/* Blog — editorial magazine layout (distinct from learning & events) */

.blog-page,
.blog-detail-page {
  --blog-accent: #3d5a80;
  --blog-accent-soft: color-mix(in srgb, var(--blog-accent) 14%, var(--color-bg));
  --blog-line: color-mix(in srgb, var(--color-border) 65%, transparent);
  --blog-warm: color-mix(in srgb, var(--theme-green) 8%, var(--blog-accent-soft));
}

#main-content:has(.blog-page),
#main-content:has(.blog-detail-page) {
  background:
    radial-gradient(ellipse 75% 45% at 12% 0%, rgba(61, 90, 128, 0.09), transparent 58%),
    radial-gradient(ellipse 55% 40% at 92% 6%, rgba(var(--rgb-green), 0.06), transparent 52%),
    linear-gradient(180deg, var(--blog-warm) 0%, var(--color-bg) 20%, var(--color-bg) 100%);
}

.blog-page,
.blog-detail-page {
  background: transparent;
}

/* —— List hero —— */
.blog-hero {
  padding: 0 0 1.25rem;
}

.blog-hero__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blog-accent);
  margin-bottom: 0.65rem;
}

.blog-hero__label::before {
  content: '';
  width: 2.25rem;
  height: 2px;
  background: var(--blog-accent);
  opacity: 0.55;
}

.blog-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4.2vw, 2.85rem);
  font-weight: 500;
  line-height: 1.12;
  margin: 0 0 0.7rem;
  max-width: 20ch;
}

.blog-hero__lead {
  margin: 0;
  max-width: 44ch;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--color-text-soft);
}

/* Category filter */
.blog-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1.75rem 0 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--blog-line);
}

.blog-filter__link {
  padding: 0.38rem 0.95rem;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--color-text-soft);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.blog-filter__link:hover {
  color: var(--color-text);
  border-color: var(--blog-line);
}

.blog-filter__link.is-active {
  color: var(--color-surface);
  background: var(--blog-accent);
  border-color: var(--blog-accent);
}

.blog-topic {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--blog-accent);
}

.blog-badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.blog-badge--featured {
  background: color-mix(in srgb, var(--theme-green) 18%, var(--color-surface));
  color: var(--theme-green-dark);
}

/* Featured spotlight */
.blog-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2.25rem);
  align-items: stretch;
  margin-bottom: clamp(2rem, 4vw, 2.75rem);
  padding-bottom: clamp(2rem, 4vw, 2.75rem);
  border-bottom: 1px solid var(--blog-line);
}

.blog-spotlight__media {
  display: block;
  border-radius: calc(var(--radius) + 4px);
  overflow: hidden;
  min-height: 240px;
  background: var(--color-surface);
  box-shadow: var(--color-shadow-lg);
}

.blog-spotlight__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  aspect-ratio: 16 / 9;
}

.blog-spotlight__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.82rem;
  color: var(--color-muted);
}

.blog-spotlight__body h2 {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  font-weight: 500;
  line-height: 1.2;
  margin: 0 0 0.65rem;
}

.blog-spotlight__body h2 a {
  color: var(--color-text);
  text-decoration: none;
}

.blog-spotlight__body h2 a:hover {
  color: var(--blog-accent);
}

.blog-spotlight__summary {
  margin: 0 0 0.85rem;
  color: var(--color-text-soft);
  line-height: 1.55;
}

.blog-spotlight__author {
  margin: 0 0 1.1rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-muted);
}

/* Post grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: clamp(1.25rem, 2.5vw, 1.75rem);
  margin-bottom: 2.5rem;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius) + 2px);
  overflow: hidden;
  box-shadow: var(--color-shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--color-shadow-lg);
}

.blog-card__media {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--blog-accent-soft);
}

.blog-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.blog-card:hover .blog-card__media img {
  transform: scale(1.03);
}

.blog-card__body {
  padding: 1.1rem 1.2rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  margin-bottom: 0.5rem;
  font-size: 0.78rem;
  color: var(--color-muted);
}

.blog-card__body h3 {
  margin: 0 0 0.45rem;
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.3;
}

.blog-card__body h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.blog-card__body h3 a:hover {
  color: var(--blog-accent);
}

.blog-card__body p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-text-soft);
  line-height: 1.5;
  flex: 1;
}

.blog-card__author {
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-muted);
}

.blog-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-muted);
}

.blog-pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* CTA band */
.blog-cta-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
  padding: clamp(1.5rem, 3vw, 2rem) clamp(1.25rem, 3vw, 2rem);
  background: linear-gradient(120deg, var(--blog-accent-soft), var(--color-surface));
  border: 1px solid var(--blog-line);
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--color-shadow);
}

.blog-cta-band h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  margin: 0 0 0.35rem;
}

.blog-cta-band p {
  margin: 0;
  color: var(--color-text-soft);
  max-width: 36ch;
}

/* —— Detail —— */
.blog-detail-page {
  padding-bottom: clamp(3rem, 6vw, 4.5rem);
}

.blog-detail-hero {
  padding: 0 0 1rem;
}

.blog-back {
  display: inline-block;
  margin-bottom: 1rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--blog-accent);
  text-decoration: none;
}

.blog-back:hover {
  text-decoration: underline;
}

.blog-detail-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.blog-detail-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 0.75rem;
  max-width: 22ch;
}

.blog-detail-hero__lead {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.55;
  color: var(--color-text-soft);
  max-width: 52ch;
}

.blog-detail-cover {
  margin: 0 auto 2rem;
  padding: 0;
  max-width: min(1100px, 100%);
}

.blog-detail-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: calc(var(--radius) + 6px);
  box-shadow: var(--color-shadow-lg);
  display: block;
}

.blog-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) min(280px, 30%);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}

.blog-prose {
  font-size: 1.05rem;
  line-height: 1.7;
}

.blog-detail-aside {
  position: sticky;
  top: calc(var(--header-height, 72px) + 1rem);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.blog-author-card,
.blog-share-card,
.blog-related {
  padding: 1.15rem 1.2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--color-shadow);
}

.blog-author-card__label,
.blog-share-card__label {
  margin: 0 0 0.75rem;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blog-accent);
}

.blog-author-card__row {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.blog-author-card__photo {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--blog-line);
}

.blog-author-card__photo--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.35rem;
  background: var(--blog-accent-soft);
  color: var(--blog-accent);
}

.blog-author-card h3 {
  margin: 0 0 0.15rem;
  font-size: 1rem;
}

.blog-author-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}

.blog-author-card h3 a:hover {
  color: var(--blog-accent);
}

.blog-author-card p {
  margin: 0;
  font-size: 0.82rem;
  color: var(--color-muted);
}

.blog-author-card__headline {
  margin: 0.75rem 0 0 !important;
  font-size: 0.85rem !important;
  line-height: 1.45;
  color: var(--color-text-soft) !important;
}

.blog-share-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
}

.blog-share-card__links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--blog-accent);
  text-decoration: none;
}

.blog-share-card__links a:hover {
  text-decoration: underline;
}

.blog-related h2 {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.blog-related__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.blog-related__list li + li {
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--blog-line);
}

.blog-related__list a {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-decoration: none;
  color: var(--color-text);
}

.blog-related__list a:hover .blog-related__title {
  color: var(--blog-accent);
}

.blog-related__title {
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.35;
  transition: color 0.15s;
}

.blog-related__meta {
  font-size: 0.78rem;
  color: var(--color-muted);
}

.blog-breadcrumb {
  margin-bottom: 1rem;
}

.blog-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.78rem;
  color: var(--color-muted);
}

.blog-breadcrumb li:not(:last-child)::after {
  content: '/';
  margin-inline-start: 0.5rem;
  opacity: 0.45;
}

.blog-breadcrumb a {
  color: var(--color-muted);
}

.blog-breadcrumb a:hover {
  color: var(--blog-accent);
}

.blog-breadcrumb [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

@media (max-width: 900px) {
  .blog-spotlight,
  .blog-detail-layout {
    grid-template-columns: 1fr;
  }

  .blog-detail-aside {
    position: static;
  }

  .blog-detail-hero h1 {
    max-width: none;
  }
}

@media (max-width: 600px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-cta-band {
    flex-direction: column;
    align-items: flex-start;
  }
}