/* ── Catalogue Hunonic (/catalogue) ─────────────────────────────────── */

.catalogue-wrap {
  max-width: 1200px;
  margin: 32px auto;
  padding: 0 16px 60px;
}

.catalogue-head { text-align: center; margin-bottom: 20px; }
.catalogue-head h1 { font-size: 1.7rem; color: var(--text); margin-bottom: 16px; }

.catalogue-actions {
  display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: center; align-items: center;
}
.catalogue-mode {
  display: inline-flex; border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.catalogue-mode button {
  padding: 8px 16px; border: 0; background: #fff; cursor: pointer;
  font-size: .95rem; color: var(--text);
}
.catalogue-mode button + button { border-left: 1px solid var(--border); }
.catalogue-mode button.active { background: var(--primary); color: #fff; }

/* ── Lật trang ── */
.catalogue-book { background: var(--bg-gray); border-radius: var(--radius); padding: 16px; }
.catalogue-stage {
  position: relative; display: flex; align-items: center; gap: 8px;
}
/* Khung giữ đúng tỉ lệ trang — StPageFlip (size: stretch) lấy kích thước từ khung này */
.catalogue-page {
  flex: 1; min-width: 0; aspect-ratio: 1400 / 973; position: relative;
}
#catalogue-flip { width: 100%; height: 100%; }
.catalogue-leaf { background: #fff; overflow: hidden; }
.catalogue-leaf img {
  width: 100%; height: 100%; object-fit: contain; display: block;
  user-select: none; -webkit-user-drag: none; pointer-events: none;
}
.catalogue-page .stf__parent { box-shadow: 0 6px 24px rgba(0,0,0,.18); }

.catalogue-nav {
  flex: none; width: 44px; height: 44px; border-radius: 50%;
  border: 0; background: #fff; box-shadow: var(--shadow);
  font-size: 2rem; line-height: 1; color: var(--primary); cursor: pointer;
}
.catalogue-nav:disabled { opacity: .3; cursor: default; }
.catalogue-nav:not(:disabled):hover { background: var(--primary); color: #fff; }

.catalogue-bar {
  display: flex; align-items: center; gap: 12px; margin-top: 12px;
}
.catalogue-counter { white-space: nowrap; font-weight: 600; min-width: 64px; }
.catalogue-bar input[type=range] { flex: 1; accent-color: var(--primary); }
.catalogue-fs {
  border: 0; background: none; font-size: 1.3rem; cursor: pointer; color: var(--text);
}

/* Toàn màn hình */
.catalogue-book:fullscreen {
  display: flex; flex-direction: column; justify-content: center;
  border-radius: 0; background: #222;
}
.catalogue-book:fullscreen .catalogue-page {
  flex: none; width: min(100% - 104px, (100vh - 80px) * 1400 / 973); margin: 0 auto;
}
.catalogue-book:fullscreen .catalogue-counter,
.catalogue-book:fullscreen .catalogue-fs { color: #fff; }

/* ── Cuộn ── */
.catalogue-scroll img {
  width: 100%; height: auto; display: block; margin-bottom: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,.12); scroll-margin-top: calc(var(--header-h) + 12px);
}

/* ── Mục lục ── */
.catalogue-toc { margin-top: 36px; }
.catalogue-toc h2 { font-size: 1.3rem; margin-bottom: 12px; }
.catalogue-toc ol { columns: 2; column-gap: 32px; padding-left: 20px; }
.catalogue-toc li {
  break-inside: avoid; padding: 6px 0; border-bottom: 1px dashed var(--border);
}
.catalogue-toc-page { color: var(--text-muted); font-size: .85rem; margin-left: 6px; }
.catalogue-toc-shop { font-size: .85rem; color: var(--primary); margin-left: 8px; white-space: nowrap; }

@media (max-width: 768px) {
  .catalogue-head h1 { font-size: 1.35rem; }
  .catalogue-actions { flex-wrap: nowrap; gap: 8px; }
  .catalogue-mode button { padding: 8px 12px; font-size: .9rem; white-space: nowrap; }
  .catalogue-download { padding: 8px 12px; font-size: .9rem; white-space: nowrap; }
  /* Tràn sát 2 mép màn hình, bỏ qua lề của .container/.catalogue-wrap */
  .catalogue-book, .catalogue-scroll {
    width: 100vw; margin-left: calc(50% - 50vw); border-radius: 0;
  }
  .catalogue-book { padding: 0 0 4px; }
  .catalogue-bar { padding: 0 12px; }
  .catalogue-page .stf__parent { box-shadow: none; }
  .catalogue-nav {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 2;
    width: 34px; height: 34px; font-size: 1.5rem; background: rgba(255,255,255,.85);
  }
  .catalogue-nav.prev { left: 4px; }
  .catalogue-nav.next { right: 4px; }
  .catalogue-nav:disabled { display: none; }
  .catalogue-toc ol { columns: 1; }
  .catalogue-scroll img { margin-bottom: 8px; }
}