/* /learn hub — richer layout on top of bridge.css */
body.theme-learn .wrap { max-width: 960px; }

.learn-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
}
.learn-stat {
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(2, 6, 23, 0.22);
  text-align: center;
}
.learn-stat strong {
  display: block;
  font-size: 1.15rem;
  font-weight: 800;
  color: #ecfeff;
  letter-spacing: -0.02em;
}
.learn-stat span {
  display: block;
  margin-top: 2px;
  font-size: 0.72rem;
  font-weight: 700;
  color: rgba(204, 251, 241, 0.88);
}

.learn-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
  position: sticky;
  top: 8px;
  z-index: 30;
  padding: 8px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 88%, transparent);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
.learn-jump a {
  text-decoration: none;
  color: var(--text);
  font-weight: 800;
  font-size: 0.72rem;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  line-height: 1.1;
}
.learn-jump a:hover,
.learn-jump a:focus-visible {
  border-color: var(--accent);
  color: var(--ink);
  outline: none;
}
html.dark .learn-jump {
  background: color-mix(in srgb, #0f172a 88%, transparent);
}

.learn-tools {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}
.learn-search-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.learn-search {
  flex: 1 1 220px;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 14px;
  font: inherit;
  font-weight: 650;
  font-size: 0.92rem;
  background: var(--card);
  color: var(--text);
}
.learn-search:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  border-color: var(--accent);
}
.learn-count {
  font-size: 0.8rem;
  font-weight: 750;
  color: var(--muted);
  white-space: nowrap;
}
.learn-empty {
  display: none;
  margin: 8px 0 0;
  padding: 12px;
  border-radius: 12px;
  border: 1px dashed var(--border);
  color: var(--muted);
  font-weight: 650;
  font-size: 0.9rem;
}
.learn-empty.show { display: block; }

.learn-path {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}
.learn-step {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #fff;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
html.dark .learn-step { background: #1e293b; }
.learn-step:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 16%, transparent);
}
.learn-step .n {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.85rem;
  color: #ecfeff;
  background: linear-gradient(145deg, #0f766e, #0e7490);
  box-shadow: 0 6px 14px rgba(15, 118, 110, 0.28);
}
.learn-step .copy strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 800;
}
.learn-step .copy span {
  display: block;
  margin-top: 2px;
  font-size: 0.8rem;
  font-weight: 650;
  color: var(--muted);
  font-family: var(--font-thai);
}
.learn-step .go {
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--ink);
}

.learn-featured {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
  margin-top: 10px;
}
.learn-feat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 132px;
  padding: 14px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background:
    radial-gradient(420px 160px at 0% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%),
    #fff;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
html.dark .learn-feat {
  background:
    radial-gradient(420px 160px at 0% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%),
    #1e293b;
}
.learn-feat:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.learn-feat .ico { font-size: 1.55rem; line-height: 1; }
.learn-feat strong { font-size: 1rem; font-weight: 800; }
.learn-feat .th {
  font-family: var(--font-thai);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--thai);
}
.learn-feat em {
  margin-top: auto;
  font-style: normal;
  font-size: 0.78rem;
  font-weight: 650;
  color: var(--muted);
  line-height: 1.35;
}

.learn-hub-group {
  scroll-margin-top: 64px;
}
.learn-hub-group .learn-blurb {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
  font-weight: 600;
}
.learn-hub-group .learn-blurb .th {
  display: block;
  font-family: var(--font-thai);
  margin-top: 2px;
  margin-left: 0;
  font-size: 0.86rem;
}

.br-link-card .hint {
  font-size: 0.72rem;
  font-weight: 650;
  color: var(--muted);
  line-height: 1.3;
}
.br-link-card.featured {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent) 10%, #fff) 0%, #fff 70%);
}
html.dark .br-link-card.featured {
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent) 18%, #1e293b) 0%, #1e293b 70%);
}
.br-link-card.is-hidden { display: none !important; }
.learn-hub-group.is-empty { display: none; }

.learn-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 10px;
}
.learn-chip {
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  border-radius: 999px;
  padding: 6px 11px;
  font: inherit;
  font-size: 0.74rem;
  font-weight: 800;
  cursor: pointer;
  line-height: 1.15;
}
.learn-chip:hover { border-color: var(--accent); }
.learn-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
html.dark .learn-chip.active { color: #042f2e; }

@media (max-width: 640px) {
  .learn-stats { grid-template-columns: 1fr; }
  .learn-jump { gap: 5px; padding: 7px; }
  .learn-jump a { font-size: 0.68rem; padding: 6px 8px; }
  .learn-step {
    grid-template-columns: auto 1fr;
  }
  .learn-step .go { display: none; }
}