/* ==========================================================================
   Modal "Đọc thử" ở trang chi tiết sách — chỉ nạp (sh_asset) khi sách có đọc thử.
   Trang sách là ảnh do server render sẵn từ PDF, xem js/book-reader.js.
   ========================================================================== */

.sh-sample-btn { margin-top: var(--sh-space-6); }

html.sh-reader-open { overflow: hidden; }

.sh-reader {
  position: fixed; inset: 0; z-index: var(--sh-z-top);
  width: 100%; height: 100%; max-width: none; max-height: none;
  margin: 0; padding: 0; border: 0;
  background: var(--sh-deep-950); color: #fff;
}
.sh-reader[open] { display: flex; flex-direction: column; }
.sh-reader::backdrop { background: color-mix(in srgb, #000 70%, transparent); }

/* ---------- Thanh trên ---------- */
.sh-reader__bar {
  display: flex; align-items: center; gap: var(--sh-space-4);
  padding: var(--sh-space-3) var(--sh-space-4) var(--sh-space-3) var(--sh-space-5);
  background: color-mix(in srgb, var(--sh-deep-950) 80%, #000);
  border-bottom: 1px solid color-mix(in srgb, #fff 10%, transparent);
}
.sh-reader__heading { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.sh-reader__eyebrow {
  font-size: var(--sh-text-xs); font-weight: var(--sh-weight-semibold);
  letter-spacing: .08em; text-transform: uppercase; color: var(--sh-glow);
}
.sh-reader__title {
  font-family: var(--sh-font-serif); font-size: var(--sh-text-lg); font-weight: var(--sh-weight-semibold);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sh-reader__counter {
  flex-shrink: 0; font-size: var(--sh-text-sm); color: var(--sh-on-deep-muted);
  font-variant-numeric: tabular-nums;
}
.sh-reader__close {
  flex-shrink: 0; display: inline-grid; place-items: center;
  width: 40px; height: 40px; padding: 0; border-radius: var(--sh-radius-pill);
  border: 1px solid color-mix(in srgb, #fff 18%, transparent); background: transparent; color: #fff;
  cursor: pointer; transition: background var(--sh-duration) var(--sh-ease);
}
.sh-reader__close:hover { background: color-mix(in srgb, #fff 12%, transparent); }
.sh-reader__close:focus-visible { outline: 2px solid var(--sh-glow); outline-offset: 2px; }
.sh-reader__close .sh-icon { width: var(--sh-icon-md); height: var(--sh-icon-md); }

/* ---------- Vùng đọc ---------- */
.sh-reader__body {
  flex: 1; overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch;
  padding: var(--sh-space-6) var(--sh-space-4) var(--sh-space-16);
}
.sh-reader__body:focus { outline: none; }

.sh-reader__pages {
  display: flex; flex-direction: column; gap: var(--sh-space-4);
  max-width: 860px; margin: 0 auto;
}
.sh-reader__page {
  margin: 0; overflow: hidden; border-radius: 2px;
  background: color-mix(in srgb, #fff 90%, var(--sh-deep));
  box-shadow: 0 12px 32px -10px rgba(0, 0, 0, .7);
}
/* Rào cản nhẹ việc lưu ảnh (chuột phải, giữ lâu trên iOS, kéo thả) — không chặn được chụp màn hình */
.sh-reader__page img {
  display: block; width: 100%; height: auto;
  pointer-events: none; -webkit-user-select: none; user-select: none; -webkit-touch-callout: none;
}

.sh-reader__status {
  max-width: 860px; margin: var(--sh-space-10) auto; text-align: center; color: var(--sh-on-deep-muted);
}
.sh-reader__status .sh-btn {
  margin-left: var(--sh-space-2); color: #fff; border-color: color-mix(in srgb, #fff 30%, transparent);
}

/* ---------- Hết phần đọc thử: mời mua sách ---------- */
.sh-reader__end {
  max-width: 480px; margin: var(--sh-space-10) auto 0; padding: var(--sh-space-6);
  border-radius: var(--sh-radius-card); background: var(--sh-surface); color: var(--sh-text);
  text-align: center;
}
.sh-reader__end-title {
  margin: 0 0 var(--sh-space-2); font-family: var(--sh-font-serif);
  font-size: var(--sh-text-xl); font-weight: var(--sh-weight-semibold); color: var(--sh-ink);
}
.sh-reader__end .sh-buy-links { margin-top: var(--sh-space-4); text-align: left; }

@media (max-width: 640px) {
  .sh-reader__bar { gap: var(--sh-space-3); padding: var(--sh-space-2) var(--sh-space-2) var(--sh-space-2) var(--sh-space-4); }
  .sh-reader__title { font-size: var(--sh-text-base); }
  .sh-reader__body { padding: var(--sh-space-3) 0 var(--sh-space-12); }
  .sh-reader__pages { gap: var(--sh-space-2); }
  .sh-reader__page { border-radius: 0; }
  .sh-reader__end { margin: var(--sh-space-8) var(--sh-space-4) 0; }
}