: scanlineSweep 1.5s ease-in-out;
}

/* Card image */
.blog-card-image {
  width: 100%;
  overflow: hidden;
}

.blog-card-image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform var(--ease-slow);
}

.blog-card:hover .blog-card-image img {
  transform: scale(1.05);
}

.blog-card-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--color-bg-card);
}

/* Card body */
.blog-card-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.blog-card-category {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-purple);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--color-border-purple);
}

.blog-card-date {
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--color-text-dim);
  letter-spacing: 0.05em;
}

.blog-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  letter-spacing: 0.03em;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.blog-card-excerpt {
  font-size: var(--fs-small);
  color: var(--color-text-dim);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
  flex: 1;
}

.blog-card-read-more {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  color: var(--color-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color var(--ease-base);
}

.blog-card:hover .blog-card-read-more {
  color: var(--color-cyan-light);
}

/* --- Blog Empty State --- */
.blog-empty {
  text-align: center;
  padding: var(--space-xl) 0;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: var(--fs-small);
  letter-spacing: 0.05em;
}


/* ===================================================================
   BLOG POST VIEW
   =================================================================== */

.blog-post {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: calc(80px + var(--space-lg)) var(--space-lg) var(--space-xl);
}

/* Cover image */
.blog-post-cover {
  position: relative;
  width: 100%;
  max-height: 450px;
  overflow: hidden;
  margin-bottom: var(--space-lg);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.blog-post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-post-cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--color-bg) 0%, transparent 40%);
}

/* Post header */
.blog-post-header-inner {
  margin-bottom: var(--space-lg);
}

.blog-post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.blog-post-author {
  font-family: var(--font-mono);
  font-size: var(--fs-tiny);
  color: var(--color-text-dim);
  letter-spacing: 0.05em;
}

.blog-post-title {
  margin-bottom: var(--space-sm);
}

/* Post body — markdown typography */
.blog-post-body {
  max-width: 760px;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text);
}

.blog-post-body h2 {
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  color: var(--color-text);
  margin: var(--space-lg) 0 var(--space-sm);
  letter-spacing: 0.03em;
}

.blog-post-body h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-cyan);
  margin: var(--space-md) 0 var(--space-xs);
}

.blog-post-body p {
  margin-bottom: var(--space-md);
  color: var(--color-text-dim);
}

.blog-post-body strong {
  color: var(--color-text);
  font-weight: 600;
}

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

.blog-post-body a {
  color: var(--color-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--ease-base);
}

.blog-post-body a:hover {
  color: var(--color-purple);
}

.blog-post-body img {
  width: 100%;
  border: 1px solid var(--color-border);
  margin: var(--space-md) 0;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.blog-post-body blockquote {
  border-left: 3px solid var(--color-cyan);
  padding-left: var(--space-md);
  margin: var(--space-md) 0;
  color: var(--color-text-dim);
  font-style: italic;
}

.blog-post-body code {
  font-family: var(--font-mono);
  background: var(--color-bg-elevated);
  padding: 0.15em 0.4em;
  font-size: 0.9em;
  border: 1px solid var(--color-border);
}

.blog-post-body pre {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  overflow-x: auto;
  margin: var(--space-md) 0;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.blog-post-body pre code {
  background: none;
  border: none;
  padding: 0;
}

.blog-post-body ul,
.blog-post-body ol {
  padding-left: var(--space-md);
  margin-bottom: var(--space-md);
}

.blog-post-body li {
  margin-bottom: var(--space-xs);
  color: var(--color-text-dim);
}

.blog-post-body li::marker {
  color: var(--color-cyan);
}

.blog-post-body hr {
  border: none;
  height: 1px;
  background: var(--gradient-accent-horizontal);
  margin: var(--space-lg) 0;
  opacity: 0.4;
}

/* Post footer */
.blog-post-footer {
  max-width: 760px;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-xl);
}

.blog-back-btn {
  text-decoration: none;
}