/* ===== Book Series Section — Editorial Light ===== */
:root {
  --bs-bg: transparent;
  --bs-surface: #ffffff;
  --bs-ink: var(--tf-text);
  --bs-ink-soft: var(--tf-text-soft);
  --bs-accent: var(--tf-accent);
  --bs-radius: var(--tf-r-sm);
  --bs-gap: var(--home-card-gap, 1.5rem);
}

@media (max-width: 820px) {
  .bs-header__main,
  .bs-sub {
    width: 100%;
    max-width: calc(100vw - 48px);
  }
}

.bs-section {
  width: var(--home-section-w, min(var(--tf-max-w), 90vw));
  margin: 0 auto var(--home-section-y, 48px);
  background: var(--bs-bg);
  padding: var(--home-section-y, 48px) 0 0;
}

.bs-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: clamp(1rem, 2.4vw, 2rem);
  margin-bottom: var(--home-section-gap, 22px);
  padding-inline: var(0, 1.5rem);
  border-bottom: 1px solid var(--tf-border);
  padding-bottom: clamp(12px, 1.5vw, 16px);
}

.bs-header__main {
  max-width: 650px;
}

.bs-title {
  font-family: "Newsreader", serif;
  font-weight: 500;
  margin: 0 0 7px;
  font-size: var(--home-title-size, clamp(30px, 3.2vw, 44px));
  color: var(--bs-ink);
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.bs-sub {
  margin: 0;
  color: var(--bs-ink-soft);
  font: 500 var(--home-sub-size, 1rem)/1.5 "Manrope", sans-serif;
}

.bs-header__ctrl {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 7px;
  flex-shrink: 0;
}

.bs-link {
  display: inline-flex;
  align-items: center;
  font: 700 0.75rem/1 "Manrope", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  color: var(--bs-accent);
  transition: all 0.3s var(--tf-ease);
}

.bs-link:hover {
  color: var(--tf-text);
  transform: translateX(5px);
}

.bs-link::after {
  content: " \2192";
  margin-left: 8px;
}

/* Track */
.bs-track {
  display: flex;
  gap: var(--bs-gap);
  overflow-x: auto;
  padding: 12px var(--home-section-pad-x, 1.5rem) 28px;
  scroll-padding-inline: var(--home-section-pad-x, 1.5rem);
  scrollbar-width: none;
}
.bs-track::-webkit-scrollbar { display: none; }

/* Cards */
.bs-card {
  flex: 0 0 auto;
  width: clamp(200px, 16vw, 240px);
  background: var(--bs-surface);
  border-radius: var(--bs-radius);
  overflow: hidden;
  transition: all 0.6s var(--tf-ease-spring);
  box-shadow: var(--tf-shadow-sm);
}

.bs-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--tf-shadow-md);
}

.bs-card__media {
  display: block;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--tf-bg-mid);
}

.bs-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--tf-ease);
}

.bs-card:hover .bs-card__media img {
  transform: scale(1.04);
}

.bs-card__body { padding: var(--home-card-body-pad, 20px); }

.bs-card__title {
  font-family: "Newsreader", serif;
  font-size: clamp(1rem, 1.1vw, 1.15rem);
  font-weight: 500;
  margin: 0 0 8px;
}

.bs-card__desc {
  font-family: "Manrope", sans-serif;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--bs-ink-soft);
  margin-bottom: 16px;
}

.bs-card__meta, .bs-card__likes {
  font-family: "Manrope", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--bs-accent);
  letter-spacing: 0.05em;
}

.bs-empty {
  color: var(--bs-ink-soft);
  font-style: italic;
  padding-left: 2rem;
}

@media (max-width: 820px) {
  .bs-section {
    width: 100%;
    max-width: 100vw;
    overflow-x: clip;
  }
  .bs-header {
    flex-direction: column;
    align-items: flex-start;
    padding-inline: var(--home-section-pad-x, 24px);
  }
  .bs-header__main,
  .bs-sub {
    max-width: 100%;
    overflow-wrap: anywhere;
  }
  .bs-title { font-size: clamp(1.6rem, 8vw, 2rem); }
  .bs-header__ctrl { margin-bottom: 0; }
  .bs-card { flex-basis: min(65vw, 240px); }
  .bs-card__body { padding: 1.25rem; }
}