/* ============================================
   Research Library — Premium editorial design
   Morningstar × Bloomberg × Apple × The Economist
   ============================================ */

/* ── Library Search ── */
.lib-search {
  max-width: 680px;
  margin: 0 auto 2rem;
}
.lib-search__box {
  display: flex;
  align-items: center;
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: 16px;
  padding: 0.6rem 1.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  transition: all 0.25s ease;
}
.lib-search__box:focus-within {
  border-color: var(--color-primary-light);
  box-shadow: 0 8px 32px rgba(27, 67, 50, 0.06), 0 0 0 4px rgba(27, 67, 50, 0.03);
}
.lib-search__icon {
  color: var(--color-text-subtle);
  flex-shrink: 0;
  margin-right: 0.85rem;
}
.lib-search__input {
  border: none; outline: none;
  font-family: var(--font-main);
  font-size: 0.95rem;
  color: var(--color-text);
  flex: 1; padding: 0.75rem 0;
  background: transparent; width: 100%;
}
.lib-search__input::placeholder { color: var(--color-text-subtle); }

/* ── Filter Chips ── */
.lib-filters {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 3rem;
  position: sticky;
  top: 64px;
  z-index: 10;
  background: var(--color-white);
  padding: 0.75rem 0;
}
.lib-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  font-family: var(--font-main);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.lib-chip:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary);
}
.lib-chip--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}
.lib-chip--active:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  color: var(--color-white);
}
.lib-chip__count {
  font-size: 0.68rem;
  opacity: 0.7;
}

/* ── Library Grid ── */
.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

/* ── Library Card ── */
.lib-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.lib-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px -4px rgba(0, 0, 0, 0.07);
  border-color: transparent;
}
.lib-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}
.lib-card__cat {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}
.lib-card__cat--green { background: rgba(4, 120, 87, 0.06); color: var(--color-positive); }
.lib-card__cat--purple { background: rgba(124, 58, 237, 0.05); color: var(--color-cat-funds); }
.lib-card__cat--blue { background: rgba(29, 78, 216, 0.05); color: var(--color-cat-stocks); }
.lib-card__cat--amber { background: rgba(180, 83, 9, 0.05); color: var(--color-cat-faith); }
.lib-card__confidence {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--color-text-subtle);
}
.lib-card__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
}
.lib-card__dot--high { background: var(--color-positive); }
.lib-card__dot--medium { background: var(--color-warning); }
.lib-card__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 0.4rem;
  line-height: 1.3;
}
.lib-card__summary {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  flex: 1;
  margin-bottom: 0.75rem;
}
.lib-card__meta {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-bottom: 0.85rem;
}
.lib-card__badge {
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 100px;
  letter-spacing: 0.2px;
}
.lib-card__badge--green { background: rgba(4, 120, 87, 0.07); color: var(--color-positive); }
.lib-card__badge--blue { background: rgba(29, 78, 216, 0.06); color: var(--color-info); }
.lib-card__badge--amber { background: rgba(180, 83, 9, 0.06); color: var(--color-warning); }
.lib-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-light);
}
.lib-card__date {
  font-size: 0.68rem;
  color: var(--color-text-subtle);
}
.lib-card__cta {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  transition: color 0.2s ease;
}
.lib-card:hover .lib-card__cta { color: var(--color-primary-light); }

/* ── Browse All ── */
.lib-browse {
  text-align: center;
  padding-top: 1rem;
}
.lib-browse__count {
  font-size: 0.82rem;
  color: var(--color-text-subtle);
  margin-bottom: 1rem;
}

/* ── Category Panels ── */
.lib-category {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.25s ease;
}
.lib-category:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
  border-color: transparent;
}
.lib-category__icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1rem;
}
.lib-category__icon--green { background: rgba(4, 120, 87, 0.06); color: var(--color-positive); }
.lib-category__icon--purple { background: rgba(124, 58, 237, 0.05); color: var(--color-cat-funds); }
.lib-category__icon--blue { background: rgba(29, 78, 216, 0.05); color: var(--color-cat-stocks); }
.lib-category__icon--amber { background: rgba(180, 83, 9, 0.05); color: var(--color-cat-faith); }
.lib-category__icon svg { stroke: currentColor; }
.lib-category__title {
  font-size: 0.95rem; font-weight: 700;
  color: var(--color-primary-dark); margin-bottom: 0.2rem;
}
.lib-category__count {
  font-size: 0.72rem; font-weight: 600;
  color: var(--color-text-subtle); margin-bottom: 0.5rem;
}
.lib-category__desc {
  font-size: 0.78rem; color: var(--color-text-muted);
  line-height: 1.5; flex: 1; margin-bottom: 0.75rem;
}
.lib-category__cta {
  font-size: 0.78rem; font-weight: 600; color: var(--color-primary);
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .lib-grid { grid-template-columns: 1fr; }
  .lib-filters {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 0.75rem 0.5rem;
    -webkit-overflow-scrolling: touch;
  }
  .lib-search__input { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .lib-card, .lib-category { transition: none; }
  .lib-card:hover, .lib-category:hover { transform: none; }
}