/**
 * Blog index — layout premium, sections distinctes, accessibilité.
 */

.blog-page {
  --blog-surface: hsl(var(--background));
  --blog-panel: hsl(var(--card));
  --blog-edge: hsl(var(--border) / 0.75);
  color: hsl(var(--foreground));
}

.blog-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: 96px;
  scroll-margin-top: 96px;
  border-bottom: 1px solid var(--blog-edge);
  background:
    radial-gradient(ellipse 80% 60% at 0% 0%, hsl(var(--primary) / 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 100% 20%, hsl(var(--brand-cyan, 199 89% 48%) / 0.08) 0%, transparent 50%),
    linear-gradient(135deg, hsl(var(--primary) / 0.92) 0%, hsl(var(--primary) / 0.78) 48%, hsl(243 55% 62%) 100%);
}

.blog-hero__inner {
  max-width: 80rem;
  margin-inline: auto;
  padding: 3rem 1rem 3.5rem;
}

.blog-hero__title {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.blog-hero__lead {
  max-width: 38rem;
  font-size: 1.05rem;
  line-height: 1.65;
  color: hsl(var(--foreground) / 0.82);
}

.blog-toolbar {
  border-bottom: 1px solid var(--blog-edge);
  background: hsl(var(--muted) / 0.45);
}

.blog-toolbar__form {
  max-width: 80rem;
  margin-inline: auto;
  padding: 1.25rem 1rem 1.5rem;
}

.blog-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--blog-edge);
  background: var(--blog-panel);
  color: hsl(var(--foreground));
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.blog-chip:hover {
  border-color: hsl(var(--primary) / 0.35);
  background: hsl(var(--primary) / 0.06);
  color: hsl(var(--primary));
}

.blog-chip--active {
  border-color: hsl(var(--primary));
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
}

.blog-featured {
  background: hsl(var(--muted) / 0.35);
  border-bottom: 1px solid var(--blog-edge);
}

.blog-featured__inner {
  max-width: 80rem;
  margin-inline: auto;
  padding: 2rem 1rem 2.5rem;
}

.blog-featured__grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (min-width: 1024px) {
  .blog-featured__grid {
    grid-template-columns: 1.35fr 1fr;
    grid-template-rows: repeat(2, minmax(0, 1fr));
  }

  .blog-featured__item--hero {
    grid-row: span 2;
  }
}

.blog-featured__media {
  aspect-ratio: 16 / 10;
  max-height: 12rem;
}

.blog-featured__media--hero {
  max-height: none;
  aspect-ratio: 16 / 11;
}

@media (min-width: 1024px) {
  .blog-featured__item--hero .blog-featured__media--hero {
    min-height: 100%;
    aspect-ratio: auto;
    flex: 1;
  }

  .blog-featured__item--hero .blog-featured__link {
    display: grid;
    grid-template-rows: 1fr auto;
  }
}

.blog-layout {
  max-width: 80rem;
  margin-inline: auto;
  padding: 2rem 1rem 3rem;
}

.blog-layout__grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 1024px) {
  .blog-layout__grid {
    grid-template-columns: minmax(0, 1fr) 20rem;
    align-items: start;
  }

  .blog-sidebar {
    position: sticky;
    top: 6.5rem;
  }
}

.blog-results__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--blog-edge);
}

.blog-results__title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.blog-results__count {
  font-size: 0.875rem;
  color: hsl(var(--muted-foreground));
}

.blog-results__grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .blog-results__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.blog-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.blog-card__media {
  aspect-ratio: 16 / 10;
}

.blog-card__image,
.blog-card__placeholder {
  min-height: 100%;
}

.blog-empty {
  border: 1px dashed var(--blog-edge);
  border-radius: 1rem;
  background: hsl(var(--muted) / 0.25);
  padding: 3rem 1.5rem;
  text-align: center;
}

.blog-newsletter {
  border-top: 1px solid var(--blog-edge);
  background: hsl(var(--muted) / 0.35);
}

@media (prefers-reduced-motion: reduce) {
  .blog-card__image,
  .blog-featured__link img {
    transition: none;
  }
}

@media (prefers-contrast: more) {
  .blog-chip,
  .blog-sidebar__panel,
  .blog-featured__link {
    border-width: 2px;
  }
}