/* ── learn.css — Articles ── */

/* Hero */
.learn-hero {
  padding: 140px 0 64px;
}
.learn-hero-content { max-width: 600px; }
.learn-hero h1 { margin-bottom: 16px; }
.learn-hero p { color: var(--color-muted); font-size: 1.05rem; max-width: 520px; }
.learn-hero .section-label { margin-bottom: 12px; }

/* Filter Bar */
.learn-filter-bar {
  background: var(--color-white);
  border-bottom: 2px solid var(--color-border);
  position: sticky;
  top: 72px;
  z-index: 99;
}
.learn-filter-inner {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  gap: 4px;
  padding: 12px 0;
}
.learn-filter-inner::-webkit-scrollbar { display: none; }
.learn-filter-btn {
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-muted);
  background: var(--color-linen);
  border: 2px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--transition);
}
.learn-filter-btn:hover { color: var(--color-navy); background: var(--color-teal-pale); }
.learn-filter-btn.active {
  background: var(--color-navy);
  color: white;
  border-color: var(--color-navy);
}

/* Articles Grid */
.learn-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 1024px) { .learn-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .learn-grid { grid-template-columns: 1fr; } }

/* Article Card */
.learn-article-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: var(--color-ink);
}
.learn-article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.learn-card-accent {
  height: 4px;
  background: linear-gradient(90deg, var(--color-teal), var(--color-green));
}
.learn-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; gap: 10px; }
.learn-card-badges { display: flex; gap: 6px; flex-wrap: wrap; }
.learn-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-ink);
}
.learn-card-excerpt { font-size: 0.85rem; color: var(--color-muted); flex: 1; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.learn-card-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  display: flex;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border);
}

/* Newsletter */
.newsletter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  max-width: 900px;
  margin: 0 auto;
}
@media (max-width: 768px) { .newsletter-inner { flex-direction: column; text-align: center; } }
.newsletter-text { flex: 1; }
.newsletter-form { flex: 1; max-width: 400px; }
.newsletter-input-wrap { display: flex; gap: 8px; }
.newsletter-input-wrap .form-control { flex: 1; border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.1); color: white; }
.newsletter-input-wrap .form-control::placeholder { color: rgba(255,255,255,0.5); }
.newsletter-input-wrap .form-control:focus { border-color: var(--color-green); }