/* Learn hub + guide template styles.
   Keep global primitives in /styles.css; scope Learn-specific blocks here. */

.learn-hub .hub-hero {
  text-align: center;
  padding: 72px 20px 52px;
  background: radial-gradient(circle at 50% -20%, rgba(103, 179, 255, 0.12), transparent 60%);
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.learn-hub .hub-hero h1 {
  font-size: 48px;
  margin: 0 0 16px;
  background: linear-gradient(to bottom right, var(--headline), var(--text));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.learn-hub .hub-hero p {
  font-size: 18px;
  color: var(--text-soft);
  max-width: 720px;
  margin: 0 auto 20px;
  line-height: 1.6;
}
.learn-hub .hero-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.learn-hub .category-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 0 auto;
}
.learn-hub .category-nav-shell {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin: 0 auto 36px;
}
.learn-hub .cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--headline);
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.2s;
}
.learn-hub .cat-chip:hover {
  border-color: var(--accent2);
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  transform: translateY(-2px);
}

.learn-hub .section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
}
.learn-hub .section-header h2 {
  font-size: 24px;
  margin: 0;
  color: var(--headline);
}
.learn-hub .badge {
  background: rgba(80, 227, 164, 0.1);
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--accent);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
:root[data-theme="light"] .learn-hub .badge {
  background: color-mix(in srgb, var(--accent2) 18%, #ffffff 82%);
  border: 1px solid color-mix(in srgb, var(--accent2) 42%, transparent);
  color: #1f4f83;
}

.learn-hub .hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-bottom: 52px;
}

.learn-hub .guide-card {
  position: relative;
  background: linear-gradient(180deg, var(--surface-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}
.learn-hub .guide-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  background: radial-gradient(circle, rgba(103,179,255,0.12) 0%, transparent 70%);
  opacity: 0.5;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.learn-hub .guide-card:hover {
  border-color: var(--accent2);
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0,0,0,0.4);
}
.learn-hub .guide-card:hover::before {
  opacity: 1;
}

.learn-hub .guide-card__media {
  width: 100%;
  height: 180px;
  overflow: hidden;
  border-bottom: 1px solid rgba(103,179,255,0.12);
  background: var(--surface-0);
}
.learn-hub .guide-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.learn-hub .guide-card__body {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}
.learn-hub .guide-card__eyebrow {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.learn-hub .guide-card__body h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--headline);
}
.learn-hub .guide-card__body p {
  font-size: 15px;
  color: var(--text-muted);
  margin: 0 0 16px;
  line-height: 1.6;
}
.learn-hub .guide-card__meta {
  margin-top: auto;
  font-size: 13px;
  color: var(--sub);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.learn-hub .guide-card__cta {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
  background: var(--accent2);
  padding: 6px 14px;
  border-radius: 99px;
  text-decoration: none;
  transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(103,179,255,0.2);
  margin-left: auto;
}
.learn-hub .guide-card__cta:hover {
  background: #8ec6ff;
  background: color-mix(in srgb, var(--accent2) 72%, #ffffff 28%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(103,179,255,0.3);
}

@media (max-width: 768px) {
  .learn-hub .hub-hero h1 { font-size: 34px; }
  .learn-hub .hub-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
}
@media (max-width: 540px) {
  .learn-hub .hub-hero { padding: 64px 18px 40px; }
  .learn-hub .hub-hero h1 { font-size: 30px; }
  .learn-hub .hub-grid { grid-template-columns: 1fr; }
}

:root[data-theme="light"] .learn-hub .guide-card {
  box-shadow: 0 14px 32px rgba(20, 42, 74, 0.12);
}

:root[data-theme="light"] .learn-hub .guide-card:hover {
  box-shadow: 0 18px 36px rgba(20, 42, 74, 0.18);
}