/* ══════════════════════════════════════════════════════════════
   BLOG PAGE — Premium Styles
   Glassmorphic article cards, category tags, reading badges
   ══════════════════════════════════════════════════════════════ */

/* ─── BLOG HERO ─── */
.blog-hero {
  position: relative;
  min-height: 52vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-h) + 60px) 0 64px;
  overflow: hidden;
}
.blog-hero-visual {
  position: absolute;
  inset: 0;
}
.blog-hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  filter: grayscale(0.3);
}
.blog-hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6,10,16,.5) 0%, rgba(6,10,16,.7) 50%, rgba(6,10,16,.95) 100%),
    linear-gradient(90deg, rgba(6,10,16,.6) 0%, transparent 60%);
}
.blog-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,.03) 1px, transparent 1px);
  background-size: 80px 80px;
  animation: gridDrift 40s linear infinite;
}
.blog-hero-content {
  position: relative;
  z-index: 3;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}
.blog-hero-content .label {
  margin-bottom: 16px;
}
.blog-hero-title {
  font: 800 clamp(32px, 4.5vw, 56px)/1.08 var(--ff);
  color: var(--white);
  letter-spacing: -.03em;
  margin-bottom: 16px;
}
.blog-hero-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--cyan) 0%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.blog-hero-sub {
  font: 400 15px/1.75 var(--ff);
  color: var(--text);
  max-width: 540px;
  border-left: 2px solid rgba(56,189,248,.2);
  padding-left: 20px;
}

/* ─── BLOG SECTION ─── */
.blog-section {
  padding: 80px 0 120px;
  position: relative;
  background: var(--bg);
}

/* ─── FILTER BAR ─── */
.blog-filter-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}
.blog-filter-btn {
  font: 500 11px/1 var(--mono);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  background: transparent;
  border: 1px solid var(--border);
  padding: 10px 20px;
  border-radius: 3px;
  cursor: pointer;
  transition: all .3s;
}
.blog-filter-btn:hover,
.blog-filter-btn.active {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(56,189,248,.05);
}

/* ─── ARTICLES GRID ─── */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* ─── ARTICLE CARD ─── */
.article-card {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all .45s cubic-bezier(.25,.46,.45,.94);
  display: flex;
  flex-direction: column;
  cursor: default;
}
.article-card:hover {
  border-color: var(--border-h);
  transform: translateY(-8px);
  box-shadow:
    0 20px 60px rgba(0,0,0,.35),
    0 0 30px rgba(56,189,248,.04);
}

/* Card Image */
.article-img-wrap {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.article-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(.15);
  transition: transform .7s cubic-bezier(.25,.46,.45,.94), filter .5s;
}
.article-card:hover .article-img-wrap img {
  transform: scale(1.08);
  filter: grayscale(0);
}
.article-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(6,10,16,.65) 100%);
  pointer-events: none;
}

/* Category Tag */
.article-category {
  position: absolute;
  top: 14px;
  left: 14px;
  font: 600 9px/1 var(--mono);
  letter-spacing: 1.8px;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 3px;
  z-index: 2;
}
.article-category.cat-risk {
  color: var(--bg);
  background: var(--red);
}
.article-category.cat-ops {
  color: var(--bg);
  background: var(--amber);
}
.article-category.cat-tech {
  color: var(--bg);
  background: var(--cyan);
}
.article-category.cat-safety {
  color: var(--bg);
  background: var(--green);
}
.article-category.cat-strategy {
  color: var(--white);
  background: rgba(129,140,248,.85);
}
.article-category.cat-roi {
  color: var(--bg);
  background: #f472b6;
}

/* Card Body */
.article-body {
  padding: 24px 22px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-date {
  font: 400 11px/1 var(--mono);
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.article-title {
  font: 700 19px/1.3 var(--ff);
  color: var(--white);
  margin-bottom: 12px;
  letter-spacing: -.01em;
  transition: color .3s;
}
.article-card:hover .article-title {
  color: var(--cyan);
}
.article-excerpt {
  font: 400 13px/1.7 var(--ff);
  color: var(--text-dim);
  flex: 1;
  margin-bottom: 20px;
}

/* Read More Bar */
.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.article-read-time {
  font: 500 10px/1 var(--mono);
  color: var(--text-dim);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-read-time svg {
  width: 14px;
  height: 14px;
  stroke: var(--cyan);
  fill: none;
  stroke-width: 1.5;
}
.article-read-more {
  font: 600 10px/1 var(--mono);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--cyan);
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transform: translateX(-8px);
  transition: all .3s;
}
.article-card:hover .article-read-more {
  opacity: 1;
  transform: translateX(0);
}
.article-read-more svg {
  width: 12px;
  height: 12px;
  stroke: var(--cyan);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ─── FEATURED ARTICLE (First card spans 2 columns) ─── */
.article-card.featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
}
.article-card.featured .article-img-wrap {
  aspect-ratio: auto;
  min-height: 340px;
}
.article-card.featured .article-body {
  padding: 32px 28px 32px;
  justify-content: center;
}
.article-card.featured .article-title {
  font-size: 24px;
}
.article-card.featured .article-excerpt {
  font-size: 14px;
}

/* ─── NEWSLETTER CTA ─── */
.blog-newsletter {
  margin-top: 80px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 56px 48px;
  text-align: center;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}
.blog-newsletter::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(56,189,248,.03), transparent 60%);
  pointer-events: none;
}
.blog-newsletter-title {
  font: 700 clamp(22px, 3vw, 32px)/1.2 var(--ff);
  color: var(--white);
  margin-bottom: 12px;
  position: relative;
}
.blog-newsletter-desc {
  font: 400 14px/1.7 var(--ff);
  color: var(--text);
  max-width: 480px;
  margin: 0 auto 28px;
  position: relative;
}
.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}
.newsletter-input {
  flex: 1;
  font: 400 13px/1 var(--ff);
  color: var(--white);
  background: var(--bg-card2);
  border: 1px solid var(--border);
  padding: 14px 20px;
  border-radius: 4px;
  outline: none;
  transition: border-color .3s;
}
.newsletter-input::placeholder {
  color: var(--text-dim);
}
.newsletter-input:focus {
  border-color: var(--cyan);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-card.featured {
    grid-column: span 2;
  }
}
@media (max-width: 768px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .article-card.featured {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }
  .article-card.featured .article-img-wrap {
    min-height: 200px;
    aspect-ratio: 16/9;
  }
  .blog-hero {
    min-height: 40vh;
  }
  .blog-newsletter {
    padding: 36px 24px;
  }
  .newsletter-form {
    flex-direction: column;
  }
}
@media (max-width: 640px) {
  .blog-filter-bar {
    gap: 8px;
  }
  .blog-filter-btn {
    padding: 8px 14px;
    font-size: 10px;
  }
}