/* ===== Accessibility: skip link (visually hidden until keyboard-focused) ===== */
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus,
.skip-link:focus-visible {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  width: auto;
  height: auto;
  padding: 0.5rem 1rem;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  z-index: 9999;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
  text-decoration: none;
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== Blog list page ===== */

.blog-hero {
  padding: 4rem 0 2.5rem;
}

.blog-hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  color: var(--color-text);
}

.blog-hero__lead {
  max-width: 48rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.blog-featured {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 2rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px -24px rgba(15, 23, 42, 0.25);
}

.blog-featured__media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--color-primary-soft);
}

.blog-featured__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.blog-featured__badge {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.05em;
}

.blog-featured__body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.85rem;
}

.blog-featured__meta,
.blog-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.blog-featured__title {
  margin: 0;
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  line-height: 1.35;
  color: var(--color-text);
}

.blog-featured__summary {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-featured__cta {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.15rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-weight: 500;
  transition: background var(--transition-base);
}

.blog-featured__cta:hover,
.blog-featured__cta:focus-visible {
  background: var(--color-primary-hover);
}

/* ===== Category filter ===== */
.blog-filter {
  margin: 2.5rem 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.blog-filter__label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-right: 0.25rem;
}

.blog-filter__chip {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
  font-family: inherit;
}

.blog-filter__chip:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

.blog-filter__chip.is-active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ===== Article grid ===== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  gap: 1.5rem;
  margin: 1rem 0 3rem;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.blog-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px -22px rgba(15, 23, 42, 0.28);
}

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

.blog-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.blog-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.15rem 1.2rem 1.3rem;
  flex: 1;
}

.blog-card__title {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--color-text);
}

.blog-card__summary {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__category {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-pill);
  align-self: flex-start;
  letter-spacing: 0.03em;
}

.blog-card__pending {
  opacity: 0.55;
  cursor: not-allowed;
}

.blog-card__pending-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ===== Empty state ===== */
.blog-empty {
  text-align: center;
  padding: 3rem 1rem;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  background: var(--color-surface-glass);
}

.blog-empty h3 {
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

/* ===== Article page ===== */
.blog-article {
  max-width: 52rem;
  margin: 0 auto;
  padding: 2.5rem 1rem 3rem;
}

.blog-breadcrumb {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.blog-breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

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

.blog-article__header {
  margin-bottom: 1.5rem;
}

.blog-article__category {
  display: inline-block;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}

.blog-article__title {
  margin: 0 0 1rem;
  font-size: clamp(1.6rem, 3.5vw, 2.3rem);
  line-height: 1.3;
  color: var(--color-text);
}

.blog-article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.blog-article__cover {
  margin: 1.5rem 0 2rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-primary-soft);
}

.blog-article__cover img {
  width: 100%;
  height: auto;
  display: block;
}

.blog-article__body {
  color: var(--color-text);
  font-size: 1.02rem;
  line-height: 1.85;
}

.blog-article__body h2 {
  margin: 2.5rem 0 1rem;
  font-size: 1.6rem;
  line-height: 1.4;
  color: var(--color-text);
  border-left: 4px solid var(--color-primary);
  padding-left: 0.75rem;
}

.blog-article__body h3 {
  margin: 2rem 0 0.75rem;
  font-size: 1.2rem;
  color: var(--color-text);
}

.blog-article__body p {
  margin: 0 0 1.1rem;
}

.blog-article__body ul,
.blog-article__body ol {
  margin: 0 0 1.2rem 1.4rem;
  padding: 0;
}

.blog-article__body li {
  margin-bottom: 0.4rem;
}

.blog-article__body strong {
  color: var(--color-text);
  font-weight: 700;
}

.blog-article__body blockquote {
  margin: 1.2rem 0;
  padding: 0.85rem 1.15rem;
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-text);
  border-radius: var(--radius);
  font-style: italic;
}

.blog-article__body figure {
  margin: 2rem 0;
}

.blog-article__body figure img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.blog-article__body figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.blog-article__body table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.blog-article__body th,
.blog-article__body td {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.blog-article__body th {
  background: var(--color-primary-soft);
  color: var(--color-text);
  font-weight: 700;
}

.blog-article__body hr {
  margin: 2.5rem 0;
  border: 0;
  border-top: 1px solid var(--color-border);
}

.blog-article__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 2rem 0 2.5rem;
}

.blog-article__tag {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  padding: 0.25rem 0.7rem;
  background: var(--color-primary-soft);
  border-radius: var(--radius-pill);
}

.blog-article__back {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: color var(--transition-base), border-color var(--transition-base);
}

.blog-article__back:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ===== Whitepaper / Asset download CTA ===== */
.blog-download-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  align-items: center;
  margin: 2.5rem 0;
  padding: 1.5rem 1.75rem;
  background: linear-gradient(135deg, var(--color-primary-soft), transparent);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-lg);
}

.blog-download-cta__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
}

.blog-download-cta__body {
  flex: 1 1 20rem;
}

.blog-download-cta__title {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
}

.blog-download-cta__meta {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.blog-download-cta__action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-pill);
  text-decoration: none;
  font-weight: 600;
  transition: background var(--transition-base), transform var(--transition-base);
  white-space: nowrap;
}

.blog-download-cta__action:hover,
.blog-download-cta__action:focus-visible {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

/* ===== Fallback (pending translation) ===== */
.blog-fallback {
  max-width: 40rem;
  margin: 4rem auto;
  padding: 2.5rem 2rem;
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.blog-fallback h1 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  color: var(--color-text);
}

.blog-fallback p {
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

/* ===== Responsive ===== */
@media (max-width: 780px) {
  .blog-featured {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem;
  }

  .blog-hero {
    padding: 2.5rem 0 1.5rem;
  }
}