/* FlipBook — "Look inside" preview. Everything is scoped under .flipbook.
   Colours follow the site tokens when present (--ink, --red, ...), with fallbacks. */

[data-flipbook]:not(.flipbook) { min-height: 520px; }

.flipbook {
  --fb-ink: var(--ink, #17283c);
  --fb-red: var(--red, #811c2d);
  --fb-gold: var(--gold, #e7b853);
  --fb-paper: var(--paper, #fff9ed);
  --fb-cream: var(--cream, #f7edda);
  --fb-white: var(--white, #fffdf8);
  --fb-muted: var(--muted, #4c5864);
  --fb-rule: var(--line, #cdbda0);
  --fb-surface: var(--fb-cream);
  position: relative;
  box-sizing: border-box;
  display: block;
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(14px, 2.4vw, 28px);
  border-radius: 20px;
  background:
    radial-gradient(ellipse 70% 60% at 50% 52%, rgba(255, 253, 248, .75) 0%, rgba(255, 253, 248, 0) 70%),
    var(--fb-surface);
  color: var(--fb-ink);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 19px;
  line-height: 1.5;
  overflow-x: clip;               /* a turning page can never cause sideways scrolling */
  -webkit-tap-highlight-color: transparent;
}
.flipbook *, .flipbook *::before, .flipbook *::after { box-sizing: border-box; }
.flipbook [hidden] { display: none !important; }

/* ---------- caption above the book: a navy banner with white text (OD-786) ----------
   The script reserves the tallest caption's height; the text sits centred in it, so no gap opens above. */
.flipbook .fb-caption {
  display: flex; flex-direction: column; justify-content: center;
  max-width: 58rem;
  margin: 0 auto clamp(12px, 1.8vw, 18px);
  padding: clamp(12px, 1.6vw, 18px) clamp(16px, 2.6vw, 32px);
  border-radius: 12px;
  border-bottom: 4px solid var(--fb-gold);
  background: var(--fb-ink);
  box-shadow: 0 10px 24px rgba(23, 40, 60, .2);
  text-align: center;
}
.flipbook .fb-count {
  margin: 0 0 4px;
  font-size: 16px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--fb-gold);
}
.flipbook .fb-headline {
  margin: 0 0 6px;
  font-family: "Zilla", "Zilla Slab", Georgia, serif;
  font-weight: 700;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.12;
  color: #fffdf8;
  text-wrap: balance;
}
.flipbook .fb-line {
  margin: 0;
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.5;
  color: #f1e3c6;
  text-wrap: pretty;
}

/* ---------- stage: [Previous] [book] [Next] ---------- */
.flipbook .fb-stage {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas: "prev book next";
  align-items: center;
  gap: clamp(10px, 2vw, 28px);
}
.flipbook .fb-prev { grid-area: prev; }
.flipbook .fb-next { grid-area: next; }
.flipbook .fb-book-wrap {
  grid-area: book;
  display: flex; justify-content: center;
  padding: 12px 6px 26px;
  min-width: 0;
}

.flipbook .fb-book {
  position: relative;
  width: min(100%, max(520px, min(1040px, calc((100vh - 290px) * 4 / 3))));
  aspect-ratio: 4 / 3;
  perspective: 4200px;
  background: #fff;
  border-radius: 3px;
  box-shadow:
    0 30px 40px -22px rgba(23, 40, 60, .6),
    0 10px 24px -8px rgba(23, 40, 60, .22);
  cursor: pointer;
  user-select: none; -webkit-user-select: none;
  touch-action: pan-y;
  outline: none;
}

.flipbook .fb-page {
  position: absolute; top: 0; bottom: 0; width: 50%;
  background: #fff;
  overflow: hidden;
}
.flipbook .fb-page-left {
  left: 0; border-radius: 3px 0 0 3px;
  /* stacked page edges, bottom-left */
  box-shadow: -1px 1px 0 #e4d9c3, -2px 2px 0 #fbf7ee, -3px 3px 0 #e1d5bd, -4px 4px 0 #fbf7ee, -5px 5px 0 #d9ccb1;
}
.flipbook .fb-page-right {
  left: 50%; border-radius: 0 3px 3px 0;
  box-shadow: 1px 1px 0 #e4d9c3, 2px 2px 0 #fbf7ee, 3px 3px 0 #e1d5bd, 4px 4px 0 #fbf7ee, 5px 5px 0 #d9ccb1;
}
.flipbook .fb-page img,
.flipbook .fb-face img {
  display: block; width: 100%; height: 100%;
  object-fit: cover;
  pointer-events: none;
  -webkit-user-drag: none;
}
/* paper curvature + shadow into the spine */
.flipbook .fb-page::after,
.flipbook .fb-face::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
}
.flipbook .fb-page-left::after,
.flipbook .fb-face.is-left::after {
  background: linear-gradient(to left,
    rgba(23, 40, 60, .26) 0%, rgba(23, 40, 60, .10) 3%, rgba(23, 40, 60, .03) 8%, rgba(23, 40, 60, 0) 14%,
    rgba(255, 255, 255, 0) 90%, rgba(23, 40, 60, .05) 100%);
}
.flipbook .fb-page-right::after,
.flipbook .fb-face.is-right::after {
  background: linear-gradient(to right,
    rgba(23, 40, 60, .28) 0%, rgba(23, 40, 60, .11) 3%, rgba(23, 40, 60, .03) 8%, rgba(23, 40, 60, 0) 14%,
    rgba(255, 255, 255, 0) 90%, rgba(23, 40, 60, .05) 100%);
}
.flipbook .fb-spine {
  position: absolute; top: 0; bottom: 0; left: 50%;
  width: 2px; margin-left: -1px;
  background: linear-gradient(to bottom, rgba(23, 40, 60, .18), rgba(23, 40, 60, .32) 50%, rgba(23, 40, 60, .18));
  z-index: 3; pointer-events: none;
}
/* hover hint: the page you can turn lifts a little */
.flipbook.is-spread .fb-book:not(.is-turning):not(.at-end) .fb-page-right:hover,
.flipbook.is-spread .fb-book:not(.is-turning):not(.at-start) .fb-page-left:hover { filter: brightness(1.025); }
.flipbook .fb-book.at-end .fb-page-right,
.flipbook .fb-book.at-start .fb-page-left { cursor: default; }

/* ---------- the turning leaf ---------- */
.flipbook .fb-leaf {
  position: absolute; top: 0; bottom: 0; width: 50%;
  z-index: 5;
  transform-style: preserve-3d;
  pointer-events: none;
  will-change: transform;
}
.flipbook .fb-leaf-fwd { left: 50%; transform-origin: 0% 50%; }
.flipbook .fb-leaf-back { left: 0; transform-origin: 100% 50%; }
.flipbook .fb-leaf-single-fwd,
.flipbook .fb-leaf-single-back { left: 0; width: 100%; transform-origin: 0% 50%; }
.flipbook .fb-face {
  position: absolute; inset: 0;
  overflow: hidden;
  background: #fff;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.flipbook .fb-face-back { transform: rotateY(180deg); }
.flipbook .fb-shade {
  position: absolute; inset: 0; z-index: 1;
  opacity: 0; pointer-events: none;
}
.flipbook .fb-face.is-right .fb-shade { background: linear-gradient(to right, rgba(23, 40, 60, .75), rgba(23, 40, 60, .35)); }
.flipbook .fb-face.is-left .fb-shade { background: linear-gradient(to left, rgba(23, 40, 60, .75), rgba(23, 40, 60, .35)); }

/* ---------- buttons ---------- */
.flipbook button { font-family: inherit; }
.flipbook .fb-nav {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  min-width: 92px; padding: 10px 6px;
  border: 0; border-radius: 16px;
  background: none;
  color: var(--fb-ink);
  font-size: 18px; font-weight: 700; line-height: 1.2;
  cursor: pointer;
}
.flipbook .fb-nav-icon {
  display: grid; place-items: center;
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--fb-ink); color: var(--fb-white);
  box-shadow: 0 8px 16px -8px rgba(23, 40, 60, .7);
  transition: background-color .15s ease, transform .15s ease;
}
.flipbook .fb-nav svg { width: 30px; height: 30px; display: block; }
.flipbook .fb-nav:hover .fb-nav-icon { background: var(--fb-red); transform: scale(1.05); }
.flipbook .fb-nav[aria-disabled="true"] { opacity: .38; cursor: default; }
.flipbook .fb-nav[aria-disabled="true"]:hover .fb-nav-icon { background: var(--fb-ink); transform: none; }

.flipbook button:focus-visible,
.flipbook .fb-book:focus-visible {
  outline: 3px solid var(--fb-red);
  outline-offset: 4px;
}

/* ---------- bar under the book ---------- */
.flipbook .fb-bar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 10px 14px;
  margin: 2px 0 12px;
}
.flipbook .fb-pos {
  margin: 0 6px 0 0;
  font-size: 18px; font-weight: 600;
  color: var(--fb-muted);
}
.flipbook .fb-tool {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 48px; padding: 10px 18px;
  border: 2px solid var(--fb-ink); border-radius: 999px;
  background: var(--fb-white); color: var(--fb-ink);
  font-size: 18px; font-weight: 700; line-height: 1;
  cursor: pointer;
  transition: background-color .15s ease, color .15s ease;
}
.flipbook .fb-tool svg { width: 22px; height: 22px; flex: none; }
.flipbook .fb-tool:hover { background: var(--fb-ink); color: var(--fb-white); }

/* ---------- thumbnails ---------- */
.flipbook .fb-thumbs {
  display: flex; gap: 8px;
  overflow-x: auto; overscroll-behavior-x: contain;
  padding: 6px 4px 10px;
  scrollbar-width: thin;
}
.flipbook .fb-thumb {
  flex: 0 0 auto;
  display: flex; gap: 1px;
  padding: 5px;
  border: 2px solid transparent; border-radius: 8px;
  background: rgba(255, 253, 248, .6);
  cursor: pointer;
}
.flipbook .fb-thumb:first-child { margin-left: auto; }
.flipbook .fb-thumb:last-child { margin-right: auto; }
.flipbook .fb-thumb img {
  display: block; width: 30px; height: 45px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(23, 40, 60, .35);
}
.flipbook .fb-thumb:hover { border-color: var(--fb-rule); }
.flipbook .fb-thumb[aria-current="true"] { border-color: var(--fb-red); background: var(--fb-white); }

.flipbook .flipbook-signup-slot { margin-top: 18px; }
.flipbook .flipbook-signup-slot:empty { display: none; }

.flipbook .fb-sr {
  position: absolute !important;
  width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
.flipbook .fb-error { margin: 0; padding: 24px; font-size: 19px; text-align: center; color: var(--fb-ink); }

/* ---------- narrower screens: buttons move under the book ---------- */
.flipbook.is-narrow .fb-stage,
.flipbook.is-single .fb-stage {
  grid-template-columns: 1fr 1fr;
  grid-template-areas: "book book" "prev next";
  gap: 4px 12px;
}
.flipbook.is-narrow .fb-nav,
.flipbook.is-single .fb-nav {
  flex-direction: row; justify-content: center; gap: 6px;
  min-height: 56px; padding: 8px 14px;
  border: 2px solid var(--fb-ink); border-radius: 999px;
  background: var(--fb-white);
}
.flipbook.is-narrow .fb-next,
.flipbook.is-single .fb-next { flex-direction: row-reverse; }
.flipbook.is-narrow .fb-prev { justify-self: end; width: min(100%, 300px); }
.flipbook.is-narrow .fb-next { justify-self: start; width: min(100%, 300px); }
.flipbook.is-narrow .fb-nav-icon,
.flipbook.is-single .fb-nav-icon { width: auto; height: auto; background: none; color: inherit; box-shadow: none; }
.flipbook.is-narrow .fb-nav svg,
.flipbook.is-single .fb-nav svg { width: 24px; height: 24px; }
.flipbook.is-narrow .fb-nav:hover,
.flipbook.is-single .fb-nav:hover { background: var(--fb-ink); color: var(--fb-white); }
.flipbook.is-narrow .fb-nav:hover .fb-nav-icon,
.flipbook.is-single .fb-nav:hover .fb-nav-icon { background: none; transform: none; }
.flipbook.is-narrow .fb-nav[aria-disabled="true"]:hover,
.flipbook.is-single .fb-nav[aria-disabled="true"]:hover { background: var(--fb-white); color: var(--fb-ink); }

/* ---------- phone: one page at a time ---------- */
.flipbook.is-single .fb-caption { min-height: 0; }
.flipbook.is-single .fb-book-wrap { padding: 10px 6px 20px 0; }
.flipbook.is-single .fb-book { width: min(100%, 440px); aspect-ratio: 2 / 3; perspective: 3400px; }
.flipbook.is-single .fb-page-left,
.flipbook.is-single .fb-spine { display: none; }
.flipbook.is-single .fb-page-right { left: 0; width: 100%; border-radius: 0 4px 4px 0; }
.flipbook.is-single .fb-pos { flex-basis: 100%; text-align: center; margin: 0; }

/* ---------- enlarge dialog (full screen) ---------- */
.flipbook .fb-dialog {
  position: fixed; inset: 0;
  width: 100vw; height: 100vh; height: 100dvh;
  max-width: 100vw; max-height: 100vh; max-height: 100dvh;
  margin: 0; padding: 0; border: 0;
  background: var(--fb-paper); color: var(--fb-ink);
  font-size: 19px;
  flex-direction: column;
}
.flipbook .fb-dialog[open] { display: flex; }
.flipbook .fb-dialog::backdrop { background: rgba(23, 40, 60, .85); }
.flipbook .fb-dlg-bar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 8px 10px;
  padding: 10px 12px;
  background: var(--fb-ink); color: var(--fb-white);
}
.flipbook .fb-dlg-pos { margin: 0 8px; font-size: 18px; font-weight: 700; text-align: center; }
.flipbook .fb-dlg-btn {
  display: inline-flex; align-items: center; gap: 6px;
  min-height: 48px; min-width: 48px; padding: 8px 14px;
  border: 2px solid rgba(255, 253, 248, .75); border-radius: 999px;
  background: transparent; color: var(--fb-white);
  font-size: 18px; font-weight: 700; line-height: 1;
  cursor: pointer;
}
.flipbook .fb-dlg-btn svg { width: 22px; height: 22px; flex: none; }
.flipbook .fb-dlg-btn:hover { background: rgba(255, 253, 248, .14); }
.flipbook .fb-dlg-btn[aria-disabled="true"] { opacity: .4; cursor: default; }
.flipbook .fb-dlg-close { background: var(--fb-gold); border-color: var(--fb-gold); color: var(--fb-ink); }
.flipbook .fb-dlg-close:hover { background: #f1cd78; }
.flipbook .fb-dialog button:focus-visible { outline: 3px solid var(--fb-gold); outline-offset: 2px; }
.flipbook .fb-dlg-body {
  flex: 1 1 auto; min-height: 0;
  overflow: auto;
  padding: 16px;
  text-align: center;
}
.flipbook .fb-dlg-img {
  display: block; margin: 0 auto;
  max-width: 100%; max-height: calc(100vh - 120px); max-height: calc(100dvh - 120px);
  width: auto; height: auto;
  background: #fff;
  box-shadow: 0 12px 34px rgba(23, 40, 60, .3);
  cursor: zoom-in;
}
.flipbook .fb-dlg-body.is-zoomed .fb-dlg-img { max-height: none; max-width: none; width: min(1350px, 200%); cursor: zoom-out; }
.flipbook .fb-dlg-text {
  max-width: 40rem; margin: 0 auto;
  padding: 24px 26px;
  border-radius: 10px;
  background: var(--fb-white);
  box-shadow: 0 2px 10px rgba(23, 40, 60, .12);
  white-space: pre-wrap; text-align: left;
  font-size: 20px; line-height: 1.6;
}
@media (max-width: 560px) {
  .flipbook .fb-caption { padding: 10px 14px; border-radius: 10px; }
  .flipbook .fb-count { font-size: 14px; }
  .flipbook .fb-headline { font-size: 23px; margin-bottom: 4px; }
  .flipbook .fb-line { font-size: 17px; line-height: 1.42; }
  .flipbook .fb-dlg-prev span, .flipbook .fb-dlg-next span { display: none; }
  .flipbook .fb-dlg-pos { order: -1; flex-basis: 100%; }
  .flipbook .fb-dlg-text { padding: 18px; font-size: 19px; }
}

@media (prefers-reduced-motion: reduce) {
  .flipbook *, .flipbook *::before, .flipbook *::after {
    transition: none !important; animation: none !important; scroll-behavior: auto !important;
  }
}