/* Baithak photobook — the album flip-book overlay.
   Ported verbatim from the owner-approved mock (scratchpad/album-flip2.html,
   approved 2026-09-16). Two rules make this safe to drop into the live app:
   (1) EVERY selector is scoped under #pbookOv, and (2) every structural class is
   pb- prefixed, because .page/.photo/.art/.scene/.slot/.paper/.ground/.corner/
   .meta/.end/.nav/.hint all already exist in the app's global CSS and would
   otherwise collide. Custom props live on #pbookOv, not :root, for the same
   reason — the app already owns --maroon/--gold in aangan-tokens.css. */
#pbookOv{
  --pb-maroon:#8f1d15; --pb-oxblood:#5a0f0a; --pb-mari:#e8912a; --pb-gold:#f4b73e; --pb-gold-lt:#fbe6a8;
  --pb-cream:#f4e7c8; --pb-ink:#241206; --pb-tan:#c98b4a; --pb-grn:#2f6b3f;
  --pb-disp:"Fraunces",Georgia,serif; --pb-hand:"Gloria Hallelujah",cursive;
  --pb-guj:"Baloo Bhaijaan 2","Baloo 2",cursive; --pb-say:"Baloo 2",system-ui,sans-serif;
  position:fixed; inset:0; z-index:1200; display:none; align-items:center; justify-content:center;
  background:radial-gradient(130% 90% at 50% 0%,#2a1608,#120a04 75%);
  font-family:var(--pb-disp); -webkit-font-smoothing:antialiased; -webkit-tap-highlight-color:transparent;
}
#pbookOv.show{display:flex}
#pbookOv *{box-sizing:border-box;margin:0}

#pbookOv .pb-stage{width:min(92vw,430px);height:min(93vh,880px);position:relative;perspective:2200px}
#pbookOv .pb-book{position:absolute;inset:0;transform-style:preserve-3d}
#pbookOv .pb-page{position:absolute;inset:0;transform-origin:left center;transition:transform .84s cubic-bezier(.5,.08,.5,.92);backface-visibility:hidden;border-radius:5px 12px 12px 5px;overflow:hidden;box-shadow:0 26px 60px rgba(0,0,0,.62), inset 0 0 0 1px rgba(0,0,0,.25);cursor:pointer;will-change:transform}
#pbookOv .pb-page.flipped{transform:rotateY(-179deg)}
#pbookOv .pb-ground{position:absolute;inset:0;width:100%;height:100%}
#pbookOv .pb-page::before{content:"";position:absolute;left:0;top:0;bottom:0;width:26px;z-index:8;pointer-events:none;background:linear-gradient(90deg,rgba(0,0,0,.42),rgba(0,0,0,.05) 60%,transparent)}
#pbookOv .pb-page::after{content:"";position:absolute;right:0;top:0;bottom:0;width:30px;z-index:8;pointer-events:none;background:linear-gradient(270deg,rgba(255,255,255,.13),transparent)}

/* COVER */
#pbookOv .pb-cover .pb-ground{background:radial-gradient(120% 80% at 50% -10%, #7a160f, var(--pb-oxblood) 70%, #3d0906)}
#pbookOv .pb-coverwrap{position:absolute;inset:16px;border-radius:4px 10px 10px 4px;z-index:3;box-shadow:inset 0 0 0 2px rgba(244,183,62,.45), inset 0 0 0 7px rgba(90,15,10,.6), inset 0 0 0 8px rgba(244,183,62,.9);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:34px 26px}
#pbookOv .pb-corner{position:absolute;width:56px;height:56px;z-index:4}
#pbookOv .pb-corner svg{width:100%;height:100%;filter:drop-shadow(0 1px 1px rgba(0,0,0,.5))}
#pbookOv .pb-corner.tl{top:22px;left:22px}
#pbookOv .pb-corner.tr{top:22px;right:22px;transform:scaleX(-1)}
#pbookOv .pb-corner.bl{bottom:22px;left:22px;transform:scaleY(-1)}
#pbookOv .pb-corner.br{bottom:22px;right:22px;transform:scale(-1,-1)}
#pbookOv .pb-ttl-guj{font-family:var(--pb-guj);font-weight:800;font-size:40px;line-height:1.06;color:var(--pb-gold-lt);text-shadow:0 2px 0 #6b1109, 0 3px 8px rgba(0,0,0,.5)}
#pbookOv .pb-ttl-sub{font-family:var(--pb-hand);font-size:15px;color:#f0cf96;margin-top:12px}
#pbookOv .pb-plaque{position:relative;padding:34px 30px 26px;border-radius:9px;background:radial-gradient(120% 130% at 50% 26%, rgba(78,16,10,.68), rgba(32,7,4,.5));box-shadow:inset 0 0 0 2px rgba(244,183,62,.92), inset 0 0 0 5px rgba(90,15,10,.5), inset 0 0 0 6px rgba(244,183,62,.5), 0 8px 22px rgba(0,0,0,.42)}
#pbookOv .pb-cdiv{width:66px;height:2px;margin:15px auto 12px;background:linear-gradient(90deg,transparent,var(--pb-gold),transparent);border-radius:2px}
#pbookOv .pb-meta{font-family:var(--pb-disp);font-weight:600;font-size:12px;letter-spacing:.26em;text-transform:uppercase;color:#efc888}
#pbookOv .pb-clasp{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);z-index:5;width:64px;height:20px;border-radius:4px;background:linear-gradient(180deg,var(--pb-gold-lt),var(--pb-gold) 45%,#9a6a16);box-shadow:0 2px 4px rgba(0,0,0,.5), inset 0 1px 1px rgba(255,255,255,.6);display:flex;align-items:center;justify-content:center}
#pbookOv .pb-clasp b{width:10px;height:10px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#fff,#c8321f);box-shadow:inset 0 0 2px rgba(0,0,0,.5)}
/* a slow gold-foil sheen sweeps the title once the cover settles — the premium
   "this is special" cue. Clipped to the plaque; cover only; re-fires on return. */
#pbookOv .pb-cover .pb-plaque{overflow:hidden}
#pbookOv .pb-cover .pb-plaque::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(104deg,transparent 36%,rgba(255,243,206,.32) 50%,transparent 64%);transform:translateX(-130%)}
#pbookOv .pb-cover.active .pb-plaque::after{animation:pbSheen 2.6s 1.1s ease-in-out}
@keyframes pbSheen{0%{transform:translateX(-130%)}100%{transform:translateX(130%)}}
@media (prefers-reduced-motion:reduce){ #pbookOv .pb-cover.active .pb-plaque::after{animation:none} }

/* INTERIOR — 2 photos per page */
#pbookOv .pb-leaf .pb-ground{background:linear-gradient(180deg,#f7edd2,#ecd9ac)}
#pbookOv .pb-paper{position:absolute;inset:0;z-index:2;background:radial-gradient(120% 60% at 50% 0%, rgba(255,250,235,.55), transparent 60%),repeating-linear-gradient(96deg, rgba(150,110,50,.05) 0 2px, transparent 2px 5px);mix-blend-mode:multiply;opacity:.7}
#pbookOv .pb-leafborder{position:absolute;inset:11px;z-index:3;border-radius:4px;pointer-events:none;box-shadow:inset 0 0 0 2px rgba(143,29,21,.5), inset 0 0 0 5px rgba(244,183,62,.5), inset 0 0 0 6px rgba(143,29,21,.5)}
#pbookOv .pb-stack{position:absolute;inset:22px 24px 46px;z-index:4;display:flex;flex-direction:column;justify-content:space-between}
#pbookOv .pb-slot{height:47%;display:flex;flex-direction:column}
#pbookOv .pb-photo{position:relative;flex:1;border-radius:5px;overflow:hidden;box-shadow:0 6px 14px rgba(60,25,0,.34), inset 0 0 0 3px #fdfaf2, inset 0 0 0 4px rgba(120,95,55,.30)}
#pbookOv .pb-scene{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
#pbookOv .pb-scene .pb-bg{position:absolute;inset:0}
#pbookOv .pb-art{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
#pbookOv .pb-scrim{position:absolute;left:0;right:0;top:0;height:44%;z-index:2;pointer-events:none;background:linear-gradient(180deg,rgba(247,237,210,.92),rgba(247,237,210,.55) 45%,transparent)}
#pbookOv .pb-saying{position:absolute;left:10px;right:10px;top:9px;z-index:3;text-align:center;font-family:var(--pb-say);font-weight:600;font-size:14px;line-height:1.14;color:#2a1608;text-shadow:0 1px 0 rgba(255,255,255,.55)}
#pbookOv .pb-saying b{color:var(--pb-maroon);font-weight:800}
#pbookOv .pb-illtag{position:absolute;right:8px;bottom:6px;z-index:3;font-family:var(--pb-disp);font-style:italic;font-size:9.5px;letter-spacing:.02em;color:rgba(40,20,5,.5);background:rgba(255,248,230,.5);padding:1px 6px;border-radius:8px}
/* clear plastic sleeve over the photo — soft diagonal film reflection + a pocket-opening lip */
#pbookOv .pb-sleeve{position:absolute;inset:0;z-index:6;pointer-events:none;border-radius:5px;
  background:linear-gradient(116deg, rgba(255,255,255,.30) 0%, rgba(255,255,255,.08) 14%, transparent 32%, transparent 60%, rgba(255,255,255,.18) 80%, rgba(255,255,255,.04) 100%);
  box-shadow:inset 0 1px 3px rgba(255,255,255,.45), inset 0 0 0 1.5px rgba(200,214,232,.34), inset 0 -12px 18px rgba(0,0,0,.06)}
#pbookOv .pb-sleeve::before{content:"";position:absolute;left:6%;right:6%;top:5px;height:5px;border-radius:3px;background:linear-gradient(180deg,rgba(255,255,255,.62),transparent);opacity:.6}
#pbookOv .pb-sleeve::after{content:"";position:absolute;left:0;right:0;bottom:0;height:16px;border-radius:0 0 5px 5px;background:linear-gradient(0deg,rgba(255,255,255,.14),transparent)}
#pbookOv .pb-factline{margin-top:8px;text-align:center;font-family:var(--pb-hand);font-size:15px;color:var(--pb-maroon);line-height:1}
#pbookOv .pb-factline .pb-who{color:var(--pb-ink)}
#pbookOv .pb-factline .pb-grn{color:var(--pb-grn)}
#pbookOv .pb-pgno{position:absolute;bottom:15px;left:50%;transform:translateX(-50%);z-index:5;font-family:var(--pb-disp);font-weight:600;font-size:11px;color:#8a5f28;letter-spacing:.28em}
#pbookOv .pb-newstamp{position:absolute;right:9px;bottom:9px;z-index:7;transform:rotate(-8deg);font-family:var(--pb-disp);font-weight:800;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:#a3231a;border:2.5px solid #a3231a;border-radius:6px;padding:2px 7px;background:rgba(247,237,210,.74);box-shadow:0 1px 2px rgba(0,0,0,.22)}

/* Motion — every image "arrives" when its page turns to the front (owner
   2026-09-16, "ultra good" pass 2026-09-16). Choreography per landed page:
   the slot rises+fades, the PHOTO develops in like an instant print (dim/flat
   -> full), and any "New ✦" stamp thumps down a beat later. Re-runs each turn
   because render() toggles .active off the old leaf and onto the new one. */
@keyframes pbReveal{0%{opacity:0;transform:translateY(20px) scale(.955)}60%{opacity:1}100%{opacity:1;transform:none}}
@keyframes pbDevelop{from{filter:brightness(.8) saturate(.82) contrast(.96)}to{filter:none}}
@keyframes pbStamp{0%{opacity:0;transform:rotate(-8deg) scale(1.55)}62%{opacity:1;transform:rotate(-8deg) scale(.9)}100%{opacity:1;transform:rotate(-8deg) scale(1)}}
#pbookOv .pb-page.active .pb-slot{animation:pbReveal .62s cubic-bezier(.2,.7,.28,1) both}
#pbookOv .pb-page.active .pb-stack .pb-slot:nth-child(2){animation-delay:.15s}
#pbookOv .pb-page.active .pb-art{animation:pbDevelop .82s cubic-bezier(.2,.7,.28,1) both}
#pbookOv .pb-page.active .pb-stack .pb-slot:nth-child(2) .pb-art{animation-delay:.15s}
#pbookOv .pb-page.active .pb-newstamp{animation:pbStamp .5s .4s cubic-bezier(.2,.8,.3,1.25) both}
@media (prefers-reduced-motion:reduce){
  #pbookOv .pb-page.active .pb-slot,#pbookOv .pb-page.active .pb-art,#pbookOv .pb-page.active .pb-newstamp{animation:none}
}

/* BACK */
#pbookOv .pb-back .pb-ground{background:radial-gradient(120% 80% at 50% 110%, #7a160f, var(--pb-oxblood) 70%, #3d0906)}
#pbookOv .pb-back .pb-end{font-family:var(--pb-hand);font-size:23px;color:var(--pb-gold-lt);text-shadow:0 2px 6px rgba(0,0,0,.5)}
#pbookOv .pb-back .pb-endsub{font-family:var(--pb-disp);font-weight:600;font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:#e7b871;margin-top:14px}

/* chrome — nav arrows, close, hint (fixed within the overlay) */
#pbookOv .pb-hint{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);z-index:50;font-family:var(--pb-disp);font-weight:600;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#caa26a;opacity:.85;pointer-events:none}
#pbookOv .pb-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:50;width:42px;height:42px;border-radius:50%;border:0;cursor:pointer;background:rgba(30,16,6,.55);color:var(--pb-gold);font-size:19px;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
#pbookOv .pb-nav:disabled{opacity:.25}
#pbookOv .pb-nav.prev{left:max(8px,calc(50vw - 250px))}
#pbookOv .pb-nav.next{right:max(8px,calc(50vw - 250px))}
#pbookOv .pb-close{position:absolute;top:calc(env(safe-area-inset-top,0px) + 12px);right:14px;z-index:60;width:38px;height:38px;border-radius:50%;border:0;cursor:pointer;background:rgba(30,16,6,.62);color:var(--pb-gold-lt);font-size:22px;line-height:1;display:flex;align-items:center;justify-content:center}