/* ============================================================
 * CorneaDx Blog — styles for listing & post pages
 * ============================================================ */

/* ── Blog hero ── */
.blog-hero {
  position: relative;
  padding: 100px 0 80px;
  background: linear-gradient(180deg, var(--bg-warm) 0%, var(--bg) 100%);
  overflow: hidden;
  text-align: center;
}
.blog-hero .container { position: relative; z-index: 1; }
.blog-hero-content { max-width: 760px; margin: 0 auto; }
.blog-hero-title {
  font-size: clamp(2.2rem, 4.4vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 14px 0 14px;
}
.blog-gradient-text {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.blog-hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.65;
  margin: 0 auto;
}

/* ── Blog listing grid ── */
.blog-listing-section { padding: 80px 0; background: var(--bg); }
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.4s ease,
              border-color 0.4s ease;
}
.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(13, 148, 136, 0.14);
  border-color: var(--primary-light);
}
.blog-card-link { display: block; text-decoration: none; color: inherit; }
.blog-card-link:hover { color: inherit; }

.blog-card-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-warm);
}
.blog-card-cover img {
  width: 100%; height: 100%; display: block;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.blog-card:hover .blog-card-cover img { transform: scale(1.06); }

.blog-card-category {
  position: absolute;
  top: 14px; left: 14px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: rgba(13, 148, 136, 0.92);
  color: white;
  backdrop-filter: blur(8px);
}

.blog-card-body { padding: 24px 24px 28px; }
.blog-card-meta {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.78rem; color: var(--text-muted);
  margin-bottom: 12px;
}
.blog-card-title {
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card-excerpt {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.blog-card-author {
  display: flex; align-items: center; gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
}
.blog-card-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 600; font-size: 0.78rem;
  flex-shrink: 0;
}
.blog-card-author-name { font-size: 0.85rem; font-weight: 600; color: var(--text); }
.blog-card-author-role { font-size: 0.75rem; color: var(--text-muted); }

/* ── Blog post page ── */
.blog-post { padding: 40px 0 60px; background: var(--bg); }
.blog-post .container { max-width: 760px; }

.blog-post-back {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.85rem; font-weight: 500; color: var(--text-muted);
  margin-bottom: 32px; text-decoration: none;
  transition: color 0.25s ease, gap 0.25s ease;
}
.blog-post-back:hover { color: var(--primary); gap: 10px; }

.blog-post-header { margin-bottom: 36px; }
.blog-post-meta {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px;
}
.blog-post-meta .blog-card-category { position: static; }
.blog-post-title {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  font-weight: 700; line-height: 1.2; letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}
.blog-post-excerpt {
  font-size: 1.1rem; color: var(--text-light); line-height: 1.65;
  margin-bottom: 28px;
}
.blog-post-author { display: flex; align-items: center; gap: 12px; }

.blog-post-cover {
  margin: 0 0 40px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.blog-post-cover img { width: 100%; height: auto; display: block; }

.blog-post-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-light);
}
.blog-post-body h2 {
  font-size: 1.45rem; font-weight: 600; color: var(--text);
  margin: 36px 0 14px; letter-spacing: -0.01em;
}
.blog-post-body h3 {
  font-size: 1.2rem; font-weight: 600; color: var(--text);
  margin: 28px 0 12px;
}
.blog-post-body p { margin-bottom: 18px; max-width: 100%; }
.blog-post-body ul, .blog-post-body ol {
  margin: 0 0 20px 22px;
}
.blog-post-body li { margin-bottom: 8px; }
.blog-post-body strong { color: var(--text); }
.blog-post-body a { color: var(--primary-dark); text-decoration: underline; text-underline-offset: 3px; }

.blog-post-tags {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin: 40px 0 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
}
.blog-tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(13, 148, 136, 0.08);
  color: var(--primary-dark);
  border: 1px solid rgba(13, 148, 136, 0.2);
  border-radius: 100px;
  font-size: 0.8rem; font-weight: 500;
}
.blog-post-cta { margin: 40px 0 0; }

/* Related section */
.blog-related {
  padding: 80px 0;
  background: var(--bg-warm);
  border-top: 1px solid var(--border-light);
}

/* Nav dropdown styles live in style.css so they apply on every page */

/* ── Responsive ── */
@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .blog-grid { grid-template-columns: 1fr; }
  .blog-hero { padding: 60px 0 40px; }
  .blog-card-body { padding: 20px; }
}