/* ============================================================
   SAVADUB INSTITUTE — TECHNICAL PAPERS & JOURNAL STYLESHEET
   Theme: Clean High-Contrast Light Academic Publication
   ============================================================ */

/* ── BLOG HERO ── */
.blog-hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 48px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border-bottom: 1px solid var(--inst-border, #e2e8f0);
}

.blog-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(102, 169, 191, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 169, 191, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 0;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 999px;
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  font-size: 0.78rem;
  font-weight: 700;
  color: #1d4ed8;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-title {
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--inst-navy, #081065);
  letter-spacing: -0.025em;
  margin-top: 12px;
}

.section-subtitle {
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--inst-text-body, #334155);
  max-width: 680px;
}

/* ── PAGE WRAPPER ── */
.blog-wrap {
  padding-top: 48px;
  padding-bottom: 80px;
}

/* ── CATEGORY CHIP ── */
.blog-category-chip {
  display: inline-block;
  font-family: var(--inst-font-mono, monospace);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--inst-red, #DD3333);
  background: var(--inst-red-light, #fef2f2);
  border: 1px solid var(--inst-red-border, #fecaca);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  font-weight: 700;
}

.blog-category-chip--lg {
  font-size: 0.76rem;
  padding: 6px 16px;
  margin-bottom: 16px;
}

/* ── FEATURED POST CARD ── */
.featured-post {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 1px solid var(--inst-border, #e2e8f0);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 16px -2px rgba(15, 23, 42, 0.05);
  transition: all 0.25s ease;
}

@media (min-width: 992px) {
  .featured-post {
    flex-direction: row;
    align-items: stretch;
  }
  .featured-post__media {
    width: 45%;
    min-height: 320px;
  }
  .featured-post__body {
    width: 55%;
    padding: 40px;
  }
}

.featured-post:hover {
  border-color: #cbd5e1;
  box-shadow: 0 16px 36px -4px rgba(8, 16, 101, 0.08);
}

.featured-post__media {
  position: relative;
  overflow: hidden;
  background: #f1f5f9;
  display: block;
}

.featured-post__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.featured-post:hover .featured-post__media img {
  transform: scale(1.03);
}

.featured-post__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: var(--inst-navy, #081065);
  color: #ffffff;
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
}

.featured-post__body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-post__title {
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--inst-navy, #081065);
  line-height: 1.25;
  margin-bottom: 12px;
  transition: color 0.2s ease;
}

.featured-post__title:hover {
  color: var(--inst-red, #DD3333);
}

.featured-post__excerpt {
  color: var(--inst-text-body, #334155);
  font-size: 0.96rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

/* ── REGULAR BLOG CARD ── */
.blog-card {
  background: #ffffff;
  border: 1px solid var(--inst-border, #e2e8f0);
  border-radius: 14px;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 12px -2px rgba(15, 23, 42, 0.04);
  transition: all 0.25s ease;
}

.blog-card:hover {
  border-color: #cbd5e1;
  transform: translateY(-3px);
  box-shadow: 0 16px 36px -4px rgba(8, 16, 101, 0.08);
}

.blog-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #f1f5f9;
  overflow: hidden;
  display: block;
}

.blog-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.blog-card:hover .blog-card__media img {
  transform: scale(1.04);
}

.blog-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card__title {
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--inst-navy, #081065);
  line-height: 1.35;
  margin-bottom: 10px;
}

.blog-card__title a {
  color: inherit;
  text-decoration: none;
}

.blog-card__title a:hover {
  color: var(--inst-red, #DD3333);
}

.blog-card__excerpt {
  color: var(--inst-text-body, #334155);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--inst-text-muted, #64748b);
}

.post-meta__dot {
  opacity: 0.5;
}

/* ── READING PROGRESS & DETAIL ARTICLE ── */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--inst-red, #DD3333);
  z-index: 1100;
  width: 0%;
  transition: width 0.1s linear;
}

.article-header {
  padding: 56px 0 36px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border-bottom: 1px solid var(--inst-border, #e2e8f0);
}

.article-title {
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  color: var(--inst-navy, #081065);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 16px 0 20px;
}

.article-lead {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--inst-text-body, #334155);
}

.article-prose {
  font-family: var(--inst-font-body, 'Inter', sans-serif);
  font-size: 1.05rem;
  line-height: 1.8;
  color: #0f172a;
}

.article-prose h2, .article-prose h3, .article-prose h4 {
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  color: var(--inst-navy, #081065);
  margin-top: 40px;
  margin-bottom: 16px;
  font-weight: 800;
}

.article-prose p {
  margin-bottom: 24px;
}

.article-prose pre {
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 18px 20px;
  font-family: var(--inst-font-mono, monospace);
  font-size: 0.9rem;
  overflow-x: auto;
  color: #0f172a;
}

.article-prose blockquote {
  border-left: 4px solid var(--inst-red, #DD3333);
  padding-left: 20px;
  margin: 28px 0;
  font-style: italic;
  color: #334155;
}

/* ── BLOG PAGINATION ── */
.blog-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 56px;
  margin-bottom: 24px;
}

.blog-pagination .page-link {
  font-family: var(--inst-font-heading, 'Outfit', sans-serif);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--inst-navy, #081065) !important;
  background: #ffffff !important;
  border: 1px solid var(--inst-border, #e2e8f0) !important;
  padding: 9px 18px;
  border-radius: var(--inst-radius-sm, 8px) !important;
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 4px rgba(15, 23, 42, 0.04);
  transition: all 0.2s ease;
}

.blog-pagination .page-link:hover {
  color: var(--inst-navy, #081065) !important;
  border-color: var(--inst-cyan, #66A9BF) !important;
  background: #f8fafc !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(8, 16, 101, 0.08);
}

.blog-pagination .page-link--disabled {
  color: #94a3b8 !important;
  background: #f8fafc !important;
  border-color: #e2e8f0 !important;
  opacity: 0.65;
  cursor: not-allowed !important;
  pointer-events: none;
  box-shadow: none !important;
  transform: none !important;
}

.blog-pagination .page-link__numbers {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.blog-pagination .page-link--num {
  min-width: 42px;
  height: 42px;
  padding: 0 14px;
  justify-content: center;
}

.blog-pagination .page-link--num.active {
  color: #ffffff !important;
  background: var(--inst-red, #DD3333) !important;
  border-color: var(--inst-red, #DD3333) !important;
  box-shadow: 0 4px 14px rgba(221, 51, 51, 0.3) !important;
}

.blog-pagination .page-link--arrow {
  height: 42px;
}

@media (max-width: 575.98px) {
  .blog-pagination {
    gap: 6px;
  }
  .blog-pagination .page-link {
    padding: 7px 12px;
    font-size: 0.85rem;
  }
  .blog-pagination .page-link--num {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
  }
  .blog-pagination .page-link--arrow {
    height: 36px;
  }
}