/* ============================================================
   WholePeps — Blog / Research Hub Styles
   ============================================================ */

/* Hero */
.blog-hero {
  position: relative;
  padding: calc(var(--nav-height) + var(--space-12)) 0 var(--space-12);
  text-align: left;
  overflow: hidden;
}
.blog-hero .container { max-width: 980px; }
.blog-hero-title { font-size: clamp(2.4rem, 5vw, 4.25rem); font-weight: 600; line-height: 1.02; letter-spacing: -0.04em; margin: var(--space-3) 0 var(--space-4); max-width: 13ch; }
.blog-hero-sub { font-size: 1.05rem; color: var(--clr-text-2); max-width: 640px; margin: 0 0 var(--space-8); line-height: 1.85; }
.blog-search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  max-width: 620px;
  margin: 0;
  background: #ffffff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5);
  box-shadow: var(--shadow-sm);
}
.blog-search-bar input { flex: 1; background: transparent; border: none; outline: none; color: var(--clr-text); font-size: var(--text-base); }
.blog-search-bar svg { color: var(--clr-text-3); flex-shrink: 0; }

/* Featured Article */
.featured-article {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-8);
  padding: var(--space-7);
  border: 1px solid var(--clr-border-2);
  margin-bottom: var(--space-10);
}
.featured-article-img {
  border-radius: var(--radius-xl);
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
}
.featured-img-inner { display: flex; align-items: center; justify-content: center; }
.featured-img-inner svg,
.blog-card-img-inner svg {
  filter: grayscale(1) brightness(0.15);
  opacity: 0.45;
}
.featured-article-content { display: flex; flex-direction: column; justify-content: center; gap: var(--space-5); }
.featured-article-meta { display: flex; align-items: center; gap: var(--space-3); flex-wrap: wrap; }
.featured-article-content h2 { font-size: clamp(1.8rem, 3vw, 2.3rem); font-weight: 600; line-height: 1.15; letter-spacing: -0.03em; margin: 0; max-width: 18ch; }
.featured-article-content p { color: var(--clr-text-2); line-height: 1.7; margin: 0; }
.author-row { display: flex; align-items: center; gap: var(--space-3); }
.author-avatar {
  width: 40px; height: 40px;
  background: #111111;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: var(--text-xs); font-weight: 800; color: #fff;
}

/* Blog Filters */
.blog-filters { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-bottom: var(--space-8); }
.blog-filter-btn {
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-full);
  color: var(--clr-text-2);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.blog-filter-btn:hover { background: #f1f1f1; border-color: #d8d8d8; color: #111111; }
.blog-filter-btn.active { background: #111111; border-color: #111111; color: #ffffff; }

/* Blog Grid */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); margin-bottom: var(--space-16); }
.blog-card { display: flex; flex-direction: column; text-decoration: none; border: 1px solid var(--clr-border); overflow: hidden; transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast); }
.blog-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: rgba(17,17,17,0.12); }
.blog-card-img {
  height: 140px;
  background: #ffffff;
  display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--clr-border);
}
.blog-card-img-inner { display: flex; align-items: center; justify-content: center; }
.blog-card-body { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
.blog-card-meta { display: flex; align-items: center; gap: var(--space-2); }
.blog-card-body h3 { font-size: var(--text-base); font-weight: 700; line-height: 1.4; color: var(--clr-text); margin: 0; }
.blog-card-body p { font-size: var(--text-sm); color: var(--clr-text-2); line-height: 1.6; margin: 0; flex: 1; }
.blog-card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: auto; padding-top: var(--space-3); border-top: 1px solid var(--clr-border); }

/* Newsletter */
.newsletter-section {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-10);
  align-items: center;
  padding: var(--space-8);
  border: 1px solid var(--clr-border-2);
  margin-bottom: var(--space-16);
}
.newsletter-content h2 { font-size: clamp(1.8rem, 3vw, 2.3rem); font-weight: 600; letter-spacing: -0.03em; margin: var(--space-3) 0; }
.newsletter-content p { color: var(--clr-text-2); line-height: 1.7; }
.newsletter-form { display: flex; flex-direction: column; gap: var(--space-3); }
.newsletter-form .btn { width: 100%; }

/* Footer */
.footer { padding: var(--space-8) 0 var(--space-6); border-top: 1px solid var(--clr-border); }
.footer-disclaimer {
  background: #ffffff;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
}
.footer-disclaimer p { font-size: var(--text-xs); color: var(--clr-text-3); line-height: 1.7; margin: 0; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-5);
  border-top: 1px solid var(--clr-border);
  font-size: var(--text-xs);
  color: var(--clr-text-3);
}
.footer-bottom a { color: var(--clr-text-3); text-decoration: none; transition: color var(--transition-fast); }
.footer-bottom a:hover { color: var(--clr-text); }

/* Responsive */
@media (max-width: 1024px) {
  .blog-hero { text-align: center; }
  .blog-hero-title, .blog-hero-sub { margin-left: auto; margin-right: auto; }
  .blog-search-bar { margin: 0 auto; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-article { grid-template-columns: 1fr; }
  .featured-article-img { min-height: 160px; }
  .newsletter-section { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .blog-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--space-3); text-align: center; }
}