/* ================================================================
   OPTIFLOWS — BLOG.CSS
   Magazine-style blog grid. Asymmetric, editorial, teal system.
   ================================================================ */

/* ======================== ACTIVE NAV ======================== */
.Header-navLink--active {
  color: var(--mid-teal);
}

/* ======================== BLOG HERO ======================== */
.BlogHero {
  padding: 120px var(--container-padding) 0;
}

.BlogHero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-bottom: 60px;
  border-bottom: 1px solid var(--light-grey);
}

.BlogHero-title {
  font-size: var(--font-size-xxxx-large);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 600;
  color: var(--dark-teal);
  max-width: 18ch;
  margin-bottom: 20px;
}

.BlogHero-sub {
  font-family: var(--font-mono);
  font-size: var(--font-size-xx-small);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--mid-grey);
  line-height: 1.5;
  max-width: 64ch;
  font-weight: 400;
}

/* ======================== FILTER BAR ======================== */
.BlogFilter {
  padding: 0 var(--container-padding);
  position: sticky;
  top: 70px;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--light-grey);
}

.BlogFilter-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.BlogFilter-categories {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.BlogFilter-categories::-webkit-scrollbar {
  display: none;
}

.BlogFilter-tag {
  font-family: var(--font-mono);
  font-size: var(--font-size-label);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid var(--light-grey);
  background: transparent;
  color: var(--mid-grey);
  cursor: pointer;
  transition: all 0.2s var(--easeInOut);
  white-space: nowrap;
  font-weight: 400;
}

.BlogFilter-tag:hover {
  border-color: var(--mid-teal);
  color: var(--dark-teal);
}

.BlogFilter-tag.active {
  background: var(--dark-teal);
  border-color: var(--dark-teal);
  color: var(--electric-teal);
}

.BlogFilter-count {
  font-family: var(--font-mono);
  font-size: var(--font-size-label);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--mid-grey);
  white-space: nowrap;
  font-weight: 400;
}

/* ======================== BLOG GRID ======================== */
.BlogGrid-wrap {
  padding: 40px var(--container-padding) 80px;
}

.BlogGrid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 15px;
}

/* ======================== POST CARD ======================== */
.PostCard {
  border-radius: var(--border-radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  cursor: pointer;
  transition: transform 0.3s var(--easeInOut), box-shadow 0.3s var(--easeInOut);
  text-decoration: none;
  color: inherit;
  min-height: 280px;
}

.PostCard:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(5, 61, 61, 0.08);
}

/* === Featured cards — large, span 7 and 5 cols === */
.PostCard--featured-0 {
  grid-column: span 7;
  background: linear-gradient(135deg, var(--dark-teal), #0A6E6E);
  color: var(--white);
  min-height: 380px;
  padding: 40px;
}

.PostCard--featured-0 .PostCard-category { color: var(--electric-teal); }
.PostCard--featured-0 .PostCard-title { color: var(--white); }
.PostCard--featured-0 .PostCard-excerpt { color: rgba(255, 255, 255, 0.6); }
.PostCard--featured-0 .PostCard-meta { color: rgba(255, 255, 255, 0.4); }
.PostCard--featured-0 .PostCard-arrow { color: var(--electric-teal); }

.PostCard--featured-1 {
  grid-column: span 5;
  background: var(--light-interface-teal);
  min-height: 380px;
  padding: 40px;
}

/* === Regular cards — alternating widths for asymmetry === */
.PostCard--regular {
  background: var(--very-light-grey);
}

/* Row patterns for visual interest */
.PostCard--row-0 { grid-column: span 4; }
.PostCard--row-1 { grid-column: span 4; }
.PostCard--row-2 { grid-column: span 4; }

/* Alternate row: asymmetric 5-7 or 7-5 */
.PostCard--row-3 { grid-column: span 5; }
.PostCard--row-4 { grid-column: span 7; }

.PostCard--row-5 { grid-column: span 7; }
.PostCard--row-6 { grid-column: span 5; }

/* Accent card — every 5th regular post */
.PostCard--accent {
  background: var(--electric-teal);
}

.PostCard--accent .PostCard-category { color: var(--dark-teal); }
.PostCard--accent .PostCard-title { color: var(--dark-teal); }
.PostCard--accent .PostCard-excerpt { color: var(--mid-teal); }
.PostCard--accent .PostCard-meta { color: var(--mid-teal); }

/* === Card Inner Elements === */
.PostCard-top {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.PostCard-category {
  font-family: var(--font-mono);
  font-size: var(--font-size-label);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--mid-teal);
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 8px;
}

.PostCard-category::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: currentColor;
  flex-shrink: 0;
}

.PostCard-title {
  font-family: var(--font-primary);
  font-size: var(--font-size-large);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--dark-teal);
}

.PostCard--featured-0 .PostCard-title,
.PostCard--featured-1 .PostCard-title {
  font-size: var(--font-size-x-large);
}

.PostCard-excerpt {
  font-size: var(--font-size-small);
  color: var(--mid-grey);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.PostCard-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.PostCard-meta {
  font-family: var(--font-mono);
  font-size: var(--font-size-label);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--mid-grey);
  font-weight: 400;
}

.PostCard-arrow {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--mid-teal);
  transition: transform 0.3s var(--easeInOut);
}

.PostCard:hover .PostCard-arrow {
  transform: translate(4px, -4px);
}

/* ======================== EMPTY STATE ======================== */
.BlogEmpty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
}

.BlogEmpty-icon {
  width: 48px;
  height: 48px;
  color: var(--light-grey);
  margin: 0 auto 16px;
}

.BlogEmpty-text {
  font-family: var(--font-mono);
  font-size: var(--font-size-xx-small);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--mid-grey);
  font-weight: 400;
}

/* ======================== ANIMATE IN ======================== */
.PostCard {
  opacity: 0;
  transform: translateY(24px);
  animation: cardIn 0.5s var(--easeInOut) forwards;
}

@keyframes cardIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stagger delay applied via JS inline style */

/* ======================== RESPONSIVE ======================== */
@media (max-width: 1024px) {
  .BlogHero {
    padding-top: 100px;
  }

  .BlogHero-title {
    font-size: var(--font-size-xx-large);
  }

  .BlogGrid {
    grid-template-columns: repeat(6, 1fr);
  }

  .PostCard--featured-0,
  .PostCard--featured-1 {
    grid-column: span 6;
    min-height: 300px;
  }

  .PostCard--row-0,
  .PostCard--row-1,
  .PostCard--row-2 {
    grid-column: span 3;
  }

  .PostCard--row-3,
  .PostCard--row-4,
  .PostCard--row-5,
  .PostCard--row-6 {
    grid-column: span 3;
  }
}

@media (max-width: 768px) {
  .BlogHero {
    padding-top: 90px;
  }

  .BlogFilter {
    top: 56px;
  }

  .BlogFilter-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .BlogGrid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .PostCard--featured-0,
  .PostCard--featured-1,
  .PostCard--row-0,
  .PostCard--row-1,
  .PostCard--row-2,
  .PostCard--row-3,
  .PostCard--row-4,
  .PostCard--row-5,
  .PostCard--row-6 {
    grid-column: span 1;
    min-height: auto;
  }

  .PostCard {
    min-height: auto;
    padding: 24px;
  }

  .PostCard--featured-0,
  .PostCard--featured-1 {
    padding: 28px;
    min-height: 260px;
  }
}