/* ============================================
   R-SECURE Brochure viewer — modal shell + simple image pager.
   Flip engine (StPageFlip) removed 2026-06-12 at client request:
   plain Prev/Next over fit-to-viewport page images, no stretch.
   Modal chrome (header, toolbar, buttons) kept from the approved design.
   ============================================ */

.rs-flipbook {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: none;
  align-items: center;
  justify-content: center;
  background: #0a0a0a;
  opacity: 0;
  transition: opacity 0.25s ease;
  padding: 24px;
  overflow: hidden;
  font-family: var(--body, 'Inter', sans-serif);
  color: var(--fg, #f5f5f7);
}
.rs-flipbook.open { display: flex; opacity: 1; }
body.rs-flipbook-open { overflow: hidden; }

.rs-flipbook__stage {
  position: relative;
  width: 100%;
  max-width: 1440px;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* --- Header --- */
.rs-flipbook__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-shrink: 0;
  position: relative;
  z-index: 20;
}
.rs-flipbook__title {
  font-family: var(--display, 'Playfair Display', serif);
  font-size: 18px;
  color: var(--fg, #f5f5f7);
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.rs-flipbook__title span {
  color: var(--gold, #c8a45d);
  font-style: italic;
}
.rs-flipbook__close {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--fg, #f5f5f7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
  flex-shrink: 0;
}
.rs-flipbook__close:hover {
  background: var(--gold, #c8a45d);
  color: #0a0a0a;
  border-color: var(--gold, #c8a45d);
  transform: rotate(90deg);
}
.rs-flipbook__close:focus-visible {
  outline: 2px solid var(--gold, #c8a45d);
  outline-offset: 2px;
}
.rs-flipbook__close svg { width: 16px; height: 16px; }

/* --- Page stage --- */
.rs-flipbook__bookwrap {
  flex: 1;
  position: relative;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rs-flipbook__viewport {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  cursor: zoom-in;
}

.rs-flipbook__page-img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  border-radius: 2px;
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.55),
    0 8px 20px rgba(0, 0, 0, 0.4);
  /* fade/lift the new page in — transform + opacity only, never layout props */
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.34s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.34s cubic-bezier(0.22, 1, 0.36, 1);
}
.rs-flipbook__page-img.is-in { opacity: 1; transform: none; }

/* --- Zoom mode: viewport scrolls, image grows past the frame --- */
.rs-flipbook--zoomed .rs-flipbook__viewport {
  display: block;
  overflow: auto;
  text-align: center;
  cursor: zoom-out;
  -webkit-overflow-scrolling: touch;
}
.rs-flipbook--zoomed .rs-flipbook__page-img {
  max-width: none;
  max-height: none;
  height: 150vh;
  width: auto;
  display: inline-block;
  cursor: zoom-out;
  box-shadow: none;
  border-radius: 0;
}

/* --- Edge click zones (desktop affordance; hidden on touch + when zoomed) --- */
.rs-flipbook__edge {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 22%;
  max-width: 220px;
  border: 0;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 0 18px;
  z-index: 6;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.rs-flipbook__edge--prev { left: 0; justify-content: flex-start; }
.rs-flipbook__edge--next { right: 0; justify-content: flex-end; }
.rs-flipbook__bookwrap:hover .rs-flipbook__edge { opacity: 1; }
.rs-flipbook__edge[disabled] { opacity: 0; pointer-events: none; }
.rs-flipbook--zoomed .rs-flipbook__edge { display: none; }
.rs-flipbook__edge-chev {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(15, 15, 15, 0.72);
  border: 1px solid rgba(200, 164, 93, 0.3);
  color: var(--gold, #c8a45d);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s ease, transform 0.18s ease;
}
.rs-flipbook__edge:hover .rs-flipbook__edge-chev { background: rgba(200, 164, 93, 0.16); transform: scale(1.06); }
.rs-flipbook__edge-chev svg { width: 22px; height: 22px; }
/* No hover affordance on touch devices */
@media (hover: none) {
  .rs-flipbook__edge { display: none; }
  .rs-flipbook__viewport { cursor: default; }
}

/* --- Loader (per-image) --- */
.rs-flipbook__bookloader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
  pointer-events: none;
  z-index: 8;
}
.rs-flipbook__bookloader.visible { opacity: 1; visibility: visible; }
.rs-flipbook__bookloader__spinner {
  width: 42px;
  height: 42px;
  border: 2px solid rgba(200, 164, 93, 0.18);
  border-top-color: var(--gold, #c8a45d);
  border-radius: 50%;
  animation: rs-fb-spin 0.8s linear infinite;
}
@keyframes rs-fb-spin { to { transform: rotate(360deg); } }

/* --- Toolbar --- */
.rs-flipbook__toolbar {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 8px 12px;
  background: #0f0f0f;
  border: 1px solid rgba(200, 164, 93, 0.18);
  border-radius: 4px;
  font-size: 13px;
  color: var(--fg-muted, rgba(245,245,247,0.6));
  flex-wrap: wrap;
}
.rs-flipbook__tb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg, #f5f5f7);
  cursor: pointer;
  border-radius: 3px;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  text-decoration: none;
}
.rs-flipbook__tb-btn svg { width: 16px; height: 16px; }
.rs-flipbook__tb-btn:hover {
  background: rgba(200, 164, 93, 0.12);
  border-color: rgba(200, 164, 93, 0.32);
  color: var(--gold, #c8a45d);
}
.rs-flipbook__tb-btn:focus-visible {
  outline: 2px solid var(--gold, #c8a45d);
  outline-offset: 1px;
}
.rs-flipbook__tb-btn[disabled] { opacity: 0.28; cursor: not-allowed; pointer-events: none; }
.rs-flipbook__tb-btn[aria-pressed="true"] {
  background: rgba(200, 164, 93, 0.16);
  border-color: rgba(200, 164, 93, 0.4);
  color: var(--gold, #c8a45d);
}
.rs-flipbook__tb-divider {
  width: 1px;
  align-self: stretch;
  background: rgba(255,255,255,0.1);
  margin: 4px;
}
.rs-flipbook__toolbar__page {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 8px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.05em;
  font-size: 12px;
  color: var(--fg-muted, rgba(245,245,247,0.6));
}
.rs-flipbook__tb-page {
  width: 48px;
  height: 28px;
  text-align: center;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  background: #1a1a1a;
  color: var(--fg, #f5f5f7);
  border: 1px solid rgba(200,164,93,0.2);
  border-radius: 3px;
  padding: 0 4px;
  -moz-appearance: textfield;
  appearance: textfield;
}
.rs-flipbook__tb-page::-webkit-outer-spin-button,
.rs-flipbook__tb-page::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.rs-flipbook__tb-page:focus { outline: 1px solid var(--gold, #c8a45d); outline-offset: 1px; }
.rs-flipbook__tb-sep { color: rgba(255,255,255,0.3); }

/* --- Screen reader only --- */
.rs-flipbook__sr {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  border: 0;
}

/* --- Mobile --- */
@media (max-width: 767px) {
  .rs-flipbook { padding: 12px; }
  .rs-flipbook__title { font-size: 15px; }
  .rs-flipbook__toolbar { padding: 6px 8px; gap: 4px; }
  .rs-flipbook__tb-btn { width: 34px; height: 34px; }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  .rs-flipbook,
  .rs-flipbook__page-img,
  .rs-flipbook__close,
  .rs-flipbook__edge,
  .rs-flipbook__edge-chev { transition: none; }
  .rs-flipbook__page-img { transform: none; }
  .rs-flipbook__bookloader__spinner { animation-duration: 1.6s; }
}