/* Series bài viết — dùng cho page-series.php (trang chỉ mục + trang từng series) */

/* ── Lưới series ở trang /series/ ─────────────────────────────────────────── */
.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.series-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--series-accent, #00DC82);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease;
}
.series-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(15, 23, 42, .09);
}
.series-card__icon { font-size: 1.9rem; line-height: 1; }
.series-card__name {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.35;
}
.series-card__tagline {
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
}
.series-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: .82rem;
}
.series-card__count {
  font-weight: 600;
  color: var(--series-accent, #00DC82);
}
.series-card__cta { color: var(--text-muted); font-weight: 600; }

/* ── Danh sách bài trong 1 series ─────────────────────────────────────────── */
.series-list { list-style: none; margin: 0; padding: 0; }
.series-list__item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.series-list__num {
  flex-shrink: 0;
  width: 34px;
  margin-top: 22px;
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 800;
  font-size: .95rem;
  color: var(--series-accent, #00DC82);
}
.series-list__body { flex: 1; min-width: 0; }

.series-empty {
  padding: 20px 22px;
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: .93rem;
  line-height: 1.65;
}

/* ── Lộ trình series ──────────────────────────────────────────────────────── */
.series-steps {
  margin-top: 32px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.series-steps__title {
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 14px;
}
.series-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.series-steps__item {
  position: relative;
  padding-left: 22px;
  font-size: .93rem;
  line-height: 1.6;
  color: var(--text-muted);
}
.series-steps__item::before {
  content: '';
  position: absolute;
  left: 4px;
  top: .55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--series-accent, #00DC82);
}

/* ── Cột phải ─────────────────────────────────────────────────────────────── */
.series-side { display: flex; flex-direction: column; }

@media (max-width: 900px) {
  .series-list__num { margin-top: 16px; width: 26px; font-size: .85rem; }
}